Chronique bibliographique

194

Annales de l'Association internationale pour le Calcul analog:que

N" 3 - - ]uillet 1964

CHRONIQUE BIBLIOGRAPHIQUE

N O T E DE L'EDITEUR Pour faciliter la consultation de la bibliographie, nous avons adopt~ un double classement ; d'abord un classement chronologique et ensuite, dans chacune des ann&s, un classement alphabdtique. Chaque /ols que la source de la bibliographie a gtd index&, l'index numdrique se trouve en t~te de la rdf~. fence. Les rgf&ences anowmes, telles que <> sont classdes en t$te de l'ann&. II n'a pas dtd tenu compte de particules dans les noms propres, ainsi d ' A T R I eft classg sous A T R I , yon H O E R N E R est class6 sous HOERNER. Q uand la rdf&ence comporte plusieurs noms d'auteurs, elle est class& sous le nora du premier auteur. Le Comitg de Rgdaclion a estimd devoir commenter certaines r~fdrences. Elles sont clarsdes dgalement suirant les mdicatiom qui prdc~dent. Certaines rgfgrences parues sans commentaire dam le prdsent [ascicule seronl comment&s dam les prochains numdros de la revue. Tir&-a-part : Ce~x de nos lecteurs qui seraient int6ress6s ~. recevoir des ~:ir6s&-part des pages bibliographiques de notre revue peuvent obtenir ceux-ci en en faisant la demande, ~. l'avance, adress6e ~. l'6diteur : Les Presses acad6miques europ6ennes, 98, chauss6e de Charleroi, Brttxelles 6 - - Belgique.

Reprints : Those, amongst our readers, w h o are interested in getting reprints of the bibliographical pages of our Revue, are requested to ask for them, beforehand, to the Editor : Presses acad6miques europ6ennes, 98, chauss6e de Charleroi, Bruxelles 6 - - Belgium. Sonderdrucke : Sonderdrucke der bibliographischen Seiten unserer Zeitschrift stehen Interessenten auf Verlangen zur Verfiigung. Bitte wenden Sie sich jeweils nor Erscheinen an den Verlag : Presses acad6miques europ6ennes, 98, chauss6e de Charleroi, Bruxelles 6, Belgien.

1958 FRY D.E. & WATTS M R.. The stabdity of an aircraft

under automatic throttle controle and the cross-coupling effects with elevator control, Aeronautical Research Council (Great Brit ), ARC-R &M-3314, N 63-15835, 1958, Octoher, 23 pages 5813 <{The stability of an alrcraft with automatic throttle and elevator controls has been investigated theoretically using an analog computer. Throttle application, proportional to change in airspeed, incidence, or rate of pitch, may provide damping of the long-pe, iod motion, but speed is shown to be the most suitable variable. The control of an aircraft having negative static margin is considered, and shown to lequire either the addition of an integral control on the throttle o: a combination of throttle and elevator controls. >> From NASA.Sci. Tech. Aero. Repts., July 8, 1963. 1959 BARRETT J.A : SM-2 transient voltage and frequency analysis by plant analog simulation Library of Congress (USA) PB 163185 (AD-228682), 16 November, 1959, 80 p. 5814 BROWN Dan: On the use of PCM to telemeter high frequency random data, Douglas Aircraft Company, Inc, Santa Monica, California, Report n° SM 56167, 1959, Octobet 14, 16 pages. 5815 {~The results of this study show that PCM/FM has substantially better perfmmance than a FM/FM System occupying the same RF bandwidth The floating point systern proposal could by assembled out of elements in current use. There are a number of manufacturers producing air.

borne analog to d,gita[ converters with the required bit rates, and the floating point logic are straight forwatd. Costing and sizing studies of these elements is not considered as a part of this study. Tile filtering requirements for the data, the PCM pulse train, and the FM video, are not severe by current standards PCM/PM and PCM/AM may offer still more improvement m performance. A study of these techniques and the possible utilization of higher frequency telemetry bands is in preparation. >> From DDCTechnical Abstract Bulletin, October 15, 1963. PEPINSKY Ray SCADAC : Single-crystal automatic duffrectometer and analogue computer for X-ray analyses, Abstract for International Crystallographic Convention, Leningrad, USSR, 1959, May 21-27, AD-419-151 5816 1960 HAUS F C, CZINEZENHEIM J. & MOULIN L. : The use of analogue computers in solving problems of flight mechanics, Advisory Group for Aeronautical Research and Development, Paris (France), AGARD AGARDograph 44, June 1960. 5817 <{The equations of morton are established for an aircraft wh,ch has a rigid structure, taking into account additional telationsh~ps introduced into the standard equations as a result of operatmnal conditions The bases for calculating the general equations of motion for an aircraft with a nonrig,d structure are discussed. The characteristics of the motion defined by these equations are easily studies by means of analog calculations The principles of analog calculation and the application of such calculations to the solution of certain problems relating to the mechanics of an aircraft are

Chrontque biblioglaphsque

195

presented. A number of questions concerned with the following are discussed m turn: the motion of aircraft with a non-rigid structure ; the response of aircraft htted with an automatic pilot ; the calculation of landing trajectories. The automattc holding of an approach trajectory is illustrated It is shown how analog calculations make st possible to study in detail the action of numerous parameters, and to choose, from among possible solutions, those which are worth adopting ~> From DDC-Technlcal Abst*act Bulletin October 1, 1963. HAUS F C & C Z I N C Z E N H E I M J. : The use of analogue computers m solving problems of flight mechanics, Advisory Group for Aeronautical Research and Development, Pads (France), N 63-17770, 1960, June, 564 pages 5818 ~ Part I of this AGARDograph estabhshes the equationsof-motion for an aircraft which has a rigid structure, taking into account ad&tional relatmnships introduced into the standard equatmns as a result of operational condmons. It also discusses tile bases for calculating the general equationsof-motion for an aircraft with a nonrigid structure. The

hmJnaly difficulties The reformation obtazned was *her, applied to develop improved programs for the more cornplex cases, unt~l the complete two-dimensional simulation of the ray path equatmns was accomplished. ~> From NASASet. Tech. Aero. Repts., September 8, 1965. BEADLE Ray & BASSON D - - Programming study for high frequency exosphenc ductmg, TechmcaI Report n o 1, N 6419517, 1962, November 2, 54 pages 5827 <(This report presents specific analog-computer programs effective in the solution of a two-dimensional simplified description of the ray paths of radm waves propagating into the earth's exosphere. >>From NASA-Scl Tech. Ae,'o. Repls., October 8, 1963. CALIGIURI G.P La simulation d'une machine synchrone au moyen d'une calculamce analoglque Ene~g/a Elelt. 1962. n" 6, pp. 496-500. 5828 FINDEISEN W., STEMPIEN A. : Automat,sation de processus

characte,,stics of the morton defined by these equations a*e easily studied by means of analog calculatmns. >> Frmn NASA-Sci. Tech. Aero. Repts., August 23, 1963.

GEL'FENBEYN S.P.' Study of automatic driving systems by simulation, Translation from Vesln. Sel'skokoz, Moscow,

1961

calculateur analogNue (allemand), ZeitsehH/t ]i;r Merren, Sleuern und Regeln, t 5, 1962, n ° 2, Juni, pp.

pat

M7419.

5829

1962, n ° 11, N64-10628, p. t05; 1963, February, 14 pa

HEAP J., BECK C . . Acceptance testing of Litton A / D Shaft Converter, Aeronautical Instruments Lab., Naval Air Development Center, Johnsvflle, Pa., Report n ° NADCAI-6104, 1961, January 31, 4 pages. 5819 ROY P K.S • A digital integrator and its use in a correlation computer, Journ. Technol. (India), gol 6, 1961, n ° 2, December, pp. 85-89. 5820

yes. 5830 <~A system of automatic d, iving of a crawler-mounted plowing unit was studied by means of an analog cornputm ~> From NASA-Sc/. Tech. Aero. Repta., January 8, 1964. GNAVI F. : Simulazmne analogica ed anahsi dell ecc*taxione aerodinamica e delle risposta d, une pale della ventola delia gaheria del vento del politecmco di Torino, l'Aerotecnica, 1962, Decembre, p. 257. 583L

SCHUSLER H W : Ober d,e Darstellung yon Obertragungsfunktionen und Netzwerken am Analogrechoer (Repr~sen tatlon des fonctions de transfer* et r~seau sur calculateur

HAMMANN J.W.. ANAlogog compute, for quadrupole magnet design, Report, TID-17429, 23 pages, 1963, September 5832

analogique), Westdeutscher Verlag Koln Deutschland, 1961, 105 p.

und

Opladen 5821

681 142 SEN J K

Trans,stors as square-mot funmon generator, ]om n. Technol. (India), Vol 6, 1961, n ° 2, December, pp. 71-78 5822

WINKLER

Helmut : Elektrische Analog,eanlagen, elektro-

nisches Rechnen und Regeln, Band 2, Akademie.Verlag, Berlin 1961, 242 S DM 29 5823 ANDERSON R.P., BRYANT L.T, CARTER J.P. & MARCHATERRE J.F.' Transient analys,s of two-phase natural circulation systems, AEC Report, ANL-6653, 1962, December. 5824 From Deutsche Forschungsgemeip¢schaft. Current Bibliography on Analog and Digital Computers and the*t Applications, n ° 61, 1963. 5825 1962

HOLLANDER G L

Compare*son des calculateurs num6riques

et mcr6ment,els dens Its commandes automatiques (allemend), Zettsch~lfl /ti~ Messen, Steueln und Regeln, t. 5, 1962, n ° 6, Juni, pp. 277-278 5833 JOHNSON R.F. <~A time-&vismn analogue mult,pher for correlation measurements and mixing at frequenc, es up to 100 kilocycles per second, National Physical Lab., Great Britain, 1962, August 10, 15 pages 5834 < From DDC-Technical Abslpact Bulletin, July 15, 1963.

BEADLE Ray, LANDAUER Paul & al. : Exploratory pro gramming studms for ionospheric ray tracing, Final Repro*, N 63-18736, 1962, October, 52 pages. 5826

KETTEL E : Funktionsgruppen yon Analogsystemen, Taschenbuch der Nachnchtenverarbe*tung, Springer Veda& 1962.

<( The work performed was the development of preliminary analog-computer programs for the solution of the twodimensmnal electromagnetic lay path equations. The system equations were simpl*hed and simulated to obtain informatmn on the ranges of the variables and to locate any pre-

5835 621.385.853 KACZMARCZYK J . Reslstance netwmk analogue of electrostatic fields having cyhndrical symmetry, P, zcglad Elektpon (Poland), Vol. 3, 1962, n" 6, pp. 33.0-354 (m Pohsh). 58~5

196__6_. . . .

Annales de rAssociatio,1 interlaationale pout" le Calcul analogique

N " 3 - - Judlet 1964

681.142 KLACHEV M . G , : Magnetic tape genmator of random pulse sequences, Avtomatika i Telemekhamka, Vol. 23, 1962, n ~ 2,

SPECIAL PURPOSE ANALOGUE COMPUTER, Gen. Precislon Systems Ltd., British (100) Patent 925589, May 8, 1963 5845

pp 186-189 (in Russian). 5837 KORN, Granino A. und KORN, Theresa M. : Elektromsche Analogierechenmaschinen (Gleichstromanalogiechner), tibersetzt und bearbmtet yon Heinrleh Katz, VEB Verlag Technik Berhn, 1962, 466 S. DlV[ 60.-5838 681.142

~{This patent descr,bes an analogue computer for simulating a dynamic process or system that involves a variable whose instantaneous rate of change is dependent upon its own instantaneous value in that it increases with increase in the instantaneous value. This relationship, sometimes called the law, occurs, for example, m nuclear reactm kinetics The range of simulated process change to which the computer can iespond is raised to a higher order by

KOSAREV A.A., M A R T Y N O V A.V. & Y A K U N I N A L.I. : A method of obtaining complex roots of an algebraic equation by using an analogue computer, Avtomati~a i Telemckhanika, Vol. 23, 1962, n ° 2, pp. 163-168 (in Russian). 5839

airangmg for tile computer to obey an equation relating the variable and the rate of change of a logaiithmic function c}f the variable. ~> From ComputeJ Abstracts, July, 1963 *** : Hybrid computers at the University of Arizona, Inatrtl. mauls and Control Systems, 1963. October, p. 119. 5846

KREBS H . : Le lnultiplieut g diodes - thdoiie, calcul et ~qttllibrage, ZetJschri[t fiir Messen, Steuern und Regeh6 (allemand), vol. 5, 1962, n" 9, septemb,'e, pp. 395-401. 5840 L'aiticle donne une &ude d6taill& de l'61aboration d'un multiplieur 61ectronique 7t diodes d'apr~s ie prlncipe de la diff6rence de 2 pataboles : erleur introduite par approximation lin&ire, effet des caract6ristiques des diodes, des tol& ranees des r6sistances, ~quihbrage, lissage par signal haute fr~qnence,

*** : Analog computers in Japan, Instruments and Control Sys/emr, 1963, August, p 153. 5847 ANALOGUE-TO-DIGITAL CONVERTER, Space Technology Labs., Inc, U S Patent (95) 3084339, April 2, 1963. 5848 {~This patent describes ,an anMogue-to-digRai converter designed to operate at high speed, which employs thin film superconduct,ve elements.~> From Computer Abstracts, July,

MEYER-BR(STZ : Analogiechensysteme und SimuLatoteu Taschebuch dm Nachrichtenverarbeitung, Sprmgei-Verlag 1962, p. 1218. 5841 681.142:621.374.32 N A T H A N A , : Input convertors for genetatms of symmetric functions. Including a synthesis of diode selection circuits, Proc. Inst. Electr, Eng. 1962, Vol, 109, Pt C, pp. 573 (Anemics, Vol. 5, 1963, n o 1, janvler, p. 36) 4969

1963. ~**: Mndel ieseaich a,ds civil engineering des,gn, Oz,d Euginee,ng apad public works review, (G.B.), Vol 58, 1968, n ~ 688, November, pp. 1411-1415. 5849 *** : Polyphase motors as dlgital-analog stepping devices, Data Systems Engineering, 1963, July-August, p. 50 5850 A description of techniques using logic circuits and polyphase motors to convert dLgltal information to analpg in-

