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The original study that proposed the GHQ was published in 1970 by David Goldberg and Dr. Blackwell. [9] This study was originally completed to validate the General Health Questionnaire as a reliable determinant of psychiatric health in general practice. [9] [10] [11] The GHQ was given to 3000 patients at a general medicine practice in London. [9]
General Health Questionnaire or Goldberg Health Questionnaire [6] (GHQ) developed in 1972 in its initial format as a 60-question test (GHQ-60) with a four-point scale for each question. It is used to measure the risk of developing psychiatric disorders. Other forms of GHQ are: GHQ-30, GHQ-28 and GHQ-12. [7]
A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
After the 1970s, vacuum switches began to replace the minimal-oil switches in medium-voltage switchgear. In the early 1980s, SF6 switches and breakers were also gradually replaced by vacuum technology in medium-voltage application. As of 2018, a vacuum circuit-breaker had reached 145 kV with a short-circuit rating of 200 kA. [4]
Selectivity, also known as circuit breaker discrimination, is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network.
GHQ India - General Headquarters, India, in British India; United States Army Air Corps (previously known as General Headquarters Air Force) FM HD3 channels of WUFT-FM; GHQ (company), which produces 1:285 scale micro armor for miniature wargaming; GHQ (game), a board game designed by Kurt Vonnegut in the 1950s and published in 2024
The Circuit Breaker is a design pattern commonly used in software development to improve system resilience and fault tolerance. Circuit breaker pattern can prevent cascading failures particularly in distributed systems. [1] In distributed systems, the Circuit Breaker pattern can be used to monitor service health and can detect failures dynamically.
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