Guangdong Supply and Marketing Cooperative serves as an important institution for the“Three Rural Areas”in the Guangdong-Hong Kong-Macao Greater Bay Area.Its digital transformation and optimization serve as powerful...Guangdong Supply and Marketing Cooperative serves as an important institution for the“Three Rural Areas”in the Guangdong-Hong Kong-Macao Greater Bay Area.Its digital transformation and optimization serve as powerful supports for rural revitalization.This paper systematically reviews the main practices and effectiveness of the digital transformation within the Guangdong Supply and Marketing Cooperative.It also analyzes the current development dilemmas faced in the construction of digital supply and marketing.Additionally,it proposes targeted solutions,including building a big data resource base,optimizing the digital supply and marketing cloud platform,developing digital publictype agricultural social service applications,establishing a new model of rural e-commerce,enhancing the traceability management system for agricultural products,and strengthening the construction of the digital human resources system.These proposals aim to further promote the strategy for revitalizing the countryside.展开更多
This paper firstly described current development situation of China's rural circulation system. In the process of accelerating modernization,the supply and marketing cooperative is always an essential force,but th...This paper firstly described current development situation of China's rural circulation system. In the process of accelerating modernization,the supply and marketing cooperative is always an essential force,but the gap between urban and rural circulation system is still expanding. On the basis of current development situation,it analyzed functions of supply and marketing cooperatives in rural logistics system. Finally,it came up with recommendations for improving China's rural circulation system. In the new period,it is recommended to bring into play advantages of supply and marketing cooperatives,expand the coverage,gradually promote industry upgrade of renewable resource recycling,and constantly strengthen functions of supply and marketing cooperatives in building the rural modern circulation system,to build supply and marketing cooperatives into new forces and comprehensive platform for farmers' production and living services.展开更多
Agricultural social service is an important field in the development of modern agriculture. At present,agricultural social service should be based on the extension of the agricultural industrial chain and value chain....Agricultural social service is an important field in the development of modern agriculture. At present,agricultural social service should be based on the extension of the agricultural industrial chain and value chain. The supply and marketing system has important opportunity to participate in social services. It should be based on deep reform of supply and marketing system,rural industrial poverty alleviation,sustainable agricultural ecological development,development of farmers' cooperative organizations,and increase of organization efficiency. It is recommended to undertake works in construction of platform of supply of agricultural products,commercialization of agricultural technology services,scale development of community-supported agriculture,and market based agricultural social capital. Through improving the team system of supply and marketing system,it is recommended to create platform-based flattening environment and create cooperative ecology in PPP mode to guarantee.展开更多
Based on the overview of the role played by farmers' co-operatives in developing rural economy and existing problems,the thesis has introduced the factors which influence the development of farmers' co-operati...Based on the overview of the role played by farmers' co-operatives in developing rural economy and existing problems,the thesis has introduced the factors which influence the development of farmers' co-operatives including five aspects,namely conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,market expectancy and government support.By analyzing typical cases of three co-operatives in Guangxi(Heng County Dadi Growing Co-operatives,talents-leading share-holding co-operatives;Long'an County Guixiniu Co-operatives,co-operatives led by leading-enterprise;Nanning City Tanluo Town Jinguang Fruits and Potatoes Co-operatives,co-operatives led by leading-enterprise),the way to develop farmers' co-operatives by dint of the external capital has been discussed.The results demonstrate that conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,excellent market expectancy and government support,are conducive to absorbing external capital.Under China's existing economic conditions,the government should normalize the use and allocation procedure of program fund.展开更多
