针对目前少数民族语言方面热点关键词提取算法研究较少,而且精度和效率不高这一问题,提出一种哈萨克文网络热点关键词提取方法。将预处理后得到的文本利用多重因子加权改进的TF-IDF算法进行关键词提取,后续根据其位置和频率信息进行关...针对目前少数民族语言方面热点关键词提取算法研究较少,而且精度和效率不高这一问题,提出一种哈萨克文网络热点关键词提取方法。将预处理后得到的文本利用多重因子加权改进的TF-IDF算法进行关键词提取,后续根据其位置和频率信息进行关键词组配,得到候选热点关键词集合;结合TF-PDF算法和媒体关注度思想,构造关键词热度评分标准公式KHD(Keywords Hot Degree),实现对热点关键词的提取。实验结果证明此方法可行有效,并且在提取精度和效率上都有显著提高。展开更多
以外文数据库Web of Science、Scopus收录的八大项目管理领域知名期刊为文献来源,以BIM为搜索关键词,对搜索到的研究文献进行分类。以内容分析法为研究方法,对收集到的BIM设计阶段应用研究的文献进行文献来源、研究内容、研究趋势等方...以外文数据库Web of Science、Scopus收录的八大项目管理领域知名期刊为文献来源,以BIM为搜索关键词,对搜索到的研究文献进行分类。以内容分析法为研究方法,对收集到的BIM设计阶段应用研究的文献进行文献来源、研究内容、研究趋势等方面分析,并提出目前在BIM设计应用方面的研究热点和趋势。展开更多
随着旅游需求的不断提升,酒店业正在朝着更加人性化、细致化的方向发展,酒店无障碍服务与管理是体现酒店人性化的重要依据。文章以Web of Science核心数据库为基础,运用CiteSpace可视化分析软件对346篇酒店无障碍硬软件的服务与管理的...随着旅游需求的不断提升,酒店业正在朝着更加人性化、细致化的方向发展,酒店无障碍服务与管理是体现酒店人性化的重要依据。文章以Web of Science核心数据库为基础,运用CiteSpace可视化分析软件对346篇酒店无障碍硬软件的服务与管理的文献进行分析。研究发现:酒店无障碍相关研究在20世纪末期之前发展缓慢,随着旅游业的快速发展以及社会文明的进步逐渐得到积极推动,目前迎来了良好的发展机遇;文献数量与机构分布有所差异,并未形成较为集中的研究系统,期刊发表领域呈分布多样化、交融性状态;研究内容主要分为硬件设施和环境、软件服务与管理,研究热点主要集中在酒店可进入性、无障碍硬软件条件、无障碍住宿需求与体验等问题的探讨;目前研究趋势呈学科交融性、服务实践性方向发展,研究着重对员工服务及态度、无障碍客房设计、无障碍体验、无障碍住宿偏好、社会支持等进行深入探讨。展开更多
Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results sho...Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results show that research output in this field has been increasing since 2005.Land and industry fields in resource research,economics in ecological research,and climate and urban environments in environmental research have been studied from 1992–2011.Keywords analysis discovered that ＂Land Use＂ and ＂Heat Island Effect＂ were major keywords,making up 0.15% and 0.09% of the total frequency,respectively.＂Heat Island Effect＂ and ＂Climate Change＂ were the most recent popular keywords.Main theories were derived from ecology,mathematics,resource environmental economics and environmental science.Ecological footprint has been a core theory since 2002.The stochastic impacts by regression on population,affluence and technology model（STIRPAT）,Environmental Kuznets Curve（EKC）,and slope,land use map,excluded area,urban area,transportation map and hillside area model（SLEUTH） are the latest popular theories.During 1992–2011,the main research methods can be divided into four groups： statistics（65.17%）,systems（13.11%）,mechanisms（11.79%） and evaluation（9.93%）.Grey System Analysis from system methods and rescaled range（R/S） analysis from evaluation are the latest popular methods.Topics from macro subfields,including land use,heat island effects,water resources and the agricultural ecological environment received more attention than micro subfields such as urban environmental health problems.As urbanization problems evolve,resource environmental economic comprehensive models will advance with modeling progress and some models,such as STIRPAT and land use change simulation models,will be developed for evaluation and simulation of the ecological environmental impacts of Chinese urbanization.展开更多
