Photocatalytic water splitting to generate hydrogen gas is an ideal solution for environmental pollution and unsustainable energy issues.In the past few decades,many efforts have been made to increase the efficiency o...Photocatalytic water splitting to generate hydrogen gas is an ideal solution for environmental pollution and unsustainable energy issues.In the past few decades,many efforts have been made to increase the efficiency of hydrogen production.One of the most important ways is to achieve light absorption in the visible range to improve the conversion efficiency of solar energy into chemical energy,but it still presents great challenges.We here predicted a novel organic film,which can be obtained by polymerizing HTAP molecules,as an ideal material for photocatalytic water splitting.Based on firstprinciples calculations and Born-Oppenheimer quantum molecular dynamic simulations,the metal-free two-dimensional nanomaterial has been proven to be structurally stable,with a direct band gap of 2.12 e V,which satisfies the requirement of light absorption in the visible range.More importantly,the conduction bands and valence bands completely engulf the redox potentials of water,making the film be a promising photocatalyst for water splitting.This construction method through the topological periodicity of organic molecules provides a design scheme for the photocatalyst for water splitting.展开更多
As a result of substitution of capital for labor in agriculture and rigid demand of urban sectors for migrant workers,the rural-to-urban migration becomes irreversible process,and Todaro dogma,which aims to limit the ...As a result of substitution of capital for labor in agriculture and rigid demand of urban sectors for migrant workers,the rural-to-urban migration becomes irreversible process,and Todaro dogma,which aims to limit the migration under the assmnption of "come-and-go" migration pattern,becomes and old-fashioned theory for policy-making.By empirically confirming the advent of the Lewis turning poing-namely,a new stage of labor migration and more generally of economic development,the paper reveals the policy implication of the Lewis turning point and proposes the policy reforms needed for a complete urbanization,including hukou system reform and equalization of public services.展开更多
The pyrolysis of isopsoralen was studied by synchrotron vacuum ultraviolet photoionization mass spectrometry at low pressure. The pyrolysis products were detected at different photon energies, the ratios of products t...The pyrolysis of isopsoralen was studied by synchrotron vacuum ultraviolet photoionization mass spectrometry at low pressure. The pyrolysis products were detected at different photon energies, the ratios of products to precursor were measured at various pyrolysis temperatures. The experimental results demonstrate that the main pyrolysis products are primary CO and sequential CO elimination products (C10H602 and C9H60). The decomposition channels of isopsoralen were also studied by the density functional theory, then rate constants for competing pathways were calculated by the transition state theory. The dominant decom- position channels of isopsoralen and the molecular structures for corresponding products were identified by combined experimental and theoretical studies.展开更多
Existing theories of the globalisation of firms fall short of integrating evolutionary, self-reproductive mechanisms. This conceptual paper serves to provide an overview on existing literature in systems theory and to...Existing theories of the globalisation of firms fall short of integrating evolutionary, self-reproductive mechanisms. This conceptual paper serves to provide an overview on existing literature in systems theory and to develop a basic framework for the study of evolutionary processes in the globalisation of firms. Ontological, epistemological, and methodological consequences of an evolutionary social systems approach to globalisation will be discussed.展开更多
In this paper, we conduct research on the game theory and the logic optimization and the applications on construction of China’s new energy subsidy system. The management of energy and the general optimization of ene...In this paper, we conduct research on the game theory and the logic optimization and the applications on construction of China’s new energy subsidy system. The management of energy and the general optimization of energy structure play an important role in the development of the national economy and the upgrading of industrial structure. Therefore, it is the inevitable choice to build a well-off society in an all-round way. The energy projects management in tradition adopts way from bottom to top, namely from the floor of project management starts to collect the data, progressive upward transmission to the high-level, after analysis carries on the management and control to the project, this method had guaranteed the project pays according to progress, quality, cost and other requests, in view of the management of single project. This paper integrates the game theory and the logic optimization to construct the revised system that will be meaningful.展开更多
