Nurses play a vital role on the front lines of health care and make outstanding contributions to people's health all over the world.In China,people's health has been remarkably improved in recent 100 years.By ...Nurses play a vital role on the front lines of health care and make outstanding contributions to people's health all over the world.In China,people's health has been remarkably improved in recent 100 years.By 2020,the average life expectancy has been increased to 77.8 years.展开更多
Since the disintegration of the former Soviet Union, the United States and Rus-sia have gone through a tortuous road in forging their post-Cold War relation-ship. At present, they are neither bipolar rivals, nor strat...Since the disintegration of the former Soviet Union, the United States and Rus-sia have gone through a tortuous road in forging their post-Cold War relation-ship. At present, they are neither bipolar rivals, nor strategic partners as initiatedin early 1990s. They have instead turned from maintaining amicability into copingwith the reality. Their discrepancies in terms of strategies and bilateral relationshave emerged one after another in recent years and became intensified especially af-ter Operation Desert Fox against Iraq by the United States and Britain展开更多
1.This study is one of The Applied Economic Institutes Linkages Project(AERIL)which is funded by theCanadian International Development Agency(CIDA)and jiontly managed by The Conference Board of Canada(CBOC)and the Int...1.This study is one of The Applied Economic Institutes Linkages Project(AERIL)which is funded by theCanadian International Development Agency(CIDA)and jiontly managed by The Conference Board of Canada(CBOC)and the International Trade Research Institute in China.It is jointly implemented by the Institute ofEconomic Research of the Chinese State Planning Commission and the North—South Institute of Canada。展开更多
The article seeks to examine the East Look Policy(ELP)in Iran’s Foreign Policy(IFP)(2005-2013).We believe that states,due to different factors,may adopt different policies in their FP.So,the main research question is...The article seeks to examine the East Look Policy(ELP)in Iran’s Foreign Policy(IFP)(2005-2013).We believe that states,due to different factors,may adopt different policies in their FP.So,the main research question is:Why did Iranian state adopt ELP in its FP in duration of Mahmoud Ahmadinejad era?With regard to the question,our hypothesis is“there are some factors in Iran’s internal environment that we called them micro-level factors and some variable in external environment that we called them macro-level variables in formation of ELP in IFP”.To prove this hypothesis,we use James Rosenau’s foreign policy theory that has been stood on two micro-and macrolevel analysis to examination of FP of any state.Regarding Rosenau’s theory,there are four factors on micro-level include:individual of policy-maker,his/her role in political system,social values,and governmental structure.In addition,in macro-level,there are some variables,such as the logic of anarchy,the action of other states(especially US),and nuclear sanctions imposed by the US and Western nations.展开更多
This paper focuses on Iran's foreign policy towards the Caucasus and Central Asia regions in the post-Soviet Union era, using a theoretical approach which stresses the importance of historical and geographical contex...This paper focuses on Iran's foreign policy towards the Caucasus and Central Asia regions in the post-Soviet Union era, using a theoretical approach which stresses the importance of historical and geographical contextualization for the analysis of foreign policy. The article's main argument is that Iranian foreign policy towards these regions in the last 25 years, although the result of a complex and multi-layered decision-making process, has been led by two unifying long-term objectives: regional stability and national security. In order to demonstrate this argument, the article undertakes a factual analysis focusing on the role Iran played during the main regional conflicts that have occurred since the Soviet Union's collapse in Central Asia and the Caucasus, as well as the diplomatic re-engagement Iran has been building with the countries of these two regions after the end of the Iran nuclear deal. Standard interpretations of Iran's foreign policy define it as a player with hegemonic ambitions whose foreign policy is mainly led by ideological factors. This paper assumes that foreign policy's analysis needs time and space contextualization. Once historical and geographical factors are taken into account----of which the most important are Iran's proximity to Russia and Afghanistan along with its international diplomatic isolation due to nuclear sanctions--then Iran's foreign policy in Central Asia and the Caucasus appears to be that of a regional power interested in maintaining the existing status quo. Stability and territorial integrity in these two regions in fact are seen by Teheran as necessary conditions for Iran's own territorial integrity and internal security. The paper is based on both secondary and primary sources, most of them official statements, all in the public domain.展开更多
