雷电脉冲对导体平面窄缝隙穿透的时域分析

研究无限大导体平面任意形状窄缝隙对雷电脉冲的时域穿透特性。文中以窄缝隙内等效面磁流为未知量建立了时域微积分方程，寻求了一种稳定有效的数值求解方法，编程计算了穿透电场时域特性，并给出了分析结论。     

水轮机导叶双列叶栅的水力优化

以水力损失为目标函数，对固定导叶，活动导叶叶型及周向相对位置进行了优化，计算结果表明：与常规方法相比，本文方法用于水轮机导叶双列叶栅的水力设计能提高其水力效率。     

镧系元素性质递变的双峰现象

本文从镧系的电子结构和化学键参数分析了镧系元素性质遂变的双峰现象的本质。并探讨了它在稀土分离提取工艺方面应用的可能性。     

高压大容量发电机定子线圈槽部电场的数值分析

采用有限单元法，编制了适用于微机系统的槽部电场计算专用软件，计算了大型发电机定子线圈槽部电场的分布，软件通用性强，使用简便。利用线性回归方法，求出了定子线圈槽部最大场强与导线圆角半径和绝缘厚度的关系。为大型发电机绝缘结构优化设计提供了理论依据。     

电机槽漏抗的有限元分析

定子绕组槽漏抗是电机的一个重要电磁参数。在一些大型电机设计中,准确计算电机的槽漏抗是必要的。实测表明,传统的设计公式得到的槽漏抗值偏小。本文通过磁场分析来计算电机的槽漏抗,能计及电机磁路及导体的实际布置,求出两维磁场分布,进而得到合理的漏抗值。 Sereen-Mesh软件被应用于磁场分析中,运用有限元网格自适应技术,使新的槽漏抗计算方法在精度和经济性上都能满足工程实用的需要。     

双回线故障精确测距法

将M.S.Sachdcv等人提出的单回线测距法应用到具有零序互阻抗的双回线路上。它利用故障线路两端的数字式阻抗继电器所测量的电压和电流的基频分量进行测距,具有公式不迭代、精度与故障点电阻和电源阻抗无关、两端测量不必同步、以及利用阻抗继电器的计算结果简化测距计算等优点。     

Preparation and characterization of new Ca–Al–polycarboxylate layered double hydroxides

The synthesis and characterization of composite materials based on calcium–aluminum layered double hydroxides (Ca–Al-LDHs), intercalated with organic polycarboxylate (PC) polymers, is described. The PC polymers, which exhibit a “comb-like” architecture, contain ethylene oxide side chains of different lengths. They are intercalated between the cationic Ca–Al–OH-layers when tricalcium aluminate is rehydrated in the presence of PC polymers. The intercalation compounds are characterized by X-ray diffraction (XRD), elemental analysis, IR spectroscopy and TEM. The basal spacings of the PC-LDH composite materials, determined by XRD, are dependent on the number of the ethylene oxide units (EOUs) in the side chain. Accordingly, first TEM micrographs reveal approximately similar layer distances. Elemental analysis as well as IR-spectroscopy proves the existence of the intercalated organic material.     

引信双频环形微带天线的研究

在对环形微带天线进行电阻加载实现天线小型化的基础上。通过对环形天线的C形开槽，实现了天线的双频带工作。采用基于矩量法的电磁仿真软件IE3D进行优化仿真，给出了一个双频环形微带天线的设计仿真结果，此天线适合在无线电引信系统中应用。     

Tradeoffs and theory: The double-mediation model.

[Correction Notice: An erratum for this article was reported in Vol 135(4) of Journal of Experimental Psychology: General (see record 2006-20327-004). This article was inadvertently printed with the incorrect title. A clarification regarding the correct title is provided in the erratum.] Most theories of decision making suggest that, when options imply tradeoffs between their attributes, conflict increases as tradeoff size increases, because greater sacrifices are to be incurred in choosing one option instead of another. An alternative view is that conflict decreases as tradeoff size increases, because stronger arguments can be made for any decision. The authors propose a unified model, the double-mediation model, which combines the mediating effects of sacrifice and argumentation. Our model generally predicts an inverse U-shaped relation between tradeoff size and conflict. Results support this prediction. Also, when the decision situation increases the mediating effect of sacrifice relative to that of argumentation, the relation between tradeoff size and conflict changes in an upward direction; conversely, when the decision situation increases the mediating effect of argumentation relative to that of sacrifice, the relation changes in a downward direction. Results support these predictions as well. Commonalities and differences between our model and other formulations are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

一种真空断路器真空度在线检测新方法

详细介绍了一种真空断路器真空度在线检测的新方法，其真空灭弧室经过特殊设计，使用内置式双波纹管灭弧室，利用外界气体压力和灭弧室内腔自闭力的平衡原理，当真空灭弧室有漏气时（外界大气压进入），引起自闭力的变化导致压力元件和位移传感器输出数据发生变化，从而使真空断路器本地闭锁并报警，同时经通用分组无线电业务（GPRS）网络也可实现远程监测报警。采用内置式双波纹管检测技术的真空断路器及其在线检测装置在现场应用情况良好，表明文中特殊设计的真空灭弧室具有推广实用价值。