Windows平台下补丁管理系统的设计与实现

计算机系统的补丁管理已经成为计算机系统安全的一个重要组成部分.在现有技术下,如何完整、规范地为需要严格与Intemet隔离的内联网计算机用户分发和安装补丁是一个较为突出的问题.文章在微软免费的WSUS(Windows Server Update Services)服务基础上,开发出一套基于Windows平台的内联网补丁管理系统,弥补了WSUS系统的不足,提出了一种解决该问题的方案,并已经在中国人民银行浙江省范围内的分支机构中使用,具有很好的效果.     

基于struts框架的林政加工厂管理系统的开发

随着Internet及全球信息网应用的快速发展,WEB应用已逐步走向企业办公自动化,极大的方便了现代企业处理日常事务,B/S模式的方便性以及安全性越来越受到人们的青睐.本林政加工厂管理系统采用B/S模式,利用Struts框架和Hibernate技术的结合来开发.相对于使用JDBC和SQL来手工操作数据库,Hibernate可以大大减少操作数据库的工作量.     

别让键盘“谋杀”汉字

首先我们先来"赞美"一下我们每天所使用的文字--汉字.它是我们华夏民族几千年文化的瑰宝,也是我们终身的良师益友,每个人的精神家园.人生几十年,一切身外之物都发生了许多次变异.新陈代谢,过时的淘汰了,破损的废弃了,家用电器不多久就要换代,人们都习以为常,毫不为怪.天地万物,只有语言文字是永远存在的.     

虚拟现实及其应用进展

虚拟现实是一种多通道的新型人机交互接口,它提供了具有沉浸感的智能虚拟环境并允许用户和该环境进行交互.计算机技术、交互技术和人工智能等相关技术的快速发展促进了虚拟现实技术的巨大进步,以此为基础的实际应用也得到了很快的发展和提高.描述了虚拟现实的涵义及其本质特征,归纳了适合使用虚拟现实技术的场合,并介绍了虚拟现实技术在教育、医疗、科学可视化和工程制造等方面的最新应用,最后对虚拟现实未来的应用做出了展望.     

Java中双向控件的使用、制作及布局*

介绍了一种国际化控件--双向控件的使用、制作和布局方法,并介绍了如何设置控件的方向,设计控件的结构和布局控件的原理,以及在此过程中可能遇到的问题和解决方法.     

中华卫士DNA构筑中小企业安全链

在目前的安全市场里,活跃着这样一批硬件芯片级防火墙,它们正是卫士通信息产业股份有限公司新近推出的——中华卫士VPN防火墙低端系列产品,由于专门服务于中小企业以及远程分支机构,所以它们都普遍具有高性价比、功能齐备和使用     

中国可信计算技术:TCM带动IT安全新革命

创新点:传统的防御方式主要通过防火墙、病毒检测、VPN及加密锁等安全体系,都是以被动防御为主,大有兵来将挡、水来土掩之势,结果不仅各种防御措施花样层出,而且防火墙也越砌越高、入侵检测越做越复杂、恶意代码库越做越大,但是信息安全仍然得不到有效保障。如今,最简单的方法,就是建立起中国自主可信计算的技术架构,让我们的计算机像人类的免疫系统那样可以识别计算状态、防泄漏、防木马、防病毒。可信计算平台让我们看到了IT安全新革命的曙光,这也将是未来安全免疫计算的重要基础。     

上海大学自强队征战RoboCup伊朗公开赛获小型组冠军

在RoboCup机器人大赛开展10周年之际,RoboCup机器人伊朗公开赛(IranOpen2007)于2007年4月3日-7日在伊朗首都德黑兰举行,本次大赛分为senior与junior组,参赛队伍有东道主伊朗、德国、巴西、日本、葡萄牙、中国等共400多支代表队,比赛项目包括了除RoboCup2D组以外的RoboCup其它组全部项目.     

