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Spatial and Temporal Distribution Characteristics of Solar Energy Resources in Tibet

第十二届工业工程和工程管理国际会议

作者： WANG Yongchao hu yueming dept. of information college South-China Agricultural University Guangzhou P. R.. China 510000 GongDong Polytechnic Normal University P. R.. China 510665

＜正＞Many small manufacturing enterprises have to struggle for their survival in nowadays fierce competitions and therefore have no much good idea of how to implementing ERP in their *** the other hand many commercial ERP software platforms are too expensive or too complex for small firms to be *** paradox is the case in Peal River Delta Area（PRDA）in China,most rapidly developing manufacturing district in the *** this paper we analyze the characteristics of small manufacturing firms in PRDA and summarize that data standardization is more important than software system for these *** on this we put forward an ERP implementation strategy characterized by its easiness and *** then explain the basic functions of the *** strategy not only meet enterprises current needs,but also put a solid foundation for full implementation in enterprise’s future *** strategy has been applied in a home appliances firm and the result is promising.

关键词： ERP small manufacturing firms implementation strategy PRDA

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Energy Engineering 2024年第1期121卷 43-57页

作者： Yanbo Shen Yang Gao yueming hu Xin Yao Wenzheng Yu Yubing Zhang Public Meteorological Service Center China Meteorological AdministrationBeijing100081China Center forWind and Solar Energy Resources China Meteorological AdministrationBeijing100081China School of Applied Meteorology Nanjing University of Information Science&TechnologyNanjing210044China School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjing210044China

The Tibet Plateau is one of the regions with the richest solar energy resources in the *** the process of achieving carbon neutrality in China,the development and utilization of solar energy resources in the region will play an important *** this study,the gridded solar resource data with 1km resolution in Tibet were obtained by spatial correction and downscaling of SMARTS *** this basis,the spatial and temporal distribution characteristics of solar energy resources in the region in the past 30 years(1991–2020)are finely evaluated,and the annual global horizontal radiation resource is *** results show that:1)The average annual global horizontal radiation amount in Tibet is 1816 kWh/m^(2).More than 60%of the area belongs to the“Most abundant”(GHI≥1750 kWh/m^(2))area of China’s solar energy resources category A,and nearly 40%belongs to the“Quite abundant”(1400≤GHI<1750)area of China’s solar energy resource category B.2)In space,the solar energy resources in Tibet increased gradually from north to south and from east to ***,Central and Eastern Shigatse,Shannan,and Southwestern Ali are the most abundant cities,with a maximum annual radiation level of 2189 kWh/m2.3)In terms of time,the total horizontal radiation in Tibet was the highest in May and the lowest in December.74%of the total area belongs to the“Very stable”(R_(w)≥0.47)area of solar resource stability category A,and 26%belongs to the“stable”(0.36≤R_(w)<0.47)area of solar resource stability category *** energy resources in the region show the characteristics of both strong and *** solar energy resources in the region have shown a fluctuating downward trend over the past 30 years,with an average decline of about 12.86(kWh/m2)per decade.4)In terms of solar radiation resources reaching the earth’s surface,the theoretical total amount of annual horizontal radiation in Tibet is about 240.07 billion tons of standard coal or 222.91 billion kilowatts on average.

关键词： Tibet solar resource spatiotemporal distribution

Dynamic Update Scheme of Spectrum information Based on Spectrum Opportunity Incentive in the Database-Assisted Dynamic Spectrum Management

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China Communications 2024年第3期21卷 75-90页

作者： Zhang Yu Chen Yong He Panfeng Cai yueming Sixty-third Research Institute National University of Defense TechnologyNanjing 210007China college of Communications Engineering Army of Engineering UniversityNanjing 210007China

To solve the problem of delayed update of spectrum information(SI) in the database assisted dynamic spectrum management(DB-DSM), this paper studies a novel dynamic update scheme of SI in DB-DSM. Firstly, a dynamic update mechanism of SI based on spectrum opportunity incentive is established, in which spectrum users are encouraged to actively assist the database to update SI in real time. Secondly, the information update contribution(IUC) of spectrum opportunity is defined to describe the cost of accessing spectrum opportunity for heterogeneous spectrum users, and the profit of SI update obtained by the database from spectrum allocation. The process that the database determines the IUC of spectrum opportunity and spectrum user selects spectrum opportunity is mapped to a Hotelling model. Thirdly, the process of determining the IUC of spectrum opportunities is further modelled as a Stackelberg game by establishing multiple virtual spectrum resource providers(VSRPs) in the database. It is proved that there is a Nash Equilibrium in the game of determining the IUC of spectrum opportunities by VSRPs. Finally, an algorithm of determining the IUC based on a genetic algorithm is designed to achieve the optimal IUC. The-oretical analysis and simulation results show that the proposed method can quickly find the optimal solution of the IUC, and ensure that the spectrum resource provider can obtain the optimal profit of SI update.

