基于UDP协议的监控数据传输框架

为实现对设备的分布式监控，结合开发实际，文中提出了一种基于UDP协议的监控数据传输框架。通过对角色和监控数据的分类，总结出在分布式监控系统中的数据传输格式，并结合具体编程环境讨论了数据处理流程和一些注意点。应用表明，该框架稳定可靠，并具有一定的通用性。     

热工数据测控平台的开发和研究

通过对传统的热工数据测控平台构建过程中存在的问题进行描述,结合当前的计算机、网络技术的发展。提出了一种基于分层、模块化的分布式数据测控平台构建方案,有效地减少了测控系统构建过程中不必要的重复开发。此外．对平台的几个主要技术特点,包括分布式数据库、数据处理方式资源化、数据智能分析、网络安全措施等也进行了介绍．并给出了相应的解决方法。结论部分介绍了以该方案为基础构建的平台的运行状况,并对平台的发展趋势做出了预测。     

输弹机构虚拟样机的校核、验证及故障行为确认

提出了虚拟样机仿真试验中应进行的VV＆A工作。仿真必须经过校核、验证和确认(VV＆A)才能证实其具有一定的可信度,数字仿真在数学模型(方程组)的简化和转化为计算程序的过程中引入的误差会使仿真可信度降低,因而有许多关于VV＆A的讨论和推荐的一些VV＆A方法。基于虚拟样机的仿真与数字仿真有质的不同,如何开展VV＆A工作鲜有提及,实践中一些虚拟样机仿真因未进行VV＆A工作使仿真失去意义。该文案例在虚拟样机仿真的各个阶段都进行了VV＆A工作,,保证了仿真结果的可信度。     

建模与仿真VV&A相关概念、定义和术语研究

在国外,尤其是美国,建模与仿真(ModelingandSimulation,M＆S)及校核、验证与确认(Verification,ValidationandAccredi tation,VV＆A)相关概念、定义和术语的研究已趋于成熟。我国目前在该领域的研究仍是空白。通过研究国内外大量相关资料,深入分析了建模与仿真VV＆A概念、定义和术语研究的重要意义;根据建立定义和术语的一般原则,为部分概念撰写定义,并赋予每个概念指称,同时也分析了常见的一些不恰当的术语。这不仅有助于人们对建模与仿真VV＆A概念性研究引起重视;而且也有助于人们进行建模与仿真VV＆A相关概念、定义和术语的研究。     

一种基于 CNN 和人体椭圆轮廓运动特征的 摔倒检测方法

为了解决传统的使用几何特征检测摔倒的方法的不稳定、难于区别一些相似的活 动等问题,提出了一种基于卷积神经网络(CNN)和人体椭圆轮廓的运动特征的摔倒检测方法。 首先,使用高斯混合模型检测出人体目标并求出其最小外接椭圆轮廓。然后在每一帧的椭圆 轮廓中提取出长短轴之比、方向角和人体质心的竖直方向速度,融合成一个基于时间序列的 运动特征。最后,经过一个浅层的 CNN 对这些运动特征进行训练,用于摔倒判断,并区分相 似的活动。实验结果表明,本文方法和现有的方法相比,克服了几何特征的不稳定性,提高 了检测率。     

基于LabVIEW的某型导弹教学训练仿真系统

文章对某大型导弹教学训练仿真系统的设计思想、硬件组成和软件设计进行了阐述，讨论了基于LabVIEW软件平台开发教学训练仿真系统的关键技术问题。实践证明该仿真系统的设计方案可行，且功能全、成本低，LabVIEW软件在教学训练仿真开发方面有突出的优势。     

计算机辅助拓扑设计 ——持续同调在几何设计和处理中的应用

持续同调是一种计算不同尺度拓扑特征的有效方法。其从一簇向后包含的单纯复形序列中提取 出拓扑特征的出现和消失时刻,并使用拓扑特征的“生命周期”来量化地衡量该特征的几何尺度和重要程度。拓 扑特征的提取与应用在几何设计中扮演着重要角色,催生出了一些基于持续同调的几何设计研究。从持续同调 特征的提取与基于持续同调的建模和优化两方面进行综述,在持续同调特征的提取方面,介绍了从点云和三角 网格数据中提取拓扑特征的不同方法,总结了拓扑特征在部分几何设计问题中的应用路径。在建模和优化方面, 综述了基于拓扑变换的单纯复形重建方法、拓扑可感知的曲面重建方法与基于持续同调的拓扑去噪和优化 方法。     