Renewable energy,such as wind and solar energy,may vary signifi cantly over time and locations depending on the weather and the climate conditions.This leads to the supply uncertainty in the electricity(power) market ...Renewable energy,such as wind and solar energy,may vary signifi cantly over time and locations depending on the weather and the climate conditions.This leads to the supply uncertainty in the electricity(power) market with renewable energy integrated to power grid.In this paper,electricity in the market is classified into two types:stablesupply electricity(SSE) and unstablesupply electricity(USE).We investigate the investment and pricing strategies under the electricity supply uncertainty in wholesale and retail electricity market.In particular,our model combines the wholesale and retail market and capture the dominant players,i.e.,consumers,power plant(power operator),and electricity supplier.To derive the market behaviors of these players,we formulate the market decision problems as a multistage Stackelberg game.By solving the game model,we obtain the optimal,with closedform,wholesale investment and retail pricing strategy for the operator.We also obtain the energy supplier's best price mechanism numerically under certain assumption.We fi nd the price of SSE being about 1.4 times higher than that of USE will benefi t energy supplieroptimally,under which power plant's optimal strategy of investing is to purchase USE about 4.5 times much more than SSE.展开更多
This paper studies firms’ innovation behavior in a supply chain where two firms first invest to reduce component’ cost according to different innovation modes (non-cooperative innovation, sequential innovation, and ...This paper studies firms’ innovation behavior in a supply chain where two firms first invest to reduce component’ cost according to different innovation modes (non-cooperative innovation, sequential innovation, and cooperative innovation) and then decide the prices according to different market powers (Supplier-Stackelberg, Manufacturer-Stackelberg, and Nash). We find that both the supplier and the manufacturer make more innovation efforts and profits under sequential innovation than under non-cooperative innovation when the market power is any one of three structures. Moreover, the firm prefers to invest as the follower in sequential innovation. We also show that the firms are easy to achieve cooperative innovation under symmetrical power market structure than asymmetrical power market structure. By using a concept named innovation-desirability-index that measures a firm’s desire to innovate in the supply chain, we show that it is optimal for a firm in the chain to cooperate with such a firm whose market power is close to his own if the innovation-desirability-index is higher, otherwise with such a firm whose market power is lower to his own.展开更多
In the main trend of gradually improving socialist market economy and establishing public service type government,market supply of rural public sports service is necessary. On the basis of unique characteristics of Ch...In the main trend of gradually improving socialist market economy and establishing public service type government,market supply of rural public sports service is necessary. On the basis of unique characteristics of China's rural society and market experience of domestic and foreign public service,market supply methods were discussed about rural public sports service. However,there are certain factors restricting market supply in this process. On the basis of the analysis,it came up with several optimization measures for market supply of rural public sports service.展开更多
Started with the discussions on the value orientation of urban water supply industry marketization,the article points out that the current urban water supply industry marketization reform is inconsistent with the goal...Started with the discussions on the value orientation of urban water supply industry marketization,the article points out that the current urban water supply industry marketization reform is inconsistent with the goal of public water service equalization to some extent.The article also analyzes the problems emerged in urban water supply industry marketization reform and various rea-sons in view of efficiency and fairness.An efficiency and fairness oriented management model is built in this article to illustrate how the government should conciliate interests of various communities involved in the process of marketization reform of the urban water supply industry so as to actualize the coordination of efficiency and fairness.At the end,an assumption on urban water price is put forward to help achieve the public water service equalization.展开更多
This study was aimed to analyze teff (Eragrostis tef) market chain in south west Shoa zone with objective of factors affecting teff market supply using two stage ordinary least square approaches. The majority of Ethio...This study was aimed to analyze teff (Eragrostis tef) market chain in south west Shoa zone with objective of factors affecting teff market supply using two stage ordinary least square approaches. The majority of Ethiopia’s population earns its livelihood primarily from agriculture. Cereals teff is the first in Ethiopia area coverage and production. Teff (Eragrostis tef) is a major staple food crop in Ethiopia. Both primary and secondary data were used in this study. Primary data was collected from 138 sampled farmers and 38 traders from both districts by using semi-structured interview. The OLS (ordinary least square) model results showed that seven explanatory variables significantly affected the quantity of teff supplied to the market supplied by smallholder producers. Age, education level and current market price were negatively and significantly affecting teff market supply. Distance to the nearest market, farm size, perception and quantity produced were positively and significantly influencing marketed supply of teff. Policy implications that were to take place highly recommendation those are relevant to improve teff marketing system in the study area which indicated production and market orientation were set based on the significant variables and raised problems by the stakeholders. To improve market supply of teff in the study area resolving the prevailing production problems deems a necessary condition.展开更多