PTC的梦想

2004年11月16日,PTC在北京召开了2004年PTC用户大会,这是全球巡展(北美、印度、欧洲以及日本)的其中一站,来自总部的8位专家,为了更好地了解用户的需求,与参会的1000多名企业代表进行了面对面交流.人数规模之大给记者留下了深刻印象,也给竞争对手施加了压力.目前PTC在全球已为35000多家用户提供了PLM解决方案,在中国市场,自2003年Pro/ENGINEER野火版投放以来,约52%的老客户已开始采用,Windchill 7.0推出仅6个月,用户数量即扩大了15%.环顾我们身边,航天、船舶、汽车、电脑、甚至牙刷等等,越来越多的产品留下了PTC的痕迹,他在幕后默默地帮助企业实现一个又一个梦想的同时也在一步步实现着自己的梦想.     

稳步发展的HP CAE

随着市场需求的不断扩大,世界巨头开始纷纷入住中国.在街头、商场、办公室,越来越多中国制造的名牌映入眼帘.不过,几年前很多厂商都是看中中国低廉的劳动力,采取国外元件,中国组装的方式进行生产.市场永远是最终的引导者,中国人群的消费水平、审美水准在潜移默化地提高,洋品牌不得不开始考虑中国人的生活习惯、东方人的审美思想,中国制造也开始了转变.曾经属于研究院所"专有名词"的CAE开始作为产品设计研发的重要一环,被越来越多的企业所应用,其需求在稳步增长.     

Methods of system development in Finland

Interest in the use of different methodologies, methods and tools for information systems analysis and design has been increasing for the last decade in Finland. This has resulted in the founding of a special interest group in systems analysis and design within the Finnish Data Procesing Association and in its making a survey of the methods and tools in use in Finland in 1980. This survey was in the form of a questionnaire mailed to the company members of the association. The results of the survey show a wide use of different tools in the design and implementation of information systems. In the analysis phase, there seems to be a need for more and better methods and tools. In 1980 several companies began to use new methodologies, methods and tools in the field; the most common are: the Swedish ISAC, Jackson's JSP, and the data dictionary.     

基于Visual FoxPro环境AeCESS数据库操作的实现

在Visual FoxPro中使用ACCESS数据库,能够克服其自奄存在的数据库、数据表与索引文件分离、数据表安全性不高等不利因素,较好地发挥二者在数据库管理与编程方酗的优势。鉴于这方面的资料较少,系统地阐述Visual FoxPm环境下ACCESS数据库的操作方法,实现在Visual FoxPro中ACCESS数据库的建立、压缩与修复;数据表的建立、结构与记录的维护;Visual FoxPro数据库与ACCESS数据库的相互转换、Visual FaxPro中通用字段与ACCESS中OLE字段的数据转换等方法是很多用户的客观需求。用Visual FoxPro编程方式全面操纵ACCESS数据库具有重要的理论与应用价值。     

Combined effects of fabric air permeability and moisture absorption on clothing microclimate and subjective sensation during intermittent exercise at 27 degrees C

The present paper aimed at determining the combined effects of two different levels of air permeability and moisture absorption, in terms of clothing microclimate and subjective sensation, in resting and exercising subjects at an ambient temperature of 27 °C, a relative humidity of 50% and an air velocity of 0.14 m s^-1. Three kinds of clothing ensemble were investigated: (1) polyester clothing with low moisture absorption and low air permeability (A), (2) polyester clothing with low moisture absorption and high air permeability (B), and (3) cotton clothing with high moisture absorption and high air permeability (C). The subjects exercised for 10 min on a cycle ergometer at an intensity of 30% maximal oxygen uptake and then had a 10 min rest. This sequence was repeated four times. The main findings are summarized as follows: (1) The clothing microclimate humidity in the back area was significantly higher in A than in B, and in C than in B. (2) The clothing microclimate temperature in the chest area was significantly higher in B than in A, and in B than in C. (3) The clothing microclimate temperature in the back area was significantly higher in C than in B. (4) The clothing surface temperature was significantly higher in C than in B. (5) Although the positive relationships between the microclimate humidity and forearm sweat rate was significantly confirmed in all three kinds of clothing, the microclimate humidity at chest for the same sweat rate was lower in C than in A and B. (6) Although the positive relationships between subjective sensation and forearm sweat rates were significantly confirmed in all three kinds of clothing, the subjective discomfort seemed to be reduced more effectively in C than in A and B for the same sweat rate. These results were discussed in terms of thermal physiology and combined effects of air permeability and moisture absorbency of the fabrics.     

