基于Web Services的电子商务系统的研究与架构

在分析Web Services的体系结构和关键技术的基础上,采用基于.Net的Web Services技术,结合标准的Web协议(HTTP、SMTP等)和XML、SOAP、WSDL、VDDI等一系列标准,给出了一个企业电子商务应用集成技术的设计与实现。     

基于XML的Web Services的研究和应用

Web Services是一种新颖的系统应用开发与集成技术,得到了越来越多用户以及开发人员的青睐.对XML、Web Services技术进行了探讨;阐述了基于XML的Web Services的相关概念、框架;给出了一个Web Services应用系统原型的设计和实现.     

基于SOA＆Web Service的企业应用集成研究

面向服务的企业应用集成能快速整合资源，构建基于IT环境的信息系统。Web Services提供了面向服务的具体实现技术。文章在分析SOA概念和架构的基础上，提出了一种基于SOA＆ Web Services的企业应用集成解决方案，并对实现的关键技术进行了深入研究。     

活动预测模型驱动的Web 服务合成

Web 服务工作流被描述成一系列活动的组合,Bonita 提供的流程引擎可以验证产生Web 服务工作流Bonita 基于活动预测模型的基础性构造,实现了流程中活动可预测执行的功能,它使用SOAP 和XML数据绑定技术的Web Services 封装了已有的工作流业务方法并将它们以基于J2EE 的Web Services形式发布。基于活动本体的预测模型使得工作流不再是传统意义上的顺序执行,而是可以实现执行预测,使得Web 应用无论在功能上还是互操作性方面都得到加强;这种机制使得工作流的合成适应Web服务动态     

关于Web服务组合的有效Web服务发现机制

随着Web Services的广泛流行,怎样发现适当Web Services来支持Web Services的组合已经成为一种挑战.由于传统的关键字搜索具有太低的记忆性和精确性,因此这种方法是很低效的.基于Web Services的描述信息,介绍了一种有效的Web Services发现机制.此服务发现方法是简单可用的,通过引入语义变得十分高效,因此该机制成功的在服务组合模型上得到了实现.     

利用．NET实现Web Services在Web中的应用

Web Services是一种全新的组件技术,XML是它的技术基础。主要介绍了Web Services的关键技术和实现Web Services技术的主要协议:XML、SOAP、WSDL和UDDI,以及基于.NET平台对Web Services组件的实现和应用。     

基于Web服务和工作流技术的应用集成研究

基于Web服务的企业应用集成(EAI)以其简单、开放、灵活、高效的优点而成为解决企业应用集成,进而实现企业内和企业间信息共享的有效途径.在基于Web Services的EAI体系结构基础上,提出了基于Web Services和工作流的EAI体系结构并描述了其实现方法.     

基于Web Services的分布式应用研究

对Web Services的架构和特点进行了详细的剖析和讨论,介绍了目前最具有代表性的Web Services构建平台。利用Web Services。能够创建出可供任何人从任何地方使用的功能强大的应用程序,并极大地拓展了应用程序的功能,实现了软件的动态提供。Web Services是下一代的WWW它允许在Web站点上放置可编程的元素。能进行基于Web的分布式计算和处理。     

基于Web Services的成教管理信息系统的设计与实现

介绍了Web Services的相关知识,主要分析了构成Web Services协议栈的各层协议.然后在成人高等教育管理信息系统(以下简称成教管理信息系统)需求分析的基础上,指出传统的C/S结构在开发成教管理信息系统中的不足,并结合Web Services分布式技术,构建了基于Web Services的成教管理信息系统的有效设计与实现方案.     

基于Web Services的分布式异构系统应用集成的研究

针对传统技术在分布式异构系统集成领域存在的问题,提出了基于Web Services的系统应用集成解决方案.通过对Web Servces技术的特点、体系结构及其核心技术的分析,设计了基于Web Services的分布式异构应用集成模型,并利用.NET技术进行了系统应用集成的实现.     

