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Nuclear Science and Techniques 2023年第11期34卷 174-198页

作者： Jiao‑Long Deng Tian‑Shi Wang En‑Ping Zhu Shuo Yuan Xiao‑Jing Liu Xiang Chai School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Micro-mobile heat pipe-cooled nuclear power plants are promising candidates for distributed energy resource power genera-tors and can be flexibly deployed in remote places to meet increasing electric power ***,previous steady-state simulations and experiments have deviated significantly from actual micronuclear system ***,a transient analysis is required for performance optimization and safety *** this study,a hardware-in-the-loop(HIL)approach was used to investigate the dynamic behavior of scaled-down heat pipe-cooled *** real-time features of the HIL architecture were interpreted and validated,and an optimal time step of 500 ms was selected for the thermal *** power transient was modeled using point kinetic equations,and a scaled-down thermal prototype was set up to avoid mod-eling unpredictable heat transfer behaviors and feeding temperature samples into the main program running on a desktop PC.A series of dynamic test results showed significant power and temperature oscillations during the transient process,owing to the inconsistency of the rapid nuclear reaction rate and large thermal *** proposed HIL approach is stable and effective for further studying of the dynamic characteristics and control optimization of solid-state small nuclear-powered systems at an early prototyping stage.

关键词： Micro-heat pipe-cooled nuclear reactor Hardware-in-the-loop dynamic evaluation Start-up/shut-down processes

dynamic evaluation on Regional Tourism Competitiveness:Urban Agglomeration of Shandong Peninsula,Eastern China

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Chinese Journal of Population,Resources and Environment 2009年第3期7卷 30-41页

作者： Li Xue Dong Suocheng Jin Xianfeng Zhang Guanghai Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate School of the Chinese Academy of Sciences Beiiinq 100049 China Management Institute of Ocean University of China Qingdao Shandong 266071 China

The article establishes the appraisal index system for entire urban agglomeration and its interior cities individually,concretely including five aspects:driving forces for tourism development,the level of tourism development,tourism impacts,tourism economic connection and tourism contributions of different cities to the whole urban *** tourism competitiveness has the characteristics of comprehensiveness,systematicness and dynamicness,the article attempts to apply the structural prediction means of system dynamics to evaluating tourism competitiveness,aiming to provide some research methods and analysis ideas for tourism competitiveness measurement and trends analysis in urban *** Shandong Peninsula urban agglomeration as the study area,the article simulates and analyzes the tourism competitiveness trend of the whole region and its interior cities from 2005 to 2020,and the result reflects that integrated development and regional combination of tourism are important means to upgrade tourism competitiveness in this region.

关键词： regional tourism competitiveness system dynamics dynamic evaluation Shandong Peninsula urban agglomeration

dynamic evaluation of groundwater resources in Zhangye Basin

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Research in Cold and Arid Regions 2016年第3期8卷 250-262页

作者： LiNa Mi HongLang Xiao ZhengLiang Yin ShengChun Xiao Key Laboratory of Ecohydrology of Inland River Basin Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences/Heihe Key Laboratory of Ecohydrology and Integrated River Basin ScienceLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

Groundwater resource is vital to the sustainable development of socio-economics in arid and semi-arid regions of Northwest China. An estimation of the groundwater resources variation in Zhangye Basin was made during 1985-2013 based on long-term groundwater observation data and geostatistical method. The results show that from 1985 to 2013, groundwater storage exhibited tremendous dissimilarity on temporal and spatial scale for the whole Zhangye Basin, especially before and after implementation of the water diversion policy. Trend of groundwater storage varied from quick to slow decline or increase. The accumulative groundwater storage decreased nearly 47.52~ 108 m3, and annual average depletion rate reached 1.64x 108 m3/a. Among which, the accumulative groundwater storage of the river and well water mixed irrigation district decreased by 37.48x 108 m3, accounting for about 78.87% of the total groundwater depletion of the Zhangye Basin. Accumulative depletion of groundwater storage varied in respective irrigation districts. Though groundwater resources depletion rate slowed down from 2005, the overall storage in the whole basin and re- spective districts during 1985-2013 was still in a severe deficit such that, the groundwater resource was in a rather negative balance, which could threaten the local aquifer. This is the joint effect of climate change and human activities, however human activities, such as water diversion policy and groundwater exploitation, became increasingly intense. Our research results could provide a reasonable estimation for the groundwater balance in Zhangye Basin, providing a scientific basis for water resources unified planning and, this method can provide a relatively reliable way of estimation for large scale groundwater resources.

