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Some properties of singular integral operators over an open curve Dedicated to the 85th birthday of Prof. Lu Jianke

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Science china Mathematics 2007年第5期50卷 628-650页

作者： Yong-jia XU guangdong University of Business Studies, guangzhou 510320, china guangdong University of Business Studies Guangzhou China

In this paper, the stability properties, the endpoint behavior and the invertible relations of Cauchy-type singular integral operators over an open curve are discussed. If the endpoints of the curve are not special, this type of operators are proved to be stable. At the endpoints, either the singularity or smoothness of the operators are exactly described. And the function sets or spaces on which the operators are invertible as well as the corresponding inverted operators are given. Meanwhile, some applications for the solution of Cauchy-type singular integral equations are illustrated.

关键词： stability endpoint behavior singular integral operator paired operators

The Quaternary faunas and climatic fluctuation in the tropical zone of china

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Journal of Geographical Sciences 2003年第4期 106-115页

作者： HUANG Zhenguo, ZHANG Weiqiang ( guangzhou Institute of Geography, guangzhou 510070, china guangdong Business college, guangzhou 510320, china)

About 70 examples of Quaternary fauna in china's tropics are enumerated in this *** which about 40% of the examples can be found even in cooling stages, showing the smalleramplitude of climatic fluctuation during Quaternary. According to the temporal and spatialdistribution of tropical faunas, the following characters of climate variation can be evidenced:twomain cycles in Early Pleistocene, three main cycles in Middle Pleistocene, two main cycles in LatePleistocene and Holocene Megathermal. The drop in temperature during the Latest Glacial Period and

关键词： faunas climate china’s tropics

Geomorphological effects of plate movement during Quaternary in china' s tropics

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Journal of Geographical Sciences 2004年第2期 124-129页

作者： ZHANG Weiqiang 1 ,HUANG Zhenguo 2 (1. guangdong Business college, guangzhou 510320, china 2. guangzhou Institute of Geography, guangzhou 510070, china)

The eastern and western fronts of plate movement in Taiwan Island and Tibetan Plateau respectively are the two major sources of tectonic force for the morphogensis during Quaternary in china's tropics. Seven examples of geomorphological effects of plate movement are enumerated to discuss the differentiation of tectonic landforms in space and time during Quaternary. The tectonic movement tends to be more active since middle Pleistocene. Some phenomena such as the arc-shape mountain systems, volcanism and crustal deformation imply that the juncture zone of eastern and western tectonic forces is located at about 110 o E.

关键词： plate tectonic geomorphological effect china’s tropics

Climatic fluctuation and disasters during recent 100 years in china’s tropics

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Journal of Geographical Sciences 2004年第S1期 14-22页

作者： HUANG Zhenguo1, ZHANG Weiqiang2(1. guangzhou Institute of Geography, guangzhou 510070, china 2. guangdong Business college, guangzhou 510320, china)

The temperature appeared rising trend during the 20th century in china's tropics. Two cooling stages and two warming stages in the process of climatic fluctuation can be recognized. After the 1980s the climate is the warmest which corresponds to the global change, but the warmest period is the 1940s in Kunming. The climate pattern mostly appears contemporaneity of warming and humidity, which is different from the situation of whole china. The natural disasters tend to be aggravated. The number of typhoons increased. Flood damages occurred frequently in the years of more typhoons. The number of droughts and cold damages increased. It was snowed in guangzhou. There was frost in Haikou and Yaxian. Four years of heavy snow have been recorded in Kunming.

关键词： natural disaster climatic fluctuation china’s tropics

Establishment of the Secure Channel between Broker Nodes in Pub/Sub System

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1441-1444页

作者： ZHU Shuren Information Science School Guangdong University of Business Studies Guangzhou 510320 Guangdong China

The paper mainly discusses the integrity of the forwarded subscription message guaranteed by secure channel which encrypted in data communication by using data encryption standard （DES） algorithm and chaos code algorithm between broker nodes in the routing process of the contentbased publish/subscribe system. It analyzes the security of the secure channel encrypted with data communication by DES algorithm and chaos code algorithm, and finds out the secure channel can be easily attacked by known plain text. Therefore, the paper proposes the improved algorithm of message encryption and authentication, combining encryption and the generation of the message authentication code together to finish scanning at one time, which enhances both the secure degree and running efficiency. This secure channel system has a certain reference value to the pub/sub system requiring highly communication security.

关键词： publish/subscribe routing algorithm subscription message secure channel data encryption standard (DES)

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高校图书馆培养跨世纪人才的功能

图书馆论坛 2002年第1期22卷 105-106页

作者：刘萍广东商学院图书馆广东广州510320

本文论述了高校图书馆在培养跨世纪人才中应具有的导读功能、美育功能、德育功能和科学功能 ,针对大学图书馆在服务功能的创新改革与角色定位方面。

关键词：大学图书馆服务功能大学生人才培养角色定位

Research on Negotiating Agent Development

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Research on Negotiating Agent Development

The First Conference on Web Information System and Applications

作者： WEI Ding-guo, PENG HongDepartment of Computer Seience, South china University of Technology, guangzhou 510630, guangdong. china guangdong commercial college, guangzhou 510320, guangdong, china

＜正＞ The paper presents a flexible and effective method of development of negotiating agents. A strategy specification, which is specified by a slate chart and defeasible rules, can be dynamically inserted into an agent shell incorporating a state chart interpreter and a defeasible logic inference engine, in order to yield a desirable agent. The set of desirable criteria and rules is required to be justified with different context of the application.

关键词： automatic negotiation intelligence agent defeasible logic state chart

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论数字图书馆音频资源的制作与发布

图书馆论坛 2004年第3期24卷 77-79页

作者：张源漳广东商学院图书馆广东广州510320

阐述了数字图书馆音频资源数字化保存的优点 ,介绍了从模拟音频资源到数字音频资源的制作过程 ,以及如何利用三层B/S模式、构件技术和流媒体等当前主流技术对音频资源进行发布。

关键词：数字图书馆音频资源制作音频信息发布信息保存数字化构件技术流媒体技术 B/S模式

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论人的全面发展与现代素质教育

四川师范大学学报（社会科学版） 2003年第3期30卷 82-86页

作者：刘苍劲广东商学院人文与传播学院广东广州510320

人的全面发展是建设社会主义社会的本质要求,这是因为实现人的全面发展不仅是社会主义制度优越性的具体体现,也是社会主义制度建设的基本保证。在社会主义社会,人的全面发展集中表现为提高人的综合素质。要提高人的综合素质,有效的素质... 详细信息

人的全面发展是建设社会主义社会的本质要求,这是因为实现人的全面发展不仅是社会主义制度优越性的具体体现,也是社会主义制度建设的基本保证。在社会主义社会,人的全面发展集中表现为提高人的综合素质。要提高人的综合素质,有效的素质教育是关键,要充分利用家庭、学校、社会中的积极因素,按照人的全面发展规律实施科学的素质教育,以促进人的全面发展。

关键词：人的全面发展综合素质素质数育