Consumers and developers are the market transaction subjects which drive the development of building energy efficiency market. High energy prices, unreasonable heating system, information asymmetry of building energy ...Consumers and developers are the market transaction subjects which drive the development of building energy efficiency market. High energy prices, unreasonable heating system, information asymmetry of building energy suppress demand of energy efficiency construction; high technical risk and construction cost, nonstandard market restrict the supply of energy efficiency construction. To promote the development of building energy efficiency, we must set up effective incentive policies for both sides of the market transaction, improve the supervisory system, promote the technological progress, build the information sharing platform, so as to achieve the purpose of cultivating and improving the building energy efficiency market system, regulating the behavior of supply and demand subject, building the mutually beneficial and cooperative partnership, and realizing the balance of interests.展开更多
The quality of pharmaceutical products plays a crucial role in healthcare systems such as hospitals for better patient services. Drug Supply Chain Management requires approaches to uncertainty and risk consideration. ...The quality of pharmaceutical products plays a crucial role in healthcare systems such as hospitals for better patient services. Drug Supply Chain Management requires approaches to uncertainty and risk consideration. This study is a comprehensive multi-objective mathematical model considering the uncertainties and potential reserves in supply and medicine. The proposed model includes three general objective functions that minimize total production costs, including the costs of transportation, maintenance, breakdown, collection, and disposal of waste. The model also maximizes the quality of potential storage. The results show the proposed method has a high quality to solve the model and leads to the optimization of the results to provide the drug supply chain for the proposed example. We have identified three important risks and uncertainties in addressing drug supply planning: the indefinite duration of the licensing process, the risk of a forced brand change, and indefinite repayment levels that lead to varied demand diversification. The results of comparison with other multi-objective optimization methods in existing articles also show better performance of the proposed model. A significant cost reduction results from implementing our model instead of using the over-storage role to estimate the volume of active drug elements, as seen in today’s industry.展开更多
With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business mode...With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business model and capital input,some people have been exploring new regional markets for fresh produce and seeking improvement in produce quality,standards and展开更多
The purpose of this study is to analyze the characteristics of the spatial distribution and change trend of the marketing level of stateowned land supply so as to provide policy recommendations. Method of spatial auto...The purpose of this study is to analyze the characteristics of the spatial distribution and change trend of the marketing level of stateowned land supply so as to provide policy recommendations. Method of spatial autocorrelation analysis is employed. The results indicate that the spatial layout of the land supply marketing level is generally dispersed,but it does assemble in some specific area. The correlation between the marketing level of state-owned land supply and the economic development is not statistically significant. But their relations fluctuate obviously. The overall marketing level of state-owned land supply is increasing and spatially concentrated. The expansion rate of marketing has decreased first and then increased and stabilized now. The high-value cluster center of marketing level of state-owned land supply exists all over the country; however the existence probability of the cluster is bigger in undeveloped areas. It is concluded that spatial autocorrelation analysis is a good method to quantitatively analyze the spatial variation of marketing level of state-owned land supply in China. To grasp the spatial and temporal variations of the marketing level of state-owned land supply is also good to enhance running of the state-owned land market.展开更多
This paper took the buyer-biased electronic market as an example, where multiple suppliers selling short-life-cycle products are bidding for an order from a powerful buyer with stochastic customer demand. It used a si...This paper took the buyer-biased electronic market as an example, where multiple suppliers selling short-life-cycle products are bidding for an order from a powerful buyer with stochastic customer demand. It used a single period newsvendor model to analyze the decision of supplied and buyers to do or not do business online. The results suggest that lack of Incentive is the key factor of B2B electronic markets failure. At the same time, it designed a revenue sharing contract to coordinate the E-supply chain in order to prevent failure of E-market.展开更多
