"Three new developments"is the guiding ideology of Chinese-style high-quality development in the new era.Jujube(Zizyphus jujube Mill.)is a plant of Zizyphus of Rhamnaceae,which originated in China and has be..."Three new developments"is the guiding ideology of Chinese-style high-quality development in the new era.Jujube(Zizyphus jujube Mill.)is a plant of Zizyphus of Rhamnaceae,which originated in China and has been listed as one of the"five fruits"since ancient times.Xinjiang is the most important jujube producing area in China,and its yield has accounted for 50%of the national jujube yield.In the five prefectures and cities of southern Xinjiang,as well as the regimental farms of southern and eastern Xinjiang of Xinjiang Production and Construction Corps,the jujube industry is an advantageous characteristic industry in agriculture.This paper studied Xinjiang jujube industry and its agricultural intellectual property resources,analyzed six major issues to be further implemented,such as the"three new developments"thinking and the strategy of building an intellectual property power,and puts forward eight strategies such as coordinating the two markets and two resources to accelerate the construction of a new development pattern and dual circulation of jujube.展开更多
In 2022,Yellow Sea green tide caused by Ulva prolifera reached a historic minimum and the coastal areas of Shandong Peninsula were less affected.However,the largest amount of seaweed biomass has been washed ashore on ...In 2022,Yellow Sea green tide caused by Ulva prolifera reached a historic minimum and the coastal areas of Shandong Peninsula were less affected.However,the largest amount of seaweed biomass has been washed ashore on Lianyungang and Rizhao coasts since 2015.We studied the development pattern of Yellow Sea green tide in 2022,and analyzed the key environmental factors on the growth and drifting,then discussed the possible reasons that resulted in the massive stranding of green tide biomass in Lianyungang and Rizhao.Results show under the combined influence of the east to southeast winds and currents with shoreward anomalies,green tide drifted to the coastal waters between Shandong and Jiangsu provinces and the distribution areas located westward compared with previous years(2008–2021).Floating U.prolifera rafts from the coastal waters of Binhai and Sheyang drifted continuously into the coastal waters of Lianyungang and Rizhao,providing important supplements for Yellow Sea green tide.Because green tide in 2022 distributed close to the coastal waters,the abundant nutrients might support their continuous high growth rate.In addition,the amount of rainfall around Shandong Peninsula from late June to early July were significantly higher than in previous years,which might promote the development of green tide to some extent.展开更多
The study profiles and explains the significant changes that have taken place in China's spatial development patterns since the inception of its economic reform and opening two decades ago. Principal component an...The study profiles and explains the significant changes that have taken place in China's spatial development patterns since the inception of its economic reform and opening two decades ago. Principal component analysis is used to delineate spatial patterns. The analyses show that prior to the reform China's spatial development pattern was characterized by the dominance of the three municipalities and the Northeast, as well as by both the coast-interior and the north-south disparities. Northern provinces were generally more industrialized and economically powerful than the southern ones. After two decades of reform, regional development has become multi-centered with South China, the Yangtze Delta and the Beijing-Tianjin area being the three most important regions of the country. The coastal provinces as a whole rose to prominence on China's economic map while the Northeast has diminished its clout. The coast-interior gap not only remains but may have widened. The north-south disparity also still exists but there has been a role reversal with the south now in the lead position. Virtually all inland provinces now find themselves at or near the low end of the development spectrum. We argue that the major reason for the recent shifts in Chinese space economy is the spatially differentiated economic growth resulted from the reform and open door policy and from the new, uneven development strategy adopted by the Chinese government. The paper discusses four specific factors that have reshaped China's spatial development patterns.展开更多
Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncert...Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncertainty.The fact that the Ukrainian Crisis has dragged on for long and that展开更多
Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
Consumption pattern of beta carotene rich foods from 500 households of Coimbatore district was elicited. Through market surveys in four seasons namely: summer, south-west monsoon, north-east monsoon and winter, a year...Consumption pattern of beta carotene rich foods from 500 households of Coimbatore district was elicited. Through market surveys in four seasons namely: summer, south-west monsoon, north-east monsoon and winter, a year calendar of beta carotene rich foods was developed. The total and beta carotene contents of five commonly consumed beta carotene rich foods both in raw and cooked states were determined. Results indicated that greens were mainly purchased from market and consumed 2-3 times per week. Cooking loss was maximum in boiling and minimum in shallow fat frying. Curry leaves (Murraya koenigii),amaranth tender (Amaranthus gangeticus), agathi (Sesbania grandopra), and ponnanganni (Alternanthera sessilis) were the carotene rich foods available round the year. Cost of most greens was highest in summer and lowest in north-east monsoon. Within a cost of 13-14 ps in summer, 4-10 ps in south-west monsoon and north-west monsoon and 4-12 ps in winter season, the entire day's requirement of beta carotene (2400μg) could be obtained in the form of agathi/amaranth throughout the year: in the form of drumstick leaves and mint in south-west monsoon; as curry leaves and coriander leaves in winter and as agathi,paruppukeerai and amaranth in summer. From this year calendar, according to seasonal availability and cost, low-cost high carotene foods can be selected and used for increasing the beta carotene intake in the intervention programmes and in the community展开更多
