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Direct evidence for efficient scattering of suprathermal electrons by whistler mode waves in the Martian magnetosphere
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作者 Tong Li Si Liu +8 位作者 Chang yang FuLiang Xiao hongming yang Sai Zhang ZhongLei Gao Qian He QingHua Zhou QiWu yang YiHua He 《Earth and Planetary Physics》 CAS CSCD 2023年第6期607-614,共8页
Whistler mode waves are critical emissions in magnetized plasmas that usually influence the electron dynamics in a planetary magnetosphere.In this paper,we present a unique event in the Martian magnetosphere in which ... Whistler mode waves are critical emissions in magnetized plasmas that usually influence the electron dynamics in a planetary magnetosphere.In this paper,we present a unique event in the Martian magnetosphere in which enhanced whistler mode waves(~10^(−11) V^(2)/m^(2)/Hz)with frequency of 0.1 f_(ce)-0.5 f_(ce) occurred,based on MAVEN data,exactly corresponding to a significant decrease of suprathermal electron fluxes.The diffusion coefficients are calculated by using the observed electric field wave spectra.The pitch angle diffusion coefficient can approach 10^(−2) s^(−1),which is much larger,by~100 times,than the momentum diffusion coefficient,indicating that pitch angle scattering dominates the whistler-electron resonance process.The current results can successfully explain the dropout of the suprathermal electrons in this event.This study provides direct evidence for whistler-driven electron losses in the Martian magnetosphere. 展开更多
关键词 whistler mode waves diffusion coefficients electron scattering Martian magnetosphere
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Complex Dynamics Analysis for Cournot Game with Bounded Rationality in Power Market 被引量:1
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作者 hongming yang Yongxi Zhang 《Journal of Electromagnetic Analysis and Applications》 2009年第1期48-60,共13页
In order to accurately simulate the game behaviors of the market participants with bounded rationality, a new dynamic Cournot game model of power market considering the constraints of transmission network is proposed ... In order to accurately simulate the game behaviors of the market participants with bounded rationality, a new dynamic Cournot game model of power market considering the constraints of transmission network is proposed in this paper. The model is represented by a discrete differential equations embedded with the maximization problem of the social benefit of market. The Nash equilibrium and its stability in a duopoly game are quantitatively analyzed. It is found that there are different Nash equilibriums with different market parameters corresponding to different operating conditions of power network, i.e., congestion and non-congestion, and even in some cases there is not Nash equilibrium at all. The market dynamic behaviors are numerically simulated, in which the periodic or chaotic behaviors are focused when the market parameters are beyond the stability region of Nash equilibrium. 展开更多
关键词 CHAOS DYNAMIC Model NASH EQUILIBRIUM POWER MARKET
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Demand Responsive Market Decision-Makings and Electricity Pricing Scheme Design in Low-Carbon Energy System Environment
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作者 hongming yang Qian Yu +2 位作者 Xiao Huang Ben Niu Min Qi 《Energy Engineering》 EI 2021年第2期285-301,共17页
The two-way interaction between smart grid and customers will continuously play an important role in enhan-cing the overall efficiency of the green and low-carbon electric power industry and properly accommodating int... The two-way interaction between smart grid and customers will continuously play an important role in enhan-cing the overall efficiency of the green and low-carbon electric power industry and properly accommodating intermittent renewable energy resources.Thus far,the existing electricity pricing mechanisms hardly match the technical properties of smart grid;neither can they facilitate increasing end users participating in the electri-city market.In this paper,several relevant models and novel methods are proposed for pricing scheme design as well as to achieve optimal decision-makings for market participants,in which the mechanisms behind are com-patible with demand response operation of end users in the smart grid.The electric vehicles and prosumers are jointly considered by complying with the technical constraints and intrinsic economic interests.Based on the demand response of controllable loads,the real-time pricing,rewarding pricing and insurance pricing methods are proposed for the retailers and their bidding decisions for the wholesale market are also presented to increase the penetration level of renewable energy.The proposed demand response oriented electricity pricing scheme can provide some useful operational references on the cooperative operation of controllable loads and renewable energy through the feasible retail and wholesale market pricing methods,and thereby enhancing the development of the low-carbon energy system. 展开更多
关键词 Controllable load demand response low-carbon energy system optimal decision retail pricing renewable energy smart grid wholesale pricing
