学校网络机房故障与维修分析

从目前来看,学校网络机房的管理中管理者更多关注的是技术上的维护和保障工作,缺乏维修理念、缺乏对故障信息、维修信息的系统分析、缺乏对维修的效一费分析以及有效度的分析,因此,网络机房的维修工作存在着盲目性,缺乏计划性和目标性。所以应加强网络机房的科学化管理,加强对机房故障信息的统计分析,预防并减少故障,改善网络机房设备的技术状态;加强可靠性为主的维修理念,提高机房维修的有效度,确保机器本身的正常运转,延长使用寿命,更保障教学的顺利进行：本文通过对网络机房故障信息和维修信息的记录分析,得出对机房故障、维修方面有实效性的管理措施和对策。     

农业专家系统在农业高校和京郊农村的发展

农业专家系统是一项在信息技术中结合农业特点发展起来的高新技术。它对于提高广大农业人员的科技文化素质,提升农业科技自主创新能力,实现农业生产的跨越发展具有特别重要的作用。高等农业院校和广大农村又是农业专家和农业知识高度密集的地方,更应该使农业专家系统拥有广阔的用武之地。     

脚本技术在游戏引擎中的应用

脚本技术在游戏引擎中的应用是近年来游戏开发一个新的趋势。本文探讨了脚本技术在游戏引擎中的作用,并以一种脚本语言Lua为例,详细分析了脚本与引擎通信的原理。     

Information gathering and searching approaches on the Web

The information accessible through the Internet is increasing explosively as the Web is getting more and more widespread. In this situation, the Web is indispensable information resource for both of information gathering and information searching. Though traditional information retrieval techniques have been applied to information gathering and searching in the Web, they are insufficient for this new form of information source. Fortunately some Al techniques can be straightforwardly applicable to such tasks in the Web, and many researchers are trying this approach. In this paper, we attempt to describe the current state of information gathering and searching technologies in the Web, and the application of AI techniques in the fields. Then we point out limitations of these traditional and AI approaches and introduce two aapproaches: navigation planning and a Mondou search engine for overcoming them. The navigation planning system tries to collect systematic knowledge, rather than Web pages, which are only pieces of knowledge. The Mondou search engine copes with the problems of the query expansion/modification based on the techniques of text/web mining and information visualization. Seiji Yamada, Dr. Eng.: He received the B.S., M.S. and Ph.S. degrees in control engineering and artificial intelligence from Osaka University, Osaka, Japan, in 1984, 1986 and 1989, respectively. From 1989 to 1991, he served as a Research Associate in the Department of Control Engineering at Osaka University. From 1991 to 1996, he served as a Lecturer in the Institute of Scientific and Industrial Research at Osaka University. In 1996, he joined the Department of Computational Intelligence and Systems Science at Tokyo Institute of Technology, Yokohama, Japan, as an Associate Professor. His research interests include artificial intelligence, planning, machine learning for a robotics, intelligent information retrieval in the WWW, human computer interaction, He is a member of AAAI, IEEE, JSAI, RSJ and IEICE. Hiroyuki Kawano, Dr.Eng.: He is an Associate Professor at the Department of Systems Science, Graduate School of Informatics, Kyoto University, Japan. He obtained his B.Eng. and M.Eng. degrees in Applied Mathematics and Physics, and his Dr.Eng. degree in Applied Systems Science from Kyoto University. His research interests are in advanced database technologies, such as data mining, data warehousing, knowledge discovery and web search engine (Mondou). He has served on the program committees of several conferences in the areas of Data Base Systems, and technical committes of advanced information systems.     

三维模型搜索引擎的研究进展*

首先简要介绍了三维模型搜索引擎的发展概况,然后讨论了三维模型搜索引擎的关键技术及相关的研究进展,最后指出了三维模型搜索引擎进一步的发展前景。     

三维图形引擎中骨骼蒙皮动画的一种实现方法*

提出了三维图形引擎中骨骼蒙皮动画的一种实现方法,即将现有的关节动画与单一网格动画相结合,利用骨架的继承变换和顶点混合技术使骨骼蒙皮动画平滑逼真。实验表明该方法有良好的显示效果,并具有较好的实时性,且占用的存储空间不大,能够满足当前三维图形引擎对动画技术的要求。     

ArcSDE矢量数据访问类的设计与实现*

ArcSDE是空间数据库引擎,允许用户用关系数据库管理系统（RDBMS）存储和管理空间数据。设计并实现了基于.NET平台的ArcSDE矢量数据访问的C++类库。这些类按托管和非托管两层进行设计,数据访问功能由非托管类调用ArcSDE C API 实现,托管类对外公开非托管类的功能,可被任何.NET兼容的程序设计语言调用。     

南渡江左岸排涝工程研究

南渡江下游左岸是洪涝灾害十分频繁的洪泛区,一般年份洪水即可入侵农田和村庄,对农业生产造成极大损失.如遇20年一遇洪水,项目区积水深度会超过1 m左右,持续时间达2～3d,为排出防护区内涝水,设计应用ArcGIS分析地形并划分排涝分区,通过调蓄计算确定排涝工程规模.     

新疆准南煤田砂沟矿区地质信息可视化研究

大型煤田的建设管理涉及大量不同种类、不同层次、不同方面的繁多信息。同时这些信息又具有空间性、动态性、多源性的特点。传统的管理信息系统很难有效地进行上述数据的更新、管理和检索,且难以反映各种对象及相关信息之间的空间关系,目前大多数GIS系统只能处理二维数据。针对目前煤田信息系统中存在的问题,本文开展了煤田信息管理系统的研究,利用GIS技术将地理信息与煤田数据结合,以ArcGIS为系统开发平台,以Arc Engine和Visual Basic6.0为开发工具,Access为后台数据库,开发实现了适应大型煤田建设管理具有真三维特点的煤田信息管理系统。     

ArcGIS Server分布式技术实现与优化

为了解决硬件资源难以满足WebGIS信息增长的需求,提出了ArcGIS Server分布式技术实现企业级GIS应用程序的综合平台.使用WebService技术,在业务逻辑层和空间信息层加入分布式处理服务器,能够真正实现WebGIS系统逻辑上和物理上的分布式处理服务.采用Web Service技术和ArcServer技术可以将信息量巨大的WebGIS系统分解成多个Web Service的分布式服务,从而解决硬件资源上的问题,同时对ArcGIS Server的性能进行最小的服务器资源占用率、最小化的数据传输量、最合适的图像格式和最佳的代码执行效率的优化,提升整个系统的性能.