The report to the 20th CPC National Congress makes it clear that achieving common prosperity for all is an essential requirement of Chinese modernization,and that China has come to a historical period when concrete me...The report to the 20th CPC National Congress makes it clear that achieving common prosperity for all is an essential requirement of Chinese modernization,and that China has come to a historical period when concrete measures can be taken to promote common prosperity with a well-researched and effective system.In the new journey of Chinese modernization,we must correctly understand productive forces and production relations,properly handle the relation between efficiency and fairness,and promote common prosperity with sound systems.Therefore,efforts must be made to create an institutional framework of common prosperity that involves three pillars—socialism with Chinese characteristics as the fundamental system,improving the efficiency and vitality of productive forces as the basic system,and preserving fairness and adjusting productive relations and income distribution as the foundational system.To succeed,we must do the following three things.First,we should uphold the system where the Party leads the country,and all our work and the people run the country.Second,we should improve the basic economic system in which public ownership is the mainstay,the high-level socialist market economy,related systems,to promote high-quality economic development,and auxiliary systems to realize common prosperity with the digital economy.Third,we should perfect the institutional arrangements related to primary,secondary,and tertiary income distribution.展开更多
In this article, we have given the definition of the relative double multiplier (quasi-multiplier) on a ternary algebra,and studied the isomorphic problem of the multiplier algebra M(A,e) of a ternary algerbra A.
The green environmental laws and regulations are legislated, implemented, and enforced in many countries and economic regions. The provision of green products and services are the fast growing trend in global consumer...The green environmental laws and regulations are legislated, implemented, and enforced in many countries and economic regions. The provision of green products and services are the fast growing trend in global consumer markets. Therefore, introducing new products with environmental considerations becomes critical for global brand manufacturers. This research depicts an integrated and intelligent eco- and inno-product design methodology to support environmental friendly green product development. The methodology adopts approaches, such as life cycle assessment （LCA）, quality function deploymnet for environement （QFDE）, theory of inventive problem solving （TRIZ） and back-propagation network （BPN） to achieve eco- and inno-design objectives. LCA evaluates and compares the environmental impacts of production. QFDE transforms high-level concerns of environment into design requirements. When there are many historical QFDE data, the BPN prediction model is trained and deployed to automate the specifications of green design improvement. TRIZ is to support the creation of innovative product design ideas effectively and efficiently during the concept design stage. Finally, this paper presents two eco-design cases of power adaptor to demonstrate the proposed methodology.展开更多
The Relative Pollen Productivities(RPPs)of common steppe species are estimated using Extended R-value(ERV)model based on pollen analysis and vegetation survey of 30 surface soil samples from typical steppe area of nor...The Relative Pollen Productivities(RPPs)of common steppe species are estimated using Extended R-value(ERV)model based on pollen analysis and vegetation survey of 30 surface soil samples from typical steppe area of northern China.Artemisia,Chenopodiaceae,Poaceae,Cyperaceae,and Asteraceae are the dominant pollen types in pollen assemblages,reflecting the typical steppe communities well.The five dominant pollen types and six common types(Thalictrum,Iridaceae,Potentilla,Ephedra,Brassicaceae,and Ulmus)have strong wind transport abilities;the estimated Relevant Source Area of Pollen(RSAP)is ca.1000 m when the sediment basin radius is set at 0.5 m.Ulmus,Artemisia,Brassicaceae,Chenopodiaceae,and Thalictrum have relative high RPPs;Poaceae,Cyperaceae,Potentilla,and Ephedra pollen have moderate RPPs;Asteraceae and Iridaceae have low RPPs.The reliability test of RPPs revealed that most of the RPPs are reliable in past vegetation reconstruction.However,the RPPs of Asteraceae and Iridaceae are obviously underestimated,and those of Poaceae,Chenopodiaceae,and Ephedra are either slightly underestimated or slightly overestimated,suggesting that those RPPs should be considered with caution.These RPPs were applied to estimating plant abundances for two fossil pollen spectra(from the Lake Bayanchagan and Lake Haoluku)covering the Holocene in typical steppe area,using the"Regional Estimates of Vegetation Abundance from Large Sites"(REVEALS)model.The RPPs-based vegetation reconstruction revealed that meadow-steppe dominated by Poaceae,Cyperaceae,and Artemisia plants flourished in this area before 6500–5600 cal yr BP,and then was replaced by present typical steppe.展开更多
