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ETC Proportional Adjustment Model Based on Queuing Theory in the Case of Unmanned Vehicles 36

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ETC Proportional Adjustment Model Based on Queuing Theory in...

Pre‑rainy Season Rainstorms in South China—Risk Perception of the 11 April 2019 Rainstorm in Shenzhen City

第36届中国控制会议

作者： Junjie Zhu Haoyu Lin yuting xiao Han Luo Dongdong Liu Pengfei Li College of Electrical and Information Engineering Hunan University College of Mathematics and Econometrics Hunan University School of computer and information Fuyang Normal University College of Computer Science and Electronic Engineering Hunan University

ISBN: (纸本)9781538629185

With the continuous breakthroughs of unmanned vehicle technology,a increasing number of unmanned vehicles will be added to the current traffic *** will the above situation influence the traffic,and how will we change the existing traffic system design program to help unmanned technology to improve people’s travel efficiency in a better way,have become urgent problems to be *** this paper,the model of Queuing Theory is applied to simulate and calculate the number of lanes of different toll stations,on which basis,the optimal proportional adjustment model of ETC（Electronic Toll Collection） is ***,the results of sensitivity analysis of the model show that it has an excellent robustness and reliability.

关键词： queuing theory unmanned vehicle ETC

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International Journal of Disaster Risk Science 2022年第6期13卷 925-935页

作者： Xuran Sun Wei Zhou Guoming Zhang Lianyou Liu Guangpeng Wang Mingzhu Xiang yuting xiao Shufeng Qu Shouwei Li Jiaxue Li Key Laboratory of Environmental Change and Natural Disasters Ministry of EducationBeijing Normal UniversityBeijing 100875China School of National Safety and Emergency Management Beijing Normal UniversityBeijing 100875China Academy of Disaster Reduction and Emergency Management Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China School of Systems Science Beijing Normal UniversityBeijing 100875China

With the acceleration of urbanization in South China, rainstorms and floods are threatening the safety of people in urban areas. The 11 April 2019(4·11 hereafter)rainstorm in Shenzhen City was a typical pre-rainy season rainstorm that caused great damage, yet such pre-rainy season events have not attracted sufficient attention in *** perception of the public may indirectly affect their disaster preparedness, which is important for disaster management. In this study, we conducted a questionnaire survey that considered demographic factors and the level of risk perception, knowledge of risk, impact of the 4·11 rainstorm event on public risk perception, and degree of trust in the government. We used a two-factor model of risk perception to evaluate the factors that influenced public risk perception of the 4·11 rainstorm in Shenzhen. The main conclusions are: The 4·11 rainstorm improved public awareness of both risk and impact through the medium term, but the public’s perceived low probability of disaster occurrence and lack of knowledge of the pre-rainy season rainstorm phenomenon led to serious losses during this event. Although the public has high trust in the Shenzhen government, the management of rainstorm disasters in the pre-rainy season needs to be further improved.

关键词： Knowledge of risk Pre-rainy season rainstorm Risk perception Shenzhen city South China

Decorative Art of Doors and Windows in Southern Jiangxi:Taking Bailu Ancient Village as an Example

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Asian Agricultural Research 2020年第12期12卷 51-53,57页

作者： yuting xiao xiaoyun LI Yishun ZHOU College of City Construction Jiangxi Normal University Nanchang 330022 China

China,as a country with 56 ethnic groups,has different geographical location,historical development and national *** in different places have incorporated different cultural characteristics when building local *** differentiated cultural and artistic feature is a reflection of the cultural connotation in a specific age and ***,cultural protection is not always *** details are missed in this torrent of conservation culture,and door and window decorations are in this *** collecting data,it is found that there is very little research on door and window decoration in *** this study,taking the doors and windows of Bailu Ancient Village as an example,combined with the cultural history of door and window decoration in southern Jiangxi,the artistic essence and historical value of the decorative patterns of houses were *** searching a large number of documents,a field investigation was conducted in Bailu Ancient *** direct observation of doors and windows and asking local residents about their understanding of door and window decoration,the history,current situation and future of door and window decoration in Bailu Ancient Village were described in detailed and predicted roughly.

