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Spatiotemporal Evolution and Linkage Analysis of Mutton Price in Xinjiang

Journal of Systems Science and Information 2024年

作者： Yulin YANG Jian XU Lean YU 1.school of Economics and management, University of Chinese Academy of Sciences 2.Business school, Sichuan University 3.school of Business, Shenzhen Institute of Technology school of Economics and management University of Chinese Academy of Sciences Business school Sichuan University school of Business Shenzhen Institute of Technology

The mutton industry plays a pivotal role in the animal husbandry industry of Xinjiang Uygur Autonomous Region. To better monitor the volatility movement and risk warning of mutton price, the fluctuation characteristics of mutton prices and the future trend of prices are analyzed systematically. On the one hand, the Hodrick Prescott(HP) filter method is used to analyze the longterm trends and cyclical characteristics of mutton prices in Xinjiang and explored the spatial evolution characteristics of mutton price fluctuations in various regions of Xinjiang. On the other hand, the Threshold Auto-Regressive(TAR) model is used to analyze the linkage relationship between mutton prices and the prices of other livestock products. The empirical results show that(1) the overall volatility of mutton price in Xinjiang is high, showing a trend of rising first, then falling and then rising from the temporal perspective.(2) At the regional level, the price in the south is higher than that of the north, showing a decreasing trend from south to north on the whole from the spatial viewpoint.(3) From the linkage relationship perspective, mutton and beef are complementary in the short term,but they are substitutes each other in the long term. This paper explores the characteristics of mutton price fluctuations in Xinjiang from the single time series of mutton prices and the linkage with other livestock products, which provides a reliable basis for the monitoring and risk warning of mutton price fluctuation.

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Security management and Forewarning on engineering Based on Failure Science

Security Management and Forewarning on Engineering Based on ...

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2004安全科学与技术国际会议

作者： WANG Yuesen1 2 (1 school of management engineering Tianjin University Tianjin 300072 China) (2 Department of Economic management Shijiazhuang Railway Institute Shijiazhuang 050043 Hebei China)

Failure science is a new branch in management idea. Because the deep pit project failure is normally in practice and the soil is more complex than the upper structure, the failure science is suitable

关键词： failure science deep pit project security management Failure Cause Tree Analyzing

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Application of FCM Clustering Based Rough Sets on Steel Rolling Process

Application of FCM Clustering Based Rough Sets on Steel Roll...

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2010 Chinese Control and Decision Conference

作者： Li Wang~(1,2),Xianzhong Zhou~1,Guangming Zhang~2 1.school of engineering and management,Nanjing University,Nanjing 210093,China 2.school of Automation and Electrical engineering,Nanjing University of Technology,Nanjing 210009,China

＜正＞This paper presents a model for predicting steel mechanical property based on rough sets and fuzzy c means *** sets is an intelligent method,which can only be applied to data table with discrete *** the practical data set is normally continuous,and rough sets cannot be used *** clustering is used to transform the continuous attributes to discretized ones and a discretized decision table can be *** sets reduce the discretized decision table to discover significant attributes of a data set and filter out those attributes which are ***, to verify the validity of the proposed method,it is used for practical data acquired from some steel works,and the simulation results show that the attribute reduction contains the same information as the original one.

关键词： Rough Sets Fuzzy C-means Clustering Discretization Attribute Reduction Steel Rolling Process

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Hierarchically Distributed Optimization with a Flexible and Complexity-Reducing Algorithm

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Journal of Systems Science & Complexity 2024年

作者： LIANG Shu ZHANG Lei WEI Yiheng LIU Yemo 1.Department of Control Science and engineering, Tongji University 2.Shanghai Research Institute for Intelligent Autonomous Systems 3.school of Mathematics, Southeast University 4.Beijing Aerospace Automatic Control Institute Department of Control Science and engineering Tongji University Shanghai Research Institute for Intelligent Autonomous Systems school of Mathematics Southeast University Beijing Aerospace Automatic Control Institute