感性工学中的参数化设计方法关键技术研究现状与展望

 感性工学(KE)是将消费者感性体验融入设计中的常用方法。过去十余年间,国内 外学者对 KE 展开了研究并取得了一定成果。通过对国内外 KE 中的参数化设计方法关键技术 研究成果进行梳理,首先总结了 KE 中常用的感性意象与产品特征参数化方法;随后重点介绍 了 3 种 KE 模型构建问题上的常用方法及其特点,并将现有研究进行了对比;最后讨论了 KE 现存问题并对未来可能的研究趋势进行了展望。     

Coherence checking and propagation of lower probability bounds

 In this paper we use imprecise probabilities, based on a concept of generalized coherence (g-coherence), for the management of uncertain knowledge and vague information. We face the problem of reducing the computational difficulties in g-coherence checking and propagation of lower conditional probability bounds. We examine a procedure, based on linear systems with a reduced number of unknowns, for the checking of g-coherence. We propose an iterative algorithm to determine the reduced linear systems. Based on the same ideas, we give an algorithm for the propagation of lower probability bounds. We also give some theoretical results that allow, by suitably modifying our algorithms, the g-coherence checking and propagation by working with a reduced set of variables and/or with a reduced set of constraints. Finally, we apply our algorithms to some examples. RID="*" ID="*" This paper is a revised and substantially extended version of a previous paper by the same authors, appeared in the Proc. of the 5th Workshop on Uncertainty Processing (WUPES'2000), Jindřichu̇v Hradec, Czech Republic, June 21–24, 1–13, 2000.     

一种基于名字的可移动即插即用网络

计算机网络给用户带来了很大的方便，但是，在目前仍然存在着配置复杂，不能够有效满足用户移动计算的需求等问题，虽然IPv6为解决上述问题提供了一定的机制，但是仍然存在一些问题，本文在IPv6基础上结合DNS和移动计算技术，提出了一种基于名字的可移动即插即用网络技术，并就其中可能出现的三种安全性问题提出了相应的解决方案，它具有主机的即插即用，可移动性和更安全等特点，原理性实验表明这种技术是可行的。     

A guide to agile development of interactive software with a “User Objectives”-driven methodology

This paper presents the InterMod methodology. By combining the widely accepted Agile Methods, Model-Driven Developments and User-Centred Design it allows us to develop high-quality interactive applications. As a main characteristic, it plans and organises the software project as a series of iterations that are guided by the User Objectives in an agile and user-centred manner. At each iteration, the software development work can be distributed to different teams according to some developmental and integration activities. Each activity is driven by models that are validated by a multidisciplinary team composed of developers and users. The requirements are incrementally collected and formalised by means of models based on user-centred design. Besides, the Semantically Enriched Human–Computer Interaction model is proposed to speed up project validation. This model enriches a human–computer interaction model with some visual characteristics and the application semantic. Thus, the enriched model provides enough information to generate prototypes so users and developers can easily validate this model. Diagram project is a real case study that is used to illustrate the application of the InterMod methodology through the whole paper.     

以给定的三次Bézier曲线为边界测地线的双三次Bézier曲面构造

曲面上的测地线是曲面上一类重要的曲线。测地线在计算机可视化、图像处理、 服装设计等领域均有广泛应用。该文利用一条曲线为所在曲面的测地线当且仅当它的从切面与 该曲面在这条曲线上的切平面重合这一论断,做了以下工作：对给定的三次Bézier曲线,构造 双三次Bézier曲面,使该曲面以给定的曲线为其边界测地线;讨论了具有给定测地线的组合双 三次Bézier曲面的连续性拼接问题;为了说明所给方法的有效性,给出了几个数值实例。     