古典青铜器设计中科学性与艺术性的统一

本文主要对于古典青铜器中科学技术的运用从其设计上科学性与艺术性的统一上进行了分析和研究。希望通过本文让大家对古典青铜器设计中科学性与艺术性的统一有一个了解和认识,以便日后更好地运用到现代的产品设计中。     

跨设备交互场景下参照域构建方法的设计策略研究

针对智能家居中跨设备交互的内容传输问题,从参照类型和工件数量 2 个方面定义交互的可见性, 并在此基础上提出了 4 种参照域构建方法(物理的,物理耦合的,数字的,自然的)。通过“绿野仙踪”实验探究 4 种方法在单一任务和主次任务场景下对用户体验的影响,实验结果表明,不同方法在同一场景,以及同一方法 在不同场景的用户体验有差异。得出 2 个方面结论：①方法的差异性,物理的方法是高效而有趣的,物理耦合的 方法最有趣但实行性较低,数字的方法最实用但也是常规的,自然的方法在主次任务场景下最实用;②场景的差 异性,主次任务场景中用户重点关注实用性,而用户在单一任务场景中既关注实用性也对享乐性提出了要求。     

青藏高原1982~2015年FPAR时空变化分析

植被吸收利用太阳光合有效辐射比率反映了植被固碳释氧能力,根据青藏高原GIMMS NDVI3g（1982~2015年）和MODIS NDVI（2001~2015年）数据,采用非线性半理论半经验模型进行FPAR反演及时空变化分析。结果表明：①2001~2015年GIMMS NDVI3g和MODIS NDVI反演FPAR在空间分布上具有较高的一致性,相关系数为0.82（P<0.01）,年际变化趋势一致至少6年的区域占80%;②青藏高原FPAR受坡度和海拔影响较大,其中15~35坡度FPAR变化最快,700~2 100 m海拔区间FPAR值最大;不同坡向对应的FPAR除南坡方向偏低外其他方向差异不大。③1982~2015年青藏高原四季FPAR时空变化研究中,冬季FPAR年际变化最明显,约78.5%的区域表现为增长趋势;秋季FPAR下降区域最多,但超过71.5%区域变化不显著;④基于MODIS NDVI和GIMMS NDVI两数据反演的所有植被类型的FPAR都在2012年间出现小幅度下降趋势,且不同植被类型FPAR的年际变化趋势各不相同。     

LMI-based H ∞ synchronization of second-order neutral master-slave systems using delayed output feedback control

