After the collapse of Soviet Union, both Russia and China started to normalize their bilateral relations. Russia lost her geopolitical sphere and China started to broaden his influence in Asian-Pacific and Central Asi...After the collapse of Soviet Union, both Russia and China started to normalize their bilateral relations. Russia lost her geopolitical sphere and China started to broaden his influence in Asian-Pacific and Central Asian regions. The function of the Shanghai Cooperation Organization (SCO) is changing from symbolic to more substantial cooperation. It seems to be that the SCO plays multiple roles in Russia-China relations both in anti-terrorism and in energy economy. This paper is devoted to exploring the functions of the SCO and to seeing the problems in furthering Russia-China relations展开更多
China has gained rich experience in the photovoltaic industry, and is capable of providing high-quality photovoltaic products and services at lower prices,
The present and future international competitions, in the final analysis, are the talent competition. China is the world' s most populous nation, and it is the world' s most resource-rich countries of labor. Full de...The present and future international competitions, in the final analysis, are the talent competition. China is the world' s most populous nation, and it is the world' s most resource-rich countries of labor. Full development of human resources enhance the people' s level of education in general, which is today' s global trend of development of human resources in order to enhance the comprehensive national strength, but also the inevitable choice based on China' s basic national conditions of building a moderately prosperous society. It is faced with competition for talent era of knowledge economy, and it is in the face of economic globalization and integration trends in the face of China' s human resources situation. How to make heavy population burden into a country rich in human resources and how to play this advantage, how to create hundreds of millions of high-quality workers and technical personnel, innovative talents, education, especially higher education in China will play an increasingly important role.展开更多
Land use in lake basins has an important impact on the sustainable development of society,economy and ecology.Based on the literature induction method,this paper systematically summarized the current status of land us...Land use in lake basins has an important impact on the sustainable development of society,economy and ecology.Based on the literature induction method,this paper systematically summarized the current status of land use research in lake basins from six aspects:temporal and spatial changes,effects,driving factors,optimization research,and the application of remote sensing techniques in lake land use research.Correspondingly,three problems were proposed:lack of refined research on land use changes in lake basins,imperfect theoretical research on lake land use optimization research,and weak land type extraction techniques based on remote sensing images.It is believed that the future research on lake land use should focus on strengthening the refinement of land use change research in lake basins,further improving the theoretical and practical research on land use optimization in lake basins based on a variety of related theories,and further improving the interpretation algorithms of remote sensing images.展开更多
Mimosa diplotricha is an invasive perennial, scrambling, thorny, leguminous shrub of neotropical origin widely acknowledged as a major economic, agricultural and ecological burden in its introduced ranges. Although th...Mimosa diplotricha is an invasive perennial, scrambling, thorny, leguminous shrub of neotropical origin widely acknowledged as a major economic, agricultural and ecological burden in its introduced ranges. Although the plant is thought to have been present in Nigeria for well over two decades, its mode and time of introduction is uncertain. In spite of the continuing spread of, and the menace caused by M. diplotricha in Nigeria, no attempt has been made to map the distribution of the plant countrywide. Therefore, we conducted a countrywide survey between 2007 and 2009, sponsored by the Weed Science Society of Nigeria (WSSN) to determine the spread and status of Mimosa diplotricha in Nigeria. A further objective of this paper was to review literatures on Mimosa diplotricha in Nigeria and elsewhere to enable comparison. In this paper, we report on the spread, distribution and problems of Mimosa diplotricha in Nigeria based on the field monitoring surveys conducted. The distribution of this invasive plant in Nigeria has been mapped and is presented together with its ecology and problems being caused. Since the early 1990s, the weed has started to spread and invade many parts of the country causing significant damage to many natural and semi natural ecosystems. The different control options used by farmers to control Mimosa diplotricha in Nigeria are discussed. Based on the successful control of this invasive plant using the biocontrol agent, Heteropsylla spinulosa in countries such as Australia and Papua New Guinea (PNG), we discussed the biological control prospects for the management of Mimosa diplotricha in Nigeria. Such control attempts stands to benefit from international collaborations between Nigerian institutions and a host of others in Australia, PNG and/or Brazil. Finally three major causes for the massive and continuing spread of this weed in Nigeria are presented with recommendations for the Nigerian government and institutions to: 1) formulate policies and legislations regarding the control and management of invasive alien plant species which is currently nonexistent;2) enlighten the general public on the dangers of invasive alien plant species such as Mimosa diplotricha;and 3) initiate actions such as early detection and rapid response (EDRR) and biological control in order to prevent further spread of, and invasion by invasive plant species including Mimosa diplotricha.展开更多
Longtan pearl plum, as a new dominant fruit industry in Guangxi, has developed rapidly in recent years and become one of the major economic sources of fruit growers in Guangxi. It has a positive effect on promoting ec...Longtan pearl plum, as a new dominant fruit industry in Guangxi, has developed rapidly in recent years and become one of the major economic sources of fruit growers in Guangxi. It has a positive effect on promoting economic development and helping farmers to get out of poverty in Guangxi. But there is almost nothing to do with the processing and utilization. Taking the route of processing and utilization is an inevitable trend of development of Longtan pearl plum industry with the increase of the planting area and yield year by year. In this paper, based on the analysis of edible value of Longtan pearl plum, the development direction of processing and utilization of Longtan pearl plum was expounded, and some suggestions on the problems existing in the processing and utilization were put forward to provide reference for the processing and utilization of Longtan pearl plum.展开更多
After the founding of New China, Sino-British economic and trade relations went throughups and downs. Since Chinas adoption of the policy of reform and opening to the outside,especially since the return of Hong Kong t...After the founding of New China, Sino-British economic and trade relations went throughups and downs. Since Chinas adoption of the policy of reform and opening to the outside,especially since the return of Hong Kong to China, bilateral economic and trade relationshave entered a new stage of sound expansion. The United Kingdom has become Chinasthird biggest trade partner in Europe while China has become the tenth biggest supplier ofBritains imported goods. The establishment of a comprehensive strategic Sino-Britishpartnership the extensive exchanges at all levels between the two countries, the obvious andgreat economic complementarities between the two countries and the smooth return of HongKong with the successful implementation of the one country, two systems policy in HongKong SAR, have opened broad prospects for the expansion of bilateral economic and traderelations between China and the U. K. However, at present, there still exist some problems,such as too small a proportion of bilateral trade in the two countries respective foreigntrade, too small an absolute amount of British investment in China, etc. With efforts by bothsides, the mutually beneficial economic and trade relations between China and the U. K. arebound to grow further in the future.展开更多
In the published paper" Intercultural Language Education in China - Problems and Prospect" by Wang ge and Zhou zhen, it mainly discusses the problems of intercultural language education (ILE) in china from f...In the published paper" Intercultural Language Education in China - Problems and Prospect" by Wang ge and Zhou zhen, it mainly discusses the problems of intercultural language education (ILE) in china from four facets: the perspectives of language planning; teach-ing methodology; material development and the teacher education. It also focuses on its function in an EFL curriculum concerning of raising intercultural awareness and training intercultural competence. In the process of instruction, students are supposed to be exposed to multicul-tural contents and various culture input. To achieve this goal, it is necessary to develop a well-tailored ILE curriculum and textbooks. This article is to review Wang and Zhou's points critically. Thus, it can evoke the awareness of course designers to attach the importance of ILT and call for relevant actions.展开更多
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 phase.Some key technologies of biomass ener...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 phase.Some key technologies of biomass energy industry are coming to mature.China has issued relevant industrial standards laws and regulations,and has provided support in finance,loan,tax,etc.But China's biomass energy industry is faced with many problems which need to be solved.For example,taking grain as raw materials is unsustain...展开更多