An effective approximation algorithm for the Malleable Parallel Task Scheduling problem

The Malleable Parallel Task Scheduling problem (MPTS) is an extension of one of the most classic scheduling problems (P∥C_max). The only difference is that for MPTS, each task can be processed simultaneously by more than one processor. Such flexibility could dramatically reduce the makespan, but greatly increase the difficulty for solving the problem. By carefully analyzing some existing algorithms for MPTS, we find each of them suitable for some specific cases, but none is effective enough for all cases. Based on such observations, we introduce some optimization algorithms and improving techniques for MPTS, with their performance analyzed in theory. Combining these optimization algorithms and improving techniques gives rise to our novel scheduling algorithm OCM (Optimizations Combined for MPTS), a 2-approximation algorithm for MPTS. Extensive simulations on random datasets and SPLASH-2 benchmark reveal that for all cases, schedules produced by OCM have smaller makespans, compared with other existing algorithms.     

以经营的理念和精品意识打造《计算机实用技术》军队优质课程

课程建设是院校教学的中心,本文以建设军队优质课程为目标,全面贯彻"向实战聚焦,向部队靠拢"的教学改革思想,在教学内容改革、教学方法创新、教学资源信息化建设等方面积极研究、探索、实践,取得了一些标志性成果,具有一定的首创性和较强的系统性、先进性,为军队院校提高任职教育课程建设水平、深化任职教育改革提供了借鉴。     

Extended optimality in topology design

Most existing studies of 2D problems in structural topology optimization are based on a given (limit on the) volume fraction or some equivalent formulation. The present note looks at simultaneous optimization with respect to both topology and volume fraction, termed here “extended optimality”. It is shown that the optimal volume fraction in such problems — in extreme cases — may be unity or may also tend to zero. The proposed concept is used for explaining certain “quasi-2D” solutions and an extension to 3D systems is also suggested. Finally, the relevance of Voigt’s bound to extended optimality is discussed.     

Maps and isometries between indistinguishability operators

 In this paper, some geometric aspects of indistinguishability operators are studied by using the concept of morphism between them. Among all possible types of morphisms, the paper is focused on the following cases: Maps that transform a T-indistinguishability operator into another of such operators with respect to the same t-norm T and maps that transform a T-indistinguishability operator into another one of such operators with respect to a different t-norm T ^′. The group of isometries of a given T-indistinguishability operator is also studied and it is determined for the case of one-dimensional operators, in particular for the natural indistinguishability operators E _T on [0, 1]. Finally, the indistinguishability operators invariant under translations on the real line are characterized.     

MVC模式在储粮害虫查询与防治系统中的应用研究

首先分析了目前流行的MVC模式的工作原理和性能特点；然后基于MVC和浏览器／服务器（B／S）多层体系结构，在J2EE开发环境下采用JSF、Servlet、EJB等核心技术进行储粮害虫查询与防治系统的框架设计。     

On the probability theory on MV algebras

 The paper contains a review of some results concerning probability theory on MV algebras (laws of large numbers, central limit theorem, martingale convergence theorem). Also some algebraic and methodical aspects are discussed.     

浅谈炼油化工生产运行系统的现状与进展

炼油化工生产运行系统是运行在炼油与化工生产企业的信息系统，用于支持生产计划与排产、运行管理、生产执行和生产统计等业务领域。本文介绍了世界石油市场所发生的变化，分析了石油企业面临的内外部环境。介绍了炼油化工企业在生产运行领域应用信息技术的情况和进展，以及领先企业在生产运行系统的最佳实践。     

对虚拟模型尺寸测量方法的探索

在分析模型测绘实践教学现状的基础上,根据模型测绘训练的特点拟定 了模型测绘尺寸测量的三种模式,探究了基于eDrawings 浏览器的虚拟模型测绘尺寸测量的 具体实现方法,并在“工程图学”的教学实践中得以应用。为模型测绘实践教学提供了切实可 行的虚拟模型测绘方法和应用实例,对加强培养、训练学生的模型测绘实践能力、动手能力 提供了重要的方法和途径。