Precipitation(PPT)is the primary climatic determinant of plant growth and aboveground net primary productivity(ANPP)for many of the world’s major terrestrial ecosystems.Thus,relationships between PPT and productivity...Precipitation(PPT)is the primary climatic determinant of plant growth and aboveground net primary productivity(ANPP)for many of the world’s major terrestrial ecosystems.Thus,relationships between PPT and productivity can provide insight into how changes in climate may alter ecosystem functions globally.Spatial PPT–ANPP relationships for grasslands are found remarkably similar around the world,but whether and how they change during periods of extended climatic anomalies remain unknown.Here,we quantifed how regional-scale PPTANPP relationships vary between an extended wet and a dry period by taking advantage of a 35-year record of PPT and NDVI(as a surrogate for ANPP)at 1700 sites in the temperate grasslands of northern China.We found a sharp decrease in the strength of the spatial PPT–ANPP relationship during an 11-year period of below average PPT.We attributed the collapse of this relationship to asynchrony in the responses of different grassland types to this decadal period of increased aridity.Our results challenge the robustness of regional PPT–productivity if aridity in grasslands is increased globally by climate change.展开更多
本文研究了产品关联如何影响多产品企业的出口产品转换。参考Hidalgo et al.(2007)的研究,本文用一国在两种产品兼有比较优势的概率衡量两种产品的关联度,并在此基础上用一种产品与企业已出口的其他产品的平均关联度度量企业内产品关联...本文研究了产品关联如何影响多产品企业的出口产品转换。参考Hidalgo et al.(2007)的研究,本文用一国在两种产品兼有比较优势的概率衡量两种产品的关联度,并在此基础上用一种产品与企业已出口的其他产品的平均关联度度量企业内产品关联度。基于2000—2006年的中国海关数据库,本文运用线性概率模型进行估计,发现控制企业和城市—产品固定效应及企业—产品层面其他因素后,企业内产品关联度对产品转换在统计和经济上影响显著。产品关联度增加1个标准差,企业引入这种产品的概率上升1%,放弃这种产品的概率下降12%。2006年与2000年相比,产品转换引致企业的平均关联度上升了14%。展开更多
文摘The report to the 20th CPC National Congress makes it clear that achieving common prosperity for all is an essential requirement of Chinese modernization,and that China has come to a historical period when concrete measures can be taken to promote common prosperity with a well-researched and effective system.In the new journey of Chinese modernization,we must correctly understand productive forces and production relations,properly handle the relation between efficiency and fairness,and promote common prosperity with sound systems.Therefore,efforts must be made to create an institutional framework of common prosperity that involves three pillars—socialism with Chinese characteristics as the fundamental system,improving the efficiency and vitality of productive forces as the basic system,and preserving fairness and adjusting productive relations and income distribution as the foundational system.To succeed,we must do the following three things.First,we should uphold the system where the Party leads the country,and all our work and the people run the country.Second,we should improve the basic economic system in which public ownership is the mainstay,the high-level socialist market economy,related systems,to promote high-quality economic development,and auxiliary systems to realize common prosperity with the digital economy.Third,we should perfect the institutional arrangements related to primary,secondary,and tertiary income distribution.
文摘In this article, we have given the definition of the relative double multiplier (quasi-multiplier) on a ternary algebra,and studied the isomorphic problem of the multiplier algebra M(A,e) of a ternary algerbra A.
基金supported by the National Science Council (NSC) in Taiwan
文摘The green environmental laws and regulations are legislated, implemented, and enforced in many countries and economic regions. The provision of green products and services are the fast growing trend in global consumer markets. Therefore, introducing new products with environmental considerations becomes critical for global brand manufacturers. This research depicts an integrated and intelligent eco- and inno-product design methodology to support environmental friendly green product development. The methodology adopts approaches, such as life cycle assessment （LCA）, quality function deploymnet for environement （QFDE）, theory of inventive problem solving （TRIZ） and back-propagation network （BPN） to achieve eco- and inno-design objectives. LCA evaluates and compares the environmental impacts of production. QFDE transforms high-level concerns of environment into design requirements. When there are many historical QFDE data, the BPN prediction model is trained and deployed to automate the specifications of green design improvement. TRIZ is to support the creation of innovative product design ideas effectively and efficiently during the concept design stage. Finally, this paper presents two eco-design cases of power adaptor to demonstrate the proposed methodology.
