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Consensus is a fundamental and important problem for cooperative control. This paper mainly studies the consensus of networked multi-agent systems with nonlinear couplings via pinning control. An adaptive desired weighting consensus protocol is proposed to control a small fraction of pinned agents for directed graphs. Then, an adaptive controller gain average consensus protocol is presented via the...
Consensus is a fundamental and important problem for cooperative control. This paper mainly studies on the distributed consensus of networked multi-agent systems with time varying nonlinear couplings. A time varying and nonlinear couplings theorem was considered. Then, a distributed consensus protocol is proposed by desired weighting and designed control gain, via output feedback control under directed...
Content Delivery Network (CDN) and Hypertext Transfer Protocol Secure (HTTPS) are two popular but independent web technologies, each of which has been well studied individually and independently. This paper provides a systematic study on how these two work together. We examined 20 popular CDN providers and 10,721 of their customer web sites using HTTPS. Our study reveals various problems with the...
Network processor is a type of specific instruction set processor which is used to process the data packet and possess specific circuit. In this paper, based on the testbench of network processor, functional coverage models are built by the two types of functional coverage expression provided by SystemVerilog. The functional coverage can be obtained automatically by these models. According to the...
The study in this paper is to solve the compatibility of the PLB and AHB interface. In our FPGA hardware platform, we use the PowerPC embedded in Xilinx Virtex4 as our CPU, which follows the PLB protocol. As our slave IP cores are all designed with the AHB interface, we need to design a PLB-AHB bridge to translate the two protocols. This paper describes in detail the designing of such a bridge, which...
Forwarding system is one of key components for high-performance router. In this paper, the architecture of router is described first. Then, software system of centralized router and the process of a packet are analyzed. At the end, the performance bottleneck of centralized router is pointed out. To get better performance, we propose a fast-forwarding mechanism to increase the speed of packet, which...
While the concept of collaboration provides a natural defense against massive spam emails directed at large numbers of recipients, designing effective collaborative anti-spam systems raises several important research challenges. First and foremost, since emails may contain confidential information, any collaborative anti-spam approach has to guarantee strong privacy protection to the participating...
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