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The Boundary and Object for Evaluation on Environmental Cost for Commercial Plantation

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chinese Forestry Science and Technology 2002年第3期1卷 65-70页

作者： LI ZhiyongResearch institute of Forestry policy and Information. chinese academy of Forestry, Wan Shou Shan, beijing 100091, china

The improper cultivation of commercial plantation, which is a management activity with the properties of economy, will lead to environment losses such as land degradation, soil erosion, pests and diseases. Environmental cost is easily neglected by executives, however, it exists actually. The variety, intersecting and overlapping of environment losses decide the boundary of evaluation and the necessity of indices on environmental cost. The research analyzes the characteristics and disciplinarians of envi...

关键词： commercial plantation cost environment ecology economy

Collective Forest Tenure Reform in Nature Reserves in china:Problems and Countermeasures

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chinese Forestry Science and Technology 2009年第2期8卷 12-18页

作者： CHEN Jie Research institute of Forestry policy and Information,chinese academy of Forestry,beijing 100091,P.R.china

Collective forest tenure reform is now carried out throughout china with the aim to clarify the property,increase forest farmers' income and motivate the development of *** the collective forest tenure reform in nature reserves comes to a *** current implemented laws and regulations provide that forests and trees in nature reserves shall be under strict protection,while the forest farmers hope to improve their livelihood in the *** paper discussed the problems encountered in the c...

关键词： collective forest tenure reform nature reserve forest land eco-compensation community co-management

Current Status and Prospects of Biomass Energy Industry in china

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chinese Forestry Science and Technology 2009年第1期8卷 47-52页

作者： LIU Ning Research institute of Forestry policy and Information,chinese academy of Forestry,beijing 100091,P.R.china

At present biomass energy industry is in its infancy in china and it has a bright future. Biomass energy production used grain as raw materials has entered industrialization *** key technologies of biomass energy industry are coming to *** has issued relevant industrial standards laws and regulations,and has provided support in finance,loan,tax,*** china's biomass energy industry is faced with many problems which need to be *** example,taking grain as raw materials is unsustain...

关键词： biomass energy industry status evaluation major problems prospects

Review and Outlook on Forest Certification Development

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chinese Forestry Science and Technology 2012年第Z1期11卷 12-19页

作者： HU Yanjie Research institute of Forestry policy and Information,chinese academy of Forestry,beijing 100091,P.R.china

The historic development of forest certification was firstly reviewed in order to understand how forest certification has developed throughout the *** characteristics of forest certification were analyzed in details,including the essence of forest certification,approach of forest certification,structure of forest certification and development processes of forest certification ***,the forest certification development in china was reviewed,including background,basic principles and objectives and main *** on the reviews on forest certification,recommendations were given so as to greatly boost the development of forest certification in china.

关键词： forest certification sustainable forest management standard

Discussion on the dispersion & agglomeration of aircraft industry

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Journal of Pharmaceutical Analysis 2009年第3期21卷 192-197,208页

作者： Bo Chu1,21. institute of Geographic sciences and Natural Resources Research,CAS,beijing 100101 2. Graduate School of the chinese academy of sciences,beijing 100049,china. institute of Geographic sciences and Natural Resources Research CAS Beijing 100101 Graduate School of the chinese academy of sciences Beijing 100049 China

The aircraft industry is crucial to the economy and security of a nation. In this paper,the spatial characteristics and patterns of the aircraft industry are analyzed on different spatial scales. It is found that there is a ’Matthew effect’ in the global aircraft industry and the spatial evolution of the industry is consistent with the industrialization process of the whole country. It is also revealed that the spatial evolution of the country is driven by both the centripetal forces including capital,talents,technology and agglomeration economies and the centrifugal forces including the comparative advantage,cost & risk sharing,emerging markets,development policy for less-developed regions and the military imperative. These forces have both market-stabilizing and market-disrupting effects on the spatial evolution of the aircraft industry. The study suggests that lessons drawn from the experiences in the United States and France are expected to be conducive to the rise of china’s aircraft industry in the future.

