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Effects of spot size on the operation mode of Ga As photoconductive semiconductor switch employing extrinsic photoconductivity
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作者 韦金红 李嵩 +5 位作者 陈红 曾凡正 贾成林 付泽斌 葛行军 钱宝良 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第5期91-99,共9页
To guide the illuminating design to improve the on-state performances of gallium arsenide(GaAs)photoconductive semiconductor switch(PCSS),the effect of spot size on the operation mode of GaAsPCSS based on a semi-insul... To guide the illuminating design to improve the on-state performances of gallium arsenide(GaAs)photoconductive semiconductor switch(PCSS),the effect of spot size on the operation mode of GaAsPCSS based on a semi-insulating wafer with a thickness of 1 mm,triggered by a 1064-nm extrinsic laser beam with the rectangular spot,has been investigated experimentally.It is found that the variation of the spot size in length and width can act on the different parts of the output waveform integrating the characteristics of the linear and nonlinear modes,and then significantly boosts the PCSS toward different operation modes.On this basis,a two-channel model containing the active and passive parts is introduced to interpret the relevant influencing mechanisms.Results indicate that the increased spot length can peak the amplitude of static domains in the active part to enhance the development of the nonlinear switching,while the extended spot width can change the distribution of photogenerated carriers on both parts to facilitate the linear switching and weaken the nonlinear switching,which have been proved by comparing the domain evolutions under different spot sizes. 展开更多
关键词 GaAs PCSS operation mode spot size on-state performances two-channel model domain evolution
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Energy Storage Operation Modes in Typical Electricity Market and Their Implications for China
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作者 Junhui Liu Yihan Zhang +4 位作者 Zijian Meng Meng Yang Yao Lu Zhe Chai Zhaoyuan Wu 《Energy Engineering》 EI 2024年第9期2409-2434,共26页
As the Chinese government proposes ambitious plans to promote low-carbon transition,energy storage will play a pivotal role in China’s future power system.However,due to the lack of a mature electricity market enviro... As the Chinese government proposes ambitious plans to promote low-carbon transition,energy storage will play a pivotal role in China’s future power system.However,due to the lack of a mature electricity market environment and corresponding mechanisms,current energy storage in China faces problems such as unclear operational models,insufficient cost recovery mechanisms,and a single investment entity,making it difficult to support the rapid development of the energy storage industry.In contrast,European and American countries have already embarked on certain practices in energy storage operation models.Through exploration of key issues such as investment entities,market participation forms,and cost recovery channels in both front and back markets,a wealth of mature experiences has been accumulated.Therefore,this paper first summarizes the existing practices of energy storage operation models in North America,Europe,and Australia’s electricity markets separately from front and back markets,finding that perfect market mechanisms and reasonable subsidy policies are among the main drivers for promoting the rapid development of energy storage markets.Subsequently,combined with the actual development of China’s electricity market,it explores three key issues affecting the construction of costsharing mechanisms for energy storage under market conditions:Market participation forms,investment and operation modes,and cost recovery mechanisms.Finally,in line with the development expectations of China’s future electricitymarket,suggestions are proposed fromfour aspects:Market environment construction,electricity price formation mechanism,cost sharing path,and policy subsidy mechanism,to promote the healthy and rapid development of China’s energy storage industry. 展开更多
关键词 Electricity market energy storage operational mode cost-sharing mechanism
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Exploration of Operation and Maintenance Management Mode and Innovation Mechanism of Pilot Base of Chemical Park
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作者 Shenggan ZHU Tengfei SHANG 《Asian Agricultural Research》 2024年第9期16-18,22,共4页
Based on the current situation of the operation and maintenance management of the pilot base in many chemical parks in China,this paper conducts an in-depth exploration of the operation and maintenance management and ... Based on the current situation of the operation and maintenance management of the pilot base in many chemical parks in China,this paper conducts an in-depth exploration of the operation and maintenance management and innovation mode of the pilot base from the aspects of the evaluation of the pilot project entering the park,safety and environmental protection supervision,pilot mode,and industrialization mode of the pilot test results,so as to provide solutions for accelerating the process and industrialization of the pilot project and realizing the innovation value of the pilot base. 展开更多
