Simultaneous Multithreading Fau Tolerance Processor

Transient fault detection mechanism is added to simultaneous muhithreading architecture. By exploiting both ILP (Instruction l~evel Parallelism) and TLP (Thread Level Parallelism), Simultaneous Multithreading(SMT) Fault Tolerance Processor can be expected to achieve better tradeoff between performance and hardware cost than traditional Fault Tolerance Processors. Detailed simulations of 3 of SPEC95 benchmarks show that executing two redundant programs on the fault-tolerant microarchitecture takes only 40%-61% longer than running a single version of the program. The new instruction fetch algorithm enhances the performance by 0. 4%～1% to most of the benchmarks we choose randomly.     

C#实现简易WEB服务器

以NET框架为平台的WEB程序较C／S结构的程序有着很多的优点，但也有一些局限，我们在很多时候需要WEB服．务器根据我们的需要提供更多的服务内容。本文介绍了一种通过自己构建一个简易的WEB服务器完成实时数据访问的方法，同时介绍了Sokect和Thread类的使用。     

Mixed thread/paper‐based microfluidic chips as a platform for glucose assays

A novel microfluidic thread/paper‐based analytical device (μTPAD) to detect glucose through a colorimetric assay is described. The μTPAD was fabricated from nylon thread trifurcated into three channels terminating at analysis sites comprised of circular zones of chromatography paper, which have previously been spotted with glucose of different concentrations. A solution of glucose oxidase (GOx), horseradish peroxidase (HRP), and potassium iodide (KI) is transported via capillary action to the analysis sites where a yellow‐brown color is observed indicating oxidation of iodide to iodine. The device was then dried, scanned, and analyzed yielding a correlation between yellow intensity and glucose concentrations. Both a flat platform constructed mainly of tape, and a cone platform constructed from tape and polyvinyl chloride, are described. Studies to quantitate glucose in artificial urine showed good correlation using the μTPAD.     

基于MSP430的直线导轨定位装置的设计与实现

直线导轨是数控技术的重要组成部件,它的精确程度非常重要。以MSP430单片机为核心,设计了一个直线导轨精确定位装置。此装置采用两相四线的ST57型步进电机和60CM的螺纹丝杆组成一个直线导轨组,选用M7128驱动器驱动步进电机,使用PWM波精确定位算法程序精确控制电机转速。MSP430的IO端口控制步进电机的正反转,使得步进电机带动螺纹丝杆转动,让滚动丝杠上的物体往复移动,并在电脑上显示当前位移值。试验证明,其定位精度为0.01cm,具有较高的可靠性和准确性,低成本,稳定性好。     

穴位埋线治疗消化性溃疡53例疗效观察

目的：探讨穴位埋线疗法治疗消化性溃疡的疗效．方法：将103例消化性溃疡患者随机分为埋线组53侧,西药组50例,并对其两组疗效进行观察．结果：两组中医症候痊愈率、总有效率分别为52．8％、90．6％;52．0％、92．0％．胃镜痊愈率、总有效率分别为41．5％、94．4％;40．0％、92．0％．两组比较差异无显著性（P〉0．05）．两组幽门螺旋杆菌转阴率分别为91．1％、90．3％（P〉0．05）．结论：穴位埋线具有抑制胃酸分泌及促进溃疡愈合的作用．     

两级柱螺纹套管接箍扣牙力计算与分析

本文提出了两级柱螺纹套管接箍扣牙受力分布计算的解析法．这种方法的计算结果表明，两级柱螺纹套管接箍扣牙力分布呈“Ｗ”形，扣牙力分布的均匀性得到明显改善，有效地提高了套管接箍的承载能力．计算值与市场产品的两级柱螺纹推荐上扣力矩和轴向拉力十分吻合，说明该计算方法是正确的．     

Equilibria of a class of transport equations arising in congestion control

We consider a multi-queue multi-server system with n servers (processors) and m queues. At the system there arrives a stationary and ergodic stream of m different types of requests with service requirements which are served according to the following k-limited head of the line processor sharing discipline: The first k requests at the head of the m queues are served in processor sharing by the n processors, where each request may receive at most the capacity of one processor. By means of sample path analysis and Loynes’ monotonicity method, a stationary and ergodic state process is constructed, and a necessary as well as a sufficient condition for the stability of the m separate queues are given, which are tight within the class of all stationary ergodic inputs. These conditions lead to tight necessary and sufficient conditions for the whole system, also in case of permanent customers, generalizing an earlier result by the authors for the case of n=k=1. This work was supported by a grant from the Siemens AG.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Java语言在通信程序中的应用

介绍了Ｊａｖａ网络通信方面的内容。在基于ＴＣＰ（传输控制协议）及ＵＤＰ（用户数据报协议）协议的前题下,运用Ｊａｖａ丰富的类库,完成了双机通信及多机通信等功能。给出了创建多线程的一些关键技术,为利用Ｊａｖａ语言开发通信程序的软件设计者提供了一些方法和经验。     

基于松散耦合MIMD计算机系统的函数式语言并行实现技术

本文基于ＭＩＭＤ计算机系统提出了函数式语言的并行ＬＥ机，并行ＬＥ在函数式语言ＦＰ的基本语义中增加对ＴＨＲＥＡＤ对象和延迟对象ＬＯＢＪ处理的语义规则，其计算能力介于积极计值和惰性计值之间，为有效开发程序中细颗粒度并行性，本文将延迟处理技术文入并行进程的生成过程中，为有效程序中细颗粒度行性，本文将延迟处理技术文入并行过程的生成中，因而在成分开发系统的并行处理能力的同时减少了系统生成的进程数目。