Results 21 to 30 of about 71,602 (282)

Experimental research progress of public management——based on the literature analysis of 2000-2015 [PDF]

open access: yes, 2016
20世纪80年代后期开始,一场影响巨大的行政改革席卷发达国家和发展中国家。新公共管理运动是关于公共管理范式的一次重大变革,这种变革不仅体现在以公共选择理论、制度经济学理论、交易成本理论等为基础的理论变革,更体现在方法论上的变革。公共管理是一个方法选择多样的学科,然而实验法作为探索问题的传统途径,不管是与其他社会科学的实验方法应用比较,还是与公共管理学科中其他经验研究方法的应用比较,公共管理实验研究少之又少。 得力于一些公共管理学者的不懈努力,近年来,公共管理实验研究已经取得了一些进步。但无论何种学科 ...
吴惠敏
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Trait‐Based Prediction of Extinction Risk and Conservation Strategy for Traditional Chinese Medicinal Plants in China 基于性状的中药植物灭绝风险预测与保护策略研究

open access: yesIntegrative Conservation, EarlyView.
Our research allows us to understand the predictors of extinction risk in traditional Chinese medicinal (TCM) plant species with known threat status, and incorporate this knowledge to predict other TCM plants with unknown conservation status in China so as to improve the overall effectiveness of conservation strategies.
Yuhan Zheng   +4 more
wiley   +1 more source

Research progress of construction and application of nursing studio (护理工作室的应用及研究进展)

open access: yes中西医结合护理, 2021
This paper reviewed studies on construction and application of nursing studio from the perspectives of concept, origins, development, research status, pros and cons, in order to provide reference for the development of nursing studio in China ...
YU Lin (喻琳), LI Guirong (李桂蓉)
doaj   +1 more source

Changes of Potential Suitable Areas for Lynx Under Climate Change in Mohe Area, Daxing'anling Mountains, China

open access: yesWildlife Letters, EarlyView.
Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu   +5 more
wiley   +1 more source

电力产品可靠性研究的本质动因和前景展望

open access: yesGaoya dianqi, 2011
笔者回顾了可靠性研究的发展历程并总结了其研究现状,介绍了产品可靠性研究的基本概念及常用的可靠性指标,系统分析了时代背景和中国社会经济发展对电力产品提出的新要求,结合目前中国电网的发展趋势、智能电网建设的需求及电网电力部门的管理模式变化等时代信息,阐明了进行电力产品可靠性研究的契机和广阔发展空间。在此基础上结合对电力产品开展全寿命周期管理进行了分析和讨论,阐述了对电力产品进行可靠性研究的重要性、必要性和迫切性。
武星, 殷晓刚, 魏泉, 成勇
doaj  

A Research on Short-term Export Credit Insurance Marketing Strategy of SINOSURE [PDF]

open access: yes, 2016
随着国际经济形势复杂性和不确定性因素不断增加,出口企业在国际贸易中的风险也随之增加。为了降低国际交易中的收汇风险或获得融资,出口企业对出口信保的需求增加。在此背景下,中国信保作为我国唯一政策性信用保险机构的作用变得尤为重要。但是,随着短期出口信用险业务逐步市场化,商业性保险机构可以开展短期出口信用险业务,必然对其短期信用险业务产生影响。基于此,论文围绕中国信保短期出口信用险营销策略进行深入研究,在分析外部环境和自身优势和劣势的基础上,制定可行的营销组合策略,旨在提高中国信保短期出口信用险的竞争力 ...
张安璐
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Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop   +8 more
wiley   +1 more source

Study on the Optimization of the Seawater Environmental Monitoring Network in the Bay Based on Kriging and GIS: A Case Study from Quanzhou Bay, Fujian Province [PDF]

open access: yes, 2015
海湾生态系统是一种重要海洋生态系统类型,通常具有独特的生态环境和高价值的各类资源。同时,其优越的自然条件、区位条件以及多样、丰富的资源,促使海湾周边城市社会经济发展快速,人口密度增大。但是,海湾作为半封闭海域,海水交换能力与自净能力有限,易受径流沉降与陆源污染物输入的影响,其生态环境较为脆弱。因此,亟需基于高效、准确的海洋环境监测评价以实施环境监督管理的措施。目前,我国海洋环境监测工作普遍存在监测目的不明确、环境信息不完整以及监测计划针对性弱等问题,导致现已开展的海洋环境监测与评价无法衔接 ...
倪敏捷
core  

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

Selective Isolation, Identification and Biological Activity Investigation of Rare Actinomycetes from Rhizosphere Soil [PDF]

open access: yes, 2016
天然产物是新药制备的重要原料,绝大多数来源于微生物的天然产物都分离自放线菌,尤其是链霉菌。链霉菌是放线菌的重要组成成员,能合成结构类型丰富、生物活性多样的次级代谢产物,可用于创制抗生素、抗肿瘤药物、免疫抑制药物、抗虫药物等,在医疗、农业、食品等领域具有重要的应用价值。然而,随着对链霉菌持续的开发利用,目前从链霉菌中发现新型、高活性的次级代谢产物的几率在不断下降,来源于链霉菌的新药研发速度明显放缓。为了解决链霉菌活性次级代谢产物资源日趋枯竭的问题 ...
施金迪
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