浅谈计算机网络安全与防御技术

本文通过分析计算机网络安全的概念与现状,针对网络安全防御的关键技术及策略进行分析,以其通过本文的阐述为计算机网络安全体系建设提供技术支持.     

Mining e-Learning domain concept map from academic articles

Recent researches have demonstrated the importance of concept map and its versatile applications especially in e-Learning. For example, while designing adaptive learning materials, designers need to refer to the concept map of a subject domain. Moreover, concept maps can show the whole picture and core knowledge about a subject domain. Research from literature also suggests that graphical representation of domain knowledge can reduce the problems of information overload and learning disorientation for learners. However, construction of concept maps typically relied upon domain experts in the past; it is a time consuming and high cost task. Concept maps creation for emerging new domains such as e-Learning is even more challenging due to its ongoing development nature. The aim of this paper is to construct e-Learning domain concept maps from academic articles. We adopt some relevant journal articles and conference papers in e-Learning domain as data sources, and apply text-mining techniques to automatically construct concept maps for e-Learning domain. The constructed concept maps can provide a useful reference for researchers, who are new to the e-Leaning field, to study related issues, for teachers to design adaptive learning materials, and for learners to understand the whole picture of e-Learning domain knowledge.     

A Local Semi-Implicit Level-Set Method for Interface Motion

This paper proposes and implements a novel hybrid level set method which combines the numerical efficiency of the local level set approach with the temporal stability afforded by a semi-implicit technique. By introducing an extraction/insertion algorithm into the local level set approach, we can accurately capture complicated behaviors such as interface separation and coalescence. This technique solves a well known problem when treating a semi-implicit system with spectral methods, where spurious interface movements emerge when two interfaces are close to each other. Numerical experiments show that the proposed method is stable, efficient and scales up well into three dimensional problems.     

Perceptual image preview

Image preview is a convenient way to browse large or multiple images on small displays. However, current signal-level image resampling algorithms may remove many features of interest in the preview image. In this paper, we propose perceptual image preview which retains more perceptual features such that users can inspect features of interest by viewing the preview image only and without zooming in. This technology has two components, structure enhancement and perceptual feature visualization. Structure enhancement enhances the image structure while suppressing subtle details using a gradient modulation method, thus making the succedent perceptual features more apparent. For perceptual feature visualization, features of interest detected in the picture is visualized on the structure enhanced preview image. We demonstrate with two examples of most commonly used image quality features, image blur and noise. The effectiveness of the proposed method is validated by experimental results.     

人才信息系统数据库设计

在人才信息系统的功能需求基础上,设计了一个信息数据库,能够实现招聘信息发布与查找、应聘信息发布与查找以及人才信息统计等功能。整个设计过程从需求分析、概念设计、逻辑设计等方面进行探讨。     

安徽省地震会商系统软件界面设计研究

基于ARCGis9.2的安徽省地震会商系统不仅需要强大的技术功能,还需要友好和一目了然的界面,这样不仅让会商报告者思路清晰,也能使会商观众更加清晰了解地震预报会商内容,从而为决策者更好应对不同地点和不同大小的地震发生可能性做出科学的决策;引入flash8作为软件系统的界面,用flash调用各个模块,无论从界面和功能上都较好的解决了这一问题。     

Vista中信任链建立机制研究

信任链机制是Vista建立可信环境的基础,对其实现过程及安全性分析将为Vista的安全评估提供重要依据.针对Vista中信任链的建立过程,对可信计算机制在Vista中的实现进行了详细的分析,并通过逆向工程的手段对Vista信任链建立过程中的相关代码进行了剖析,给出它们的实现方式和主要的工作流程.并对Vista信任链机制的安全性进行了分析,给出其安全隐患.     

研究生计算机网络课程体系研究与实践

本文研究面向研究生的计算机网络课程体系,包括教学内容和教学方法等。在计算机网络课程的教学实践中,以专题研究组织教学内容,将教学活动分解为相辅相成的三个环节:授课和阅读,课程设计,以及研讨环节。同时,将理论性教学和实践性教学有机结合。教学实践表明,将科研素养的培养融合在课程教学过程中,有助于培养学生在计算机网络领域的研究和创新能力。     

从传统到现代——浅析屏风在室内环境中的应用

本文通过对屏风在传统与现代室内环境中运用的浅析,概括说明屏风的发展历程及其变化特点。指出屏风的发展应顺应时代,以适应现代室内设计中的不同应用。     

民俗文化语境下的高校艺术设计教育

尽管当下中国高等艺术设计教育呈现出前所未有的迅猛发展态势,但在学科建设和教育实施方面也显示出一定的不足和问题,在诸多直接的原因之外,本文立足于深层文化思考,对中国视觉民俗文化主体之一的民间美术所蕴涵的文化意义作了进一步的透析,以期寻绎出在宏阔的民俗文化生态中我国高校艺术设计教学改革的策略与教育发展取向。