远程虚拟实验的构建

给出远程虚拟实验的技术原理与实现方法，按照基于虚拟原型的虚拟实验的一般原理，提出概率统计原理的虚拟实验方法以实现方案，基于Java语言，设计了一个远程虚拟实验系统并给出了几个实验实例。     

增强现实中基于视觉与磁力跟踪器的三维注册方法

讨论了如何实现了一种基于三个标志点的视觉式三维注册方法，对电磁式三维注册方法进行了必要的说明，给出了实验平台，同时对实验结果进行了必要的分析说明。实验表明，此方法比较有效。     

基于VRML的心理学虚拟实验设计与实现

在远程教育中，学生空间位置相对分散，实验教学大多数采用观看视频的方式进行，学生很少有亲手实验的机会，这使得实验教学的效果大打折扣。VRML技术提供网上的、三维的、可交互的虚拟实验方法，异地的学生能够通过连网的计算机远程亲手做实验。文中介绍了VRML技术特征，并以心理学实验为例，提出了虚拟实验展开的方式。将虚拟实验分为实验准备，交互实验和结果反馈三个阶段，具体介绍了每个阶段要达到的目的、使用的技术和实现的方法。设计的结果达到了教学的目标。     

用虚拟仪器对多相催化反应的改进

用先进的虚拟仪器进行多相催化反应，从仪器技术方面对多相催化反应方法进行改进，用“多点”检测方法进行多相催化反应，具体研究了Ni/Al2O3催化剂上温度对甲烷催化部分氧化制合成气反应性能的影响。研究结果的正确性说明用虚拟仪器做多相催化反应实验，既实现了实验界面化，又使得实验便于控制，从而缩短了实验时间，提高了实验效率。     

基于Web的化工原理虚拟仿真实验系统

为了提高实验安全性，实现化工原理课程的网络化教学，运用虚拟仿真技术和多种图像、动画表现形式构造了常规虚拟实验设备模型，设计了相关实验过程，开发了专用实验数据处理与绘图模块，结合CAT(Computer Aided Test)理论和人工智能方法研究了实验操作过程的自动评判技术。实践证明，虚拟设备能再现各种实验场景，仿真实验过程，实验系统能在人机交互条件下训练用户组装实验设备、进行实验操作和测取实验数据，并自动评判实验成绩。     

基于分类器联合的联机图形识别方法研究

研究基于不同模式特征的多分类器联合问题，提出一种新的分类器联合方法，将该方法应用于联机几何图形的识别，实验中联合了3种分类器，每种分类器的机制各不相同，并且都基于不同的模式特征，将该分类器联合方法与现有的几种联合方法进行实验比较，实验结果表明该方法具有较高的识别率。     

单机网格应用系统开发实验方法

针对网格应用系统开发实验过程中的困难，提出了一种通过在单机环境中利用虚拟机技术构建网格原型实验系统，对网格应用软件进行实验的方法，已申请国家发明专利(申请号：200510018916.0)。与各种同类实验方法相比，该方法操作简单、成本低廉，所得到的实验结果真实可信，所构建的单机网格原型实验系统具有高度的灵活性和可靠性，易于维护和管理，并能迅速地迁移到真实应用环境中。     

利用MATLAB辅助自动控制原理实验

本文以实例详细介绍了利用MATLAB软件辅助自动控制原理实验的方法。该方法大大提高了实验效率、改善了实验效果，既调动了学生的积极性和创造性，又培养了学生的分析、设计和调试自动控制系统的能力，解决了现阶段各高校学生人数多，仪器少的问题。     

基于人工神经元网络的移动机器人导航研究

本文采用人工神经元网络模型，提出了一个基于行为的移动机人导航方法，并在仿真实验系统上进行了实验研究，取得了令人满意的结果，这是一种前有前途的导航方法。     

同态滤波在图像角点提取中的应用

针对图像分割中角点提取对图像增强的要求，探讨了同态滤波图像增强技术，研究了同态滤波在频域中的实现方法，同时探讨了其在时域中的对应形式，并且实现了基于小波变换的同态滤波。通过实验验证了算法的有效性，给出了实验分析和结论。实验结果表明，对图像采取同态滤波增强方法，可以增强图像角点提取的准确性。     