NIKIFORUK P N . : Automatic control through signal polailties, Saskatchewan University, Canada, 1962, February 13, 4 pages. 5842 ~ An analogue computer study was made of an automatic control system m which signal polarities control the amount of proportional feedback that is used. The system cons,sts of a conventional second-order linear feedfmward sectmn, and a subsidiary feedback loop which produces the desired control actmn. The sensitivity of the system to changes in the damping and bandwidth of the hneai feedforward section was determined using sinusoidal and t,ansient inputs, It is shown that the system is insensitivity to damping vitiations provided that the damping is less than about critical. It is, however, quite sensitive to varmtions in the bandwidth. )) From DDC-Techuical Abshact Bulletin, September 1, 1963. 681.142

fmmation **$- New Product developments: Extensive line of analog computing modules opens more applications fm one-line control, Control Engineering, 1963, October, p. 109 5851 *** • X-rays and computers, Elect~onlcs, 1963, November, p 38. 5852 {~Bmmedical researchers find that digital and analog processing of radiographs enable them to make sharper analyses. In one case, a lung malignancy that could not be seen by the unaided eye became v,slble after digital pincessing. 5> ***: Simulation of an inverted pendulum, Instruments a,ad Control Systemsj 1963, October, p 127 5853

SIPOS I. : Analogue computer solution for correction of the coordinates of mechanisms in a blooming mill, Automatica si Electrouica (Rumania) Vol. 6, 1962, n '' 1, JanuaryFebruaty, pp. 33-38 (in Rumanian). 5843

gmeeritag,1963, July-August, p. 27. 585~ ***: Extending the transfer function computer technique to network analysis, Data Systems Engineering, 1963, November, p. 7. 5856 681.142 ADLER H. : On some development tendencle~ m analogue computing technique with specml reference to combined working of computing eqmpments, Wlss. Z. Tech. Univ. Dlesden (Germany) Voi 12, 1963, n ° 1, pp. 42-46 (in German). 5857 ADLER K. : The calculatmn of wave propagation in ;nhomogeneous media w,th an analogue computer, Nachrichtentechnische Zeitschri[t, 1963, October, p. 539 (in German). 5858

1963 ANALOGUE S Q U A R I N G CIRCU]T, Lockheed A,rctaft Corp., US. Patent 3088670 (96), May 7, 1963 5844 <{An input cmrent to be squared is passed through a heater element associated with a piece of polarised pyroelectric material provided with electrodes from which an output current ptoportmnal to the rate of change of ternperature of the material is obtained. 5> From Computes Abstracts, August, 1963.

***: Simulation of nuclear weapons effects, Environmental Qucwterly, 1963, September, p. 53. 5854 ***: Digitally programmed analog testing, Data System En-

Chronique bibliographic <> AEROV M.E., NIKITINA N I & RAZUMOV I.M. : Determmatmn of thermal fields in reactors using the method of electrothermal analogy, Chem. Industry (U.SS.R.), 1963 July, p 531 ( m Russian). 5859 621.372 45:681.142 AGGARWAL G.K. : A single operational amphfzer simulates general third-order linear-systems, Proc. Indian Acad. Sci Vol. 58, 1963, n ° 5, November, pp. 257-274. 5860 A G G A R W A L G K : General fourth order simulation using one operational amplifier, Indian ]ournal o~ pu~e and applied physics, 1963, Decembeh p. 409. 5861 AGGARWALL G K . : On fourth-order simulation by one amplifier, ]ournal o] Electromcs and Control, 1963, November, p. 449. 5862 ALAIS Pierre M . ' Calcui analogique - Etude dynamique de structures hyperstatiques ~ nmuds rigides par analogie 6Iectrique, Comptes Rendus de l'Acad~mle des Sczences, Paris, 1963, juillet, p. 356. 5863 DE AMBROGIO W . & DE BACKER W . : Analog simulation of a dynamic model of decision, Joint Nuclear Res. Center, Ispra Estab (Italy), N 63-20238, 1963, June, 27 pages. 5864 <> From NASA-Sci. Tech.

Aero. Repts., October 23, 1963. ANDERSON N . A . : Process control, simulation, Instruments and Control Systems (USA), vol. 36, 1963, n ° 6, June, pp. 122-125. 5865 ANDREWS J.M., JANNASCH C.F., MOORE C.E. & MUNSON J.K. : Process opumalization by hybrid computer, Paper presented at A.I.Ch.E. Houston, Texas, 1963, December 1-5 5866 <> ANSELME M, : S m le calcu[ analogique d'une a11e en ~coulemeat supersomque, C.R. Acad&~zie des Sczences, Paris, tome 257, 1963, n ° 21, 18 novembre, pp. 3115-3117. 5867 681.142 ARAI K : Precision of the supersonic blow-down wind-tunnel data-acquisition equipment, JouJn. Inst. Elect. Commun. E~lgr.r. Japan,, Vol. 46, 1963, n ° 3, March, pp. 336-342 (in Japanese). 5868 BAKER R . H , M c M A H O N R.E. & BURGESS R.G, : The diamond circuit, Lincoln Lab. Mass. Inst of Tech., Lexington. AFESD-TDR-63-64, 1963, January 30, 27 pages. 5869

197

<> From DDC - Technical Abstract Bulletin, July 1, 1963. BALKANYI Gy & BENYO Z . Analogue computers, Part. III, Elektrotechmkha, 1963, n" 10, p. 454. 5870 BARANCHUK E.I. : Determining the errors of analog computers m solving systems of differential equations, Izvestia V U.Z., Elektromekhanika, 1963, n ° 1, January, pp. 25-34 5871 < From Automation Express, n ° 1, 1963. 681.142 : 621.375.222 BARBER. D. : A wide-band computing amplifier, Electronic Engpg vol 35, 1963, April, pp. 240-242 (Annales~ Vol. 5. 1963, n o 4, octobre, p 225). 5409 <> BARBER D. : A high-speed analogue multiplier, Electronic Engrg. Vol. 35, 1963, April, pp. 242-245. 5872 <> BARBOUR C.. Development and fabric~ttion of a prototype airborne and ground encoding system, Final Report, AD426 999, 1964, Janua~, 2t pages. 5873 <
1.98

Annales de l'Association internationale pour le Calcul analogique

a serial train of pulses representing a digital number can be converted into an analog voltage in addition to the functmn of the analog-to-&glta[ conversion >> From DDC. Teck. Abst. Bull, March 15, 1964. BARNARD C.H., VOLLMER Jr D . H . ' Analog computer techniques for optimizing power plant operation, ISA Tlans. actiozls (USA), voi. 2, 1963, n ° 3, July, pp 27%286. 5874 <~Simple inexpensive analog control components may be utilized for control problems requiring computation. This paper discusses typical applications for power plant such as boiler demand controller, air flow control, fuel flow control, steam temperature control, feedwater control and condenser vacuum control. >>

N ° 3 - - ]uillet I964

Fhe system operates through a set o~ continuous profihng operations to cover the stereo area >>Since the input for the map compilation is in analog form as pairs of photographs, some precision analog equipment is required for the processing. The solution described avoids transferring the information to a digital store, and thus tremendously simplifies the sto,age and data handling problems. In effect, the integration of the computer with the analog elements produces a special purpose computer that is extremely efficient for the apphcatmn. The system represents a solution to a problem which until recently was believed to lie exclusively within the domain of human sensory functions, viz., the precision mechanization of stereo

BAR D.I.H. : Model simulation of salinity ,nilus[on in tidal

perception for the purpose of measuring altitudes from aerial

estuaries, The Engineer (G.B), 1963, n" 5627, 29 Novemher, pp. 885-89%. 5875 681.142 : 621.395.5 BARRY G. : Ray tracings of acoustic waves m the upper atmo-

photographs >> 681.142 BILLHARDT G. : The tiend of development in analogue computers, particularly m small machines, lViss. Z. Tech. Univ. D~esden (Germany), Vol. 12, 1963, n" 1, pp. 42-46, (in

sphere, Ion,'n. Atmos. TeJ~est. Phys. (G.B.), Vol 25, 1963, n o 11, November, pp. 621-629. 5876

German).

5882

BECKMANN Leo, GUTJAHR Liselotte & MECKE Reinhard : Darstellung yon Molektilschwingungen mit einem elektronischen Analogrechner, Speckochimica A~ta, 1963, September, p, 1541. 5877

BLECHMAN G., KUREK N. and a. : Final report on a study of hybrid computer organization, Tasker Instruments Corp, Van Nuys, California, Report n ° ASD/TM-70, 1963, February 21, 1 page. 5883

681.142:621,3.001.57 BENEDICT R . P . : Analog simulation, Elect~o-Technology (USA), Vol. 72, 1963, n o 6, December, pp 7%-90. 5878

BLOM J.F.' The influence of the switch on the transients of the three-phase induction machine, Ingenieur (Utrecht), [963, December 27, p. 16. 5884

BENNETT R . F . C . 'Hybrid digital/analogue servomechanisms, Electronic Engineer, 1963, September, p. 197. 5879 <~In a conventional servo system the erroi signal providing the input to the servo amplifier is derived from the difference between the input and feedback signals. The hybrid servo system discussed in this paper uses digital methods to undertake the subtractmn process and converts the digital error signal to analogue form to feed the servo amplifier. ,>

<>

BENNIER D DUNNE G . : High-tension, high-current regulated power supplies for analogue computers. Proc. IRE Austrl, VoI 24, 1963, pp 363-367. 5880 <~Two separate supplies designed to supply 3 9 kW and 3 k W respectively at 300 volts potential are described. The former is vacuum-tube controlled and the latter ~s a later developed transistor type. The needs of high voltage supply systems for a large computer are discussed in reiation to the supplies desmbed, together with the results achieved. A comparison shows a significant cost and space improvement over the use of blocks of smaller supplies. >> BENYO Z. : Analogue computers, Putt I ; Part II, Elektrotekhnika, 1963, n o 7-8, p. 325 ; n" 9, p. 408. 5881 BERTRAM S. Application of hybrid analog and digital techniques in the automatic map compilation system, Proc AFIPS 1963 Spring Joint Computer Conference, pp 105-112 (Annales, Vol. 6, 1964, n ° 1, janvier, p. 5~). 5518 ~ The Automatic Map Compilatmn System, developed and operating at Thompson Ramo Wooldridge abstracts terrain altitude information from aerial photographs by correlating the imagery appearing on stereo pairs, and outputs contour information and new photographs in which the imagery appears in ~ orthographic projection position. The system uses a small dig*tel computer to control analog elements that provide access to the photographic store and process the resulting signals to measure the altitude errors, the errors are then provided as an input to the computer,

BOOMAN G L, HOLBROOK W B : Electroanalytical controlled-potentiai instrumentation. Analytical Chemtsky (USA), vol. 35, 1963, n ° 12, November, pp 1793-1809. 5885 <~Application of elementary concept of feedback theory electrochemical cell models and analog computer principles to the design of electroanalytical controlled-potenti, l instrumentation on a nonempincal yet extremely practical basis. >> 681.142 : 621.317.7 BORUCKI Lorenz: Des Skalenstreckenumsetzer - Ein neuer Analog-digital Umsetzer, Atch. tech. Messen (Germany), 1963, n" 332, September, pp. 207-208 (in German). 5886 BOSCHER J e a n ' Calcul analogique - Etude analogique de l'influence de la pesanteur sur la distribution des concentrations au voisinage d'un cnstal en vo*e de croissance r~guli~re, Comptes Rendus de l'Acaddmle des Sciences, Paris, 1963, n o 3, p. 601. 5887 BOWMAN W H. : Analog simulation of batch distillation, Chemical Engmeelmg Piogsess (USA), vol. 59, 1963, May, pp. 54-58. 5888 BOYELL Roge~ L. & RUSTON Henry" Hybrid techniques for real-time radar simulation, Proc. AFIPS 1963 Fall Joint Computer Conference, p. 445. 5889 <~This paper summarizes results of a study of the design and application of special-purpose computers for the sxmul-

...............

Chronique bibliograph,que

at*on of air-to-ground radars. Specifically, the cnmputers must generate ,nfnrmation m real-time to simulate the &splay of a scannmg radar in a vehicle flying at Mach 3 and arbatrary altitude. The radar can view 10 ,~ square miles of let*am pet second with a resolutmn of 60 points per mile m range (five per microsecond). This paper describes a hybrid s,mulator that exploits both the redundancy m the ter, am and the repetitiveness caused by the radar scan pattern. An overall design is presented that affords reductions of 10a ,n storage capacity and computation speed, compared with a stra*ghtforward digital approach for generatmn of topographic profiles from which the display ts prepared. Details are presented of data formats and transfer schemes through the memory hierarchy, and of algorithms for the reconstruction of analog profiles from a digitally stored contour map >> BRIDGMAN Arthur : Comments on <>,I.E.E.E. TJanr on Electron/~ Computers, Conespondence, Vol. EC-12, 1963, n" 5, December, p 911. 5890 BROCK H H E W S O N E . Analog computing techniques applied to atmospheric diffusion continuous pomt source, ]. Appl. Meteorology, Vol. 2, 1963, February, pp. 129-144. 5891 <{Use of an analog computer to obtain solutions to the d*ffuston equation for the case of a continuous point source aloft is described The basis model used is that of a source located between an ,nversmn and the ground where the wind speed and eddy diffusitiv,ty are constant over the diffusing region. Solutions have been obtained with several special featmes added to the basic model : representation of the eddy diffusivity as a functmn of distance downstream; presence of the wind direction shear m the diffusing layers; and the presence of large-scale eddies which cause the meandermg of the plume. The solutions are presented as devialions from the reference solut,on (, e the one derived from the bas,c model) to show graph,cally the effects of each parameter change Several analog computing circuits are shown. >> B R O W N E.C. & Von ROSENBERG D.V. : Analog computation of packed tower distillation pmblems, Chemical Engineering Progress, 1963, October, p. 75 5892 B R O W N T. Steven' Simulatmn of mechamcal systems w,th posit,on hm,ts, Instrumentr and Control Systems, 1963, December, p 134. 5893 BRUBAKER Thomas A . A nonsaturating transistor switch for analog/hyb*id instrumentation and computers, Arizona U , Phoenix, Arts. Report N 63-23058, 1963, May, 22 pages. 5894 <~Two nonsatu,ating switching elements, a two-transistm nonsatmating switch, and a four-transistor nonsaturating sw,tch, which act as both current amplifiers and as switches, are described. The switches have low leakage, fast recovery, and when combined with fast, transistorized operational amphfiers, such precismn analog-hybrid circuits as analog memory elements and switched mverting amplifiers can be made to operate at frequencies, up to 100 kc, with switching rates to 50 kc. ~> From NASA.Sci Tech. Aero. Repts., December 1963. 681 142:621.35 BUCK R.P & ELDRIDGE R.W. : Instrumentatmn for cyclic and step-function sw*tching modules, Analyt. Chem. (USA), VoI. 35, 1963, n o 12, November, pp. 1829-1833. 5895 <~Use of operational amplifier switching modules serve as the basts of control units fox potentnostats or amperostats for cyclic or step-function voltammetry. ~>

