Optimization of the Best Polar Site for Antioxidant Activity of Panax ginseng Extract Based on Entropy Weight Method and Grey Relational Analysis Combined with Component Analysis [PDF]
Objective: The differences in antioxidant activity of different polar parts of panax ginseng were investigated to screen the best active parts. Method: In this study, the water extract of Panax ginseng was extracted by petroleum ether, chloroform, ethyl ...
Fengqin XIAO +7 more
core +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
core
Apple Quality Evaluation Based on Entropy Weight Method, Grey Relational Degree Method and Low-field Nuclear Magnetic Resonance Detection [PDF]
To study the quality characteristics of different apple varieties and establish a comprehensive evaluation model of apple quality, taking five varieties of apples (Tianshui Huaniu, Aksu Tangxin, Marshal Huang, Cream Fuji, and Luochuan Red Fuji) as the ...
Haijun SHEN +4 more
core +1 more source
Study on site selection and economic evaluation of mine YJL [PDF]
, 2017 目前，全球矿产品价格低靡，矿山企业生存难度急剧增加，要想在市场得以生存，矿山企业必须提升自身市场竞争力。矿山采选厂址的地理位置，是矿山总图合理及规范化布局及各技术方案的基础。选址的技术性及经济性，直接影响矿山企业的生产能力、运营成本、管理难度及经济效益。因此采用科学先进的设计方案、制定清晰的环保措施、以及较为准确的评估项目的经济性，是使矿山企业提高竞争力的重要手段。 本文首先根据矿区水文地质条件及地形地貌、矿体上下盘位置、地表监测带和尾矿库位置等影响因素，圈定并粗选出三个备选采选厂址 ...
张振中
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Review of Evaluation Indicators and Technologies for Low-Carbon Energy Utilization [PDF]
[Introduction] Facing the advancement of the national "carbon peaking and carbon neutrality" strategy, energy in various regions of China will develop towards low-carbon utilization based on its unique resource endowment.
Bin WEI +7 more
core +1 more source
Quantitative identification of complexity of microscopic fracture structure of coal seam floor composite rock layer [PDF]
, 2023 Under mining conditions, the micro crack structure of the composite strata of the coal seam floor affects the uplift and seepage of the groundwater in the underlying high water pressure aquifer, and its complexity is of great significance for the ...
Bo CHEN +4 more
core +1 more source
耦合生态系统服务供求关系的生态安全格局动态分析——以闽三角城市群为例 [PDF]
, 2018 实现分区管理是缓解城市群生态安全空间差异的有利途径。基于供求理论构建了生态系统服务供求关系动态模型框架,并利用供给与需求的象限区划表征闽三角城市群生态安全格局;在不同的尺度变换上,运用价值单量修正模型、INVEST生境质量模型、景观指数模型、生态韧性模型、熵权法等方法综合测度城市群生态系统服务供求水平,实现生态安全格局的分区化;引入环境库兹涅茨曲线理论解析区域生态安全格局现状和成因;数据分析借助Arc GIS可视化表示。研究发现:(1)闽三角城市群存在50%区域属于生态安全高供给失衡区,其中70 ...
曹文志, 王飞飞, 黄智洵
core
Hazard assessment of landslides in Lancang County, Yunnan Province based on weighted information value model [PDF]
Lancang County is located in the longitudinal tectonic zone of western Yunnan, where landslides are frequently developed by strong tectonic movement and increasing human activities, thus posing a significant threat to the safety and security of the local
Lanting WANG +3 more
core +1 more source
Evaluation of Water Resource Vulnerability in Changsha City Based on VSD and Cloud Matter-element Model, and Diagnosis of Obstacle Factors [PDF]
, 2023 [Objective] The vulnerability of water resources in Changsha City was evaluated based on the connotation of vulnerability and its obstacles factors were identified, in order to provide a theoretical basis for the formulation of water resources management
Deng Hongwei, Li Yi
core +1 more source
Optimization of support parameters of development roadway passing through collapse column based on AHP−entropy weight combination [PDF]
Collapse column crushing area is easy to induce safety accidents, reasonable design of roadway support parameters in the collapse column area is especially important for safe and efficient tunneling.
Ce JIA +6 more
core +1 more source