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The Department of Transportation and Public Works ( DTOP; Spanish: Departamento de Transportación y Obras Públicas) is the Executive Department of the Commonwealth of Puerto Rico that regulates transportation and public works in Puerto Rico. [1] [2] The agency's headquarters are located in San Juan.
In business, service rate is a performance metric used to measure the customer service in a supply organization. One example of a service rate measures the number of units filled as a percentage of the total ordered and is known as fill rate. If customer orders total 1000 units, and you can only meet 900 units of that order, your fill rate is 90%.
The federal weight limits for CMVs are 80,000 pounds (36,000 kg) for gross weight (unless the bridge formula dictates a lower limit), 34,000 pounds (15,000 kg) for a tandem axle, and 20,000 pounds (9,100 kg) for a single axle. [9] A tandem axle is defined as two or more consecutive axles whose centers are spaced more than 40 inches (102 cm) but ...
Dot pitch (sometimes called line pitch, stripe pitch, or phosphor pitch) is a specification for a computer display, computer printer, image scanner, or other pixel -based devices that describe the distance, for example, between dots ( sub-pixels) on a display screen. [1] [2] In the case of an RGB color display, the derived unit of pixel pitch ...
Mean time between failures ( MTBF) is the predicted elapsed time between inherent failures of a mechanical or electronic system during normal system operation. MTBF can be calculated as the arithmetic mean (average) time between failures of a system. The term is used for repairable systems while mean time to failure ( MTTF) denotes the expected ...
Boston's public transportation agency, the Massachusetts Bay Transportation Authority (MBTA), operates the oldest underground rapid transit system in the Americas and is the fourth-busiest rapid transit system in the country, with 65.5 mi (105 km) of track on four lines.
Trip generation. Trip generation is the first step in the conventional four-step transportation forecasting process used for forecasting travel demands. It predicts the number of trips originating in or destined for a particular traffic analysis zone (TAZ). [1] Trip generation analysis focuses on residences and residential trip generation is ...
The shear rate at the inner wall of a Newtonian fluid flowing within a pipe [2] is. where: γ ˙ {\displaystyle {\dot {\gamma }}} is the shear rate, measured in reciprocal seconds; v is the linear fluid velocity; d is the inside diameter of the pipe. The linear fluid velocity v is related to the volumetric flow rate Q by.