Recently,e-commerce develops rapidly,advancing express delivery services,but the whole logistics are incomplete,especially for the issue of ＂the last one-kilometer ＂.For example,the research reviewed status quo and ...Recently,e-commerce develops rapidly,advancing express delivery services,but the whole logistics are incomplete,especially for the issue of ＂the last one-kilometer ＂.For example,the research reviewed status quo and problems of Tianjin Agricultural University and made improvements on campus delivery services to explore the status quo and resolving ways,exploit the hint business opportunity in campus express model,improve efficiency and service attitude and get doublewin of both parties involved.展开更多
With the growth of the online market,demand for logistics and courier cargo is increasing rapidly.Accordingly,in the case of urban areas,road congestion and environmental problems due to cargo vehicles are mainly occu...With the growth of the online market,demand for logistics and courier cargo is increasing rapidly.Accordingly,in the case of urban areas,road congestion and environmental problems due to cargo vehicles are mainly occurring.The joint courier logistics system,a plan to solve this problem,aims to establish an efficient logistics transportation system by utilizing one joint logistics delivery terminal by several logistics and delivery companies.However,several courier companies use different types of courier invoices.Such a system has a problem of information data transmission interruption.Therefore,the data processing process was systematically analyzed,a practically feasible methodology was devised,and delivery invoice information processing standards were established for this.In addition,the importance of this paper can be emphasized in terms of data processing in the logistics sector,which is expected to grow rapidly in the future.The results of this study can be used as basic data for the implementation of the logistics joint delivery terminal system in the future.And it can be used as a basis for securing the operational reliability of the joint courier logistics system.展开更多
We propose a new architecture of truck-based mobile energy couriers(MEC)for power distribution networks with high penetration of renewable energy sources(RES).Each MEC is a truck equipped with high-density inverters,c...We propose a new architecture of truck-based mobile energy couriers(MEC)for power distribution networks with high penetration of renewable energy sources(RES).Each MEC is a truck equipped with high-density inverters,converters,capacitor banks,and energy storage devices.The MEC platform can improve the flexibility,resilience,and RES hosting capability of a distribution grid through spatial-temporal energy reallocation based on the stochastic behaviors of RES and loads.The employment of MEC necessitates the development of complex scheduling and control schemes that can adaptively cope with the dynamic natures of both the power grid and the transportation network.The problem is formulated as a non-convex optimization problem to minimize the total generation cost,subject to the various constraints imposed by conventional and renewable energy sources,energy storage,and transportation networks,etc.The problem is solved by combining optimal power flow(OPF)with deep reinforcement learning(DRL)under the framework of deep deterministic policy gradient(DDPG).Simulation results demonstrate that the proposed MEC platform with DDPG can achieve significant cost reduction compared to conventional systems with static energy storage.展开更多
On the basis of several practical applications in many countries, this article reviews the potential market scale of radio frequency identification （RFID） and its applications in global postal and courier services t...On the basis of several practical applications in many countries, this article reviews the potential market scale of radio frequency identification （RFID） and its applications in global postal and courier services through studies and analyses. It gives some suggestions and options in the development of RFID and its application in postal and courier services.展开更多
In the busy streets of Lusaka,Zambia’s capital,Joel Kangwa fired up his red Haojue.It is not just a motorbike.It is the reason he wakes up each morning with purpose.He kicked the starter and the engine responded with...In the busy streets of Lusaka,Zambia’s capital,Joel Kangwa fired up his red Haojue.It is not just a motorbike.It is the reason he wakes up each morning with purpose.He kicked the starter and the engine responded with a low growl.“Working as a courier on my motorbike is a dream come true.I now earn more than double what I used to make as a salesman in the industrial area,”he said.展开更多
目的系统梳理新就业形态劳动者心理健康状况及相关影响因素。方法本研究采用范围综述的方法,分别在PubMed、Web of Science、PsycINFO、中国知网、万方5个数据库进行文献检索,筛选2015年11月—2024年10月的量化研究资料,并提取文献中的...目的系统梳理新就业形态劳动者心理健康状况及相关影响因素。方法本研究采用范围综述的方法,分别在PubMed、Web of Science、PsycINFO、中国知网、万方5个数据库进行文献检索,筛选2015年11月—2024年10月的量化研究资料,并提取文献中的作者、发表年份、地区、样本量、调查方式、评估工具、评估标准和结果等信息。结果通过检索数据库获得文献181篇,最终纳入符合要求的文献33篇。其中英文文献18篇,中文文献15篇,样本量为96~3381,研究类型以横截面研究为主。纳入的研究中抑郁症状发生率(16.8%~31.8%)和职业紧张发生率(31.87%~98.56%)显著高于一般人群,职业倦怠问题突出。人口学因素、个体心理因素及工作特征共同影响其心理健康。结论新业态劳动者普遍面临显著的心理健康风险,目前研究的证据类型存在异质性,未来应积极开展新业态劳动者心理健康的系统性研究,结合职业类型和区域特征进一步探索政策保障与社会支持体系的协同干预路径。展开更多
文摘Recently,e-commerce develops rapidly,advancing express delivery services,but the whole logistics are incomplete,especially for the issue of ＂the last one-kilometer ＂.For example,the research reviewed status quo and problems of Tianjin Agricultural University and made improvements on campus delivery services to explore the status quo and resolving ways,exploit the hint business opportunity in campus express model,improve efficiency and service attitude and get doublewin of both parties involved.