关键词： Bailu Ancient Village Decorative art Cultural significance Realistic value

Measurement System of Landscape Fragmentation in National Nature Reserves:A Case Study of Dinghu Mountain National Nature Reserve,Guangdong Province

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Journal of Landscape Research 2021年第3期13卷 90-94页

作者： CHEN Haiming CHEN Fang xiao yuting Zhaoqing University ZhaoqingGuangdong 526000China Jose Rizal University Manila 999005Philippines

With the advancement of industrialization and urbanization,the natural landscape has been destroyed to varying degrees,presenting the trend of landscape fragmentation and ecosystem *** Dinghu Mountain National Nature Reserve as an example,a three-dimension measurement system of separation degree,fractal dimension and interference intensity for landscape fragmentation is established and verified by collecting survey data through *** research results will provide a theoretical reference for landscape conservation and sustainable development of national nature reserves.

关键词： Landscape fragmentation National nature reserve Dinghu Mountain

The Strategy of Outdoor Space Micro-Renewal under the Goal of Communities for All Ages: A Case Study of Xingchaibeiyuan Community in Nanchang City

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Asian Agricultural Research 2019年第5期11卷 46-49页

作者： Meipeng LE Yulian WU yuting xiao Taojian HE College of Urban Construction Jiangxi Normal University

With the rapid development of the city,the old city has gradually lost its former glory,and the old community accounts for a large proportion in the city,and is located in the core area of the city. At present,there are some problems in the old community,such as high degree of aging,poor quality of living space,and lack of outdoor space. The old community transformation is mainly in the way of ' guided reconstruction',it has completely destroyed the original historical environment and the spirit of the place. Therefore,taking Xingchaibeiyuan Community in Nanchang City as an example,we deeply explore the strategy of micro-renewal of community outdoor space,so as to provide a reference for the renewal of outdoor space in this kind of old residential area.

关键词： Communities for all ages Outdoor space Micro-renewal The elderly Old urban areas

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硫酸铝对钒钛系脱硝催化剂磨损率的影响

钢铁钒钛 2018年第5期39卷 37-42页

作者：肖雨亭江苏龙源催化剂有限公司

以硫酸铝为添加剂,通过脱硝催化剂制备工艺,制备出了高耐磨钒钛系脱硝催化剂。通过检测分析催化剂的磨损率、脱硝活性、孔结构分布及比表面积,研究了硫酸铝添加量对催化剂耐磨损性能、脱硝效率和微孔比表面积的影响,并探讨了硫酸铝提升... 详细信息

以硫酸铝为添加剂,通过脱硝催化剂制备工艺,制备出了高耐磨钒钛系脱硝催化剂。通过检测分析催化剂的磨损率、脱硝活性、孔结构分布及比表面积,研究了硫酸铝添加量对催化剂耐磨损性能、脱硝效率和微孔比表面积的影响,并探讨了硫酸铝提升脱硝催化剂耐磨性能的机理。研究结果表明,在650℃焙烧条件下,催化剂载体中的硫酸铝形成三维网络结构从而提升了催化剂的耐磨损性能。当硫酸铝添加量为10%时,催化剂磨损率0.079%/kg,比常规催化剂降低了28%左右。硫酸根的引入提高了催化剂的脱硝效率,当硫酸铝添加量为15%时,催化剂脱硝效率比常规催化剂提高了3.15%。

关键词：钒钛系脱硝催化剂燃煤电厂烟气脱硝耐磨损硫酸铝

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基于分块优化思想的多无人机覆盖路径规划

中国科学：技术科学 2020年第4期50卷 439-452页

作者：肖玉婷方勇纯梁潇林河何桢南开大学机器人与信息自动化研究所天津市智能机器人技术重点实验室天津300350

覆盖路径规划广泛应用于环境清洁、建图、监控等场景,为了提高覆盖效率,经验证,一组有自主运动能力的无人飞行器配合机载传感器可以提供有效帮助.本文提出一种可以应用于大规模复杂环境的多无人飞行器覆盖路径规划方法.在面积规模大、... 详细信息