Addressing the issue of the healthy and coordinated development of the population and economic factors in rural areas will not only help consolidate and expand the achievements of poverty alleviation,but will also lay...Addressing the issue of the healthy and coordinated development of the population and economic factors in rural areas will not only help consolidate and expand the achievements of poverty alleviation,but will also lay a foundation for comprehensive rural revitalization.In this paper,the spatial coupling relationship between the population and economic factors in rural areas in the QinlingDaba Mountains,China,is explored to provide a reference for rural revitalization and regional sustainable development in poverty areas.Sixty-eight county units in rural areas in the Qinling-Daba Mountains,as well as the population and economic factors in rural areas,are used to study the spatial coupling relationship between population and economy,as well as the driving mechanism,in rural areas in the Qinling-Daba Mountains from 2010 to 2020.The results show that a population contraction phenomenon occurred in the rural areas in the Qinling-Daba Mountains,and the spatial agglomeration trends of the population and economic factors were consistent.The agglomeration was mainly located in the suburban areas of the municipal area,and the agglomeration degree was significantly higher in these areas than in other areas.In terms of the spatial distribution,the economic development level of the rural areas in the northeastern part of the Qinling-Daba Mountains was generally higher than that in the central and western parts,and the unbalanced trends of the population and economic spatial differentiation in the eastern and western regions were significant.The spatial coupling relationship between the population and economy changed from coordinated development to economic advancement.This was mainly due to the mutual restriction and joint actions of the industrial structure,capital situation,natural environment,policies,and institutional regulations,among which the industrial structure and capital status had significant effects.展开更多
Jinping Ⅱ hydropower station is located in a high in-situ stress region in Southwest China. During the excavations of the transportation and drainage tunnels, more than 460 rockburst events were recorded in the trans...Jinping Ⅱ hydropower station is located in a high in-situ stress region in Southwest China. During the excavations of the transportation and drainage tunnels, more than 460 rockburst events were recorded in the transportation tunnel and 110 in the drainage tunnel, which has a serious and negative influence on the tunnels’ construction and the safety of staff and equipment. In the paper, the characters of rockburst patterns are analyzed for the transportation and drainage tunnels. The results are illustrated as follow: (1) Most of intensive rockbursts occur in the layer T2b, and continuous occurrences of rockbursts are more frequently observed than those in other layers. (2) The critical overburden depth of rockburst in the transportation tunnel is 600 m, and the length of the continuous occurrence section of rockburst is smaller than 25 m. The damaged depth of the rockburst has the tendency to increase with the increasing overburden depth, and the maximum damaged depth is over 3.5 m. (3) From east to west (west to east) in Jinping Ⅱ hydropower station, the rockburst usually takes place in the right (left) side of tunnel working face, and then the left (right) or roof of the tunnel. The total length of the continuous occurrence section of rockburst is 57.4%–62.2% of the overall rockburst length, followed by the rockbursts of flake-splitting type and other types. (4) Compared with the transportation tunnel, the intensity of rockburst in the drainage tunnel is higher while the length of the continuous occurrence section of rockburst is smaller. The rockburst section with length less than 10 m and depth of 1 m mainly occurs in the layer at a depth of 1 800–2 000 m. The influences of opening geometry and excavation method on the characteristics of the adjacent zone are great, but the influence of the stress among the tunnel group induced by excavation is relatively low.展开更多
In this paper, the analysis of faults with different scales and orientations reveals that the distribution of fractures always develops toward a higher degree of similarity with faults, and a method for calculating th...In this paper, the analysis of faults with different scales and orientations reveals that the distribution of fractures always develops toward a higher degree of similarity with faults, and a method for calculating the multiscale areal fracture density is proposed using fault-fracture self-similarity theory. Based on the fracture parameters observed in cores and thin sections, the initial apertures of multiscale fractures are determined using the constraint method with a skewed distribution. Through calculations and statistical analyses of in situ stresses in combination with physical experiments on rocks, a numerical geomechanical model of the in situ stress field is established. The fracture opening ability under the in situ stress field is subsequently analyzed. Combining the fracture aperture data and areal fracture density at different scales, a calculation model is proposed for the prediction of multiscale and multiperiod fracture parameters, including the fracture porosity, the magnitude and direction of maximum permeability and the flow conductivity. Finally, based on the relationships among fracture aperture,density, and the relative values of fracture porosity and permeability, a fracture development pattern is determined.展开更多
Ecological experiment was conducted in this paper to study the allometric growth in Squaliobarbus curriculus larvae and juveniles from Zhaoqing Reach of the Pearl River. The results showed that after first feeding, th...Ecological experiment was conducted in this paper to study the allometric growth in Squaliobarbus curriculus larvae and juveniles from Zhaoqing Reach of the Pearl River. The results showed that after first feeding, the organs associated to swimming, feeling and feeding of larvae differentiated rapidly, and exhibited allometric growth. The head length, tail length and head height exhibited positive allometric growth, while trunk length exhibited negative allometric growth before reaching the growth inflexion point 20 d after first feeding, and positive allometric growth after the inflection point. Body height exhibited positive allometric growth both before and after the growth inflexion point at 18 d after first feeding. The inflexion points of snout length, eye diameter and post-eye head length occurred 23, 19 and 16 d after first feeding. For swimming organs, the dorsal fin, pelvic fins and anal fin exhibited positive allometric growth both before and after the inflexion point at 18, 19 and 17 d after first feeding; but the tail fin exhibited positive allometric growth before the inflexion point at 14 d after first feeding, and negative allometric growth after the inflexion point. S. curriculus larvae can possess various abilities soon after first feeding to survive at early stage due to the rapid development of swimming, feeling, feeding and other organs, which has important ecological significance to adapt to the complex external environment.展开更多
