Water eutrophication has become a worldwide environmental problem in recent years.Once a water body is eutrophicated,it will lose its primary functions and subsequently influence sustainable development of society and...Water eutrophication has become a worldwide environmental problem in recent years.Once a water body is eutrophicated,it will lose its primary functions and subsequently influence sustainable development of society and economy.Therefore,analysis of eutrophication becomes one of the most essential issues at present.With the ability to deal with vague and uncertain information,and express knowledge in a rule form,the rough set theory(RST) has been widely applied in diverse domains.The advantage of RST is that it can compress the rule and remove needless features by reduction inference rule.By this way,the rule gets effectively simplified and inference efficiency gets improved.However,if data amount is relatively big,it could be a process with large calculated amount to search rules by looking up tables.Petri nets(PNs) possesses so powerful parallel reasoning ability that inference result could be obtained rapidly merely by simple matrix manipulation with no need for searching rules by looking up tables.In this work,an integrated RPN model combining RST with PN was used to analyze relations between degrees of water eutrophication level and influence factors in the Pengxi River of Three Gorges Reservoir.It was shown that the RPN model could analyze water eutrophicaion accurately and quickly,and yield decision rules for the decision-makers at water purification plants of the water quality and assist them in making more cost-effective decisions.展开更多
The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that g...The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that guarantees its stability. Private pension insurance provides personal retirement accounts and proper ownership of the accumulated funds, but its sustainability during prolonged market crises and inadequate risk sharing are often questioned. In order to address this issue, this paper makes both an assessment and analysis of the arguments put forward in favor of the preservation of the pay-as-you-go system and a comparison of this system with some of the main characteristics of the private accounts system. This is the basis for seeking the objectively defined role of the pay-as-you-go system in the conditions of the market economy. A couple of conclusions that have been formulated might be of interest for the future improvement of the organization and management of pension insurance.展开更多
Urban ecological risk analysis is a relatively new study field.Rapid industrial modernization and urbanization have significantly improved the living standards of the city.However,as environmental,safety and health is...Urban ecological risk analysis is a relatively new study field.Rapid industrial modernization and urbanization have significantly improved the living standards of the city.However,as environmental,safety and health issues are causing widespread concern,these problems have potential serious threat on ecosystems and human health.So how to solve many problems arising from city has become a key to sustainable development of human civilization.The present article analyzed the major problems that the city confronts and pointed out the main measures from the aspects of urban environment,safety and health.展开更多
In order to address the plight of rural financing, the 2007 China Banking Regulatory Commission, China＇s State Council started rural banks in provinces, towns and villages. There are so many problems faced by rural b...In order to address the plight of rural financing, the 2007 China Banking Regulatory Commission, China＇s State Council started rural banks in provinces, towns and villages. There are so many problems faced by rural banks. The most pressing issue is the sustainability of targeting deviate due to restraints, shortage of funds, and loan risks. In order to effectively address these issues, this paper presents some solutions展开更多
Iran needs around 1.5 million residential homes to be constructed annually to answer its cumulative demand by 2025. Given the current situation of the Iranian construction industry, it seems almost impossible to achie...Iran needs around 1.5 million residential homes to be constructed annually to answer its cumulative demand by 2025. Given the current situation of the Iranian construction industry, it seems almost impossible to achieve this objective by using traditional methods of construction alone. Offsite manufacturing （OSM） can potentially increase the housing output in Iran thanks to its advantages over traditional methods of construction. However, OSM imposes a different set of risks which should be studied in the Iranian context. This study aims to investigate the readiness of the Iranian construction industry if offsite methods were to be introduced to the country in large industrial scales. To this end, a questionnaire survey was conducted to identify the risks and required actions in order to achieve successful application of these methods. Several subjects including costs, practicality, design and construction processes, demand, governmental policies, technology, and sustainability issues were investigated as the core research areas. The results revealed that, considering the current situations, it would be highly risky to introduce offsite methods of construction to Iran. Research findings highlight some key areas including design and construction processes, economies of scale, governmental supports, and education, which should be addressed to mitigate the identified risks.展开更多
