Miwa问题的注记

本文给一反例说明Ｍｉｗａ问题的解答中的两个条件是相互独立的．     

半序度量空间中一类减算子方程组的可解性

该文在半序度量空间中讨论了一类减算子方程组,在不要求算子连续的情形下,证明了方程组的解的存在性,并在适当的条件下得到了解的叠代收敛性．     

无正规条件的半序锥度量空间中压缩映象的不动点定理

研究半序锥度量空间中的压缩映象不动点问题,删去了正规锥的条件,同样得到了半序锥度量空间中压缩映象的不动点的存在性,这些结果改进了近期文献的相关结论.     

复超球上Schwarz引理的推广及应用

本文研究了经典的Schwarz引理在复超球上的推广并由此建立了复单位球的Poincar(?)度量。此外还给出了它们在多元复分析中的若干应用。     

后牛顿力学及其应用

本文综述了牛顿重力理论的近代发展,即后牛顿力学或度规理论,並简述了它的现代应用成果。     

双曲度量下导数的Schwarz-Pick不等式

利用双曲度量下的Schwarz-Pick不等式,得到了关于双曲度量下导数的Schwarz-Pick不等式,并给出了证明.     

集值映象对与单值映象的公共不动点定理

在单值映象与集值映象相容或次相容的条件下,给出了完备凸度量空间中集值映象对于单值映象存在公共不动点的一个充分条件,改进和推广了文[1-4]中的已知结果。     

Evaluation of Sigma-Metric and Application of Quality Tools in Clinical Laboratory of a Tertiary Care Hospital

Variability in analytical performance of some analyte indicated the need of evaluation of quality plan of our laboratory. We tried to put the same degree of effort into our quality metrics as we put into the laboratory processes themselves. Application of six sigma methodologies improve the quality by focusing on the root causes of the problems in performance and analyzing by flowcharts, fishbone diagrams and other quality tools. Sigma metric was calculated for laboratory parameters for a period of 8 months during 2018–19. The analytes with poor sigma metric were free Thyroxine (FT3, FT4), Sodium, Calcium and Magnesium. Sigma metric of free Thyroxine (FT3, FT4), Sodium, Calcium and Magnesium were below 3. A road map for process improvement was designed with DMAIC (Define-Measure-Analyze-Improve-Control) model to solve the issue. Possible causes for low analytical performance of the particular analytes were depicted in Fishbone diagram. The Fishbone analysis identified the water quality issues with electrolyte analysis while high ambient temperature was culprit for poor assay performance of free Thyroxine. Sigma metric of the analytical performance was assessed once again after root cause analysis. Sigmametric showed marked improvement in control phase. Identification of problems led to reduction in non value added work leading to adequate resource utilization by addressing the priority issue. Therefore, DMAIC tool with Fish bone model analysis can be recommended as a well suited method for troubleshooting in poor performance of laboratory parameter.     

位置服务中基于假数据的轨迹隐私度量方法

随着各种各样移动设备的普及,轨迹隐私保护问题变得日益严峻,作为轨迹隐私保护的一个方向,国内外开始慢慢建立起一些较为成熟的度量机制,常见的有基于k-匿名保护机制的隐私度量方法、基于跟踪的度量方法、针对特定匿名系统的轨迹隐私度量方法等。文章在现有研究的基础上构建了了一种基于假数据轨迹隐私保护技术的隐私度量标准,从发布假轨迹上点之间的关联性、发布数据所包含信息的精确度以及攻击者所拥有背景知识多少三个方面进行轨迹隐私保护度的全面度量。     

合作能力指数及其实证研究

合作能力指数是一个测度作者科研合作行为的新指标。以图书情报领域522位作者为研究对象,将合作能力指数与已有科研合作测度指标(合作度、合作率、合作系数)进行比较,并分析合作能力指数与作者科研绩效(发文量、总被引、h指数)之间的关系,从而指出合作能力指数具有独特的理论和实际应用价值。