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Combination of drainage, water supply and environmental protection as well as rational distribution of water resource in Zhengzhou mining district

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Science china Earth Sciences 2005年第10期48卷 1768-1779页

作者： WU Qiang1, LI Duo1,2, DI Zhiqiang3. MIAO Ying3. ZHAO Suqi4.& GUO Qiwen5 1. Resource Exploitation Engineering College, CUMT, Beijing 100083. china 2. Shijiazhuang Engineering College, {4. of economics, Shijiazhuang 05003., china 3. Shenyang Institute of Geology and Mineral Resources, Shenyang 11003., china 4. State Adminstration of Coal Mine Safety, Beijing 100013. china 5. Zhengzhou Coal Mine Company (Group), Zhengzhou 4.23.1, china Resource Exploitation Engineering College CUMT university of economics Shenyang Institute of Geology and Mineral Resources State Adminstration of Coal Mine Safety Zhengzhou Coal Mine Company (Group)

The geological condition of coalfield is much complex in china. With increasing in mining depth and drainage amount, the contradiction of drainage, water supply and environ-mental protection is becoming more and more serious. However, the contradiction can be solved by the scientific management of optimizing combination of drainage, water supply and environ-mental protection. The Philip multiple objectives simplex method used in this article has searched for a possible solution at the first step, and then it goes on searching to find out whether there is a weight number that can lead the solution to the biggest. It can reduce the randomness and diffi-culty of traditional weight method which determine the weight number artificially. Some beneficial coefficients are vague and the number is larger in the model of water resource dispatch. So the vague layer analysis method can consider these vague factors fully, combining the qualitative and quantitative analysis together. Especially, this method can quantify the experiential judge-ment of policy decider, and it will turn to be more suitable if the structure of objective factors is complex or the necessary data are absent. In the paper, the two methods above are used to solve the plans of drainage, water supply and optimizing distribution of water resource in the Zhengzhou mining district.

关键词： combination of drainage, water supply and environmental protection, Philip multiple objective simplex method, vague layer analysis method, distribution of water resource.

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分子筛骨架铝原子分布研究进展

石油炼制与化工 2024年第2期55卷 36-42页

作者：吴一鹏段绘州任朝秀侯春生吴韬北京石油化工学院新材料与化工学院恩泽生物质精细化工北京市重点实验室北京102617 首都医科大学中国石油塔里木油田塔中采油气管理区

分子筛由于具有大量可调变的酸性位点以及良好的择形性和水热稳定性等优点而被广泛应用于石油化工领域的酸催化反应。分子筛骨架铝原子的位置决定了其酸位点的分布,因而骨架铝原子的分布(包括所处的空腔体积、化学环境以及两个铝原子的... 详细信息

分子筛由于具有大量可调变的酸性位点以及良好的择形性和水热稳定性等优点而被广泛应用于石油化工领域的酸催化反应。分子筛骨架铝原子的位置决定了其酸位点的分布,因而骨架铝原子的分布(包括所处的空腔体积、化学环境以及两个铝原子的距离)对其酸催化性能(反应路径及反应速率)影响很大。由于分子筛的合成涉及一个复杂晶化的过程,影响骨架铝原子分布的因素众多,如起始物料的种类和浓度、晶化条件、杂原子以及后处理方法等,科研人员对骨架铝原子调控方法展开了大量的研究。基于此,综述了相关研究成果,以期推动实现以功能为导向的特定铝原子分布分子筛的定向合成。

关键词：分子筛骨架铝原子酸位点晶化定向合成

Competence Set Analysis Under Risk and Uncertainty

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Journal of Systems Engineering and Electronics 2001年第2期12卷 12-18页

作者： Feng Junwen School of economics and management, Nanjing university of Scienece and Technology, 210094. P. R.{3. School of economics and management Nanjing University of Scienece and Technology 210094 P. R. China

The competence set analysis technology can be applied to solve the decision making problems successfully and satisfactorily. This paper mainly focuses on the expanding strategy research and development of the competence set under risk and uncertainty. A systematic expression of the competence set analysis is described, several expanding principles and strategies with regard to several different cases are presented, and their applications in the personnel training program are discussed, some conclusions and suggestions to be developed in a further work are included.

关键词： Competence set analysis Competence expansion Decision analysis Habitual domain Risk and uncertainty analysis Expansion principle and strategy.