浅议电子商务和电子采购中的信息安全问题

随着近年来互联网技术的迅速发展,基于多媒体和网络技术的电子商务和电子采购应运而生并不断发展,使网络成为国际竞争的新战场。网络安全是保障电子商务和电子采购的生命线,阻碍电子商务和电子采购广泛应用的关键所在即信息安全问题。本文作者根据多年关于电子商务和电子采购的实践经验,总结了存在的信息安全问题,并提出了若干解决方法。     

Multidisciplinary approach to defining public e-procurement and evaluating its impact on procurement efficiency

Utilising the methodology of content analysis, this study uses a multidisciplinary approach to define public e-procurement. Various aspects of e-procurement have been discussed from information systems, supply chain management, electronic commerce/electronic government, and public procurement to come up with an integrated definition of public e-procurement. Following this, e-procurement assimilation has been defined and its impact on procurement efficiency has been evaluated. Following the confirmatory factor analysis in structural equation modelling, dimensional level analysis in ANOVA has been undertaken for the three forms of e-procurement technologies namely e-tendering, e-catalogue management systems, and e-marketplace. The results show the positive and significant impact of the assimilation process on procurement efficiency.     

The Adoption of Electronic Procurement in Singapore

The emergence of new Internet technologies has far-reaching ramifications on the way business is conducted. Notably, it has given rise to e-commerce, which is the transaction of business via the Internet. Recognizing the importance of the Internet as a powerful business tool, many Asian companies have moved quickly to take advantage of electronic commerce. This study explores the role of business-to-business e-commerce, with an emphasis on e-procurement among companies in Singapore. It examines the impact of Internet-based technology on the buyer side of the procurement function, how e-procurement is helping organizations to enhance their competitiveness and the challenges to its adoption. The study also presents the findings from a survey conducted to gain insight into the adoption of e-procurement among companies in Singapore. Specifically, it seeks to uncover the prevalence of and extent to which companies in Singapore are adopting e-procurement, the benefits reaped and the barriers encountered in the course of implementation.     

The Effects of Process Characteristics on the Value of B2B E-Procurement

Even as more organizations are moving towards implementing Web-based B2B procurement solutions, they are unsure of the real benefits of the Web. In other words, what is the value of B2B e-procurement to an organization and how to measure this value? What factors affect this value? In this paper, we discuss an evaluation framework to determine the value of B2B e-procurement and the effect of process characteristics on the value. We use an empirical study to highlight the different value created by different procurement types. We then develop a more comprehensive economic model to capture the additional effects of demand volume and process complexity. The integration of theoretical and empirical approaches provides a strong foundation to develop and evaluate useful adoption strategies for B2B e-procurement.     

A multi-agent based system for e-procurement exception management

E-procurement has become an important function of enterprise information systems. The process of e-procurement includes the automatic definition of product requirements, search and selection for suppliers, negotiation and contracting with suppliers. However, the adoption of e-procurement encounters various uncertainties from internal and external environments, such as inventory failure, sharp increased demand, and delivery delay. In this paper, we propose a novel agent-based architecture for an e-procurement system in which agent technology is applied to deal with the internal and external uncertainties. Through the collaboration and interaction between different agents, the architecture that we propose can enhance the flexibility to handle unexpected exceptions, thus leading to agile procurement management. To valid the feasibility of our approach, a case study has been conducted to investigate how our agents collaborate to manage the inventory failure exception which occurs in restaurant e-procurement.     

