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Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...
The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.
The blue wall of silence, [1] also blue code [2] and blue shield, [3] are terms used to denote the informal code of silence among police officers in the United States not to report on a colleague 's errors, misconducts, or crimes, especially as related to police brutality in the United States. [4] If questioned about an incident of alleged ...
Extended real number line. In mathematics, the extended real number system [a] is obtained from the real number system by adding two infinity elements: and [b] where the infinities are treated as actual numbers. It is useful in describing the algebra on infinities and the various limiting behaviors in calculus and mathematical analysis ...
The Colt Police Positive is a small- frame, double-action revolver featuring a six- round cylinder, chambered for either .32 or .38 caliber. A .22 caliber model was also offered. Designed primarily for sale to federal, state, or local law enforcement agencies, the Police Positive was introduced into the firearms market by Colt's Manufacturing ...
Taking the medical example from above (20 true positives, 10 false negatives, and 2030 total patients), the positive pre-test probability is calculated as: Pretest probability = (20 + 10) / 2030 = 0.0148
The number 0 can be regarded as neither positive nor negative or, alternatively, both positive and negative and is usually displayed as the central number in a number line. Zero is even [73] (that is, a multiple of 2), and is also an integer multiple of any other integer, rational, or real number.
In advanced mathematics, the number line is usually called the real line or real number line, and is a geometric line isomorphic to the set of real numbers, with which it is often conflated; both the real numbers and the real line are commonly denoted R or . The real line is a one- dimensional real coordinate space, so is sometimes denoted R1 ...