本文旨在系统刻画世界范围内女性室内居住空间研究知识图谱,通过对当前女性室内居住空间研究热点分析与总结,以客观数据为依据,根据当前研究热点来探究未来发展趋势。以Web of Science数据库中“女性”和“室内居住空间”主题为数据源,...本文旨在系统刻画世界范围内女性室内居住空间研究知识图谱,通过对当前女性室内居住空间研究热点分析与总结,以客观数据为依据,根据当前研究热点来探究未来发展趋势。以Web of Science数据库中“女性”和“室内居住空间”主题为数据源,借助VOSviewer和Cite Space 6.1.R1文献计量可视化软件构建出以研究国家、发文机构、关键词等为节点知识图谱分析,并对女性室内居住空间热点主题和研究前沿进行分析和总结。从1991-2021年,关于女性室内居住空间相关研究热点总体上呈上升趋势。在这一研究领域,研究内容不断丰富,包括性别差异、居住空间环境影响、空间性能、健康评估、室内空气质量。研究方法也在不断丰富。本文希望通过分析和整理该领域研究现状、研究热点和未来可能研究趋势,为研究实施提供更多参考。展开更多
目的通过对中医药治疗冠心病随机对照试验的相关文献进行可视化分析,探索该领域的研究现状、热点及发展趋势。方法以中国期刊全文数据库(CNKI)为数据源进行检索,检索相关文献738篇,将所得数据文件导入到Cite Space 5.0.R1软件,对作者、...目的通过对中医药治疗冠心病随机对照试验的相关文献进行可视化分析,探索该领域的研究现状、热点及发展趋势。方法以中国期刊全文数据库(CNKI)为数据源进行检索,检索相关文献738篇,将所得数据文件导入到Cite Space 5.0.R1软件,对作者、机构和关键词进行共现分析并得到相关图谱。结果通过知识图谱分析发现,中医药治疗冠心病随机对照试验的作者分散作者较多,暂未出现有影响力的作者;研究机构主要是辽宁中医药大学附属医院、辽宁中医药大学附属第二医院、辽宁中医药大学;热点关键词:冠心病、心绞痛、中西医结合治疗、临床效果、临床研究、中药治疗、中医药治疗、不稳定型心绞痛、心律失常、稳定型心绞痛、抑郁症、心力衰竭、心电图、气虚血瘀、益气活血、中医、高血压、心肌缺血、糖尿病、血府逐瘀汤等,并形成10个聚类群。结论中医药治疗冠心病随机对照试验相关文献的发文量逐年增多,中西医结合治疗冠心病是研究热点,通过关键词聚类标签发现,冠心病合并抑郁症、经皮冠状动脉介入治疗术后、室性期前收缩、再狭窄研究及炎症因子评价冠心病受到更多的关注。展开更多
Let B be a Banach space in UMD with an unconditional basis. The boundedness of the θ (t)_type singular integral operators in L p B(R n),(1≤p<+∞) and H 1 B(R n) spaces are discussed.
The purpose of this paper is to investigate the refinement equations of the formwhere the vector of functions = (1, … ,r)T is in (LP(R8))T,1 ≤ p ≤∞, α(α),α ∈ Z5, is a finitely supported sequence of r × r ...The purpose of this paper is to investigate the refinement equations of the formwhere the vector of functions = (1, … ,r)T is in (LP(R8))T,1 ≤ p ≤∞, α(α),α ∈ Z5, is a finitely supported sequence of r × r matrices called the refinement mask, and M is an s x a integer matrix such that limn→ ∞ M-n = 0. In order to solve the refinement equation mentioned above, we start with a vector of compactly supported functions (0 ∈ (LP(R8))r and use the iteration schemes fn := Qan0,n = 1,2,…, where Qa is the linear operator defined on (Lp(R8))r given byThis iteration scheme is called a subdivision scheme or cascade algorithm. In this paper, we characterize the Lp-convergence of subdivision schemes in terms of the p-norm joint spectral radius of a finite collection of some linear operators determined by the sequence a and the set B restricted to a certain invariant subspace, where the set B is a complete set of representatives of the distinct cosets of the quotient group Z8/MZ8 containing 0.展开更多
By using the weighted versions of Journe's covering lemma and its extension to highetdimensions, this paper contributes an atomic decomposition theorem for the weighted H^p(0<p≤1)spaces on product domains, get...By using the weighted versions of Journe's covering lemma and its extension to highetdimensions, this paper contributes an atomic decomposition theorem for the weighted H^p(0<p≤1)spaces on product domains, gets a vector value for the index of the moment conditions whichextends the corresponding result in the case with one--parameter to the case with arbitrarynumber of parameters and solves the problem proposed by S. Y. A. Chang &R. Fefferman.展开更多
