Fault Trees Sample Clauses

Fault Trees. Δ A fault tree ‘ ’ is a directed acyclic graph that models how component failures propagate and eventually cause the full system to fail. The leaves are called basic elements (or basic events), and model the failure of elemental components. Other nodes called intermediate events are labelled with gates, and describe how combi- nations of lower failures propagate to upper levels. A full-system failure is called a top level event (tle), and takes place when the root node of the tree fails. In this work we consider the repairable dynamic fault trees (rfts) presented in [8, 19]. Thus, each basic element (BE) b is equipped with a failure distribution Fb that governs its failure probability as a function of time, and a repair distri- bution Rb that governs its repair time. Some BEs are used as spare components: these (SBEs) replace a primary component when it fails. The dormancy distri- bution Db of an SBE b describes its failure while dormant, i.e. not in use. Only if b becomes active its failure distribution is given by Fb.
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Related to Fault Trees

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  • Tandem Transit Traffic 12.1 As used in this Section, Tandem Transit Traffic is Telephone Exchange Service traffic that originates on CBB's network, and is transported through Verizon’s Tandem to the subtending End Office or its equivalent of another carrier (CLEC, ILEC other than Verizon, Commercial Mobile Radio Service (CMRS) carrier, or other LEC (“Other Carrier”). Neither the originating nor terminating customer is a Customer of Verizon. Subtending End Offices shall be determined in accordance with and as identified in the Local Exchange Routing Guide (LERG). Switched Exchange Access Service traffic is not Tandem Transit Traffic.

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  • Transit Traffic The following rates will apply:

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(AC) variation of the color, or graining of wood or wood products, marble or leather; (AD) split leathers used in seat cushions, back cushions or top or inside arm areas; (AE) natural markings on leather, such as, healed scars, insect bites, brand marks or wrinkles, or suede, and leathers with embossed patterns other than those stimulating natural cowhide; (AF) non- bovine leathers, and other buffed leathers; (AG) stains, color loss or damage resulting from cleaning methods or products (detergents, abrasives or other harsh cleaning agents) other than those recommended by the furniture manufacturer; (AH) stone or sand abrasion; (AI) loss or damage resulting from: pre-existing conditions known to You; (AJ) wear related issues, such as but not limited to, fading, wear, seam separation, stress tears, loss of foam resiliency, pilling or fraying of any fabric on all types of furniture; (AK) color loss or cracking and peeling on any leather or vinyl; (AL) splits or bi-cast leather; (AM) furniture that is used for commercial, institutional, outdoor or rental purposes; 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