软件体系结构,应用平台及框架仓库技术

应用平台是新近提出的一种中间件技术，其主旨是为应用提供更强大的支持。最近几年兴起的软件体系结构研究已为应用平台的研究开发打下了必要的技术基础。ＣＡＳＥ集成工具与环境是应用平台的物理动手。框架仓库和面向对象组织是应用平台的集成保证。     

电子装配行业的MES体系结构及技术实现

针对电子装配行业的特点和制造执行系统（MES）的需求,采用基于SOA的设计方法和理念,提出基于Web服务的MES软件体系结构,建立基于工作流的电子装配过程实时可视化、实时生产排程、实时生产过程跟踪技术框架。提出基于WebServices技术和J2EE平台的软件体系结构技术实现框架。开发的MES系统应用在某SMT车间,证明该系统具有较好的实时、可配置、可重构、可集成性能。     

基于SOA集成高校信息系统

面向服务的体系结构（SOA）是一种新兴的软件体系结构,文章介绍了SOA的概念和基本结构,针对SOA的实现手段之一Web Services,给出了某高校应用Web Services实现SOA集成的实例,是构建新一代高校集成的最佳方案。     

SOA构架与电子商务应用集成*

利用SOA(Services Oriented Architecture)（面向服务构架）技术、AI（Application Integration,应用集成）技术、计算机安全技术等相关技术构建了以SOA为框架的电子商务应用集成平台,为参与电子商务的各主体间的应用集成提供了一套安全的、兼容的和可扩展的解决方案,最后通过一个实例分析验证了解决方案的可行性。     

ATR信息处理系统的软件总线应用

ATR系统的开发是插头插座式软件体系结构下的算法构件组装.为支持算法评估和选择,文章借鉴计算机硬件总线技术,提出了采用软件总线技术对算法构件进行集成,同时给出了具有形式化语义的消息模型.基于ATR支撑平台的ATR系统开发时可以进行算法评估和算法选择,在新的算法出现时不需要对平台进行修改.理论研究表明:软件总线为ATR支撑平台扩展、为通用平台提供了实现途径.     

B2B集成技术的体系结构

介绍了B2B集成技术的体系结构和概念上的模型，用来支持统一概念集成模型中并发的A2A和B2B集成。概念集成模型通过设计时仓库完成，集成模型作为元数据存储在设计时仓库。B2B集成技术的执行时范例完成实际的应用和贸易伙伴商务交易遵循编译的方法，根据存储在设计时仓库中的集成模型，执行器完成实际的集成实例。     

面向服务的柔性迁移工作流停靠站设计

在迁移工作流系统中，停靠站服务器是迁移实例的运行支撑平台，必须能够支持多种支撑服务和应用服务的集成，适应运行环境和应用需求的动态变化。基于面向服务的概念，提出了一个可扩展、可定制和可重配置的停靠站服务器结构模型，描述了模型的体系结构和内核结构，讨论了服务组件的集成框架和组织模式，以及应用服务的部署模式等，并结合微内核和组件技术给出了参考实现方案。     

支持MDA的J2EE PSM模型描述及代码生成方法

为解决模型驱动体系结构(MDA)中PSM模型描述存在的问题，以软件体系结构为基础，综合当前J2EE平台下广泛使用的多种应用框架，提取其共同特征并加以抽象分析，建立了一种包括领域构件模型、行为构件模型和界面展示构件模型3部分的J2EE平台模型描述方法。用该方法描述的模型不仅具有J2EE平台的特性信息，还便于向多种目标框架下的代码进行转换。以此为基础，引入抽象平台有关模型和具体平台有关模型的概念，进一步扩展了MDA开发框架。介绍了相应代码生成器的框架设计和实现过程。     

基于CORBA的分布式信息交换处理系统模型

讨论了分布对象技术在大型分布式企业计算环境中的应用,给出了分布式信息交换处理系统的软件体系结构和模型实现。传统的大型分布式企业计算环境具有如下应用特征：异构平台繁多、存在多种遗留应用、大量业务应用系统不能实现透明的互联互操作。针对上述特征,系统采用当前分布对象技术中的主流－CORBA技术,设计与实现了一个分布式信息交换处理集成平台,为企业内部繁多的业务应用系统提供了一个应用集成框架,将企业内各类复杂的计算资源集成为一个有机的整体。     

