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A method of analysis of macro water environmental systems
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作者 Bao Jingling (Tianjin institute of Environment Protection Science, Tianjin 300191 China) Yang Baochen Zhang Shiying(Department of Engineering Economics & Systems Engineering,Tianjin University, Tianjin 300072, China) 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1994年第4期496-503,共8页
The phases of water environmental system (WES) and their emphatic intersections areanalysed in this paper. and from the view point of system analysis , an analytical process of WES is provided. Based on the balance ne... The phases of water environmental system (WES) and their emphatic intersections areanalysed in this paper. and from the view point of system analysis , an analytical process of WES is provided. Based on the balance network of WES, a goal programming model for regional water environmentalplanning and the main computational result for a coastal city are provided , thus proving its usefulness andeffectiveness. 展开更多
关键词 water environmental system balance network of water environmental system goal program-ming.
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Service and Responsibility: Reinforcing the Environmental E-government of China
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作者 Hong Wang Xu Wu 《Chinese Business Review》 2006年第5期27-34,共8页
Environmental E-government plays an important role in the progress of uniting the harmonious development between human and nature, and building the environment-friendly-society. This paper discusses the relationship b... Environmental E-government plays an important role in the progress of uniting the harmonious development between human and nature, and building the environment-friendly-society. This paper discusses the relationship between environmental E-government and government function of the environmental management. To develop environmental E-government can better the executive ability of the government to manage the environment and serve the public. It can realize the over-all covering of environmental information beyond time and space. Also, it can enhance the mutual action between the society and the government, and improve the effectiveness of the government to manage the environment as well. 展开更多
关键词 serving government responsible government environmental E-government environmental information
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Empirical research on drive mechanism of firms' environmental management
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作者 Cao Jingshan Qin Ying 《Ecological Economy》 2007年第1期40-50,共11页
Firms’transformation from passive envrionmental management to active environmental management is thekey to solving environmental problems. This paper empirically studies the impact of environmental management incen-t... Firms’transformation from passive envrionmental management to active environmental management is thekey to solving environmental problems. This paper empirically studies the impact of environmental management incen-tives on environmental management through model construction. Based on the data and reality of China, we can build aconcept model of environmental management driving mechanism, and put forward theoretical hypothesis that can betested: take the 13 environmental management behaviors (EMBs) as substitute of the comprehensiveness, introducecounting variables, and use NB model, Possion Model and Ordered Probit model the regression analysis. The theory andmethods brought forward in this paper will provide references for firms in China to further implement voluntaryenvironmental management, and offer advises and countermeasures for leaders to implement environmental manage-ment effectively. 展开更多
关键词 Firm Comprehensiveness of environmental management environmental performance Possion Model Ordered Probit model
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Environment and Environmental Protection in Tibet
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《China's Tibet》 1997年第1期23-24,共2页
关键词 environment and environmental Protection in Tibet
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A STUDY ON ECONOMY EVALUATION ON THE PROFIT AND LOSS OF GEOLOGIC ENVIRONMENTAL QUALITY ABOUT GEOLOGIC ENVIRONMENTAL EXPLOITATION PROJECT
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《石家庄经济学院学报》 1995年第S1期106-109,共4页
The problems of environmental geology refer to the geologic phenomena, incidents or accidents arising from action of environmental geology. The action is mainly the mutual influence between human activity and geologic... The problems of environmental geology refer to the geologic phenomena, incidents or accidents arising from action of environmental geology. The action is mainly the mutual influence between human activity and geologic environment. When human activity is uncoordinated with objective laws of the geologic environment, the problems of environmental geology or economic loss would occur.Therefore,the level and the changing orientation of geologic environmental quality are relative to the types of human activity,particularly relative to human intentional-activities of geologic environmental exploitation project. The geologic environment fitting to mining may not fit to urban construction,and fitting to water conservancy and hydroelectric projects may not fit to communication,and so on.Economy evaluation on the profit and loss of geologic environmental quality is exactly to depict the level of the profit and loss of geologic environmental quality about geologic environmental exploitation projects and the 展开更多
