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This standard defines technical requirements, performance metrics, evaluation criteria and test cases for knowledge graphs. The mandatory test cases include data input, metadata, data extraction, data fusion, data storage and retrieval, inference and analysis, and knowledge graph display.

定价： 79元 / 折扣价： 68 元

This standard is intended to provide a standard framework for evaluating the quality of digital humans that look and act like actual humans. The quality of digital humans is related to the human factor for immersive content service that defines metrics for evaluating the realism of digital humans. The evaluation needs to define a framework that handles the digital human content as test data, define test methods and test cases, and provide a evaluation report of the test results. Therefore, the… read more framework for evaluating the quality of digital humans includes the following: - A set of cognitive-psychological factors that define how users feel the realism of digital humans. - Definitions on methods and metadata that describe the tests for the quality of digital humans. - A procedure that allows the quality evaluation of digital humans. read less

定价： 76元 / 折扣价： 65 元

定价： 149元 / 折扣价： 127 元

This guide describes methods to evaluate and test the electrical performance of energy saving devices (ESDs). It describes measurement methods that focus on monitoring the power consumed or generated by the observed load or generator without the ESD connected into the circuit and with the ESD connected and energized into the circuit. Detailed protocols describe step-by-step the testing circuits, the type and accuracy of evaluation instrumentation, and the order of the test measurements. Special… read more emphasis is given to sources of measurement errors due to incorrect connection of instrumentation, inadequate instrumentation, or incorrect interpretation of results. Annex B contains practical examples and explains the physical mechanisms of phenomena that may cause errors. This guide applies to any electrically connected ESD controlling electrical power delivered from a source and powering an electrical load. While an independent, certified testing laboratory might be contracted to perform ESD testing, the intent of this standard is to provide guidance to those involved with ESDs wishing to obtain accurate and objective data to aid in evaluating ESD performance. read less

定价： 66元 / 折扣价： 57 元

The guide provides data in current-temperature and tabulation form for use in evaluating the effect of solar radiation on outdoor switchgear. The guide applies to switchgear as defined by IEEE Std C37.20.1, IEEE Std C37.20.2, IEEE Std C37.20.3 and IEEE Std C37.20.9; control switchboards as defined by IEEE Std C37.21; metal-enclosed bus as defined by IEEE Std C37.23; medium-voltage ac controllers as defined by UL 347; motor control centers as defined by UL 845; switchboards as defined by UL 891;… read more and medium-voltage air-insulated circuit breakers for outdoor application defined by IEEE Std C37.04. read less

定价： 56元 / 折扣价： 48 元

This recommended practice describes how to evaluate the reliability of existing industrial and commercial power systems. It is likely to be of greatest value to the power-oriented engineer with limited experience in the area of reliability. It can also be an aid to all engineers responsible for the design of industrial and commercial power systems. It contains recommendations for assessing power system conditions and assembling the data required for full reliability calculations for large or critical facilities as well as recommendations for inspection, maintenance, and engineering activities that will benefit smaller or less critical facilities.

定价： 56元 / 折扣价： 48 元

定价： 113元 / 折扣价： 97 元

The group will develop a recommended practice for evaluating technical and economic compatibility. The scope of the compatibility is industrial and commercial electronic process equipment, facility electrical network, and electric utility feed to the facility.

定价： 151元 / 折扣价： 129 元

定价： 149元 / 折扣价： 127 元

Scope. This guide is based on the knowledge and experience of manufacturers, researchers, and end users of nonceramic insulating products that are electrically stressed in outdoor environments. The guide discusses the characteristics of nonceramic materials that are needed for long-term reliability in these applications. The guide makes recommendations for principles of evaluation and tests used in the screening and selection of materials. The judicious use of this guide will significantly… read more improve the probability of success in the applications selected. However, it should be recognized that the application on nonceramics to outdoor electrical insulation is an extremely demanding and complex problem. In any specific application, judgment and experience is required to analyze and balance the many tests and characteristics which are discussed to obtain satisfactory performance and reliability. Since the primary objective of accelerated aging is the prediction of material performance prior to its application and the development of an actual service history, accelerated aging tests should, within a short time, attempt to duplicate the effects of long-term exposure in the field. Extreme reductions in the time to failure are accomplished by increasing the intensity of one or more of the destructive forces of normal operation. For example, increased electrical stress, higher temperature, water immersion, or intense ultraviolet rays, are often used. The acceleration in the time base depends on the type of accelerated aging performed and can vary from a factor of 10 to 350 (1000 h vs 40 yr). read less

定价： 53元 / 折扣价： 46 元

This recommended practice explores commercial, institutional, and industrial design of electrical services, interconnecting with a utility distribution or transmission system. Close coordination between the facility electrical designer and the serving utility are critical for a successful service connection. This recommended practice considers the electrical system information needed by the designer concerning the utility's system characteristics and the electrical load information needed by… read more the utility to design a satisfactory electrical interface between the serving utility and the premise electrical distribution system. It describes various ways to take power from the serving utility. It also covers the specific requirements for utility metering on service entrance equipment, as well as service equipment rooms, vaults, and pads. read less

定价： 104元 / 折扣价： 89 元

The general information in this guide is intended to assist in evaluating the effect of solar radiation on outdoor metal-enclosed switchgear, and is, for example, applicable to outdoor metal-enclosed circuit breaker power switchgear, metal-clad switchgear, metal-enclosed interrupter switchgear, metal-enclosed gas insulated switchgear, control switchboards, metal-enclosed bus, and pad-mounted switchgear. Specific data are given in current-temperature relationship, and tabulation form for its… read more application to outdoor metal-enclosed low-voltage power circuit breaker switchgear, outdoor metal-clad switchgear, and outdoor metal-enclosed interrupter switchgear. read less

定价： 56元 / 折扣价： 48 元