JALIS专题数据库的调查分析与对策思考

专题数据库的建设是JALIS重点建设的三类资源之一。通过对JALIS三期专题数据库的建设情况调查可以得出结论:JALIS专题数据库建设具有主题丰富、参与面广、多个建库平台并存等特点,但也存在建设能力参差不齐、数据量偏少、数据库规模小、数据更新维护滞后等问题,应采取协作策略、推广策略与服务策略等相关策略加以解决。     

弘扬中华文化 共建共享资源——陕西地方文献专题数据库建设述评

本文描述了全国文化信息资源共享工程建设中,各地公共图书馆在地方文献专题数据库方面的成绩;介绍陕西省文化信息资源共享工程概况,以省级分中心陕西省图书馆所建地方文献专题数据库为例,阐述了专题数据库的建库实践及特色。     

学术用户的数字信息需求研究

论述通过访谈法获取的高校学术用户对数字信息需求的新特点,从需求内容、需求满足方式与行为障碍、需求特征与需求心理三个方面进行阐述;基于作为网络信息资源深层组织模式的学科导航系统的需求满足现状的相关分析,指出学科导航系统建设应以用户需求为导向,并提出“用户中心模式”学科导航系统的新概念,同时对其必要性进行论述。     

基于校企合作人才培养模式的《网络数据库技术》课程改革

研究了如何以工作过程为导向和任务驱动为核心的思想来进行“数据库技术”课程的改革,以及在新的教学模式下课程的实施方案,从而达到明确学生学习目标,调动学生积极性,培养学生工作能力和职业素养的目标。     

Characterizing navigation in interactive learning environments

Interactive learning environments (ILEs) are increasingly used to support and enhance instruction and learning experiences. ILEs maintain and display information, allowing learners to interact with this information. One important method of interacting with information is navigation. Often, learners are required to navigate through the information space of an ILE, a process which can be quite difficult and cognitively exacting as the information space becomes very large and complex. Proper design can make this process less exacting and, at the same time, facilitate better learning of the information space. However, this is not easy to do, especially for ILEs. Frameworks can assist in the effective analysis and design of interactive environments. However, there is lack of conceptual frameworks for guiding the analysis and design of navigation in ILEs. This paper tries to address this issue by presenting a framework which can be used to characterize navigation within ILEs. To create this framework, this paper brings together research from various disciplines, such as human-computer interaction design, educational multimedia design, cognitive technologies and learning sciences. This framework prescribes a three-stage process for designing and analyzing navigation: 1. content structuring; 2. information navigation modeling; 3. interface presentation structuring. By bringing these three stages together, it is intended to provide a conceptual framework to assist and guide designers in the proper analysis and design of navigation in ILEs.     

Language and Spatial Cognition in Route Navigation

The purpose of this study is to investigate the contrast between using street names or landmarks to process spatial in?structions. The study confirms the special cognitive status of landmarks in the ...     

基于组合导航的四旋翼飞行器控制系统研究

根据刚体动力学原理,建立了四旋翼飞行器的动力学模型,利用捷联惯导和GPS组合作为四旋翼飞行器的导航系统,采用方向余弦矩阵的变换方法,实现了对飞行器的姿态解算;采用卡尔曼滤波算法实现姿态角信号的校正,实现了四旋翼飞行器的导航;采用基于PID算法的悬停状态的控制策略,实现了四旋翼飞行器的垂直起降和稳定的悬停．     

图书馆自动化集成系统的评价标准

本文从系统性能、系统的运行模式、数据库管理系统、数据的标准化等六个方面分析了图书馆自动化集成系统软件的评价标准。参考文献10。     

数据库设计模式初探

目前设计模式在软件工程中已得到广泛应用。本文针对数据库设计提出了定义主键、主键生成器实现的主键模式,实现一对一、一对多、多对多、树状这几种关系模式,通过使用这些模式可以使得数据库设计更加高效、完善。参考文献5。     

构建军校重点学科信息导航系统的思考

文章论述构建军队院校重点学科信息导航系统的必要性和导航系统的信息采集范围,提出了应解决的有关问题及相应解决办法,如搜索引擎、中文信息自动标引和分类、数据并发处理、导航系统相关服务等.