文摘针对目前少数民族语言方面热点关键词提取算法研究较少,而且精度和效率不高这一问题,提出一种哈萨克文网络热点关键词提取方法。将预处理后得到的文本利用多重因子加权改进的TF-IDF算法进行关键词提取,后续根据其位置和频率信息进行关键词组配,得到候选热点关键词集合;结合TF-PDF算法和媒体关注度思想,构造关键词热度评分标准公式KHD(Keywords Hot Degree),实现对热点关键词的提取。实验结果证明此方法可行有效,并且在提取精度和效率上都有显著提高。
文摘以外文数据库Web of Science、Scopus收录的八大项目管理领域知名期刊为文献来源,以BIM为搜索关键词,对搜索到的研究文献进行分类。以内容分析法为研究方法,对收集到的BIM设计阶段应用研究的文献进行文献来源、研究内容、研究趋势等方面分析,并提出目前在BIM设计应用方面的研究热点和趋势。
文摘随着旅游需求的不断提升,酒店业正在朝着更加人性化、细致化的方向发展,酒店无障碍服务与管理是体现酒店人性化的重要依据。文章以Web of Science核心数据库为基础,运用CiteSpace可视化分析软件对346篇酒店无障碍硬软件的服务与管理的文献进行分析。研究发现:酒店无障碍相关研究在20世纪末期之前发展缓慢,随着旅游业的快速发展以及社会文明的进步逐渐得到积极推动,目前迎来了良好的发展机遇;文献数量与机构分布有所差异,并未形成较为集中的研究系统,期刊发表领域呈分布多样化、交融性状态;研究内容主要分为硬件设施和环境、软件服务与管理,研究热点主要集中在酒店可进入性、无障碍硬软件条件、无障碍住宿需求与体验等问题的探讨;目前研究趋势呈学科交融性、服务实践性方向发展,研究着重对员工服务及态度、无障碍客房设计、无障碍体验、无障碍住宿偏好、社会支持等进行深入探讨。
基金National Natural Science Foundation of China(4127155641101117)
文摘Based on an urbanization research database,a bibliometric analysis of Chinese ecological environmental research on urbanization was conducted that examined output,focused fields,topics,theories and methods.Results show that research output in this field has been increasing since 2005.Land and industry fields in resource research,economics in ecological research,and climate and urban environments in environmental research have been studied from 1992–2011.Keywords analysis discovered that ＂Land Use＂ and ＂Heat Island Effect＂ were major keywords,making up 0.15% and 0.09% of the total frequency,respectively.＂Heat Island Effect＂ and ＂Climate Change＂ were the most recent popular keywords.Main theories were derived from ecology,mathematics,resource environmental economics and environmental science.Ecological footprint has been a core theory since 2002.The stochastic impacts by regression on population,affluence and technology model（STIRPAT）,Environmental Kuznets Curve（EKC）,and slope,land use map,excluded area,urban area,transportation map and hillside area model（SLEUTH） are the latest popular theories.During 1992–2011,the main research methods can be divided into four groups： statistics（65.17%）,systems（13.11%）,mechanisms（11.79%） and evaluation（9.93%）.Grey System Analysis from system methods and rescaled range（R/S） analysis from evaluation are the latest popular methods.Topics from macro subfields,including land use,heat island effects,water resources and the agricultural ecological environment received more attention than micro subfields such as urban environmental health problems.As urbanization problems evolve,resource environmental economic comprehensive models will advance with modeling progress and some models,such as STIRPAT and land use change simulation models,will be developed for evaluation and simulation of the ecological environmental impacts of Chinese urbanization.