The twenty-first century globalization in international affairs has created an integration which appears unpreventable. This global integration had an impact on South Asia. This paper examines the significance of the ...The twenty-first century globalization in international affairs has created an integration which appears unpreventable. This global integration had an impact on South Asia. This paper examines the significance of the United States defence strategy of combating terrorism and its policy of development. It intends to rethink of the United States defence strategy towards South Asia after September 2001 terrorist attack; whether it is to combat terrorism as stipulated in US national documents or whether it has other intentions. The latter part of this research presents the relevant interventions and defence actions that followed the US policy declarations. The intentions of long-term objectives are implicit in the chain of defence activities that followed to date. In this regard, the significance of this research is to understand how a peaceful atmosphere could be created in South Asia where global development automatically follows. The findings of this research have opened up a relevant and timely topic to inquire into. Specifically, this research encourages Sri Lanka to understand and rethink its foreign policy as a country in a post war period.展开更多
The transatlantic alliance is the pillar of the EU’s foreign and security policy.However,as major readjustment happens to US foreign policy,EU-US relations undergo significant changes,and there are also tendencies of...The transatlantic alliance is the pillar of the EU’s foreign and security policy.However,as major readjustment happens to US foreign policy,EU-US relations undergo significant changes,and there are also tendencies of readjustment of EU’s foreign policy.A“Different”America Since the World War II,Europe has been in close alliance with the US,by which America provides Europe with security protection,and Europe willingly follows the US leadership and sits at its feet on all major global diplomatic and security issues.However,since taking office,the Trump administration has pushed forward the“America First”foreign policy,and made America no longer the same country as Europe used to be familiar with and trust,but conversely the biggest saboteur and violator of European interests.展开更多
Atmospheric nitrogen(N)deposition has experienced significant change because of anthropogenic emissions,thereby exerting a pronounced impact on global ecosystem services.With the rapid development of industry and agri...Atmospheric nitrogen(N)deposition has experienced significant change because of anthropogenic emissions,thereby exerting a pronounced impact on global ecosystem services.With the rapid development of industry and agriculture and the swift expansion of urban areas in China since the 1980s,reactive nitrogen(Nr)emissions and N deposition have substantially increased.In pursuit of im-proving air quality,China has implemented a series of environmental protection policies and undertaken diverse measures to reduce pol-lutant emissions.This paper is a review of multivariate data sources of atmospheric N deposition based on the results of literature from 1980 to 2023,and the original data from 1980 to 2020 are summarized,counted and calculated.The main findings are as follows:1)the annual average atmospheric N deposition ranged from approximately 20-40 kg/(ha·yr),with the variability primarily linked to different assessment methods;2)regional disparities were evident in the spatial distribution of N deposition,with elevated values concentrated in areas with intense Nr emissions;3)atmospheric N deposition significantly declined after 2010,particularly the deposition of oxidized N,while reduced N deposition remained stable.These results reflect the effects of China's serious control policies on nitrogen oxide(NO.)emissions and strengthen the importance of agricultural NH3 emission mitigation.This study contributes to a comprehensive understanding of the N dynamics in the emission-deposition process,and provides a scientific foundation for the research of environmental protection,climate change,and sustainable development.展开更多
Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s arti...Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s artificial intelligence(AI)disruptive technology policy,and to put forward suggestions for optimizing China’s AI disruptive technology policy.Design/methodology/approach:Develop a three-dimensional analytical framework for“policy tools-policy actors-policy themes”and apply policy tools,social network analysis,and LDA topic model to conduct a comprehensive analysis of the utilization of policy tools,cooperative relationships among policy actors,and the trends in policy theme settings within China’s innovative AI technology policy.Findings:We find that the collaborative relationship among the policy actors of AI disruptive technology in China is insufficiently close.Marginal subjects exhibit low participation in the cooperation network and overly rely on central subjects,forming a“center-periphery”network structure.Policy tool usage is predominantly focused on supply and environmental types,with a severe inadequacy in demand-side policy tool utilization.Policy themes are diverse,encompassing topics such as“Intelligent Services”“Talent Cultivation”“Information Security”and“Technological Innovation”,which will remain focal points.Under the themes of“Intelligent Services”and“Intelligent Governance”,policy tool usage is relatively balanced,with close collaboration among policy entities.However,the theme of“AI Theoretical System”lacks a comprehensive understanding of tool usage and necessitates enhanced cooperation with other policy entities.Research limitations:The data sources and experimental scope are subject to certain limitations,potentially introducing biases and imperfections into the research results,necessitating further validation and refinement.Practical implications:The study introduces a three-dimensional analysis framework for disruptive technology policy texts,which is significant for formulating and enhancing disruptive technology policies.Originality/value:This study utilizes text mining and content analysis techniques to quantitatively analyze disruptive technology policy texts.It systematically evaluates China’s AI policies quantitatively,focusing on policy tools,policy actors,policy themes.The study uncovers the characteristics and deficiencies of current AI policies,offering recommendations for formulating and enhancing disruptive technology policies.展开更多
Purpose:The disseminating of academic knowledge to nonacademic audiences partly relies on the transition of subsequent citing papers.This study aims to investigate direct and indirect impact on technology and policy o...Purpose:The disseminating of academic knowledge to nonacademic audiences partly relies on the transition of subsequent citing papers.This study aims to investigate direct and indirect impact on technology and policy originating from transformative research based on ego citation network.Design/methodology/approach:Key Nobel Prize-winning publications(NPs)in fields of gene engineering and astrophysics are regarded as a proxy for transformative research.In this contribution,we introduce a network-structural indicator of citing patents to measure technological impact of a target article and use policy citations as a preliminary tool for policy impact.Findings:The results show that the impact on technology and policy of NPs are higher than that of their subsequent citation generations in gene engineering but not in astrophysics.Research limitations:The selection of Nobel Prizes is not balanced and the database used in this study,Dimensions,suffers from incompleteness and inaccuracy of citation links.Practical implications:Our findings provide useful clues to better understand the characteristics of transformative research in technological and policy impact.Originality/value:This study proposes a new framework to explore the direct and indirect impact on technology and policy originating from transformative research.展开更多
Dear Editor,In this letter,the multi-objective optimal control problem of nonlinear discrete-time systems is investigated.A data-driven policy gradient algorithm is proposed in which the action-state value function is...Dear Editor,In this letter,the multi-objective optimal control problem of nonlinear discrete-time systems is investigated.A data-driven policy gradient algorithm is proposed in which the action-state value function is used to evaluate the policy.In the policy improvement process,the policy gradient based method is employed.展开更多
China has proposed that it will strive to achieve the carbon neutrality target by 2060,providing strategic guidance for China to accelerate the transformation of its development mode and economic restructuring.But it ...China has proposed that it will strive to achieve the carbon neutrality target by 2060,providing strategic guidance for China to accelerate the transformation of its development mode and economic restructuring.But it is very challenging to achieve the target.It requires systematic top design as well as scientific formulation of long-term planning,while multiple institutional policies and institutional mechanism reforms need to be strengthened,such as rule of law,administration and economy,to form a systematic and effective incentive and constraint mechanism.Through the exploration and improvement of its three five-year plans,China has formed a low-carbon policy guarantee system led by binding targets,highlighting key industries and regions,and comprising planning,laws,administrative orders,pilot projects,markets,finance and taxation,and other aspects.However,there are still many problems,including the lack of clear policy paths in the near,medium and long term,the absence of key systems such as total carbon emission control system and climate legislation,poor inter-departmental communication and coordination mechanisms,and inadequate systems such as carbon markets and climate investment and financing.Finally,taking into account the current opportunities and challenges,we propose a low-carbon development policy guarantee system for China to move towards carbon neutrality.展开更多