关键词： groundwater resources dynamic evaluation grotmdwater storage Zhangye Basin

Research on the Real-Time dynamic evaluation of Public Transport Passenger Service Satisfaction Based on the Internet

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Journal of Shanghai Jiaotong university(Science) 2023年第1期28卷 39-51页

作者：罗京周岱谭云龙夏甘霖赵国华 School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Guangzhou Transport Research Institute Guangzhou 510627China Shanghai University of Political Science and Law Shanghai 201701China Design&Research Institute Shanghai Jiao Tong UniversityShanghai 200030China Consulting Department of PPP Research Center Shanghai Jiao Tong UniversityShanghai 200030China

The current method of evaluating passenger satisfaction primarily adopts the traditional static evaluation mode,which can hardly satisfy the dynamic regulatory requirements of highway passenger transport service quality set by industry management *** this paper,we summarize the characteristics of real-time dynamic evaluation under the requirements of hierarchical and classified evaluation and analyze the entire process of the one-time travel service of highway passenger *** focus on station waiting and in-vehicle services,extract the elements most concerned by passengers as evaluation indexes,and construct a three-level index ***,a multi-indicator comprehensive evaluation method based on the analytic hierarchy process and fuzzy comprehensive evaluation is selected to construct a comprehensive evaluation *** combining with the development level of electronic ticket purchasing and the requirements of satisfaction evaluation,we propose three data collection methods and compare and analyze their strengths and ***,based on actual survey data,the effectiveness of the model is *** verification results show that the real-time dynamic evaluation index system based on the Internet can better satisfy evaluation requirements.

关键词： traffic planning highway passenger transport service satisfaction dynamic evaluation

A dynamic evaluation technique for assessing gas output from coal seams during commingling production within a coalbed methane well: a case study from the Qinshui Basin

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International Journal of Coal Science & Technology 2020年第1期7卷 122-132页

作者： Chuan Wu Chengxiang Yuan Guojun Wen Lei Han Haojie Liu School of Mechanical and Electronic Information China University of Geosciences(Wuhan)Wuhan 430074China Hubei Intelligent Geological Equipment Engineering Technology Research Center Wuhan 430074China Key Laboratory of Tectonics and Petroleum Resources(China University of Geosciences)Ministry of Education Wuhan 430074China

Gas drainage is carried out based on output from each coal bed throughout commingling production of coalbed methane(CBM).A reasonable drainage process should therefore initially guarantee main coal bed production and then enhance gas output from other *** damage can result if this is not the case,especially with regard to fracture development in the main gas-producing coal bed and can greatly reduce single well *** theoretical models and measuring devices are inapplicable to commingled CBM drainage,however,and so large errors in predictive models cannot always be *** most effective currently available method involves directly measuring gas output from each coal bed as well as determining the dominant gas-producing unit.A dynamic evaluation technique for gas output from each coal bed during commingling CBM production is therefore proposed in this *** technique comprises a downhole measurement system combined with a theoretical calculation *** output parameters(i.e.,gas-phase flow rate,temperature,pressure)are measured in this approach via a downhole measurement system;substituting these parameters into a deduced theoretical calculation model then means that gas output from each seam can be calculated to determine the main gas-producing *** in gas output from a single well or each seam can therefore be *** laboratory and field test results presented here demonstrate that calculation errors in CBM outputs can be controlled within a margin of 15%and therefore conform with field use requirements.

关键词： Commingling production Gas output dynamic evaluation Coalbed methane Qinshui Basin

The dynamic evaluation of Enterprise's Strategy Based on Rough Set Theory

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Journal of Donghua University(English Edition) 2003年第3期20卷 117-121页

作者：刘恒江陈继祥 School of Management Shanghai Jiaotong UniversityShanghai200030

This paper presents dynamic evaluation of enterprise's strategy which is suitable for dealing with the complex and dynamic problems of strategic evaluation. Rough Set Theory is a powerful mathematical tool to handle vagueness and uncertainty of dynamic evaluation. By the application of Rough Set Theory, this paper computes the significance and weights of each evaluation criterion and helps to lay evaluation emphasis on the main and effective criteria. From the reduced decision table,evaluators can get decision rules Which direct them to give judgment or suggestion of strategy. The whole evaluation process is decided by data, so the results are certain and reasonable.

