VxWorks的WindML图形界面程序的框架分析

WindML作为VxWorks下的图形界面开发组件，有其特有的框架结构。介绍了WindML环境的建立，并通过对一个简洁的WindML例程来分析WindML程序的框架结构。     

VxWorks下图形用户界面的开发

分析了嵌入式实时操作系统VxWorks及煤体库WindML的结构和特点，应用WindML提供的API函数，给出了VxWorks操作系统下键盘输入响应及图形界面输出的程序实现。     

VxWorks上的一种GUI系统的设计与实现

VxWorks操作系统原有的图形支持WindML对于开发高级图形应用较困难。CompactGUI系统是采用面向对象、层次化的设计思路，利用SiliconMotion公司的Lynx3DM＋芯片的显卡，实现的一套包括2D硬件加速在内的支持基本图元绘制，位图和矢量字体和基本Windows风格控件的GUI系统。     

WindML下PM6500触摸屏驱动设计及实现

VxWorks6.8操作系统下实现触摸屏驱动一方面能丰富WindML库，可作为模板供用户参考和使用，另一方面，用户使用触摸屏代替鼠标，能更便利操作应用程序，拓展了鼠标受限的应用场景。为此，研究VxWorks6.8操作系统下使用WindML库实现输入设备驱动原理、各层驱动间以及与应用层关系。实现基于WindML库触摸屏驱动软件设计，讨论和建立触摸屏校准算法。通过测试用例和评估方法验证该设计的触摸屏驱动及触摸点校准算法可靠有效。     

嵌入式操作系统VxWorks中的多媒体组件WindML2.0

本文对嵌入式实时操作系统VxWorks的可裁减的多媒体组件WindML2.0作了比较全面的比较，包括它的组成，功能和使用。WindML主要被用来编写VxWorks的图形界面，本文对此用一个实例加以说明。     

VxWorks中WindML窗口机制分析

直接利用WindML提供的底层函数开发人机交互界面十分复杂,而WindML中提供了窗口这一高效的面向对象机制,通过对WindML中窗口机制的分析,给出了开发图形用户界面（GUl）的一般方法。     

WindML事件驱动机制分析

在实时嵌入式操作系统中，WxWorks以其高可靠性、高实时性、高性能特性而著称。该文在概述它的图形用户接口WindML基础上，着重分析了WindML的事件驱动机制。该机制是一个基于C／S结构的、硬设备集中监控的、高效事件分发的机制，它充分体现了分层模块化、任务队列化、低开销强实时性的系统设计思想。     

VxWorks下图形用户界面开发中双缓冲技术应用

介绍和分析了嵌入式实时操作系统VxWorks及媒体库WindML的结构和特点。结合实际,应用WindML提供的API函数,对VxWorks操作系统进行用户图开界面开发,研究在VxWorks下开发图形用户界面的技术难点问题,并给出了问题解决方案和程序实现。     

WindML工业平台下开发S1d13506驱动及显示功能的实现

讨论的内容是使用风河公司提供的WindML来开发爱普生公司生产的S1d13506显卡芯片的驱动,并编写显示程序.在整个开发过程中,WindML提供了快捷便利的编程环境和程序框架.使用WindML提供的API函数,可以开发出用户自己定制的应用程序.同时,WindML给出了通用的显卡驱动程序框架,编程者可以参考这些程序来开发显卡驱动.显卡驱动配置好以后,通过编译工具编译,生成相应的驱动模块,加进VxWorks镜像中,便可以实现显卡的驱动以及建立人机交互的环境.     

WindML和Zinc下实现汉字显示

介绍了基于嵌入式操作系统VxWorks利用图形软件WindML和Zinc实现汉字显示的方法。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate