为了充分利用已有系统的数据资源和服务资源,建立一个扩展性好、资源占用 少、松散耦合、复用性强、维护方便的平台级或大型集成系统，文中提出了一种基于消息队 列软总线的系统集成方案，利用net程序集技术和C#语言的反射机制来构造“热插拨”数 据适配器,并将其编写成DLL程序集组件,从而实现异构（不同数据标准或格式）系统之 间有效的、方便的数据交换。该方案已应用于物流通关公共服务信息平台。

3D human motion analysis system is gaining more and more popularity and importance in sports training, game simulation and many other areas. Particle filter algorithm, as a powerful optimized method, can be applied to 3D human motion analysis system with more accurate results delivered and assured. An improved (hybrid) particle filter algorithm (IPFA) is proposed in this paper which integrates the advantages of partitioned particle filter algorithm (PPFA) with annealed particle filter algorithm (APFA). The results show that, the hybrid algorithm (IPFA) gives rise to more accurate results with less computational time consumed, compared to PPFA and APFA, and improves tracking efficiency and accuracy of 3D human motion substantially.

In this paper, an improved Lsb (Least Significant Bits) information hiding algorithm is proposed according to human visual theory and implemented in the temporal-spatial domain by using C#, and based on this, a system is developed for hiding and extraction of multimedia files, Compared with the traditional LSB method implemented by Matlab, the improved one has obvious advanlages in the environmental confguration requirements, the time-consuming in running and ease of use, To be specific, the system realized on, net platform takes less running time and resouces, has better extensibility and greatere ease-to-use, and other distinct features Besides, the system developed for hiding and extracting multimedia files based on the method has a wide range of adaptivity and good applicability.

A computer modelling method for the three-dimensionaldynamic analysis of liquid crystal display cells is presented. Themethod is based on a variational approach to the Oseen-Frank freeenergy formulation considering three elastic constants and uses avectorial representation of the director field. A simpler approximateform that uses only two elastic constants but is faster to operate isobtained as a by-product of the full three-constant modelimplementation. The modelling uses finite elements on a mesh oftetrahedral elements for the calculation of directors and electricpotentials while finite differences in time are used in the time steppingprocess. Comparisons are made with results from a 2D dynamicprogram using a tensor model giving good agreement.

We present a new formulation for the dynamicmodeling of twisted nematic liquid crystal display cells based on aconstant charge assumption instead of the commonly used "fixedvoltage" model. This formulation is based on a tensor representationof the director field, which is solved using a combination offinite-element and finite-difference methods. It allows the accuratemodeling of liquid crystal pixel cells in thin-film-transistor-drivenactive matrix displays, extensively used in flat panel computer andtelevision displays.