Results 11 to 20 of about 22,800 (172)
Gaoya dianqi, 2021 在GIS气体绝缘状态评估过程中,不同的权重确定和隶属度函数选择方法会导致评价结果的不同,进而影响评价结果的准确性。为了避免主观因素的影响,文中在利用熵权法确定权重的基础上,根据变权综合理论引入均衡函数来调整各评价指标的权重。此外,采用梯形、Γ形以及k次抛物线型相结合来确定各指标的隶属度函数,以避免单一隶属度函数所造成的评价误差。最后,利用综合诊断模型来确定GIS气体的绝缘状态,并对比常权重和单一隶属度评价结果。实例分析表明,该方法可以准确有效的评估GIS设备气体的绝缘状态。
刘长银 +6 more
doaj
Meta-analysis of effects of long-term exposure to PM2.5 on C-reactive protein levels [PDF]
, 2022 BackgroundFine particulate matter (PM2.5) is a serious air pollutant associated with elevated levels of C-reactive protein (CRP), an inflammatory indicator.ObjectiveTo assess the potential impacts of long-term exposure to PM2.5 on CRP levels based on ...
Haiming XU +5 more
core +2 more sources
Associations of sugar-sweetened beverages intake frequency with physical growth and glucolipid metabolism among children and adolescents [PDF]
, 2023 BackgroundChildren and adolescents drink sugar-sweetened beverages (SSBs) frequently. Research has confirmed that SSBs associate with weight gain and overweight or obesity.
Jiajie ZANG +9 more
core +1 more source
Integrative Conservation, EarlyView.This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara +3 more
wiley +1 more source
Implementing Omaha System evaluation on stroke clients’ community rehabilitation [PDF]
, 2017 2011-2012 > Academic research: refereed > Publication in refereed journalVersion of ...
万巧琴 +4 more
core
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
Study on the Changes of Physical Health Status of Students from P.E.Teaching Reform [PDF]
, 2014 运用文献资料法、测试法、比较分析法、数理统计法等研究方法,以厦门大学三学期制为背景,以概括总结近8年来我校体育教学深化改革为出发点,对我校2005、2007、2009、2012年学生体质健康监测结果进行比较分析,以期了解我校学生体质健康水平的变化情况,为大学体育教学改革指明方向。结果表明:我校实行三学期制以来,体育教学改革不断深化,学生体质健康状况整体良好,不仅总体水平逐年提高,而且学生的身体形态、机能、素质均得到不同程度的改善;身体形态方面,我校学生肥胖率有所下降,但超重和营养不良的比例有所提高 ...
林顺英, 陈志伟
core +3 more sources
政府旅游数据开放的评价指标体系构建与组态分析：基于21个省级行政区的数据
大数据在信息时代和智慧旅游背景下，政府主动对外开放内部的旅游数据，有利于充分释放旅游数据资源的商业价值与社会价值。使用变异系数法与熵权法进行组合赋权，构建了政府旅游数据开放评价指标体系，计算21个省级行政区的具体得分，并采用模糊集定性比较方法进行高评价值与低评价值条件组态分析。结果表明：指标体系包含4项一级指标、17项二级指标与51项三级指标，可以对当前省级行政区的旅游数据开放绩效进行有效评价；利用层、数据层是权重较高的一级指标，法律政策效率与内容、平台关系等是权重较高的二级指标；高评价值组态为综合发展型 ...
胡安安, 郭梦珂, 黄丽华, 黄荔桐
doaj +1 more source
The AMP-mimetic AICAR prevents HFD-promoted hepatosteatosis and inhibits liver tumorigenesis [PDF]
, 2015 肝细胞癌（Hepatocellularcarcinoma）是最常见的肝脏原位肿瘤。肝癌的 危险因素包括酒精性肝疾病、非酒精性肝炎、肝炎病毒感染等。这些因素都和肝 癌形成中炎症有重要关系。肥胖人群中，肝脏脂质积累造成的非酒精性脂肪肝炎， 肥胖已成为肝癌形成的潜在危险因素。流行病学研究表明，超重和肥胖增加了癌 症发生的风险。在升高体重指数超标的肝癌患者中，由于肝癌死亡的风险是正常 人的4.5倍。文献报道，肥胖通过增加白介素6和肿瘤坏死因子的表达促进肝脏 炎性过程 ...
高建龙
core
Conservation Biology, EarlyView.Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch +6 more
wiley +1 more source