SOA和Web Service的区别

SOA(Service Oriented Architecture)技术无疑为下一代企业分布式架构的趋势,但是很多人目前还无法准确把握SOA的概念。本文旨在帮助读者认清SOA与Web Service(Web服务)的本质区别。文章从分布式计算的发展历程出发,说明Web Service与SOA的出现背景及本质区别。     

Knowledge transfer in globally distributed teams: the role of transactive memory

This paper explores the role of transactive memory in enabling knowledge transfer between globally distributed teams. While the information systems literature has recently acknowledged the role transactive memory plays in improving knowledge processes and performance in colocated teams, little is known about its contribution to distributed teams. To contribute to filling this gap, knowledge‐transfer challenges and processes between onsite and offshore teams were studied at TATA Consultancy Services. In particular, the paper describes the transfer of knowledge between onsite and offshore teams through encoding, storing and retrieving processes. An in‐depth case study of globally distributed software development projects was carried out, and a qualitative, interpretive approach was adopted. The analysis of the case suggests that in order to overcome differences derived from the local contexts of the onsite and offshore teams (e.g. different work routines, methodologies and skills), some specific mechanisms supporting the development of codified and personalized ‘directories’ were introduced. These include the standardization of templates and methodologies across the remote sites as well as frequent teleconferencing sessions and occasional short visits. These mechanisms contributed to the development of the notion of ‘who knows what’ across onsite and offshore teams despite the challenges associated with globally distributed teams, and supported the transfer of knowledge between onsite and offshore teams. The paper concludes by offering theoretical and practical implications.     

Store-and-Forward Multicast Routing on the Mesh

We study the complexity of routing a set of messages with multiple destinations (multicast routing) on an n-node square mesh under the store-and-forward model. A standard argument proves that time is required to route n messages, where each message is generated by a distinct node and at most c messages are to be delivered to any individual node. The obvious approach of simply replicating each message into the appropriate number of unicast (single-destination) messages and routing these independently does not yield an optimal algorithm. We provide both randomized and deterministic algorithms for multicast routing, which use constant-size buffers at each node. The randomized algorithm attains optimal performance, while the deterministic algorithm is slower by a factor of O( log ² n). We also describe an optimal deterministic algorithm that, however, requires large buffers of size O(c). A preliminary version of this paper appeared in Proceedings of the 13th Annual ACM Symposium on Parallel Algorithms and Architectures, Crete, Greece, 2001. This work was supported, in part, by MIUR under project ALGO-NEXT.     

Emotional agent based on rough set

To improve the ability of agent for handling emotions, a new architecture for emotion agent is presented, based on the traditional BDI agent model and the rough set theory. By a new emotional reasoning algorithm based on rough set, the architecture performs emotion reasoning and implements the emotion treatment. An emotional agent grid based on this architecture has been realized, experiment results show that it is efficient to transact simple emotions by emotional agents.     

Study on E-commerce system architecture based on MVC model and J2EE platform

The paper discusses the concept and basic theory of MVC design pattern in detail. And J2EE technique system which is often used in the advance enterprise application is also introduced. Based on electronic commerce traditional application architecture, the MVC design pattern and J2EE technique are combined and a new electronic commerce application system architecture is put forward. The architecture improves the maintainability and reliability of system, and capability of repeat use in increased. Therefore the architecture will influence today＇s system technology of E-commerce strongly.     

基于构件技术的电子政务系统架构研究及实现

本文讨论了构件的基本概念、特点和原理,阐述了电子政务的基本应用框架结构,通过结合CORBA开放性、跨平台的特性和EJB业务处理能力,提出了一种可伸缩、健壮的、基于构件的电子政务系统架构方式并进行了全面的研究。该系统架构易于开发、管理和复用,为建立高效电子政务提供了有益的理论指导和实践意义。     

AGAPIA v0.1: A Programming Language for Interactive Systems and Its Typing System

A model (consisting of rv-systems), a core programming language (for developing rv-programs), several specification and analysis techniques appropriate for modeling, programming and reasoning about interactive computing systems have been recently introduced by Stefanescu using register machines and space-time duality, see [Stefanescu, G. Interactive systems with registers and voices. Fundamenta Informaticae 73 (2006), 285–306. (Early draft, School of Computing, National University of Singapore, July 2004.)]. After that, Dragoi and Stefanescu have developed structured programming techniques for rv-systems and their verification, see, e.g., [Dragoi, C., and G. Stefanescu. Structured programming for interactive rv-systems. Institute of Mathematics of the Romanian Academy, IMAR Preprint 9/2006, Bucharest 2006. Dragoi, C., and G. Stefanescu. Towards a Hoare-like logic for structured rv-programs. Institute of Mathematics of the Romanian Academy, IMAR Preprint 10/2006, Bucharest, 2006. Dragoi, C., and G. Stefanescu. Implementation and verification of ring termination detection protocols using structured rv-programs. Annals of University of Bucharest, Mathematics-Informatics Series, 55 (2006), 129–138. Dragoi, C., and G. Stefanescu. Structured interactive programs with registers and voices and their verification. Draft, Bucharest, January 2007. Dragoi, C., and G. Stefanescu. On compiling structured interactive programs with registers and voices. In: “Proc. SOFSEM 2008,” 259–270. LNCS 4910, Springer, 2008.].In the present paper a kernel programming language AGAPIA v0.1 for interactive systems is introduced. The language contains definitions for complex spatial and temporal data, arithmetic and boolean expressions, modules, and while-programming statements with their temporal, spatial, and spatio-temporal versions. In AGAPIA v0.1 one can write programs for open processes located at various sites and having their temporal windows of adequate reaction to the environment. The main technical part of the paper describes a typing system for AGAPIA v0.1 programs.     

数据库课程体系建设和教学方法探索

本文论述了我院从数据库系列课程体系的构建、课程知识结构化及优化、针对课程各模块内容特点的教学方法手段的选取、实验教学方式、课程设计教学模式等五个方面进行的积极而有效的探索。     

虚拟现实技术应在建筑类艺术设计专业教学中广泛使用

虚拟现实技术随着计算机硬件与软件功能的增强飞速发展,它对建筑设计产生了重大的影响。虚拟现实技术所具有的优点,使它成为满足现代建筑设计要求的关键技术。在建筑学专业的教学中,我们应当引入虚拟现实的教学,让学生掌握虚拟现实技术。     

中国古典建筑设计对于现代城市建筑设计伦理的启示

建筑设计是人类为了满足自身的居住需要而进行的一项创造性活动,通过对现代建筑设计进行的深刻反思,以及分析中国古典建筑的伦理意识以及审美形态等,从宽泛意义上的伦理学角度思考,引出研究中国古典建筑伦理特点的必要性,试图从设计伦理层面来启示现代建筑设计与中国古典文化精神互通的可能性。