Automated conversion of engineering drawings to CAD form

Article Abstract:

Although there are many advantages to having engineering drawings in electronic CAD format, such as easier modification, and faster copy and retrieve, most drawings are still in hard copy format only. According to most cost-benefit analyses, drawings that will require several modifications are best converted to an electronic format. The GTX 5000 from GTX Corp is a CAD conversion system that offers scanning, vectorization, text recognition, symbol recognition, context processing and cleanup editing subsystems. The system's approaches to isolated character classification include feature-space recognition using multiple decision trees supplemented by the neural network technique. The Electric Power Research Institute's (EPRI) funding for research in neural networks for character and symbol recognition, text/symbol associativity, and touching and broken character processing is also discussed.

Engineering services, Pattern recognition (Computers), Product information, Design and construction, Computer aided design, Graphics software, Computer science, Technical, Software Design, Pattern Recognition, Computer-Aided Design, Character Recognition, Symbols, Vector Graphics, GTX Corp., GTX 5000 (Computer graphics software)

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Scanning the issue: knowledge-based systems in electric power systems

Article Abstract:

Expert systems and knowledge-based systems help solve power system problems, particularly when applied to abnormal operating situations. Load demands are increasing in many power systems, with under-development in the existing generation and transmission facilities. Expert systems can emulate problem-solving by humans and apply qualitative, nontrivial and high-quality knowledge for a difficult problem. Software-based expert systems contain a knowledge base, database and inference engine. More advanced systems may include knowledge acquisition, language interface and algorithm interface. Expert systems automate human decision-making, apply new artificial intelligence (AI) techniques and use knowledge bases to store human knowledge.

Prepackaged software, Artificial intelligence, Expert systems, Problem solving, Knowledge-based systems, Computer simulation, Knowledge-Based System, Computer-Generated Environments

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Engineering -- Economic Analysis of Electric Power Systems

Article Abstract:

The basic economic principle is to provide electrical services to the society with maximum benefits. Rates should reflect the marginal cost of supply. Economic efficiency criteria should be satisfied. Economic analysis of electrical power systems is described. Advances and developments occurring in power systems are discussed. Optimal reliability levels are graphed.

Economics, Investments, Mathematical models, Macroeconomics, Reliability (Trustworthiness), Modeling, Data modeling software, Cost, Reliability, Optimization, Analysis, Policy, Performance, Tariff, Theory, Losses

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