多层企业应用的关键：J2EE应用服务器

1 引言目前在Internet/Intranet/Extranet环境中,企业级应用系统大多采用3层/多层的应用模式。为了方便地开发、部署、运行和管理基于3层/多层结构的应用,需要以网络和分布式计算的底层技术为基础,构建一个完整的应用框架,提供相应的支撑平台作为多层应用的基础设施,这一支撑平台的关键就是位于中间层的应用服务器。应用服务器是一个创建、部署、运行、集成和维护多层分布式企业级应用的平台。如果应     

一种可重用的验证平台结构

传统的验证方法学已经不能满足SoC验证的需求,现在通常使用验证平台来提高验证的质量。SoC的设计实际上是IP的集成设计,因此需要建立两个验证平台：IP单独验证平台和SoC集成验证平台。为了减少验证时间,提高验证质量,最有效的办法是使这两个验证平台统一,即IP单独验证平台的部分元件甚至全部元件可以直接被SoC集成验证平台重用。文中提出的验证平台结构,可以直接使IP单独验证平台的部分元件,如激励、驱动、监视器、脚本等可以直接为SoC集成验证平台所重用。     

基于Web Service技术的异构系统的无缝集成

针对企业信息化过程中普遍存在的"信息孤岛"现状,提出了一种基于Web Service技术的企业应用集成框架.基于Web Service技术的系统集成克服了传统企业应用集成方法的不足,所构建的集成框架完全屏蔽了不同软件平台之间的差异,大大地提高了企业异构系统的可集成性.该应用集成模式,不需要对现有系统作大的改动就可以实现集成的高可用性和高可扩展性.     

Macro-programmable reconfigurable stream processor for collaborative manufacturing systems

Growing demand for high speed processing of streamed data (e.g. video-streams, digital signal streams, communication streams, etc.) in the advanced manufacturing environments requires the adequate cost-efficient stream-processing platforms. Platforms based on the embedded microprocessors often cannot satisfy performance requirements due to limitations associated with the sequential nature of data execution process. During the last decade, development and prototyping of the above embedded platforms has started moving towards utilization of the Field Programmable Gate Array (FPGA) devices. However, the programming of an application to the FPGA based platform became an issue due to relatively complicated hardware design process. The paper presents an approach which allows simplification of the application programming process by utilization of: (i) the uniformed FPGA platform with the dynamically reconfigurable architecture, (ii) a programming technique based on a temporal partitioning of the application in segments which can be described in terms of macro-operators (function specific virtual components). The paper describes the concept of the approach, presents the analytical investigation and experimental verification of the cost-effectiveness of the proposed platform comparing to the platforms based on sequential micro-processors. It is also shown that the approach can be beneficially utilized in collaborative design and manufacturing.     

基于Web Services的信息查询系统

Web Service是分布式计算领域出现的最新成果,Web Service技术对于解决分散或分布式应用具有明显优势.本文提出基于Web Service的信息查询系统的系统架构和解决方案,可以屏蔽掉平台的差异性,较理想地实现跨平台数据访问.最后给出一个实例运用.     

Open Source Software: All You Do Is Put It Together

As of 1 August 2007, SourceForge.net hosted more than 150,000 registered open source software projects, and many more projects are available on other sites. With so many OSS choices, it might seem that building a new application is only a matter of finding the appropriate projects and putting them together. We've developed the adaptable multi-interface communicator infrastructure to support rapid prototyping from OSS components. AMICO is based on existing middleware platforms for component integration, but it focuses on pragmatic aspects of OSS integration often absent from existing integration platforms. AMICO satisfies requirements based on our experiences in solving practical problems in several projects. AMICO OSS is based on a publish-subscribe infrastructure for integrating loosely coupled services. In such infrastructures, a publisher updates a shared data repository. The loosely coupled approach can be highly adaptable when using simple data structures, because new applications can use existing data in the model and add their own without breaking the infrastructure. Components communicate by exchanging events through a shared data repository consisting of named slots called variables. Components can update the variables and register for notifications about variable changes. Modules can also derive new variables by processing existing ones.     

