This is an exploratory study on mental accounting and food budgeting of agricultural households,in which we assumed that agricultural households may have a mental account for consumption of their self-produced food.Ac...This is an exploratory study on mental accounting and food budgeting of agricultural households,in which we assumed that agricultural households may have a mental account for consumption of their self-produced food.Accordingly,they may reserve a certain quantity of self-produced food as a set budget for own consumption,implying that they may keep on consuming their own produce until they have consumed the quantity set for the mental budget.By making the mental accounting assumption,we hypothesized that the consumption of self-produced food is independent of market price.Also,we hypothesized that the consumption of self-produced food is increasing in the quantity of production if production is lower than the set budget,and independent of the quantity of production if production exceeds the set budget.By applying a double-log demand model and using survey data from six poor rural counties in China,we tested these hypotheses for five food items,which are rice,flour,potatoes,pork,and eggs.We found that the hypothesis of no significant effect of price holds for flour,potatoes,and pork if production is lower than the set budget,and for rice,pork,and eggs if production is higher than the set budget.Production has a significant positive effect on consumption of selfproduced food but with a much greater influence when production is lower than the set budget for all five food items.These findings partly support our assumption of mental accounting of self-produced food.Limitations,policy implications,and possible future studies are discussed.展开更多
The need to have naval units ever faster pushed the ship design to design hull shapes with increasingly higher performance thanks to the use of lightweight materials such as aluminum, and more powerful engines, etc., ...The need to have naval units ever faster pushed the ship design to design hull shapes with increasingly higher performance thanks to the use of lightweight materials such as aluminum, and more powerful engines, etc., but without substantially modifying the traditional forms of hull. The hull patented Monotricat high hydrodynamic efficiency and energy saving it represents an evolution of the traditional architectures of the hulls, as its shape is adapted to recover wave formation engendered from the bow and sprays associated with it so as to reduce the resistance to the benefit of the speed, and navigating in displacement at speeds of planing hulls with an efficiency of about 20%. The patented hull Monotricat represents the overcoming of distinction between displacement and planing hulls, because, unlike previous solutions, the hull conventionally called Monotricat is the first displacement hull that can navigate at both displacement and planning speeds, with a resistance curve almost straight, maintaining the characteristics of a displacement hull, since it combines the characteristics of displacement and planning hull. It presents an innovative architecture that could be defined as a hybrid between a monohull and catamaran, navigating on spray self-produced. The combination of these three types of naval hulls allows it to ensure： safety, comfort navigation, best seakeeping and maneuverability in restricted waters, stability, reduction of resistance to motion, cost management, regularity on the routes even in adverse weather-sea. These characteristics of the hull have been studied, tested and validated by leading research institutes and universities with more ameliorative results in each subsequent experimentation, reported in the present work, which demonstrated a greater hydrodynamic efficiency compared to conventional hulls of 20%.展开更多
Self-producing marketing is a kind of classical and effective marketing measure;recently it has drawn more and more attention and won wider application.This paper will start from Britain's prince William's wed...Self-producing marketing is a kind of classical and effective marketing measure;recently it has drawn more and more attention and won wider application.This paper will start from Britain's prince William's wedding on April 29th,2011 and analyze the self-producing marketing in marriage.Moreover,adjusted to the current marketing environment,the paper will forecast the development trend of self-producing.展开更多
基金funded by the National Natural Science Foundation of China(NSFC)(71861147003 and 71661147001)the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-2016-AII)。
文摘This is an exploratory study on mental accounting and food budgeting of agricultural households,in which we assumed that agricultural households may have a mental account for consumption of their self-produced food.Accordingly,they may reserve a certain quantity of self-produced food as a set budget for own consumption,implying that they may keep on consuming their own produce until they have consumed the quantity set for the mental budget.By making the mental accounting assumption,we hypothesized that the consumption of self-produced food is independent of market price.Also,we hypothesized that the consumption of self-produced food is increasing in the quantity of production if production is lower than the set budget,and independent of the quantity of production if production exceeds the set budget.By applying a double-log demand model and using survey data from six poor rural counties in China,we tested these hypotheses for five food items,which are rice,flour,potatoes,pork,and eggs.We found that the hypothesis of no significant effect of price holds for flour,potatoes,and pork if production is lower than the set budget,and for rice,pork,and eggs if production is higher than the set budget.Production has a significant positive effect on consumption of selfproduced food but with a much greater influence when production is lower than the set budget for all five food items.These findings partly support our assumption of mental accounting of self-produced food.Limitations,policy implications,and possible future studies are discussed.
文摘The need to have naval units ever faster pushed the ship design to design hull shapes with increasingly higher performance thanks to the use of lightweight materials such as aluminum, and more powerful engines, etc., but without substantially modifying the traditional forms of hull. The hull patented Monotricat high hydrodynamic efficiency and energy saving it represents an evolution of the traditional architectures of the hulls, as its shape is adapted to recover wave formation engendered from the bow and sprays associated with it so as to reduce the resistance to the benefit of the speed, and navigating in displacement at speeds of planing hulls with an efficiency of about 20%. The patented hull Monotricat represents the overcoming of distinction between displacement and planing hulls, because, unlike previous solutions, the hull conventionally called Monotricat is the first displacement hull that can navigate at both displacement and planning speeds, with a resistance curve almost straight, maintaining the characteristics of a displacement hull, since it combines the characteristics of displacement and planning hull. It presents an innovative architecture that could be defined as a hybrid between a monohull and catamaran, navigating on spray self-produced. The combination of these three types of naval hulls allows it to ensure： safety, comfort navigation, best seakeeping and maneuverability in restricted waters, stability, reduction of resistance to motion, cost management, regularity on the routes even in adverse weather-sea. These characteristics of the hull have been studied, tested and validated by leading research institutes and universities with more ameliorative results in each subsequent experimentation, reported in the present work, which demonstrated a greater hydrodynamic efficiency compared to conventional hulls of 20%.
文摘Self-producing marketing is a kind of classical and effective marketing measure;recently it has drawn more and more attention and won wider application.This paper will start from Britain's prince William's wedding on April 29th,2011 and analyze the self-producing marketing in marriage.Moreover,adjusted to the current marketing environment,the paper will forecast the development trend of self-producing.