Supply chain traceability is key to reduce food safety risks,since it allows problems to be traced to their sources. Moreover,it allows regulatory agencies to understand where risk is introduced into the supply chain,...Supply chain traceability is key to reduce food safety risks,since it allows problems to be traced to their sources. Moreover,it allows regulatory agencies to understand where risk is introduced into the supply chain,and offers a major disincentive for upstream agricultural businesses engaging in economically motivated adulteration. This paper focuses on the aquatic supply chain in China,and seeks to understand the adoption of traceability both through an analytical model,and empirical analysis based on data collected through an extensive (largest ever) field survey of Chinese aquatic wholesale markets. The field survey includes 76 managers and 753 vendors,covering all aquatic wholesale markets in Zhejiang and Hunan provinces. The analytical and empirical results suggest that the adoption of traceability among wholesale market vendors is significantly associated with inspection intensity,their individual history of food safety problems,and their risk awareness. The effect of inspection intensity on traceability adoption is stronger in markets which are privately owned than in markets with state/collective ownership. The analysis offers insights into the current state of traceability in China. More importantly,it suggests several hypothesized factors that might affect the adoption of traceability and could be leveraged by regulatory organizations to improve it.展开更多
As a kind of clean energy which creates little carbon dioxide, natural gas will play a key role in the process of achieving “Peak Carbon Dioxide Emission” and “Carbon Neutrality”. The Long-range Energy Alternative...As a kind of clean energy which creates little carbon dioxide, natural gas will play a key role in the process of achieving “Peak Carbon Dioxide Emission” and “Carbon Neutrality”. The Long-range Energy Alternatives Planning System(LEAP) model was improved by using new parameters including comprehensive energy efficiency and terminal effective energy consumption. The Back Propagation(BP) Neural Network–LEAP model was proposed to predict key data such as total primary energy consumption, energy mix, carbon emissions from energy consumption, and natural gas consumption in China. Moreover, natural gas production in China was forecasted by the production composition method. Finally, based on the forecast results of natural gas supply and demand, suggestions were put forward on the development of China’s natural gas industry under the background of “Dual Carbon Targets”. The research results indicate that under the background of carbon peak and carbon neutrality, China’s primary energy consumption will peak(59.4×10^(8)tce) around 2035, carbon emissions from energy consumption will peak(103.4×10^(8)t) by 2025, and natural gas consumption will peak(6100×10^(8)m^(3)) around 2040, of which the largest increase will be contributed by the power sector and industrial sector. China’s peak natural gas production is about(2800–3400)×10^(8)m^(3), including(2100–2300)×10^(8)m^(3)conventional gas(including tight gas),(600–1050)×10^(8)m^(3)shale gas, and(150–220)×10^(8)m^(3)coalbed methane. Under the background of carbon peak and carbon neutrality, the natural gas consumption and production of China will further increase, showing a great potential of the natural gas industry.展开更多
With the rapid increase in farmers' income and the rapid development of tourism,the tourism demand of farmers is increasingly growing,but the development of tourism market for farmers has not been given much atten...With the rapid increase in farmers' income and the rapid development of tourism,the tourism demand of farmers is increasingly growing,but the development of tourism market for farmers has not been given much attention. This paper summarized the overall situation of development of the farmer tourism,analyzed the consumption characteristics and supply characteristics of the farmer tourism in depth,and discussed the development potential of the farmer tourism. On the basis of discussion and analysis,it came up with recommendations including attaching greater importance to the farmer tourism market,developing marketable products,changing the traditional concept of consumption and enhancing tourism promotion activities,in the hope that both the government and enterprises pay more attention to the farmer tourism market.展开更多
