Results 141 to 150 of about 70,150 (293)
Zhongguo shiyan zhenduanxue, 2012 血管并发症是2型糖尿病致死、致残的主要原因,它的发生受到许多因素的影响,其中血管内皮损伤被认为是影响2型糖尿病血管病变发生的重要因素之一,而血管性血友病因子（von Willebrand factor,vWF ...
崔亚斌, 林发全, 刘倩
doaj
Research on the Efficiency and the Influence Factors of Public Services of Local Governments in China [PDF]
, 2016 本文侧重于对我国各地级市政府与民生领域相关的公共服务效率进行测算和评价，并在此基础上分析其主要影响因素。在具体实证研究中，本文以我国281个地级市地方政府2007-2013年的数据作为样本，采用DEA-Malmquist指数模型先对我国地方政府教育、医疗卫生、社会保障三项民生公共服务效率情况进行测算和评价，接着再对我国地方政府的民生公共服务效率进行测算和评价。在我国地方政府民生公共服务效率值的基础上，本文进一步采用Tobit受限回归模型来分析影响我国地方政府民生公共服务效率的主要因素 ...
刘学纯
core
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
Study on the Total Factor Productivity of China’s Provincial Industries [PDF]
, 2016 多年来我国一直保持着高速的经济增长速度，但是高速经济增长的背后是巨大的能源消耗与严重的环境污染。虽然近年来我国经济增长速度有所下滑但相对世界其他经济体而言还是比较快的，这就要求我们关注我国经济增长质量，考察全要素生产率。本文就是在此背景下，将能源消耗纳入投入要素范畴，对中国省际三大产业全要素生产率增长进行测算、分解和对比，同时也对全要素生产率增长的相关影响因素进行了分析。 本文利用1997—2013年我国省际三大产业的面板数据 ...
王玉
core
Evolution of research on global amphibian declines
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash +6 more
wiley +1 more source
CEO Succession, Strategic Change and Motivation [PDF]
, 2016 CEO是负责日常经营的高级管理人员。随着欧美国家企业治理制度不断完善，为应对复杂多变的企业环境和全球化趋势，CEO应运而生。 本文运用实证研究方法分析了CEO继任对战略变革的影响、CEO实施战略变革的动机，同时进一步研究了CEO继任和战略差异度对企业绩效的影响。 本文选取沪深两市2007-2013年上市公司的数据作为样本。通过回归分析探究，本文得到了以下几个结论：（1）发生CEO继任的公司的战略变革幅度有明显增加，企业绩效在CEO继任对战略差异度影响的过程中起到调节作用；（2 ...
李文涛
core
Politics &Policy, Volume 54, Issue 1, February 2026.ABSTRACT Psychedelic interventions are not publicly available through Canada's healthcare system. Despite growing scientific evidence, public interest, and efforts to expand access to psychedelic therapies for end‐of‐life psychological suffering, Canadian policies remain restrictive.
Sarah Kratina +4 more
wiley +1 more source