MATLAB与FORTRAN混合编程接口程序技术的研究

介绍了FORTRAN与MATLAB的各自优势与不足，以及它们之间混合使用的必要性；分析了二种程序混合编程的接口技术以及动态连接函数MEX文件的构建和使用方法，并且用实例阐述了MEX文件的具体编写。     

MATLAB与FORTRAN混合编程接口程序技术的研究

介绍了FORTRAN与MATLAB的各自优势与不足,以及它们之间混合使用的必要性;分析了二种程序混合编程的接口技术以及动态连接函数MEX文件的构建和使用方法,并且用实例阐述了MEX文件的具体编写。     

MFC应用程序框架封装技术在Matlab/Simulink中的应用

介绍了一种将信号实时动态显示单文档-视图应用程序框架封装成动态链接库的方法,并应用到Matlab/Simulink中.Matlab C MEX S-函数,调用该动态库已实现的功能,开发了一个实时显示Simulink模块.     

MATLAB外部网络接口的实现

MATLAB是一个高级的数学分析和计算软件，它在科技领域的应用越来越广泛。但是，由于它不支持网络通信功能，使其在当今网络化时代的应用受到限制。文中提出了一种利用MATLAB外部函数接口(MEX动态链接函数接口)，解决MATLAB不支持网络数据传输的方案，通过试验证明该方法是可行的。     

新型C MEX函数设计MMC整流器控制软件研究

常见的C MEX函数局限于对控制系统局部子函数的C代码验证,不能实现整体方案设计;并且与DSP芯片的软件语法不兼容,无法进行代码移植与实验。提出一种新型多文件结构的C MEX函数,将主函数、算法单元模块、头文件合理分配,通过主函数调用子函数实现控制系统的整体设计。该代码以MMC整流器的电流矢量控制算法为基础,高度模拟了定点DSP芯片的语法规则,可实现对DSP芯片的高效移植。仿真与实验测试结果表明所述C MEX函数实现了电流的解耦控制,提高了软件设计集成度与效率。     

基于Simulink/MEX编程的MATLAB仿真教学动画演示

给出一种基于MATLABS函数和MEX编程的仿真过程动画显示模块实现方法,利用S函数实现动画显示窗口管理和动画帧的显示,通过MEX函数来利用其他编程语言和图形函数库实现动画帧便捷美观的绘制,最终实现仿真过程动画显示。通过此方法得到的S函数模块可集成到Simulink模型中,方便地提供仿真过程的动画演示。     

基于C MEX S函数的盲源分离仿真研究

在分析基于最大信噪比盲源分离算法数学模型的基础上,利用C语言编写S函数,并提出了基于最大信噪比盲源分离系统仿真建模的方法.在Matlab/Simulink中,构造C MEX S函数的简化结构,建立独立功能的模块(如中心化模块、白化处理模块、基于最大信噪比分离模块及后处理的排序模块等),再对各个功能模块进行有机的结合,从而搭建基于最大信噪比盲源分离系统仿真模型,为提高复杂系统模型的仿真速度,以及与仪器仪表结合的设计与调试提供了新的思路.仿真结果证明了采用C MEX S函数方式搭建模型的快速性与有效性.     

在MATLAB环境下实现对硬件资源的访问

在MATLAB环境下对硬件资源如I／O端口或存储单元进行访问的方法进行讨论,通过MEX程序的设计,MATLAB可以访问硬件资源,与硬件进行数据交换,也可以在外部程序中调用MATLAB的函数.在MEX程序中需要将MATLAB下的数据格式进行转换为C语言可以处理的数据类型.最后,结合应用实例说明MEX程序的设计.     

MATLAB外部网络接口的实现

MATLAB是一个高级的数学分析和计算软件，它在科技领域的应用越来越广泛。但是，由于它不支持网络通信，使其在当今网络化时代的应用受到限制。文中提出了一种利用MATLAB外部函数接口(MEX动态链接函数接口)，解决这个问题的方案，通过试验证明该方法是可行的。     

基于EPP和MATLAB的数据采集系统设计

针对工业现场数据采集和科学研究,利用MATLAB软件、DB25针并口、模数转换芯片AD7828,以增强型并口EPP(enhanced parallel port)协议为基础,利用MATLAB强大的数据处理能力和MEX函数,设计了一个在MATLAB环境下的数据采集系统.设计并分析了硬件结构图,用C语言编写了相关的接口软件,并编写了MATLAB环境下的MEX函数.结果表明,该系统可以实现MATLAB环境下数据的有效采集.     

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)

正~~     

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