199

BUNDORF R Thomas, POLLOCK Donald E. & HARDIN M.C : Analog model helps lower wind d,sturbances on cars, SAE Journal. 1963. October, p 36 5896 ~ Test-proved equatmns of motion yield clues to better handling response of cars to aerodynamic Inputs ~>. 621 389 ' 681 142 CALDWELL W F : Recognition of sounds by cochlear patterns, I.E.E.E Ttans on Mihta~7 Electronics, Vol. MIL-7, 1963, n° 2-3, Apr, l-July, pp 179-185. 5897 <~The elecmcal analog cochlea ,s reahzed as a 36-section, lumped-parameter, nonumform transmlssmn hue. The neural structure of the cochlea and auditory portions of the central nervous system are modeled functionally by means of 36 detecting and filtering ampl,fiers, termed loudness converters. The spat,al a, ray of the 36 loudness-converter outputs is a neural-equivalent pattern of basilai membrane motion >> From NASA.So:. Te~h. Ae~o. Repts., October 8, t963 CHAPELLE W E • Hybrid techniques for analog function genetatlon, Proc. AFIPS 1963 Spring Jo,nt Computer Conference, pp. 213-227 (Annales, Vol. 6, 1964, n" 1, janvier, p 54). 5531 <~This paper d*scusses techn,ques for employing hybrid concepts at the component and information representation levels to generate arNtrary functions. Particular emphasis is placed on the generatmn of mull*variant functions in analog systems. One reason for thls emphasis ts that while currently available diode function generators are adequate for univariant function generation, they generally result in a proh,bitlve amount of ctrcmtry in mull*variant applicat*ons. Approaches revolving servos have been used to reduce the eqmpment requirements, but these techniques are limited in the areas of speed and programming flex*billty. A multivariant function generation capability can, of course, be obtained by incorporating a digital computer in the system. The present approach, however, obtains this capabihty at a considerably lower level of complexity, ,s generally capable of higher speeds, and does not contain the limitations of sampled data systems. >> 681 142 CHRISTIE I. : The use of analogue computers for ctvfl engineering problems, Ptoc. Inst. Civil. Engineers, VoI. 25, 1963, July, pp 267-286 (Annales, Vol. 6, 1964, n ° 1, lanvier, p 54). 5533 ~> 681.142 : 621. CHURCHILL R.J. & GALLAHER D.F. : An analogue computer study of the collapse stage of the linear Z. pinch, ]ourn. Electronics Control. (G.B.), Vol. 15, 196:~, n" 6, December, pp. 6:~-640 5898

200

Annales de /'Association intenmtionale pour le Calcul analogique

N " 3 - - ]tdllet 2964

6212,2:681.142 COLE G.C. & CLARKE S.L.H. : Tile development of ARCH A hyblid analog-digital system of computers for industrial control. Journal of British LR.E., Vol 25, 1963, July, pp. 45-58 (Annales, VoI. 6, 1964, n" 1, janvier, p. 54). 5534 <> units which connect together the various controllms and regulators in a system to form a hierarchy of control are discussed. Some typical applications are referled to by way of example.>> COMER D.J', : Analog ratio Detector, IBM Technical Disclosure Bulletin, 1963, October, p. 18. 5900

DAUBERT A - Rept&entatmn sur module d'un ~coulement dams une cure avec gradient de tempdlature, Ed. F, Bulletin dtl Centre de Rethercher el d'ess,ti~ de Chatou (France), 1963, n" 5. 3910 DEHORS R. : Synthdtiseur 61ectromdcanique de forint d'onde ~. trhs basse frdquence, Revue Gdn&ale d'ElectJicit~, Tome 72, 1963, n" 10, octobre, pp. 499. 5911 DEKKER L. & HEINS W. : Resonance method for the deterre{natron of the elgenvalues of matrices on an analog cornpurer, Internanonal Association lot analog Computation Pro. ceedings, 1963, October, p. 204. 5912 <~Th,s article deals with some methods for the determination for the eigenvalues and eigenvectors of a matrix with teat elements with the help of an analog computer. The last presented <~resonance methodT> creates the possibility of finding all the mgenvalues with associated eigenvectms in the same way, provided that all the eigenvalues have small imagmary parts. By way of illustration simple exampies are given. >>

COOK K . S : An iterative analog determination of rocket burning time and weight distribution, Instruments and Control Systems, 1963, December, p. 129. 5901 COOPER A.R, Jr. & B U C H A N A N R.C. : Calculation of temperature distribution in glass tanks by use of a specialpurpose electric analog, ]omnal of the American Ceramic Society, 1963, December 21, p, 588. 5902

681.142 DELPUY LABEIRA R. : A study of water-hammer plessure by means of an electrical analogy, Ass. Mecan. Elect, (Spain), Vol. 40, 1963, n" 5, September-October, pp. 263-267 (in Spanish). 5913 DEMELLO F., DOLBEC ~., SWANN D., TEMOSHOK M. : Analog computer studies of system overvoltages following load rejections, IEEE Trans~ on Power Appar. and Systems,

COTTINI C., G A T T I E. & SVELTO V. : A new method for analog to digital conversion, Nuclear Inst,uments and Methods, 1963, August, p. 24l. 5903 681.142 CRISTEA P., D U l V [ B R A V A D , , L U C I A N L & SIPOS I. : Transistorized analog{c-numeric tens*on convertor for automatic-numeric systems, Automat. sJ Elect~onica (Ruman,a), Vol. 7, 1963, n ° 3, May-June, pp. 122-127 (in Rumanian). S904 CRONHJORT B.T : A time coding analog-to-digital converter, Proceedings o~ the IEEE, 1963, November, p 1541. 5905 D A H L I N E B. & NELSON ].M. : Hybridd, analog and dig,tal computation for simulation and optical control of chemical processes, Paper presented at A I Ch.E, Houston, Texas, 1963, December 1-5. 5906 <
1963, n ° 65, April, pp. 42-49. (Annales, Vol. 6, 1964, n ° 2, avnl, p. 134). 5731 < DENES P. : Computer processing of acoustic and linguistic informatmn in automatic speech recognition, US. Gov. res. Rept., AD 293 449, 1963, April 5, p. 131(A). 5914 <> t~mm Transactlons o~ the IEEE, Electronic Computers, August 1963.

Chronique bibliogral~hique VAN DEUSEN Bruce D . : Data acquisition and statistical annlysis using analog computer tectmlques, SAE Transactions, Vol. 71, 1963, p 350 5915 MasDONALD James R. : Electrical analogue for diffusion analysis, Patent 3.109.930, 1963, November 5. 5916 <~An analogue circuit comprising a hrst capacitor, a second capacitor, first means to produce output voltage functionally related to the voltage on said first capacitor but isolated from said voltage on said first capacitor, second means to produce an output voltage functionally related to but isolated from the voltage on said second capacitor~ third means to produce an output voltage rune/tonally related to the sum of said output voltage of said first means and said output voltage of said second means, a f,rst impedance connecting said output voltage of third means to said first capacitor, a second impedance connecting said output voltage of sa,d third means to said second capacitor, a third impedance shunting said first capacitor, and a fourth impendance shunting said second capacitor. ~> 681.142 : 621 389 McDONALD M. : The production of a pen recording from an analogue simulator C.R.T display, Medical Electronics and Bmlogical Engineering, 1963, August, pp. 317-321- (Anhales, Vol 6, 1964, n o 2, April, p 134). 5732 < DORNFEST A. & CASCIO G. : Differential balistic computer, 1.E.E.E. Trans. on Aerospace, Vol AS-I, August, pp. 58-63 EFTHYMIADIS A. : Transformer analogue computers, t~ical Time, 1963, Part 3, n ° 3752, p. 774, Part 4, n" p. 854,

wind 1963, 5917

201

the input to the measurement system has exceeded a selected threshold level. Counters record the total number of trials on which each threshold level has been exceeded, and over a large number of trials an accurate estimate is obtained for the probability that a level will be exceeded. The author describes the design and operation of Simrar in fixed time and sequential decision processes. Although its principal use has been in studies of signal detect/on, the versatility of Simrar makes it a useful device in more general statist/col studies. ~> FLEISCHER A A & JOHNSON E. : An analog to digital converter capable of nanosecond resolution, I E.E E. Trans. on Nuclear Sciente, Vol NS-10, 1963, Jaunary, pp. 31-35. 5923 FOX J C & WINDEKNECHT T G . ' Six degree-of-freedom s*mulation of a manned orbital docking system, Proc. AFIPS 1963 Spring Joint Computer Conference, p 91. 5924 ~ This paper describes an analog computer simulation of a manned orbital docking system conducted as a feasibility study In addition to determining the possibility of a human operator performing guidance and attitude control functlons -,vith a minimum amount of displayed reformation, additional proposes of the study were to determine terminal values of range rate, line-of-sight angle, LOS rate, lateral miss, relative attitude angle, and fuel consumption, pilot procedures and capabilities and, minimum display requirements. ~ FRANCESCHETTI Gtorgio Step approximation of a tapered matching or absorbing function, Instituto Unlversitarw Novale, Naples, Italy, RADC TDR 63 315, Contract AF 61 052 589 TN A, 1963, May 3i, 39 pages. 5925

5921

~ junction by means of a number of homogeneous layers has been investigated. The conditions required for a sufficiently good similarity in the performance of the two /unctions, the <~tapered ~> and the ~> one, have been derived, some numerical checkings have been performed; the procedure for getting the best approximation, by varying the thickness of the layers only, has been investigated; some considerations about the practical realization of the junction have been added. In part two, <~the inhomogeneous hne, or layer~ as a matching~>, the problem of the analysis of a matching junction, performed by means of analog computers, has been studied.~ From DDC-Technical Abrtract Bulletin, Octobe~ 1963 FRANK A & LAPIDUS Leon: Hybrid computation applied to counter-current processes, Paper presented at A.ICh.E. meeting, Houston, Texas, 1963, December 1-5. 5926

<~Using standard models of Heath analog computers with a hybrid modification permits the construction of a vetsatile laboratory tool in electroanalytlcal and optical instrumentation such as conducttmetry, polarography and colorimetry.~>

<~Of primary concern m hybrid computation is the effect of error propagation due to the mating of 4-decimal and 8-decimal computers. Consideration is given to this problem using the countercurrent staged process as an illustration. ~> FRANKS R G.E. : Apply analog techniques to equipment

Elec3754, 591g

ERICKSON J J. : Magnetic-analog to digital converter, Pro:.

tice, 1963, August, p 65. 5919 EVANS G.E . Preventive maintenance of analog components assures correct operation of computer center, Chemzcal Engmeering, (USA), vol. 70, 1963, 29 April, p 103. 5920 681.142:621.35 EWING G.W., BRAYDEN T.H. : The heath analog computer as a versatile analytical tool, Azmlytical Chemistry. (USA), vol. 35, 1963, n ° 12, November, pp 1826-1828

FIFE Dennis W. : SIMRAR : Simulated receiver and recorder for statistical measurements, International Association ]or Aualog Computatmn Proceedings, Vol 5, 1963, n" 3, July, p. 156. 5922 ~
design, Chemical Engineering (USA), vol. 70, 1963, 29 April, pp 108-111. 5927 FRANKS G E . " Hybrid Simulation of multi-stage system dynamics, Paper presented at A.I.Ch.E meeting, Houston, Texas, 1963, December 1-5. 5928 <
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Annales de l'Associatlon internationale pour le Calcul analogtque

N° 3 ~

]uillet 1964

of analog computer components by time sharing between each dynamic lump >)

GARNER H.G. : Steady-state heat and material balances, Chemical Engineering, (USA), vol. 70, 1963, 29 April,

FRINGS Walter: Calculation of ferro-magnetic material properties with electronic analogue computers, AJchlv fitr Eisenhiittenwesen, 1965, November, p. 853 (m German). 5929 < FUKU'I"OME H., TAMURA H & SUGATA K • An electric analogue of the neutron, Kybetnetik, 1963, September, p 28. 5930

pp. 116-117. 5934 GASKILL R.A., HARRIS J.W. & MeKNIGHT A L. " DAS A digital analog simulator, Proc. AFIPS 1963 Spring Joint Computer Conference, p. 85 (Annales, Vol. 6, 1964. n" 1, janvler, p 54). 5549 <{DAS is a programm,ng technique wh*ch makes a dig,tal computer operate much dike an analog computer. The app!ication of the technique to programming an 1BM 7090 computer is described. A DAS input program is essentially a description of an analog-style block diagram of the problem to be solved. In this sense DAS is svmlar to DEPI, but DAS

FURMAN G.G.'