With the development of photovoltaic(PV) industry, installing small-scale PV systems which are integrated into the buildings becomes popular. Therefore, it is important to make optimal investment decisions for investo...With the development of photovoltaic(PV) industry, installing small-scale PV systems which are integrated into the buildings becomes popular. Therefore, it is important to make optimal investment decisions for investors and consumers. This paper proposes an improved group decision-making method which integrates the cumulative prospect theory and Choquet integral for the investment options of small-scale PV systems. From the perspective of sustainability, the alternatives are evaluated by four criteria, including economic benefits, solar energy condition, carbon emissions and social benefits. Since the performances of criteria are given by decision makers as linguistic variables, the proposed method measures the criteria values by intuitionistic trapezoidal fuzzy numbers. Then the alternatives are evaluated and ranked to determine the optimal option. Finally, the proposed method is implemented in a case study to illustrate its feasibility and effectiveness.展开更多
This paper focuses on optimal voltage regulator(VR)planning to maximize the photovoltaic(PV)energy integration in distribution grids.To describe the amount of dynamic PV energy that can be integrated into the power sy...This paper focuses on optimal voltage regulator(VR)planning to maximize the photovoltaic(PV)energy integration in distribution grids.To describe the amount of dynamic PV energy that can be integrated into the power system,the concept of PV accommodation capability(PVAC)is introduced and modeled with optimization.Our proposed planning model is formulated as a Benders decomposition based bi-level stochastic optimization problem.In the upper-level problem,VR planning decisions and PVAC are determined via mixed integer linear programming(MILP)before considering uncertainty.Then in the lower-level problem,the feasibility of first-level results is checked by critical network constraints(e.g.voltage magnitude constraints and line capacity constraints)under uncertainties considered by time-varying loads and PV generations.In this paper,these uncertainties are represented in the form of operational scenarios,which are generated by the Gaussian copula theory and reduced by a well-studied backward-reduction algorithm.The modified IEEE 33-node distribution grid is utilized to verify the effectiveness of the proposed model.The results demonstrate that a PV energy integration can be significantly enhanced after optimal voltage regulator planning.展开更多
The existence of large and very large cities is a worldwide phenomenon. and has beena subject of much research and concern, The potentiai difficulty in tackling the issue isnow well understood. The number of large and...The existence of large and very large cities is a worldwide phenomenon. and has beena subject of much research and concern, The potentiai difficulty in tackling the issue isnow well understood. The number of large and very large cities is the greatest in China: there aretwenty-eight cities of 50,000 to one million population, and thirty of over one million, thelatter being regarded as meg-citics. There are nine of over two million population,amongst which Beijing has 10.4 million(1990)and Shanghai has 12.8 million(1990).Planning and research of the mega-cities tend to be locally specific and what is lackingseems to be an overview of the common and general issues in their development.展开更多
文摘After the collapse of Soviet Union, both Russia and China started to normalize their bilateral relations. Russia lost her geopolitical sphere and China started to broaden his influence in Asian-Pacific and Central Asian regions. The function of the Shanghai Cooperation Organization (SCO) is changing from symbolic to more substantial cooperation. It seems to be that the SCO plays multiple roles in Russia-China relations both in anti-terrorism and in energy economy. This paper is devoted to exploring the functions of the SCO and to seeing the problems in furthering Russia-China relations
文摘China has gained rich experience in the photovoltaic industry, and is capable of providing high-quality photovoltaic products and services at lower prices,
文摘The present and future international competitions, in the final analysis, are the talent competition. China is the world' s most populous nation, and it is the world' s most resource-rich countries of labor. Full development of human resources enhance the people' s level of education in general, which is today' s global trend of development of human resources in order to enhance the comprehensive national strength, but also the inevitable choice based on China' s basic national conditions of building a moderately prosperous society. It is faced with competition for talent era of knowledge economy, and it is in the face of economic globalization and integration trends in the face of China' s human resources situation. How to make heavy population burden into a country rich in human resources and how to play this advantage, how to create hundreds of millions of high-quality workers and technical personnel, innovative talents, education, especially higher education in China will play an increasingly important role.