仓库技术

仓库技术是支持软件工程集成环境的必要手段之一，也是支持ＣＡＤ／ＣＡＭ等复杂数据处理的重要方法。本文围绕仓库的概念，发展及其实现作了一些讨论，同时，还进一步讨论层次数据库管理系统（ＨＤＢＭＳ），网状数据库管理系统（ＮＤＢＭＳ），关系数据库管理系统（ＲＤＢＭＳ），面向对象的数据库管理系统（ＯＯＤＢＭＳ），知识库管理系统（ＫＢＭＳ）在仓库技术的实现中所扮演的角色。     

Structural analysis of value creation in software service platforms

As software service platforms grow in number of users and variety of service offerings, it raises the question of how this phenomenon impacts the value obtained by users. This paper identifies system usability, service variety, and personal connectivity to be the major determinants that contribute to the value offered to users on mobile software service platforms. A structural equation model, which is based on utility theory, technology acceptance theory, and the theory of network externalities, has been constructed from seven observed constructs, reflecting the three determinants and the user value. The lower bound of user value is estimated through the user’s willingness-to-pay for services and the user’s willingness to spend time on using services. For the validation, a co-variance-based structural equation analysis has been conducted on online survey data of 210 users of mobile service platforms (e.g., Android, iOS). The results show that the number of services used and the number of active user connections were found to be the strongest constructs explaining user value. Perceived usefulness did not explain user value as much. In total, they can explain 49 % of the value that the user receives from the platform. The implication of this result is that users’ value from a software service platform cannot be explained by the technology acceptance model itself. Instead, an approach that, as used in this research, of integrating network externality theory, utility theory, and technology acceptance theory is necessary.     

Repast:基于Agent建模仿真的可扩展平台

建模仿真平台为基于Agent建模理论和方法的研究创造了条件.在研究当前流行的基于Agent建模仿真平台不足的基础之上,介绍了一种新的基于Agent建模仿真平台Repast,详细阐述了该平台的设计目标、框架结构及运行机制等内容,并结合一个实例简要说明了Repast模型的设计与实现过程.该平台移植性和可扩展性强,使用方便,易于学习,方便了应用基于Agent建模仿真方法对复杂适应系统及复杂性的研究及探索,同时也为复杂适应系统的研究提供新的思路.     

Algorithm-embedded IT applications for an emerging knowledge city: Istanbul,Turkey

As city resources around the world begin to stretch beyond capacity due to ever-increasing population, a major challenge for an emerging knowledge city is to maintain high-quality living conditions for its residents. It is therefore imperative existing city infrastructural resources are used in an optimal manner by minimizing cost and maximizing utility. Such infrastructural resources include transportation networks, electricity, water and natural gas lines, sewers, and waste sites. To that end, algorithm-embedded information technology tools have proven to be tremendously useful for city decision makers, and technologies using algorithm-embedded systems are being used more frequently than ever before. In particular, as one of the emerging knowledge cities in the world, Istanbul has been deploying such applications at various levels for better use of the city’s resources. The purpose of this study is two-fold: classify algorithm-embedded information technology application areas related to management of infrastructural resources in a city in a systematic way, and; provide an up-to-date review of each application area and investigate the level of algorithm-embedded information technology use in Istanbul. The study has implications for the city officials as well as officials of other emerging world knowledge cities regarding the use of existing algorithm-embedded information technology tools in their cities.     

基于J2EE的企业应用集成技术的研究与应用

随着现代计算机信息技术的发展,基于J2EE企业应用集成技术打造的信息平台,以其稳定的性能、良好的开发性及严格的安全性,深受企业应用开发者的青睐,在银行、电信、证券及电子商务等领域都得到了广泛应用。此外,现代社会是信息社会,实现企业信息化已经成为企业发展壮大的必然之路,而基于J2EE企业应用集成技术构建的信息化平台,对于实现企业不同平台、不同系统间的资源整合有着重要意义。就基于J2EE的企业应用集成技术的研究现状及应用情况做几点分析,希望能给有关人员带来一些帮助和启发。