ITE温度变送器控件的开发及其线性化处理

介绍了采用VB开发ITE温度变送器控件的基本方法和信号转 换的两个线性化处理方案,解决了设计各仪表控件中的重点和难点——线性化输入问题。     

在VS2005中用C#编写Flash控件

利用VS2005可视化的编程工具,采用C#编程语言编写了一个通用的Web版本的Flash控件,详细介绍了C#控件编写的基本过程,重点介绍了控件的属性编写、html输出编写和设计时支持智能列表编写、文件信息修改、控件图标添加和嵌入资源中的图片调用等。     

VB中数据拟合与图形绘制方法(英文)

针对VB集成环境下进行数据拟合和曲线图绘制的问题,给出了三种处理方法:(1)直接编写代码;(2)调用MatrixVB库中的函数;(3)使用Measurement Studio的数据分析和绘图控件.给出了具体的方法和主要代码,并在一个指数曲线附近随机生成一系列数据并用这3种方法进行拟合与绘图.结果表明,调用MatrixVB库中的函数或使用Measurement Studio控件比直接编写代码简洁方便.     

基于Delphi的串口通信程序设计方法

概述了串口通信在现代科技领域中的重要地位,介绍了Delphi作为一种面向对象的可视化的高级编程语言在串口通信编程中的优缺点。分析归纳了利用Delphi语言编写串口通信程序的四种方法并且简单阐述了SPCOMM在Delphi环境中作为通信控件的一些属性、方法、函数和事件。最后以实践中编写的一个惯导计算机人机交互测试程序为实例,给出了在Delphi环境中利用SPCOMM控件实现串口通信时所遇到一些常见问题的解决方法、编写串口通信程序的大体框架结构和部分代码。     

基于Delphi的串口通信程序设计方法

概述了串口通信在现代科技领域中的重要地位，介绍了Delphi作为一种面向对象的可视化的高级编程语言在串口通信编程中的优缺点。分析归纳了利用Delphi语言编写串口通信程序的四种方法并且简单阐述了SPCODMM在Delphi环境中作为通信控件的一些属性、方法、函数和事件。最后以实践中编写的一个惯导计算机人机交互测试程序为实例，给出了在Delphi环境中利用SPCOMM控件实现串口通信时所遇到一些常见问题的解决方法、编写串口通信程序的大体框架结构和部分代码。     

基于Android平台下Button控件单击事件和监听器的五种编写

Android平台下的应用越来越广泛,Button控件的监听器程序编写显得尤为重要,笔者结合自身的开发经验,总结了5种Button控件单击事件的监听器的编写方法,在此基础上作了5中方法优劣的阐述。     

ActiveX技术在RFID系统开发中的应用

介绍ActiveX技术在构建RFID系统中的重要作用,对ActiveX控件的设计方法进行详细研究,主要介绍用C#编制ActiveX控件时,有关控件的编写和发布以及在Web中调用的关健技术。     

巧用VB的控件数组

控件是可视化开发工具的重要对象之一。在程序设计时通常会遇到具有相同性质的事件过程,如果为每个控件分别编写一段事件过程,则显得十分不经济且结构不合理。在面向对象的程序设计中可采用将多个相同的控件定义为一个控件数组,这个控件数组内的每一个控件都可以共享程序代码。这不仅减少了开发人员重复性劳动而且提高了程序的可读性。通常建立控件数组方法有两种:第一种是在设计阶段时建立,属于静态方式;另一种是在执行阶段,动态地建立控件数组,也即在程序执行时建立。为了避免内存的浪费常采用动态建立控件数组,就是在程序模块(module)内,先声明一个空的控件数组,等到要使用该控件数组时,再重新声明要使用的控件数组元素或数目。控件数组可以动态生成和释放;并且控件数组对属性具有相同控制。动态生成和释放控件数组是在运行时,用Load和Unload语句添加和删除控件数组中的控件。     

Treeview控件在Matlab中的实现

在Matlab的开发环境中,如果能够把大量应用于其他开发环境的成熟的ActiveX控件应用于Matlab环境当中,那么将大大的提高Matlab的大型图形界面的开发能力。针对这一问题,本文介绍了一种在Matlab中使用树形管理控件——Treeview控件的有效方法。在一些大型应用程序的开发中,树形控件的编写几乎是用户图形界面的核心。因此,Treeview控件在Matlab中的成功应用非常具有应用价值。     

基于ActiveX控件建构监控和数据采集系统

文章介绍了基于ActiveX控件在计算机桌面实现模拟式仪表及数字式仪表、示波器等方案,以及由ActiveX控件对监控和采集系统的数据进行屏幕表达的方法,特别强调了基于MFC的程序设计。     

Formation shape control based on bearing rigidity

Distance measurements are not the only geometric quantities that can be used for multi-agent formation shape control. Bearing measurements can be used in conjunction with distances. This article employs bearing rigidity for mobile formations, which was developed for robot and sensor network localisation, so that bearings can be used for shape control in mobile formations. The first part of this article examines graph theoretical models for formation network analysis and control law design that are needed to maintain the shape of a formation in two-dimensional space, while the formation moves as a cohesive whole. Bearing-based shape control for a formation of mobile agents involves the design of distributed control laws that ensure the formation moves, so that bearing constraints maintain some desired values. The second part of this article focuses on the design of a distributed control scheme for nonholonomic agents to solve the bearing-based formation shape control problem. In particular, a control law using feedback linearisation is proposed based on shape variables. We simulate the shape control behaviour on differential drive agents for an exemplary bearing rigid formation using the results obtained in the first and second parts of this article.     

