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投入固定视角下的中国城市节能减排分析

系统工程学报 2024年第3期39卷 469-480页

作者：李果孙加森王兆华北京理工大学管理学院北京100081 数字经济与政策智能工业和信息化部重点实验室北京100081 北京理工大学经济学院北京100081 苏州大学商学院江苏苏州215012

基于最小调整策略的固定投入和DEA模型得到均衡前沿面,提出了节能减排绩效测量模型和综合效率测量模型,对中国城市节能减排效率开展了研究.结果表明,在考虑土地利用的情况下,中国城市的节能减排效率显著降低;中国城市土地供不应求问题... 详细信息

基于最小调整策略的固定投入和DEA模型得到均衡前沿面,提出了节能减排绩效测量模型和综合效率测量模型,对中国城市节能减排效率开展了研究.结果表明,在考虑土地利用的情况下,中国城市的节能减排效率显著降低;中国城市土地供不应求问题逐步得到改善,但土地供需缺口依然较大;五线城市的土地利用效率不高,但是节能减排效率却呈逐年递增;85%的样本城市没能实现土地利用和节能减排的双赢.研究结果为政府在宏观和中观层面制定城市经济可持续发展政策提供了一定的理论和现实依据.

关键词：均衡前沿面节能减排综合效率土地利用率

A RANKING METHOD FOR DMUS WITH INTERVAL DATA BASED ON DEA CROSS-EFFICIENCY EVALUATION AND TOPSIS

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Journal of Systems Science and Systems Engineering 2013年第2期22卷 191-201页

作者： Jie WU jiasen sun Malin SONG Liang LIANG School of Management University of Science & Technology of China

The traditional data envelopment analysis （DEA） model can evaluate the relative efficiencies of a set of decision making units （DMUs） with exact values of inputs and outputs, but it cannot handle imprecise data. Imprecise data, for example, can be expressed in the form of the interval data or mixtures of interval data and ordinal data. In this study, a cross-efficiency method is introduced into the DEA model to calculate the interval of cross-efficiency values, based on which a new TOPSIS method is proposed to rank the DMUs. Two examples are presented to illustrate and validate the proposed method.

关键词： Data envelopment analysis (DEA) cross-efficiency TOPSIS

Ranking approach of cross-efficiency based on improved TOPSIS technique

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Journal of Systems Engineering and Electronics 2011年第4期22卷 604-608页

作者： Jie Wu jiasen sun Yong Zha Liang Liang School of Management University of Science and Technology of China Hefei 230026 R R. China

The cross-efficiency evaluation method is reviewed which is developed as a data envelopment analysis （DEA） extensive tool. The cross-efficiency evaluation method is utilized to identify the decision making unit （DMU） with the best practice and to rank the DMUs by their respective cross-efficiency scores. The main drawbacks of the cross-efficiency evaluation method when the ultimate average cross-efficiency scores are used to evalu- ate and rank the DMUs are also pointed out. With the research gap, an improved technique for order preference by similarity to ideal solution （TOPSIS） is introduced to rank the crossfficiency by eliminating the average assumption. Finally, an empirical example is illustrated to examine the validity of the proposed method.

关键词： data envelopment analysis (DEA) cross-efficiency,improved technique for order preference by similarity to ideal solu-tion (TOPSIS) decision making unit (DMU).

Methods and applications of DEA cross-efficiency:Review and future perspectives

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Frontiers of Engineering Management 2021年第2期8卷 199-211页

作者： Jie WU jiasen sun Liang LIANG School of Management University of Science and Technology of ChinaHefei 230026China Business School Soochow UniversitySuzhou 215012China College of Economics and Management Nanjing University of Aeronautics and AstronauticsNanjing 211106China School of Management Hefei University of TechnologyHefei 230009China

The field of engineering management usually involves evaluation issues,such as program selection,team performance evaluation,technology selection,and supplier *** traditional self-evaluation data envelopment analysis(DEA)method usually exaggerates the effects of several inputs or outputs of the evaluated decision-making unit(DMU),resulting in unrealistic *** address this problem,scholars have proposed the cross-efficiency evaluation(CREE)*** with the DEA method,CREE can rank DMUs more completely by using reasonable *** the extensive application of this technique,several problems,such as non-unique weights and non-Pareto optimal results,have arisen in CREE ***,the improvement of CREE has attracted the attention of many *** paper reviews the theory and applications of CREE,including the non-uniqueness problem,the aggregation of cross-efficiency data,and applications in engineering *** also discusses the directions for future research on CREE.

