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In this paper we present results from test and quantitative analysis of leading hypervisors Xen, Kvm and Vmware. Our test comparison was carried out using benchmarks which can performance on the overall performance, performance isolation, and scalability of virtual machines running on these three hypervisors. To compare, we need to measure the efficiency of the virtualization technologies. We define...
Rough sets theory is applied to the service matchmaking algorithm for pervasive computing. The relevant service matchmaking algorithm model and method are presented in the paper. The decision system is built on the basis of the sample data from service resources. The evaluation indexes for service matchmaking are taken as the attributes to find out the important attributes that reflect the essential...
The design adds voice alarm function to ordinary alarm to solve the alarm problems in the market. It not only makes the users understand the reason of alarm more directly and effectively but also can play various voice according to various condition. The design uses 89C52 microcontroller as the core, SPI serial communication to develop and design the alarm system. The users may record voice content...
In this paper, we present the concept of a PCI-based GPS receiver architecture with the aim of providing a platform for investigating new receiver architectures and algorithms for current and upcoming GNSS receivers. We designed and implemented the RF front end, the baseband signal processing module and the PCI interface circuit, which compose a GNSS receiver. The work of hardware testing was carried...
Dynamic water surface simulation is an important part of simulating natural scene. Ben Humphrey used projection texture mapping, depth texture and mobile texture to render dynamic water surface and got a good result. In this paper, an improvement method will presented for speeding up its rendering speed and enhancing the rendering effects. It uses a viewpoint correlative method to replace depth texture...
Virtual machines with advances in software and architectural support have emerged as the basis for enterprises to allocate resources recently. One main benefit of virtual machine is server consolidation. However, flexible and complex consolidation results in some unpredictable performance problems and introduces new requirements, such as proper configurations for scheduler and reasonable arrangements...
A high efficient random number generators (RNGs) in simple structure with period 2k-1 is presented, where k is the multiple of 32. Software implementation of these RNGs only require few fundamental instructions, such as XOR operations and circular rotation operations, as a result that they have a very high software efficiency and low memory consumption compared to some other RNGs. Meanwhile due to...
Sensor network is an important technology in the domain of information technology application. Based on the embedded system and the transmission network bus, this paper offers the system structure and the testing flow of an evaluation system for the design structure of sensor network. The software and hardware of the evaluation system could be modulated based on user's requirement. The structure and...
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