一种新型的GSM接收机的设计与实现

依据GSM协议,结合GSM数字移动通信系统信号传输的特点,给出了基于GSM系统的带软输出结构的MLSE接收机的设计方案,阐述了MLSE接收机的实现算法。实际环境的试验结果表明:工程实现的MLSE接收机具有良好的工作性能和一定的实际应用价值。     

快速傅立叶变换在数字信号处理器上的实现研究

结合数字信号处理器的性能特点,对基2、基4、分裂基和Bruun FFT等快速傅立叶变换算法及其在TMS320C30上的实现进行了研究,开发出高效的FFT算法和程序。     

An adaptive sampling scheme guided by BART—with an application to predict processor performance

The evaluation of new processor designs is an important issue in electrical and computer engineering. Architects use simulations to evaluate designs and to understand trade‐offs and interactions among design parameters. However, due to the lengthy simulation time and limited resources, it is often practically impossible to simulate a full factorial design space. Effective sampling methods and predictive models are required. In this paper, the authors propose an automated performance predictive approach which employs an adaptive sampling scheme that interactively works with the predictive model to select samples for simulation. These samples are then used to build Bayesian additive regression trees, which in turn are used to predict the whole design space. Both real data analysis and simulation studies show that the method is effective in that, though sampling at very few design points, it generates highly accurate predictions on the unsampled points. Furthermore, the proposed model provides quantitative interpretation tools with which investigators can efficiently tune design parameters in order to improve processor performance. The Canadian Journal of Statistics 38: 136–152; 2010 © 2010 Statistical Society of Canada     

SOJOURN TIMES IN NON-HOMOGENEOUS QBD PROCESSES WITH PROCESSOR SHARING

We study sojourn times of customers in a processor sharing queue with a service rate that varies over time, depending on the number of customers and on the state of a random environment. An explicit expression is derived for the Laplace–Stieltjes transform of the sojourn time conditional on the state upon arrival and the amount of work brought into the system. Particular attention is paid to the conditional mean sojourn time of a customer as a function of his required amount of work, and we establish the existence of an asymptote as the amount of work tends to infinity. The method of random time change is then extended to include the possibility of a varying service rate. By means of this method, we explain the well-established proportionality between the conditional mean sojourn time and required amount of work in processor sharing queues without random environment. Based on numerical experiments, we propose an approximation for the conditional mean sojourn time. Although first presented for exponentially distributed service requirements, the analysis is shown to extend to phase-type services. The service discipline of discriminatory processor sharing is also shown to fall within the framework.     

实现千兆防火墙的关键技术及其发展前景

针对目前国内很多"号称"具有千兆防火墙的技术局面,阐述了真正的千兆防火墙所要达到的性能要求,详细地分析了实现千兆防火墙的关键技术,展望了防火墙包过滤技术、体系结构和系统管理3方面的发展趋势.     

高校资料室期刊外借服务探讨

针对国内大多数高校期刊不外借的现状,分析了导致期刊不外借的原因,然后指出高校资料室外借的必要性和可行性,提出加大期刊宣传力度、提高期刊采购经费、建立严格的借阅制度等期刊外借的具体实施办法。研究结果对高校期刊有效利用具有指导作用。     

《民法典人格权编(草案)》有关“个人信息保护”的修改建议

围绕《中华人民共和国民法典人格权编（草案）》三审稿中 “个人信息保护”的相关内容提出修改和完善建议,内容涉及完善隐私和个人信息的定义、个人信息“处理”的内涵、个人信息保护的原则、自然人“更正权和删除权”的义务保障,以及个人信息（数据）法律关系的确认和个人信息“处理”的免责等问题。     

基于TMS320F240的直接转矩模糊控制系统研究

介绍基于数字信号处理器直接转矩模糊控制系统,提出一种采用模糊逻辑在线估算定子电阻的方法,可以提高系统的低速性能和响应。通过观测器对定子磁链和速度估计,采用TMS320F240构成直接转矩模糊控制系统,实验结果表明了该方案的可行性。     

集散系统中基于多线程的多机串行通信实现

给出了集散系统中主从式多机串行通信的实现方案，并以最常用的MCS-51单片机为下位机，PC系统机为上位机，用C Builder语言及单片机汇编语言实现了基于多线程技术和消息响应机制的多机异步串行通信，给出了系统连接和编程的方法及流程．     

基于逆向供应链间回收价格竞争的回收渠道选择策略

基于废旧电子产品回收市场中存在处理商选择回收渠道的问题,本文构建了双链竞争下处理商回收渠道选择的博弈模型。通过文献研究,本文在总结出了回收市场中双链竞争下的四种回收方式基础上,运用博弈理论方法建立了市场机制下处理商回收渠道选择博弈模型,并用数值仿真分析了博弈均衡结果。研究结果表明：（1）混合模式下,选择直接回收渠道的处理商的回收价格最高、数量最多和利润最大;选择间接回收渠道的处理商回收价格最低、数量最少和利润最小;（2）三种模式下,回收价格、回收数量、处理商的利润和逆向供应链的利润均与消费者的敏感系数乘正比;（3）三种模式下,回收数量、处理商的利润和逆向供应链的利润均与回收竞争系数成反比;（4）三种模式下,随着成本差异的增加不管在哪种模式下处理商1的利润在逐渐增大,处理商2利润在逐渐减少。这些有益的结论能为现实中处理商管理者决策提供理论帮助和方法支持。