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Clinical characteristics and treatment of burn wound sepsis in extensive burn patients: successful experience with eight cases
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作者 Jiake Chai Zhiyong Sheng +6 位作者 hongming yang Li Diao Ligen Li Jianchuan Gao Weiyi Gao Xiaoming Jia Zhenrong Guo 《感染.炎症.修复》 2000年第2期66-73,共8页
Eight burn wound sepsis patients, in which 6 cases were diagnosed as MODS and two as septic shock, were treated consecutively in our hospital from September 1997 to October 1998. The plasma concentration of IL-6, IL-8... Eight burn wound sepsis patients, in which 6 cases were diagnosed as MODS and two as septic shock, were treated consecutively in our hospital from September 1997 to October 1998. The plasma concentration of IL-6, IL-8, TNFα and LPS were assayed before and after surgical intervention, as well as when the patients vital signs became stable. The results showed: ①The patients' conditions abruptly deteriorated when the burn wound sepsis emerged. 展开更多
关键词 Burns Burn wound sepsis Characteristics Treatment Experience
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Vector Segment Routing for Large-Scale Multilayer Satellite Network
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作者 Weigang Bai hongming yang +2 位作者 Jincheng Tong Zhaotao Qin Ruochen Lyu 《Journal of Communications and Information Networks》 EI CSCD 2023年第1期24-36,共13页
With the expansion of satellite constellation,routing techniques for small-scale satellite networks have problems in routing overhead and forwarding efficiency.This paper proposes a vector segment routing method for l... With the expansion of satellite constellation,routing techniques for small-scale satellite networks have problems in routing overhead and forwarding efficiency.This paper proposes a vector segment routing method for large-scale multi layer satellite networks.A vector forwarding path is built based on the location between the source and the destination.Data packets are forwarded along this vector path,shielding the influence of satellite motion on routing forwarding.Then,a dynamic route maintenance strategy is suggested.In a multi layer satellite network,the low-orbit satellites are in charge of computing the routing tables for one area,and the routing paths are dynamically adjusted in the area in accordance with the network.The medium-orbit satellites maintain the connectivity of vector paths in multiple segmented areas.The forwarding mode based on the source and destination location improves the forwarding efficiency,and the segmented route maintenance mode decreases the routing overhead.The simulation results indicate that vector segment routing has significant performance advantages in end-to-end delay,packet loss rate,and throughput in a multi layer satellite network.We also simulate the impact of routing table update mechanism on network performance and overhead and give the performance of segmented vector routing in multi layer low-orbit satellite networks. 展开更多
关键词 routing technique routing overhead vector segment routing network load THROUGHPUT
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Assessment of Operational Performance in a Power Generation/Selling Integrated Company Using a Dynamic Proportional Adjustment Coefficient
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作者 Jingbin Wu hongming yang Sheng Xiang 《Energy Engineering》 EI 2024年第11期3263-3287,共25页
Currently,the operational performance assessment system in the power market primarily focuses on power generation and electricity retail companies,lacking a system tailored to the operational characteristics of power ... Currently,the operational performance assessment system in the power market primarily focuses on power generation and electricity retail companies,lacking a system tailored to the operational characteristics of power generation/selling integrated companies.Therefore,this article proposes an assessment index system for assessing the operational performance of a power generation/selling integrated company,encompassing three dimensions:basic capacity,development potential,and external environment.A dynamic proportional adjustment coefficient is designed,along with a subjective and objective weighting model for assessment indexes based on a combined weightingmethod.Subsequently,the operational performance of an integrated company is assessed using extension theory.The results in the case study demonstrate the feasibility and effectiveness of the proposed dynamic proportional adjustment coefficient. 展开更多
关键词 Power generation/selling integrated company dynamic proportional adjustment coefficient combined weighting extension theory assessment of operational performance
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Coordinated Demand Response of Rail Transit Load and Energy Storage System Considering Driving Comfort 被引量:11
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作者 hongming yang Wangda Shen +4 位作者 Qian Yu Junpeng Liu Yizhe Jiang Emmanuel Ackom Zhao yang Dong 《CSEE Journal of Power and Energy Systems》 SCIE CSCD 2020年第4期749-759,共11页
