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A new implementation of LCX fault detection system based on the linear sweep frequency is presented in this paper. Firstly, the necessity and feasibility of fault detection for the LCX are illustrated, and detection system is elaborated form host software, FPGA design and synthesizer and chips control three primary aspects. Based on the demand and theoretical analysis, the LCX fault detection system...
Service computing technologies have been widely applied to many application domains to facilitate rapid system integration for desired goals. However, existing service models need to be enhanced for cyber-physical systems (CPS) and internet-of-things (IoT). In this paper, we develop an ontology model for the specification of services in CPS/IoT. First, we discuss the major differences in modeling...
Video watching time is a crucial measure for studying user watching behavior in online Internet video-on-demand (VoD) systems. It is important for system planning, user engagement study, and service quality evaluation. However, due to limited access to large-scale VoD systems, there is still a lack of accurate model for characterizing the distribution of user watching time on a per video basis. In...
To alleviate the server bandwidth cost of online video sharing services, p2p delivering has been suggested as an effective tool with success already seen in accelerating individual sites. The numerous video sharing sites existed however call for a universal solution that provides transparent p2p acceleration beyond ad hoc solutions. More importantly, only a universal platform can fully explore the...
In order to offer security for multicast applications, the group key has to be changed whenever a user joins or leaves the group. At present, there are two re-keying strategies: individual re-keying and batch re-keying. Individual re-keying method has the problems of inefficient and out-of-sync. Batch re-keying method alleviates these problems, but this method ignores the change probabilities of members...
In the monitoring system,the existing resource of Ethernet is used to remotely monitor power network parameters. A practical design of embedded Web server for power network monitoring is introduced, which applies high speed MCU (SX52BD) to conveniently link to Ethernet. Adopting Ethernet interface control mode, the remote network monitoring of power network is realized under Windows.
Aspectual component composition platform needs a new kind of language to support the description and verification of the software architecture. Based on the extension of Wright, this paper proposes an aspectual components composition architecture description language-AWright. Since Wright fails to describe system??s non-functional requirements and lacks corresponding elements for describing the coupling...
Many grid middleware such as Globus Toolkit and GPE have started to support virtual machines. They implement the remote control of virtual machine by grid service and make use of virtual machinespsila function of quick deployment to construct the execution environment of grid application fast. In order to support virtual machine in grid environment, VMGrid (Virtual Machine Grid) is presented. All...
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