Implovmg the quantization of random signals

by tithering, Rand Corp., Santa Monica, California, 1963, May, 35 pages. 5931 <~A numerical solution to the practlcal problem of determining the effects of independent quantlzer act,vators called dithers upon the statistical processing properties of the quantizer is presented. For the highly impmtant smusmdal and sawtooth dithers exact analysls yields for the first time answets, as functions of dithm amplitude, to the questmn of what upper bounds does the dither impose on the following : ( t ) correlation between the quantizer input and quantization noise, ( 2 ) v a l u e of the noise mean square, and ( 3 ) f i d e l i t y in the transmission of the mean squate, mean fourth and other even moments of the input. The above reformation, which also comprises a theorem for the quantization of sinusoids and sawtooths, indicates that the rarely used sawtooth is superior to the sinusoid. ~> From DDC-Techntea/ Abstract Brdletin, September 1, 1963 GAMP J. : Apache sub.routine for the automatic introduction of fixed and variable delay functions in analog problems, Joint Nucl. Res. Center, Ispra Estab. (Italy), Report N6323192, 1963, June, 64 pages. 5932 <> From NASA.Set. Tech. Aero. Repts., December 23, 1963. GAMP J • A systematic study of the simulation of time delays with standard analogue computm elements, Joint Nucleai Research Center, Ispra Establishment (Italy), Scientific Data Processing Center, N 64-11310, 1963, August, 61 pages (Annales, VoI. 6, 1964, n ° 2, avril, p. 134). 5933 <(Various methods of approximatmn of the delay function ace known, some of which can be represented by the stundard elements of the analog computer. It seemed to be useful to group the latter, to try others using the same equipment (interpolation methods), and finally to select the most luteresting cases. A handbook has been prepared illustrating these methods The choice of the delay function, which depends upon the available equipment, the duration of the delay, and the accuracy requ,red, is made easier by two tables. For each delay functmn the block diagram, the values of the coefficients, patch*ng check values and the region ,n which machine saturation does not occur are included )~ From NASA-Sci. Tech. Aero. Repts., January 23, 1964.

uses a more basic set of components and a simpler procedure for writing the Input program. A unique method is employed fo the rapid assembly of machine instructions to represent the intereonnection of components. The standald output format prov*des a complete record of the problem by printing the entire input program and all input data This is followed by a multiple column table of sequentml values of the desired output quantities. >~ From Transaclio*ls o/ the IEEE Electronic Computers, August 1963. GAUDIOSI J, : ~(Y code converter. Electronic Equip. EngJg., Vol. tl, 1963, January, pp. 27-28. 5935 <> GELMAN R.. Corrected inputs - A method for improwng hybrid simulat,on, Papel presented at 1965 Fall Joint Cornpurer Conference, p 267 5956 GIESEKING Darrell. An optimum bistable controller for incleased missde autopilot performance, IEEE Tlansactions on Automatic Control, 1963, October, p. 306 5937 <Liapunov's second method was used to derive the form of the control signal The analysis was based on the control of an autonomous, stable plant However, with onliy a slight change in the form of the signal, it was possible to stabilize a fmced unstable system The control signal was constructed by summ,ng the weighted states of the p'iant and using this to trigger a bistable amphfier. The output of the bistable amplifier was summed with the command to the system. The analysis and analog computer study used a third-order llnear*zed model of typical missile dynamics The compute, study has shown that it was possible to contlol this model for a wide range of aerodynamic parameters. The advantages of this controller over more sophisticated adaptive control systems that might yield similar control characteristics are its simplicity and its all-electrical nature. )~

Chrontque blbhographlque

203

GILOI W. : <~Hybrid ~> computers - a new concept, Elektronische Rechenanlagen, 1963, December, p. 262. 5938 <~Beyond the difference in the representation of numbers

without recourse to hybrid or track-hold equipment. The methods do not require a large installation and provide rapid convergence. Process applications are discussed. ~>

and the various technical realizations resulting from it, there exist other essential differences between analog and digital computers Each type has certain advantages and disadvantages The so-called <
H A G A N T.G : A flexible hybrid-computer linkage system, Engineering,1963, November, p 10 5945 (~ This article describes a new and successful approach to the construction of a linkage system between an analog, computer and almost any modern digital computer. Modular control circuitry permits a wide range of apphcations without the necessity for specific customer designs ~)

nical realization and range of applications. Not all of these possibilities are interesting from the economic point of view, and some realizations combine more chsadvantages than advantages. As a result, these studies are showing the possible future trend of development of hybrid computation. ~) GINSBURG M. In. : Functional analog-to-digital conversion in digita,l metering systems, Priborostroeme, 1963, n ° 2, February, p. 36. 5939 GLAESSER E., CALDWELL W F. & STEWART J.L : An electronic analog of the ear, Final Report, Wright-Patterson APB, Ohio, Biophysics Labs., N63-19453, 1963, June, 73 pages. 5940 < 681.142 GOL'DGEFTER

Extremal-type functional convertors, Elektrichestvo (URSS), 1963. n ° 12, December, pp. 7-13 (in Russian). 5941 681.142 GRATELOUP G . : Solutions p6rio&ques des 6quations diff6rentielles non lin6aires du troisi6me ordre ~t coefficients constants, C.R. Acad. Sci. (France), Vol. 257, 1963, n o 15, 7 octobre, pp. 2075-2078. 5942 GREEN C The Euratom computer linkage system, Joint Nuclear Research Center, Ispra Estab. (Italy), Italy Sca Data Processing ,Center, N 63-19915, 1963, 11 pages (Anhales, Vol 6, 1964, n ° 2, avriI, p. 134). 5744 V.I. :

<¢This report describes a project for the construction of a system for the linkage af digital and analog computers. It proposes two principles hitherto unused in this field, namely an asynchronous system for the regulat,on of the passage of data from the analog computer to the A-D converters, and an interpolation system at the output of the digital computer. ~> From NASA-Sct. Tech. Aero. Repts., October" 8, 1963. van der GRINTEN P.M.E.M. & KRIJGER W. : Processing of the auto and cross-correlation functions to step response,

International Association [Or Analog Computation Proceedings, Vol. 5, 1963, n o 3, July, p. 160. 5943 GRUET I C. : A multivariable convergence circuit for the analog computer, Paper presented at A I Ch.E. meeting, Houston, Texas, 1963, December 1-5. 5944 <~Techniques are described for efhciently performing multiple trial-and-error calculations on an analog computer

H A G A N Thomas G. : AmMog computers, Comput. Desig~l, 1963, February 5946 <~Analog-digital linkages have been in existence for several years and have already been applied successfully to some classes of problems The devices at present commercially available have however certain disadvantages closely related to their origins, since they were mostly developed for either digital reduction of analog trials data or for hybrid control systems. ~Ambilog computers, such as described by the author m his present article, represent a step forward and provide a fairly economical approach to hybrid computation. Both digital and analog operations are combined m one integrated system so that an effeciency is achieved which is far beyond the limits of eihter analog or digital computers. )~ From Computing Re~,iews, September-October, 1963 HALBERT Peter W : Hybrid simulation of an aircraft adaptive control system, Proc. AFIPS 1963 Fall Joint Computer Conference, p. 425. 5947 (~ Of interest is the speed of adaptation The time required in the adaptive process described here (for a reasonable quality of adaptation) is usually much longer than the characteristic time constant of the system. It is suggested that faster adaptations would obtain if the evaluation of system performance were made on the basis of predicted future aircraft performance as well as measured past performance. )>Accordmgly, an adaptive scheme is proposed wherein environmental changes are reflected in an on-board model of the aircraft control system. The model, in turn, is used to predict future aircraft performance and, m conjunction with an optimization program, to determine optimum controller parameters Pred,ction is done via high-speed integration of the model equations ; therefore, opt*mization is rapid, and a new set of controller parameters can be instituted almost as soon as a measurement of performance indicates a need for change. )> HAMBY R S : Computer analysis of CD motor control, Control Engineering, 1963, November, p. 100. 5948 H A M P T O N R., KORN G.A. & MITCHELL B. : Hyb, id ana. log-to-digital random-noise generation, Memo n ° 71, AD. 416 387, 1963, 3 pages 5949 <~Random-noise generators for random-process and statistical studies with analog and hybrid analog-digital computers should produce noise signals whose amplitude distribution, d-c, unbalance, spectrum, and RMS level is specified within the computer-accuracy hmits (0.l to 0.5 per cent), hi addttion, the noise must be free from periodic components; noise samples must be uncorrelated for delays exceeding, say onethousandth to one-ten-thousandth of a typical computer run ~> From DDC.Tech. Abst. Bull., December 15, 1963. HANKS Norris J. : The use of an analog computer to obtain present (on-line) velocity from current space position for

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Annales de l'As~orlation internationale pour le Calcul analogique

the range safety problem, Thesis, Umv Michigan, 1963, May, 61 pages. 5950 HANUISE G, & V A R O Q U A U X E. : Analog computation of the solution of the Bloch equations on a weak field. Apphcation to the nuclear spin gyro, La recherche adrospatiale, 1963, May-June, p. 41. 5951 MARRIS E.J. : The fluid network analyzer as an aid in solving mine ventilation distribution problems, Society o[ Mining Engineers Transactions, 1963, December, p. 391. 5952 HAUSNER Arthur : Multiple integxals on a non-repetitive anaIog computer, Proc. AFIPS 1963 Spring Joint Computer Conference, p. 205. 5953 HEINRICH, W O R T M A N N : Fernsprech-Verkehrmessgerate mit Analog-Digitai-Wandlern, Tell I, Archly fur technisches Messen m~d industrielle Messte~hnlk, 196t, September, p 193. 5954 HEMPEL Arvid B. : Exact simulation of a special first order partial differentml equation, lnlernational Arsocmtion ]or

N" 3 - - ]uillet 1964

under the control of a digital computer is described. The design of a demonstration pulsed-analog computer is presented and applicability of combined analog-digital compu. tation techniques to some computational tasks. The computation tasks were those for which it was felt that combined analog-digital techniques would provide some advantages over purely analog or purely digital techniques. The com. putatlonal tasks were: (1) the solution of partial differential equation.s - - here the studies indicated that combined analogdigital techniques can provide enough saving in computation time and computer hardware to make them useful in the control of chemical processes ; (2) speech synthesis - - these studies indicate that a general-purpose combined analogdigital computer can be a re17 useful research tool where flexibility in the model of the system under study and the control parameters of that model is desired ; and (3) digital computer cathode-ray tube display - - here the studies indi.

Analog Computation Proceedings, 1963, October, p. 196. 5955

cared that a fairly simple pulsed-analog computer can remove from the digital computer the time-consuming task of generating displays of the line drawing type and perform other tasks ~> From DDC.Technical Abstract Bulletin, August 15, 1963.

<~The paper describes a method which makes it possible to s,mulate a special partial differential equation of the first order on an analog computer without any approximations. The method usually requires little computer equipmerit, although a distance velocity lag simulator is uecessaly in most cases, ~ The simulation may be performed with either of the

HILLYARD W.F. : How to simulate large chemical processes, Chemical Engineering, (USA), vol. 70, 196t, 29 April, pp 118-122. 5962 HIZA 3 G. & LI C.C. : AnalytlcaI synthesis of a class of modelreference time varying control systems, IEEE Transactions ott Applicationr and Industry, 1963, November, p. 356. 5963

independent variables as continuous for any given value of the other. Examples are given of both ways of simulation. ~ HERNDON T.R. : Analog computer simulation of hazardous processes, Paper presented at A.I.Ch.E., Houston, Texas. 1963~ December 1-5. 5956 <~Most analog computer simulatlons of hazardous processes are undertaken for control studies and operator training, Some examples of this type of simulation are given m general terms. In addition, other areas m which the analog computer can be used for defining safe operation are described. )> 621.689' 66 HENNIG Wolfgang: Antriebe mit Analogregelung liar Dosierpumpen und andere Dosieranlagen, A.E.G. Mittedungen, 53. Jahrgang, 1963, Heft 11/12, S 413-415. 5957 Pompe de dosage, utilisable dans l'industne chimique, dont le moteur ~t courant continu est aliment~ par un dispositif r6gulateur ~t transistrons. La vitesse est par exemple r~gl~e en fonction de ia mesure d'un d~bit, 621.391.812.63

((A theoretical investigation is presented for synthesizing nonlinear controllers for a class of model-reference control systems, each consisting of a time-varying-parameter plant and a fixed-parameter model, with the model one order lower than the plant. The plant and the model may have different forms, provided that their stattc gums are equal to unity The controller, upon sensing the difference between the plant response and the model response, adds a proper controlling signal into the plant to make its output approach the model output, even though the plant parameters are unpredictably time-varying over known ranges. SpecificalIy, only the transient responses to step inputs are considered. A controller is synthesized to satisfy a sufficient condition for asymptotic stability of the null model-plant error, as determined by the use of the direct method of Lyapunov. This is, essentially, a general extension of L.P. Grayson's work to a variety of model-reference control systerns. Several sample systems have been simulated on an analog computer for experimental studies. All the test results have shown the controller thus synthesized to be remarkably effective. >>

HILL G.E. : Sudden enhancements of f-layer ionization in polar regions, ]. Atmos. Sci., Vol. 20, 1963, n o 6, November, pp. 492-497. 5958 HILLS F B . . Application studies of combined analog-dlgltal computation techniques, Contract N ° AF19 (604)6654, 1963, February, 66 pp. ; U.S. Go,vt. Res. Rept., Vol. 38, 1963, August 20, p. 97 (A). 5960

HOWELL Max : Automatic parameter optimization as applied to transducer design, Proc. AFIPS 1963 Spring Joint cornpurer Conference, p 191. 5964 681.142 HUGUES T.L. : Thermal insulation experiments simplified using an electtical analogue, /L & D. (G.B.), 1963, n ° 20, Apr,1, pp. 28-30 5965

HILLS Flank B : Application studies of combined analogdigital-computation techmques, Electromc Systems Lab., Mass., Inst. of Tech., Cambridge, AFCRL 6372~ February, 66 pages. 5961

HURLEY J.R. & SKILES J.J. : DYSAC: A digitally luted analog computer, Proc. AFIPS 1963 Spring Computer Conference, p 69 (Annales, Vol 6, 1964, lanvier, p. 56).