China's domestic oil production has lagged the growth in domestic oil consumption since the beginning of the 21st century,leading to a growing reliance on imports.In response,the Chinese government has introduced ...China's domestic oil production has lagged the growth in domestic oil consumption since the beginning of the 21st century,leading to a growing reliance on imports.In response,the Chinese government has introduced a number of policies,including import license constraints,to support domestic suppliers.In an effort to measure the economic impact of these policies we develop a short-run equilibrium model of China's wholesale oil and gas market at the provincial scale.We construct counterfactual scenarios that suggest that relaxing policies that prioritize domestic production in 2016,when the average price of Chinese oil imports was US$42 per barrel(bbl),could have increased China's import demand by 0.29 million barrels per day(MMbbl/d).This results in a substitution of 9%of China’s domestic production in 2016,and a reduction of US$2.8 billion in crude supply costs including transportation as the imported oil has more direct access to the country’s pipeline network,compared to the displaced domestic production.In addition,rising import prices since mid-2017 may provide a window of opportunity for Chinese policymakers to proceed with further deregulation of the domestic oil sector,as the short-term impact on domestic producers is reduced.展开更多
基金Guangdong Province Philosophy and Social Sciences Co-Construction Project(GD23XGL051)Guangdong University of Science and Technology(GKY-2023KYZDW-2)。
文摘Guangdong Supply and Marketing Cooperative serves as an important institution for the“Three Rural Areas”in the Guangdong-Hong Kong-Macao Greater Bay Area.Its digital transformation and optimization serve as powerful supports for rural revitalization.This paper systematically reviews the main practices and effectiveness of the digital transformation within the Guangdong Supply and Marketing Cooperative.It also analyzes the current development dilemmas faced in the construction of digital supply and marketing.Additionally,it proposes targeted solutions,including building a big data resource base,optimizing the digital supply and marketing cloud platform,developing digital publictype agricultural social service applications,establishing a new model of rural e-commerce,enhancing the traceability management system for agricultural products,and strengthening the construction of the digital human resources system.These proposals aim to further promote the strategy for revitalizing the countryside.
文摘This paper firstly described current development situation of China's rural circulation system. In the process of accelerating modernization,the supply and marketing cooperative is always an essential force,but the gap between urban and rural circulation system is still expanding. On the basis of current development situation,it analyzed functions of supply and marketing cooperatives in rural logistics system. Finally,it came up with recommendations for improving China's rural circulation system. In the new period,it is recommended to bring into play advantages of supply and marketing cooperatives,expand the coverage,gradually promote industry upgrade of renewable resource recycling,and constantly strengthen functions of supply and marketing cooperatives in building the rural modern circulation system,to build supply and marketing cooperatives into new forces and comprehensive platform for farmers' production and living services.
基金Supported by Special Fund for Agro-scientific Research in the Public Interest(201303107)Innovation Project of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-2016-AII)Project of Asian Development Bank(ADB TA8780-PRC)
文摘Agricultural social service is an important field in the development of modern agriculture. At present,agricultural social service should be based on the extension of the agricultural industrial chain and value chain. The supply and marketing system has important opportunity to participate in social services. It should be based on deep reform of supply and marketing system,rural industrial poverty alleviation,sustainable agricultural ecological development,development of farmers' cooperative organizations,and increase of organization efficiency. It is recommended to undertake works in construction of platform of supply of agricultural products,commercialization of agricultural technology services,scale development of community-supported agriculture,and market based agricultural social capital. Through improving the team system of supply and marketing system,it is recommended to create platform-based flattening environment and create cooperative ecology in PPP mode to guarantee.
文摘Based on the overview of the role played by farmers' co-operatives in developing rural economy and existing problems,the thesis has introduced the factors which influence the development of farmers' co-operatives including five aspects,namely conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,market expectancy and government support.By analyzing typical cases of three co-operatives in Guangxi(Heng County Dadi Growing Co-operatives,talents-leading share-holding co-operatives;Long'an County Guixiniu Co-operatives,co-operatives led by leading-enterprise;Nanning City Tanluo Town Jinguang Fruits and Potatoes Co-operatives,co-operatives led by leading-enterprise),the way to develop farmers' co-operatives by dint of the external capital has been discussed.The results demonstrate that conditions of scale economy,popularization and application of agricultural production technology,comparative advantage,excellent market expectancy and government support,are conducive to absorbing external capital.Under China's existing economic conditions,the government should normalize the use and allocation procedure of program fund.
