甘肃省粮食综合生产能力不同阶段的影响因素分析

根据1978～2008年甘肃省粮食总产量、单位面积产量和人均产量等粮食生产的相关资料,对粮食生产情况进行了阶段分析;选用农膜使用量、粮食播种面积、有效灌溉面积、化肥施用量、农业机械动力、受灾面积、价格指数等指标,建立了C-D生产函数,分析了不同阶段粮食综合生产能力变动的原因.结果表明:物质投入、科技投入和政策因素是影响甘肃省粮食综合生产能力的三个主要因素.提示甘肃省粮食综合生产能力仍然偏低,但增产潜力较大.     

掘进工作面过断层运输与回风巷道支护及效果分析

断层破碎区巷道有效支护对于煤矿安全生产具有重要意义.以山西沁和能源集团九鑫煤业有限公司205工作面运输与回风巷道过断层为试验对象,采用分析法对工作面运输与回风巷道过断层进行分析.提出冒落区顶板注浆治理、破碎围岩超前预注浆、锚杆+锚索+网的联合支护方式并对支护后的巷道围岩变形进行监测.监测结果表明,巷道顶板下沉量为60 m m、底鼓量为50 m m、两帮移近量为81 m m,巷道变形量较少,巷道得到了有效控制.     

China''''s Stock Market Wave

The annual meeting of the World Economy Forum was held in Davos,a little town in Switzerland,on January 23rd to the 27th this year,with the theme"the Power fo Collaborative Innovation",over 2500 celebrates from ture political and cconomic circles of more than 80 countries and challengred logether to talk about the future of the global economy in 2008,A Forum for the problems and challenges that face whole world,some of the keywords which drew attention during the event were:the U.S.subprime mortgage crisis,soaring energy prices,the economic slowdown in the U.S.ermerging economic bodies,authority funds and the general unpredictable nature of the global economy.     

中国水资源研究热点及演化的可视化分析

以"水资源"为关键词,从CNKI数据库筛选出2010—2020年的3070篇CSSCI检索文献,基于文献计量CiteSpace可视化分析软件,从文献的数量、作者合作、机构合作和关键词等方面,开展近10年中国水资源研究现状与热点分析.研究表明:近10年,水资源研究一直是中国政府管理部门和学术界关注的研究热点;水资源承载力、水资源管理、水资源利用、水资源配置等作为高频关键词,成为学者们最为集中的研究热点;从发文机构分布来看,主要集中在河海大学、中国科学院大学、武汉大学、郑州大学4所高校和中国水利水电科学研究院、中国科学院地理科学与资源研究所2家科研院所,且发文机构之间保持了较为密切的交流合作;从水资源研究的发展趋势看,水资源调控与经济社会发展的适应性、水资源与产业结构的耦合协调成为未来的研究重点.     

基于复杂网络的产业核心技术识别预测研究——以能源产业为例

摘?要：立足情报研究视角,探索建立科学完整的科技文献信息挖掘及核心技术识别预测方法体系,揭示战略前沿领域的核心技术,明确核心技术的重点研发方向和潜在研发趋势。在界定核心技术概念及类型的基础上,利用文献知识聚类识别热点技术,通过RAKE算法抽取技术主要研究内容,以各项热点技术为节点构建复杂网络,通过节点二次聚类和可视化方法展现技术结构网络,采用结构洞理论分析网络和节点特性,从中遴选出关键技术;利用复杂网络链路预测算法,预测技术结构网络中的缺失边产生连接的可能性,判断现有热点技术未来的交叉融合,以此识别潜在新兴技术。以能源产业为例开展实践,对该领域的科技文献开展深入挖掘,揭示领域核心技术,初步验证了方法的可操作性和有效性。     

中国科技创新研究热点及演化的可视化分析

针对C N K I数据库中1998—2020年科技创新研究的2853篇文献,运用科学计量学方法,对中国科技创新的研究热点及演化开展研究.借助CiteSpace 5.7.R2可视化工具,绘制中国科技创新研究的知识图谱,主要包括关键词共现分析和突变分布、关键词聚类分析、关键词时间线分析和时区分析.研究表明,创新是引领发展的第一动力,中国始终坚持创新驱动发展,把科技创新摆在国家发展全局的核心位置,加快建设科技强国.但科技创新研究在不同时期的侧重点有所不同:2000—2006年,农业科技创新、高校科技创新、研究型大学、科技创新体系与机制等成为主流的研究热点;2006—2012年,科技创新体系、指标体系、知识产权、科技创新对策、技术创新、科技创新评价、科技创新能力、科技创新人才成为研究热点;2012—2020年,中国科技创新的研究热点主要集中在科技创新政策、创新驱动等方面.     

The Tourism System Research Categorization Framework

This analysis produced a tourism system research categorization framework comprising mutually exclusive subject areas to classify the keywords in academic journal articles. The primary research goals were to develop this framework and then assess the frequency levels of specific tourism research subject areas in the 10-year period of 2002–2011. A database of 37,918 author-selected keywords from 9,588 research articles in 31 tourism, hospitality, and leisure journals was created. Using the proposed framework, the database was divided into six main categories (destination; demand; travel; marketing; geographical areas; and generic terms) and 61 sub-categories. The destination category captured the most keywords, followed by demand and then marketing.     

Meaningful involvement of municipal purchasing departments in the procurement of consulting services: Case studies from Ontario, Canada

This paper describes the types of activities that were associated with meaningful involvement of municipal purchasing departments in the procurement of consulting services in Ontario, Canada. Included is a discussion of some of the key contextual factors found to enable meaningful involvement and the type of value that results as it relates to the needs of the client department and the overall goals and objectives of the municipalities as a whole. Ten case studies were conducted that involved in-depth interviews with twenty case study informants including ten purchasing agents, nine client department managers, and a consultant. The findings provide a basis for increasing the involvement of municipal purchasing departments in acquisition processes for these services and address some very important gaps in a particularly arid body of research related to local government purchasing. A number of testable hypotheses and research questions that may enable future researchers to address some of the gaps identified by this work are also presented.     

技术管理研究的分布特征——整体观视角

以Web of Science数据库收录的发表于2006—2015年的808篇技术管理文献为研究样本,通过文献计量分析了技术管理研究的学科分布、学术期刊分布、地区分布、研究机构分布和高产学者分布,并通过绘制技术管理关键词共现知识图谱分析了当前技术管理研究领域分布。结果表明:整体观视角下的技术管理研究呈现出多学科交叉的特征,以管理理论为支撑、基于运营管理视角进行分析、在商业领域进行应用是当前技术管理研究的主流范式;技术管理的研究力量主要以发达国家为主,但开始向中国、南非和巴西等新兴经济体国家转移;整体观视角下,技术管理研究领域主要包括技术管理内涵研究、技术管理工具研究、技术管理教育研究、技术知识管理研究、创新管理研究和特定领域     

Research Trends of Marketing: A Bibliometric Study 1990–2017

Abstract

Interest in the role of marketing has grown in recent decades due to its impact in brand value, value creation for customers, profitability of customer base, and organizational results. The paper shows an overall view on marketing research to explore the development of research trends, showing the high-frequency keywords at different time periods. Using bibliometric methods, the research analyzes publications between 1990 and 2017 found in the Web of Science and Scopus databases. The paper shows the evolution of keywords to reveal emerging topics as demonstrated in the connections network which includes “advertising,” “consumer behavior,” “trust,” “innovation,” and “customer satisfaction.”