Beginning with increasing effective demand,thedemand-sidereformadvocates for the strategy to expand domestic demand,rectifies distortions in the demand structure,and further aligns demand and supply by reforming the m...Beginning with increasing effective demand,thedemand-sidereformadvocates for the strategy to expand domestic demand,rectifies distortions in the demand structure,and further aligns demand and supply by reforming the mechanisms for demand formation and regulation,matching supply and demand structures,and easing restrictions on demand.This will enhance economic growth potential and operational efficiency.The demandside reform contributes to developing a super-large-scale market and optimize market functions to form a unified national market.It also helps address significant structural distortions within domestic circulation and move faster to form a new development pattern of dual circulation.As demand-side reform inevitably deals with the vested interests of stakeholders,it presents challenges on par with supplyside structural reform.Therefore,due attention must be given in terms of priority and weight by increasing operational and property household income,transforming governmentt functions,rectifying any excessive market-orientedreforms in certain public service sectors,among others.展开更多
In recent years,the changes in the external environment and domestic development conditions have promoted the transformation of China's economy to one dominated by domestic circulation.In December 2020,the Communi...In recent years,the changes in the external environment and domestic development conditions have promoted the transformation of China's economy to one dominated by domestic circulation.In December 2020,the Communist Party of China Central Committee put forward the demand-side reform for the first time in order to prepare China for the new development stage of the 14th Five-Year Plan(2021-2025)and to promote the new strategic deployment of China's high-quality development.Based on the paths and direction of the current 14thFive-YearPlan(2021-2015)tobuild a new development pattern,this paper elaborates on the theoretical connotations of the demand-side reform,points out the bottlenecks such as the unreasonable demand structure in China,the mismatch between the industrial system and the high-level demand,the resulting demand spillovers,the poor demand channels,and puts forward the current approaches to thedemand-sideereform in China.展开更多
At the beginning of the 21st century,China’s economy entered a period of rapid growth and current economic development pattern was formed.Despite the rapid growth of the economy,the current development pattern has ca...At the beginning of the 21st century,China’s economy entered a period of rapid growth and current economic development pattern was formed.Despite the rapid growth of the economy,the current development pattern has caused divergence from the aim of development,stagnation of the means of development,and distortion of the drivers of development.The cause of the current economic development pattern is one where market-oriented reforms are pushing local governments to shift roles from profit entities to market entities,but local governments are failing to undertake the responsibilities of the market and have been exceeding their authority,ignoring their roles,or misplacing their efforts for some time.If the current economic development pattern is not changed,China could either fall into the“middle-income trap”or the“resource-exhaustion trap.”展开更多
When analyzing the Chinese economy,one should not merely focus on surface phenomena,or be confined by a purely economic,partial,or static standpoint.Contrarily,we should uphold the stances and methodologies of Xi Jinp...When analyzing the Chinese economy,one should not merely focus on surface phenomena,or be confined by a purely economic,partial,or static standpoint.Contrarily,we should uphold the stances and methodologies of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era to get a clear picture of the current state,future direction,overarching strategies,and specific approaches of the Chinese economy in the context of the long-term evolution of the global economic system and China's endeavors of building a great modern socialist country.Since the launch of reform and opening up in 1978,China has effectively modernized itself through economic development.Par ticularly,in the f irst decade of the new era,China laid down rock-solid foundations and expanded vast spaces for future economic development through systematic modernization.With the advent of the post-COVID-19 era,the Chinese economy has entered a phase of great transition,and the country has set a goal of achieving high-quality development through a new development patter n in three critical decades.This will be unprecedented in China's economic history,and its significance and implications for the global economic system will also be unseen.China's strengths in terms of system,supply,demand,and talent provide important guarantees for a successful economic transition.During the transition period,China will look economic competition squarely,continuing to deepen its opening up and reform.The Chinese economy is expected to stabilize and accumulate momentum in the short term,gradually lift off in the medium term,and have a bright future in the long term.To bring that bright future into reality,China needs to strike a good balance between two“great miracles,”two“new patterns,”two“major blocs,”and two“world orders.”Further capacity building is needed to strengthen the Communist Party of China,enhance scientific and technological innovation,build China into a financial powerhouse,cultivate good relationships worldwide,and uphold national security while creating the conditions for ensuring it.展开更多
General Secretary Xi Jinping’s important exposition on building the new development pattern is an important theoretical viewpoint of socialist political economy with Chinese characteristics.The theory is to understan...General Secretary Xi Jinping’s important exposition on building the new development pattern is an important theoretical viewpoint of socialist political economy with Chinese characteristics.The theory is to understand and reveal the objective law of the development of things,which requires us to use the theoretical method of economics to demonstrate the understanding and grasp of the objective law of the economy.The ideological source of the important exposition on new development pattern can only be explored in Marxist theory.Marx’s surplus value theory is based on an analysis of the economic cycle of capitalist domestic production,distribution,circulation and consumption,and reveals the general law of socialized mass production.The important exposition on the new development pattern is precisely the application,innovation and development of this scientific principle under the condition of socialist economy.Scholars should not examine,understand or explain the objective requirement of“taking the domestic market as the mainstay”from the perspective of“dependence on foreign trade”.An empirical study on the contribution of China’s three major demands to economic growth shows that the important judgment on the new development pattern not only reveals the basic characteristics of China’s economic development,but also points out its future trend.That“domestic and overseas markets reinforce each other”is not only a summary of China’s historical practice in its economic interaction with the rest of the world,but also denies the one-sided theoretical viewpoint in Western mainstream international economics,and reveals the objective law of the dynamic balance between China and the open world economy on the basis of pluralistic balance.The important exposition on the new development pattern also contains the main contents of how to implement the new development philosophy and deepen the reform inevitable in building a modern socialist country in the new development stage.It is the theoretical cornerstone of the guilding ideology of deepening reform.展开更多