<~The concept of pulsed-analog computation in which high-speed, time-shared analog computing elements operate

simuJoint n° 1 558"/

<~A digital computer program which simulates a large electronic analog computer has been written for the CDC

Chronique bibliographique

205

1604 digital computer. In addition to providing many non. linear computing elements rarely found in electronic analog computers, the program accepts the input data in a form which may be written down directly from a block diagram or analog computer wiring diagram. Graphical output irt the form of plotted curves is available by use of a digital plotter. >>

JAMES E.W. : Analog computers prov,de electncal model. Chemical Engineering. (USA), vol. 70, 1963, 29 April, pp. 101-103. 5973 JOHNSON D.F. & JOHNSON R.A. : Themy and applications of the pole-zero analog computer, I.E.E.E. Transactions on AutomaticControl, Vol AC-8, 1963, n ~ 4, October, pp. 327-332. 5974

IDERESAN P.V & SATAINDRA Sash~bala A series type D.C. negative resistance for analogue computers, 1963, November, p. 417. 5966 <

<A machine called the pole-zero analogue computer was constructed to test the method and perform various operations such as the plotting of root loci, Nichols loci and equipotential lines. Other functions which can be performed include the plotting of magnitude, logarithmic-magnitude, phase-slope and phase characteristics of filters or linear systems in general. All of these applications are discussed and test results are presented.~> KATEMAN Gerrit & STORNEBRINK P.J. : A motor-piston buret with analog and digital output, Analymal Chemistry, 1964, January, p. 253. 5975 KERMODE R & STEVENS W F. : Experimental verification of the mathematical model for a conti.nuous stirred-tank leactor, Paper presented at A.I Ch.E. Meeting, Houston, Texas, 1963, December 1-5. 5976

IHNAT J. : A diode digital-to-analog conversion technique, Naval Research Lab. Rept. n" 5866, U.S. Gov. Research Rept., Vol. 38, 1963, June 5, p. 60 (A), AD 297 390. 5967 IL'NITSKIY L. Y a . : Pulse method of executing division operations, Translation from Russian Patent n ° 145019, AD-411-154, 1963, June 17, 4 pages. 5968 ~ The quotient from the division of two analog voltages is framed in form of a sawtooth voltage amplitude, derived during periodic charging the capacitor with voltage, proportional to the divided, and periodic discharges of same by pulses, following at a frequency, directly proportional to the divider.~> From DDC-Tech, Abst. Bull., November 1, 1963. INDIRESAN P . V . : A stoles type D.C. negative resistance for analog computers, The Radio and Electronic Engineer, vol. 26, (1963), n o 5, November, pp. 417-420 5969 IRNICH W . : Die Lfisung linearer Gleichungssysteme auf dem Elektron.ischen Analogrechner, Elektrontsche Rechenanlagen, 1963, n ° 4, p. 174. 5970 < ISAAC M . - DEBUONO V. : Deterministic and stochastic response of linear time variable systems, IEEE Trans., Vol EC-12, 1963, October, pp. 532-540. 5971 <> JACENKOW B. & D E M B S K I B. : Essai de d&ermination de l'6chelle dans les 6tudes hydrauliques sur modhle a&odynamique, Rozprawy Hyd, o techmczne (Pologne), 1963, n ° 14, pp. 3-39 (en polonais). 5972

+

<~The dynamic behavior of a particular continuous stirredtank reactor was experimentally investigated. The reaction between formaldehyde and ammonia was chosen for study, and kinetics data were obtarned. Then the reactor was operated in the unsteady state and the results were reported in the form of a phase plane plot. Finally, the nonlinear mathematical model of the system was analyzed on the analog computer and the results were compared with the experimental data Good agreement resulted between experimental and analytical results. ~> KING R.E. & BROWN W.A. : A Cumulative probability distribution analyzer, International Association [or Analog ComputationProceedings, 1963, October, p. 200. 5977 ~ A simple analyzer capable of portraying the cumulative probability distribution of random and deterministic signals is described. The instrument uses standard analogue computing elements and examples are shown of its application to a variety of signals. )> KING-SMITH E.A. : Computers and control Systems, Ansllahan Journal o[ Instrument Technology, 1963, November, p. 139. 5978 621.391.812.63 : 681.142 KOIDE F.T. : A computer method of H.F. ionospheric propagatton prediction and analysis, I.E.E.E. Trans, on Antennas and Propagation, Vol. AP-11, 1963, n o 5, September, pp. 540-558. 5979 KORN G. : Performance of operational amplifieis with elecironic mode switching, IEEE Trans,, Vol. EC-12, 1963, June, pp. 310-313. 5980 <
Annales de l'Association internationale pour le Calcul analogique

206

nically switched integrator (sample-hold or anitlog-memorv circuit), and various design requirements a:e listed >> KORN G A. : Analog/hybrid storage and pulse modulation. IEEE Transactions on Elearonic Comptae~s, (USA), voL EC-12, 1963, ~o 4, pp. 411-412. 5981 KORN Granino A. : Analog/hybrid storage and pulse modulation, Memo. n ° 67, AD-416 389, 1963, March 30 (Anhales, Vol. 6, 1964, n o 1, lanvier, p. 56). 5597 <( The advent of new very fast, digztally controlled analog computers poses the requtrement of storing and reproducing samples of analog functions f O) of length TR, where TR is the duration of one iterative> From DDC-Tech. Abst. Bull., Decembet 15, 1963. KOVALSKII Yu. A. : Level gages havi.ng a~ <~Analog-code >> converter, Isme~ael. Tekhn., 1963, September, p. 52 (in Russian). 5982 681.142 KOVANIC E.F. : A t2-Mc, Ni,ne-b~t digital function generator, LE.Edd. Trans. lnstmm. Meas., Vol. IM-12, 1963, n o 2, September, pp. 86-90. 3983 KRACER

Electronic Multipliers, 25, 1963, January, pp. 5-11. 5984 <( Two instruments which provide ~nalog multiplication it: all four quadrants are described. T h e principle used in the first multiplier is that of varying the saturation point of a ferromagnetic circuit in proportion to one of the inputs, so as to control the mark/space ratio of a chopper, which then modulates the other input. The second muB:iplier uses the principle of modulating the phase of one square wave with respect to another similar wave in proportion to one of the input signals Zero modulahon corresponds to a phase difference of ~ / 2 . This wave the~ chopper modulates the other input signal, and the resultant output is combined with the original square wave in a synchronous demodulator, After suitable filtering in both cases, the desired product is obtained. The accuracy is better than +-- 1 per cent of full-scale output. >> KRASIL'SHCHIKOV M.N. & KULAKOVSKII A.I. : A method for generating funrctions of several variables and schemes for its instrumentation, Automation and Remote ConDol s Vol. 24, 1963, n ° 8, August, pp. 1007-1015. 5985 A. :

Two-Four-Quadrant

Radio and Elearonic Engrg., Vol.

<> KRISTIANSEN Magne & CLARK L.G. : Hamilton's modified principle applied to nonlinear circuit problems, II~EE Transaction¢ on Coommunicatio, and Elechonics, 1963, November, p. 598. 5986 <
Modified Principle (PIMP) is used to solve problems. The amplitude, frequency, and limit cycle of a simple pentode oscillator :n order to demonstrate the principle A

N" 3 ~

]uillet 2964

standard graphical method finds the amplitude of oscillattons, and results are compared with experimental data. For the case under consideration, the H M P solution gives better agreement with the experimental results - - 6.6 % deviation as compared with 12.4 % for the graphical solution An approximate answer is also found for the transient behavior of a nonlinear system where the input is a step function. The result ts compared with an analog computer solution ancl shows good agreement. The solution of a simple relay secvo system is indicated in which the amplitude and frequency in the limit cycle along with its stabzlity are obtained by application of the one method of HMP. >> LANCTOT B.L. & COURVILLE L. : Analyse d'un r~seau d'acqueduc par calculatrice 61ectronique. L'Ingdnieur (C~ nada), VoL 49, 1963, n ° 196, pp. 27-30. 5987 L A N D A U H.G. : The accuracy of the analog solution of heat conduction problems, Journal o[ the Society [or IndusJrial and Applied Mathematics, 1963, September, pp 564-578 5988 LARROWE V.L. & CRABTREE R.E. : Analog computation of time-varying power spectra of seismic waves, contracts n ° AF 49 ( 6 3 8 ) 9 1 1 and AF 49 (638)1170, April, 1963, 62 pp., U.S.Govt. Res. Rept., Vol. 38, 1963, August 5, p. 6 (A). 5989 LARROWE Vernon L. & CRABTREE Raymond E. : Analog computatzon of time-varyir~g power spectra of seismic waves Institute of Science and Tech., University of Michigan, Ann Arbor, 1963, April, 62 pages. 5990 <7 From DDCTe;hntcal Abstract Bulletin, August 1, 1963. LAUER G., SCHLEIN H , OSTERYOUNG R.A. : A multipurpose electrochemzcal instrument for control of potential or current, Analytical Chemisty, (USA), vol. 35, 1963, n ° 12, November, pp. 1789-1793. 5991 <( Description of a multipurpose instrumental system for control of current or potential in electrochemical studies. The instrument is constructed of commerctal high-galn operanonal amplifiers. >> L A W T O N John G. : Investigation of analog a'nd digital com. munication systems (Phase 3 report), Cornell Aeronautical Lab., Inc., Buffalo, New York, 1963, May, 175 pages 5992

Ckromque blbhogra?hlqHe <> From DDC.Technlcd Abshacl Bulletm, October 1, 1963. LEIBMAN Yu. A. & SOBOLEV V.N. : Analog-to-digital converier for applying speech signals to a computer, Electrical Commttntcations (U.R.S.S.), 1963, August, p. 42 (in Russian). 599~ McLEOD J. (Edit.) : Simulation Council Newsletter - Instruments and control systems, vol. 36, 1963, n ° 9, September. 5994 1. Central States Simulation Council Meeting, 27 May 1963 - - H y b r i d simulation techniques by F.A. Brown, pp. 145-147. Summary of paper on hybrid techmques using PACE and IBM 7094 for simulation of a closed-loop control

207

behaviour of a body (particule) or mfme sesimal mass and is approximately realised by an artificial satellite in the Earth-Moon system. Description of use of the TRICE-PR 200 system in studying this problem. 5. Analog techniques : Approximating polynomials by relaxatlon by R.M. Turner and T.C. Anderson, p. 161. Function generation and programming transfer functions m operator notatmn necessitate the generatmn of polynomials of high degree which because of equipment limitations, may have to be approximated by polynomials of lower degree. Brief description of a technique which optimises the approximation. McLEOD J (Edit.) • Simulation Council Newsletter - Instruments and Control Systems, vol. 36, 1963, n ° 11, November. 5995 1 Eastern Simulahon Council Meetang, 17 June 1963. - - Simulation of a correlation detection device employing hybrid analog techniques by P.E. Roth, pp 149-150 Report of a study which made use of hybrid techniques to demonstrate feasibility of a concept for automatic rangefindin,g by triangulation. - - U s e of hybrid computers in nuclear reactors plant studies by J.E. Go&s, p. 150. Discussion of several classed of nuclear plant, studies which employed hybrid computing techniques such as core controller design, flux distribution and residual reactivity control. - - H y b r i d analog-to-digital display attitude indication

solve differential equations by simple methods, - - An algorithm for computing the Z-transform of t"/n! by M.L Criwell, p. 147. Presentation of an algorithm for determining the Z-transform of t"/n! from the Z-transform of t"-~/(n - - 1)!

by T P. Fitzgibbon, p. 150. Presentation of a technique for producing a pseudo three-dimensional display of a rotatable sphere. - - Parameter optimization by hybrid techniques by F.J. Melanson and P. Lanner, p. 150. Description of application of a high speed analog computer to optimization problems including automatic tte}ation and parameter search techniques. - - Hybrid electronic Models by H . M . Paynter, pp 150-152. Discussion of concurrent use of analog and digital computer~ and of the related concept for system modeling.

- - A Linear multivarlable servo structure by A.J. Rault and C.A. Hahjak, pp. 147-148. Summary of a paper discussing methods of studying mulhvar~able servos Elimination of steering rate gyro biasin a missile auto-pilot by R C. Eslinger, p. 148. Presentation of means for decoupling gyro bias in a missile autopilot and investigation of the effect on autopilot performance. 2. Southeastern Simulation Council Meeting, 14 June 1963.

2. A I A A Simulation for Aerospace Flight Conference (August 1963). The fire trajectory program: An example of automated simulation techmques by R.C. Brown, pp. 153-155. Study of the simulation on an IBM 7090 digital computer of the earth re.entry phenomena at high velouties which associated with earth re-entry from interplanetary missions. McLEOD J. (Edit.): Simulation Coucll Newsletter, Instruments and Control Systems, vol. 36, 1963, n o 12, Decem-

--Accessibility a major analog computer problem by M.E. McCoy, pp. 148, 151, 153 Shortned version of a paper discussing how analog computer installations should be organized and what equipment should be used so as to make the cornputer readily available to prowde rapid solutions to problems. Simulation of the restricted three-body problem using the TRICE - PB 250 System by D. Grady, pp. 153-157, 159. The restricted three-body system problem describes the effect of two bodies of finite mass on the dynamic

bet. 5996 1. Southwestern Simulation Council Meeting, 4 Oct 1963. - - In-plant applications for analog computers by E. Mitchell and G Mart Jr., p. 127 (reference only). - - Notes on the simulation of hydraulic and others systerns described by the wave equation by D.W. Crockett, p. 127 (reference only). - - Iteration techniques as applied to trajectory optimisation by /vl. Howell, p. 127 (reference only). ~ An iterative analog determination of burning time and weight distribution in a two-stage rocket by K. S Cook, pp. 129-134.

system. - - Algebralc methods in numercial analysis of ordinary differential equations by C.A. Hahjak, p. 147 Paper concerning the use of trapezoidal convolution to

-

-

-

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208

Annales de l'Association internationale pour le Calcul analogique

N ° 3 --

]uillet 2964

Description of a method for determining the optimum combmatlon of preopellant weight and burning time for each stage of a two-stage rocket to provide the desired tralectory of the missile. The acceleration is assumed constant for each stage and considered as a parameter,

dance, leakage current, daft or chopper offset voltage, noise, gain, frequency response, maximum rate of change of output voltage, and maximum output voltage and current. These considerations are reviewed and a design example is worked out to show how they are incorporated m a practical circult >>

2. Analog techniques. - - Simulat,on of mechanical systems with position limits by T. Steven Brown, p. 134.

MAKOV David M. ' A spherical triangle computer for marine aud air navigation, 1EEE Transactions on Aerospace and Navigational Electrop~ics, 1963, December, p. 324. 6002

LEVY J . C . . U n mod~Ie de r6seau repr~sentant le syst~me nerveux, Onde ~lecttlque (France), voI. 43, 1963, n ° 4, pp. 35-51. 5997 LEWIS E.R. : The locus concept and its application to neural analogs, IEEE Transactions on Bio.Medical Electronics, 1963, October, p. 130. 5998

~>

<>The behavior of each of the functionally distinct regions of the neuron is discussed in this paper. Simple transistor circuits which may be used to simulate individual regions are also described. Groups of these circuits may be connected to form analogs of the entire neuron or any part thereof. Special emphasis is placed here on the synaptic functions, with only a cursory discussion being given for the other regions It is hoped that networks of the type described in this paper will be of considerable use in future studies of the information processing capabilities of single nerve cells.*

MARAZZI Carlos: Analogue amplifier, Comission Nacional de Energia Atornica, Buenos Aires (Argentina), N 63-19449, 1963, 5 pages 6003 <~A servomultiplier which was constructed for an analog calculator is described. The analog calculator, which was previously constructed, consists of six amplifiers, four of which can be converted to integrators. W h e n combined with the servomultiplier, this calculator can be used to solve various problems of the type : dx/dt ~ b y z and - - ax dy/dt and to calculate the total energy liberated during the self-limited power emission from a fissionable material. >> From NASA-Sci. Tech. Aero. I~epts., October 8, 1963. 621.391.812.63 MARIANI F : Evidence for the effect of corpuscular radiation on the ionosphere, ]. Atmos. Sci. (USA), Vol. 20, 1963, u ° 6, November, pp. 479-491. 6004 MARKSON E.E. : Modification of Encke's method suitable for analog solution, AIAA Journal, 1963, July, p. 1701. 6005