关键词 Chemical parks Pilot base operation and maintenance mode INDUSTRIALIZATION EXPLORATION
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An Improved Multi-Objective Hybrid Genetic-Simulated Annealing Algorithm for AGV Scheduling under Composite Operation Mode
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作者 Jiamin Xiang Ying Zhang +1 位作者 Xiaohua Cao Zhigang Zhou 《Computers, Materials & Continua》 SCIE EI 2023年第12期3443-3466,共24页
This paper presents an improved hybrid algorithm and a multi-objective model to tackle the scheduling problem of multiple Automated Guided Vehicles(AGVs)under the composite operation mode.The multi-objective model aim... This paper presents an improved hybrid algorithm and a multi-objective model to tackle the scheduling problem of multiple Automated Guided Vehicles(AGVs)under the composite operation mode.The multi-objective model aims to minimize the maximum completion time,the total distance covered by AGVs,and the distance traveled while empty-loaded.The improved hybrid algorithm combines the improved genetic algorithm(GA)and the simulated annealing algorithm(SA)to strengthen the local search ability of the algorithm and improve the stability of the calculation results.Based on the characteristics of the composite operation mode,the authors introduce the combined coding and parallel decoding mode and calculate the fitness function with the grey entropy parallel analysis method to solve the multi-objective problem.The grey entropy parallel analysis method is a combination of the grey correlation analysis method and the entropy weighting method to solve multi-objective solving problems.A task advance evaluation strategy is proposed in the process of crossover and mutation operator to guide the direction of crossover and mutation.The computational experiments results show that the improved hybrid algorithm is better than the GA and the genetic algorithm with task advance evaluation strategy(AEGA)in terms of convergence speed and solution results,and the effectiveness of the multi-objective solution is proved.All three objectives are optimized and the proposed algorithm has an optimization of 7.6%respectively compared with the GA and 3.4%compared with the AEGA in terms of the objective of maximum completion time. 展开更多
关键词 AGV scheduling composite operation mode genetic algorithm simulated annealing algorithm task advance evaluation strategy
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Discussion on Biomass Fuel Operation Model Dominated by Tobacco Straw
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作者 谢永辉 吴永明 +3 位作者 杨永平 欧阳进 王志江 高福宏 《Agricultural Science & Technology》 CAS 2017年第8期1559-1562,共4页
With the gradually popularization of replacing coal tobacco leaf flue-curing technology with biomass fuel, the operation of raw materials collection and transportation links faces many problems. In this paper, the exi... With the gradually popularization of replacing coal tobacco leaf flue-curing technology with biomass fuel, the operation of raw materials collection and transportation links faces many problems. In this paper, the existing problems in view of biomass fuel operation dominated by tobacco straw in current tobacco leaf flue-curing were analyzed, and the 3 kinds of fuel operation modes ("contracting processing mode, displacement mode and commercialization mode") were put forward, each of which was also briefly analyzed, with the aim to expand the way of thinking about biomass raw materials processing by cooperative organization. 展开更多
关键词 Flue-curing Biomass fuel Tobacco straw operation mode
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Stable single-mode operation of 894.6 nm VCSEL at high temperatures for Cs atomic sensing 被引量:4
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作者 向磊 张星 +3 位作者 张建伟 宁永强 Werner Hofmann 王立军 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第7期130-133,共4页
In this paper, stable single-mode operation at high temperatures is produced by the surface-relief-integrated vertical cavity surface emitting laser(VCSEL). The gain-cavity mode detuning technique is employed to rea... In this paper, stable single-mode operation at high temperatures is produced by the surface-relief-integrated vertical cavity surface emitting laser(VCSEL). The gain-cavity mode detuning technique is employed to realize high operating temperatures for the VCSEL. The surface relief is etched in the centre of the top side as a mode discriminator for the fundamental mode output, and the threshold current minimum is 1.94 mA at high temperatures by the gain-cavity mode detuning technique. Maximum single-fundamental-mode output power of 0.45 mW at 80℃ is obtained, and the side mode suppression ratios(SMSRs) are more than 30 dB with increasing temperature and current, respectively. 展开更多
关键词 single-mode operation surface relief gain-cavity mode detuning vertical cavity surface emitting laser(VCSEL)
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Study on integrated development and hybrid operation mode of nuclear power plant and pumped-storage power station 被引量:6