Load mapping for seamless interface between hydrodynamics and structural analyses

This paper addresses the problem of a seamless interface between hydrodynamics and structural analyses. A pressure distribution on a hydro model computed from seakeeping analysis needs to be transferred to a structural model for evaluating structural strength and its integrity. However, due to the differences in the computation and representation methods for both analyses, the load on the hydro model may not be correctly transferred to the structural model, leading to a different load distribution on the structural model and resulting in some unbalanced force and moment components. In this paper, a method is proposed to solve this problem. A pressure distribution on the hydro model is mapped on the structural model through projection, and force and moment imbalances on the structural model are eliminated through optimization of the nodal forces on the structural model. Moreover, a viscous force distribution along the center of each member of the hydro model is transferred to the nodal forces on the structural model based on the minimum distance measure with resolving any force and moment imbalance. Examples are presented to demonstrate the validity of the proposed method.     

地铁站楼梯行人流交通特征的数据拟合分析

随着中国城市化水平的不断提高,行人在整个城市交通体系中的影响越来越大,越来越多的研究开始关注行人交通。但目前国内外对行人交通的研究都集中在水平步道上,尚没有对楼梯的行人流特征的研究,特别是缺少对大城市重要人流重要集散地的步行楼梯行人流特征的分析研究。通过对上海市赤峰路轻轨车站、上海人民广场地铁站和上海火车站地铁站等几个重要的行人集散地的楼梯行人流的特征调查,以定性分析为基础得到楼梯行人流的密度－速度、密度－流率的函数关系类型,并采用Matlab等软件进行函数拟合,得到换乘枢纽的行人流特征函数及楼梯行人流特征模型。为合理设置换乘枢纽内楼梯设施,提高楼梯的通行能力,更好组织行人流提供依据。     

Experimental studies on passive dynamic bipedal walking

Passive dynamic walking is a gait developed, partially or in whole, by the energy provided by gravity. The research on passive dynamic bipedal walking helps create an understanding of walking mechanics. Moreover, the experimental passive dynamic research provides a base to compare and validate computer simulation results. An improved kneed bipedal walking mechanism was designed and built to study the passive gait patterns. The first aim of this study is to determine the equivalency of testing a passive dynamic biped walker on a treadmill to testing on a ramp. Based on the small difference between the gait patterns measured on the two test platforms, testing on a treadmill was found equivalent to testing on a ramp. Gait measurements were then conducted on the treadmill to evaluate the effects of the treadmill inclination angle, mass distribution of the biped, and the length of flat feet on the gait pattern. Results show that most of these parameters had significant effects on the step length, step period and hip velocity of the passive walker. Our experimental results are also compared with previous experimental results.     

Assessment of anti-slip devices from healthy individuals in different ages walking on slippery surfaces

The interest for effective preventive strategies for slips and falls is growing. Much remains to be done, however, to prevent slips and falls in the traffic environment. Using an appropriate anti-slip device may reduce the risk of slips and falls on different surfaces outdoors during winter. The aim of this study was to evaluate the best anti-slip devices of different designs in the Swedish market on a larger group of healthy individuals in different ages on five different slippery surfaces as a way to develop a standard method to test anti-slip devices. Three different designs of anti-slip devices: heel device, foot-blade device and whole-foot device were evaluated on ice surfaces uncovered or covered with gravel, sand, salt or snow. The evaluations were done according to subject's perceived walking safety and balance, videorecordings of walking postures and movements, time to take on and off each anti-slip device, advantages/disadvantages with each anti-slip device and a list of priorities for own use according to three criteria: safety, balance and appearance. The heel device was perceived to be the most safe on all five surfaces, followed by the toe device and the whole-foot device. The heel device was also perceived to be the one with the best walking balance on uncovered ice and on snow covered ice. There were some significant differences due to gender and age. Most subjects walked with a normal muscle function in the hip and knee when walking with or without an anti-slip device on all surfaces. The heel device was perceived as the most rapid one to take on and the toe device as the most rapid one to take off. All three devices were perceived as having a good foothold. The heel device was perceived to fit the shoe and to be stable at heel-strike. The toe device was easily portable and stable on uncovered ice. The whole-foot device was comfortable to walk with and safe on snow covered ice. The heel device had the highest priority according to walking safety, walking balance and choice for own use.     