关键词： Rough Set enterprise's strategy dynamic evaluation

A dynamic evaluation MODEL OF MINERAL RESOURCE PROPERTY

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Journal of Coal Science & Engineering(China) 2000年第2期6卷 87-91页

作者：芮建伟冯志亮 ChinaUniversityofMining＆Technology Beijing100083 ZhengzhouCoalGeologyInstitute.Zhengzhou450053

Based on the value theory of mineral resource, a dynamic evaluation model of mineral resource property is erected, which not only takes the factors of extractions into consideration but also those of explorations. The solution process of the model is described and the differential solution is presented. Then the paper comes to the conclusion that the differential solution is also the optimal depletion path of the resource.

关键词： Hotelling Rule mineral resource property value dynamic evaluation

Tourism Destination Eco-Security and its dynamic evaluation Method

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Tourism Destination Eco-Security and its Dynamic Evaluation ...

Assessment and Enhancement of FRC of Power Systems Considering Thermal Power dynamic Conditions

2006（沈阳）国际安全科学与技术学术研讨会

作者： YANG Zhuquan, TANG Shilu Institute of Land Reclamation and Ecology Restoration, China University of Mining and Technology, Beijing 100083, China College of Tourism, Guilin University of Technology, Guilin 541004, China

＜正＞Ecological security of tourism destination is an important factor for the sustainable development of tourism industry. Currently , various ecological problems seriously threaten many tourism destinations. A complete understanding of eco - security situation is the foundation of maintaining sustainable development for tourism destination. However, the study of tourism destination eco - security is still in its initial stage, basing on the references at home and abroad, the connotation and dynamic characteristics of tourism destination eco - security were discussed. Then, the research of the evaluation method of tourism destination eco - security are carried out, and the standard system, evaluation mode, trend analyze mode, and the dynamic evaluation method of tourism destination eco - safety which is based on the situation evaluation and trend analyze, are put forwds.

关键词： tourism destination eco - security P - S - R mode dynamic evaluation

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1371-1383页

作者： Feng Hong Yalei Pang Weiming Ji Lu Liang Fang Fang Junhong Hao Jizhen Liu State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources and School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China

Frequency stability and security have been a vital challenge as large-scale renewable energy is integrated into power *** contrast,the proportion of traditional thermal power units decreases during the decarbonization transformation process,resulting in poor frequency *** paper aims to explore the potential of frequency regulation support,dynamic assessment,and capacity promotion of thermal power plants in the transition *** the dynamic characteristics of the main steam working fluid under different working conditions,a nonlinear observer is constructed by extracting the main steam pressure and valve opening degree *** real-time frequency modulation capacity of thermal power units can provide a dynamic state for the power grid.A dynamic adaptive modification for primary frequency control(PFC)of power systems,including wind power and thermal power,is proposed and *** power dynamic allocation factor is adaptively optimized by predicting the speed droop ratio,and the frequency modulation capability of the system is improved by more than 11%under extreme ***,through the Monte Carlo simulation of unit states of the system under various working conditions,the promotion of the frequency regulation capacity with high wind power penetration(WPP)is verified.

关键词： dynamic evaluation frequency regulation power system predictive modeling wind penetration

dynamic Pricing Model of E-Commerce Platforms Based on Deep Reinforcement Learning

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Computer Modeling in Engineering & Sciences 2021年第4期127卷 291-307页

作者： Chunli Yin Jinglong Han College of Economics and Administration Tonghua Normal UniversityJilin130000China Department of Administration Section Tonghua Normal UniversityJilin130000China

With the continuous development of artificial intelligence technology,its application field has gradually *** further apply the deep reinforcement learning technology to the field of dynamic pricing,we build an intelligent dynamic pricing system,introduce the reinforcement learning technology related to dynamic pricing,and introduce existing research on the number of suppliers(single supplier and multiple suppliers),environmental models,and selection algorithms.A two-period dynamic pricing game model is designed to assess the optimal pricing strategy for e-commerce platforms under two market conditions and two consumer participation *** first step is to analyze the pricing strategies of e-commerce platforms in mature markets,analyze the optimal pricing and profits of various enterprises under different strategy combinations,compare different market equilibriums and solve the Nash ***,assuming that all consumers are naive in the market,the pricing strategy of the duopoly e-commerce platform in emerging markets is *** comparing and analyzing the optimal pricing and total profit of each enterprise under different strategy combinations,the subgame refined Nash equilibrium is ***,assuming that the market includes all experienced consumers,the pricing strategy of the duopoly e-commerce platform in emerging markets is analyzed.

关键词： Deep reinforcement learning e-commerce platform dynamic evaluation game model pricing strategy