共查询到20条相似文献，搜索用时 500 毫秒
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参数化绘图功能是设计者对设计的图形对象进行几何约束和标注约束并确保在对象参数修改后还保持原设计图形特定的关联及尺寸关系。这个功能使Auto CAD对象变得比以往更加智能。参数化设计最大的好处就在于对于结构相同而尺寸不同的零件可以只设计一个标准模板,通过修改尺寸参数即可实现模型的同步更新,这样可大大提高生产力。 相似文献
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新型数字档案网络管理系统设计 总被引：1，自引：0，他引：1
文章阐述了基于Web技术的分布式网络档案管理系统的设计与开发。文章主要讨论了应用程序的系统体系结构;DNA开发模型,及系统数据访问层、商业规则层、表示层的设计和实现。 相似文献
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本文针对现阶段远程教学系统中存在的缺点和不足,将MAS技术引入到远程教学系统中．以建构主义理论为指导,提出了一个突出个性化、强调多种学习环节协作的MAS远程教学系统的设计方案．并以现代教育技术课程为例阐述了如何基于此系统开展教学． 相似文献
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面向用户的数字图书馆信息服务系统构建 总被引：5，自引：0，他引：5
面向用户的数字图书馆服务系统是一个以网络化数字化知识资源为基础．以用户需求为中心，以先进的信息技术为手段的资源、技术、服务与用户利用一体化的数字资源平台。其体系结构应该是一种三角形的三层客户／服务器模式的“浏览器-web服务器一数据库服务器”结构。该系统的逻辑模型包括了4个层次：服务层、功能层、数字对象层与平台层。而模型实现的关键技术是信息过滤技术、学科信息门户技术及信息智能代理技术．需解决的问题有元数据问题、互操作问题及用户资源管理问题。 相似文献
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本文介绍了现代远程教育的相关概念和流媒体技术的相关知识,设计和实现了基于流媒体技术的现代远程教学系统。实践证明,该系统不仅有利于教学资源的充分利用,而且也有利于未来开放教育的构建。 相似文献
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本系统采用三层模型分别是HTML（用户层）＋jsp和servlet（表示和业务逻辑层）＋数据库层实现办公自动化系统；该系统采用三层功能独立的模块设计系统具有很好的可维护性和可扩展性。 相似文献
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葛宇春 《自然科学博物馆研究》2017,2(2):40-47
展品是科技馆有别于其他教育机构的主要教育资源,但如果展品仅是单纯展示而不辅之以必要的教育活动,其教育功能往往难以充分实现。通过考察分析和开发教育活动的实践,笔者认为:欲充分实现展品的教育功能,引导观众深入思考、主动探索,须通过教育活动对其教育资源进行“二次开发”。本文主要介绍了科技馆展品“二次开发”的概念、必要性、类型,并结合具体案例论述了其实现的方法与途径。 相似文献
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鉴于大学校园学生抄袭行为日趋严重,但有“大学心脏”之称的图书馆对于此问题却尚未有较实质的参与,乃基于大学图书馆原本具有的角色,并结合其针对各类型学术文献进行征集处理、典藏管理以及推广服务,进而探讨有效抑制抄袭行为的策略架构。建议以保留可能涉及抄袭行为的证据、符合教育宗旨的奖励措施、增强抗拒抄袭的免疫能力以及提高抑制策略的整体效能等措施作为基础,同时善加利用恰当的策略工具,并通过正向引导、保存加值、传播分享、测试施行等四个重要步骤,以建构出可供参考、施行的建议方案。 相似文献
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审稿是期刊筛选论文、确保刊发论文质量的重要手段,审稿过程可能会受到审稿人、编辑和作者有意或无意的偏倚的影响而导致审稿结果失实。本文总结了医学论文常见审稿偏倚,如内容偏倚、保守偏倚、利益冲突、作者身份或地域偏倚等问题,对目前国内外期刊现有的审稿模式进行讨论并提出建议。各期刊可结合自身实际情况,采取一种或多种审稿模式;谨慎选择审稿人,既要“对口”送审,又要避免利益冲突;避免审稿一票否决,严格落实三审制度;尊重作者的科研成果,建立作者申诉机制。基于此,确保论文的优势得到承认,弱点得到剖析,为作者提供具有建设性的修改意见,帮助作者提高科学研究及论文撰写的水平,最大限度地减少审稿过程中出现偏倚。 相似文献
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为探究如何做好出版专业技术人员继续教育工作,建设高素质专业化出版人才队伍,文章基于《出版专业技术人员继续教育规定》提出了关于深入贯彻落实文件精神、优化出版专业技术人员继续教育的五点建议,以期为相关部门的具体实施提供参考。建议内容包括：提升政治素养,强化“服务大局”意识;开展需求调研与分析,注重继续教育的针对性;整合多方力量,形成教育资源统筹新格局;分级分类培训内容,统筹规划继续教育课程;综合运用多种教学方法,实现继续教育形式多样化。 相似文献
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《图书馆管理杂志》2013,53(1-2):65-74
Abstract Institutions, as we know, are quickly embracing distance education, in the forms of online or Web-based courses and programs at phenomenal rates. Oftentimes, however, significant institutional structures, including such areas as registration, advising, library, and technical support are overlooked until too late. Institutions must have clear, well-planned strategies in place in order to maximize their students' learning experiences and overall satisfaction with distance education programs to avoid attrition and maximize retention. This paper provides many useful and easy to implement strategies for institutions considering distance education, as well as for those already engaged in serving students online. In particular, this paper explores experiences of students pursuing the Master of Library and Information Science degree through a Web-based program. Their challenges will be described, and the institutional responses and solutions will be offered. 相似文献