Determinants of choice of semantic web based Software as a Service: An integrative framework in the context of e-procurement and ERP

The ever increasing Internet bandwidth and the fast changing needs of businesses for effectiveness with the partners in the procurement chain and is leading organizations to adopt information systems infrastructures that are cost effective as well as flexible. The question seems to be: what is driving organizations to go in for Software as a Service (SaaS) based e-procurement and ERP, rather than the packaged model of software provisioning? Whereas there have been studies reporting technology, cost, quality, network externalities and process as the main variables in the utility function of the user, but most of the studies have modelled either one or two in the their models. The study is exploratory in nature and tries to identify, classify and rank dimensions affecting SaaS sourcing decisions. In this study, we developed an integrative framework to identify the determinants of choice of SaaS in the specific context of SaaS based e-procurement and ERP. The framework was then analyzed using the extended Analytic Hierarchy Process (AHP) method suggested by Liberatore (1987) and the relative importance and the weights of the criteria identified using data collected on 8 users and 9 service providers of SaaS based e-procurement and ERP. Although the analysis helped in identifying quality and costs as the two most important determinants of choice of SaaS based e-procurement and ERP, but the other criteria such as network externality benefits, technology and process were also found to be significant determinants of choice.     

Auction-Based Mechanisms for Electronic Procurement

Auction-based mechanisms are extremely relevant in modern day electronic procurement systems since they enable a promising way of automating negotiations with suppliers and achieve the ideal goals of procurement efficiency and cost minimization. This paper surveys recent research and current art in the area of auction-based mechanisms for e-procurement. The survey delineates different representative scenarios in e-procurement where auctions can be deployed and describes the conceptual and mathematical aspects of different categories of procurement auctions. We discuss three broad categories: 1) single-item auctions: auctions for procuring a single unit or multiple units of a single homogeneous type of item; 2) multi-item auctions: auctions for procuring a single unit or multiple units of multiple items; and 3) multiattribute auctions where the procurement decisions are based not only on costs but also on attributes, such as lead times, maintenance contracts, quality, etc. In our review, we present the mathematical formulations under each of the above categories, bring out the game theoretic and computational issues involved in solving the problems, and summarize the current art. We also present a significant case study of auction based e-procurement at General Motors.     

An e-government framework for assessing readiness for public sector e-procurement in a lower-middle income country

ABSTRACT

Governments globally are leveraging information and communication technology (ICT) growth towards improving the quality of public procurement services for socio-economic development. However, the extent of its application differs across nations. Notwithstanding the extant theoretical and empirical literature on IT for development, knowledge on how to assess readiness for adopting a full e-procurement system in the public sector of lower and lower-middle income countries (LMICs) begs for understanding. With the narrative of Ghana, we address this gap by drawing on the institutional and economic theory and the United Nations E-Government Development Index towards a holistic framework beyond the dyad of linear website functionalities and internet focus of prior e-government adoption models. Elite interviews gathered from multiple cases from Ghana’s public sector reveals the key readiness determinants for a full public sector e-procurement system. This study has significant implications for shaping the process-oriented management of government e-procurement projects towards socio-economic development in LMICs amid their complex institutional and socio-technical environments.     

To be or not to B2B: Evaluating managerial choices for e-procurement channel adoption

E-procurement systems are computer systems and communication networks through which firms buy and sell products. We identify two types of e-procurement systems: extranets and e-markets. Extranets connect the buyer and its suppliers with a closed network, while e-markets create open networks for buyer and supplier interactions. The differences between them lie in system implementation costs, marketplace benefits, and the extent of supplier competitive advantage that develops due to information sharing. In this article, we develop a new theoretical model to analyze the adoption of e-procurement systems from the buyer’s perspective, to explore the set of conditions under which the buyer will prefer to procure via an electronic market instead of using proprietary extranet connections. The primary finding is that a buyer will adopt an e-market approach when the supplier’s competitive advantage derived from access to strategic information is modest compared with the marketplace benefits less the channel costs. In addition, we find that the buyer is likely to have a bigger trading network with an e-market than with an extranet in order to capture the greatest available benefits. Overall, this study offers guidelines for managers to design and select e-procurement channels to fit different procurement needs.     

电子商务环境下的供应链采购策略研究

采购管理是供应链企业降低成本、提高竞争优势的重要环节。论文利用单周期连续型报童模型分析和比较了电子采购策略和传统采购策略的利益机制,量化了Internet在供应链采购管理中的作用。