产品技术经济综合评价原型系统

在层次分析法的基础上，提出了一种将TOPSIS法和AHP法进行融合的综合评价方法．此方法可对产品进行全面的技术经济综合评价，为企业进行决策提供依据，使产品研制建立在一个更加客观的量化分析基础之上．结果表明，这种方法科学合理、简明方便，能够处理多层复杂问题，为产品技术经济综合评价提供了思路，具有普遍意义，能推广应用于其他领域的评估．     

从60 MeV/u18O离子辐照过的钍中分离Ra

对以^212Pb,^133Ba和^224Ra比作示踪剂，（NH4）2H2EDTA为淋洗剂，用阳离子交换法从Pb、Ba中分离Ra的工艺条件做了研究。提出了一个从60MeV／u ^18O离子辐照过的ThO2靶中分离Ra的放射化学流程。实验结果表明，该流程对主要反应产物，特别是Ba的去污较好，Ra的产额可达70％以上。     

Neural network approach for multicriteria solid transportation problem

In this paper, we propose neural network approach for multicriteria solid transportation problems(STP). First we suggest a neural network architecture to solve single-objective STP according to augmented Lagrange multiplier method. Due to the massive computing unit-neurons and parallel mechanism of neural network approach can solve the large scale problem efficiently and optimal solution can be got. Then we transform the original multicriteria problem into a single objective problem by global criteria method and adopt the neural network approach to solve it. By this way we can get the satisfactory solution of the original problem. The procedure and efficiency of this approach are shown with numerical simulations.     

用富集培养技术分离具有PAL活性的酵母菌

为获取具有ＰＡＬ活性的菌株，设计了从天然源分离酵母菌的定集培养技术，并从中国西南地区采集２０个样品中得到菌株１４０余株，结果表明本富集培养技术用于从天然源分离具有苯丙氨酸解氨酶活性的菌株是有效、可行的。     

计算机会议流控制通道协议研究

目前同步计算机会议系统控制方面的能力有限，本文提出了一种会议控制协议，基于开放分布式处理参考模型控制通道概论，在分析协议需求的基础上，设计了一种组合域名协议原语，并用于协议的形式化描述，同时采用带时间和控制的有色Ｐｅｔｒｉ网描述了控制协议实体以进行协议的验证。文章最后简述该协议的设计和实现。     

基于应用网关的防火墙安全系统的设计与实现

文中给出了一和中基于应用网关的防火墙安全系统的设计与实现的方法。重点介绍了系统安全策略以及所采用的分组滤波，基于ＩＰ层的 密这两种主要技术。     

Chain Vibration and Dynamic Stress in Three-Dimensional Multibody Tracked Vehicles

A three-dimensional computational finite element procedure for the vibration and dynamic stress analysis of the track link chains of off-road vehicles is presented in this paper. The numerical procedure developed in this investigation integrates classical constrained multibody dynamics methods with finite element capabilities. The nonlinear equations of motion of the three-dimensional tracked vehicle model in which the track link s are considered flexible bodies, are obtained using the floating frame of reference formulation. Three-dimensional contact force models are used to describe the interaction of the track chain links with the vehicle components and the ground. The dynamic equations of motion are first presented in terms of a coupled set of reference and elastic coordinates of the track links. Assuming that the structural flexibility of the track links does not have a significant effect on their overall rigid body motion as well as the vehicle dynamics, a partially linearized set of differential equations of motion of the track links is obtained. The equations associated with the rigid body motion are used to predict the generalized contact, inertia, and constraint forces associated with the deformation degrees of freedom of the track links. These forces are introduced to the track link flexibility equations which are used to calculate the deformations of the links resulting from the vehicle motion. A detailed three-dimensional finite element model of the track link is developed and utilized to predict the natural frequencies and mode shapes. The terms that represent the rigid body inertia, centrifugal and Coriolis forces in the equations of motion associated with the elastic coordinates of the track link are described in detail. A computational procedure for determining the generalized constraint forces associated with the elastic coordinates of the deformable chain links is presented. The finite element model is then used to determine the deformations of the track links resulting from the contact, inertia, and constraint forces. The results of the dynamic stress analysis of the track links are presented and the differences between these results and the results obtained by using the static stress analysis are demonstrated.     

多媒体视频会议系统的关键技术研究

多媒体视频会议系统是近年来国际上将“视频图像、语音等多媒体信息数字处理”与“数字通信传输技术”最新成果相结合的产物，它集计算机的交互性、通信的分布性以及电视的真实性为一体，具有明显的优越性，因而成为当今计算机领域的一个研究热点。本文主要讨论了该系统的组成、原理及关键技术，尤其是图像压缩技术的研究。     

多版本技术中的对象标识及其压缩

协同编辑系统支持不同地域的协作者通过网络同时地编辑同一个文本或图形对象,其研究具有挑战性.介绍了协同图形编辑中的多版本技术,重点讨论了对象标识及其策略,给出所存在的问题.提出了一个全面的对象标识方案.该方案解决了以往方案不能处理具有依赖关系的操作和相同关系的操作的对象标识和系统维护问题.同时,随着编辑的进行和冲突的产生,对象标识会急剧膨胀,影响系统处理的效率,分析了对象标识压缩的规则,给出一个对象标识压缩方法,并对其有效性进行了分析.实例分析和实验结果表明,所提出的对象标识及其压缩方案提高了系统的效率.     

一种基于PI技术的并行自适应滤波结构

基于PI技术，在原多项式表示的并行处理结构基础上提出了一种新的并行自适应滤波结构。新结构的复杂度远远低于基于多项式表示的并行结构，与普通串行的自适应FIR滤波器相当，所以在保证数据通过率较高和系统功耗较低的同时，因为结构简单而更易于实现。MATLAB实验仿真运行结果表明新结构算法在收敛速度上明显优于前两者，从而为并行自适应实时处理提供了现实的可行性。