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作者 Haizheng Wang Caide Peng 《Global Energy Interconnection》 2019年第4期336-341,共6页
The nuclear power plant is suitable for base-load operation, while the pumped-storage unit mainly gives play to capacity benefit in the electric power system;hence, the integrated development and hybrid operation mode... The nuclear power plant is suitable for base-load operation, while the pumped-storage unit mainly gives play to capacity benefit in the electric power system;hence, the integrated development and hybrid operation mode of the two can better meet the needs of the electric power system. This article first presents an analysis of the necessity and superiority of such mode, then explains its meaning and analyzes the working routes. Finally, it proposes the business modes as follows: low price pumping water electricity plus nuclear power in the near term;nuclear power shifted to pumped storage power participating in market competition in the middle term;and, in the long term, nuclear power shifted to pumped storage power as primary and serving as an electric power system when needed. 展开更多
关键词 NUCLEAR POWER PLANT Pumped-storage POWER STATION Integrated development HYBRID operation modeS
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Operation Mode on Pulse Modulation in Atmospheric Radio Frequency Glow Discharges 被引量:1
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作者 张杰 郭颖 +2 位作者 黄晓江 张菁 石建军 《Plasma Science and Technology》 SCIE EI CAS CSCD 2016年第10期974-977,共4页
The discharge operation regime of pulse modulated atmospheric radio frequency (RF) glow discharge in helium is investigated on the duty cycle and frequency of modulation pulses. The characteristics of radio frequenc... The discharge operation regime of pulse modulated atmospheric radio frequency (RF) glow discharge in helium is investigated on the duty cycle and frequency of modulation pulses. The characteristics of radio frequency discharge burst in terms of breakdown voltage, alpha(s)- gamma(γ) mode transition voltage and current are demonstrated by the discharge current voltage characteristics. The minimum breakdown voltage of RF discharge burst was obtained at the duty cycle of 20% and frequency of 400 kHz, respectively. The α-γ mode transition of RF discharge burst occurs at higher voltage and current by reducing the duty cycle and elevating the modulation frequency before the RF discharge burst evolving into the ignition phase, in which the RF discharge burst can operate stably in the γ mode. It proposes that the intensity and stability of RF discharge burst can be improved by manipulating the duty cycle and modulation frequency in pulse modulated atmospheric RF glow discharge. 展开更多
关键词 pulse modulation atmospheric glow discharge discharge operation mode
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The Architecture and Operation Mode of Virtual Supply Chain 被引量:4
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作者 Xumei Zhang Dan Bin 《Chinese Business Review》 2003年第4期53-59,共7页
Virtual supply chain, as a modern collaborative mode of enterprises, is important to decrease the cost and improve the efficiency and the quality of supply chains, and to satisfy customers. Based on the analysis of th... Virtual supply chain, as a modern collaborative mode of enterprises, is important to decrease the cost and improve the efficiency and the quality of supply chains, and to satisfy customers. Based on the analysis of the conception and characteristics of the virtual supply chain, the architecture of virtual supply chain is built, and corresponding objects, tasks, information and technologies are described. Three operation modes-Order-driven, manufacturer-centered, and retailer-centered are researched. As a case, virtual supply chain is applied in the electronic commerce and networked customization system of ceramic products. 展开更多
关键词 virtual supply chain architecture operation mode
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An integrated operation mode for green logistics of enterprises 被引量:1
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作者 Yu Chengxue Wu Chunyou Fan Yu 《Ecological Economy》 2006年第4期348-356,共9页
The integrated operation mode of green logistics is a new enterprise's logistics operation and management mode concerning, environment issues based on the traditional integrated mode. Through comparative study on the... The integrated operation mode of green logistics is a new enterprise's logistics operation and management mode concerning, environment issues based on the traditional integrated mode. Through comparative study on the integrated operation mode of logistics based on self.operation, the operation mode of an integrated logistics of enterprises based on TPL the green-supply chain management, and the operation mode of eco-iadustrial park (EIP), a relatively complete objective system structure is put forward for the integrated operation mode of green logistics of enterprises. Furthermore, the correspondent practical mode is also set up to help enterprises, especially for the manufacturing companies, not only improve the environment effectively, but support the technological framework for the enterprise's economic performance and social benefits in order to realize economic, social and environmental benefits are concerned. 展开更多