文摘Land use in lake basins has an important impact on the sustainable development of society,economy and ecology.Based on the literature induction method,this paper systematically summarized the current status of land use research in lake basins from six aspects:temporal and spatial changes,effects,driving factors,optimization research,and the application of remote sensing techniques in lake land use research.Correspondingly,three problems were proposed:lack of refined research on land use changes in lake basins,imperfect theoretical research on lake land use optimization research,and weak land type extraction techniques based on remote sensing images.It is believed that the future research on lake land use should focus on strengthening the refinement of land use change research in lake basins,further improving the theoretical and practical research on land use optimization in lake basins based on a variety of related theories,and further improving the interpretation algorithms of remote sensing images.
文摘Mimosa diplotricha is an invasive perennial, scrambling, thorny, leguminous shrub of neotropical origin widely acknowledged as a major economic, agricultural and ecological burden in its introduced ranges. Although the plant is thought to have been present in Nigeria for well over two decades, its mode and time of introduction is uncertain. In spite of the continuing spread of, and the menace caused by M. diplotricha in Nigeria, no attempt has been made to map the distribution of the plant countrywide. Therefore, we conducted a countrywide survey between 2007 and 2009, sponsored by the Weed Science Society of Nigeria (WSSN) to determine the spread and status of Mimosa diplotricha in Nigeria. A further objective of this paper was to review literatures on Mimosa diplotricha in Nigeria and elsewhere to enable comparison. In this paper, we report on the spread, distribution and problems of Mimosa diplotricha in Nigeria based on the field monitoring surveys conducted. The distribution of this invasive plant in Nigeria has been mapped and is presented together with its ecology and problems being caused. Since the early 1990s, the weed has started to spread and invade many parts of the country causing significant damage to many natural and semi natural ecosystems. The different control options used by farmers to control Mimosa diplotricha in Nigeria are discussed. Based on the successful control of this invasive plant using the biocontrol agent, Heteropsylla spinulosa in countries such as Australia and Papua New Guinea (PNG), we discussed the biological control prospects for the management of Mimosa diplotricha in Nigeria. Such control attempts stands to benefit from international collaborations between Nigerian institutions and a host of others in Australia, PNG and/or Brazil. Finally three major causes for the massive and continuing spread of this weed in Nigeria are presented with recommendations for the Nigerian government and institutions to: 1) formulate policies and legislations regarding the control and management of invasive alien plant species which is currently nonexistent;2) enlighten the general public on the dangers of invasive alien plant species such as Mimosa diplotricha;and 3) initiate actions such as early detection and rapid response (EDRR) and biological control in order to prevent further spread of, and invasion by invasive plant species including Mimosa diplotricha.
基金Supported by Special Project for Guangxi Science and Technology Bases and Talent(GK AD16380088,GK AD17195040)Key Research and Development Plan of Guangxi(GK AB18221070)+1 种基金Major Science and Technology Project of Guangxi(GK AA17202029,G AA17204058-19,G AA17204058-20)Project of Guangxi Academy of Agricultural Sciences(2015YT87,2018YT29,2018YM05)
文摘Longtan pearl plum, as a new dominant fruit industry in Guangxi, has developed rapidly in recent years and become one of the major economic sources of fruit growers in Guangxi. It has a positive effect on promoting economic development and helping farmers to get out of poverty in Guangxi. But there is almost nothing to do with the processing and utilization. Taking the route of processing and utilization is an inevitable trend of development of Longtan pearl plum industry with the increase of the planting area and yield year by year. In this paper, based on the analysis of edible value of Longtan pearl plum, the development direction of processing and utilization of Longtan pearl plum was expounded, and some suggestions on the problems existing in the processing and utilization were put forward to provide reference for the processing and utilization of Longtan pearl plum.
文摘After the founding of New China, Sino-British economic and trade relations went throughups and downs. Since Chinas adoption of the policy of reform and opening to the outside,especially since the return of Hong Kong to China, bilateral economic and trade relationshave entered a new stage of sound expansion. The United Kingdom has become Chinasthird biggest trade partner in Europe while China has become the tenth biggest supplier ofBritains imported goods. The establishment of a comprehensive strategic Sino-Britishpartnership the extensive exchanges at all levels between the two countries, the obvious andgreat economic complementarities between the two countries and the smooth return of HongKong with the successful implementation of the one country, two systems policy in HongKong SAR, have opened broad prospects for the expansion of bilateral economic and traderelations between China and the U. K. However, at present, there still exist some problems,such as too small a proportion of bilateral trade in the two countries respective foreigntrade, too small an absolute amount of British investment in China, etc. With efforts by bothsides, the mutually beneficial economic and trade relations between China and the U. K. arebound to grow further in the future.