关键词： database-assisted dynamic spectrum management Hotelling information updating contribution spectrum information updating Stackelberg

Analysis of Current Research and Future Development Trends of Applying Solar Energy in Street Lighting

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Journal of Electronic Research and Application 2024年第3期8卷 191-197页

作者： Liyan Zhang Qingying Zhou yueming Zhan hu Guo Chongqing Energy college Chongqing 402260China Chongqing No.94 Junior Middle School Chongqing 400080China

In the context of promoting green energy transition and addressing climate change globally,solar energy,as a clean and renewable energy source,has gradually become a hot topic for *** streetlight systems realize energy self-sufficiency and environment-friendly lighting by integrating photovoltaic power generation technology and efficient LED lighting *** comprehensively analyzing the current status of the application of solar streetlights at home and abroad,this paper discusses its technical advantages,market penetration,and challenges in its *** terms of technical characteristics,this paper focuses on analyzing the key technologies such as energy conversion efficiency and intelligent control systems of solar streetlights.

关键词： Solar streetlights Green energy Photovoltaic power generation LED lighting Intelligent control system

Age of information for Short-Packet Covert Communication with Time Modulated Retrodirective Array

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China Communications 2024年第4期21卷 23-37页

作者： Ma Yue Ma Ruiqian Lin Zhi Yang Weiwei Cai yueming Miao Chen Wu Wen Key Laboratory of Near-Range RF Sensing ICs&Microsystems(NJUST) Ministry of EducationSchool of Electronic and Optical EngineeringNanjing University of Science and TechnologyNanjing 210094China college of Electronic Engineering National University of Defense TechnologyHefei 230037China college of Communications Engineering Army Engineering University of PLANanjing 210007China

In this paper,the covert age of information(CAoI),which characterizes the timeliness and covertness performance of communication,is first investigated in the short-packet covert communication with time modulated retrodirective array(TMRDA).Specifically,the TMRDA is designed to maximize the antenna gain in the target direction while the side lobe is sufficiently *** this basis,the covertness constraint and CAoI are derived in closed *** facilitate the covert transmission design,the transmit power and block-length are jointly optimized to minimize the CAoI,which demonstrates the trade-off between covertness and *** results illustrate that there exists an optimal block-length that yields the minimum CAoI,and the presented optimization results can achieve enhanced performance compared with the fixed block-length ***,we observe that smaller beam pointing error at Bob leads to improvements in CAoI.

关键词： age of information covert communication retrodirective array time modulation

A review of electrospun separators for lithium-based batteries: Progress and application prospects

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Carbon Energy 2024年第9期6卷 109-155页

作者： Xiangru Sun Ying Zhou Dejun Li Kai Zhao Liqun Wang Peiran Tan Hongyang Dong yueming Wang Ji Liang college of Chemistry Tianjin Normal UniversityTianjinChina Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials College of Physics and Materials ScienceTianjin Normal UniversityTianjinChina Power Battery and System Research Center Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina Dagong Equipment Manufacturing(Tianjin)Co.Ltd. TianjinChina Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjinChina

Due to the limitations of the raw materials and processes involved,polyolefin separators used in commercial lithium-ion batteries(LIBs)have gradually failed to meet the increasing requirements of high-end batteries in terms of energy density,power density,and ***,it is very important to develop next-generation separators for advanced lithium(Li)-based recharge-able batteries including LIBs and Li-S *** nanofiber membranes fabricated via electrospinning technology are highly attractive candidates for high-end separators due to their simple processes,low-cost equipment,controllable microporous structure,wide material applicability,and availability of multiple *** this review,the electrospinning technologies for separators are reviewed in terms of devices,process and environment,and polymer solution ***,strategies toward the improvement of electrospun separators in advanced LIBs and Li-S batteries are presented in terms of the compositions and the structure of nanofibers and ***,the challenges and prospects of electrospun separators in both academia and industry are *** anticipate that these systematic discussions can provide information in terms of commercial applications of electrospun separators and offer new perspectives for the design of functional electrospun separators for advanced Li-based batteries.