基金supported in part by the National Natural Science Foundation of China(NSFC)No.61372116 and NSFC No.61201202 and NSFC No.61320001the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions under Grant YETP0110
文摘Renewable energy,such as wind and solar energy,may vary signifi cantly over time and locations depending on the weather and the climate conditions.This leads to the supply uncertainty in the electricity(power) market with renewable energy integrated to power grid.In this paper,electricity in the market is classified into two types:stablesupply electricity(SSE) and unstablesupply electricity(USE).We investigate the investment and pricing strategies under the electricity supply uncertainty in wholesale and retail electricity market.In particular,our model combines the wholesale and retail market and capture the dominant players,i.e.,consumers,power plant(power operator),and electricity supplier.To derive the market behaviors of these players,we formulate the market decision problems as a multistage Stackelberg game.By solving the game model,we obtain the optimal,with closedform,wholesale investment and retail pricing strategy for the operator.We also obtain the energy supplier's best price mechanism numerically under certain assumption.We fi nd the price of SSE being about 1.4 times higher than that of USE will benefi t energy supplieroptimally,under which power plant's optimal strategy of investing is to purchase USE about 4.5 times much more than SSE.
文摘This paper studies firms’ innovation behavior in a supply chain where two firms first invest to reduce component’ cost according to different innovation modes (non-cooperative innovation, sequential innovation, and cooperative innovation) and then decide the prices according to different market powers (Supplier-Stackelberg, Manufacturer-Stackelberg, and Nash). We find that both the supplier and the manufacturer make more innovation efforts and profits under sequential innovation than under non-cooperative innovation when the market power is any one of three structures. Moreover, the firm prefers to invest as the follower in sequential innovation. We also show that the firms are easy to achieve cooperative innovation under symmetrical power market structure than asymmetrical power market structure. By using a concept named innovation-desirability-index that measures a firm’s desire to innovate in the supply chain, we show that it is optimal for a firm in the chain to cooperate with such a firm whose market power is close to his own if the innovation-desirability-index is higher, otherwise with such a firm whose market power is lower to his own.
文摘In the main trend of gradually improving socialist market economy and establishing public service type government,market supply of rural public sports service is necessary. On the basis of unique characteristics of China's rural society and market experience of domestic and foreign public service,market supply methods were discussed about rural public sports service. However,there are certain factors restricting market supply in this process. On the basis of the analysis,it came up with several optimization measures for market supply of rural public sports service.
文摘Started with the discussions on the value orientation of urban water supply industry marketization,the article points out that the current urban water supply industry marketization reform is inconsistent with the goal of public water service equalization to some extent.The article also analyzes the problems emerged in urban water supply industry marketization reform and various rea-sons in view of efficiency and fairness.An efficiency and fairness oriented management model is built in this article to illustrate how the government should conciliate interests of various communities involved in the process of marketization reform of the urban water supply industry so as to actualize the coordination of efficiency and fairness.At the end,an assumption on urban water price is put forward to help achieve the public water service equalization.
文摘This study was aimed to analyze teff (Eragrostis tef) market chain in south west Shoa zone with objective of factors affecting teff market supply using two stage ordinary least square approaches. The majority of Ethiopia’s population earns its livelihood primarily from agriculture. Cereals teff is the first in Ethiopia area coverage and production. Teff (Eragrostis tef) is a major staple food crop in Ethiopia. Both primary and secondary data were used in this study. Primary data was collected from 138 sampled farmers and 38 traders from both districts by using semi-structured interview. The OLS (ordinary least square) model results showed that seven explanatory variables significantly affected the quantity of teff supplied to the market supplied by smallholder producers. Age, education level and current market price were negatively and significantly affecting teff market supply. Distance to the nearest market, farm size, perception and quantity produced were positively and significantly influencing marketed supply of teff. Policy implications that were to take place highly recommendation those are relevant to improve teff marketing system in the study area which indicated production and market orientation were set based on the significant variables and raised problems by the stakeholders. To improve market supply of teff in the study area resolving the prevailing production problems deems a necessary condition.