The H _∞ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delay-dependent sufficient conditions for the design of a delayed output-feedback control are given by Lyapunov-Krasovskii method in terms of a linear matrix inequality (LMI). A controller, which guarantees H _∞ synchronization of the master and slave structure using some free weighting matrices, is then developed. A numerical example has been given to show the effectiveness of the method. The simulation results illustrate the effectiveness of the proposed methodology. Recommended by Editorial Board member Bin Jiang under the direction of Editor Jae Weon Choi. This research has been partially funded by the German Research Foundation (DFG) as part of the Collaborative Research Center 637 ‘Autonomous Cooperating Logistic Processes: A Paradigm Shift and its Limitations’ (SFB 637). This work was supported in part by the National Natural Science Foundation of China (60504008), by the Research Fund for the Doctoral Program of Higher Education of China (20070213084), by the Fok Ying Tung Education Foundation (111064). Hamid Reza Karimi born in 1976, received the B.Sc. degree in Power Systems Engineering from Sharif University of Technology in 1998 and M.Sc. and Ph.D. degrees both in Control Systems Engineering from University of Tehran in 2001 and 2005, respectively. From 2006 to 2007, he was a Post-doctoral Research Fellow of the Alexander-von-Humboldt Stiftung with both Technical University of Munich and University of Bremen in Germany. He held positions as Assistant Professor at the Department of Electrical Engineering of the University of Tehran in Iran, Senior Research Fellow in the Centre for Industrial Mathematics of the University of Bremen in Germany and Research Fellow of Juan de la Cierva program at the Department of Electronics, Informatics and Automation of the University of Girona in Spain before he was appointed as an Associate Professor in Control Systems at the Faculty of Technology and Science of the University of Agder in Norway in April 2009. His research interests are in the areas of nonlinear systems, networked control systems, robust filter design and vibration control of flexible structures with an emphasis on applications in engineering. Dr. Karimi was the recipient of the German Academic Awards (DAAD Award) from 2003 to 2005 and was a recipient of the Distinguished Researcher Award from University of Tehran in 2001 and 2005. He received the Distinguished PhD Award of the Iranian President in 2005 and the Iranian Students Book Agency’s Award for Outstanding Doctoral Thesis in 2007. He also received first rank of Juan de la Cierva research program in the field of Electrical, Electronic and Automation Engineering in Spain in 2007. Huijun Gao was born in Heilongjiang Province, China, in 1976. He received the M.S. degree in Electrical Engineering from Shenyang University of Technology, Shengyang, China, in 2001 and the Ph.D. degree in Control Science and Engineering from Harbin Institute of Technology, Harbin, China, in 2005. He was a Research Associate with the Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, from November 2003 to August 2004. From October 2005 to September 2007, he carried out his postdoctoral research with the Department of Electrical and Computer Engineering, University of Alberta, Canada, supported by an Alberta Ingenuity Fellowship and an Honorary Izaak Walton Killam Memorial Postdoctoral Fellowship. Since November 2004, he has been with Harbin Institute of Technology, where he is currently a Professor. His research interests include network-based control, robust control/filter theory, model reduction, time-delay systems, multidimensional systems, and their engineering applications. Dr. Gao is an Associate Editor for the IEEE Transactions on Systems, Man and Cybernetics Part B: Cybernetics, the Journal of Intelligent and Robotics Systems, the Circuits, System and Signal Processing etc. He serves on the Editorial Board of the International Journal of Systems Science, the Journal of the Franklin Institute etc. He was the recipient of the University of Alberta Dorothy J. Killam Memorial Postdoctoral Fellow Prize in 2005 and was a corecipient of the National Natural Science Award of China in 2008. He was a recipient of the National Outstanding Youth Science Fund in 2008 and the National Outstanding Doctoral Thesis Award in 2007. He was an outstanding reviewer for IEEE Transactions on Automatic Control and Automatica in 2008 and 2007 respectively, and an appreciated reviewer for IEEE Transactions on Signal Processing in 2006.     

Ergonomics and safety in societies in transfer

In Central Europe, the influence of transformation on science and practice in both ergonomics and occupational safety has been positive. The opening of markets has automatically resulted in the quality of products of various countries being compared. The comparison of the state of science has been equally revealing. The spontaneous willingness of leading world centres to co-operate in both occupational safety and ergonomics has resulted in positive changes, e.g. intensive work on creating the instruments for: implementing ILO conventions and EU directives into national laws; implementing international and European standards into national standards; accrediting testing laboratories in the field of occupational safety and ergonomics; accrediting centres for product certification for the safety mark (obligatory) and for conformity with ergonomic parameters (voluntary); and computer-aided designing and creating databases in occupational safety and ergonomics conforming to international standards. These are the laws of the emerging common market for products and services. There is still a much more difficult area of necessary changes in the approach to: the value of life and health; the belief in the possibilities and the effectiveness of initiatives towards changing the working and life environment; and the form and content of the information in occupational safety and ergonomics taught from school to adult education. Transformation has led to a renaissance in which man has become the subject of all aspects of life and activity. There is also a renaissance of occupational safety and ergonomics. The fields of research that have gained importance in this new approach in Central Europe are discussed.     

中国图像工程：2006

该文是关于中国图像工程的年度文献综述系列之十二。为了使国内广大从事图像工程研究和图像技术应用的科技人员能够较全面地了解国内图像工程研究和发展的现状,并能够方便地查询有关文献,现从2006年国内15种有关图像工程重要中文期刊的共112期上发表的3 013篇学术研究和技术应用文献中,选取出711篇属于图像工程领域的文献,并根据各文献的主要内容将其分别归入图像处理、图像分析、图像理解、技术应用和综述5个大类,然后进一步分入23个专业小类(与去年相同)。在此基础上还对这些文献进行了统计和分析。根据统计分析结果可看到我国图像工程在2006年许多新进展的情况。特别值得指出的是,在上述15种期刊上所发表的图像工程文献数量在2006年达到历史最高,显示了图像工程研究在中国继续发展的趋势。