关键词： electrospinning Li-metal batteries Li-S batteries lithium-ion batteries separator

面向商业航天卫星成本效益的三模冗余软错误防护技术:近似计算的实践

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电子与信息学报 2024年第5期46卷 1604-1612页

作者：李炎胡岳鸣曾晓洋复旦大学集成芯片与系统全国重点实验室上海201203

三模冗余(TMR)作为如今集成电路可靠性领域中最为常用且有效的软错误加固技术,在满足高容错要求之时,不可避免地牺牲了庞大的硬件损耗。为实现面积、功耗等硬件性能和容错电路加固能力的折中考虑,适应低成本高可靠性加固的时代需求,针... 详细信息

三模冗余(TMR)作为如今集成电路可靠性领域中最为常用且有效的软错误加固技术,在满足高容错要求之时,不可避免地牺牲了庞大的硬件损耗。为实现面积、功耗等硬件性能和容错电路加固能力的折中考虑,适应低成本高可靠性加固的时代需求,针对基于近似计算的三模冗余加固技术(ATMR)进行研究,该文提出一种基于近似门单元(ApxLib)的动态调整多目标优化框架(ApxLib+DAMOO)。首先,其基本优化框架采用非支配排序遗传算法(NSGA-Ⅱ)实现,通过极性分析与预创建的近似库对电路实现快速近似。随后,该框架提出动态概率调整和极性扩张两种创新机制,根据可测性分析对遗传算法中门单元的突变概率进行动态更新,对双向门单元进行定向识别和重构,以实现寻优效率和寻优效果的双重优化。实验结果表明,该文提出的优化框架与传统NSGA-Ⅱ相比,在相同硬件损耗下可实现最大10%~20%的额外软错误率(SER)降低,且其执行时间平均降低18.7%。

关键词：容软错误加固三模冗余近似计算多目标优化

Light People:*** D C Bradley(FRS)

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Light(Science & Applications) 2024年第9期13卷 1704-1719页

作者： Ruidong Xia Ying hu Key Laboratory for Organic Electronics&information Displays(KLOEID) Jiangsu-Singapore Joint Research Center for Organic/Bio Electronics&Information DisplaysInstitute of Advanced Materials(IAM)Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing 210023China Executive Management college of CHN ENERGY North District of Future Science CityChangping DistrictNo.7 Binhe AvenueBeijing 102211China

Editorial,The invention of organic light emitting diodes(LEDs)led to enormous excitement in both academe and industry in the late 1980’***,large area solution processability,roll-to-roll printing,low cost,and environmentally friendly are some of the advantages of organic semiconductor materials,which brought a new horizon for *** with the achievement of organic solar cells,transistors,lasers,and amplifiers,this has demonstrated potential applications of organic semiconductors in displays,lighting,solar energy generation,electronics,sensing and imaging,and many aspects of *** an enlightened conversation with Light:Science&Applications,*** Bradley(FRS),a pioneer in the field,shared his deep insights on past,current,and future exciting developments of organic optoelectronic materials and *** particular,he expressed his opinion on the hot topics related to organic optoelectronics research and application,such as the relationship between organic and inorganic semiconductors and the challenge of electrically pumped organic *** a successful scientist,Donal has also been co-founder of several organic optoelectronics innovation companies and research centers and a long-term academic administrator serving as a Head of Department,Centre Director,and Vice-Rector for Research at Imperial college,Head of the Mathematical,Physical,and Life Sciences Division at the University of Oxford,Vice-President for Research at King Abdullah University of Science and Technology and now Vice-President for Research and Innovation at NEOM U and Executive Director of the NEOM Education,Research and Innovation *** this interview,we also explore the major roles and events in Donal’s career experience from the invention of the first conjugated polymer LED in the world to the set-up of entrepreneurial companies,from Cambridge to Sheffield,Imperial college,and Oxford,from the UK to overseas,and from the establishment of the Cent

关键词： companies Director Bradley

Trial application of the envelope method to the potential ambiguity problem

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Nuclear Science and Techniques 2024年第1期35卷 73-80页

作者： Li-Yuan hu Yu-Shou Song Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering UniversityHarbin 150001China college of Nuclear Science and Technology Harbin Engineering UniversityHarbin 150001China Key Laboratory of Nuclear Safety and Advanced Nuclear Energy Technology Ministry of Industry and Information TechnologyHarbin 150001China

The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering *** a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering *** contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,***,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity *** this study,we conducted a trial application of the envelope method to the potential ambiguity *** envelope method was improved by including uncertainties in the experimental *** colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the *** each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is *** calculated angular distributions were decomposed into nearside and farside scattering *** the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside *** capability of the envelope method to analyze the potential ambiguities was also discussed.

关键词： Elastic scattering Optical potential ambiguities Envelope method Nearside/farside decomposition