Electric trains typically travel across the railway networks in an inter-provincial,inter-city and intra-city manner.The electric train generally serves as a load/source in tractive/brake mode,through which power netw... Electric trains typically travel across the railway networks in an inter-provincial,inter-city and intra-city manner.The electric train generally serves as a load/source in tractive/brake mode,through which power networks and railway networks are closely coupled and mutually influenced.Based on the operational mode of rail trains and the characteristics of their load power,this paper proposes a coordinated optimal decisionmaking method of demand response for controllable load of rail trains and energy storage systems.First,a coordinated approach of dynamically adjusting the load of the controllable rail train in considering the driving comfort and energy storage battery is designed.Secondly,under the time conditions that satisfy the train’s operational diagram,the functional relationship between the train speed and the load power is presented.Based on this,in considering the constraints of the train’s arrival time,driving speed,motor power,and driving comfort,the capacity of energy storage batteries and other constraints,an optimization model for demand response in managing the traction power supply system under a two-part price and time-of-use(TOU)price is proposed.The objective is to minimize the energy consumption costs of rail transit trains,and optimize the speed trajectory of rail trains,the load power of traction system,and the output of energy storage batteries. 展开更多
关键词 Controllable traction load demand response driving comfort energy storage battery rail train speed trajectory
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Guidelines for burn rehabilitation in China 被引量:15
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作者 Chinese Burn Association Chinese Association of Burn Surgeons +32 位作者 Ying Cen Jiake Chai Huade Chen Jian Chen Guanghua Guo Chunmao Han Dahai Hu Jingning Huan Xiaoyuan Huang Chiyu Jia Cecilia WP Li-Tsang Jianan Li Zongyu Li Qun Liu Yi Liu Gaoxing Luo Guozhong Lv Xihua Niu Daizhi Peng Yizhi Peng Hongyan Qi Shunzhen Qi Zhiyong Sheng Dan Tang Yibing Wang Jun Wu Zhaofan Xia Weiguo Xie hongming yang Xianfeng Yi Lehua Yu Guoan Zhang The Chinese Burn Care and Rehabilitation Association 《Burns & Trauma》 SCIE 2015年第3期133-142,共10页
Quality of life and functional recovery after burn injury is the final goal of burn care,especially as most of burn patients survive the injury due to advanced medical science.However,dysfunction,disfigurement,contrac... Quality of life and functional recovery after burn injury is the final goal of burn care,especially as most of burn patients survive the injury due to advanced medical science.However,dysfunction,disfigurement,contractures,psychological problems and other discomforts due to burns and the consequent scars are common,and physical therapy and occupational therapy provide alternative treatments for these problems of burn patients.This guideline,organized by the Chinese Burn Association and Chinese Association of Burn Surgeons aims to emphasize the importance of team work in burn care and provide a brief introduction of the outlines of physical and occupational therapies during burn treatment,which is suitable for the current medical circumstances of China.It can be used as the start of the tools for burn rehabilitation. 展开更多
关键词 BURN REHABILITATION Physical therapy Occupational Therapy SCAR
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Multi-objective Distributed Wind Generation Planning in an Unbalanced Distribution System 被引量:3
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作者 Yu Zheng Zhao yang Dong +3 位作者 Ke Meng hongming yang Mingyong Lai Kit Po Wong 《CSEE Journal of Power and Energy Systems》 SCIE 2017年第2期186-195,共10页
In addition to increasing penetration of distributed generation(DG),the distribution system power flow may be significantly impacted by direction and magnitude.This paper proposes a method for optimal placement of win... In addition to increasing penetration of distributed generation(DG),the distribution system power flow may be significantly impacted by direction and magnitude.This paper proposes a method for optimal placement of wind DG considering the unbalanced operation of distribution systems.The objective function includes static voltage stability index,three-phase unbalance index,system reliability index,and DG investment cost.The untransposed distribution lines and unbalanced load are modelled,and corresponding static voltage stability index and system reliability considering DG penetrations are derived.The expected and stochastic daily distributed generation and demand profiles in four seasons are calculated to improve the accuracy.To solve this multi-objective optimization model,a fuzzy membership function is used to integrate the four individual objectives,and a sensitivity-based method is proposed to solve the model efficiently.Case study on IEEE 13-bus distribution 3-phase networks and 123-node test feeder successfully verifies the performance of the proposed approach. 展开更多
关键词 Distribution generation(DG) mixed integer programming unbalanced distribution systems voltage stability
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