This paper reviews the basic implications and policy orientation of the new development pattern and the impacts of constructing the new development pattern on the manufacturing transformation and upgrading,based on wh...This paper reviews the basic implications and policy orientation of the new development pattern and the impacts of constructing the new development pattern on the manufacturing transformation and upgrading,based on which the choice of manufacturing transformation and upgrading paths is further discussed under the new development pattern.This paper holds that the paths of manufacturing transformation and upgrading need to be adjusted and expanded under the conditions of constructing the new development pattern.The main ideas are as follows.Restructuring the manufacturing industry chain with the large domestic market as the main guide,creating the good environment conducive to independent innovation,coordinating the regional layout for the overall high-quality manufacturing development,optimizing the business environment and enhancing the vitality and driving force of the manufacturing’s development,relying on the Belt and Road Initiative(BRI)for a higher level of international circulation.The theoretical bases for adjusting and expanding the paths of manufacturing transformation and upgrading are:embracing the new requirements with domestic circulation as the mainstay,the characteristics with the mutual reinforcement of domestic and international circulations,and promoting the manufacturing’s high-quality development and the medium and high-speed growth.展开更多
Tourism is increasingly prominent for economic and social development,both as a strategic pillar industry of national economy and as a modern service industry that satisfies people’s aspirations for a better life.Thi...Tourism is increasingly prominent for economic and social development,both as a strategic pillar industry of national economy and as a modern service industry that satisfies people’s aspirations for a better life.This paper probes into tourism development and opening up from the perspective of the new development pattern with dual circulation,which is of practical implications for the tourism development.Balancedly developing domestic and inbound and outbound tourism-accelerating domestic tourism,expanding inbound tourism,and regulating outbound tourism-is an important way for tourism integrating into the new development pattern.For this point,it is essential to fully play the decisive role of market mechanisms and better play the regulatory role of the government.Multiple measures should be taken for the rapid,high-quality and sustainable development of tourism and for the mutual promotion of domestic and international tourism,so as to lay the foundation for making China to be a world tourism power.展开更多
Under the new development pattern,this paper explores the characteristic tendencies and intergenerational changes of consumption structure upgrade(CSU)as well as the theoretical logic and empirical paradigm affecting ...Under the new development pattern,this paper explores the characteristic tendencies and intergenerational changes of consumption structure upgrade(CSU)as well as the theoretical logic and empirical paradigm affecting the domestic value chain circulation.This paper constructs a region-industry decomposition framework for domestic value chain circulation based on backward demand to explore the impact of CSU on domestic value chain circulation.The results show that:first,CSU can optimize the structure of domestic value chain circulation and strengthen inter-regional value chain linkage;second,CSU promotes domestic value chain circulation through innovation drive,resource optimization and industrial coupling;finally,the domestic value chain circulation effect caused by CSU may be constrained by market segmentation,and accelerating regional economic integration across a country can help build up the main position of domestic value chain.展开更多
The circulation system links production and consumption.It is not only the basis on which the new development pattern is built but also an important guarantee for achieving domestic circulation.During the 14th Five-Ye...The circulation system links production and consumption.It is not only the basis on which the new development pattern is built but also an important guarantee for achieving domestic circulation.During the 14th Five-Year Plan period,improving the modern circulation system is essential for ensuring unimpeded domestic circulation and supporting high-quality economic development.This paper expounds on the new changes of and requirements on the circulation system under new circumstances,summarizes the current situation of the circulation system,analyzes the problems and challenges that the circulation system is faced with according to new requirements,and makes recommendations and puts forward main measures in a targeted way,so as to provide references for promoting coordinated development of the modern circulation system.展开更多
基金Supported by Youth Project of National Social Science Fund of China(22CMZ015)。
文摘"Three new developments"is the guiding ideology of Chinese-style high-quality development in the new era.Jujube(Zizyphus jujube Mill.)is a plant of Zizyphus of Rhamnaceae,which originated in China and has been listed as one of the"five fruits"since ancient times.Xinjiang is the most important jujube producing area in China,and its yield has accounted for 50%of the national jujube yield.In the five prefectures and cities of southern Xinjiang,as well as the regimental farms of southern and eastern Xinjiang of Xinjiang Production and Construction Corps,the jujube industry is an advantageous characteristic industry in agriculture.This paper studied Xinjiang jujube industry and its agricultural intellectual property resources,analyzed six major issues to be further implemented,such as the"three new developments"thinking and the strategy of building an intellectual property power,and puts forward eight strategies such as coordinating the two markets and two resources to accelerate the construction of a new development pattern and dual circulation of jujube.