关键词： cross-efficiency evaluation efficiency secondary goal model aggregation review

想象·“仿真”·互动:“超真实”语境下的数字电影影像

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当代动画 2021年第3期 86-90页

作者：孙佳森北京电影学院摄影系

本文借助法国后现代思想家让·鲍德里亚的"超真实"理论,以现代数字电影文本为例,探讨其在虚拟制作技术下的"超真实"表现。本文认为,数字技术下的电影影像具有想象力超越现实、数字"仿真"以及虚拟与真实形成互动等特性。"超真实"理论为... 详细信息

本文借助法国后现代思想家让·鲍德里亚的"超真实"理论,以现代数字电影文本为例,探讨其在虚拟制作技术下的"超真实"表现。本文认为,数字技术下的电影影像具有想象力超越现实、数字"仿真"以及虚拟与真实形成互动等特性。"超真实"理论为我们理解当下数字电影影像提供了有力的理论视角。然而,我们需认识到:在电影中,技术与艺术的共生互动才是电影影像生命力的根本;我们既需要警惕"唯技术论",又不能陷入"技术悲观主义"的泥潭。

关键词：电影影像数字虚拟技术 “仿真” 超真实

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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Science China Earth Sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge SU He sun State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKS),Syr Darya(USRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKS,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(USRD and UAMD),and the combined influence of precipitation and temperature(UAKS and UI).Since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

New perspectives on deep carbon cycling

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Science China Earth Sciences 2024年第8期67卷 2411-2422页

作者： Weidong sun Center of Deep Sea Research Key Laboratory of Ocean Observation and ForecastingInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laoshan Laboratory Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

The proto-atmosphere serves as a crucial starting point for the carbon *** based on atmospheric data from Mars and Venus suggest that Earth's proto-atmosphere contained>110 bar of CO_(2)and>2.6 bar of *** protoatmosphere had over 1000 bar of water vapor during the magma ocean stage,assuming the proto-ocean had a volume of two oceans of *** this stage both water and carbon dioxide were in a supercritical state at the magma-atmosphere *** serpentinization reactions occurred due to rock-water interaction,producing abundant ***,nitrogen is reduced to ammonia,and carbon dioxide to methane,forming carbonate *** proto-atmosphere dominated by methane,ammonia,and hydrogen formed a significant amount of amino acids through *** process is essential not only to the origin of life,but also to the early carbon-nitrogen cycle on *** the Hadean eon,a large amount of CO_(2)was sequestered as carbonate and organic ***,it mainly entered the deep mantle through mantle overturn or *** the mantle transition zone,carbonate undergoes“Redox freezing”,where carbonate is reduced to diamond through oxidation of ferrous iron in the *** the lower mantle,Fe^(2+)undergoes disproportionation reactions,forming Fe^(3+)and metallic *** these,Fe^(3+)mainly resides in bridgmanite,thereby increasing the oxygen fugacity of the lower mantle,while metallic iron falls to the Earth's *** distribution of carbon in the mantle is crucial for deep carbon *** density curves of diamond and mantle peridotite melt intersect at the bottom of the mantle transition zone(about 660 km).This density crossover leads to the accumulation of diamond during the magma ocean *** materials such as subducting slabs enter the lower mantle,compensatory upwelling of lower mantle material *** enters the upper mantle,decomposes,releasing Fe^(3+)ions and oxidizes diamond

关键词： Carbon cycling Proto-atmosphere Amino acids Subduction initiation Passive margin subduction Atmospheric carbon dioxide

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分散型农村生活污水处理技术分析

皮革制作与环保科技 2022年第15期3卷 144-145,148页

作者：孙家森日照市生态环境局高新区分局山东日照276800

第七次全国人口普查调查结果显示,我国总人口数为141178万人,居住在乡村的人口数量约为50979万人,占总人口数的36.11%。为了推动城乡一体化进程,提升农村人口的居住水平,加强农村地区生态文明建设成为了一项极为必要的工作。污水作为农... 详细信息

第七次全国人口普查调查结果显示,我国总人口数为141178万人,居住在乡村的人口数量约为50979万人,占总人口数的36.11%。为了推动城乡一体化进程,提升农村人口的居住水平,加强农村地区生态文明建设成为了一项极为必要的工作。污水作为农村地区的重要污染源,给当地生态文明建设工作造成了严重的阻碍。本文介绍了当前分散型生活污水处理的必要性、处理原则与具体的处理方法,以期在当前的农村污染治理中,通过应用合适的生活污水处理技术,在保证农村环境安全的同时,为新农村建设提供有效的支持。

关键词：分散型农村生活污水污水处理技术生物转盘

Fossil Equidae in the Linxia Basin with Biostratigraphic and Paleozoogeographic Significance

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 1-9页

作者： sun Boyang Key Laboratory of Vertebrate Evolution and Human Origins of the Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China

The Linxia Basin is characterized by an abundance of Cenozoic sediments,that contain exceptionally rich fossil *** are abundant in the Linxia Basin,the fossil record of equids in this region including 16 species that represent 10 *** comparison to other classic late Cenozoic areas in China,the Linxia Basin stands out,because the fauna and chronological data accompanying Linxia equids render them remarkably useful for *** anchitheriines in the region,such as Anchitherium and Sinohippus,represent early equids that appeared in the late stages of the middle and late Miocene,*** the equines,most species of Chinese hipparions have been identified in the Linxia Basin and some species of the genera Hipparion and Hippotherium have FAD records for ***,Equus eisenmannae is one of the earliest known species of Equus in the Old World and is well-represented at the Longdan *** species with precise geohistorical distributions can serve as standards for high-resolution chronological units within this *** at the eastern margin of the Tibetan Plateau and subject to considerable uplift,the Linxia Basin has served as a biogeographic transition area for equids throughout the late Cenozoic.

关键词： Equidae Cenozoic biostratigraphy paleozoogeography Linxia Basin