DC＋＋：具有分布并行机制的C＋＋

ＤＣ＋＋是一种具有分布并行设施的面对向对象编程语言。它是由面向对象语言Ｃ＋＋向上兼容扩充得到的。本文介绍ＤＣ＋＋语言的设计与实现。     

MicrosoftC／C＋＋和BorlandC＋＋编程环境比较

本文从ＭｉｃｒｏｓｏｆｔＣ／Ｃ＋＋和ＢｏｒｌａｎｄＣ＋＋在编程环境，编程工具，内存模式，关键字，浮点数结构等方面的详细比较，旨在为程序员提供一些资料，帮助编程环境转换。     

V2C＋＋——一个用C＋＋实现的VHDL翻译型模拟器

由于面向对象的Ｃ＋＋语言更贴近描述硬件对象的ＶＨＤＬ语言Ｃ＋＋实现翻译型ＶＨＤＬ模拟器，并利用Ｃ＋＋本身的编译器的优化功能，可以得到运行的时间和空间方面效率较高的ＶＨＤＬ模拟器，Ｖ２Ｃ＋＋的原型设计和初步实践表明，用Ｃ＋＋实现ＶＨＤＬ翻译性模拟器比解释性模拟器具有较高效率，利于较大规模的电路的模拟。     

C^＋＋中＋＋运算符重载的研究与设计

本文对Ｃ＾＋＋中的＋＋（－－）运算符的重载进行了深入研究，对于有序可数的离散事件，提出了一套应用＋＋（－－）运算符求后继的方法，以素数和Ａｃｋｅｒｍａｎｎ函数为例，探讨了＋＋（－－）运算符的前缀形式和后缀形式的重载技巧，并给出了类定义实例。     

Microsoft Visual C＋＋4.0特色一二

C或者C＋十是当今最为重要的编程语言，其作为开发工具一向是大软件厂商的必争之地。以往BOrland的产品总被公认略胜一筹。但自93年推出VisualC＋十以来，Microsoft渐渐地占了上风，进入96年后，Microsoft又接踵推出了VC＋＋4．0、4．正和4．2版本，使它的竞争优势进一步得到了加强。下面介绍的VC＋＋4．X版的新功能，虽然只是其中的一部分，但仍能对它的强大功能有所了解。DeveloperStudio——既熟悉又陌生的开发环境VC＋＋4．0的最大变化莫过于它采用了一个独立于VC＋＋，又与VC＋十紧密集成的新开发环境，即DeveloperStudio。…     

VC＋＋程序设计教学探讨

笔者结合自己的实际教学经验,对VC＋＋程序设计语言课程的教学进行了比较深入的探讨。     

从C到C＋＋关于C＋＋程序设计特点的探讨

通过对Ｃ＋＋特点的分析，说明Ｃ＋＋程序设计的核心问题是“类”的设计，要充分利用Ｃ＋＋这方面的优势。     

C^＋＋信息抽象系统

本文描述了一个用于分析Ｃ＾＋＋程序结构的系统。该系统根据关系模型从Ｃ＾＋＋程序中提取出各种关系信息并将其存贮到数据库中供分析源程序之用。借助该系统构造了一个Ｄｅｍｅｔｅｒ／Ｃ＾＋＋法则的检测工具。     

谈谈C＋＋对C的增强

本文结合自己的实践，主要从非面向对象和面向对象两方面讨论Ｃ＋＋对Ｃ的增强，与Ｃ＋＋爱好者一起探讨。     

DPC—C＋＋语言的并发性实现

ＤＰＣ－Ｃ＋＋语言是一个支持分布式应用程序设计的面向对象的并发程序设计语言，本文侧重介绍了ＤＰＣ－Ｃ＋＋语言的并发性实现及其程序模型，并简要给出其运行支持系统的设计。     

因素空间与可拓学的互补性分析及问题处理融合模型

问题智能处理是人工智能领域具有挑战性和交叉性的课题。大数据与人工智能技术背景下,为了给具有较高普遍性的开放性问题求解提供新的理论支撑,对因素空间与可拓学做了对比分析,发现两者具有共同的数学基础,在问题智能处理等研究方向有交叉性和互补性。以面向问题处理的融合模型为例,论证了可拓学与因素空间交叉研究的基本路径及其可行性,提出了两者交叉研究的主要方向,阐明了实际应用的潜在优势及适用范围。该研究将有助于进一步提高问题处理的系统性、智能化水平,提高解决问题从不确定性、偶然性到必然性的程度,并将推动为智能科学服务的智能数学的发展。     