关键词 ENVIRONMENT Green logistics INTEGRATION operational mode
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Research on representative brand and operation mode of second-hand clothing in Europe 被引量:1
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作者 Ying Tang Arturo Dell'Acqua Bellavitis 《服饰导刊》 2020年第3期23-32,共10页
In order to study the current situation and operation mode of second-hand clothing brand in Europe,this paper makes a field investigation on the second-hand clothing shops in European countries.Through classification ... In order to study the current situation and operation mode of second-hand clothing brand in Europe,this paper makes a field investigation on the second-hand clothing shops in European countries.Through classification of the inspected shops,five representative brands with certain popularity and influence and different operation modes in Europe are selected out from high-grade antique boutiques,non-profit charity organizations,professional retailers and middle-grade consignment shops in the second-hand clothing market.This paper analyzes and discusses the development history of stores,the source of goods,the form of stores,and the operation mode,so as to provide a reference for the development and standardization of the second-hand clothing market in China. 展开更多
关键词 EUROPE second-hand clothing BRAND operation mode
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Application and effect evaluation on Acknowledge-Introduce-Duration-Explanation-Thank you(AIDET)communication mode in cataract daytime operation nursing 被引量:1
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作者 Kun Fu Shuping Li Sufen Lu 《Annals of Eye Science》 2020年第2期12-20,共9页
Background:To explore the application effect of Acknowledge-Introduce-Duration-Explanation-Thank you(AIDET)communication mode in reducing anxiety and improving the care services satisfaction of the patients.Methods:Th... Background:To explore the application effect of Acknowledge-Introduce-Duration-Explanation-Thank you(AIDET)communication mode in reducing anxiety and improving the care services satisfaction of the patients.Methods:The 100 cases undergoing cataract daytime operation from February to July 2019 were divided into test group and control group.The test group conducted health education and nursing care for patients during admission,pre-operation,post-operation,and discharge according to the AIDET communication mode.And the control group was given health education and nursing care to the patients according to the traditional way of communication.Results:The difference of the socioeconomic information between these two groups showed no statistical significance.The care services satisfaction score in the test group was statistically higher than that in the control group(P<0.05).The Self-Rating Anxiety Scale(SAS)score in the test group was significantly lower than that in the control group(P<0.01).This result indicated that the patients suffered less anxiety with the AIDET mode of communication.Conclusions:The application of AIDET communication mode to the nursing service of cataract daytime operation can reduce the tension and anxiety of the patients from the treatment and improve their satisfaction to care services. 展开更多
关键词 Acknowledge-Introduce-Duration-Explanation-Thank you communication mode(AIDET communication mode) CATARACT daytime operation nursing effect evaluation
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Multimode Design and Analysis of an Integrated Leg-Arm Quadruped Robot with Deployable Characteristics
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作者 Fuqun Zhao Yifan Wu +4 位作者 Xinhua Yang Xilun Ding Kun Xu Sheng Guo Xiaodong Jin 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2024年第3期41-61,共21页
To improve locomotion and operation integration, this paper presents an integrated leg-arm quadruped robot(ILQR) that has a reconfigurable joint. First, the reconfigurable joint is designed and assembled at the end of... To improve locomotion and operation integration, this paper presents an integrated leg-arm quadruped robot(ILQR) that has a reconfigurable joint. First, the reconfigurable joint is designed and assembled at the end of the legarm chain. When the robot performs a task, reconfigurable configuration and mode switching can be achieved using this joint. In contrast from traditional quadruped robots, this robot can stack in a designated area to optimize the occupied volume in a nonworking state. Kinematics modeling and dynamics modeling are established to evaluate the mechanical properties for multiple modes. All working modes of the robot are classified, which can be defined as deployable mode, locomotion mode and operation mode. Based on the stability margin and mechanical modeling, switching analysis and evaluation between each mode is carried out. Finally, the prototype experimental results verify the function realization and switching stability of multimode and provide a design method to integrate and perform multimode for quadruped robots with deployable characteristics. 展开更多