基金supported by Nature Science Foundation of China (Grant No. 71171141)Soft Science Research Project of MOE (Grant No. 2013-R1-14)Social Science Planning Project in Tianjin City (Grant No. TJGLHQ1403)
文摘Consumers and developers are the market transaction subjects which drive the development of building energy efficiency market. High energy prices, unreasonable heating system, information asymmetry of building energy suppress demand of energy efficiency construction; high technical risk and construction cost, nonstandard market restrict the supply of energy efficiency construction. To promote the development of building energy efficiency, we must set up effective incentive policies for both sides of the market transaction, improve the supervisory system, promote the technological progress, build the information sharing platform, so as to achieve the purpose of cultivating and improving the building energy efficiency market system, regulating the behavior of supply and demand subject, building the mutually beneficial and cooperative partnership, and realizing the balance of interests.
文摘The quality of pharmaceutical products plays a crucial role in healthcare systems such as hospitals for better patient services. Drug Supply Chain Management requires approaches to uncertainty and risk consideration. This study is a comprehensive multi-objective mathematical model considering the uncertainties and potential reserves in supply and medicine. The proposed model includes three general objective functions that minimize total production costs, including the costs of transportation, maintenance, breakdown, collection, and disposal of waste. The model also maximizes the quality of potential storage. The results show the proposed method has a high quality to solve the model and leads to the optimization of the results to provide the drug supply chain for the proposed example. We have identified three important risks and uncertainties in addressing drug supply planning: the indefinite duration of the licensing process, the risk of a forced brand change, and indefinite repayment levels that lead to varied demand diversification. The results of comparison with other multi-objective optimization methods in existing articles also show better performance of the proposed model. A significant cost reduction results from implementing our model instead of using the over-storage role to estimate the volume of active drug elements, as seen in today’s industry.
文摘With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business model and capital input,some people have been exploring new regional markets for fresh produce and seeking improvement in produce quality,standards and
基金Supported by Chongqing Key Humanities and Social Sciences Base--Research Center of Rural Economics and Management of Southwest University
文摘The purpose of this study is to analyze the characteristics of the spatial distribution and change trend of the marketing level of stateowned land supply so as to provide policy recommendations. Method of spatial autocorrelation analysis is employed. The results indicate that the spatial layout of the land supply marketing level is generally dispersed,but it does assemble in some specific area. The correlation between the marketing level of state-owned land supply and the economic development is not statistically significant. But their relations fluctuate obviously. The overall marketing level of state-owned land supply is increasing and spatially concentrated. The expansion rate of marketing has decreased first and then increased and stabilized now. The high-value cluster center of marketing level of state-owned land supply exists all over the country; however the existence probability of the cluster is bigger in undeveloped areas. It is concluded that spatial autocorrelation analysis is a good method to quantitatively analyze the spatial variation of marketing level of state-owned land supply in China. To grasp the spatial and temporal variations of the marketing level of state-owned land supply is also good to enhance running of the state-owned land market.
文摘This paper took the buyer-biased electronic market as an example, where multiple suppliers selling short-life-cycle products are bidding for an order from a powerful buyer with stochastic customer demand. It used a single period newsvendor model to analyze the decision of supplied and buyers to do or not do business online. The results suggest that lack of Incentive is the key factor of B2B electronic markets failure. At the same time, it designed a revenue sharing contract to coordinate the E-supply chain in order to prevent failure of E-market.
基金The research was funded by the Fundamental Research Funds for the Central Universities,China and ZJU-IFPRI Center for International Development Studiesthe National Planning Office of Philosophy and Social Science of China (19ZDA106).