关键词： aircraft industry dispersion agglomeration spatial evolution

MARKOV DECISION PROGRAMMING-THE FIRST PASSAGE MODEL WITH DENUMERABLE STATE SPACE

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Systems Science and Mathematical sciences 1992年第4期5卷 340-351页

作者： LIU Jianyong LIU Ke (institute of Applied Mathematics,Academia Sinica,beijing 100080,china)

In this paper,we discuss MDP with discrete time parameter-the firstpassage model with denumerable state *** assumption A in this paper,we prove that an ε(>0)-optimal stationary policy *** find an ε-optimalstationary... 详细信息

关键词： Markov decision programming first passage model optimal policy

Operational Risk Assessment:An ERM-POT Approach

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Operational Risk Assessment:An ERM-POT Approach

首届风险分析与危机反应国际学术研讨会

作者： LI Jianping~1 MENG Fanjun~2 GAO Lijun~3 ~1institute of policy & management,chinese academy of sciences,beijing 100080,P.R.china ~2Economics school,Renmin University of china,beijing 100872,P.R.china ~3 management School,Shandong University of Finance,Jinan 250014,P.R.china

＜正＞Extreme value theory （EVT） has been proposed to the finance field more recently as a useful toolkit for analyzing the nonstandard （more precisely abnormal） data *** on the characteristic of operational losses of chinese Commercial Banks, we presented an ERM-POT （Exponential Regression Model and the Peaks-Over-Threshold） method to measure the operational risk under the EVT framework As we know,it is important to choose the threshold in ***,selection of the threshold by Hill plot or mean excess function （MEF） may produce biased *** ERM-POT method can lead to bias-corrected estimators and techniques for optimal *** the ERM-POT,we select the optimal threshold,and then the value-at- risk （VaR） is obtained. The experiment results show the method is reasonable.

关键词： Operational risk EVT POT ERM VaR

来源： cnki会议评论

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瞬时单位线的优化估计

水力发电学报 2003年第1期22卷 70-75页

作者：金菊良丁晶魏一鸣合肥工业大学土木建筑工程学院安徽合肥230009 四川大学水电学院四川成都610065 中国科学院科技政策与管理科学研究所北京100080

瞬时单位线集中反映了流域的汇流特性 ,便于流域暴雨洪水关系的理论研究和地区综合 ,在流域防洪兴利工程计算领域具有重要意义。目前常用矩法估计瞬时单位线 ,据此还原的洪水过程与实测洪水过程之间 ,特别是洪峰点之间 ,常具有明显的差... 详细信息

瞬时单位线集中反映了流域的汇流特性 ,便于流域暴雨洪水关系的理论研究和地区综合 ,在流域防洪兴利工程计算领域具有重要意义。目前常用矩法估计瞬时单位线 ,据此还原的洪水过程与实测洪水过程之间 ,特别是洪峰点之间 ,常具有明显的差别。为此 ,提出通过用加速遗传算法求解还原洪水过程与同次实测洪水过程加权残差绝对值和最小化问题 ,来优化估计瞬时单位线的一套数值方法。实例研究的结果表明了该方法的有效性 ,计算精度高于矩法。

关键词：瞬时单位线洪水预报优化遗传算法

PROBABILITY CRITERION IN INVENTORY SYSTEM WITH VARYING STOCHASTIC DEMANDS

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Systems Science and Mathematical sciences 1994年第3期7卷 211-217页

作者： LIU Baoding GU Jifa (institute of Systems Science, Academia Sinica, beijing 100080, china)

ＰＲＯＢＡＢＩＬＩＴＹＣＲＩＴＥＲＩＯＮＩＮＩＮＶＥＮＴＯＲＹＳＹＳＴＥＭＷＩＴＨＶＡＲＹＩＮＧＳＴＯＣＨＡＳＴＩＣＤＥＭＡＮＤＳ￥ＬＩＵＢａｏｄｉｎｇ；ＧＵＪｉｆａ（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃ... 详细信息

ＰＲＯＢＡＢＩＬＩＴＹＣＲＩＴＥＲＩＯＮＩＮＩＮＶＥＮＴＯＲＹＳＹＳＴＥＭＷＩＴＨＶＡＲＹＩＮＧＳＴＯＣＨＡＳＴＩＣＤＥＭＡＮＤＳ￥ＬＩＵＢａｏｄｉｎｇ；ＧＵＪｉｆａ（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃｅ，ＡｃａｄｅｍｉａＳｉｎｉｃａ，...

关键词： Inventoryl probability criterion varying stochastic demands.