Caused by its multi purpose applicability in different areas of the energy system, biogas is an important source for the concept of ＂Energy Turnaround for Sustainability＂. To clarify the regional risks for biogas pr...Caused by its multi purpose applicability in different areas of the energy system, biogas is an important source for the concept of ＂Energy Turnaround for Sustainability＂. To clarify the regional risks for biogas production due to Diabrotica virgifera virgifera （Coleoptera： Chrysomelidae） （Dw） results from the questionnaire on the current situation of the biogas plants in Germany are compared to our Dvv monitoring experiences and literature data. Maize silage is the main source for biogas production in Germany. Dvv is the most important maize pest within the United States. It also was monitored in different German States during the last years. The Dvv infestation risk and consequent damages are closely linked to the percentage of maize within the regional crop rotations scheme. Maize cropping within a monocultural production can lead to a significant harvest reduction of 30% to 80% after the outbreak of Dvv, especially in dry years. A high risk to the biogas production based on silage maize especially in some areas in North West and in southern Germany has been detected. Further research is needed focusing on （1） strategies to control Dvv, （2） development in alternative energy crops regarding their susceptibility to Dvv and （3） development of technologies along the process chains for using alternative substrates, especially residues from plant production.展开更多
Social security fund is the key of social security system to run the important material. Policy implementation of social security funds, operation supervision of safety and risk prevention and control and management, ...Social security fund is the key of social security system to run the important material. Policy implementation of social security funds, operation supervision of safety and risk prevention and control and management, is to perfect social security system, to realize the sustainable development of the social security system important link. This paper expounds the basic status quo of China＇s social security fund risk control, risk prevention and control, the necessity of fund risk management, and analyzed the social power supervision in the way and the important significance.展开更多
The motto of Tongji University, whose name literally means ＂we are all in the same boat, and must work together to reach common goals＂, describes the harvest of ISEE leaders＇ mission to China in May 2007. ISEE Pres...The motto of Tongji University, whose name literally means ＂we are all in the same boat, and must work together to reach common goals＂, describes the harvest of ISEE leaders＇ mission to China in May 2007. ISEE President Joan Martinez-Alier, President-Elect Peter May and the society＇s founder and first President, Robert Costanza as well as ISEE member Robert Ayres, participated in a series of events and meetings in Shanghai and Beijing with a view to build institutional collaboration.展开更多
In recent years, the number of the listing corporations in China is increasing, and the promotion of the national economic development is also more obvious. But in the process, because of the short time onto the marke...In recent years, the number of the listing corporations in China is increasing, and the promotion of the national economic development is also more obvious. But in the process, because of the short time onto the market and the lack of the expvrience, some of the listed companies also cannot be compared with the enterprises in the western developed countries in a large extent. Especially in the aspect of the financial management, there are many defects. For example, the control efforts of the financial risks arc inadequate, and the awareness of the management personnel and the employees on the risks is weak, and so on In this case, the listed corporations must strengthen the management of the company＇s financial risks, develop the more comprehensive financial risk managernent system, and thus ensurc that the companies can have the healthy, stable and sustainable development.展开更多
基金Project(2014ZX07104-006)supported by the National Scientific and Technological Major Project of China
文摘Water eutrophication has become a worldwide environmental problem in recent years.Once a water body is eutrophicated,it will lose its primary functions and subsequently influence sustainable development of society and economy.Therefore,analysis of eutrophication becomes one of the most essential issues at present.With the ability to deal with vague and uncertain information,and express knowledge in a rule form,the rough set theory(RST) has been widely applied in diverse domains.The advantage of RST is that it can compress the rule and remove needless features by reduction inference rule.By this way,the rule gets effectively simplified and inference efficiency gets improved.However,if data amount is relatively big,it could be a process with large calculated amount to search rules by looking up tables.Petri nets(PNs) possesses so powerful parallel reasoning ability that inference result could be obtained rapidly merely by simple matrix manipulation with no need for searching rules by looking up tables.In this work,an integrated RPN model combining RST with PN was used to analyze relations between degrees of water eutrophication level and influence factors in the Pengxi River of Three Gorges Reservoir.It was shown that the RPN model could analyze water eutrophicaion accurately and quickly,and yield decision rules for the decision-makers at water purification plants of the water quality and assist them in making more cost-effective decisions.
文摘The most recent trends in population dynamics have provoked a rigorous debate whether the private or the public pension insurance system should be predominant. The pay-as-you-go system is dominated by the state that guarantees its stability. Private pension insurance provides personal retirement accounts and proper ownership of the accumulated funds, but its sustainability during prolonged market crises and inadequate risk sharing are often questioned. In order to address this issue, this paper makes both an assessment and analysis of the arguments put forward in favor of the preservation of the pay-as-you-go system and a comparison of this system with some of the main characteristics of the private accounts system. This is the basis for seeking the objectively defined role of the pay-as-you-go system in the conditions of the market economy. A couple of conclusions that have been formulated might be of interest for the future improvement of the organization and management of pension insurance.