基于LAN的综合测试系统设计

针对新型号武器装备试验测试需求和靶场测试设备现状,研究基于LAN的综合测试系统设计;详细介绍了系统的组成与功能、IRIG-B码接口卡和采集器硬件设计方法,简要介绍了系统软件开发环境和软件结构;系统采用分布式结构和软件组件技术设计,通过对系统硬件资源和软件模块进行配置与组合,可构成功能不同、规模不等的专用测试系统;具有集中控制、分散测量、通用性强和操作简便等特点,可适应多种型号武器装备试验的测试需要。     

Transmission of vertical vibration through a seat: Effect of thickness of foam cushions at the seat pan and the backrest

The perception of vehicle ride comfort is influenced by the dynamic performance of full-depth foam used in many vehicle seats. The effects of the thickness of foam on the dynamic stiffness (i.e., stiffness and damping as a function of frequency) of foam cushions with three thicknesses (60, 80, and 100 mm), and the vibration transmitted through these cushions at the seat pan and the backrest were measured with 12 subjects (6 males and 6 females). With increasing thickness, the stiffness and the damping of the foam decreased. With increasing thickness of foam at the seat pan, the resonance frequencies around 4 Hz in the vertical in-line and fore-and-aft cross-axis transmissibilities of the seat pan cushion and the backrest cushion decreased. For the conditions investigated, it is concluded that the thickness of foam at a vertical backrest has little effect on the vertical in-line or fore-and-aft cross-axis transmissibilities of the foam at either the seat pan or the backrest. The frequencies of the primary resonances around 4 Hz in the vertical in-line transmissibility and the fore-and-aft cross-axis transmissibility of foam at the seat pan were highly correlated. Compared to sitting on a rigid seat pan with a foam backrest, sitting with foam at both the seat pan and the backrest reduced the resonance frequency in the vertical in-line transmissibility of the backrest foam and increased the associated transmissibility at resonance, while the fore-and-aft cross-axis transmissibility of the backrest was little affected. Compared to sitting without a backrest, sitting with a rigid vertical backrest increased the resonance frequency of the fore-and-aft cross-axis transmissibility of the seat pan cushion and increased the transmissibility at resonance.Relevance to industryThe transmissibility of a seat is determined by the dynamic properties of the occupant of the seat and the dynamic properties of the seat. This study shows how the thicknesses of foam at a seat pan and foam at a backrest affect the in-line and cross-axis transmissibilities of the foams at the seat pan and the backrest. The findings have application to the design of vehicle seats to minimise the transmission of vibration to the body.     

基于网络的作业管理系统的实现

本文以学生作业管理系统的设计及实现过程为中心,简单介绍了此系统的目标及意义,同时较详细的介绍了JSP技术及本系统的开发环境。进入系统设计阶段后,按照软件工程的方法进行了需求分析(主要由数据流图及数据字典组成)和概要设计(主要包括系统功能模块图及其描述),在进行详细设计之前,着重阐述了系统实现过程中将要遇到的技术难点及分析解决方案。系统实现的叙述主要是通过对实际JSP页面的逻辑框图结构及对其具体实现功能的描述来完成的。     

基于可决系数的自适应关联规则挖掘算法

针对以频繁项集产生?规则产生为核心的两阶段关联规则挖掘,存在需要人工以先验知识指定最小支持度和最小置信度阈值的缺陷。本文提出以支持数和置信度为依据,采用曲线拟合技术,根据可决系数自动确定曲线的次数及对应多项式的算法AARM_BR(Adaptation Association Rule Mining Based on Determination Coefficient R²),从而确定支持度和置信度阈值。在标准数据集Trolley和Groceries上进行关联规则挖掘实验,结果表明本算法更具有数据依赖性,在用户不具备先验知识的情况下,无须人为指定多项式阶次、支持度和置信度阈值的优点。     

