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It was not required to be used if a water pipe or other grounding electrode was present. In 1978, the NEC allowed 1/2 inch rebar to be used as a grounding electrode [NEC 250.52(A)(3)]. The NEC refers to this type of ground as a "Concrete Encased Electrode" (CEE) instead of using the name Ufer ground.
Safetran VIU-ACSES Field Encoder monitors wayside status information and sends track signal states through the ground network to locomotives.. The on-board equipment consists of a computer that also stores the route characteristics database, a distance measurement subsystem to track train position, an antenna subsystem for the track mounted balises, and a data radio subsystem for communication ...
SAE J1772, also known as a J plug or Type 1 connector after its international standard, IEC 62196 Type 1, is a North American standard for electrical connectors for electric vehicles maintained by SAE International under the formal title "SAE Surface Vehicle Recommended Practice J1772, SAE Electric Vehicle Conductive Charge Coupler".
The Navy special ordered SD-LGP D8s (SD=stretched dozer, LGP=low ground pressure) [162] with the frames extended 4 feet and tracks 54 inches wide [162] resulting in a ground pressure of 4.30 psi and blades 18.5 feet wide. There were two types of sleds: 10 ton or 20 ton that could be hitched in multiples.
6 January – Chinese researchers report that they have built the world's largest integrated quantum communication network, combining over 700 optical fibers with two QKD-ground-to-satellite links for a total distance between nodes of the network of up to ~4,600 km. [342] [343]
The transistor count is the number of transistors in an electronic device (typically on a single substrate or silicon die).It is the most common measure of integrated circuit complexity (although the majority of transistors in modern microprocessors are contained in cache memories, which consist mostly of the same memory cell circuits replicated many times).
According to Yeung, the gecko robot could rapidly climb up and down a variety of building walls, navigate through ground and wall fissures, and walk upside-down on the ceiling. It was also able to adapt to the surfaces of smooth glass, rough, sticky or dusty walls as well as various types of metallic materials.
Computer processing efficiency, measured as the power needed per million instructions per second (watts per MIPS) Instructions per second (IPS) is a measure of a computer's processor speed.