Showing 141 - 160 results of 220 for search '"Hunan province"', query time: 0.06s Refine Results
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    Spatiotemporally Combined Dimensionality Reduction Algorithm for Optimizing Long-term Operation of Multi-reservoir Systems by CHEN Jia, ZHANG Hanjun, XU Nan

    Published 2023-01-01
    “…To alleviate the “curse of dimensionality” and improve the solution efficiency while ensuring the quality of solutions in optimizing the operation of multi-reservoir systems,this paper proposes a spatiotemporally combined dimensionality reduction algorithm which integrates and improves the dynamic programming with successive approximation (DPSA) and the progressive optimality algorithm (POA).First,a chain-based successive approximation strategy is proposed to expand the DPSA's optimization mode from “single reservoir alternation” to “cascade reservoir chain alternation”,which makes up for the DPSA's shortcomings in dealing with the hydraulic coupling relationships among cascade reservoirs.Then,a dynamic variable decoupling strategy and perturbation mechanism are proposed to deal with the POA's blind search problem and dimensionality problem.Finally,the two improved algorithms are combined,in which the improved POA is applied to solving the optimization problems of cascade reservoir chains under the framework of the improved DPSA.The power generation operation problem of the cascade reservoirs in the Yuan River Basin of Hunan Province and the classical ten-reservoir problem are utilized to test the performance of the proposed algorithm.The proposed algorithm outperforms seven existing alternatives in terms of solution quality and efficiency.The results indicate that the proposed algorithm can effectively alleviate the “curse of dimensionality” in optimizing the operation of multi-reservoir systems,improve the efficiency while ensuring the quality of solutions and has potential to be applied to optimizing the operation of complex large-scale multi-reservoir systems.…”
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    Effects of organic farming adoption on farmer’s subjective well-being: evidence from Xiangxi Prefecture, China by Pingan Xiang, Chi Wen, Zhifen Lin, Maosen Xia

    Published 2025-12-01
    “…This paper utilizes a sample of 450 farmers from four counties in the Xiangxi Tujia and Miao Autonomous Prefecture of Hunan Province, China, to compare the SW of conventional and organic farmers. …”
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  8. 148

    Research on Solving Path of Negative Effect of “Information Cocoon Room” in Emergency by Wei Liu, Wei Zhou

    Published 2022-01-01
    “…Based on information ecology theory and the S-O-R model, this study designed questionnaires using a Likert five-level scale and selected 388 publics from several smart city pilot areas in Changsha, Zhuzhou, Shaoshan, and Yueyang cities in Hunan Province. Field research was conducted based on four factors, information ontology, information technology, government regulation, and social network, and empirical analysis was conducted through structural equations. …”
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    Experimental and Theoretical Investigation of Overburden Failure Law of Fully Mechanized Work Face in Steep Coal Seam by Ze Liao, Tao Feng, Weijian Yu, Genshui Wu, Ke Li

    Published 2020-01-01
    “…Based on the geological conditions of Xiangyong coal mine in Hunan Province of China, the laws of roof deformation and failure in steep coal seam are obtained by similar simulation experiments. …”
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  12. 152

    Prediction model for economy-driven provincial natural gas load in China by Xueping DU, Zhikai LANG, Menglin LIU, Jiangtao WU

    Published 2023-10-01
    “…Among them, Guangdong Province and Hunan Province have the largest absolute increase and the highest growth rate of consumption, respectively. …”
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    Status and associations of transition shock among nursing students during clinical practice: A cross-sectional study. by Yinying Tang, Xiuwen Chen, Yuying Liao, Tingyu Zheng, Yao Xiao, Yunhui You

    Published 2025-01-01
    “…<h4>Methods</h4>This cross-sectional study was conducted on October 8-28, 2022 at four tertiary Class A hospitals in Changsha, Hunan Province, located in south-central China. A convenience sample of 620 full-time nursing students was surveyed to collect demographic information and assess their transition shock levels using the transition shock scale. …”
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  18. 158

    Effect of Tronclass combined with team-based learning on nursing students’ self-directed learning and academic performance: a pretest-posttest study by Longyi Hu, Siqi Li, Leshan Zhou

    Published 2024-07-01
    “…Participants From March to July 2023, 69 undergraduate third-year nursing students from a university in Hunan Province were selected through a whole-group sampling method. …”
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  19. 159

    Description of a new leaf litter toad of Leptobrachella (Anura, Megophryidae) from Hunan, China by Jie Huang, Fang-Peng Zhang, Wan-Sheng Jiang, Yong-Xiang Tian, Xing-Long Huang, Ya-Lan Xu, Jing Liu, Xin-Yu Li, You-Xiang Zhang, Tao Wu

    Published 2025-01-01
    “…The new species was distributed in Xiaoxi National Nature Reserve, Yongshun County, Xiangxi Tujia and Miao Autonomous Prefecture, Hunan Province, China. Phylogenetical analysis revealed that the new species is sister species of L. wulingensis (p-distance 0.019 in 16s rRNA gene, p-distance 0.073 in COI gene). …”
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  20. 160

    Constructing Attention-LSTM-VAE Power Load Model Based on Multiple Features by Chaoyue Ma, Ying Wang, Feng Li, Huiyan Zhang, Yong Zhang, Haiyan Zhang

    Published 2024-01-01
    “…The dataset includes 2 years of load values and weather data collected in Caojiaping, Hunan Province, China. The experimental results show that the Attention-LSTM-VAE model has the lowest mean absolute error of 0.0374 and the highest R-squared value of 0.9714, verifying the accuracy of the model. …”
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