关键词 TH A STUDY ON ECONOMY EVALUATION ON THE PROFIT AND LOSS OF GEOLOGIC environmental QUALITY ABOUT GEOLOGIC environmental EXPLOITATION PROJECT
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THE CONSTRUCTION OF DENUMERABLE q-PROCESSES IN RANDOM ENVIRONMENTS SATISFYING (F) OR (B) 被引量:2
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作者 胡迪鹤 胡晓予 《Acta Mathematica Scientia》 SCIE CSCD 2008年第4期975-988,共14页
This article is a continuation of[9].Based on the discussion of random Kolmogorov forward(backward)equations,for any given q-matrix in random environment, Q(θ)=(q(θ;x,y),x,y∈X),an infinite class of q-proces... This article is a continuation of[9].Based on the discussion of random Kolmogorov forward(backward)equations,for any given q-matrix in random environment, Q(θ)=(q(θ;x,y),x,y∈X),an infinite class of q-processes in random environments satisfying the random Kolmogorov forward(backward)equation is constructed.Moreover, under some conditions,all the q-processes in random environments satisfying the random Kolmogorov forward(backward)equation are constructed. 展开更多
关键词 Markov process in random environment q-matrix in random environment q-process in random environment
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The status evaluation of the permafrost environment along the Chaida'er-Muli Railway in southern Qilian Mountains in northern Qinghai Province,China 被引量:5
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作者 CAO Wei SHENG Yu +3 位作者 CHOU Ya-ling WU Ji-chun LI Jing WANG Sheng-ting 《Journal of Mountain Science》 SCIE CSCD 2016年第12期2124-2134,共11页
Engineering construction has major influence on the permafrost environment.This paper analyzes the interaction between engineering construction and permafrost environment along the Chaidaer-Muli Railway(simply,CMR) ba... Engineering construction has major influence on the permafrost environment.This paper analyzes the interaction between engineering construction and permafrost environment along the Chaidaer-Muli Railway(simply,CMR) based on the press-state-response(PSR) framework.The permafrost environmental system is divided into three subsystems,consisting of permafrost thermal stability,proneness to the freeze-thawing erosion and permafrost ecological fragility.Each subsystem considers its most important influencing factors.Catastrophe Progression Method(CPM) is applied to calculate the current environment condition along the railway.The result indicates that:(1) as far as the thermal stability is concerned,most sections along the CMR are mainly concentrated in rank Ⅲ(fair situation),and a few in Ⅱ(good situation) and Ⅳ(bad situation),respectively;(2) for the proneness tothe freeze-thawing erosion,the entire railway route falls largely in rank Ⅱ(good situation);(3) along the CMR,the ecological fragility of the permafrost environment is in rank Ⅱ(good situation),or slightly fragile;(4) overall,the permafrost environments along the CMR are in rank Ⅲ(fair situation) or Ⅱcondition(good situation).In general,the permafrost environment along the CMR is fair.It is mainly because a series of active measures of protecting permafrost were taken for stabilizing the CMR foundation soils.On the one hand,we should try our best to minimize the influences that engineering activities have exerted on ecology and environment,on the other hand,the positive measures have made improvements to prevent the permafrost environment from deterioration. 展开更多
关键词 Permafrost environment Press-stateresponse framework Catastrophe theory Chaida'erMu Railway environmental impact
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Classroom Environment in a Language Class
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作者 Xiangli Cheng 《Sino-US English Teaching》 2004年第8期20-25,共6页
The paper discusses the classroom environment and its influence on language in the classroom. Classroom environment consists of three aspects: physical environment, psychological environment and social environment. W... The paper discusses the classroom environment and its influence on language in the classroom. Classroom environment consists of three aspects: physical environment, psychological environment and social environment. Whatever approach is adopted in the classroom, it affects ELT in the classroom directly or indirectly. 展开更多
关键词 classroom environment physical environment psychological environment social environment
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An intelligent control method for a large multi-parameter environmental simulation cabin 被引量:12
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作者 Li Ke Liu Wangkai +1 位作者 Wang Jun Huang Yong 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2013年第6期1360-1369,共10页