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Krister Lindén 《Information Retrieval》2006,9(3):295-310
Technical term translations are important for cross-lingual information retrieval. In many languages, new technical terms
have a common origin rendered with different spelling of the underlying sounds, also known as cross-lingual spelling variants
(CLSV).
To find the best CLSV in a text database index, we contribute a formulation of the problem in a probabilistic framework, and
implement this with an instance of the general edit distance using weighted finite-state transducers. Some training data is
required when estimating the costs for the general edit distance. We demonstrate that after some basic training our new multilingual
model is robust and requires little or no adaptation for covering additional languages, as the model takes advantage of language
independent transliteration patterns.
We train the model with medical terms in seven languages and test it with terms from varied domains in six languages. Two
test languages are not in the training data. Against a large text database index, we achieve 64–78 % precision at the point
of 100% recall. This is a relative improvement of 22% on the simple edit distance. 相似文献
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Detlefsen EG 《Medical reference services quarterly》2004,23(4):87-94
The article describes an innovation in MLIS education for medical librarianship, with an introduction to the FastTrack, the distance education program at the University of Pittsburgh's library and information science school, together with an overview of a model program linking the biomedical library at Vanderbilt University with the School of Information Sciences in Pittsburgh. Admissions requirements and specific curriculum for the distance education master's degree are detailed in an FAQ format. 相似文献
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《图书馆管理杂志》2013,53(1-2):225-231
Abstract Distance education is a learner-centered system of education. The librarians engage in developing and delivery of services in distance education relevant to both content and process. Librarians need to recognize the role of modern information technologies as learning resources in students' learning pursuits. This represents a major shift from a conventional model of the library-centered didactic style to a more learner-centered and task-based facilitating style. This change needs effective training of the professionals engaged in distance librari-anship. The paper analyzes the present day role of librarians in distance education in India; discusses the rationale for the training of librarians involved in distance education; and finds out the areas of training, and methods and strategies that are to be adopted in the distance education institutions in the country. 相似文献
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《Medical reference services quarterly》2013,32(4):87-94
Abstract The article describes an innovation in MLIS education for medical librarianship, with an introduction to the FastTrack, the distance education program at the University of Pittsburgh's library and information science school, together with an overview of a model program linking the biomedical library at Vanderbilt University with the School of Information Sciences in Pittsburgh. Admissions requirements and specific curriculum for the distance education master's degree are detailed in an FAQ format. 相似文献