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A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable (i.e. confounding variables ). [ 1] This increases the reliability of the results, often through a comparison between control measurements and the other measurements. Scientific controls are a part of the ...
The Kansas City preventive patrol experiment was a landmark experiment carried out between 1972 and 1973 by the Kansas City Police Department of Kansas City, Missouri and the Police Foundation, an independent nonprofit research organization [1] today known as the National Policing Institute. [2] It was designed to test the assumption that the ...
A randomized controlled trial (or randomized control trial; [ 2] RCT) is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical techniques, medical devices, diagnostic procedures, diets or other medical treatments. [ 3][ 4]
American interest in " gravity control propulsion research " intensified during the early 1950s. Literature from that period used the terms anti-gravity, anti-gravitation, baricentric, counterbary, electrogravitics (eGrav), G-projects, gravitics, gravity control, and gravity propulsion. [ 1][ 2] Their publicized goals were to discover and ...
A Braitenberg vehicle is a concept conceived in a thought experiment by the Italian cyberneticist Valentino Braitenberg in his book Vehicles: Experiments in Synthetic Psychology. The book models the animal world in a minimalistic and constructive way, from simple reactive behaviours (like phototaxis ) through the simplest vehicles, to the ...
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines. The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides. Starting in the 1950s and 1960s, various ...
The Intermediate eXperimental Vehicle ( IXV) is a European Space Agency (ESA) experimental suborbital re-entry vehicle. It was developed to serve as a prototype lifting body orbital return vehicle to validate the ESA's work in the field of reusable orbital return vehicles. The European Space Agency has a program called Future Launchers ...
Electronic stability control ( ESC ), also referred to as electronic stability program ( ESP) or dynamic stability control ( DSC ), is a computerized technology [ 1][ 2] that improves a vehicle's stability by detecting and reducing loss of traction ( skidding ). [ 3] When ESC detects loss of steering control, it automatically applies the brakes ...