H9N2 virus has been widely distributed in wild birds and poultry around the world since its first emergence in the United States of America in 1966(Gu et al.2017;Carnaccini and Perez 2020).The virus appeared in chicke...H9N2 virus has been widely distributed in wild birds and poultry around the world since its first emergence in the United States of America in 1966(Gu et al.2017;Carnaccini and Perez 2020).The virus appeared in chickens in China in the early 1990s,and over the last two decades has gradually become the dominant epidemic subtype(Sun and Liu 2015;Bi et al.2020).Although H9N2 virus infection alone cannot cause severe disease or death in poultry,H9N2 virus-infected birds experience a degree of egg production drop and can be easily infected by other pathogens,thus causing economic losses for poultry industry.展开更多
Autonomous driving has witnessed rapid advancement;however,ensuring safe and efficient driving in intricate scenarios remains a critical challenge.In particular,traffic roundabouts bring a set of challenges to autonom...Autonomous driving has witnessed rapid advancement;however,ensuring safe and efficient driving in intricate scenarios remains a critical challenge.In particular,traffic roundabouts bring a set of challenges to autonomous driving due to the unpredictable entry and exit of vehicles,susceptibility to traffic flow bottlenecks,and imperfect data in perceiving environmental information,rendering them a vital issue in the practical application of autonomous driving.To address the traffic challenges,this work focused on complex roundabouts with multi-lane and proposed a Perception EnhancedDeepDeterministic Policy Gradient(PE-DDPG)for AutonomousDriving in the Roundabouts.Specifically,themodel incorporates an enhanced variational autoencoder featuring an integrated spatial attention mechanism alongside the Deep Deterministic Policy Gradient framework,enhancing the vehicle’s capability to comprehend complex roundabout environments and make decisions.Furthermore,the PE-DDPG model combines a dynamic path optimization strategy for roundabout scenarios,effectively mitigating traffic bottlenecks and augmenting throughput efficiency.Extensive experiments were conducted with the collaborative simulation platform of CARLA and SUMO,and the experimental results show that the proposed PE-DDPG outperforms the baseline methods in terms of the convergence capacity of the training process,the smoothness of driving and the traffic efficiency with diverse traffic flow patterns and penetration rates of autonomous vehicles(AVs).Generally,the proposed PE-DDPGmodel could be employed for autonomous driving in complex scenarios with imperfect data.展开更多
With intensifying global climate change,humanity is confronted with unparalleled environmental challenges and risks.This study employs the staggered difference-in-difference model to examine the relationship between c...With intensifying global climate change,humanity is confronted with unparalleled environmental challenges and risks.This study employs the staggered difference-in-difference model to examine the relationship between climate policy and green innovation in the corporate financialization context.Using Chinese-listed company data from 2008 to 2020,our analysis reveals a favorable correlation between China’s carbon emission trading policy(CCTP)and advancements in green innovation.Furthermore,we find that the level of corporate financialization moderates this correlation,diminishing the driving effect of CCTP on green innovation.Additionally,results of heterogeneity analysis show that this moderating consequence is more evident in non-state owned and low-digitization enterprises compared with state-owned and high-digitization ones.Our findings contribute to the existing literature by clarifying the interaction between CCTP,green innovation,and corporate financialization.Our research provides valuable insights for policymakers and stakeholders seeking to strengthen climate policies and encourages green innovation in different types of businesses.展开更多
