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Spatiotemporal Evolution and Linkage Analysis of Mutton Price in Xinjiang

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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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河南焦作聂村遗址商周墓地发掘简报

中原文物 2024年第1期 4-11页

作者：冯春艳刘焕龙(文/摄影) 赵志强孟浩(绘图) 张丽芳(绘图) 河南省文物考古研究院河南郑州450002 焦作市文物考古研究所河南焦作454002

2014年2月至6月,焦作市文物考古研究所对聂村遗址进行了考古发掘。本文仅就其中二里岗文化、殷墟文化、西周三个时期的墓葬材料进行介绍。本次发掘清理此时期墓葬44座,其中二里岗文化时期墓葬2座、殷墟文化时期墓葬40座、西周时期墓葬2... 详细信息

2014年2月至6月,焦作市文物考古研究所对聂村遗址进行了考古发掘。本文仅就其中二里岗文化、殷墟文化、西周三个时期的墓葬材料进行介绍。本次发掘清理此时期墓葬44座,其中二里岗文化时期墓葬2座、殷墟文化时期墓葬40座、西周时期墓葬2座,尤以晚商殷墟文化墓葬数量最多,排列整齐集中,为焦作地区首次发现。对于完善豫北地区文化序列、与周边文化关系、聚落与社会等课题具有重要的学术价值。

关键词：聂村晚商墓葬

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Recycled graphite for more sustainable lithium-ion batteries

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Carbon Energy 2024年第5期6卷 15-24页

作者： Mayokun Olutogun Anna Vanderbruggen Christoph Frey Martin Rudolph Dominic Bresser Stefano Passerini Helmholtz institute Ulm(HIU) Ulm Germany Karlsruhe institute of technology(KIT) KarlsruheGermany Helmholtz Zentrum Dresden-Rossendorf(HZDR) Helmholtz Institute Freiberg for Resource Technology(HIF)FreibergGermany ProGraphite GmbH UntergriesbachGermany Chemistry Department Sapienza University of RomeRomeItaly

The demand for lithium-ion batteries(LIBs)is driven largely by their use in electric vehicles,which is projected to increase dramatically in the future.This great success,however,urgently calls for the efficient recycling of LIBs at the end of their life.Herein,we describe a froth flotation-based process to recycle graphite—the predominant active material for the negative electrode—from spent LIBs and investigate its reuse in newly assembled LIBs.It has been found that the structure and morphology of the recycled graphite are essentially unchanged compared to pristine commercial anode-grade graphite,and despite some minor impurities from the recycling process,the recycled graphite provides a remarkable reversible specific capacity of more than 350 mAh g^(−1).Even more importantly,newly assembled graphite‖NMC532 cells show excellent cycling stability with a capacity retention of 80%after 1000 cycles,that is,comparable to the performance of reference full cells comprising pristine commercial graphite.

关键词： anode graphite lithium-ion battery recycling sustainability

Distributed Optimization and Scaling Design for Solving Sylvester Equations

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Journal of Systems Science & Complexity 2024年

作者： CHENG Songsong YU Xin ZENG Xianlin LIANG Shu HONG Yiguang 1.Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment, School of Electrical Engineering and Automation, Anhui University 2.Key Laboratory of Intelligent Control and Decision of Complex Systems, School of Automation, Beijing institute of technology 3.Department of Control Science and Engineering, Tongji University 4.Shanghai Research institute for Intelligent Autonomous Systems, Tongji University

This paper develops distributed algorithms for solving Sylvester equations. The authors transform solving Sylvester equations into a distributed optimization problem, unifying all eight standard distributed matrix structures. Then the authors propose a distributed algorithm to find the least squares solution and achieve an explicit linear convergence rate. These results are obtained by carefully choosing the step-size of the algorithm, which requires particular information of data and Laplacian matrices. To avoid these centralized quantities, the authors further develop a distributed scaling technique by using local information only. As a result, the proposed distributed algorithm along with the distributed scaling design yields a universal method for solving Sylvester equations over a multi-agent network with the constant step-size freely chosen from configurable intervals. Finally, the authors provide three examples to illustrate the effectiveness of the proposed algorithms.