基金Supported by the National Key R&D Program of China(No.2022YFC3106005)the Shandong Provincial Natural Science Foundation(No.ZR2021MD122)+1 种基金the MNR Key Laboratory of Eco-Environmental Science and Technology,China(No.MEEST-2023-04)the Shandong Provincial Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation(No.201708)。
文摘In 2022,Yellow Sea green tide caused by Ulva prolifera reached a historic minimum and the coastal areas of Shandong Peninsula were less affected.However,the largest amount of seaweed biomass has been washed ashore on Lianyungang and Rizhao coasts since 2015.We studied the development pattern of Yellow Sea green tide in 2022,and analyzed the key environmental factors on the growth and drifting,then discussed the possible reasons that resulted in the massive stranding of green tide biomass in Lianyungang and Rizhao.Results show under the combined influence of the east to southeast winds and currents with shoreward anomalies,green tide drifted to the coastal waters between Shandong and Jiangsu provinces and the distribution areas located westward compared with previous years(2008–2021).Floating U.prolifera rafts from the coastal waters of Binhai and Sheyang drifted continuously into the coastal waters of Lianyungang and Rizhao,providing important supplements for Yellow Sea green tide.Because green tide in 2022 distributed close to the coastal waters,the abundant nutrients might support their continuous high growth rate.In addition,the amount of rainfall around Shandong Peninsula from late June to early July were significantly higher than in previous years,which might promote the development of green tide to some extent.
文摘The study profiles and explains the significant changes that have taken place in China's spatial development patterns since the inception of its economic reform and opening two decades ago. Principal component analysis is used to delineate spatial patterns. The analyses show that prior to the reform China's spatial development pattern was characterized by the dominance of the three municipalities and the Northeast, as well as by both the coast-interior and the north-south disparities. Northern provinces were generally more industrialized and economically powerful than the southern ones. After two decades of reform, regional development has become multi-centered with South China, the Yangtze Delta and the Beijing-Tianjin area being the three most important regions of the country. The coastal provinces as a whole rose to prominence on China's economic map while the Northeast has diminished its clout. The coast-interior gap not only remains but may have widened. The north-south disparity also still exists but there has been a role reversal with the south now in the lead position. Virtually all inland provinces now find themselves at or near the low end of the development spectrum. We argue that the major reason for the recent shifts in Chinese space economy is the spatially differentiated economic growth resulted from the reform and open door policy and from the new, uneven development strategy adopted by the Chinese government. The paper discusses four specific factors that have reshaped China's spatial development patterns.
文摘Uncertainties in the International Situation Are on the Increase and Transformation of International Pattern and Order Accelerates and Deepens Since 2016,the world has begun to enter into a historical period of uncertainty.The fact that the Ukrainian Crisis has dragged on for long and that
文摘Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
文摘Consumption pattern of beta carotene rich foods from 500 households of Coimbatore district was elicited. Through market surveys in four seasons namely: summer, south-west monsoon, north-east monsoon and winter, a year calendar of beta carotene rich foods was developed. The total and beta carotene contents of five commonly consumed beta carotene rich foods both in raw and cooked states were determined. Results indicated that greens were mainly purchased from market and consumed 2-3 times per week. Cooking loss was maximum in boiling and minimum in shallow fat frying. Curry leaves (Murraya koenigii),amaranth tender (Amaranthus gangeticus), agathi (Sesbania grandopra), and ponnanganni (Alternanthera sessilis) were the carotene rich foods available round the year. Cost of most greens was highest in summer and lowest in north-east monsoon. Within a cost of 13-14 ps in summer, 4-10 ps in south-west monsoon and north-west monsoon and 4-12 ps in winter season, the entire day's requirement of beta carotene (2400μg) could be obtained in the form of agathi/amaranth throughout the year: in the form of drumstick leaves and mint in south-west monsoon; as curry leaves and coriander leaves in winter and as agathi,paruppukeerai and amaranth in summer. From this year calendar, according to seasonal availability and cost, low-cost high carotene foods can be selected and used for increasing the beta carotene intake in the intervention programmes and in the community
基金Under the auspices of National Natural Science Foundation of China(No.42071220,42371223)China Postdoctoral Science Foundation(No.2021M701053)Postgraduate Cultivating Innovation and Quality Improvement Action Plan of Henan University(No.SYLYC2022017)。