“互联网+防汛防台”轻应用研究

针对防汛防台信息服务的瓶颈问题,提出轻应用、跨平台、"互联网+"的解决思路,开发道路积水、台风路径、防汛分区响应、进博会防汛保障等轻应用,为轻应用在防汛、水务、应急等工作中的大规模开发和应用进行探索。     

基于构件化的制丝线多路径控制系统的研究

介绍了制丝线构件化多路径控制系统和特点,针对目前制丝线分组加工的需求,研究、分析了自动化控制系统的发展和适应性,以及构件化控制平台的架构和主要内容,为多路径控制提供了新的解决方案。     

AQM router design for TCP network via input constrained fuzzy control of time-delay affine Takagi–Sugeno fuzzy models

In this article, Takagi–Sugeno (T–S) fuzzy control theory is proposed as a key tool to design an effective active queue management (AQM) router for the transmission control protocol (TCP) networks. The probability control of packet marking in the TCP networks is characterised by an input constrained control problem in this article. By modelling the TCP network into a time-delay affine T–S fuzzy model, an input constrained fuzzy control methodology is developed in this article to serve the AQM router design. The proposed fuzzy control approach, which is developed based on the parallel distributed compensation technique, can provide smaller probability of dropping packets than previous AQM design schemes. Lastly, a numerical simulation is provided to illustrate the usefulness and effectiveness of the proposed design approach.     

等级保护三级操作系统标准的自主访问控制实现

访问控制是安全操作系统必备的功能之一,从访问控制入手,介绍了自主访问控制的概念、特点、类型,对自主访问控制的原理和实施机制进行研究分析,同时结合信息安全等级保护中对操作系统访问控制的技术要求,重点介绍了符合三级标准的宿主型自主访问控制的实现方式。     

Could the doctrine of moral rights be used as a basis for understanding the notion of control within data protection law?

This article considers the notion of individual control of personal data as envisaged by the European data protection framework and makes the argument that it is a poorly-understood and under-developed concept, but that our understanding of it may be improved by way of analyses and comparisons with the doctrine of moral rights, an important constituent element of intellectual property law. The article starts by examining the concept of personal data itself, and why an enhanced level of individual control over personal data is thought to be a desirable regulatory objective. Following this, the article examines the scholarly literature pertaining to individual control of personal data, as well as a range of relevant EU policy documents. Having done so, the article argues that the notion of control is muddled and confused from both theoretical and practical perspectives. Following this, the article considers the doctrine of moral rights, and through an exploration of its theoretical and practical elements highlights why it may be of assistance in terms of enhancing our understanding of individual control in the data protection context.     

ARM系统设计及其USB主机扩展方案

本文介绍了以ARM为核G微处理器的嵌入式系统的设计方法，以及USB主机控制芯片在ARM系统中的扩展方案．在此硬件平台的基础上，对ucLinux操作系统的移植和应用进行说明，并探讨了USB主机控制芯片驱动程序的设计。     

工业过程常用控制技术的原理和优缺点及发展趋势

控制技术是工业过程中十分重要的技术。控制技术的发展是工业发展的重要标志，具有极其重要的意义。本文对当前常用的控制技术的原理和优缺点作了概括．最后给出了控制技术的发展趋势。     

信息网格跨域访问权限控制的研究

信息网格中资源的共享通过访问控制对合法用户和信息服务请求进行授权来实现,访问控制机制的采用受到信息网格的复合管理域特点的影响。本文阐述了信息网格访问控制的关键问题,分析了信息网格的多管理域特点,进一步提出了一个可以动态更新信息的复合式授权和查验机制,从而解决跨域访问带来的困难、简化管理操作。     

Innovative User Interfaces in Automation Engineering by Application of Usability Engineering Methods Shown by the Example of a Three-Dimensional Plant Representation

This article is the first of 3 that focus on user-centered design and usability in the field of industrial process control. This article starts with an introduction to this special domain and sets out the need for user-centered design of innovative user interfaces. The MediaPlant research project is then introduced. This project aims to generate innovative user interface solutions for process control. The usability engineering methods presented are well known in relation to office application software and were applied in the course of the project to (a) evaluate the potential and application fields of innovative multimedia technology and 3-dimensional information presentation (described at the end of this article), (b) define innovative user interface building blocks for process control that can be applied across sectors (described in the second article, Komischke & Burmester [this issue]) and (c) develop human-centered user interfaces for controlling paper recycling plants (described in the third article, Epstein & Beu [this issue]).