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Power Measurement Fundamentals
Published in Dale R. Patrick, Stephen W. Fardo, Brian W. Fardo, Electrical Power Systems Technology, 2021
Dale R. Patrick, Stephen W. Fardo, Brian W. Fardo
The English system of units, which uses units such as the inch, foot, and pound, has been used in the United States for many years. However, many other countries use the metric system, which has units such as kilometers, centimeters, and grams. The metric system is also called the international system of units and is abbreviated as SI. Although the English and SI systems of measurement have direct numerical relationships, it is difficult for individuals to change from one to the other. People form habits of using either the English or the SI system.
Math Review
Published in W. David Yates, Safety Professional’s Reference and Study Guide, 2020
During the course of your professional career, you will encounter the use of engineering notation. Engineering notation is a version of scientific notation in which the power of 10 must be a multiple of three. For example, 106 can be written as 1,0002. Instead of writing powers of 10, the International System of Units (SI) uses prefixes to describe numbers. An example of this is 10−1 or 0.01, which is described as deci in the SI system. By way of example, 0.01 (or 10−1) L of a substance is described as a deciliter or dL.Table 3.1 describes the most often encountered engineering notation terms in the safety and health profession.
Fundamental Concepts and Quantities
Published in Shaheen A. Dewji, Nolan E. Hertel, Advanced Radiation Protection Dosimetry, 2019
The modern metric system of measurement is the International System of Units (SI). The International Bureau of Weights and Measures (BIPM) was established in 1875 with the task of ensuring the unification of measurements via the fundamental standards and scales used for the measurement of the principal physical quantities, as well as to maintain international prototypes. The BIPM publishes an SI brochure (Bureau International des Poids et Mesures (BIPM) 2006) that describes and defines the various quantities and units used in the SI. The National Institute of Standards and Technology (NIST) is tasked with implementing the SI system in the United States, and NIST Special Publication (SP) 330 (Taylor and Thompson 2008) is the U.S. version of the BIPM SI brochure.
A disaggregated freight transport market model based on agents and fuzzy logic
Published in Transportmetrica B: Transport Dynamics, 2019
The environment recreates the conditions and characteristics of the context in which the agents operate. In the case of a freight transport system, the environment refers to the physical properties of the goods (such as size, weight or volume), the technological properties of the vehicles (such as capacity or speed) and the geographical characteristics of the region in question (e.g. distance). The units of measurement implemented in the model follow the metric system as defined by The International System of Units.