文摘In the published paper" Intercultural Language Education in China - Problems and Prospect" by Wang ge and Zhou zhen, it mainly discusses the problems of intercultural language education (ILE) in china from four facets: the perspectives of language planning; teach-ing methodology; material development and the teacher education. It also focuses on its function in an EFL curriculum concerning of raising intercultural awareness and training intercultural competence. In the process of instruction, students are supposed to be exposed to multicul-tural contents and various culture input. To achieve this goal, it is necessary to develop a well-tailored ILE curriculum and textbooks. This article is to review Wang and Zhou's points critically. Thus, it can evoke the awareness of course designers to attach the importance of ILT and call for relevant actions.
文摘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 phase.Some key technologies of biomass energy industry are coming to mature.China has issued relevant industrial standards laws and regulations,and has provided support in finance,loan,tax,etc.But China's biomass energy industry is faced with many problems which need to be solved.For example,taking grain as raw materials is unsustain...
基金Supported by the National Natural Science Foundation of China(71771085)
文摘With the development of photovoltaic(PV) industry, installing small-scale PV systems which are integrated into the buildings becomes popular. Therefore, it is important to make optimal investment decisions for investors and consumers. This paper proposes an improved group decision-making method which integrates the cumulative prospect theory and Choquet integral for the investment options of small-scale PV systems. From the perspective of sustainability, the alternatives are evaluated by four criteria, including economic benefits, solar energy condition, carbon emissions and social benefits. Since the performances of criteria are given by decision makers as linguistic variables, the proposed method measures the criteria values by intuitionistic trapezoidal fuzzy numbers. Then the alternatives are evaluated and ranked to determine the optimal option. Finally, the proposed method is implemented in a case study to illustrate its feasibility and effectiveness.
基金Natural Science Foundation of Guangdong(2019A1515111173)Young Talent Program(Dept of Education of Guangdong)(2018KQNCX223)+2 种基金High-level University Fund,G02236002National Natural Science Foundation of China(71971183)Hong Kong UGC PolyU Grant under Project P0038972.
文摘This paper focuses on optimal voltage regulator(VR)planning to maximize the photovoltaic(PV)energy integration in distribution grids.To describe the amount of dynamic PV energy that can be integrated into the power system,the concept of PV accommodation capability(PVAC)is introduced and modeled with optimization.Our proposed planning model is formulated as a Benders decomposition based bi-level stochastic optimization problem.In the upper-level problem,VR planning decisions and PVAC are determined via mixed integer linear programming(MILP)before considering uncertainty.Then in the lower-level problem,the feasibility of first-level results is checked by critical network constraints(e.g.voltage magnitude constraints and line capacity constraints)under uncertainties considered by time-varying loads and PV generations.In this paper,these uncertainties are represented in the form of operational scenarios,which are generated by the Gaussian copula theory and reduced by a well-studied backward-reduction algorithm.The modified IEEE 33-node distribution grid is utilized to verify the effectiveness of the proposed model.The results demonstrate that a PV energy integration can be significantly enhanced after optimal voltage regulator planning.
文摘The existence of large and very large cities is a worldwide phenomenon. and has beena subject of much research and concern, The potentiai difficulty in tackling the issue isnow well understood. The number of large and very large cities is the greatest in China: there aretwenty-eight cities of 50,000 to one million population, and thirty of over one million, thelatter being regarded as meg-citics. There are nine of over two million population,amongst which Beijing has 10.4 million(1990)and Shanghai has 12.8 million(1990).Planning and research of the mega-cities tend to be locally specific and what is lackingseems to be an overview of the common and general issues in their development.