作者： Xiaofu Lin¹;Hui Fu¹ （¹College of Forestry, Hainan University, Haikou 570228, China）

出处： Sustainability 2022

关键词： cultivated land change;spatial-temporal pattern;driving forces;PLUS model;Haikou City

摘要： The security of cultivated land is the foundation for stable social and economic development. In recent years, with rapid economic development, urbani ...

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作者： Rao Kuang¹;Nangui Fan¹;Weifeng Zhang¹;Song Gan¹;Xiaomin Zhou¹;Heyi Huang¹;Yijun Shen¹ （¹State Key Laboratory of Marine Resources Utilization in South China Sea, Hainan University, Haikou 570228, China）

出处： Sustainability 2022

关键词： growing containers;renewable energy;marine;light intensity;uniformity

摘要： Offshore renewable energy is essential to reduce carbon emissions in China. However, due to the lack of application scenarios, it is difficult to use ...

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作者： Jingpeng Chen¹;Desheng Zhang¹;Zhi Chen¹;Zhijian Li²;Zigong Cai¹ （¹Management School, Hainan University, Haikou 570100, China;²The Bartlett Development Planning Unit, University College London, 34 Tavistock Square, London WC1H 9EZ, UK）

出处： Sustainability 2022

关键词： natural rubber;agricultural social services;green production efficiency;SBM-Tobit model

摘要： It is vital to concentrate on conserving the ecological environment and promoting production efficiency in the process of planting natural rubber. Agr ...

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作者： Xiaokang Hou¹;Shah Fahad²;Peipei Zhao¹;Beibei Yan¹;Tianjun Liu¹ （¹Department of Economics and Management, Northwest A&F University, Xianyang 710021, China;²School of Management, Hainan University, Haikou 570228, China）

出处： Sustainability 2022

关键词： apple futures market;price discover;risk-hedging;market integration;China–US trade frictions;climate disaster

摘要： The agricultural futures market plays an extremely important role in price discovery, hedging risks, integrating agricultural markets and promoting ag ...

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作者： Haiyan Li¹;Xingzheng Ai¹;Han Song²;Yi He³;Xue Zeng⁴;Jiafu Su⁵ （¹School of Management and Economics, University of Electronic Science and Technology of China, Chengdu 611731, China;²School of Management, Chongqing University of Technology, Chongqing 400054, China;³School of Management, Hainan University, Haikou 570228, China;⁴Kunming Shipbuilding Equipment Co., Ltd., Kunming 650236, China;⁵International College, Krirk University, Bangkok 10220, Thailand）

出处： Sustainability 2022

关键词： government subsidy;supply chain;poverty alleviation;game model;poverty scale

摘要： Government subsidy is a common practice in poverty alleviation. We used game theory and the mathematical model of operations management to investigate ...

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作者： Erwei Dong¹;Bing Fu²;Yuntan Li³;Jianing Jin⁴;Hengyu Hu²;Yajing Ma⁵;Zecheng Zhang⁶;Qianwen Xu⁷;Zhu Cheng⁸ （¹College of Physical Education, Huanggang Normal University, Huanggang 438000, China;²School of Physical Education, Shanghai University of Sport, Shanghai 200438, China;³Department of Geography and Environment, London School of Economics and Political Science, London WC2A 2AE, UK;⁴School of Communication, Northwestern University, Evanston, IL 60208, USA;⁵School of Oriental and African Studies, University of London, London WC1H 0XG, UK;⁶School of Physical Education, Hainan University, Haikou 570228, China;⁷School of Travel Services and Management, Tourism College of Zhejiang, Hangzhou 311215, China;⁸School of Business and Tourism Management, Yunnan University, Kunming 650106, China）

出处： Sustainability 2022

关键词： Hainan;sport tourism;SWOT

摘要： Hainan, as a popular tourism destination, is well-promoted by the Chinese central government. In particular, both central and local governments encour ...

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作者： Haoxin Liu¹;Yonghui Zhang¹ （¹School of Information and Communication Engineering, Hainan University, Haikou 570228, China）

出处： Applied Sciences 2022

关键词： line extraction;grid map;mobile robot;ray model

摘要： This paper proposes a ray-model-based straight-line extraction method for the grid map of a mobile robot, call RM-Line. First, the edge map is obtaine ...

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作者： Jieren Cheng¹;Yuanshen Li²;Yuming Yuan³;Bo Zhang³;Xinbin Xu² （¹School of Computer Science and Technology, Hainan University, Haikou 570228, China;²Hainan Blockchain Technology Engineering Research Center, Hainan University, Haikou 570228, China;³Hainan Huochain Tech Company Limited, Haikou 570100, China）

出处： Applied Sciences 2022

关键词： blockchain;trust model;smart contract;blockchain security

摘要： Malicious users can upload illegal data to the blockchain to spread it, resulting in serious threats due to the tamper-proof characteristics of the bl ...

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作者： Shuxiao Li¹;Zhanhong Cheng²;Yun Tong¹;Biao He¹ （¹School of Tourism, Hainan University, Haikou 570228, China;²College of Culture Tourism, Shanxi University of Finance and Economics, Taiyuan 030031, China）

出处： Energies 2022

关键词： tourism carbon emission efficiency;tourism economy high-quality development;interactive mechanism;the Yellow River Basin

摘要： Exploring the relationship between the tourism carbon environment and high-quality economic development in the Yellow River Basin is a national strate ...

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作者： Honghua Rao¹;Heming Jia¹;Di Wu²;Changsheng Wen¹;Shanglong Li¹;Qingxin Liu³;Laith Abualigah⁴ （¹School of Information Engineering, Sanming University, Sanming 365004, China;²School of Education and Music, Sanming University, Sanming 365004, China;³School of Computer Science and Technology, Hainan University, Haikou 570228, China;⁴Hourani Center for Applied Scientific Research, Al-Ahliyya Amman University, Amman 19328, Jordan）

出处： Mathematics 2022

关键词： group teaching optimization algorithm;learning motivation strategy;random opposition-based learning;restart strategy;engineering problems

摘要： The group teaching optimization algorithm (GTOA) is a meta heuristic optimization algorithm simulating the group teaching mechanism. The inspiration o ...

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