数字图书馆中的智能推荐技术研究

为构建一种精确性较高的智能信息技术模型,对蚁群算法、SOM网络进行分析与研究,并基于两者构建智能推荐技术,运用该技术完成模型的建立与更新。最后利用已建模型对目前较通用的读者原始流通信息记录进行测试,验证结果表明该技术的个性化信息服务的准确率较高,且具有较高理论意义与应用价值。     

科学知识图谱：别样视角扫描《编辑学报》

科学知识图谱是科学计量学研究领域新的研究方法,为期刊研究提供了重要手段。下载中文社会科学引文索引（CSSCI）收录《编辑学报》1998-2009共12年的题录数据,区别于传统期刊文献计量方法,从作者同被引、关键词共现、机构合作、作者合著、期刊共被引、文献共被引等方面绘制科学知识图谱,快速扫描图谱蕴含的信息,揭示期刊的载文及其学术影响特征。     

基于超图设计模型的用户创造内容产品族设计映射研究

用户创造内容(UGC)近年来备受关注。UGC的聚合利用能创造巨大价值。本文研究UGC产品族设计问题。首先,通过应用公理设计理论,将问题转换为映射研究,解决了映射问题,也就解决了产品族设计问题。接着,针对公理设计理论中提供的Z型映射方法的局限性,结合超图理论,建立了超图设计模型六元组,并在此基础上,分别研究了功能域和物理域的域间映射、域内映射的过程,提出了新的映射方法:倒Z型映射和尖塔型映射,并对映射结果的评价与优化提出了一种算法思想。最后,以在线产品评论的产品族设计为例进行了应用说明。实例分析证明,本文提出的映射方法是可行的。     

Handling multi-lean measures with simulation and simulated annealing

This paper describes a simulation-based approach for developing a lean production system of multi-lean measures. Three lean measures are defined to characterize the leanness of the underlying production system: productivity, cycle time, and work-in-process inventory. An optimized setting to certain operational parameters is determined so that a best tradeoff of the three lean measures is reached. The problem formulation results in a multi-objective optimization problem with no closed-form definition of problem objective functions and constraints. The solution approach utilizes Discrete Event Simulation (DES) to deploy lean techniques and model lean measures under process variability and plant constraints and dynamics. A direct search method (i.e., Simulated Annealing (SA)) is used to search of problem domain. A model-based Value Mapping (VM) is used for combining the conflicting multi-lean measures and guiding the SA search for optima. The DES model is also used to develop a future state dynamic Value Stream Map (VSM) of the optimized production process. The approach is applied to an example production system where the capacity of material handling conveyors and the size of maintenance crew are optimized to develop a lean system in terms of three lean measures. Little’s formula is used to verify the simulation assessment of lean measures. Optimization results are also used to demonstrate the conflict among lean measures, the impact of process variability on lean measures, and the role of VM in reaching an efficient tradeoff of multi-lean measures.     

一类奇完全数的相异素因子个数

奇完全数的存在性问题是一个著名的数论难题.研究了不被3整除的奇完全数相异素因子个数,证明:如果n是奇完全数,则ω(n)≥16,其中ω(n)表示为奇完全数n相异素因子的个数.     

中国极地研究知识图谱

利用前沿信息计量工具对维普数据库中《极地研究》13年载文进行分析,以可视化知识图谱的方式展示我国极地研究领域的研究热点与发文网络等。通过研究发现我国研究热点主要集中在南极、北极以及海冰等方面,同时极地研究领域学者间合作广泛。     

基于思维导图的大学多媒体课堂教学改革

当代社会、职场要求大学毕业生除具备的专业知识外,还要具备学习能力、协作能力和团队意识,这就要求大学的课堂教学改革势在必行。针对多媒体课堂教学存在的问题,提出将思维导图应用到多媒体课堂教学。通过教学实践证明,提高了课堂教学效率,提高了教学质量,提高了学生的学习、记忆、创造思维等综合能力。     

测绘技术在地质勘查中的应用及发展方向浅析

地质测绘是地质勘查的一项基础性工作,主要包括控制测量、地形测量、勘探网测量、勘探线剖面测量、勘探坑道测量、钻孔及地质点的定位测量、矿区勘界测量等工作。目前,是常测绘技术与GPS定位技术并存的时代,以”3S”空间信息技术为主导,以常规测绘技术为辅的测绘局面还将持续一段时间,但高科技、自动化、实时化和数字化、多功能将是地质测绘技术不可逆转的发展趋势。     

现代测绘技术的作用及发展趋势

近些年来,现代测绘技术在学科理论、技术水平和应用范围上都发生了重大变革,其对人类研究地球和自然环境、解释某些自然现象以及解决社会发展和国民经济中的重大问题等都有着重要作用。文章阐述了现代测绘技术的作用及发展趋势。     

Forty years of the International Journal of Information Management: A bibliometric analysis

In 2019, the International Journal of Information Management (IJIM) celebrated its 40th year of publication. This study commemorates this event by presenting a retrospect of the journal. Using a range of bibliometric tools, we find that the journal has grown impressively in terms of publication and citation. The contributions come from all over the world, but the majority are from Europe and the United States. The journal has mostly published empirical articles, with its authors dominantly using quantitative methodology. Further, the culture of collaboration has increased among authors over the years. The journal publishes on a number of including managing information systems, information technologies and their application in business, technology acceptance among consumers, using information systems for decision making, social perspectives on knowledge management, and information research from the social science perspective. Regression analysis reveals that article attributes such as article order, methodology, presence of authors from Europe, number of references, number of keywords, and abstract length have a significant association with the citations. Finally, we find that conceptual and review articles have a positive association with citations.