赋值:物理对象上的操作

研究了命令式程序的形式语义。赋值被看成当作物理对象的变量上的操作。变量x一方面是个可以容纳数据值的物理对象,另一方面当它出现在数学表达式中时又代表它所容纳的值。作为物理对象,变量x允许它的值用读/写操作来观察或改变,读操作则是写操作的逆操作。事实上赋值就是对物理对象施加写操作。提出了与单变量赋值、多重赋值、顺序赋值及条件赋值等相对应的操作,提出了这些操作应服从的公理,并给出了用这些公理证明程序性质的实例。     

基于桥梁用户的多社交网络影响最大化

单社交网络影响最大化问题已经得到了学术界的广泛关注与研究,然而如今多社交网络之间呈现信息互通的趋势.多社交网络中存在的桥梁用户（Bridge User,BU）（即同时拥有多个社交网络账户的用户）,可将信息从一个社交网络分享至另外一个社交网络,信息传播不再局限于单个网络.本文针对多社交网络信息影响最大化进行了相关研究,分析了桥梁用户在多社交网络信息传播中的作用,提出了基于桥梁用户的多社交网络聚合算法,并在得到的聚合图上对多社交网络影响最大化问题进行求解.仿真实验对多社交网络影响最大化问题进行了求解,并证实了桥梁用户在多社交网络信息传播时的作用.     

启发式算法设计中的骨架分析与应用

骨架是指一个NP-难解问题实例的所有全局最优解的相同部分, 因其在启发式算法设计中的重要作用而成为该领域的研究热点. 本文对目前骨架及相关概念的研究成果进行了全面综述, 将骨架本身的研究工作归纳为三个层面: 理论基础层面主要考虑骨架与计算复杂性的关系问题; 应用基础层面主要考虑如何高效地获取骨架; 应用层面主要考虑如何利用骨架进行高效启发式算法设计. 在此基础上, 本文详细讨论了骨架研究亟待解决的难题, 并指出了解决这些问题的努力方向.     

The effects of organizational learning environment factors on e-learning acceptance

Workplace learning is an important means of employees’ continuous learning and professional development. E-learning is being recognized as an important supportive practice for learning at work. Current research on the success factors of e-learning in the workplace has emphasized on employees’ characteristics, technological attributes, and training design elements, with little attention to workplace contextual effects. The study aims to investigate the impacts of organizational learning environment factors, including managerial support, job support, and organizational support, on employees’ motivation to use a workplace e-learning system. A model was proposed based on the expectancy theory of training motivation and the social influences and facilitating conditions in technology acceptance models. The model was tested on sample data collected from mainland China using Structural Equation Modeling and Moderated Structural Equation Modeling. The results suggested that employees’ perceived managerial support and job support had a significant impact on their perceived usefulness of the e-learning system for individual learning, and that perceived organizational support had a significant influence on the perceived usefulness of the e-learning system for social learning. Perceived usefulness for individual learning was found to completely mediate the environmental influences on individuals’ motivation to use the system, while perceived usefulness for social learning made partial mediation in the effects of the environmental factors on intention to use. In addition, perceived job support was found to have moderating effects on the relationship between employees’ perceived usefulness of the e-learning system and their intention to use the system. Consistent with previous findings, employees’ perceptions about the usefulness of the e-learning system have significant effects on their intention to use the system in the work setting.     

相关集的数据关联描述及实例讨论

为了讨论数据关联问题,按层次对数据集进行了粒化,引入了每一粒的相关集,产生了与相关集类关联的分层粒化结构,并称之为粒化树。进而以同一数据集上的两棵粒化树为结构支撑,完成了对数据关联的定义,使相关集之间数据的关联得以数值化表示,形成了数据关联的数值描述方法。对此的研究确定了数据关联的等价条件,以此为依托并通过实例探究了数据关联的相关性质,讨论了关联的紧密程度、数据的粒化等同、关联的相互比较等数值化的处理方法。同时为实例的讨论提供了算法编程的基础,表明了数据关联研究的实际意义。