基金supported by a grant from R&D program of the Korea Evaluation Institute of Industrial Technology(20015047).
文摘With the growth of the online market,demand for logistics and courier cargo is increasing rapidly.Accordingly,in the case of urban areas,road congestion and environmental problems due to cargo vehicles are mainly occurring.The joint courier logistics system,a plan to solve this problem,aims to establish an efficient logistics transportation system by utilizing one joint logistics delivery terminal by several logistics and delivery companies.However,several courier companies use different types of courier invoices.Such a system has a problem of information data transmission interruption.Therefore,the data processing process was systematically analyzed,a practically feasible methodology was devised,and delivery invoice information processing standards were established for this.In addition,the importance of this paper can be emphasized in terms of data processing in the logistics sector,which is expected to grow rapidly in the future.The results of this study can be used as basic data for the implementation of the logistics joint delivery terminal system in the future.And it can be used as a basis for securing the operational reliability of the joint courier logistics system.
文摘We propose a new architecture of truck-based mobile energy couriers(MEC)for power distribution networks with high penetration of renewable energy sources(RES).Each MEC is a truck equipped with high-density inverters,converters,capacitor banks,and energy storage devices.The MEC platform can improve the flexibility,resilience,and RES hosting capability of a distribution grid through spatial-temporal energy reallocation based on the stochastic behaviors of RES and loads.The employment of MEC necessitates the development of complex scheduling and control schemes that can adaptively cope with the dynamic natures of both the power grid and the transportation network.The problem is formulated as a non-convex optimization problem to minimize the total generation cost,subject to the various constraints imposed by conventional and renewable energy sources,energy storage,and transportation networks,etc.The problem is solved by combining optimal power flow(OPF)with deep reinforcement learning(DRL)under the framework of deep deterministic policy gradient(DDPG).Simulation results demonstrate that the proposed MEC platform with DDPG can achieve significant cost reduction compared to conventional systems with static energy storage.
文摘On the basis of several practical applications in many countries, this article reviews the potential market scale of radio frequency identification （RFID） and its applications in global postal and courier services through studies and analyses. It gives some suggestions and options in the development of RFID and its application in postal and courier services.
文摘In the busy streets of Lusaka,Zambia’s capital,Joel Kangwa fired up his red Haojue.It is not just a motorbike.It is the reason he wakes up each morning with purpose.He kicked the starter and the engine responded with a low growl.“Working as a courier on my motorbike is a dream come true.I now earn more than double what I used to make as a salesman in the industrial area,”he said.
文摘目的系统梳理新就业形态劳动者心理健康状况及相关影响因素。方法本研究采用范围综述的方法,分别在PubMed、Web of Science、PsycINFO、中国知网、万方5个数据库进行文献检索,筛选2015年11月—2024年10月的量化研究资料,并提取文献中的作者、发表年份、地区、样本量、调查方式、评估工具、评估标准和结果等信息。结果通过检索数据库获得文献181篇,最终纳入符合要求的文献33篇。其中英文文献18篇,中文文献15篇,样本量为96~3381,研究类型以横截面研究为主。纳入的研究中抑郁症状发生率(16.8%~31.8%)和职业紧张发生率(31.87%~98.56%)显著高于一般人群,职业倦怠问题突出。人口学因素、个体心理因素及工作特征共同影响其心理健康。结论新业态劳动者普遍面临显著的心理健康风险,目前研究的证据类型存在异质性,未来应积极开展新业态劳动者心理健康的系统性研究,结合职业类型和区域特征进一步探索政策保障与社会支持体系的协同干预路径。