In this paper, the authors consider distributed convex optimization over hierarchical networks. The authors exploit the hierarchical architecture to design specialized distributed algorithms so that the complexity can be reduced compared with that of non-hierarchically distributed *** this end, the authors use local agents to process local functions in the same manner as other distributed algorithms that take advantage of multiple agents' computing resources. Moreover, the authors use pseudocenters to directly integrate lower-level agents' computation results in each iteration step and then share the outcomes through the higher-level network formed by pseudocenters. The authors prove that the complexity of the proposed algorithm exponentially decreases with respect to the total number of pseudocenters. To support the proposed decomposition-composition method for agents and pseudocenters, the authors develop a class of operators. These operators are generalizations of the widely-used subgradient based operator and the proximal operator and can be used in distributed convex optimization. Additionally, these operators are closed with respect to the addition and composition operations; thus, they are suitable to guide hierarchically distributed design and analysis. Furthermore,these operators make the algorithm flexible since agents with different local functions can adopt suitable operators to simplify their calculations. Finally, numerical examples also illustrate the effectiveness of the method.

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投资项目选择的风险评价AHP模型及其应用

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数学的实践与认识 2004年第4期34卷 23-29页

作者：陈学中李文喜李光红南京大学工程管理学院江苏南京210093 济南大学管理学院山东济南250022

论述了投资项目选择问题的重要性 ,对常用的投资项目选择方法进行了综述分析 ,探讨了投资项目选择的风险评价指标体系和层次分析法的基本原理 ,提出了投资项目选择的风险评价层次分析模型 ,并以实例说明了如何将层次分析法应用于投资项... 详细信息

论述了投资项目选择问题的重要性 ,对常用的投资项目选择方法进行了综述分析 ,探讨了投资项目选择的风险评价指标体系和层次分析法的基本原理 ,提出了投资项目选择的风险评价层次分析模型 ,并以实例说明了如何将层次分析法应用于投资项目选择的风险评价问题 .

关键词：风险评价投资项目选择 AHP模型层次分析

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基于应急物流体的应急救援物资调度模型

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系统仿真学报 2009年第18期21卷 5828-5830,5835页

作者：韩景倜池为叠韩小妹上海财经大学信息管理与工程学院上海200433 空军工程大学工程学院西安710038

应急物流体理论(ELS3)是解决应急突发事件的宏观方法,以该理论基本原则为依据,从技术实施与应用角度研究应急救援物资的调度问题,以时间性,经济性和可靠性为优化目标,建立了多目标决策模型,并给出求解算法。为提高应急响应能力、缩短救... 详细信息

应急物流体理论(ELS3)是解决应急突发事件的宏观方法,以该理论基本原则为依据,从技术实施与应用角度研究应急救援物资的调度问题,以时间性,经济性和可靠性为优化目标,建立了多目标决策模型,并给出求解算法。为提高应急响应能力、缩短救援时间、减少损失提供一种实用的方法。

关键词：应急物流体应急限制期应急供应点多目标决策

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农村公路建设中的土地资源保护对策研究

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山西交通科技 2008年第4期 4-6页

作者：刘燕马春燕刘剑峰重庆交通大学管理学院重庆400074 重庆市巴南区交通局重庆401320

土地资源的保护对我国社会的可持续发展具有重大的现实意义和深远的战略影响。在加快农村公路建设的同时,要着重解决好建设与土地资源保护的矛盾,使农村公路建设走上可持续发展之路。在分析当今农村公路建设用地存在的问题基础上,提出... 详细信息

土地资源的保护对我国社会的可持续发展具有重大的现实意义和深远的战略影响。在加快农村公路建设的同时,要着重解决好建设与土地资源保护的矛盾,使农村公路建设走上可持续发展之路。在分析当今农村公路建设用地存在的问题基础上,提出应从政策和技术层面对土地资源进行有效控制,并强调农村公路建设各阶段对土地资源使用有着不同的影响,应在农村公路建设的规划、设计、施工阶段进行全过程控制,并提出了具体的控制对策。

关键词：农村公路用地资源规划设计对策

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Chinese Guidelines for the Diagnosis and management of Atrial Fibrillation

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Journal of Geriatric Cardiology 2024年第3期21卷 251-314页

作者： Chang-Sheng MA Shu-Lin WU Shao-Wen LIU Ya-Ling HAN Chinese Society of Cardiology Chinese Medical Association Heart Rhythm Committee of Chinese Society of Biomedical engineering Beijing Anzhen Hospital Capital Medical University Guandong Provincial People’s Hospital Shanghai First People’s Hospital General Hospital of Northern Theater Command 不详

