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Includes Part 1, Number 2: Books and Pamphlets, Including Serials and Contributions to Periodicals July - December)

Digital computers have been used more and more to control different industrial processes during the last decade. As of today, many sy stems are designed to include a process control computer as a vital part. The use of computers has created a need for sophisticated me thods for the operation and supervision of complex industrial proces ses. To summarize the state of the art from the practical as well as from the theoretical point of view, the 4th IFAC/IFIP International Conference on "Digital Computer Applications to Process Control" will be held at Zurich from March 19 to 22, 1974. The first two vo lumes of the proceedings contain the accepted papers submitted to the conference mentioned above. The papers are arranged according to the topics of the conference. A third volume will include the six follow ing survey papers: 1. Digital Control Algorithms Prof. A. P. Sage, Dallas Texas / USA 2. Interface Problems for Process Control Prof. T. J. Williams, Lafayette Indiana / USA 3. Software for Process Computers Dr. J. Gertler, Budapest / Hungary Dr. J. Sedlak, Prague / CSSR 4. Digital Computer Applications in Metallurgical Processes Mr. W. E. Miller, Salem / USA Mr. W. G. Wright, Schenectady / USA 5. Digital Computer Applications in Power Systems Mr. D. Ernst, Erlangen / FRG 6. Digital Computer Applications in Chemical and Oil Industries Dr. H. Amrehn, Marl / FRG We hope, that the publication of these papers from specialists.

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Ruby is a high-level, fully object-oriented programming (OOP) language. It is very powerful and relatively easy to learn, read, and maintain. Sams Teach Yourself Ruby in 21 Days provides the best introduction to this language and addresses one of the key constraints it faces: "The paucity of quality English-language documentation is one of the few things holding Ruby back from widespread adoption," according to Dr. Curtis Clifton of Iowa State University¿s Department of Graduate Computer Science.

Parris Electoral Conjectures and Governance in Guyana examines the inappropriateness of treating Guyana as a society characterised by ethnic differences. Author Haslyn Parris, the former Deputy Prime Minister of Guyana, outlines his thoughts on the electoral system in Guyana and the ways in which it is used as a basis for determining societal opinion on who should govern the country. Parris Electoral Conjectures and Governance in Guyana explores three main myths that comprise beliefs generally accepted by many Guyanese, regardless of their levels of intelligence or education. These myths are as follows: 1. Guyana has a Westminster-model constitution and system of government. 2. Voting in Guyana is along ethnic lines, so that elections very much represent something of an ethnic census. 3. Leaders need to be intellectually blessed visionaries, thereby capable of giving guidance to the people on a broad range of issues. Parriss study is divided into two parts; the first part examines the second and third myths as described above. The second part explores the first myth, regarding Guyanas system of government and proposes a new electoral system for Guyana. Throughout, Parris offers insightful suggestions regarding how Guyana can escape the morass into which the country has been thrown by its colonial history.