心血管病人出入量记录误差控制技术研究

由于传统程序人工操作过多,导致出入量记录误差较大,无法满足临床工作需求,提出了心血管病人出入量记录误差控制技术。充分考虑语言使用环境,选择C++作为程序编译语言构造新词素,实现程序的动态编译。根据动态编译结果,集合全部数据,分析出入量记录结构,确定各个结构之间的逻辑关系,改善人工操作方式。以该结构逻辑关系为基础设计误差控制界面,为出入量记录数据与处理提供快捷误差控制界面和必要图表。由实验结果可知,该设计方法成功避免了人工记录出现误差的行为,使程序最高运行效率达到92%,能够满足临床工作需求。     

基于纹理映射的动态实时虚拟现实方法

提出了一种动态实时的进行纹理映射的方法,该方法首先通过自动寻找三维旋转模型主中轴线来与纹理图片的中垂线进行配准,然后沿左右方向进行纹理保长等单位映射.该方法可将纹理图片等单位的映射到三维模型上,同时可以进行模型修正和纹理图片的动态移动,纹理不会变形,这完全不同于其它指定多边形及相应纹理坐标进行插值的纹理映射方法,后者将无法与用户进行交互且无法动态贴图.实现结果表明,该方法很好地模拟了现实世界的贴图效果,且具有很好的灵活性、实用性和通用性,可以应用到陶瓷贴花的虚拟现实软件中,进行提前演示效果.     

一种保护青少年脊柱健康的减重背包设计与研究

目前市面上的青少年背包主要通过肩部来进行载荷,而忽略了腰部载荷的作用。背包长期负重 不当会影响脊柱生长。为了平衡肩部、腰部和臀部的载荷,设计一种通过臀部带和弹性杆结构改变重力传递方 式的减重背包。首先对人体背包进行生物力学分析,提出设计方案;然后借助 ADAMS 对传统背包与减重背包 在平地、上坡、下坡 3 种路况下进行人体肩部、腰部和臀部载荷的动力学仿真,并利用 MATLAB 对 2 种背包 的肩部、腰部和臀部的力矩进行分析。结果表明减重背包减轻了肩部 6.1%和腰部 5.4%力矩;减重背包肩部力 矩与腰臀部合力矩的比值是 4.17,而传统背包的比值是 6.58。减重背包减少了肩部和腰部的载荷,同时发现肩 部力矩与腰、臀部合力矩的比值越小,转移到臀部的力矩越大,背包的平衡性越好,表明了减重背包优于传统 背包。     

Structural properties and poles assignability of LTI singular systems under output feedback

This paper studies the structural properties of both finite poles and the infinite pole of linear time-invariant singular systems under output feedback. Three main problems are studied, namely, (1) the algebraic structures of both finite poles and the infinite pole; (2) the assignability of finite poles and the elimination of the infinite pole by output feedback; and (3) the controllability and observability of the system with minimal number of inputs and outputs. New generic solutions to these problems are presented in terms of some new concepts defined in this paper including the geometric multiplicity of the infinite pole, the finite and impulsive output feedback cycle indices of the system. Determination of these multiplicities and indices are discussed. An assignability equivalence is established between the variable finite poles and the poles of a controllable and observable non-singular system. The number of the independent infinite poles that can be reduced is given in terms of the system matrices. The minimal number of inputs and outputs that guarantee controllability and observability are shown to be the output feedback cycle indices.     

Interface as Exordium: The Rhetoric of Interactivity

In this article, I outline how the interface of new media functions rhetorically as an exordium to engage users and to dispose them to persuasion. The modular, networked, and interactive nature of new media requires an interface: a central place of interaction for the technological, human, social, and cultural aspects of new media. I propose that the interface functions rhetorically through three modes of interactivity, including multi-directionality, manipulability, and presence. By understanding these modes of interactivity and how they function to create various degrees of interaction and engagement, we can begin to develop the analytic tools needed to increase critical awareness of the interface. A rhetorical understanding of the interface enables us and our students to see that the shape and design of the interface is not natural and inevitable. The design of the interface is a design of human experience and, as such, the interface becomes a locus of power. The modes of interactivity it deploys are capable of enabling empowerment and enacting rhetorical patterns of control.