An Architectural Style for Ajax

A new breed of web application, dubbed AJAX, is emerging in response to a limited degree of interactivity in large-grain stateless Web interactions. At the heart of this new approach lies a single page interaction model that facilitates rich interactivity. We have studied and experimented with several AJAX frameworks trying to understand their architectural properties. In this paper, we summarize three of these frameworks and examine their properties and introduce the SPIAR architectural style. We describe the guiding software engineering principles and the constraints chosen to induce the desired properties. The style emphasizes user interface component development, and intermediary delta-communication between client/server components, to improve user interactivity and ease of development. In addition, we use the concepts and principles to discuss various open issues in AJAX frameworks and application development.Comment: 2nd revision: references ordered, images resized, typo

Enterprise applications: taking the open source option seriously

Free and Open Source Software (FOSS) is becoming more popular. Nevertheless most CIOs wouldn’t even consider this option for their enterprise information technology needs. We found that the three main concerns about FOSS have to do with legal issues, costs and support. We propose an initial framework to look at FOSS in a balanced, unbiased and systematic manner that can be used for evaluation of specific scenarios from very small companies to large ones.The past and the future of information systems: 1976-2006 and beyondRed de Universidades con Carreras en Informática (RedUNCI

Enterprise Architecture: What Aspects is Current Research Targeting

Enterprise architecture is an approach to aligning business and IT within a company. In this paper we present the state of the art in enterprise architecture (EA) research, our survey is based on an analysis of the publicly available publications. Our research methodology defines the analysis criteria. These criteria are: the distribution of the papers over time, their topics, authors, reference disciplines and their dispersion over the lifecycle activities, which will be defined. The evaluation included 80 papers (all referencing explicitly the term "enterprise architecture"). The results of our survey are: EA is a young discipline, but the interest in it is growing. Although a wide range of topics is covered, the discipline is lacking basic research. The main contributers to EA are consulting companies and academics. But academics do not contribute very much to the basic research in EA. Furthermore, very few other disciplines are used to enhance enterprise architecture. In addition enterprise architecture is a new discipline and it will not mature unless substantial basic research will be made

Enterprise applications: taking the open source option seriously

Free and Open Source Software (FOSS) is becoming more popular. Nevertheless most CIOs wouldn’t even consider this option for their enterprise information technology needs. We found that the three main concerns about FOSS have to do with legal issues, costs and support. We propose an initial framework to look at FOSS in a balanced, unbiased and systematic manner that can be used for evaluation of specific scenarios from very small companies to large ones.The past and the future of information systems: 1976-2006 and beyondRed de Universidades con Carreras en Informática (RedUNCI

改进K-means算法在网络入侵检测中的应用

为了增强检测非法入侵的能力,把数据挖掘中的相关算法作用于入侵检测。介绍了入侵检测的概念和k-MEAnS算法。针对k-MEAnS算法的缺点,提出应用于入侵检测的改进k-MEAnS算法。通过实验,改进的k-MEAnS算法能得到比较好的检测率