LIPOVOY G . S . : Electric analogy of streamlining problems with break of the jet, Sopovidi Akad Nauk Ukr. SSR,

MATRANGA Gent J., W A S H I N G T O N Harold P., CHENOVETH Paul L. & YOUNG William R. : Handling qualities and trajectory requirements for terminal linear landing as determined from analog simulation, Report N63-19606, 1963, August, 34 pages. 6006

1963, n ° I0, p. 1292. 5999 LONIAX R.J. : A n analogue method of determining electrode shapes of electron guns having curved trajectories, Journal

MATSEN J.M.. Analog solutions for the growth of actlvation overpotential, ]o:ond oj the Electrochemical Society, vol. 110, 1963, March, pp. 222-224 6007

o/ Electronics and Conkol, 1963, September, p. 229. 6000 LUCAS P.. Designing operational amphfiers, Elect~onlc Des, Vol. 11, 1963, March 19, pp, 56-61. 6001

MATSEN J. : Analog solutions for the growth of activation overpotential, f. Eletrochem. Soc., Vol. 110, 1963, /~l~arch, pp. 222-224. 6008

<
<~The equation for build-up of activation overpotential has been solved on an Electronic Associates 2 3 1 R analog compute1 to obtain r/ as a function of time for cases in which the electrodeposition parameters remain constant during the charging process. The analog solution involves no approximations, in contrast to the several analytxc solutions which have been developed, and therefore gives a true picture of the charging curve which results from the theo,etical model. The solutions indicate that any attempt to calculate deposition parameters from a single charging curve would be subject to 1urge errors. Curves of d~/dt vs ~] seem to prowde greater accuracy in analysing experimental data and are certainly simpler from a mathematical standpoint. )>

Chromque bibliographlque

209

MAYBACH R.L., O'GRADY E.P. & W A I T J.V. : A master control clock system for a hybrid differential analyzer,

Computer Conference, p. 251 Paper presented at 1963 Fall Joint Computer Conference. 6015

ACL Memo n ° 81, AD-414456, 1963, May, 13 pages. 6009 < From DDC.Tech. Absl. Bull, December 1,

<>

1963. MENNE D.F. : The performance of a skyscreen system using an electrical analog computer, Library of Congress USA Report AD-405808, 1963, January, 37 p. 6010 <~The performance of a skyscreen system using an citetrical analogue computer was demonstrated in a series of laboratory tests. Inputs for the computer are continuous analogue presentations of the unrestricted azimuth and elevations angles to the target and the output is the positioning of a skyscreen aperture at the focal plane of the camera. The criterion for evaluating the performance of the system was the difference between the observed position of the skyscreen aperture and its corresponding theoretical position for selected inputs. The mean of the differences for all tests was 0.38 ram. Test results indicate the acceptabihty of an electrical analogue computer as a component of a skyscreen system.>> From DDC.Technlcal Abstract Bul-

MORRISON C.F. : A practical instrument synthetizer, Analyrical Chemistry, (USA), vol. 35, 1963, n ° 12, November, pp. 1820-t826 6016

letin, September 1, 1963 MENNE Donald F. : The performance of a skysc, een system using an electrical analogue computer, Aberdeen Proving Ground, Ballistic Research Lab, M d , N63-16716, 1963, January, 34 pages. 6011 <
<> MOLLER Klaus & WESSEL Josef: The trajectories of parttcles in a pneumatic separator calculated with an dectionic analog computer, Atomic Energy Society of Japan, Journal, 1963, June, p 235. 6017 ANALOG MULTIPLIER Nat Research Development Corp., British Patent 929064, June 19, 1963. 6018 <{This patent describes an analogue multiplier comprising a multiwbrator circmt which provides a square wave signal whose mark/space ratio varies according to the value of one input, and a switching circuit iespnnding to the square wave signal to control the appIication of the second input to an integrating circuit whose output represents the product. ~> From Computer Abstractr, August, 1963. ANALOGUE MULTIPLIER, U.S. Atomic Energy Commission, U S. Patent 3088671, May 7, 1963. 6019 <~A high-speed analogue multiplier is described which has no moving parts and employs a transistor controlIed voltage divider. >> From Computer Abstracts, August, 1963

continuous analog presentations of unrestricted azimuth and elevations angles to the target, and the output is the positinning of a skyscreen aperture at the focal plane of the camera The criterion for evaluating the performance of the skyscreen apertme and its corresponding theoietical position for selected inputs. ~> From NASA-Sci. Tech. Aeto.

MURRAY M T. - - Tidal analysis with an electronic digital computer, Comit6 central d'oc4anographm, Cable,s oc&nogJaph~ques(France), 1963, n" 10, December, pp 699-711 6020

Repts., July 23, 1963. MEYER R.F. Further comments on analogue networks to obtain heat flux from surface temperature measurements,

MURRAY R.W.' Power of time and exponential cunent chronopotentiometry, Analytical Chemislly (USA), voi. 35, 1963, n o 12, November, pp 1784-1789 6021

National Research Labs., Ottawa, Canada, NAE LR 375, 1963, March, 1 v 6012 <> From DDCTechnical Abstract Bulletin, September 1, 1963. MITCHELL Baker A : A hybrid/analog-digital one-parameter optimizer, Memo n° 69, AD-416 388 1963, April 8, 15 pages 6013 681.142 MITCHELL E.E.L. & MARR G.R. Jr. Blending by analog computer, Co,tJol EngiJzeering, Vol. 10, 1963, n" l l , November, pp 107-110. 6014 MIURA Taken & IWATA Junzo : Effects of digital execution time m a hybrid computer, Proc AFIPS 1963 Spring Joint

> NADLER Morton: An analog-digital character recognition system, I E.E.E. Trans on Electronic Computers, Vol. EC-IZ, 1963, n ° 5, December, pp. 814-821. 6022 <~The importance of solving the measurement problem in character ,-ecognition systems before or collaterally with the decision problem is messed. Measurements themselves are decision processes. In the system discussed here the measurements constitute decisions on the probable presence and most likely orientation of the edges of the character strokes in each elementary scanning area. This permits an effect,re and economical sequential feature detection in which the statistcal vai,atmns due to printing and scanning variations are taken into account. The article concludes with a discussion of the iole of the computer in recognition-logic designa>

2t0

Annales de l'Assodation internationale pour le Calcul analogique

N" 3 - - Juillet 1964

NASSIMBENE E . G . : Analog-to-binary converter and formant tracker, IBM Technical Disclosure Bulletin, 1963, Novembet, p. 14. 6023

ntative comparison of errors due to drift, noise, and bandwidth, ~s made between diode function generator and the triode-diode function generator for a particular case. >> From

N A T H A N A. : Interpolating multipliers and related inter-

NASA-Sct. Tech Aero. Repts., December 23, 1963.

polators, Proc. IEEE, VoL 51, 1963, November, pp

1549-

1554. 6024 ~ Piecewise-linear and nonlinear lnterpolatms (PLI and NLI) for the generation of a function of one variable product an output signal from two or more input signals which represent tangents to the function. They have the additional property that an additive signal which is simultaneously applied to all input terminals is transferred through them~ This property is made use of in order to facilitate the generation of functions of two variables that can be written in the form: F (x, y) ~ [ ( u ) - t - g (v), where u and o are linear functions of x and y. The method is particularly suitable when f and g are convex or concave functions ; the major applications are interpolating multipliers for which this paper provides a simple theory of operation. ~> N A T H A N A. :Linear and nonlinear interpolators, IEEE Trans., Vol. EC-12, 1963, October, pp. 536-532 6025
A.

Nathan,

U.S.

Patent 6026

~
681.14.001.57:061.3 NOORDERGRAAF Abraham, JAGER Gerard N. & WESTERHOF Nicolaas, Editors : Circulatory analog computers, Proceedings of the Symposium on the Development of Analog Computers in the Study of the mammalian circulatory System, Woudschoten, Zeist, The Netherlands, April 19-20, 1962, 141 pages, Amsterdam, North-Holland PuN. Co., 1963. 6029 NORBIN N.H. : Circle tests with a radio-controlled model of a cargo liner, Meddelanden fran stante~s skepprprovnin~-

anstalt (Suede), 1963, n" 53, pp. 1-71.

60~0

Basic roles for analog computers, Chemical Engineering, (USA), vol. 70, 196S, 29 April, pp. 99-100 6031

PHILLIPS J.C

POPOVIC D.B.' Influence des temps de commutation des relais sur la solution des ~quations diff6renfielles par calculateur anaIogique, Elektronische Rechenanlagen, t. 5, (1963), n o 5, pp. 211-216 (allemand). 6032 POPOVIC D.B. : The influence of switching times of the analog computer control relays on the solution of differential equations, Elektromsehe Rechenanlagen, 196~, October, p 211. 603~ <
which enables a one- or two-quadrant multiplier to be used for fou.-quadrant multiplication. >) From Computer Ab. stracts, July, 1963.

PROPST F. - LOSCHER E. : Apparatus for the study of ejection of Auger electrons from solid surfaces, Reo. Sci. Inst~., Voh 34, 1963, May, pp 574-579. 6035

NIGMATULLIN R. Sh : The general equation and electrical analogue of an electrolytic cell with a stationary spherical microelectrode, Doklady Akadvm~t Nauk S.S.S.R.., 1963, n*' 6, p. 138;5. 6027

<~A stainless steel apparatus for the study of the ejection of electrons from solid surfaces is described. The bakeable vacuum system consists of three sections and is capable of' maintaining pressure in the 10-~" mm Hg region. Each of the

NISSON Calvin J : A n analog triode-dlode function generator, Based in M S . Thesis, N 63-23174, 1963, May, 95 pages, 6028

three sections is pumped via a liquid mtoger~ trap by a mercury diffusion pump Typical pressures under operating conditions are 10-" mm Hg in the target section and 10-"

<( The detailed design of a practical triode-diode function generator is carried out stage by stage, and the transfel function for each stage is obtained. Stability of the function generator is studied both in terms of it being a linear system and a simple nonhnear system. The triode-diode function

mm Hg in the iron-source section. The ion-lens system is described and a convenient method of construction of ion lenses ts illustrated. A description of a single analog cornputei that determines the yield and the energy distribution of the elected electrons is given )).

genelator is evaluated analytically and be tasting a prototype. Test procedures are described and evaluated. A quan-

PROPSTER C.H., J r . . Electronic analog output, IBM Tech~ical Disclomre Bulletin, 1963, November, p 24. 6036

Chronique bibliographlque P U K H O V G. Ye Fundamentals of the general theory of quasi-analog systems, Foreign Tech Div., Air Force Systems

211

to represent cruising conditions, the other to represent approach conditions. >>

Command, Wright-Patterson Air Force Base, Ohio, 1 9 6 3 , January 22, 34 pages. 6037 681.142

RUSZKAY R.J • How to analyze control program for distillation column, Chemical Engmeeikzg (USA), voL 70, 1963, 29 April, pp 112-115. 6044

RAWLINGS B. : Some applications of electr,cal network analogues to the elastic analysis of rigid frames, Internat. ]. Mech. ( G . B ) , Vol. 5, 1963, n o 6, December, pp 461-473. 6038 <>

SAVINOV G.V. & VELERSHTEIN R.A . The use of electromc analogue computers in some extremal problems, Joint Pubhcation Research Service, Washington, D.C, AD-408869, 1963, May 17, 11 pages. 6043

RENNERFELT J : An analog computer for oxygen sag calculatlons, Int ]. Ak IVat. Poll.~ vol. 7, 1963, June, pp 367-372. 6039 < ROGERS E

Integrator for smgll pulsed and direct currents. 6040 <~A solid state electronic integrator capable of integrating and digitizing small currents has been developed. In a recent experiment, pulsed proton beams with an average value of 10 -" A. have been integrated and measued with a 0.1 per cent accuracy Pulsed or direct currents can be measured accurately down to a lower limit imposed by uncompensated variations of the order of 10-:~A. in input leakage current, The current to be integrated is applied to a Miller integrator circuit which employs a commercially available sohd-state operational amphfier. A diode-switched charging circuit gated on and off by the integrator output voltage <~pumps down >> the integrator capacitor with discrete units of negative charge, slmuitaneously delivering digital output pulses to an external counter. An output voltmeter prowdes analog readout of

Rev. Sci. Instr., Vol. 34, 1963, June, pp. 660-663.

SAVINOV G.V & VELERSHTEYN R A . . The use of electromc analogue computers m some extremal problems, Translation from Vestn. Mosk. Unlv. (Moskow), 1962, n ° 1, p. 60 N 64-10585, 1963, May 17, 13 pages. 6046 <~Electronic analog eompu.ters are used to solve problems tu mathematical physics, vibratmn theory, and also game theory. A given continuous function q~ (x,, ., x,) having a predeterminated range of values of the variables x,, ..., x,~ ~s solved for the point x°,, x%, . , x", of this region at which the function q (x, . . . . x,) has an extremal value, that is, a maximum or a minimum value, in comparison with all the points of that region located qu*te close to the point ~'",, x°.... . . . . x". >> From NASA-Sci. Tech, Aero. Repts., January 8, 1964 SCHMID Hermann • An operational hybrid computing ~ystem provides analog-type computation with digital elements, LE.E.E. Trans. on Electronic Computels, Vol. EC-12, 1963, n"5, December, pp. 715-732 6047 a A computing technique is described which employs several computing elements to solve algebraic, transcendental and integro-differentia'l equations operatmnal-digital. Information between the different computing elements as carried m the form of pulse-width signals. Each computing element employs only digital circuits, but in an analog fashion. >>The proposed hybrid technique overcomes the accuracy hmitatlons of the conventional analog technique and the analog-digital interface problems of the various digital technlques, while it retains many of the advantages of both the analog and the digital technique..

residual fractional charge increments )~ ROSENTHAL Jerome A. : A pulse modulator that can be used as an amplifier, a multiplier, or a divider, LE.E.E. T~'ans. on Instrumentation and measuremenI, Vol. IM-12, 1963, n ° 3, December. 6041

>>In general, hybrid operational computing elements are insensitive to environmental, component tolerances and power supply changes, have small size, small welght and mimmum power consumption (only one supply voltage required) and can be instrumented with 100 per cent integrated circuits

ROSS D . S , & Q U R E S H I I,H, : Boundary value problems in two-dimensioal elasticity by conducting paper analogue, ]ournal o[ Scientific Instruments, 1963, November, p. 513. 6042

>>Although the proposed hybrid technique has no basic accuracy limitation it will operate most economically with accuracms below one part in 10~. Similarly, it is not practical to operate wtth repetition frequencies in excess of 10 kc.

