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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. They have historically been widely used by law ...
Side project time. Some employers offer, as an employee benefit, a guarantee that employees may work on their personal projects during some part (usually a percentage) of their time at work. [1] [2] Side project time is limited by two stipulations: what the employee works on is the intellectual property of their employer, and if requested, an ...
On a typical mission, the SR-71 took off with only a partial fuel load to reduce stress on the brakes and tires during takeoff and also ensure it could successfully take off should one engine fail. Within 20 seconds the aircraft traveled 4,500 feet (1,400 m), reached 240 miles per hour (390 km/h), and lifted off.
Rayon, also called viscose [1] and commercialised in some countries as sabra silk or cactus silk, [2] is a semi-synthetic fiber, [3] made from natural sources of regenerated cellulose, such as wood and related agricultural products. [4] It has the same molecular structure as cellulose.
Dollar Shave Club was founded by Mark Levine and Michael Dubin. The pair met at a party and spoke of their frustrations with the cost of razor blades. With their own money and investments from start-up incubator Science Inc., they began operations in January 2011 and launched their website in April 2011. [6] [7] [8] [9]
A gray card is a flat object of a neutral-gray color that derives from a flat reflectance spectrum. A typical example is the Kodak R-27 set, which contains one 8 in × 10 in (20 cm × 25 cm) card and one 4 in × 5 in (10 cm × 13 cm) card, each with an 18% reflectance across the visible spectrum, and a white reverse side with a 90% reflectance.
A "one in 20 rule" has been suggested, indicating the need for shrinkage of regression coefficients, and a "one in 50 rule" for stepwise selection with the default p-value of 5%. [4] [6] Other studies, however, show that the one in ten rule may be too conservative as a general recommendation and that five to nine events per predictor can be ...