在建筑中设置分布式供能系统站房的安全技术分析及对策

分析了原动机在民用建筑物内设置、运行可能产生的危险因素，根据这些危险因素分析阐述了机房设置的安全技术原则是预防为主，通过提供安全可靠的技术设备、多种检测手段及良好的通风环境，使发生事故的可能性降至最低。同时加强建筑物的安全措施做好准备，万一发生事故，能使事故产生的损失减小到最低限度。     

The Efficiency of Engineering Traffic Across Network Boundaries

With the arrival of wideband packet and circuit-oriented data services, it becomes a challenge to provide efficiently the desired quality of service for speech, packet data, and real-time data on a network. As these diverse networks will coexist, architectural studies on integrated heterogeneous networks suggest that a common radio resource manager be used to coordinate radio resource allocation between diverse network types. Initial studies show that supernets, which engineer traffic across wireless networks, are more efficient than operating separate cellular/wireless networks. Increased sharing occurs in supernets because a larger number of services compete for a larger pool of resources. If sharing can be shown to be efficient in general, then supernets should likewise be more efficient. This study decomposes the two-dimensional Markov chain to prove when sharing is beneficial and when it is not.     

SOI亚微米波导光栅的设计与制作

报道了SOI基亚微米小尺寸波导光栅器件的设计、制作与测试结果。提出了波导与光栅同步制作的方案,避免了套刻,节约了成本。实验中采用电子束光刻(EBL)、感应耦合等离子体(ICP)刻蚀等先进半导体工艺技术,结合图形补偿等技术手段,完成了亚微米波导光栅的制作。光栅周期为350nm,占空比16∶19。采用该光栅做反射镜,制作了法布里-珀罗(F-P)谐振腔,经测试得到了与模拟相吻合的结果,峰谷比达到11dB。     

变电站综合自动化系统的结构方式

变电站综合自动化系统是电网改造中的重要设备。而系统的结构方式是制约设备性能、造价和可靠性的关键因素。本文结合作者多年来从事电力自动化方面的研究和实践,从分析系统结构方式入手,说明了不同结构方式对设备的性能、造价和可靠性所产生的截然不同的效果。     

基于硅基微环谐振器的光学导向逻辑器件

光学导向逻辑器件是采用光开关网络执行逻辑运算的典型应用,光学网络中每一个开关的状态由施加到该开关的电学布尔信号决定。网络中每一个光开关的操作都是独立于其他光开关的操作,并且操作运算结果以光速在网络中传播。因此,光学导向逻辑器件具有非常高的运行速度,且总延迟非常小。硅基微环谐振器由于其尺寸小、功耗低、与CMOS工艺兼容等特性成为构建光学导向逻辑器件的理想单元器件。基于硅基微环谐振器的光学导向逻辑器件很容易实现大规模集成和低成本制备,已经提出并实现的基于硅基微环谐振器的光学导向逻辑器件包括"或/或非"、"与/与非"、"异或/同或"、编码器、译码器和半加器等。回顾了本课题组基于硅基微环谐振器实现的光学导向逻辑器件的研究成果和该领域的最新发展。     

基于单片机多回路温度采集系统的设计

多路温度采集系统由主控制器、温度采集电路、温度显示电路及键盘输入控制电路组成。它利用单片机AT89C52做控制及数据处理器、智能温度传感器DS18B20做温度检测器、LCD显示管做温度显示输出设备。硬件电路成本较低,测温范围大,测量精度高,读数显示直观,使用方便。     

厚膜混合集成电路可靠性技术

总结了混合集成电路的主要失效模式,在此基础上,主要从混合集成电路的设计和工艺两方面分析了其产生的原因,通过设计、工艺、原材料和元器件等方面采取对策和措施,达到提高混合集成电路可靠性的目的.     

Deterministic Time-Varying Packet Fair Queueing for Integrated Services Networks

In integrated services networks, the provision of Quality of Service (QoS) guarantees depends critically upon the scheduling algorithm employed at the network layer. In this work we review fundamental results on scheduling, and we focus on Packet Fair Queueing (PFQ) algorithms, which have been proposed for QoS wireline-wireless networking. The basic notion in PFQ is that the bandwidth allocated to a session is proportional to a positive weight _i . Because of the fixed weight assignment, the inherent in PFQ delay-bandwidth coupling imposes limitations on the range of QoS that can be supported. We develop PFQ with deterministic time-varying weight assignments, and we propose a low-overhead algorithm capable of supporting arbitrary piecewise linear service curves which achieve delay-bandwidth decoupling. Unlike existing service-curve based algorithms, our time-varying PFQ scheme does not exhibit the punishment phenomenon, and allows sessions to exploit the extra bandwidth in under-loaded networks.     

高山微波站防雷技术研究及探讨

从现代防雷理论及福建省无线通信局开展的防雷改造实际效果方面,论述了高山微波站防雷改造中采用的“高压电缆埋地”、“双向多级分流”两项措施具有的科学性、先进性、经济性和可推广性。