RUSH W . :Stmulator checks autopxlot, Instr. and Control Syste~ns, Vol. 36, 1963, April, pp. 143-145 6043

Maximum accuracy can be had only at very low repetition rates, while maximum speed can be had only at very low accuracy, since the product of repetition rate and accuracy is a constant for a certain quality of digital c~rcuits.

<
>>Finally, the inherent storage capability and the case wlth wh,ch puise-wldth s~gnals can be switched facilitates sequential operation of hybrid operational computing elements. Therefore, cost, s,ze ~tnd weight can be drastically reduced if bandwidth can be s,'crffied ~> SCHMIDT W.E. : Use of the analog computer to study cushion characteristics and package design, 31st Syrup. on Shock, Vibration and Assoc. Environment, Part II, Phoenix, Ariz., 1962, October 1-4, /vfarch 1963, p. 257, From NASA-Sci. Tech. Aero. Repts., 1963, July 23. 6048

212

Annales de l'Assoclation mternationale pour le Calcul analogique

N" 3 - - ]uillet 1964

681.142 : 621.35 SCHWARZE W.M., SHAIN I : Generalized circuits for electroanalytical instrumentation, A•alytical Chemisky (USA), vol. 35, 1963, n ° 12, November, pp 1770-1778. 6049

681 142 SILVERMAN D , LASH C.C & HADLEY C iv. : MURAC, a multiple reflection analog computer, Geophysics (U.S.A.), Vol 28, 1963, n ° 6, December, pp. 975-989. 6057

< SCOTT J.R. : An analysis of some standard model results,

<>Synthetic record which include multiples have been computei by both digital and analog computers. Each has advantages and limitations which make them complementaty rather than competitive processes The digital method using the IBM 704 provides completeness and accuracy but is not well adapted to the study of many small changes or tests The analog computer reported here utilizes a new concept which makes it possible to achieve a speed and convenience

Quaderly Tm,rsacttons, Royal Institution of Naval Arch*reels, (G.B.), Vol. 105, 1963, n" 3, jmllet, pp 337-354. 6050 SEDLEWICZ Paul G. & ONLEY Robert E : Solid state analog-to-digital converter, Aerial Measurements Lab., Notthwestern University, Evanston, Ilhnms, 1963, January, 27 pages. 6051 SEDLEWICZ Paul G. & ONLEY Robert E . Solid state analog-to-digital converter, Quarterly Progress Repts., n ° 5, AD-415 627, 1963 May-July, 20 pages. 6052 SEEGMILLER W . R . : Hybrid &gltal analog pulse time techniques for flight control system computers, IRE TJatasachon.~ on ComuMcatiotz and Electronics, 1963, September, p. 498 6053 <>The basic feature of this new technique is a novel cornbinatmn of analog input circuits, and the drift-free memory of a digital counter, with a simple method of converting to pulse-width modulated outputs for analog multiplication and servo <>signals. The flight control computer applications presented include the functions of integration, memory, multiplication, and attitude synchronization >> SEELIG ivrie&ich iv. & KUHN H. ~r-Elektronenzustand dutch Direktermittlung der Raumlichen Wellenfunktmnen m,t einem Analogrechner, Zedschpl[l ]ii, Natmforschung, 1963, November, S. 1191. 605~I SHIPPY David J . . Electrlcal analog of the potential dim,button in two-dimensional unsteady flow fields, Disseltallon Abstracts, 1963, October. 6055 SIHOV B.O. : Improving the accuracy of the digital integration, Translation from Avtomatyka, 1963, n o 1, May 31, p. 41 6056 <> From NASA-See. Tech. Aero. Repts., January 23, 1964.

not previously available. >>The design of MURAC features two delay lines and a series of circuits which provide appropuate amplitude relations at the inferfaces between formations. One delay line carr,es up-traveling components, one the down-travehng, while the tiansm,ssion and reflection at the 20 interface units inserted in the lines is accomplished by means of potentmmeters, amplifims, and switches. As a consequence, the computer is readily set up and is adaptable to a wide variety of problems. Examples of the use of MURAC are given in the report >> SIMLEY Vern M. & STUART Frank E. : Analysis of mfraaed interference filteis by means of an analog computer, ]ournal o~ the Optical Society of America, 1963, September, p. 1078 6058 SLEEHAN C.J. and ANDERSON T . . Continuous Electronic Polar Resoiver, 1,2str. and Control Syst, Vol 36, 1963, February, pp 141-142. 6059 <> SMILEY Vern N. & STUART Frank E. : Analysis of mfraied interference filters by means of an analog computer, ]omnal of the Optical Society o] Ameriea, 196~, Septembei, p 1078 6060 SMITH D E. : A.C. polarography employing opelational amplifier instrumentation, Analytical Chemishy, (USA), vol. 35, 1963, n ° 12, November, pp 1811-1820. 6061 <>

Chronique bibliographique

213

SMITH Robert S : On-line &gital computatmn of the vattance of a time series, illinois UnLvets,ty. Uibana, TN 61, 1964.

l{e;., Vol 68, 196~, n" 9, May, pp 2791-2815 (dnn,de~, Vol 6, 196'1, n" 1, lanviel, p. 59). 5559

Match 20, 6 pages. 6062 < From DDC-Technlcal Abstrctct Bldletin, September 15, 1963 681.142' 621.313 322-81 SOKOLOV N.I., GUREVICH Yu. E & KHVOSHCHINS-

<¢Routme recording of long-petmd setsmomete, signals in analog form on magnetic tape makes it possible to perform a w~de vaiiety of analyses rapidly and efficiently. Examples of analog analyses of seismic waves from e,gth distant earthquakes, a large nuclear explosion, and the mlcroselsm storm assocxated with a hurricane illustrate some of the advantages of th,s type of recordmg. Results from the rotation of apparent instrumental coordinates to longitudinal horizontal, transverse horizontal, and vertical ; multiplication of vertlcai and longitudinal components; and integration of this product serve as examples of the advantages of thls type of data ttansformation. >> From NASA-Sci. Tech. Aero. Repts., August 23, 1963.

KAYA Z - G . An analogue computer study of large turbogenmators in parallel opexatioo, ElektrJchertt,o, 1963, n o 10, October, pp. 5-13 (in Russian). 6063 SOLHEIM Ole Andreas: Optimum temperatute profiles m tubular reactors, lntetncttional Assoc, a/io, Jot An,dog CompH/ation ProceedDags, 1963, October, p. 210. 6064 <>In a tubular reactor there may be bounds both on the temperatme and the temperature gradient It is shown how such inequality constraints can be handled. At the end of the paper there are given a few examples to illustlate the procedure developed. >> SPILLERS

W.R.

Network

analogy

for linear structures,

American Soc, ety o/ Owl Engineers P~oceedings, Journal of the Eng,;eering Mechanics Dlvis,on, 1963, August, p 21 6065 SPINRAD R J ' Analog-to-digital conversion of any k out of n signals, Revzew of scxenll]lc Instruments, 1963, November, p. 1269. 6066 SPROUSE J A & McGREGOR W . K . . Investigations of thrust compensatmn methods, Arnold Eng. Develop. Center Report N 63-20023, 1963, August, 43 pages. 6067 < From NASA-Sc/ Tech. Aero Repts., October 8, 1963 SUSSMAN N a t h a n . Differential square law analog multiplication, Dissertation Abstracts, 1964, January. 6068 621.317.39 S U T T O N George H. & POMEROY Paul W • Analog annlyses of seismograms recorded on magnetic tape, J. Geophys.

681.142 SYDOW A : Series development diffmenttal equations by direct culation on electromc analogue Univ. Dresden, Vol. 12, 1963, man).

and the solution of partial methods of variation calcomputer, Wiss. Z. Tech. n" 1, pp. 53-56 (in Ger-

6069

SYLIN G : Traceur automatique de trajectoites de patticules charg6es, Anoales de l'Assoc:ation t#tetnattonale pout" le cod~ul analogique, Vol. 5, 1963, n ° 3, juillet, p. 150. 6070 <> TALKIN Albert I. : Programming an analog computer for a large class of trajectories, Repmt N 63-19120, 1963, June 20, 12 pages. 6071 < From NASA-Sol. Tech. Aero, Repts,, September 23, 1963. 318.5 : 681.14.001 37 TETELBAUM I.M. : Elektrische Analogierechenverfahren. Obersetzung a.d. Russischen, 285 Abb., 320 S., Berlin : VEB Verlag Technik ; 1963. 6072

21.4

Annales de l'Association internationale pour le Calcul analogique

N ° 3 - - Juillet 1964

681.142 " 621 ~17.79 THOMASON E.M. ; A solid state digitizer for mass spectrometers, Analyt. Chem. (USA), Vol 35, 1963, n ° 13, December, pp. 2155-2157. 6073

68[ 142 WAGER J • A short term analogue data storage unit, Elechonic Engpg., Vol. 35, 1963, April, pp. 254-256 (Annales, Vol 5, 1963, n ° 4, octobre, p 227). 5446

ANALOGUE TIME DELAY DEVICE, Atomic Energy of Canada Ltd., U.S. Patent 3087143, April 23, 1963. 6074 <~A device, for use in conjunction with analogue cornputers, which provides a variable time delay, comprises capacitors which are switched under the control of relays to charging and discharging clrcuits.>> From Computer Abstracts, July, 1963.

<~A satellite born experiment to measure electron density required that data be stored for periods up to 51 sec duration in order that the information should be contlnuousty availabe for sampling by one of the satelhte's two telemetry encorders By using capacitor storage techniques an overall accuracy of better than 5 per cent 15 mV is obtained for a working temperature range of 0 ° to 55 ° >>

681.142 : 621.35 TOREN E.C., DRISCOLL C.P. : A digital readout device for

WAGNER W.F. : Analog methods aid simulation of reaction kinetics, Chemical Engineering, (USA), vol. 70, 1963, 29 April, pp. 104-108. 6083

analog integrators, Analytical Chemistry (USA), vol. 35, 1963, n" 12, November, pp. 1809-1810. 6075 ¢¢Description of a circuit capable of direct digital readout of analog integrators within a relative error and relative standard deviation of +- 0 1%. ~> 681.142 TROITSKII V . A . : Electromechanical function convertors, l~tektrotekhnika (USSR), 1963, n" 12, December, pp. 36-40 (in Russian). 6076 TRUTWIN W.

On some fundamental solutions of equation

w',. =/= N (x, z) w obtained by the aid of analog computer, Bulletin de l'Acad~mie polonaise des Sciences, 1963, n ° 3, p. 113.

6077

UGODCHIKOV A.G. On the Construction of con;urinal mapping functions by means of electric analogy and Lagrance interpolation polynomials, Lectures of the Acad. Sci. Ukr, (USSR), 1963~ n" 11, p. 1424. 6078 681.142:621.35 UNDERKOFLER W.L., SHAIN I. : A multipurpose operational amplifier instrument for electroanalytical studies, Analytical Chemistry (USA), vol, 35, 1965, n ° 12, November, pp. 1778-1783. 6079 ~¢Description of a multipurpose instrument based on operational amplifiers. Prewired plug-un units are employed to convert the instrument to a form suitable for polarography, chronopotentiometry, electrolysis and coulometry ~> VALLESE L.M . Research and investigation on the transmission line analog of some function of the cochlea, ITT Federal Labs., Final Report, June 62-January 63, 1963, April, 84 pages. 6080

WAIT John W : A hybrid analog-digital differential analyser system, Proc. AFIPS 1963 Fall Joint Computer Conference, p. 277. 6084 <¢The purpose of this study was to explore in detail the practical aspects of hybrid differential analysers, and to verify experimentally the capabilities and limitations of a typical system. >>The major portion of the experimental work associated with this paper is devoted to the performance of hybrid integrators. Later sections will discuss the requirements of hybr,d elements for performing all of the above operations.>> WALTON W C & PRICKETT T.A : Hydrogeologic electric analog computers, ASCE Proc. Joupn. Hydrauhcs Division (USA), Vol. 89, 1963, n" HY 6, Part 1, November, pp. 67-91. 6085 WALTRIP D." Spotlight on the state of the art in operattonal amplifiers, Data Systems Engineering, (USA), vol. 18, 1963, July-August, pp. 33-47. 6086 WATANABE S, OSHIMA S. & ENOMOTO H : Analog transmission characteristics simulator using magnetic circuits for memory and arithmetic operation, The Journal of the

Institute o] Electrical Communication Engineers o[ Japan, 1963, n ° 6, p. 2. 6087 WEINSHELBAUM Albert : The use of a small, desk top anafugue computer in nuclear medicine education, Journal o[ Nucleal Medicine, 1964, January, p. 58. 6088 WEYGANDT C N and PWIE N.N. : Multivanable adaptive c.ontrol system, IEEE Ttans, on Applic and Ind., 1963, n" 66, May, pp. 89-94. 6089

<~A method of frequency resolution enhancement based on the use of networks with suitable amplitude and phase transfert functions followed by phase detectors was discussed, The characteristics of spectrum analysis, signal-to-nolse ratio improvement, conversion of time to space distributions, ;requency localization and amenability to switching elements and display devices were also presented. >> From DDC-Technical Abstract Bulletin, August 1, 1963

<¢A multivariable control system in which the parameters of the plant transfer function matrix are unknown ;unctuous of time is described. A scheme is presented in which the parameters of the plant transfer function are tracked and the controller transfer function matrix is adjusted in such a way as to keep the overall system optimized. The system may be realized in terms of ordinary analog computer elements. Information ~s given in a form which may be

VIEHWEG & JSHKE : Calculation of the instationary movement of particles in flowing gases or liquids using an electronic analogue computer, Chemische Technik, 1963, September, p. 536. 6081 WADE W.O., WAGNER L.F. & HAWKINS M.B. : The possible use of analog computers for the equivalent residual dose computation, Institute of Engineering Research, Universit of California, Berkeley, Report n ° CDRP-182-107, 1963, October 30, 6 pages. 6082

readily inserted into a controller for realization of a general type of adaptive control system.>> 681.142 : 621 389 : 621.317.39 McWILLIAM R & ADAMS A H : Analogue computer for study of breathing mechanics, Medical Electronics and Blot logical Engineering, Vol. 1, 1963, n" 3, August, pp. 353-361 (Annales, Vol. 6, 1964, n ° 2, avril, p. 137) 6090 <¢This report describes a simple analogue computer, developed rot the analysis of breathing mechanics. The complete