A Table Based Algorithm for MinimumDirected Spanning Trees

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Journal of Systems Engineering and Electronics 2001年第1期12卷 22-28页

作者： Feng Junwen School of economics and management, Nanjing university of Science and Technology, 210094. P. R.{3. School of economics and management Nanjing University of Science and Technology 210094: P. R. China

As far as the weighted digraph is considered, an optimal directed spanning tree algorithm called table based algorithm (TBA) is proposed in the paper based on the table instead of the weighted digraph. The optimality ... 详细信息

关键词： Optimal spanning tree problem Digraph Directed tree Table representation.

Quantificational analysis on progress of river water quality in china

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Journal of Environmental Sciences 2009年第6期21卷 770-773页

作者： YUN Yi,ZOU Zhihong,FENG Wei,RU Mai School of economics and management,Beihang university,Beijing 100191,{3.. School of economics and management Beihang University Beijing 100191 China. E-mail: winniecloud81@***

In order to understand the dynamic change of water quality in a specific period of time,a type of possibility transition matrix based on the theory of Markov process was *** transition possibility with a weight to calculate the degree of absolute advancement was given based on the result of water quality *** concept of relative advancement was *** was used to evaluate the extent of water quality changed in a period of *** method was used to calculate the degrees of relative advancement for 4.rivers in china,and the results were analyzed.

关键词： water quality evaluation possibility transition matrix Markov process degree of advancement

Development trend and prospect of solid phase extraction technology

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Chinese Journal of Chemical Engineering 2022年第2期35卷 245-255页

作者： Chao Zhang Huifang Xing Liangrong Yang Pengfei Fei huizhou Liu National Science Library Chinese Academy of SciencesBeijing 100190China College of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Library Information and Archives ManagementSchool of Economics and ManagementUniversity of Chinese Academy of SciencesBeijing 100190China Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Solid phase extraction is widely used in sample pretreatment,concentration and analysis processes due to high selectivity and suitability for low concentration sample *** this review,we systematically summarized and discussed the development trends of solid phase extraction by bibliometrics *** analyzing papers output scale,the research and development direction of solid phase extraction technology is *** also give an overview on current strategies of novel solid phase extraction from the separation medium and separation *** paper aims to describe the global research profile and the development trends of solid phase extraction,to help researchers to accurately grasp the research trend and to provide support for scientific research institutions to formulate scientific policies and strategic ***,the prospect of the development and application of solid phase extraction is also discussed.

关键词： Solid phase extraction Papers output scale Quality of research Novel technology

Interface Assets:Uncontrolled Resources of Competitive Advantage

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清华大学学报（哲学社会科学版） 2009年第S1期24卷 81-88页

作者： GUO Guang-rui(School of economics and management,Tsinghua university,Beijing 100084.{3.)

The purpose of strategic management is to produce knowledge of,to understand and to explain how firms achieve and sustain competitive *** the assumption that something beyond firm-controlled resources and industry structure contribute significantly to firm's competitive advantage as well,I propose a new construct of interface assets to integrate all the resources beyond firm-controlled resources and industry structure.I examine the attributes of interface assets and propose four assumptions about interface assets.I also develop a framework that illustrates how interface assets contribute to competitive ***,I conclude the article by discussing the theoretical and practical implication of the interface assets model.

关键词： interface assets competitive advantageAbout the Author: GUO Guang-rui,School of economics and management,Tsinghua university,Ph.D.Candidate,research direction: strategic management,competitive advantage

Rural Credit Innovation:Experience of china

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清华大学学报（哲学社会科学版） 2009年第S1期24卷 89-96页

作者： HAO Xiu-qing(School of economics and management,Tsinghua university,Beijing 100084.{3.)

This paper is based on literature and interviews with the management of a leading agricultural firm which has developed a new credit rural *** uses the case study to generalize a new model of rural credit *** provides the government with an example on how to help solve rural credit problems and poverty *** also provides the banking industry with a new profit-making model,which benefits farmers at the same time as well.

关键词： Rural Credit Innovation Practice Agricultural Industrialization chinaAbout the Author: HAO Xiu-qing,School of Eonomics and management,Tsinghua university,Ph.D.Candidate,research direction: technology innovation

Towards a Closed-Loop Materials Economy

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Chinese Journal of Population,Resources and Environment 2004年第1期2卷 9-12页

作者： Zhu DajianSchool of economics & management, Tongji university, Shanhai 200092,{3. School of economics and management Tongji University Shanhai 200092 China

This paper introduces the recent appearance of a circular economy in such industrialized countries as Germany and Japan and outlines its concept and principles. The author emphasizes that a circular economy should become the breakthrough point for sustainable development and will enable a shift to a sustainable society of 'doing less with less' away from the current high-consumption society of 'doing more with more'

关键词： Circular economy Sustainable development Reduce Reuse and Recycle