关键词 Quadruped robot Multimode design mode switching Locomotion operation
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Experimental investigation of the polarityswitching process with different bipolar ionic liquid thruster operating frequencies
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作者 吴湘蓓 杨铖 +1 位作者 罗嘉伟 沈岩 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第6期1-13,共13页
The bipolar ionic liquid thruster employs ionic liquid as a propellant to discharge positively and negatively charged high-energy particles under an alternating current(AC)power source,effectively suppressing electroc... The bipolar ionic liquid thruster employs ionic liquid as a propellant to discharge positively and negatively charged high-energy particles under an alternating current(AC)power source,effectively suppressing electrochemical reaction and ensuring charge neutrality.Determining an optimal AC supply power source frequency is critical for sustained stable thruster operation.This study focuses on the emission characteristics of the ionic liquid thruster under varied AC conditions.The AC power supply was set within the frequency range of 0.5-64 Hz,with eight specific frequency conditions selected for experimentation.The experimental results indicate that the thruster operates steadily within a voltage range of±1470 to±1920 V,with corresponding positive polarity current ranging from 0.41 to 4.91μA and negative polarity current ranging from−0.49 to−4.10μA.During voltage polarity switching,an emission delay occurs,manifested as a prominent peak signal caused by circuit capacitance characteristics and a minor peak signal resulting from liquid droplets.Extended emission test was conducted at 16 Hz,demonstrating approximately 1 h and 50 min of consistent emission before intermittent discharge.These findings underscore the favorable impact of AC conditions within the 8-16 Hz range on the self-neutralization capability of the ionic liquid thruster. 展开更多
关键词 space electric propulsion ionic liquid thruster bipolar operation mode FREQUENCY
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Study on Organization and Operation Mode of SMT-MG
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作者 LI Chunquan~(1.2) YU Tao~1 ZHOU Dejian~3 1.CIMS Center,Shanghai University,Shanghai 210029,China 2.Dept.of Electronic Machinery and Traffic Engineering,Guilin University of Electronic Technology,Gailin 541004,China 3.Dept.of Electronic Machinery and Traffic Engineering,Guilin University of Technology,Guilin 541004,China 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S2期453-458,共6页
SNIT-MG is a typical application of grid in electric product manufacturing.The organization and operation mode are hey problems in SMT-MG.In this paper,SMT-MG is taken as research object.Its mesh three-dimensional mat... SNIT-MG is a typical application of grid in electric product manufacturing.The organization and operation mode are hey problems in SMT-MG.In this paper,SMT-MG is taken as research object.Its mesh three-dimensional matrix orga- nization mode is presented.Meanwhile from operation foundation,process,environment and target four aspects,operation prin- ciples are explored.Operation mechanisms of SMT-MG such as adaptive evolution,PUSH/PULL driving,cooperation and game,feedback,regulation/control,coordination,impetus mechanism and so on are studied.Finally,the operation flow of SMT-MG is introduced. 展开更多
关键词 ORGANIZATION mode operation mode SMT-MG
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Design and Application of Optimization Software for Substation Operation Mode Based on EMS
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作者 Nannan Gao Jinxin Huang Hongbo Li 《Energy and Power Engineering》 2013年第4期689-692,共4页
This paper proposes a kind of optimization software for substation operation mode, which can not only read data on-line from EMS, but also calculate total loss of substations in parallel operation, split operation or ... This paper proposes a kind of optimization software for substation operation mode, which can not only read data on-line from EMS, but also calculate total loss of substations in parallel operation, split operation or individual operation mode. It can also select the most optimized way and feed the conclusion back to EMS to make substations operate in the most optimized way. The software is suitable for optimization of substation in rural power grid. 展开更多
关键词 OPTIMIZATION SUBSTATION operation mode ON-LINE CLOSED LOOP
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Operational Mode Identification Based on Sliding Time Window Method and Eigensystem Realization Algorithm
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作者 WANG Liang ZHANG Yan +1 位作者 CAI Yipeng NANGONG Zijun 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2019年第5期838-844,共7页
