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Scram (other)
Scram (or SCRAM) is an emergency shutdown of a nuclear reactor or a complex operation. Scram or SCRAM may also refer to: Arts, entertainment, and media * ''Scram'' (video game), a 1981 Atari 8-bit family game based around shutdown of a nuclear reactor * Scram Cricket, a variation of the darts game Cricket * ''Scram!'', a 1932 Laurel and Hardy short film People * Scram Jones (born 1977), producer, DJ and emcee Technology * SCRAM bracelet, an ankle bracelet for Secure Continuous Remote Alcohol Monitoring * Salted Challenge Response Authentication Mechanism (or SCRAM), a computer security mechanism used with the Simple Authentication and Security Layer * Scram cannon, a hypothetical kinetic energy weapon based on ram accelerator technology * Scramjet, the flow of and combustion of the fuel/air mixture through the engine at supersonic speeds * Static column RAM (or SCRAM), a type of computer memory See also *Scrum (other) Scrum may refer to: Sport * Scrum (rugby) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scram
A scram or SCRAM is an emergency shutdown of a nuclear reactor effected by immediately terminating the fission reaction. It is also the name that is given to the manually operated kill switch that initiates the shutdown. In commercial reactor operations, this type of shutdown is often referred to as a "scram" at boiling water reactors (BWR), a "reactor ''trip''" at pressurized water reactors and at a CANDU reactor. In many cases, a scram is part of the routine shutdown procedure, which serves to test the emergency shutdown system. The etymology of the term is a matter of debate. United States Nuclear Regulatory Commission historian Tom Wellock notes that ''scram'' is English-language slang for leaving quickly and urgently, and cites this as the original and most likely accurate basis for the use of ''scram'' in the technical context. A persistent alternative explanation posits that ''scram'' is an acronym for "safety control rod axe man", which was supposedly coined by Enrico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scram (video Game)
''Scram: A Nuclear Power Plant Simulation'' is an Atari 8-bit family game written by Chris Crawford and published by Atari, Inc. in 1981. Written in Atari BASIC, ''Scram'' uses differential equations to simulate nuclear reactor behavior. The player controls the valves and switches of the reactor directly with the joystick. This game's title, "SCRAM", is taken from the term for an emergency shutdown of a nuclear reactor. It refers to immediately inserting all control rods into the reactor core to stop the reaction process. The game also recreates the Three Mile Island Unit 2 nuclear reactor and allowed players to recreate the events that took place there in 1979. Gameplay The game display shows a schematic-like representation of a light water reactor, typical of nuclear reactors in use in the United States at that time. The reactor core is on the left of the screen, with the primary coolant loop to its immediate right. Further right is the secondary cooling loop, and finally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cricket (darts)
Cricket is a darts game that uses the standard 20 number dartboard with the triple and double rings. Gameplay Cricket is typically played between 2, 3 or 4 players, or teams of players, although the rules do not discount more players. The goal of cricket is to be the first player to open or close all the cricket numbers and have a higher or even point total. Cricket numbers Cricket uses the numbers 15 to 20 (or sometimes 10 to 20, and less frequently a predetermined selection of numbers) and the bull's-eye. To open or close a number, it must have been scored three times in any fashion, on one or more turns. Hitting the triple can open or close a number in one throw; a single and the double can open or close it in two throws or three singles can open or close it in three throws. Except in strict variants which count down from 20 to 15, numbers do not have to be opened or closed in any particular order and several numbers can be hit in the same turn. A scoreboard is used to keep tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scram!
