Results 21 to 30 of about 21,897 (163)
Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Study on the Competitiveness of City Commercial Banks in China Based on the Objective Weighting Method [PDF]
, 2015 城市商业银行是中国银行业的重要组成部分,十几年以来,在促进地方经济发展,解决中小企业融资难上发挥了不可忽视的作用.如今,国内外经济金融形势瞬息万变,监管环境也随着调整,新兴事物不断挑战传统银行经营业务和模式,在如此严峻的环境里,如何保持可持续发展、提升竞争力成为困扰城市商业银行的大问题.而客观分析和评价城市商业银行竞争力对城商行正确认识自身从而作出经营决策有重要的指导意义.截至2013年末,我国有145家城市商业银行,本文 选择数据完整的86家城商行作为数据样本,对我国城市商业银行竞争力状况进行了研究.
万琴
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Classification of coal gangue pile vegetation based on UAV remote sensing [PDF]
, 2023 The accurate classification of vegetation species is the basis for the evaluation of vegetation restoration effect of coal gangue pile. In this paper, the visible image of coal gangue pile in different seasons was obtained by UAV remote sensing ...
Mengying RUAN +4 more
core +1 more source
Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Procedural, distributional, recognitional, and epistemic justice aspects of conservation interventions are well documented in contexts where pastoralism is a key livelihood and way of life. Geospatial analyses and representations of wildlife conservation and restoration that are increasingly applied in pastoralist rangeland socioecological ...
Ryan R. Unks
wiley +1 more source
Gaoya dianqi, 2020 配网变压器对电力系统的可靠、经济运行发挥着重要作用。过去,维护人员需要花费大量时间逐一检查配网变压器。而如今,随着电力用户电能数据采集系统的广泛部署,可提供有用的量测数据,并将其用于进一步的状态监视。因此,文中提出了一种用于配网变压器的基于数据驱动的异常状态监测数据采集算法,该算法可以及时向操作人员和维护人员发送异常状态警报。在所提的算法中,利用Spearman秩相关系数显示相电流间的相关度,其t统计量用于决定基于假设检验的确定数据采集是否存在异常情况。最后 ...
刘林青 +4 more
doaj
Preparation and Characterization of Semaphorin3Fc Monoclonal Antibody and the Preliminary Application [PDF]
, 2015 研究背景和目的 抑癌基因发生异常是癌症发生的机制之一。人类基因的很多区域发生改变时可导致细胞失控性生长。Sema3F作为肺癌19个候选抑癌基因之一，是Ⅲ型Semaphorin（即神经导向因子，最初作为Neuropilins的配体在神经系统中发挥排斥神经节轴突和调节神经系统发育的作用）家族的一个成员。目前有研究发现，与正常组织相比Sema3F蛋白在肿瘤细胞中的表达普遍存在下调的趋势，并在血管形成以及肿瘤增殖、凋亡、粘附和转移等中起着负向调节作用。此外，诸多体内或者体外实验已经证明 ...
李哲
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Distribution, occurrence characteristics and geological origin of typical hazardous elements in low-medium ash coal of Huainan coalfield [PDF]
, 2023 With the continuous development, processing and utilization of coal resources in our province, the existence of typical harmful elements in coal is bound to have a negative impact on the efficient and clean utilization of coal resources.
Chao WEI +6 more
core +1 more source
Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
基于CHAID算法的病毒性肝炎患者DRGs分组研究 [PDF]
, 2015 目的了解影响患者住院医疗费用的因素,建立drgS病例分组并对各组医疗费用进行分析评价。方法以厦门地区病毒性肝炎患者为研究对象,首先利用单因素和多因素方法分析患者住院医疗费用的影响因素,然后以患者住院医疗费用作为目标变量,通过CHAId模型进行drgS病例分组,最后采用rIV、CV等评价指标分析和评价分组结果。结果对可能影响住院医疗费用的变量进行单因素分析显示,年龄、付费方式、入院情况和是否手术4个因素具有统计学意义,通过多因素分析显示年龄、费用支付方式、入院情况是厦门地区肝炎患者住院费用的主要影响因素 ...
方亚, 曾雁冰, 林鹏
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