The field of electrical engineering is very innovative-new products and new ideas are continu ally being developed. Yet all these innovations are based on the fundamental principles of electrical engineering: Ohm's law, Kirchhoff's laws, feedback control, waveforms, capacitance, resistance, inductance, electricity, magnetism, current, voltage, power, energy. It is these basic fundamentals which are tested for in the Professional Engineering Examination (PE Exam). This text provides an organized review of the basic electrical engineering fundamentals. It is an outgrowth of an electrical engineering refresher course taught by the author to candidates preparing for the Professional Engineering Examination-a course which has enabled scores of electrical engineers in Minnesota and Wisconsin to successfully pass the PE Exam. The material is representative of the type of questions appearing in the PE Exams prepared by the National Council of Engineering Examiners (NCEE) over the past twelve years. Each problem in the text has been carefully selected to illustrate a specific concept. Included with each problem is at least one solution. Although the solutions have been carefully checked, both by the author and by students, there may be differences of interpretation. Also, in some cases certain assumptions may need to be made prior to problem solution, and since these to individual, the final answer may also differ. The assumptions will vary from individual author has attempted to keep the requirements for assumptions and interpretation to a mini mum.
The acronym VAN refers to Drs Varotsos, Alexopoulos and Nomicos, members of a group based in the University of Athens and led by Professor Varotsos (head of the Physics Department) which for over a decade has sought to use electric-field measurements between electrodes buried in the earth to predict earthquakes in Greece over periods of order one month or less. But is such “short-term” prediction achievable by the VAN approach (or by any other)? This book is an objective collection of the arguments for — and the counterarguments against — that approach, intended to help scientific readers arrive at their own answers to this important question, as well as to others (including that of VAN's “export” potential). Contents:What is VAN?:Introduction to the VAN Method of Earthquake Prediction (S Uyeda)Short Term Earthquake Prediction in Greece by Seismic Electrical Signals (P Varotsos et al.)The Telemetric System of VAN Group (K Nomicos)Possible SES Mechanisms:Physical Mechanisms for Generation and Propagation of Seismic Electrical Signals (D Lazarus)Laboratory Investigation of the Electrical Signals Preceding Earthquakes (V Hadjicontis & C Mavromatou)On Electrotelluric Signals (P Bernard & J L LeMouël)Counterarguments Against the VAN Approach:VAN: A Critical Evaluation (R J Geller)Foreshocks Preceding VAN Signals (SES) (K Sudo)Brief Summary of Some Reasons Why the VAN Hypothesis for Predicting Earthquakes has to be Rejected (M Wyss)Arguments in Favour of the VAN Approach:Some Observations about the Statistical Significance and Physical Mechanisms of the VAN Method of Earthquake Prediction, Greece (S K Park et al.)Re-Examination of Statistical Evaluation of the SES Prediction in Greece (K Hamada)Anomalous Changes in Geoelectric Potential Preceding Four Earthquakes in Japan (T Nagao et al.)Some Related Experimental Programmes:Behaviour of the Electric Potential During the Activity of Aftershocks of the M7.2 Earthquake, Japan (Y Honkura et al.)Implementation of VAN Technique in Guatemala (O Kulhánek)Reactions to the Review Meeting:A Seismologist's View of VAN (H Kanamori)Some Personal Conclusions from the Meeting (C W A Browitt)A Brief Look Back at the Review Meeting's Proceedings (J Lighthill)Non-Seismological Fields in Earthquake Prediction Research (V I Keilis-Borok)and other papers by distinguished authors Readership: Geophysicists and earth scientists. keywords:VAN;Varotsos;Alexopoulos;Nomicos;Earthquakes;SES