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Technology of columbium (niobium)
BOOK NOTES TECHNOLOGY OF COLUMBIUM (NIOBIUM), edited by B. W. Gonser and E. M. Sherwood. 120 pages, illustrations, 8½ X 11 in. New York, John Wiley & Sons, Inc.; London, Chapman & Hall, Limited; 1958. Price, $7.00. A monograph of seventeen papers presented at a symposium on columbium (niobium) by the Electrochemical Society, held in Washington, D. C., May 12-15, 1957. The sources, economic aspects, and physical properties of columbium are covered in the first three papers. Three papers deal with the extraction and preparation of the pure metal and two with analytic techniques. Oxidation and mechanical properties are the subjects of three papers each. The remaining topics covered are the use of columbium in reactors, electroplated metals on columbium, and vacuum reactions during sintering. The choice of material is good, and the subject is timely. The text is well illustrated and referenced. HANDBOOK OF AUTOMATION, COMPUTATION AND CONTROL. VOLUME I, CONTROLFUNDAMENTALS,edited by Eugene M. Grabbe, Simon Ramo and Dean E. Wooldridge, v.p., diagrams, 6 X 9 in. New York. John Wiley & Sons, Inc., 1958. Price, $17.00. This three-volume handbook has been prepared to bring order out of the chaos of existing literature on the general subject of automation and control. It is meant to give technologists a unified work upon which they may depend for many years. If the succeeding volumes meet the standard set by this first one, the aim will be fulfilled. The editors, recognized experts themselves, have solicited the help of 104 specialists in preparing the handbook. The result is a thoroughly competent and useful work. Volume 1, on Control Fundamentals, covers five main topics: General Mathematics (including conformal mapping, probability, statistics, etc.); Numerical Analysis; 536
Operations Research; Information Theory and Transmission; and Feedback Control (including sampled-data systems, nonlinear systems, etc.). The five main sections are further subdivided into twenty-six chapters (paged separately), each covering one phase of the subject and each having a list of references. A detailed table of contents makes it easy to locate information on the 177 sections comprising the subdivisions of the chapters. In contrast to most handbooks, this one is printed on good paper, in type large enough to be read with ease. MODERN CHEMICAL PROCESSES, VOLUME 5. 154 pages, illustrations, 8 X 11½ in. New York, Reinhold Publishing Corp., 1958. Price, $5.00. This is the fifth volume in a series of reprinted articles which contains fourteen recently developed chemical processes, all now in operation. INTRODUCTION TO THE DESIGN OF SERVOMECHANISMS, by John L. Bower and Peter M. Schultheiss. 510 pages, diagrams, 6 X 9 in. New York, John Wiley & Sons, Inc., 1958. Price, $13.00. This book deals with topics covered in the servomechanisms program at Yale University during the past ten years. The mathematical level throughout is that oI the undergraduate course. No previous background is assumed aside from a knowledge of linear circuit theory and some understanding of linear differential equations. The authors provide a systematic approach to design, dealing with the principal performance requirements, such as harmonic response, time response, error coefficients and noise response and giving attention to the common aspects of non-linear operation. A self contained volume including an appendix covering servomechanism components, enables the reader to follow examples used in the text and to work representative problems without resorting to outside references.
Operations Research; Information Theory and Transmission; and Feedback Control (including sampled-data systems, nonlinear systems, etc.). The five main sections are further subdivided into twenty-six chapters (paged separately), each covering one phase of the subject and each having a list of references. A detailed table of contents makes it easy to locate information on the 177 sections comprising the subdivisions of the chapters. In contrast to most handbooks, this one is printed on good paper, in type large enough to be read with ease. MODERN CHEMICAL PROCESSES, VOLUME 5. 154 pages, illustrations, 8 X 11½ in. New York, Reinhold Publishing Corp., 1958. Price, $5.00. This is the fifth volume in a series of reprinted articles which contains fourteen recently developed chemical processes, all now in operation. INTRODUCTION TO THE DESIGN OF SERVOMECHANISMS, by John L. Bower and Peter M. Schultheiss. 510 pages, diagrams, 6 X 9 in. New York, John Wiley & Sons, Inc., 1958. Price, $13.00. This book deals with topics covered in the servomechanisms program at Yale University during the past ten years. The mathematical level throughout is that oI the undergraduate course. No previous background is assumed aside from a knowledge of linear circuit theory and some understanding of linear differential equations. The authors provide a systematic approach to design, dealing with the principal performance requirements, such as harmonic response, time response, error coefficients and noise response and giving attention to the common aspects of non-linear operation. A self contained volume including an appendix covering servomechanism components, enables the reader to follow examples used in the text and to work representative problems without resorting to outside references.