As the source of life,water is indispensable to human beings.Being aware of the water stress imposed by population growth,climate change,rapid urbanization,pollution,many scholars and decision makers argue that the es...As the source of life,water is indispensable to human beings.Being aware of the water stress imposed by population growth,climate change,rapid urbanization,pollution,many scholars and decision makers argue that the establishment of water rights and their system is the primary measure to tackle the water crisis problem.However,no consensus has been reached regarding the definition,nature and content of water rights both practically and academically.By examining the existing theories regarding water rights,this article tries to redefine the entitlements from the aspect of civil law.Meanwhile,it provides a system which classifies various rights by the four functions of usufruct.展开更多
The gender-based patriarchy of the Huaxia people,consisting of family and state order,inner/outer distinction and gender-based hierarchy,took shape in the period of radical transformation when the Zhou dynasty replace...The gender-based patriarchy of the Huaxia people,consisting of family and state order,inner/outer distinction and gender-based hierarchy,took shape in the period of radical transformation when the Zhou dynasty replaced the Shang dynasty and reached maturity in the Han dynasty,which had been established in the wake of the radical transformation conducted by the Zhou and Qin dynasties.On the basis of the principles of male/female distinction and the integration of family and state,Western Zhou aristocrats abolished the state structure the inner and outer governance systems(nei/waifuzhi内外服制),carried on in part the main patrilineage and surname exogamy of the Shang dynasty,and established the Huaxia patriarchal system.During the Qin and Han dynasties,the patriarchal system evolved into family and state isomorphism characterized by power-sharing between the royal house and its officials and by a two-pronged kinship system in which the male line was inner and the female line was outer.The system thus evolved into the Huaxia gender-based patriarchy,which covered spatial spheres,division of responsibilities,the kinship system,values and ethics,and codes of daily interaction and conduct.The distinction between the inner and the outer was not only a core value of the gender-based patriarchy but also its operational strategy.It also engendered such inter-related sub-systems as human functions,ethics and gender and such philosophical systems as the unity of heaven and man and the cosmic binaries of yin-yang(阴阳)and qian-kun(乾坤).The constancy(经jing)/Expedience(权quan)and Continuity(因yin)/Change(变bian)of the gender-based patriarchy,the jing/quan at the heart of the basic system and governance strategy within its constraints jointly ensured the stability and dynamism of the gender-based patriarchy of the Huaxia people.展开更多
基金supported by the National Natural Science Foundation of China (No.21803031)the Natural Science Foundation of the Jiangsu Higher Education Institution of China (No.18KJB150022)Postdoctoral Science Foundation of China (No.2018M640438)。
文摘Photocatalytic water splitting to generate hydrogen gas is an ideal solution for environmental pollution and unsustainable energy issues.In the past few decades,many efforts have been made to increase the efficiency of hydrogen production.One of the most important ways is to achieve light absorption in the visible range to improve the conversion efficiency of solar energy into chemical energy,but it still presents great challenges.We here predicted a novel organic film,which can be obtained by polymerizing HTAP molecules,as an ideal material for photocatalytic water splitting.Based on firstprinciples calculations and Born-Oppenheimer quantum molecular dynamic simulations,the metal-free two-dimensional nanomaterial has been proven to be structurally stable,with a direct band gap of 2.12 e V,which satisfies the requirement of light absorption in the visible range.More importantly,the conduction bands and valence bands completely engulf the redox potentials of water,making the film be a promising photocatalyst for water splitting.This construction method through the topological periodicity of organic molecules provides a design scheme for the photocatalyst for water splitting.
文摘As a result of substitution of capital for labor in agriculture and rigid demand of urban sectors for migrant workers,the rural-to-urban migration becomes irreversible process,and Todaro dogma,which aims to limit the migration under the assmnption of "come-and-go" migration pattern,becomes and old-fashioned theory for policy-making.By empirically confirming the advent of the Lewis turning poing-namely,a new stage of labor migration and more generally of economic development,the paper reveals the policy implication of the Lewis turning point and proposes the policy reforms needed for a complete urbanization,including hukou system reform and equalization of public services.