The identification result of operational mode is eurychoric while operational mode identification is investigated under ambient excitation,which is influenced by the signal size and the time interval.The operational m... The identification result of operational mode is eurychoric while operational mode identification is investigated under ambient excitation,which is influenced by the signal size and the time interval.The operational mode identification method,which is based on the sliding time window method and the eigensystem realization algorithm(ERA),is investigated to improve the identification accuracy and stability.Firstly,the theory of the ERA method is introduced.Secondly,the strategy for decomposition and implementation is put forward,including the sliding time window method and the filtration method of modes.At last,an example is studied,where the model of a cantilever beam is built and the white noise exciting is input.Results show that the operational mode identification method can realize the modes,and has high robustness to the signal to noise ratio and signal size. 展开更多
关键词 mode identification ROBUST eigensystem realization algorithm(ERA) operational mode damping ratio
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Operation Modes and Control Schemes for Internet-Based Teleoperation System with Time Delay
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作者 曾庆军 宋爱国 《Journal of Shanghai Jiaotong university(Science)》 EI 2003年第2期169-174,共6页
Teleoperation system plays an important role in executing task under hazard environment. As the computer networks such as the Internet are being used as the communication channel of teleoperation system, varying time ... Teleoperation system plays an important role in executing task under hazard environment. As the computer networks such as the Internet are being used as the communication channel of teleoperation system, varying time delay causes the overall system unstable and reduces the performance of transparency. This paper proposed twelve operation modes with different control schemes for teleoperation on the Internet with time delay. And an optimal operation mode with control scheme was specified for teleoperation with time delay, based on the tradeoff between passivity and transparency properties. It experimentally confirmed the validity of the proposed optimal mode and control scheme by using a simple one DOF master-slave manipulator system. 展开更多
关键词 teleoperation system operation modes TIME-DELAY
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Operation mode of smart cities: A comparative study
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作者 DONG Jing-xuan 《Ecological Economy》 2018年第3期190-199,共10页
The three aspects of construction, investment and operation belong to systematic projects of smart cities. Smart cities could not be fully accomplished merely with any single aspect being well done. Feasible and effic... The three aspects of construction, investment and operation belong to systematic projects of smart cities. Smart cities could not be fully accomplished merely with any single aspect being well done. Feasible and efficient models lay the foundation to set up modern smart cities. Standardized models arouse various intellectualized conceptions, and fulfill concrete practices. Reasonable operation modes make smart city system to be organic and dynamic, so that various intelligent attributes of smart cities would be fully exerted. The operation process promotes sustainable development of smart cities, on the condition of which intelligentized services be provided to urban residents. This aspect accounts for different results of different cases at home and abroad. By comparing different operation modes of smart city construction at home and abroad, this thesis focuses on backgrounds, contents and successful operations of typical urban constructions. Several chief operation modes of foreign smart city constructions are researched, thus provids references for the construction of smart cities in China, so that innovations of operation and management modes of smart cities in China are expected to occur, and hence push forward construction and development of smart cities in China. 展开更多
关键词 SMART CITY operation and MANAGEMENT operation mode COMPARATIVE study
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Discussi on on IPTV Operations Modes
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作者 Tang Xiongyan Chi Yuan (Institute of China Network Communications Group Corporation,Beijing 100176,China) 《ZTE Communications》 2006年第3期20-23,34,共5页
IPTV is a promising broadband video service to which telecom operators are attaching great importance. However,there are many challenges especially to confirm operations modes. Under the circumstances of industry regu... IPTV is a promising broadband video service to which telecom operators are attaching great importance. However,there are many challenges especially to confirm operations modes. Under the circumstances of industry regulation in China,the telecom operators may adopt a standard IPTV mode,IP+TV mode or pure IP mode according to specific requirements when deploying IPTV services that are personalized and interactive. The development of IPTV faces numerous difficulties such as unclear supervision policy,industry barrier difficult to be removed,vague profit models,and imperfect technology specifications. However,the general development tendency decides a bright future of IPTV. 展开更多
关键词 IPTV Discussi on on IPTV operations modes mode
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