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Virtual networks that allow tenants to explicitly specify their computing as well as networking resources are recently proposed to be better interfaces between cloud providers and tenants. Many virtual networks have time-varying resource demands, as evidenced in prior studies [1-3]. New opportunities emerge when such variation is exploited. In this paper, we design a novel resource demand model for...
Different maintenance support departments perform developments of these simulators and they are running on several different platforms and using different computer languages. As a result a wide range of simulation models have been developed, but these models couldn't be reused efficiently. The SMP2 (Simulation Model Portability Standard 2)'s main purpose is to promote portability and reuse of simulation...
Precise geomagnetic reference map is needed for geomagnetic matching navigation and surface spline method is used in this paper to construct small-scale geomagnetic reference map. Of all the pretreated data, a part of them are used to construct the surface spline model, and the remain are used to validate the model, and then the data needed for the geomagnetic reference map are calculated by the surface...
Analyzed the energy consumption disciplinarian of the nodes in WSN, the node's energy attenuation forecast model (EAFM) can be established. A difference-threshold reporting mechanism (DTRM) is used to report the residual energy of nodes. The energy collection mechanism based on EAFM and DTRM can reduce energy data reporting times significantly, improve the efficient of energy data collection, save...
Wireless sensor networks (WSNs) are resource-constrained networks, especially when the energy is highly constrained; the application of WSNs is severely restricted. Data fusion can effectively reduce the volume of data transmission in the network, reduce the energy consumption to extend network lifetime and improve bandwidth utilization, as a result, it can overcome the restriction of energy and bandwidth...
Geomagnetic reference map is the basis for geomagnetic navigation, and modeling of regional geomagnetic field is one of the available methods to construct the geomagnetic reference map. Common-used modeling methods are not so fit for the small-scale regional geomagnetic field, so new ways to modeling of regional geomagnetic field is needed. The total intensity of geomagnetic field is a complicated...
Recovery from information attacks is difficult because DBMS is not designed to deal with malicious committed transactions. A few existing methods developed for this purpose rely on operation logs, which can't express the dependency between different transactions directly. These methods usually use rollback mechanism and abandon results of innocent transactions to maintain correctness, which may indeed...
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