The structure and characteristics of a large multi-parameter environmental simulation cabin are introduced.Due to the diffculties of control methods and the easily damaged characteristics,control systems for the large... The structure and characteristics of a large multi-parameter environmental simulation cabin are introduced.Due to the diffculties of control methods and the easily damaged characteristics,control systems for the large multi-parameter environmental simulation cabin are diffcult to be controlled quickly and accurately with a classical PID algorithm.Considering the dynamic state characteristics of the environmental simulation test chamber,a lumped parameter model of the control system is established to accurately control the multiple parameters of the environmental chamber and a fuzzy control algorithm combined with expert-PID decision is introduced into the temperature,pressure,and rotation speed control systems.Both simulations and experimental results have shown that compared with classical PID control,this fuzzy-expert control method can decrease overshoot as well as enhance the capacity of anti-dynamic disturbance with robustness.It can also resolve the contradiction between rapidity and small overshoot,and is suitable for application in a large multi-parameter environmental simulation cabin control system. 展开更多
关键词 environmental cabin environmental testing Expert system Fuzzy control Mathematical models Turbines
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Review of challenges and strategies for balanced urban-rural environmental protection in China 被引量:2
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作者 Beidou XI Xiaoguang LI +6 位作者 Jixi GAO Ying ZHAO Hongliang LIU Xunfeng XIA Tianxue YANG Lieyu ZHANG Xuan JIA 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2015年第3期371-384,共14页
With the rise of environmentalism in China, great efforts have been devoted to environmental protec- tion over the past several decades. Compared with urban environmental protection, rural environmental protection has... With the rise of environmentalism in China, great efforts have been devoted to environmental protec- tion over the past several decades. Compared with urban environmental protection, rural environmental protection has not been attached enough importance in China due to the dual-track structure of socio-economic development. As a result, rural China is shouldering disproportionally heavy environmental burdens partly because of the differences and biases between urban and rural environmental protection seen in environmental policies, environ- mental rights and interests, environmental protection investment, and the environmental protection awareness of people. To eliminate the gap between rural and urban environmental protection, and achieve the goal of "balanced urban-rural environmental protection" (BUREP), government should consider mapping out proper policies and strategies. In this paper we put forward an innovative strategy of BUREP against the background of China's urban-rural environmental protection. First, we review the current status of rural environmental protection status and its challenges compared with urban environ- mental protection in China. Secondly, we analyzed the main driving factors and reasons deeply, and then we put forward the BUREP strategy base on the unequal status between urban and rural environment. Finally, we proposed the framework of BUREP. This study may serve as a scientific reference regarding decision-making in coordinating urban and rural environmental protection and in constructing the new countryside of China. 展开更多
关键词 urban environment rural environment balanced urban--rural environmental protection framework of balanced urban-rural environmental protection (BUREP)
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Ecological Monitoring Perspectives from Biotesting of Surface Waters: A Study of Pavlovsk Reservoir (Bashkortostan, Russia)
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作者 Dmitry Seifert Yagafar Abdrashitov +1 位作者 Elena Bakhonina Inna Ovsyannikova 《Journal of Environmental Science and Engineering(B)》 2013年第11期621-628,共8页
The cost of environmental analysis is becoming astronomically high at the global scale. One of the major trends in the respective research activities is the development of biotesting methods. Such methods, in addition... The cost of environmental analysis is becoming astronomically high at the global scale. One of the major trends in the respective research activities is the development of biotesting methods. Such methods, in addition to ecotoxicology, are highly demanded for environmental monitoring and ecological standardization. The development of biotesting in toxicology, however, is limited to the "battery of tests" paradigm, while environmental monitoring and ecological standardization are based on the "uniformity of measurements" paradigm. A "reference bioindicator" is proposed to harmonize these approaches. A reference bioindicator serves for comparison of data obtained by different bioindicators. This method was approved for the state environmental control. Application of reference bioindicators makes analytical procedure substantially cheaper. It requires, however, thorough calibration in relation to specific environmental factors (such as temperature, photoperiod etc.) as well as to specific active agents and their combinations. This problem can be solved with the start-up of calibrating analytical centers and long-term study of the effects of spatiotemporal environmental factors in specific areas and for specific reference objects. This paper demonstrates long-term study results for the surface waters of Pavlovsk reservoir (Bashkortostan, Russia). 展开更多
关键词 BIOTESTING phyto-testing garden cress eutrophication and toxication of water bodies environmental monitoring environmental control.
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