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Conventional reliability models of belt drive systems in the failure mode of fatigue are mainly based on the static stress strength interference model and its extended models, which cannot consider dynamic factors in the operational duration and be used for further availability analysis. In this paper, time-dependent reliability models, failure rate models and availability models of belt drive systems...
A compact dual-polarized printed ultra-wideband (UWB) wide-slot antenna for multiple-input-multiple-output (MIMO)/ diversity application is proposed. The wide-slot antenna built on a printed circuit board (PCB) consists of two right-angled trapezoid radiation patches with two orthogonal feeding ports. High isolation is achieved by placing a short strip at the middle of the slot and etching an isosceles...
With the introduction of relevant laws and regulations in many countries, the electronic industry around the global has switched into lead-free age because of the harm of lead in solder on the environment and human health,. SnAgCu based solder is the most popular lead-free solder recently. The solder joint reliability has become an increasingly problem due to the change of packaging materials and...
Analytic hierarchy process (AHP) is a conjoint effective assessing method which combines qualitative and quantitative analysis. Since it is uncertain in the process of deal with qualitative object quatificationally. In order to improve the reliability, the process should be improved in appropriate theories and methods. The weight evaluation method is presented combining AHP and computer technology...
The paper develops the map matching algorithm based on GPS/DR integrated positioning system through the determination of error influence area, the choice of matching road section and the modification of positioning information, and then evaluates the reliability of the matching result through the fuzzy comprehensive evaluation. The algorithm is test with the outdoor in-vehicle experiment and has shown...
We introduce a ??bulk data transfer?? (BDT) mechanism across multi-autonomous system (AS). The mechanism performance is limited by the positions of source or replica servers and by the inter/intra AS routing strategies. Therefore, a new mechanism is proposed to enable the source peer to create several virtual replica servers to transfer the data to the destination peer together. The mechanism works...
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