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA05120202)the National Natural Science Foundation of China(Grant Nos.41071132,41371215)+1 种基金Science and Technology Department of Hebei Province(Grant No.13277611D)the Foundation of Key Discipline of Hebei Province and Hebei Key Laboratory of Environmental Change and Ecological Construction
文摘The Relative Pollen Productivities(RPPs)of common steppe species are estimated using Extended R-value(ERV)model based on pollen analysis and vegetation survey of 30 surface soil samples from typical steppe area of northern China.Artemisia,Chenopodiaceae,Poaceae,Cyperaceae,and Asteraceae are the dominant pollen types in pollen assemblages,reflecting the typical steppe communities well.The five dominant pollen types and six common types(Thalictrum,Iridaceae,Potentilla,Ephedra,Brassicaceae,and Ulmus)have strong wind transport abilities;the estimated Relevant Source Area of Pollen(RSAP)is ca.1000 m when the sediment basin radius is set at 0.5 m.Ulmus,Artemisia,Brassicaceae,Chenopodiaceae,and Thalictrum have relative high RPPs;Poaceae,Cyperaceae,Potentilla,and Ephedra pollen have moderate RPPs;Asteraceae and Iridaceae have low RPPs.The reliability test of RPPs revealed that most of the RPPs are reliable in past vegetation reconstruction.However,the RPPs of Asteraceae and Iridaceae are obviously underestimated,and those of Poaceae,Chenopodiaceae,and Ephedra are either slightly underestimated or slightly overestimated,suggesting that those RPPs should be considered with caution.These RPPs were applied to estimating plant abundances for two fossil pollen spectra(from the Lake Bayanchagan and Lake Haoluku)covering the Holocene in typical steppe area,using the"Regional Estimates of Vegetation Abundance from Large Sites"(REVEALS)model.The RPPs-based vegetation reconstruction revealed that meadow-steppe dominated by Poaceae,Cyperaceae,and Artemisia plants flourished in this area before 6500–5600 cal yr BP,and then was replaced by present typical steppe.
基金supported by the National Natural Science Foundation of China(31922053)the start-up fund of Hainan University(Grant No.KYQD(ZR)21096)the National Key R&D Program of China(2017YFA0604801).
文摘Precipitation(PPT)is the primary climatic determinant of plant growth and aboveground net primary productivity(ANPP)for many of the world’s major terrestrial ecosystems.Thus,relationships between PPT and productivity can provide insight into how changes in climate may alter ecosystem functions globally.Spatial PPT–ANPP relationships for grasslands are found remarkably similar around the world,but whether and how they change during periods of extended climatic anomalies remain unknown.Here,we quantifed how regional-scale PPTANPP relationships vary between an extended wet and a dry period by taking advantage of a 35-year record of PPT and NDVI(as a surrogate for ANPP)at 1700 sites in the temperate grasslands of northern China.We found a sharp decrease in the strength of the spatial PPT–ANPP relationship during an 11-year period of below average PPT.We attributed the collapse of this relationship to asynchrony in the responses of different grassland types to this decadal period of increased aridity.Our results challenge the robustness of regional PPT–productivity if aridity in grasslands is increased globally by climate change.
文摘本文研究了产品关联如何影响多产品企业的出口产品转换。参考Hidalgo et al.(2007)的研究,本文用一国在两种产品兼有比较优势的概率衡量两种产品的关联度,并在此基础上用一种产品与企业已出口的其他产品的平均关联度度量企业内产品关联度。基于2000—2006年的中国海关数据库,本文运用线性概率模型进行估计,发现控制企业和城市—产品固定效应及企业—产品层面其他因素后,企业内产品关联度对产品转换在统计和经济上影响显著。产品关联度增加1个标准差,企业引入这种产品的概率上升1%,放弃这种产品的概率下降12%。2006年与2000年相比,产品转换引致企业的平均关联度上升了14%。