文摘The pyrolysis of isopsoralen was studied by synchrotron vacuum ultraviolet photoionization mass spectrometry at low pressure. The pyrolysis products were detected at different photon energies, the ratios of products to precursor were measured at various pyrolysis temperatures. The experimental results demonstrate that the main pyrolysis products are primary CO and sequential CO elimination products (C10H602 and C9H60). The decomposition channels of isopsoralen were also studied by the density functional theory, then rate constants for competing pathways were calculated by the transition state theory. The dominant decom- position channels of isopsoralen and the molecular structures for corresponding products were identified by combined experimental and theoretical studies.
文摘Existing theories of the globalisation of firms fall short of integrating evolutionary, self-reproductive mechanisms. This conceptual paper serves to provide an overview on existing literature in systems theory and to develop a basic framework for the study of evolutionary processes in the globalisation of firms. Ontological, epistemological, and methodological consequences of an evolutionary social systems approach to globalisation will be discussed.
文摘In this paper, we conduct research on the game theory and the logic optimization and the applications on construction of China’s new energy subsidy system. The management of energy and the general optimization of energy structure play an important role in the development of the national economy and the upgrading of industrial structure. Therefore, it is the inevitable choice to build a well-off society in an all-round way. The energy projects management in tradition adopts way from bottom to top, namely from the floor of project management starts to collect the data, progressive upward transmission to the high-level, after analysis carries on the management and control to the project, this method had guaranteed the project pays according to progress, quality, cost and other requests, in view of the management of single project. This paper integrates the game theory and the logic optimization to construct the revised system that will be meaningful.
基金supported by the Projects of Southwestern University of Finance and Economics (Grant No 2010XG026)the Innovative Talents Training Fund of Southwestern University of Finance and Economics
文摘As the source of life,water is indispensable to human beings.Being aware of the water stress imposed by population growth,climate change,rapid urbanization,pollution,many scholars and decision makers argue that the establishment of water rights and their system is the primary measure to tackle the water crisis problem.However,no consensus has been reached regarding the definition,nature and content of water rights both practically and academically.By examining the existing theories regarding water rights,this article tries to redefine the entitlements from the aspect of civil law.Meanwhile,it provides a system which classifies various rights by the four functions of usufruct.
文摘The gender-based patriarchy of the Huaxia people,consisting of family and state order,inner/outer distinction and gender-based hierarchy,took shape in the period of radical transformation when the Zhou dynasty replaced the Shang dynasty and reached maturity in the Han dynasty,which had been established in the wake of the radical transformation conducted by the Zhou and Qin dynasties.On the basis of the principles of male/female distinction and the integration of family and state,Western Zhou aristocrats abolished the state structure the inner and outer governance systems(nei/waifuzhi内外服制),carried on in part the main patrilineage and surname exogamy of the Shang dynasty,and established the Huaxia patriarchal system.During the Qin and Han dynasties,the patriarchal system evolved into family and state isomorphism characterized by power-sharing between the royal house and its officials and by a two-pronged kinship system in which the male line was inner and the female line was outer.The system thus evolved into the Huaxia gender-based patriarchy,which covered spatial spheres,division of responsibilities,the kinship system,values and ethics,and codes of daily interaction and conduct.The distinction between the inner and the outer was not only a core value of the gender-based patriarchy but also its operational strategy.It also engendered such inter-related sub-systems as human functions,ethics and gender and such philosophical systems as the unity of heaven and man and the cosmic binaries of yin-yang(阴阳)and qian-kun(乾坤).The constancy(经jing)/Expedience(权quan)and Continuity(因yin)/Change(变bian)of the gender-based patriarchy,the jing/quan at the heart of the basic system and governance strategy within its constraints jointly ensured the stability and dynamism of the gender-based patriarchy of the Huaxia people.