文摘Urban ecological risk analysis is a relatively new study field.Rapid industrial modernization and urbanization have significantly improved the living standards of the city.However,as environmental,safety and health issues are causing widespread concern,these problems have potential serious threat on ecosystems and human health.So how to solve many problems arising from city has become a key to sustainable development of human civilization.The present article analyzed the major problems that the city confronts and pointed out the main measures from the aspects of urban environment,safety and health.
文摘In order to address the plight of rural financing, the 2007 China Banking Regulatory Commission, China＇s State Council started rural banks in provinces, towns and villages. There are so many problems faced by rural banks. The most pressing issue is the sustainability of targeting deviate due to restraints, shortage of funds, and loan risks. In order to effectively address these issues, this paper presents some solutions
文摘Iran needs around 1.5 million residential homes to be constructed annually to answer its cumulative demand by 2025. Given the current situation of the Iranian construction industry, it seems almost impossible to achieve this objective by using traditional methods of construction alone. Offsite manufacturing （OSM） can potentially increase the housing output in Iran thanks to its advantages over traditional methods of construction. However, OSM imposes a different set of risks which should be studied in the Iranian context. This study aims to investigate the readiness of the Iranian construction industry if offsite methods were to be introduced to the country in large industrial scales. To this end, a questionnaire survey was conducted to identify the risks and required actions in order to achieve successful application of these methods. Several subjects including costs, practicality, design and construction processes, demand, governmental policies, technology, and sustainability issues were investigated as the core research areas. The results revealed that, considering the current situations, it would be highly risky to introduce offsite methods of construction to Iran. Research findings highlight some key areas including design and construction processes, economies of scale, governmental supports, and education, which should be addressed to mitigate the identified risks.
文摘Caused by its multi purpose applicability in different areas of the energy system, biogas is an important source for the concept of ＂Energy Turnaround for Sustainability＂. To clarify the regional risks for biogas production due to Diabrotica virgifera virgifera （Coleoptera： Chrysomelidae） （Dw） results from the questionnaire on the current situation of the biogas plants in Germany are compared to our Dvv monitoring experiences and literature data. Maize silage is the main source for biogas production in Germany. Dvv is the most important maize pest within the United States. It also was monitored in different German States during the last years. The Dvv infestation risk and consequent damages are closely linked to the percentage of maize within the regional crop rotations scheme. Maize cropping within a monocultural production can lead to a significant harvest reduction of 30% to 80% after the outbreak of Dvv, especially in dry years. A high risk to the biogas production based on silage maize especially in some areas in North West and in southern Germany has been detected. Further research is needed focusing on （1） strategies to control Dvv, （2） development in alternative energy crops regarding their susceptibility to Dvv and （3） development of technologies along the process chains for using alternative substrates, especially residues from plant production.
文摘Social security fund is the key of social security system to run the important material. Policy implementation of social security funds, operation supervision of safety and risk prevention and control and management, is to perfect social security system, to realize the sustainable development of the social security system important link. This paper expounds the basic status quo of China＇s social security fund risk control, risk prevention and control, the necessity of fund risk management, and analyzed the social power supervision in the way and the important significance.
文摘The motto of Tongji University, whose name literally means ＂we are all in the same boat, and must work together to reach common goals＂, describes the harvest of ISEE leaders＇ mission to China in May 2007. ISEE President Joan Martinez-Alier, President-Elect Peter May and the society＇s founder and first President, Robert Costanza as well as ISEE member Robert Ayres, participated in a series of events and meetings in Shanghai and Beijing with a view to build institutional collaboration.
文摘In recent years, the number of the listing corporations in China is increasing, and the promotion of the national economic development is also more obvious. But in the process, because of the short time onto the market and the lack of the expvrience, some of the listed companies also cannot be compared with the enterprises in the western developed countries in a large extent. Especially in the aspect of the financial management, there are many defects. For example, the control efforts of the financial risks arc inadequate, and the awareness of the management personnel and the employees on the risks is weak, and so on In this case, the listed corporations must strengthen the management of the company＇s financial risks, develop the more comprehensive financial risk managernent system, and thus ensurc that the companies can have the healthy, stable and sustainable development.