文摘Supply chain traceability is key to reduce food safety risks,since it allows problems to be traced to their sources. Moreover,it allows regulatory agencies to understand where risk is introduced into the supply chain,and offers a major disincentive for upstream agricultural businesses engaging in economically motivated adulteration. This paper focuses on the aquatic supply chain in China,and seeks to understand the adoption of traceability both through an analytical model,and empirical analysis based on data collected through an extensive (largest ever) field survey of Chinese aquatic wholesale markets. The field survey includes 76 managers and 753 vendors,covering all aquatic wholesale markets in Zhejiang and Hunan provinces. The analytical and empirical results suggest that the adoption of traceability among wholesale market vendors is significantly associated with inspection intensity,their individual history of food safety problems,and their risk awareness. The effect of inspection intensity on traceability adoption is stronger in markets which are privately owned than in markets with state/collective ownership. The analysis offers insights into the current state of traceability in China. More importantly,it suggests several hypothesized factors that might affect the adoption of traceability and could be leveraged by regulatory organizations to improve it.
基金Supported by Project of Science and Technology of PetroChina (2021DJ17,2021DJ21)。
文摘As a kind of clean energy which creates little carbon dioxide, natural gas will play a key role in the process of achieving “Peak Carbon Dioxide Emission” and “Carbon Neutrality”. The Long-range Energy Alternatives Planning System(LEAP) model was improved by using new parameters including comprehensive energy efficiency and terminal effective energy consumption. The Back Propagation(BP) Neural Network–LEAP model was proposed to predict key data such as total primary energy consumption, energy mix, carbon emissions from energy consumption, and natural gas consumption in China. Moreover, natural gas production in China was forecasted by the production composition method. Finally, based on the forecast results of natural gas supply and demand, suggestions were put forward on the development of China’s natural gas industry under the background of “Dual Carbon Targets”. The research results indicate that under the background of carbon peak and carbon neutrality, China’s primary energy consumption will peak(59.4×10^(8)tce) around 2035, carbon emissions from energy consumption will peak(103.4×10^(8)t) by 2025, and natural gas consumption will peak(6100×10^(8)m^(3)) around 2040, of which the largest increase will be contributed by the power sector and industrial sector. China’s peak natural gas production is about(2800–3400)×10^(8)m^(3), including(2100–2300)×10^(8)m^(3)conventional gas(including tight gas),(600–1050)×10^(8)m^(3)shale gas, and(150–220)×10^(8)m^(3)coalbed methane. Under the background of carbon peak and carbon neutrality, the natural gas consumption and production of China will further increase, showing a great potential of the natural gas industry.
基金Supported by Scientific Research Foundation of Liaoning Provincial Department of Education(2016FRPY02)
文摘With the rapid increase in farmers' income and the rapid development of tourism,the tourism demand of farmers is increasingly growing,but the development of tourism market for farmers has not been given much attention. This paper summarized the overall situation of development of the farmer tourism,analyzed the consumption characteristics and supply characteristics of the farmer tourism in depth,and discussed the development potential of the farmer tourism. On the basis of discussion and analysis,it came up with recommendations including attaching greater importance to the farmer tourism market,developing marketable products,changing the traditional concept of consumption and enhancing tourism promotion activities,in the hope that both the government and enterprises pay more attention to the farmer tourism market.
文摘China's domestic oil production has lagged the growth in domestic oil consumption since the beginning of the 21st century,leading to a growing reliance on imports.In response,the Chinese government has introduced a number of policies,including import license constraints,to support domestic suppliers.In an effort to measure the economic impact of these policies we develop a short-run equilibrium model of China's wholesale oil and gas market at the provincial scale.We construct counterfactual scenarios that suggest that relaxing policies that prioritize domestic production in 2016,when the average price of Chinese oil imports was US$42 per barrel(bbl),could have increased China's import demand by 0.29 million barrels per day(MMbbl/d).This results in a substitution of 9%of China’s domestic production in 2016,and a reduction of US$2.8 billion in crude supply costs including transportation as the imported oil has more direct access to the country’s pipeline network,compared to the displaced domestic production.In addition,rising import prices since mid-2017 may provide a window of opportunity for Chinese policymakers to proceed with further deregulation of the domestic oil sector,as the short-term impact on domestic producers is reduced.