Chronique bibhographique apparatus co*lsists of 2 transducers (for pressure and flow), 6 operational amphfiers, 1 multxpher, 4 coefficient and 4 preset poteutlometers, an oscilloscope, counter unit and programme board. The computation is performed in real time on continuous variables, by a null method, using the oscilloscope to display the output The equipment is being applied to the study of airway obstruction m lung disease As well as the usual compliance and iesistance, a factor related to collapsabthty of the airways has been measured. The apparatus ~s easy to handle, gives results quickly, and is flexible enough to be used to explore reiatlouships between variables as well as to measure familiar quantities. )> WOKLEY C. - SHUMAKER J. : Computer for the Abel mversion, Rev. Sci. Instr., Vol. 34, 1963, May, pp. 551-557. 6091 <~An electromc analog-type computer is described which performs the Abel inversion on signal detected by a scanning photoelectric spectrometer. This computatmn is necessary to obtain the radial characteristics of an onhomogeneous light source from the observed ~( side-on)> measurements. The amplitudes resulting from a Fourier analysis of the photomultiplier signal are operated upon to produce an electrical signal corresponding to the source intensity at any desired radial distance. This signal can be continuously recorded as

215

ZWECK H . Modellversuche mit streifen Dalben m bindigen BSden bei plbtzhcher Belastung, Mitteilungsblalt dar Bundes. anstalt ]ur Wasserbau (Deutschland) Nr 19. 1963, Mai, S. ~-34/61 6098 1964 BUTTERFIELD R.O., BITNER E.D, SCHOLFIELD C.R. & DUTTON H.J : Analog computers and kinetics of hydrogeneration, ]omnal o[ American Od Chemist's Society, 1964, January, p. 29. 6099 McDONNELL J.A. :Simulation using perturbation methods, Instruments and Control Systems, Vol 37, 1964, n ° 2, February, pp. 127-128 6100 DUMEZ A.' Analogie hydrodynamique de l'&oulement de la chaleur, Revue g~n&'ale de The~mique, "Vol. 3, 1964, n" 27, mars, pp 277-289 6101 EDWARDS K.H.. A s*mple digital to analogue converter, ElectJonicEngineering, Vol. 36, 1964, n ° 433, March, pp 178-180. 6102 ~ The article describes a simple digital to a n a l o g convertm, designed to handle input data in serial form I t requires only four mterconnexlons with the source of information and has an overall accuracy better than +- I per cent. ~>

a function of wavelength. The optical system used for repet> tively presenting the intensity profile of the source to the computer at 100 cps is also described. ~>

FEHLBERG Erwm. Zur numerischen Integration yon Differentialgleichungen durch Potenzreihen-Ans~itze, dargestellt an Hand physlkalischei Belspiele, Zeitschrt# /iir angewandte Mathemattk und Mechanik, Band 44, 1964, I / e f t 3, Milrz,

WORTMAN Heinnch: Fernsprech-Verkehrs-Messgera~te mlt Analog-Digital-Wandlern, Tell II, Archiv [i2r Technisehes Messen und mdustrielle Messtechnik, 1963, November, S. 245 ; Tell III, Dezember, S. 269. 6092

S. 83-88 6103 FOOTE James E. : Minimum cost expediting w i t h a generalpurpose analog computer, IEEE Trans. on Indltstrial ElecIronies and Control Instrumentation, VoL IECI-11, 1964.

WORTZMAN D. : Analog-to-digital converter, IBM Technical Disclosure Bulletin, 1963, December, p. 48. 6093

n o 1, February, pp. 22-28. 6104 <~Several techniques generally referred to as critical path planning systems have been developed in recent years which aid project managers in the planning and control of projects. These techniques assume linear time cost functions for each task in the project and make use of the arrow diagram to define relationships betweer~ tasks.

WYETH W . A . : Analog computer simulation of ship propulsion systems, Engineering ]oulnal, 1963, February, p 27 6094 Brief description of the analogue computer and its use for simulation of a d,esel-electric system for ship propulsmn From Computer Abstracts, July 1963.

)) It can be shown that these systems are analogous to a mechamcal system of cylinders, springs, etc. T h i s mechanical

YAKUBOVICH A . M . : Continuous operation amplifiers with zero drift compensation by the method of Prinz, Automatron and Remote Control, Vol 24, 1963, n" 8, August, pp. 1016-1026. 6095 <~Two circuits fm zero drift compensation by the method

system can in turn be simulated on a general-purpose analog computer. The result is an analog model of the project which enables the input of time and cost estimates via potentmmeter settings and yields an optimum project tiraecost function with corresponding schedules. )>

of Pnnz are examined: one is connected in parellel, the other, proposed by the author, is connected in series Both circuits are analyzed and their operations compared. Recommandations for practical applications of these circuits are made. )~

HEARTZ Robert A.. Analog simulation techniques, I.E.E.E. Spectrum, Vol. 1, 1964, n" 3, March, pp. 221-230. 6105 <~Electronic simulation provides the engineer with a powerful analytical tool that makes it possible to test and evaluate proposed c~rcuitry in the conceptual stage.

Y U N G E . Y . : Analog computer simulation of an electrolytic tin line, ISA Transactions (USA), vol. 2, 1963, n° 3, July, pp. 266-272. 6096 <
))Analog computers are now proving to be as important to the electronic design engineer as they h a v e been for a long time to the control system engineer. T~me-expanston simulations are providing the electronics engineer with a powerful analytical tool for separating and evaluating the many variables of complex electronic systems. Time-cornpressrun simulations are aIso prowng to be a valuable design tool. The performance of a spacecraft electric power system is being simulated in compressed time so that 14.day mission occurs in less than five minutes. T h i s type of simulatmo quickly evaluates system degradation as a function of equipment performance drift or facture. T h e s e frequency-

681.142 ZORNER

KH,

: Observations on the scale-section convertor,

Z. Instrum. Kunde (Germany), Vol. 71, 1963, nO Ii, November, pp. 304-~07.

6097

216

Annales de l'Association internationale pour le Calcul analogique

s~aled models are of mute than academic interest ; teal and tangible reductnms m time and money costs a~ tommcmplace results. ~> HORNEY C.R. - An electronic analog, I.S.A. Journal, Vol. 11, 1964, n ° 2, February, pp. 61-68 6106 < KRISHNAMURTHY E.V ' A division algorithm for a digital differential analyzer, I,E.E.E. Trans. on Elechonlc Computers, Cmtespondence, Vol. EC-I3, 1964, n ° 1, February, pp. 54-55. 6108 KULISCH Ulrich: Ober dee Riickfuhrung i.lberstimmter Systeme yon partiellen Differentialgleichungen auf gewbhnliche D,fferentialgleichungen und dmen Behandlung mit einem elektroniscbe Analogrechner, Zeitschrift fur angew. Math. und Mech., Band 44, 1964, Heft 3, Marz, S 89-106. 6t09 <~A method is given to reduce overdetermined systems of partial differential equations resulting from a generalisation of the concept of ordinary differential equations in complex variables to systems of ordinary differential equations in real variables so that electronic analog computers may be used for their integration.>> K U N D U P & BANERGI S. : Transistorized non-linear function generator, Industrial Electton,cs, 1964, January, p. 35. 6110 <{A non-linear function is realized by the cascade connection of logarithmic, exponential and linear stages. The magnitude and sign of the exponent of the overall non-linear response functmn of the system may be set by adjustmg the gain and phase of the linear stage respectively, while the coefficient may be varied by varying the quiescent voltage across the emitter-base junction of the exponential stage, or by the current through it. The output then varies directly or inversely as the power o* root of the input having its magnitude according to the adjustment made. >> LAMB D . E . : Complex control system, Paper presented at .A.I.Ch.E Meeting, Memphis, £964, February 2-5. 6111 < LAND.AUER J. P a u l ' Simulation of Space vehicle with teact,on jet control system, Instruments and Control Systems, Vol. 37, I964, n o 2, February, pp. 130-134 6112 L A N G M A N ' A Steelmaker's appreciation of the analogue computer, Control, 1964, January. 6113

N " 3 - - ]uillet 1964

<~A genelal-purpose analogue ~omputer has been used in tile research laboratmies of United Steel. Some of the pro. jeers with wh,ch it has been associated are described in a context of compar,son with digital machines. )> MASON FI.L

Analog simulation of zone melting, InstJu. 6114

ments and Conhol Systems, 1964, January, p 121.

MELANSON Frank & LANNER Peter. Parameter optimi. zatton by hybrid techniques, InstJuments and Control Sys. terns, 1964, January, p 125. 6115 NIKIFORUK P.N. & TINKER E B. : Computer applications ,n chem,cal process control, Bpitish Chemical tug*nearing, 1964, January. 6116 <~The application of computers to the control of separate on-line chemical processes is rapidly becoming an established technique. Methods of extending and advancing this type of computer control must now be considered. The authors first discuss fundamental consideratmns such as the performance criterion, process characterist,cs and computer control system requirements, then briefly review conventional applications. The main concern is with developments expected in the neat future in on-line alarm detection, data logging and data processing, direct plant control, integrated plant control and optimizatton-d,,ect optimization, model techniques and self-optizimation through learning.>> NOVOSELTZEVA Zh. A. : Analog computation of controlled time delay usmg typical computing elements, Automation and Remote Control, 1964, January, p 91. 6117 PARKER W.A. & PRADOS J W : Development of an ethylene glycol production system by analog computer simulation, Paper plesented at A.I.Ch.E. Meeting, Memphis, 1964, February 2-5 6118 <(Process design of an ethylene glycol production system consisting of a continuous stirred tank reactor, temperature control system, and reactor level-feed compositiort control system was carried out with an analog computer. A dynamic simulation was conducted which permitted selection of su,table control act,ons and settings for temperature, reactor ievel, and feed composition control systems. ~> PEARMAN C.R. & POPODI AE. : How to design high-speed D-A Converters, Electronics, Vol 37, 1964, n ° 8, February 21, pp. 28-32 6119 <~Comparison of both weighted-resistor and ladder types of decoder networks, with analysis and design of a so-bit ladder network decoder, including factors that affect accuracy and speed. >> PLATT George : Converting process equations for analog cornputer control, Control Engineering, Vol. 11, 1964, n ° 2, February, pp. 65-68. 6120 <( One key problem in matching an analog control cornpurer to a process *s setting up process equations in analog form with appropriate scaling factms. Here is an easy to follow step-by-step procedure which always works. ~> 621.38 de QUERVAIN A. : Les syst&mes d'dl~ments de construction de l'61ectronique et lent utilisation industrielle, Bulletin de la Soc,~t~ ~oyale belge des Electrlclens, Tome 80, 1964, n o 1, pp 1-1~. 6121 ROOTS W.K. & NIGHTINGALE J.M. : Two-position discontinuous temperature control in electric space heating and cooling processes, I - The control system, IBEE Transactions on Apphcations and Industry, 1964, January. 6122

Chronique bibliographique <~The simplest forms of 2-position discontinuous temperature control systems for the electric space heating-cooling process are described. Simple and complex forms of the controlled process are represented by block diagrams. It is shown that secondary feedback can compensate for a control element's nonlinearities. The secondary feedback conditions for optimum compensation, and the effects of overcompensation, are discussed. An actuating signal equation is derived which represents the control system. Description is given of a new technique for ptedicting the behavior of a proposed control system by displaying the actuating signal equation in three dimensions The need for overriding commands is outlined, and their introduction into the system via the primary feedback loop is explained. A new overriding cornmand system, for room-vacancy and nlght-shutdown events, is introduced. Description is given of a new analog for the discontinuously controlled electric space heating-cooling process. The analog is simple to handle, but represents the process with a degree of accuracy sufficient for research and development purposes. From the analog, a control equation fo the discontinuously controlled process is formulated. Mention is made of the desirability of basing the reference input on information other than the command. ~ SHEENAN Christopher J. : An analog simulation of the restricted three-body problem by automatic scale-changing techniques, I,E.E.E. Trans. on Electponic Computers, Vnl. EC-13, 1964, n ° 1, February, pp. 41-50. 6123 <~This paper desciibes a method for solving, on a standard analog computei, problems with wide dynamic ranges. Specifically treated is the iestlicted three-body problem, numerous examples of which are presented, as well as cornpalisons to digital results. ~ Some attendant problems are discussed. Limited dynamic range, capacitor dielectric absorption, and electronic multiplier limitations are described in some detail. Automat,c scale changing techniques are detailed, which produce the high accuracy shown, as well as providing near-optimum scaling at all times. )> SHUMAKER J.B., Jr. & YOKLAE~" C.R. : The use of an analog computer in side-on arc spectroscopy, Applied Optics, 1964, January, p. 83. 6124

217

621.3t6.933;621.3.001.57 STEPHANIDES H. : Lbsung yon Obe~spannungsschutzpmblemen dulch Anlagemodelle, Bulletin de l'Assoeta#on suisse des Electriciens, Vol. 55, 1964, n" 6, 21 mars, pp. 256-260. 6125 <~L'examen des conditions du probl~me de la protection contre les surtensions montre qu'une reproductlon duns le module analoglque des installations offre de bonnes possibilit& de solution. Pour 6viter des interpolations, il faut que les r6seaux r6currents qui reproduisent les lignes et les Obles soient tr~s 6troitement 6chelonn~s II lmporte 6galement d'utiliser une forme d'onde exactement d6finie et reproductible, ainsi qu'une bonne reproduction des parafoudres. L'auteur d4ciit un module analogique qui satisfait ~t ces exigeances et permet la mesure exacte de toutes les surtensions. Ce module fonctionne avec une courbe de tension qui augmente lin&irement Des oscillogiammes montrent la bonne pr6cision de mesure du module ~> WIEDER H.H. : Squale-root computer uses Hall multiplier, ElectJonics,Vol. 37, 1964, n ° 4, January 24, pp. 30-31. 6126 <~Simple analog device is the main component in a system designed to yield the square root of the sum of the squares of three vauabies that have been tianslated into electric cmrents.~ WIEDER H.H. : Square-root computer,

Electronics, 1964,

Jaouaiy 24, p. 30. 6127 YANACH K. : Solution of probability problems by means of .'malog computation, Automat,on and Remote Control, 196~, January, p. 83 (in Russian). 6128 ZOSS L./vL & WAGNER C A :

Pneumatically simulating

control, I.S.A. ]omnalj Vol. 11, 1964, n ° 2, February, pp. 61-65. 6129 ({ Automatic control can be efficiently studical when analogs of systems and controls are available for demonstrations and laboratory use, thereby allowing processes, controls, and upsets to be easily simulated and recorded. The equipment shown duplicates all commercially available control modes, and is built from standard components. It consists of three units, process, test, and controller. )>