Atrial fibrillation(AF)is the most common sustained cardiac arrhythmia,significantly impacting patients’quality of life and increasing the risk of death,stroke,heart failure,and *** the past two decades,there have been significant breakthroughs in AF risk prediction and screening,stroke prevention,rhythm control,catheter ablation,and integrated *** this period,the scale,quality,and experience of AF management in China have greatly improved,providing a solid foundation for the development of guidelines for the diagnosis and management of *** further promote standardized AF management,and apply new technologies and concepts to clinical practice in a timely and comprehensive manner,the Chinese Society of Cardiology of the Chinese Medical Association and the Heart Rhythm Committee of the Chinese Society of Biomedical engineering have jointly developed the Chinese Guidelines for the Diagnosis and management of Atrial *** guidelines have comprehensively elaborated on various aspects of AF management and proposed the CHA2DS2-VASc-60 stroke risk score based on the characteristics of AF in the Asian *** guidelines have also reevaluated the clinical application of AF screening,emphasized the significance of early rhythm control,and highlighted the central role of catheter ablation in rhythm control.

关键词： prevention sustained diagnosis

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Progress of Lyman-alpha-based beam emission spectroscopy(Ly BES)diagnostic on the HL-2A tokamak

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Plasma Science and Technology 2024年第3期26卷 118-125页

作者：周艺轩余羿许敏柯锐聂林徐皓赵光义刘灏袁子豪肖晨雨李继全肖池阶 the HL-2A Team Southwestern Institute of Physics Chengdu 610041People's Republic of China Sino-French Institute of Nuclear engineering and Technology Sun Yat-sen UniversityZhuhai 519082People's Republic of China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871People's Republic of China

An edge Lyman-alpha-based beam emission spectroscopy(LyBES)diagnostic,using a heating NBI(neutral beam injection)system,is currently under development on the HL-2A *** 20-channel edge LyBES,which is intended to measure the density fluctuation in plasma edge(from R=1960 mm to R=2026 mm)with an improved spatial resolution of 3.3 mm,is a complement to the existing conventional beam emission spectroscopy(BES)*** this article,we introduce the progress of LyBES diagnostic,including the collection optics,the monochromator,and the detector *** reflectance of the collection mirrors is measured to be~82%at 122 nm,and the aberration geometrical radius of the collection optics is tested to be~150μm in the aimed *** linear dispersion of the LyBES monochromator is designed to be~0.09 nm mm^(-1).The bandwidth of the detector system with the 5×10^(7)V A^(-1)preamplifier gain is measured to be~280 kHz,and the peak-to-peak noise of the detector system is tested to be~16 *** finalized design,components development and testing of the LyBES diagnostic have been completed at present,and an overall performance of the LyBES diagnostic is to be confirmed in the next HL-2A campaign.

关键词： density fluctuation Ly BES BES vacuum ultraviolet

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ORDERED WEIGHTED DISTANCE MEASURE

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Journal of Systems Science and Systems engineering 2008年第4期17卷 432-445页

作者： Zeshui XU~1 Jian CHEN~2 1 school of Economics and management,Southeast University,Nanjing,Jiangsu 210096,China 2 school of Economics and management,Tsinghua University,Beijing,100084,China school of Economics and management Southeast University Nanjing Jiangsu China school of Economics and management Tsinghua University Beijing China

The aim of this paper is to develop an ordered weighted distance(OWD) measure,which is the generalization of some widely used distance measures,including the normalized Hamming distance, the normalized Euclidean distance,the normalized geometric distance,the max distance,the median distance and the min distance,***,the ordered weighted averaging operator,the generalized ordered weighted aggregation operator,the ordered weighted geometric operator,the averaging operator,the geometric mean operator,the ordered weighted square root operator,the square root operator,the max operator,the median operator and the min operator are also the special cases of the OWD *** methods depending on the input arguments are given to determine the weights associated with the OWD *** prominent characteristic of the OWD measure is that it can relieve(or intensify) the influence of unduly large or unduly small deviations on the aggregation results by assigning them low(or high) *** desirable characteristic makes the OWD measure very suitable to be used in many actual fields,including group decision making,medical diagnosis, data mining,and pattern recognition,***,based on the OWD measure,we develop a group decision making approach,and illustrate it with a numerical example.

关键词： Group decision making ordered weighted distance(OWD) measure aggregation operator

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