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
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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
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Gaoya dianqi, 2021 为了及时有效地诊断变压器绕组松动故障,针对变压器空载合闸振动信号,提出了一种基于变分模态分解(VMD)的分析方法。首先运用VMD对绕组松动前后变压器表面合闸振动信号进行最优模态分解,建立信息熵—峭度—相关系数综合评价模型,并运用熵权—TOPSIS法提取特征模态分量;通过计算变压器振动信号能量熵进一步判定绕组状态;最后搭建测试平台进行实验验证。结果表明,绕组松动和正常状态下变压器振动信号在特征频率和能量分布上均存在明显差异,该方法为变压器绕组松动故障诊断提供了新的思路。
张九思 +4 more
doaj
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
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Coupling Coordination Relationship of Land Ecological Security and Prosperity Process at Border Areas in Guangxi Zhuang Autonomous Region from 2000 to 2020 [PDF]
, 2023 [Objective] The effect of land ecological security at border areas in Guangxi Zhuang Autonomous Region, and the process for improving border areas and enriching people were evaluated scientifically, and the coupling coordination mechanism was revealed in
Huang Ronghua +3 more
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Dianxin kexue为了充分挖掘语音信号频谱包含的情感信息以提高语音情感识别的准确性，提出了一种基于小波散射变换和梅尔频率倒谱系数（Mel-frequency cepstral coefficient，MFCC）的排列熵加权和偏差调整规则的语音情感识别融合算法（PEW-BAR）。算法首先获取语音信号的小波散射特征和梅尔频率倒谱系数的相关特征；然后按尺度维度扩展小波散射特征，利用支持向量机得到情感识别的后验概率并获得排列熵，并使用排列熵对后验概率进行加权；最后采用一种偏差调整规则进一步融合MFCC的相关特征的识别结果 ...
应娜, 吴顺朋, 杨萌, 邹雨鉴
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Gaoya dianqi, 2021 电压等级是柔性直流输电系统中的研究基础,为了能够合理地选择电压等级,文中提出改进TOPSIS法进行柔性直流输电系统电压等级优选。文中首先根据输电容量和输电距离数据,根据理论计算和现场调研,计算出电压等级的范围,参考直流输电系统已确定的电压等级,提出候选的柔性直流输电系统电压等级方案;然后分析影响柔性直流输电系统电压等级的主要因素,构建柔性直流输电系统电压等级的评价指标体系;最后运用改进TOPSIS法进行电压等级优选,在权重确定时采用主观权重确定方法——层次分析法和客观权重确定方法 ...
荣飞 +4 more
doaj
Sustainable Utilization and Obstacle Factors of Water Resource in Jiangxi Province [PDF]
, 2023 [Objective] The sustainable water resource utilization in Jiangxi Province were evaluated and its main obstacles were analyzed in order to provide theoretical references for optimizing water resource governance policy.
Deng Qunzhao +3 more
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Effect of Nitric Oxide on Improving Chilled Pork Quality Based on OPLS-DA and Entropy-Weight Topsis Method [PDF]
This study applied short-term nitric oxide (NO) modified atmosphere treatment to improve the color, extend the shelf life, and enhance the overall quality of chilled pork.
YE Yongmao, GE Qingfeng, WU Mangang, YU Hai, LIU Rui
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A Novel Hybrid Evaluation Method for Transfer Efficiency Assessment between Rail Transit and Public Bicycles [PDF]
, 2020 This paper proposes a new hybrid evaluation method including Improved Analytic Hierarchy Process (IAHP), Entropy Method (EM), and Grey Comprehensive Evaluation Method (GCEM) to assess the transfer efficiency between rail transit and public bicycles.
Dongmei Yan +3 more
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