a-weighted reading
31Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… …
32Molecular Hamiltonian — In atomic, molecular, and optical physics as well as in quantum chemistry, molecular Hamiltonian is the name given to the Hamiltonian representing the energy of the electrons and nuclei in a molecule. This Hermitian operator and the associated… …
33artificial intelligence — the capacity of a computer to perform operations analogous to learning and decision making in humans, as by an expert system, a program for CAD or CAM, or a program for the perception and recognition of shapes in computer vision systems. Abbr.:… …
34Modified Dietz Method — The Modified Dietz Method is a calculation used to determine an approximation of the performance of an investment portfolio based on money weighted cash flow.[1] A more precise way of calculating performance in the presence of external cash flows …
35Smart grid — Public infrastructure …
36Emmett Till — in a photograph taken by his mother on Christmas Day 1954, about six months before his murder. Scholars state that when the photo ran in the Jackson Daily News Emmett Till and his mother were given a profound pathos in the fl …
37Kurzweil K250 — The Kurzweil K250 a.k.a. Kurzweil 250 , K250 or K 250 , manufactured by Kurzweil Music Systems was the first combined live performance and studio electronic musical instrument which produced sound derived from sampled sounds (see:Sampler (musical …
38Linear regression — Example of simple linear regression, which has one independent variable In statistics, linear regression is an approach to modeling the relationship between a scalar variable y and one or more explanatory variables denoted X. The case of one… …
39Travelling salesman problem — The travelling salesman problem (TSP) is an NP hard problem in combinatorial optimization studied in operations research and theoretical computer science. Given a list of cities and their pairwise distances, the task is to find a shortest… …
40Constraint satisfaction problem — Constraint satisfaction problems (CSP)s are mathematical problems defined as a set of objects whose state must satisfy a number of constraints or limitations. CSPs represent the entities in a problem as a homogeneous collection of finite… …