文摘Addressing the issue of the healthy and coordinated development of the population and economic factors in rural areas will not only help consolidate and expand the achievements of poverty alleviation,but will also lay a foundation for comprehensive rural revitalization.In this paper,the spatial coupling relationship between the population and economic factors in rural areas in the QinlingDaba Mountains,China,is explored to provide a reference for rural revitalization and regional sustainable development in poverty areas.Sixty-eight county units in rural areas in the Qinling-Daba Mountains,as well as the population and economic factors in rural areas,are used to study the spatial coupling relationship between population and economy,as well as the driving mechanism,in rural areas in the Qinling-Daba Mountains from 2010 to 2020.The results show that a population contraction phenomenon occurred in the rural areas in the Qinling-Daba Mountains,and the spatial agglomeration trends of the population and economic factors were consistent.The agglomeration was mainly located in the suburban areas of the municipal area,and the agglomeration degree was significantly higher in these areas than in other areas.In terms of the spatial distribution,the economic development level of the rural areas in the northeastern part of the Qinling-Daba Mountains was generally higher than that in the central and western parts,and the unbalanced trends of the population and economic spatial differentiation in the eastern and western regions were significant.The spatial coupling relationship between the population and economy changed from coordinated development to economic advancement.This was mainly due to the mutual restriction and joint actions of the industrial structure,capital situation,natural environment,policies,and institutional regulations,among which the industrial structure and capital status had significant effects.
基金Supported by the National Natural Science Foundation of China (40902086)the National Key Technology R&D Program in the 11th Five-year Plan of China (2008BAB29B01-5)
文摘Jinping Ⅱ hydropower station is located in a high in-situ stress region in Southwest China. During the excavations of the transportation and drainage tunnels, more than 460 rockburst events were recorded in the transportation tunnel and 110 in the drainage tunnel, which has a serious and negative influence on the tunnels’ construction and the safety of staff and equipment. In the paper, the characters of rockburst patterns are analyzed for the transportation and drainage tunnels. The results are illustrated as follow: (1) Most of intensive rockbursts occur in the layer T2b, and continuous occurrences of rockbursts are more frequently observed than those in other layers. (2) The critical overburden depth of rockburst in the transportation tunnel is 600 m, and the length of the continuous occurrence section of rockburst is smaller than 25 m. The damaged depth of the rockburst has the tendency to increase with the increasing overburden depth, and the maximum damaged depth is over 3.5 m. (3) From east to west (west to east) in Jinping Ⅱ hydropower station, the rockburst usually takes place in the right (left) side of tunnel working face, and then the left (right) or roof of the tunnel. The total length of the continuous occurrence section of rockburst is 57.4%–62.2% of the overall rockburst length, followed by the rockbursts of flake-splitting type and other types. (4) Compared with the transportation tunnel, the intensity of rockburst in the drainage tunnel is higher while the length of the continuous occurrence section of rockburst is smaller. The rockburst section with length less than 10 m and depth of 1 m mainly occurs in the layer at a depth of 1 800–2 000 m. The influences of opening geometry and excavation method on the characteristics of the adjacent zone are great, but the influence of the stress among the tunnel group induced by excavation is relatively low.
基金supported by the Fundamental Research Funds for the Central Universities (2652017308)the National Natural Science Foundation of China (Grant Nos. 41372139 and 41072098)the National Science and Technology Major Project of China (2016ZX05046-003-001 and 2016ZX05034-004003)
文摘In this paper, the analysis of faults with different scales and orientations reveals that the distribution of fractures always develops toward a higher degree of similarity with faults, and a method for calculating the multiscale areal fracture density is proposed using fault-fracture self-similarity theory. Based on the fracture parameters observed in cores and thin sections, the initial apertures of multiscale fractures are determined using the constraint method with a skewed distribution. Through calculations and statistical analyses of in situ stresses in combination with physical experiments on rocks, a numerical geomechanical model of the in situ stress field is established. The fracture opening ability under the in situ stress field is subsequently analyzed. Combining the fracture aperture data and areal fracture density at different scales, a calculation model is proposed for the prediction of multiscale and multiperiod fracture parameters, including the fracture porosity, the magnitude and direction of maximum permeability and the flow conductivity. Finally, based on the relationships among fracture aperture,density, and the relative values of fracture porosity and permeability, a fracture development pattern is determined.
