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Application programming interfaces (APIs) offer a plethora of functionalities for developers to reuse without reinventing the wheel. Identifying the appropriate APIs given a project requirement is critical for the success of a project, as many functionalities can be reused to achieve faster development. However, the massive number of APIs would often hinder the developers’ ability to quickly find...
Hidden failure of protection relays is one of the important reasons of cascading failure and disconnection of power systems. It is significant to improve the reliability for protection. So far, the hidden failure remains undetected. An analytic model based on protection signals is proposed to detect hidden failures of protection relays in this paper. In this model, fault location, protection start...
Based on the material flow theory and comprehensive logistics theory, this paper analyzes the sustainable development principle of comprehensive logistics, and then establish the ESN-DSR structural model of logistics enterprise sustainable comprehensive logistics based on DSR model. On this basis, the paper puts forward the index system of logistics enterprise comprehensive logistics index, and carries...
In this paper, we analyze three QoE-based speech quality evaluation models: PESQ, NPESQ and POLQA models. PESQ (Perceptual evaluation of speech quality) is a well known objective speech quality assessment method for speech QoE evaluation. It is formed as the ITU-T P.862 Recommendations. NPESQ (New Perceptual Evaluation of Speech Quality) model is a new objective QoE model on evaluating the speech...
According to the complexity and the uncertainty in selecting cooperative partner of virtual research center (VRC), a novel evaluation model based on support vector machine and fuzzy analytic hierarchy process (SVM-FAHP) was proposed. The partner selection for the Yalong River hydropower development VRC was presented as an example and a comparison with the previous models was performed. It's showed...
In this paper, various kinds of popular traffic cellular automaton models are studied, Classification and evaluation of both the single lane and double lane models are accomplished. Simulation is done to compare the nonlinear phenomenon of the models, Fitness of the models to actual environment is examined. And characteristics of different models are discussed and compared.
Server farms are playing an important role in the Internet infrastructure today. However, the increasing power consumption of server farms makes them expensive to operate. Thus, how to reduce the power consumed by server farms has become a important research topic. Power can be thought as a resource of system, just like traditional resources, and we can manage power via improved resource management...
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