组合四角锥单元

在分析组合网架结构主要受力特点的基础上提出了一种简化计算方案，建立了组合四角锥单元计算公式，实践表明，用这种组合四角锥单元计算组合网架总体自由度少，占用内存小，计算工作量小，精度可以满足工程要求。     

转向蜗杆的等间距法编程

为变螺距，变直径的向蜗杆在加工中心上的加工提供了一种实可行的编程方法和加工程序，为提高进口零件的国产化率作了贡献，具有普遍的推广价值。     

LF半准开集的一种新定义

给出了一种新的ＬＦ半准开集定义，采用新的ＬＦ半准开集定义，较详细地研究了ＬＦ半准开集及半准连续函数的一些重要性质。     

室内空间与构成

构成是对实际的空间和形体之间的关系进行研究和探讨的过程，任何形体内部结构的发展或变化，都牵涉到所组成该结构的单元体数量，组构和变化方式。这些最基本的单元体的功能在于以点，线，面的基本形式隔离出某种空间，面点，线，面可以构成任何形体，也决定空间构成的形式美。     

空间框架与地基基础耦合分析新方法

以上部结构空间框架的子结构法同双参数弹性地基上筏式基础板的边界元法进行耦合。建立了以力和位移为未知量的混合法耦合。通过算例分析表明，本文的计算方法切实可行，具有计算容量小，计算效率高的显著特点。     

球面图及其在机械工程中应用的研究

本文针对机械工程中出现的复杂度较高的空间角度计算问题，提出了一种解决的新途径即球面图法，并着重分析了它的应用。     

Position estimation using principal components of range data

This paper describes a new approach to mobile robot position estimation, based on principal component analysis of laser range data. An eigenspace is constructed from the principal components of a large number of range data sets. The structure of an environment, as seen by a range sensor, is represented as a family of surfaces in this space. Subsequent range data sets from the environment project as a point in this space. Associating this point to the family of surfaces gives a set of candidate positions and orientations (poses) for the sensor. These candidate poses correspond to positions and orientations in the environment which have similar range profiles. A Kalman filter can be used to select the most likely candidate pose based on coherence with small movements.

The first part of this paper describes how a relatively small number of depth profiles of an environment can be used to generate a complete eigenspace. This space is used to build a representation of the range scan profiles obtained from a regular grid of positions and orientations (poses). This representation has the form of a family of surface (a manifold). This representation converts the problem of associating a range profile to possible positions and orientations into a table lookup. As a side benefit, the method provides a simple means to detect obstacles in a range profile. The final section of the paper reviews the use of estimation theory to determine the correct pose hypothesis by tracking.     

Discrete Adaptive Sliding Mode Control of a State-Space System with a Bounded Disturbance

This paper presents the discrete adaptive sliding mode control of a state-space system in the presence of a bounded disturbance. The delta form of the discrete state-space model is used as it closely resembles that of the continuous model. The control law takes into account of the effect of the disturbance by using its approximate value. The system behavior in the vicinity of the sliding surface is studied. It is shown that the adaptive controller leads to a stable closed-loop system. Also, simulation results are presented to illustrate the features of the proposed adaptive control strategy.     

On fuzzy sobriety

This paper mainly shows that sober fuzzy topological spaces form the epireflective hull of the fuzzy Sierpinski space in the category of T₀-fuzzy topological spaces.     

Group Decision Making on Urban Planning Using Desktop Multimedia Conferencing

Recent developments on multimedia systems and networking technology show that using desktop multimedia conferencing for group decision making on wide area networks such as the Internet is possible. In this paper we review the design, hardware and software requirements and organizational issues in a desktop multimedia conferencing system. We draw on our experiences from multiple multimedia conferences on the Internet and in particular we focus on a case study on urban planning using desktop multimedia conferencing on the Internet. Further we discuss implications for further research on desktop multimedia conferencing.