基金Supported by Special Fund for Agro-scientific Research in the Public Interest(201303048)Major Program of Natural Science Foundation of Guangxi(013GXNSFEA053003)
文摘Ecological experiment was conducted in this paper to study the allometric growth in Squaliobarbus curriculus larvae and juveniles from Zhaoqing Reach of the Pearl River. The results showed that after first feeding, the organs associated to swimming, feeling and feeding of larvae differentiated rapidly, and exhibited allometric growth. The head length, tail length and head height exhibited positive allometric growth, while trunk length exhibited negative allometric growth before reaching the growth inflexion point 20 d after first feeding, and positive allometric growth after the inflection point. Body height exhibited positive allometric growth both before and after the growth inflexion point at 18 d after first feeding. The inflexion points of snout length, eye diameter and post-eye head length occurred 23, 19 and 16 d after first feeding. For swimming organs, the dorsal fin, pelvic fins and anal fin exhibited positive allometric growth both before and after the inflexion point at 18, 19 and 17 d after first feeding; but the tail fin exhibited positive allometric growth before the inflexion point at 14 d after first feeding, and negative allometric growth after the inflexion point. S. curriculus larvae can possess various abilities soon after first feeding to survive at early stage due to the rapid development of swimming, feeling, feeding and other organs, which has important ecological significance to adapt to the complex external environment.
文摘Beginning with increasing effective demand,thedemand-sidereformadvocates for the strategy to expand domestic demand,rectifies distortions in the demand structure,and further aligns demand and supply by reforming the mechanisms for demand formation and regulation,matching supply and demand structures,and easing restrictions on demand.This will enhance economic growth potential and operational efficiency.The demandside reform contributes to developing a super-large-scale market and optimize market functions to form a unified national market.It also helps address significant structural distortions within domestic circulation and move faster to form a new development pattern of dual circulation.As demand-side reform inevitably deals with the vested interests of stakeholders,it presents challenges on par with supplyside structural reform.Therefore,due attention must be given in terms of priority and weight by increasing operational and property household income,transforming governmentt functions,rectifying any excessive market-orientedreforms in certain public service sectors,among others.
文摘In recent years,the changes in the external environment and domestic development conditions have promoted the transformation of China's economy to one dominated by domestic circulation.In December 2020,the Communist Party of China Central Committee put forward the demand-side reform for the first time in order to prepare China for the new development stage of the 14th Five-Year Plan(2021-2025)and to promote the new strategic deployment of China's high-quality development.Based on the paths and direction of the current 14thFive-YearPlan(2021-2015)tobuild a new development pattern,this paper elaborates on the theoretical connotations of the demand-side reform,points out the bottlenecks such as the unreasonable demand structure in China,the mismatch between the industrial system and the high-level demand,the resulting demand spillovers,the poor demand channels,and puts forward the current approaches to thedemand-sideereform in China.
文摘At the beginning of the 21st century,China’s economy entered a period of rapid growth and current economic development pattern was formed.Despite the rapid growth of the economy,the current development pattern has caused divergence from the aim of development,stagnation of the means of development,and distortion of the drivers of development.The cause of the current economic development pattern is one where market-oriented reforms are pushing local governments to shift roles from profit entities to market entities,but local governments are failing to undertake the responsibilities of the market and have been exceeding their authority,ignoring their roles,or misplacing their efforts for some time.If the current economic development pattern is not changed,China could either fall into the“middle-income trap”or the“resource-exhaustion trap.”
文摘When analyzing the Chinese economy,one should not merely focus on surface phenomena,or be confined by a purely economic,partial,or static standpoint.Contrarily,we should uphold the stances and methodologies of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era to get a clear picture of the current state,future direction,overarching strategies,and specific approaches of the Chinese economy in the context of the long-term evolution of the global economic system and China's endeavors of building a great modern socialist country.Since the launch of reform and opening up in 1978,China has effectively modernized itself through economic development.Par ticularly,in the f irst decade of the new era,China laid down rock-solid foundations and expanded vast spaces for future economic development through systematic modernization.With the advent of the post-COVID-19 era,the Chinese economy has entered a phase of great transition,and the country has set a goal of achieving high-quality development through a new development patter n in three critical decades.This will be unprecedented in China's economic history,and its significance and implications for the global economic system will also be unseen.China's strengths in terms of system,supply,demand,and talent provide important guarantees for a successful economic transition.During the transition period,China will look economic competition squarely,continuing to deepen its opening up and reform.The Chinese economy is expected to stabilize and accumulate momentum in the short term,gradually lift off in the medium term,and have a bright future in the long term.To bring that bright future into reality,China needs to strike a good balance between two“great miracles,”two“new patterns,”two“major blocs,”and two“world orders.”Further capacity building is needed to strengthen the Communist Party of China,enhance scientific and technological innovation,build China into a financial powerhouse,cultivate good relationships worldwide,and uphold national security while creating the conditions for ensuring it.
