USB2.0技术在光电测量系统中的应用

针对光电测量系统的特点，介绍了一种基于外设控制器CY7C68013的光电测量系统运用USB2．0接口技术实现通讯的方案；文中详细给出了硬件原理图、数据传输方式以及软件设计内容。仿真实验表明该设计方案是合理可行的。     

γ辐照对聚己内酯性能的影响

研究了不同分子量的聚己内酯的辐照特性，聚已内酯(PCL)的分子量越大，辐射交联所需的凝胶化剂量越低。结果表明，溶胶分数s √s与I／D的关系很好地符合Charlesby-Pinner关系式，说明PCL的辐射交联属于无规交联。辐射交联对PCL的力学性能影响显著，辐射剂量越大，拉伸强度和断裂伸长率下降越多，但分子量较高的PCL的抗张强度受辐射剂量的影响较小。动态力学分析(DMA)分析表明，聚己内酯辐照交联后的弹性模量和耐热性能显著提高。     

Best tracking and regulation performance under control energy constraint

This paper studies optimal tracking and regulation control problems, in which objective functions of tracking error and regulated response, defined by integral square measures, are to be minimized jointly with the control effort, where the latter is measured by the plant input energy. Our primary objective in this work is to search for fundamental design limitations beyond those known to be imposed by nonminimum phase zeros, unstable poles, and time delays. For this purpose, we solve the problems explicitly by deriving analytical expressions for the best achievable performance. It is found that this performance limit depends not only on the plant nonminimum phase zeros, time delays, and unstable poles-a fact known previously-but also on the plant gain in the entire frequency range. The results thus reveal and quantify another source of fundamental performance limitations beyond those already known, which are nonexistent when only conventional performance objectives such as tracking and regulation are addressed without taking into account the control energy constraint. Among other things, they exhibit how the lightly damped poles, the anti-resonant zeros, as well as the bandwidth of the plant may affect the performance.     

核燃料循环中所用含磷萃取剂的辐照稳定性研究

对核燃料后处理以及高放废液处理中所用的含磷萃取剂的辐照稳定性已经进行了广泛的研究。对正辛基苯基-N，N’-二异丁基胺甲酰甲基氧化膦(CMPO)、二(2-乙基己基)磷酸(DEHPA)以及混合三烷基氧化膦(TRPO)等的辐照稳定性的研究进行了综述。主要介绍了CMPO、DEHPA和TRPO的辐解产物；辐照对萃取和保留的影响以及辐照后溶剂的净化方法。     

一种基于CORBA的分布式全文检索系统设计

海量信息的全文检索是人类获取信息的重要手段之一,而网络海量信息的检索使传统的全文检索技术面临新的挑战。如何改善检索系统的结构,提高检索系统的性能和效率,以加快检索速度,成为一个值得研究的课题。公用对象请求代理体系CORBA技术的出现为这一课题提供了一个有效的解决方法。该文在对WEB计算方式和CORBA体系进行详细讨论的基础上,结合实际课题的研究,给出了一种基于CORBA技术的分布式全文检索系统架构设计。     

高强混凝土T形截面双向压弯构件承载力的研究

对9根T形截面高强混凝土双向压弯构件进行试验研究,揭示了这类构件的破坏形态,并进一步分析T形截面正截面承载力的变化规律.     

A Unified Theory of Uncalibrated Stereo for Both Perspective and Affine Cameras

This paper addresses the recovery of structure and motion from uncalibrated images of a scene under full perspective or under affine projection. Particular emphasis is placed on the configuration of two views, while the extension to $N$ views is given in Appendix. A unified expression of the fundamental matrix is derived which is valid for any projection model without lens distortion (including full perspective and affine camera). Affine reconstruction is considered as a special projective reconstruction. The theory is elaborated in a way such that everyone having knowledge of linear algebra can understand the discussion without difficulty. A new technique for affine reconstruction is developed, which consists in first estimating the affine epipolar geometry and then performing a triangulation for each point match with respect to an implicit common affine basis.     

火力发电厂工业冷却水系统工艺分析

从技术、经济和安全三个方面分析了采用不锈钢管材凝汽器的火力发电厂的工业冷却水系统，采用闭式循环工艺运行方式的合理性。     

无功和电压质量

针对电网的特点,浅谈电力系统电压和无功功率的重要作用及几种控制技术的应用。