覆盖路径规划广泛应用于环境清洁、建图、监控等场景,为了提高覆盖效率,经验证,一组有自主运动能力的无人飞行器配合机载传感器可以提供有效帮助.本文提出一种可以应用于大规模复杂环境的多无人飞行器覆盖路径规划方法.在面积规模大、环境情况复杂的区域内,计算出可以采集到精确可靠环境信息的最优覆盖路径是比较困难的,本文提出的覆盖路径规划方法基于分块优化的思想,将大规模的环境分成若干面积较小的子区域,分别计算子区域内的局部最优覆盖路径,在一些特定的约束条件下,所有子区域内的局部覆盖路径可以连接成一条遍历环境中每个子区域的整体覆盖路径,兼顾了环境的差异性和覆盖的完整性.同时,为了保证整体路径的平滑,适合飞行器跟踪,在规划路径时还考虑到减小相邻两段局部路径之间的过度转角和飞行器完成一次环境覆盖的调头转向次数,通过设计不同的覆盖模式以及在计算局部路径的评价函数中加入转角相关项来实现路径的平滑.最后,通过仿真和实验验证了所提算法的有效性和可行性.

关键词：分块优化多无人机环境覆盖路径规划

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数字经济发展与劳动力空间错配

财经研究 2024年第6期50卷 138-152页

作者：李言肖雨婷浙江工商大学经济学院浙江杭州310018

数字经济的快速发展对劳动力市场格局有深远影响,而劳动力在城市间的流动将会影响劳动力空间配置情况。文章基于Rosen-Roback模型,从城市层面提出劳动力空间错配水平的测度方法,对中国城市间劳动力空间错配情况展开分析。研究发现,中国... 详细信息

数字经济的快速发展对劳动力市场格局有深远影响,而劳动力在城市间的流动将会影响劳动力空间配置情况。文章基于Rosen-Roback模型,从城市层面提出劳动力空间错配水平的测度方法,对中国城市间劳动力空间错配情况展开分析。研究发现,中国劳动力空间错配水平呈下降趋势。文章结合数字化背景,从理论和实证两方面考察数字经济发展对劳动力空间错配水平的影响。基准回归结果表明,数字经济发展将会改善劳动力空间错配水平。在人口规模较大、经济发展水平较高、劳动力配置过度、位于北方和内陆地区的城市,数字经济发展对劳动力空间错配水平的改善效果更好。进一步分析发现,在2015年之后,数字经济发展对劳动力空间错配水平的改善效果也较好。数字经济发展会通过城市居住价格渠道影响劳动力空间错配水平,具体表现为:在劳动力配置不足的城市,数字经济发展通过降低城市居住价格渠道改善劳动力空间错配水平;在劳动力配置过度的城市,数字经济发展通过提高城市居住价格渠道改善劳动力空间错配水平。文章的研究对于数字经济发展、劳动力结构的改善具有一定的参考价值。

关键词：数字经济劳动力空间错配城市居住价格 Rosen-Roback模型

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数字经济发展对劳动力价格扭曲的影响

人口与经济 2023年第1期 44-56页

作者：李言肖雨婷浙江工商大学经济学院浙江杭州310018

数字经济的快速发展成为推动要素市场化配置改革的新路径,通过降低劳动力价格扭曲和提高劳动力配置效率的途径实现质量型“人口红利”对中国经济高质量发展至关重要。从市场分割和劳方谈判力量视角构建数字经济发展影响劳动力价格扭曲... 详细信息

数字经济的快速发展成为推动要素市场化配置改革的新路径,通过降低劳动力价格扭曲和提高劳动力配置效率的途径实现质量型“人口红利”对中国经济高质量发展至关重要。从市场分割和劳方谈判力量视角构建数字经济发展影响劳动力价格扭曲的作用机制,并基于中国城市层面数据,利用主成分分析法构建了数字经济发展指标,利用生产函数法测算了劳动力价格扭曲,探讨了数字经济发展对劳动力价格扭曲的影响。实证分析发现,推动数字经济发展有助于降低劳动力价格扭曲。从分地区层面来看,内陆地区的影响幅度较大;从城市规模层面来看,人口规模小于或等于500万的城市,数字经济发展对劳动力价格扭曲具有显著的降低作用;从时间层面来看,2012年之后的降低作用持续显著。机制分析发现,数字经济发展将会通过降低市场分割和增强劳方谈判力量的渠道降低劳动力价格扭曲。面板分位数模型分析发现,在劳动力价格扭曲程度越大的城市,数字经济发展对劳动力价格扭曲的降低效果越好。

关键词：数字经济劳动力价格扭曲市场分割劳方谈判力量生产函数法