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Inflation Transmission Diagnostics via a Bayesian Graph Vector Autoregressive Model with Markov Switching

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Journal of Systems Science & Complexity 2024年

作者： FU Jiali CAI Fengjing WU Jinran ZHAO Shangrui WANG You-Gan 1.College of Mathematics and Physics, Wenzhou University 2.institute for Positive Psychology and Education, Australian Catholic University 3.School of Science, Wuhan University of technology 4.School of Mathematics and Physics, The University of Queensland College of Mathematics and Physics Wenzhou University institute for Positive Psychology and Education Australian Catholic University School of Science Wuhan University of Technology School of Mathematics and Physics The University of Queensland

The transmission of inflation is a widespread occurrence, and managing inflationary pressures is a crucial macroeconomic challenge. Although inflation is a typical macroeconomic variable,its contemporaneous and lagged causal relationships have not been thoroughly investigated, which could result in missing important policy insights. The Bayesian graph vector autoregression(BGVAR)model can identify contemporaneous and lagged causal relationships among economic variables, but it lacks practical research on inflationary inflation. To account for the structural transformation in the inflation transmission process, the authors propose a Bayesian graph vector autoregressive model with Markov switching(MS-BGVAR), which considers both regime switching and contemporaneous causality among macroeconomic variables. The proposed study focuses on analyzing the dynamics of inflation transmission relationships among G7 countries under different regimes, as these countries represent developed nations. The authors use inflation data from 1971–2019, which shows two distinct inflation regimes within the sample period. The authors conduct simulation experiments to generate moderately dimensional simulated data for both regimes and indicators, demonstrating the theoretical reliability of the proposed model in accurately identifying graph structures. Finally, the authors apply the proposed model to identify structural breaks and causal transmission relationships in the inflation transmission process of G7 economies, demonstrating that the proposed model has significant economic significance and good explanatory power in the selected target countries.

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调控动态生长过程以构筑嵌段可换和光谱可调的有机异质结构（英文）

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Science China Materials 2024年

作者：赵帅许超飞余悦夏星宇王磊王雪东廖良生 1.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, institute of Functional Nano & Soft Materials (FUNSOM), Soochow University 2.Macao institute of Materials Science and Engineering, Macau University of Science and technology Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Macao institute of Materials Science and Engineering Macau University of Science and Technology

与单一结构相比,有机嵌段异质结构具有特殊的光电性能.然而,有机分子间的相互作用主导了异质结构构建单元的生长顺序,如有机单元A、B会自发形成BAB型结构而不是相反的ABA型结构,不能可控生长.在此,我们提出了次序结晶工程,结合晶种逐步...

与单一结构相比,有机嵌段异质结构具有特殊的光电性能.然而,有机分子间的相互作用主导了异质结构构建单元的生长顺序,如有机单元A、B会自发形成BAB型结构而不是相反的ABA型结构,不能可控生长.在此,我们提出了次序结晶工程,结合晶种逐步自组装,控制共晶R与共晶N在彼此的两端纵向外延生长,从而精确合成具有可逆嵌段构型的有机嵌段异质结构:RNR和NRN. RNR有机嵌段异质结构,由于其逐渐掺杂的异质结而表现出渐变色的发射和波导特性,而NRN有机嵌段异质结构由于其明显的构筑异质结界限而表现出纯双色发射和波导特性.本工作实现了有机嵌段异质结构中嵌段块的有序可控生长,为未来光子学发展提供了制备合理复杂有机嵌段异质结构的途径.

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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 algorithms.To 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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2022年苹果产业发展概况(二)——苹果期货、标准与品牌建设

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中国果菜 2024年第4期44卷 1-4,8页

作者： China Apple Industry Association National Apple Industry technology System Jinan Fruit Research institute,All China Federation of Supply & Marketing Cooperatives Zhengzhou Commodity Exchange 中国苹果产业协会国家苹果产业技术体系中华全国供销合作总社济南果品研究所郑州商品交易所

1苹果期货交易情况1.1苹果期货交割机构根据郑州商品交易所官网消息,苹果期货现有交割仓库1家(陕西),交割厂库19家(陕西9家、山东6家、甘肃3家、河南1家),车船板交割服务机构18家(陕西8家、山东7家、甘肃3家)。苹果交割仓库、厂库及车... 详细信息

1苹果期货交易情况1.1苹果期货交割机构根据郑州商品交易所官网消息,苹果期货现有交割仓库1家(陕西),交割厂库19家(陕西9家、山东6家、甘肃3家、河南1家),车船板交割服务机构18家(陕西8家、山东7家、甘肃3家)。苹果交割仓库、厂库及车船板交割服务机构分布在陕西、山东、甘肃及河南等省。1.2苹果期现货运行情况2022年,苹果期货价格整体呈现先扬后抑的走势,主要分为三个阶段。

关键词：期货交易期货价格苹果交割

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THE ESTABLISHMENT OF SAFETY INFORMATION SYSTEM

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THE ESTABLISHMENT OF SAFETY INFORMATION SYSTEM