文摘本文旨在系统刻画世界范围内女性室内居住空间研究知识图谱,通过对当前女性室内居住空间研究热点分析与总结,以客观数据为依据,根据当前研究热点来探究未来发展趋势。以Web of Science数据库中“女性”和“室内居住空间”主题为数据源,借助VOSviewer和Cite Space 6.1.R1文献计量可视化软件构建出以研究国家、发文机构、关键词等为节点知识图谱分析,并对女性室内居住空间热点主题和研究前沿进行分析和总结。从1991-2021年,关于女性室内居住空间相关研究热点总体上呈上升趋势。在这一研究领域,研究内容不断丰富,包括性别差异、居住空间环境影响、空间性能、健康评估、室内空气质量。研究方法也在不断丰富。本文希望通过分析和整理该领域研究现状、研究热点和未来可能研究趋势,为研究实施提供更多参考。
文摘目的通过对中医药治疗冠心病随机对照试验的相关文献进行可视化分析,探索该领域的研究现状、热点及发展趋势。方法以中国期刊全文数据库(CNKI)为数据源进行检索,检索相关文献738篇,将所得数据文件导入到Cite Space 5.0.R1软件,对作者、机构和关键词进行共现分析并得到相关图谱。结果通过知识图谱分析发现,中医药治疗冠心病随机对照试验的作者分散作者较多,暂未出现有影响力的作者;研究机构主要是辽宁中医药大学附属医院、辽宁中医药大学附属第二医院、辽宁中医药大学;热点关键词:冠心病、心绞痛、中西医结合治疗、临床效果、临床研究、中药治疗、中医药治疗、不稳定型心绞痛、心律失常、稳定型心绞痛、抑郁症、心力衰竭、心电图、气虚血瘀、益气活血、中医、高血压、心肌缺血、糖尿病、血府逐瘀汤等,并形成10个聚类群。结论中医药治疗冠心病随机对照试验相关文献的发文量逐年增多,中西医结合治疗冠心病是研究热点,通过关键词聚类标签发现,冠心病合并抑郁症、经皮冠状动脉介入治疗术后、室性期前收缩、再狭窄研究及炎症因子评价冠心病受到更多的关注。
文摘Let B be a Banach space in UMD with an unconditional basis. The boundedness of the θ (t)_type singular integral operators in L p B(R n),(1≤p<+∞) and H 1 B(R n) spaces are discussed.
基金This work was supported by the National Natural Science Foundation of China (Grant No.10071071).
文摘The purpose of this paper is to investigate the refinement equations of the formwhere the vector of functions = (1, … ,r)T is in (LP(R8))T,1 ≤ p ≤∞, α(α),α ∈ Z5, is a finitely supported sequence of r × r matrices called the refinement mask, and M is an s x a integer matrix such that limn→ ∞ M-n = 0. In order to solve the refinement equation mentioned above, we start with a vector of compactly supported functions (0 ∈ (LP(R8))r and use the iteration schemes fn := Qan0,n = 1,2,…, where Qa is the linear operator defined on (Lp(R8))r given byThis iteration scheme is called a subdivision scheme or cascade algorithm. In this paper, we characterize the Lp-convergence of subdivision schemes in terms of the p-norm joint spectral radius of a finite collection of some linear operators determined by the sequence a and the set B restricted to a certain invariant subspace, where the set B is a complete set of representatives of the distinct cosets of the quotient group Z8/MZ8 containing 0.
基金Project aupported by the National Natural Science Foundation of China.
文摘By using the weighted versions of Journe's covering lemma and its extension to highetdimensions, this paper contributes an atomic decomposition theorem for the weighted H^p(0<p≤1)spaces on product domains, gets a vector value for the index of the moment conditions whichextends the corresponding result in the case with one--parameter to the case with arbitrarynumber of parameters and solves the problem proposed by S. Y. A. Chang &R. Fefferman.