''Scram!'' is a 1932 pre-Code Laurel and Hardy film produced by Hal Roach, directed by Ray McCarey, and distributed by Metro-Goldwyn-Mayer. Plot The story begins in a courtroom, where Stan and Ollie appear before Judge Beaumont on a charge of vagrancy. The duo quickly anger the judge, who can't remand them in custody for 180 days as he would normally do because the jail is full; and so instead gives them "One hour... to get out of town! And never let me set eyes on you again..." — dismissing the case by snarling "Scram! Or I'll build a jail for you!" Later, as Stan and Ollie are walking down the sidewalk in a heavy rainstorm, they meet a well-dressed, highly intoxicated man and help retrieve his car key, which he has dropped down a grating, and in return he invites the homeless pair to stay at his mansion. Once they arrive at the residence, the congenial drunk cannot find his house key, but the boys finally get into the house, where they startle a young woman, causing her t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scram Jones
Marc Shemer, (born November 5, 1977), better known by his stage name Scram Jones, is a producer, DJ and rapper from New Rochelle, New York. He has produced music for Raekwon, Ghostface Killah, Styles P, Tragedy Khadafi, Jadakiss, Saigon, Dipset and Troy Ave. He has been featured in The Source magazine's "Unsigned Hype" column. Scram Jones is jewish. Career Working as a DJ After teaching himself how to scratch, mix, and blend, Scram Jones won second place in the 2003 East Coast Finals of Guitar Center's DJ Battles. Scram then went on to receive three consecutive nominations for Best Mixtape Producer at the respected ''Justo'' Mixtape Awards. He also hosted his own weekly radio show called "The Chop Shop" for 4 years on the WICB radio station in New York. Scram has since been DJing for Raekwon of Wu-Tang Clan, Kool G Rap, N.O.R.E., and Saigon. He has also performed in various clubs around the world and in New York. Working as a record producer Scram's first break as a producer c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SCRAM Bracelet
Electronic tagging is a form of surveillance that uses an electronic device affixed to a person. In some jurisdictions, an electronic tag fitted above the ankle is used for people as part of their bail or probation conditions. It is also used in healthcare settings and in immigration contexts. Electronic tagging can be used in combination with the global positioning system (GPS). For short-range monitoring of a person that wears an electronic tag, radio frequency technology is used. History The electronic monitoring of humans found its first commercial applications in the 1980s. Portable transceivers that could record the location of volunteers were first developed by a group of researchers at Harvard University in the early 1960s. The researchers cited the psychological perspective of B. F. Skinner as underpinning for their academic project. The portable electronic tag was called ''behavior transmitter-reinforcer'' and could transmit data two-ways between a ''base station'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salted Challenge Response Authentication Mechanism
In cryptography, the Salted Challenge Response Authentication Mechanism (SCRAM) is a family of modern, password-based challenge–response authentication mechanisms providing authentication of a user to a server. As it is specified for Simple Authentication and Security Layer (SASL), it can be used for password-based logins to services like SMTP and IMAP (e-mail), XMPP (chat), or MongoDB (database). For XMPP, supporting it is mandatory. Motivation Alice wants to log into Bob's server. She needs to prove she is who she claims to be. For solving this authentication problem, Alice and Bob have agreed upon a password, which Alice knows, and which Bob knows how to verify. Now Alice could send her password over an unencrypted connection to Bob in a clear text form, for him to verify. That would however make the password accessible to Mallory, who is wiretapping the line. Alice and Bob could try to bypass this by encrypting the connection. However, Alice doesn't know whether the encry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scram Cannon
A ram accelerator is a device for accelerating projectiles or just a single projectile to extremely high speeds using jet-engine-like propulsion cycles based on ramjet or scramjet combustion processes. It is thought to be possible to achieve non-rocket spacelaunch with this technology. It consists of a long tube (barrel) filled with a mixture of combustible gases with a frangible diaphragm at either end to contain the gases. The projectile is fired by another means (e.g., a light-gas gun or railgun) supersonically through the first diaphragm into the tube. Then the projectile burns the gases as fuel, because it is shaped like a ramjet or scramjet core, and accelerates under jet propulsion. Other physics come into play at higher velocities. Description In a normal ramjet, air is compressed between a spike-shaped centerbody and an outer cowling, fuel is added and burned, and high speed exhaust gases are expanded supersonically out of the nozzle to generate thrust. In a ram accele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scramjet
A scramjet (supersonic combustion ramjet) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow. As in ramjets, a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion (hence ''ram''jet), but whereas a ramjet decelerates the air to subsonic velocities before combustion using shock cones, a scramjet has no shock cone and slows the airflow using shockwaves produced by its ignition source in place of a shock cone. This allows the scramjet to operate efficiently at extremely high speeds. History Before 2000 The Bell X-1 attained supersonic flight in 1947 and, by the early 1960s, rapid progress toward faster aircraft suggested that operational aircraft would be flying at "hypersonic" speeds within a few years. Except for specialized rocket research vehicles like the North American X-15 and other rocket-powered spacecraft, aircraft top speeds have remained level, generally in the range of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Static Column RAM
Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal-oxide-semiconductor (MOS) technology. While most DRAM memory cell designs use a capacitor and transistor, some only use two transistors. In the designs where a capacitor is used, the capacitor can either be charged or discharged; these two states are taken to represent the two values of a bit, conventionally called 0 and 1. The electric charge on the capacitors gradually leaks away; without intervention the data on the capacitor would soon be lost. To prevent this, DRAM requires an external ''memory refresh'' circuit which periodically rewrites the data in the capacitors, restoring them to their original charge. This refresh process is the defining characteristic of dynamic random-access memory, in contrast to static random-access memory (SRAM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
