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In order to improve the quality of healthcare services, the integrated large-scale medical information system is needed to adapt to the changing medical environment. In this paper, we propose a requirement driven architecture of healthcare information system with hierarchical architecture. The system operates through the mapping mechanism between these layers and thus can organize functions dynamically...
Domain engineering is perhaps the most promising method for requirement reuse. However, most of the methods proposed are too generic and lack practical guidelines to be used in information systems development. An information system distinguishes itself from other software as it is developed to facilitate the operation of an organization, hence it reflects its strategies, plans, organizations, processes,...
This study identifies typical scenario patterns in information logistics and explores the impact of a broad context of factors such as strategy, organization, processes, and systems on the shaping of those patterns. Based on an empirical investigation, the current state of information logistics is analyzed. The results reveal three common information logistics scenarios: (S1) Balanced, (S2) Standard...
This paper outlines a new model for the Web inspired by recent research into cognitive science. It is argued that the trend towards decentralisation requires a change from a typical client-server meta-model to one based on the idea of communicating information systems. It is further argued that to accomplish this, one must accept the idea of information as dynamic and embodied. The meta-model described...
The rapid evolutions of software environment and business requirements place a high demand on the adaptiveness of enterprise information systems (EIS). Over the last few years, more and more EIS adopted the distributed multi-tiered Web-based application architecture. Crosscutting concerns and clone codes make the web-based EIS difficult to evolve and maintain. The traditional model-view-controller...
In this paper, a multi-agent based process management system is proposed to modularize, simulate and analyze the existing industrial business process environment dynamically. The different computational agents of the system are presented in a hierarchical architecture, which offers intelligent behavior at different system level. At the bottom level, agents modularize and simulate the typical existing...
Business and information technology alignment plays an important role in the business operation, especially in today's growing competition environment. It can make IT fulfill the business needs and IT value realize. Unfortunately, in spite of the improvements, alignment continues to the top executive surveys as a critical initiative. Alignment needs special skills, tools and methods. Enterprise architecture...
Over the past 20 years, a lot of effort has gone into making the vision of ubiquitous computing a reality. A major focus of this effort has been on the understanding of human activity as input to enable the design and implementation of context-aware applications. Context-awareness is a vital enabling technology for ubiquitous virtual reality applications. However, it is only recently that we have...
The increasing number of requirements for Web information systems and the increasing need for making their components interoperable ask for a new vision for the architecture of such Systems. We focus on two of these requirements: usability and interoperability. We present, in this paper, our contribution that aims at proposing a new architecture of Web information systems, supporting adaptation to...
Digital Earth (DE) is a virtual presentation of the planet based on geographic coordinate, and is an information system with tremendous amount of multiple resolutions and multiple scales data as shown in multiple dimensions. It can visualize the real earth and represent historical phenomena in digital way by using the large amount of data of the earth, and utilizing the computer techniques, image...
SIISAM is a multilayered, Web-service-based architecture model designed to guide construction of a secure, interoperable, and extensible information system that allows smooth interoperation of legacy applications. A pilot e-government system in China built using the model has achieved its targets in both functionality and performance.
The ever changing demands on computational resources has information systems managers looking for solutions that are more flexible. Using a ldquobigger boxrdquo that has more and faster processors and permanent storage or more random access memory (RAM) is not a viable solution as the system usage patterns vary. In order for a system to handle the peak load adequately, it will go underutilized much...
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