应用自然伽马曲线反演陇东地区延安组沉积旋回

自然伽马曲线包含丰富的地质信息,能够很好地反映由气候变化引起的地层旋回.采用频谱分析对鄂尔多斯盆地陇东地区延安组湖沼相自然伽马测井曲线进行反演,可以得出地层中很好地保存了高频的米兰科维奇旋回,认为研究区延安组地层中的沉积旋回主要受古气候变化的控制,其中偏心率周期引起的地层旋回厚度变化范围为7.86～16.75 m;地轴倾角周期引起的地层旋回厚度变化范围为2.34～6.36 m;岁差周期引起的地层旋回厚度变化范围为1.14～2.96 m.频谱分析法可用于测井曲线进行高频沉积旋回分析.     

阴离子聚电解质保护的金纳米粒子的制备及表征

采用NaBH4作为还原剂还原HAuCl4的方法,将阴离子聚电解质即聚丙烯酸(PAA)作为保护剂,成功制备了稳定性非常好的小粒径金纳米粒子．分别采用紫外-可见-近红外光谱仪(UV-vis-NIR)、透射电子显微镜(TEM)、光电子能谱仪(XPS)、X射线衍射仪(XRD)和电化学等实验方法对所制备样品进行表征．实验结果表明,合成体系的pH和所用阴离子聚电解质聚合物链的空间位阻对金纳米粒子的稳定性起着非常重要的作用．     

大型随机稀布阵列雷达的脉冲综合方法及其性能

大型随机稀布阵列可以用数量有限且结构简单的天线合成一大孔径雷达天线,以提高雷达的分辨能力。本文在综合脉冲孔径雷达（ＳＩＡＲ）体制基础上研究大型随机稀布阵列雷达的脉冲综合与孔径综合方法及其性能,并给出了计算机模拟结果。     

军用分布式交互仿真(DIS)原型系统的实现研究

讨论以军事训练为目的的分布式交互仿真技术,分析了ＤＩＳ设计需考虑的若干主要问题、一致通信环境、仿真应用开发的客户服务器环境,并在此基础上给出一个ＤＩＳ原型系统的网络结构、功能原理与性能分析。     

Economic Development and the QPMSLP of the Industrial Allocation of Foreign Capital

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Torsional Models of Two - ply Yarn

In this paper,the vector equation of a generaliseddoubly wound helix was derived.Treloar's pliedyarn geometry could be obtained as a special case ofthe generalised doubly wound helix.The shortest fi-bre length around the surface of a helical tube(formed by fibre helices)was determined by apply-ing variational principles.The fibre length as calcu-lated by using Treloar's geometry was compared in-directly with the shortest possible fibre length at dif-ferent levels of yarn deformation when some of Tre-loar's rigid geometrical constraints were relaxed.Anew idea based on non-concentric circles was intro-duced to approximate the fibre helix movement in atwo-ply yarn.A torsional model of two-ply yarnwas developed and the theoretical predictions werecompared with some preliminary experimental re-sults.     

Study on the Model of Thermal Channel Spinning Process for PET Polymer

A mathematical model to describe the TCS process inPET high-speed melt-spinning is established.The de-velopment of crystallinity,molecular orientation andmorphological features of high-speed-spun PET fiberin TCS process is investigated at take-up speeds rangingfrom 3600-4400 m/min and thermal channel tempera-tures ranging from 160-200℃ by simulation.The pro-files of tensile force,running velocity,temperature,bi-refringence,crystallinity and diameter in the TCS spin-line for various process conditions are obtained.Thepredicted results using this model are compared with themeasured crystallinty,diameter and birefringence.Theresults indicate that they are in fairly good agreement.The"necking point"in the TCS spinline can be predictedby this model,and its position changes with the corre-sponding process parameters such as take-up speed andthermal channel temperature.It is found that the neck-ing point moves towards the spinneret when the take-upspeed or the thermal channel temperature increases.     

通信仪器仿真实验室设计与实现

介绍了通信仪器仿真实验室的软、硬件开发与运行平台的选择,以及在Ｗｉｎｄｏｗｓ环境下应用程序的设计和实现过程。讨论了应用程序间的通信过程及实现方式,并简述了管理程序的设计。最后也指出了在软件设计上有待改进的地方。     

自动更新客户端应用的有效方法

提出了在ＦＴＰ（文件传输协议）方式下,客户机／服务器工作方式下的ＭＩＳ（管理信息系统）,在改变数据库口令和应用时能自动更新客户端应用的有效方法。