文摘General Secretary Xi Jinping’s important exposition on building the new development pattern is an important theoretical viewpoint of socialist political economy with Chinese characteristics.The theory is to understand and reveal the objective law of the development of things,which requires us to use the theoretical method of economics to demonstrate the understanding and grasp of the objective law of the economy.The ideological source of the important exposition on new development pattern can only be explored in Marxist theory.Marx’s surplus value theory is based on an analysis of the economic cycle of capitalist domestic production,distribution,circulation and consumption,and reveals the general law of socialized mass production.The important exposition on the new development pattern is precisely the application,innovation and development of this scientific principle under the condition of socialist economy.Scholars should not examine,understand or explain the objective requirement of“taking the domestic market as the mainstay”from the perspective of“dependence on foreign trade”.An empirical study on the contribution of China’s three major demands to economic growth shows that the important judgment on the new development pattern not only reveals the basic characteristics of China’s economic development,but also points out its future trend.That“domestic and overseas markets reinforce each other”is not only a summary of China’s historical practice in its economic interaction with the rest of the world,but also denies the one-sided theoretical viewpoint in Western mainstream international economics,and reveals the objective law of the dynamic balance between China and the open world economy on the basis of pluralistic balance.The important exposition on the new development pattern also contains the main contents of how to implement the new development philosophy and deepen the reform inevitable in building a modern socialist country in the new development stage.It is the theoretical cornerstone of the guilding ideology of deepening reform.
基金“Research on Major Issues of Coordinated Development of Secondary and Tertiary Industries Amid the Service-Oriented Manufacturing Transformation”,supported by Major Projects of the National Social Science Fund of China(20&ZD087)This paper is an excerpt from the authors’Chinese article on China Industrial Economics,No.11,2021。
文摘This paper reviews the basic implications and policy orientation of the new development pattern and the impacts of constructing the new development pattern on the manufacturing transformation and upgrading,based on which the choice of manufacturing transformation and upgrading paths is further discussed under the new development pattern.This paper holds that the paths of manufacturing transformation and upgrading need to be adjusted and expanded under the conditions of constructing the new development pattern.The main ideas are as follows.Restructuring the manufacturing industry chain with the large domestic market as the main guide,creating the good environment conducive to independent innovation,coordinating the regional layout for the overall high-quality manufacturing development,optimizing the business environment and enhancing the vitality and driving force of the manufacturing’s development,relying on the Belt and Road Initiative(BRI)for a higher level of international circulation.The theoretical bases for adjusting and expanding the paths of manufacturing transformation and upgrading are:embracing the new requirements with domestic circulation as the mainstay,the characteristics with the mutual reinforcement of domestic and international circulations,and promoting the manufacturing’s high-quality development and the medium and high-speed growth.
基金CASS Innovation Project“China’s Service Industry Upgrading Strategy and Major Policy Options in the 14th Five-Year Period”(2020CJY01-B004).
文摘Tourism is increasingly prominent for economic and social development,both as a strategic pillar industry of national economy and as a modern service industry that satisfies people’s aspirations for a better life.This paper probes into tourism development and opening up from the perspective of the new development pattern with dual circulation,which is of practical implications for the tourism development.Balancedly developing domestic and inbound and outbound tourism-accelerating domestic tourism,expanding inbound tourism,and regulating outbound tourism-is an important way for tourism integrating into the new development pattern.For this point,it is essential to fully play the decisive role of market mechanisms and better play the regulatory role of the government.Multiple measures should be taken for the rapid,high-quality and sustainable development of tourism and for the mutual promotion of domestic and international tourism,so as to lay the foundation for making China to be a world tourism power.
基金“Research on WTO Reform in the Context of Global Economic&Trade Rules Restructuring”(21JZD023)under Major Projects of Philosophy and Social Sciences Research of China’s Ministry of Education“Service-Oriented Manufacturing Inputs,Trade Barriers in Services and International Production Segmentation”(71973025)under the National Natural Science Foundation of Chinathe Grant Program for Outstanding Young Scholars of the University of International Business and Economics(19JQ08).
文摘Under the new development pattern,this paper explores the characteristic tendencies and intergenerational changes of consumption structure upgrade(CSU)as well as the theoretical logic and empirical paradigm affecting the domestic value chain circulation.This paper constructs a region-industry decomposition framework for domestic value chain circulation based on backward demand to explore the impact of CSU on domestic value chain circulation.The results show that:first,CSU can optimize the structure of domestic value chain circulation and strengthen inter-regional value chain linkage;second,CSU promotes domestic value chain circulation through innovation drive,resource optimization and industrial coupling;finally,the domestic value chain circulation effect caused by CSU may be constrained by market segmentation,and accelerating regional economic integration across a country can help build up the main position of domestic value chain.
基金“A Study on the Path,Mechanism and Policy System for Bidirectional Promotion of Innovation in Circulation Forms and High-Quality Consumption”(19AJY020),which is a key program of the National Social Science Fund of China,and a phased result of“The Theoretical Mechanism and Ploicy System for the High-Quality Development of Consumption to Promote the Formation of a Strong Domestic Market”(CJY2019B005),which is an innovative project of the National Academy of Economic Strategy,CASS.
文摘The circulation system links production and consumption.It is not only the basis on which the new development pattern is built but also an important guarantee for achieving domestic circulation.During the 14th Five-Year Plan period,improving the modern circulation system is essential for ensuring unimpeded domestic circulation and supporting high-quality economic development.This paper expounds on the new changes of and requirements on the circulation system under new circumstances,summarizes the current situation of the circulation system,analyzes the problems and challenges that the circulation system is faced with according to new requirements,and makes recommendations and puts forward main measures in a targeted way,so as to provide references for promoting coordinated development of the modern circulation system.