数字散斑相关法测量连续位移的原理与实验

提出用数字散斑相关方法测量移动物体的连续位移.激光照射粗糙表面形成散斑场,用CCD记录粗糙表面移动时的序列散斑图像,利用数字散斑相关方法分析散斑图像,确定粗糙表面的位移.研究结果表明,数字散斑相关技术可以高精度地测出连续移动物体的位移.     

Two neuropeptides from synganglia of the hard tick, Ixodes sinensis （Acari： Ixodidae）

Two neuropeptides were isolated from synganglia (central nervous system) of the hard tick, Ixodes sinensis. Their primary sequences were established as Leu-Val-Val-Tyr-Pro-Trp-Thr-Lys and Trp-Glu-Lys-Leu-Gly-Ser-Met-Glu-Thr-Leu. By hot plate bioassay, neuropeptide a displayed strong antino-ciceptive effect in mice by a dose-dependent behavior, while neuropeptide b had some relaxant effects on the isolated rat strip. These neuropeptides might be involved in down-regulating the host's defensive reaction.     

类功能性反应两种群食饵-捕食者模型的脉冲控制

研究了一类具HollingⅡ类功能性反应两种群食饵-捕食者模型：{x=x（a-bx）-axy/1＋wx,y=-dy＋eaxy/1＋wx,的脉冲控制稳定性问题，应用脉冲微分方程稳定性理论给出了上述模型在加了脉冲后的脉冲控制稳定的充分条件，并对脉冲控制时间间隔作了估计．     

几种抗氧化剂对脂质过氧化的抑制作用

以大鼠肝微粒体为材料检测了几种常用抗氧化剂对由Fe^2＋／Vc启动的脂质过氧化的抑制作用．各化合物的抗氧化作用都呈浓度依赖关系．以半抑制浓度表示其抗氧化作用．结果表明，抗氧化作用由强到弱的次序为槲皮素〉BHT〉Trolox〉芦丁〉焦性没食子酸〉硫脲〉亚硒酸钠〉Vc〉甘露醇．     

协同环境中用户之间的交互性问题

协同环境中用户之间的交互性和协同感知程度是衡量协同环境性能的重要指标。目前大部分CSCW应用系统中用户之间的交互仍然采用基于文本对话框等传统交互方式，交互程度明显不足，严重影响了协同工作的效率。本文根据用户之间交互对象的不同，将其交互划分为用户之间、用户与其替身、用户与另一用户替身及替身之间四个交互层，并通过为用户在协同环境中的人物代表．3D替身(avatar)绑定智能代理，初步建立了一套比较完善的交互机制，从而实现了协同环境中交互行为的动态控制，解决了现有用户间交互性不足的问题。     

多用户检测重扩智能天线研究

提出由最小均方误差算法（LMS）实现的自适应天线阵 盲多用户检测组成的智能天线方案，自适应天线阵形成指向用户的波束，波束输出经多用户检测解调出用户数据，而LMS自适应天线阵所需的参考信号由解调出的用户数据重扩发生，数值仿真结果表明，该方案比匹配滤波器解扩重扩天线阵有更好的性能；而与多用户检测 波束合成的时空处理方案相比，我们提出的方法计算量要少。     

Cooling effect of ripped-stone embankments on Qing-Tibet railway under climatic warming

The heat convection in ballast mass and ripped-stone mass in railway embankments is the problem of heat convection in porous media. In order to calculate the temperature distribution of Qing-Tibet railway embankment, from the governing equations used to study forced convec-tion for incompressible fluids porous media, the finite ele-ment formulae for heat convection in porous media are de-rived by using Galerkin抯 method. The temperature fields of the traditional ballast embankment and the ripped-stone mass embankment, constructed on July 15, have been ana-lyzed and compared under the case that the air temperature in Qinghai-Tibetan Plateau will be warmed up by 2.0℃ in the future 50 years. The calculated results indicate that, the permafrost 5 m below the traditional ballast embankment will be thawed in the regions in which the air yearly-average temperature is larger than -3.5℃ or the yearly-average temperature at the native surface is larger than -1℃. The embankment will cause large thawing settlement. The rail-way embankment will be damaged by permafrost degrada-tion. The ripped-stone mass embankment can not only resist the effect of climatic warm up on it but also provide cool energy for the permafrost under it. It can assure permafrost stability and not subjected to thawing. Therefore, it is highly recommended that the ripped-stone mass embankment be taken as the Qing-Tibet railway embankment structure in high-temperature permafrost regions so that permafrost embankment can be protected as possible as we could.     

车镇凹陷鼻状构造与油气富集的关系

在对车镇凹陷鼻状构造的分布、成因机制分析的基础上,结合对生油岩条件和生储盖组合的研究,探讨了区内鼻状构造与油气富集的关系.油气沿鼻状构造的脊线进行运移,在鼻状构造脊线附近的圈闭聚集,而鼻状构造槽线位置的探井油气贫乏,甚至无油气显示.油气受鼻状构造脊线的控制呈放射状分布,受南北断阶带断层的遮挡呈环状分布的规律.这种油气富集规律的研究,对认识我国东部陆相断陷盆地的油气富集规律具有一定的意义.     

巨型计算机与微型计算机

系统地介绍了国内外巨型计算机与微型计算机的历史、现状与发展趋势。     

关于人机工程学几个基本问题的探讨

本文试图从理论上探讨人机工程学产生和发展的一些基本问题,以利于我国建立自己的人机工程学。本文就四个问题提出了一些观点:判断人机工程学产生的理论基点、人机工程学的综合化和分支趋势、人机工程学的系统科学化、人机工程学的高技术化。