In contrast to the traditional Western approach to macro-fiscal management,China’s proactive fiscal policy is founded on a people-centered development philosophy and,with distinctive Chinese characteristics,is a sign...In contrast to the traditional Western approach to macro-fiscal management,China’s proactive fiscal policy is founded on a people-centered development philosophy and,with distinctive Chinese characteristics,is a significant policy innovation of macroeconomic management in the Chinese modernization.Although there are notable distinctions between the Western“Keynesian”and the“nonKeynesian”schools of thought,both of these approaches’core policy goals and methodological roots are the same,composing the traditional Western macro-fiscal approach.This approach faces increasing real dilemmas.China’s proactive fiscal policy,however,places greater emphasis on future potential growth rates in addition to equilibrium between supply and demand,achieving a fiscal policy transformation with a new approach.In this paper we argue that with such a new approach,China should reconsider the nature and reasonable level of the fiscal deficit,the function and risk assessment criteria of government debt,the scope and effects of reductions in taxes and fees,its approach and focus of demand management,and the costs and resulting efficiencies of policies in order to develop a new fiscal policy paradigm that is more in line with its stated goals.展开更多
On December 12,2023,Kenya celebrated its 60th anniversary of independence.Since independence,Kenya’s political operations have long been characterized by tribal politics,and during the 2022 elections,United Democrati...On December 12,2023,Kenya celebrated its 60th anniversary of independence.Since independence,Kenya’s political operations have long been characterized by tribal politics,and during the 2022 elections,United Democratic Alliance(UDA)presidential candidate William Samoei Ruto advocated a Hustler Movement with a platform focused on serving the interests of the underprivileged.The Movement,with its policy orientation of responding to the concerns of the hustler(refer to those forced to squeeze out a meagre living on the margins of society comparing to people from Kenya’s big-name families),seeks to move electoral politics away from the previous competition at the tribal and regional levels,and to construct an issue-oriented mode of political operation,which has given a new meaning to the development of Kenyan politics.Ruto became president in September 2022 after the Hustler Movement gained broad social support.Over the past years,the Ruto government has transformed the Hustler Movement’s policy ideas into a program of governance,reshaping Kenya’s political development agenda in practical terms.The influence of the Hustler Movement has become more and more visible,deeply reflecting the trend of Kenya’s political development over the past 60 years of independence.展开更多
文摘Nurses play a vital role on the front lines of health care and make outstanding contributions to people's health all over the world.In China,people's health has been remarkably improved in recent 100 years.By 2020,the average life expectancy has been increased to 77.8 years.
文摘Since the disintegration of the former Soviet Union, the United States and Rus-sia have gone through a tortuous road in forging their post-Cold War relation-ship. At present, they are neither bipolar rivals, nor strategic partners as initiatedin early 1990s. They have instead turned from maintaining amicability into copingwith the reality. Their discrepancies in terms of strategies and bilateral relationshave emerged one after another in recent years and became intensified especially af-ter Operation Desert Fox against Iraq by the United States and Britain
文摘1.This study is one of The Applied Economic Institutes Linkages Project(AERIL)which is funded by theCanadian International Development Agency(CIDA)and jiontly managed by The Conference Board of Canada(CBOC)and the International Trade Research Institute in China.It is jointly implemented by the Institute ofEconomic Research of the Chinese State Planning Commission and the North—South Institute of Canada。
文摘The article seeks to examine the East Look Policy(ELP)in Iran’s Foreign Policy(IFP)(2005-2013).We believe that states,due to different factors,may adopt different policies in their FP.So,the main research question is:Why did Iranian state adopt ELP in its FP in duration of Mahmoud Ahmadinejad era?With regard to the question,our hypothesis is“there are some factors in Iran’s internal environment that we called them micro-level factors and some variable in external environment that we called them macro-level variables in formation of ELP in IFP”.To prove this hypothesis,we use James Rosenau’s foreign policy theory that has been stood on two micro-and macrolevel analysis to examination of FP of any state.Regarding Rosenau’s theory,there are four factors on micro-level include:individual of policy-maker,his/her role in political system,social values,and governmental structure.In addition,in macro-level,there are some variables,such as the logic of anarchy,the action of other states(especially US),and nuclear sanctions imposed by the US and Western nations.
文摘This paper focuses on Iran's foreign policy towards the Caucasus and Central Asia regions in the post-Soviet Union era, using a theoretical approach which stresses the importance of historical and geographical contextualization for the analysis of foreign policy. The article's main argument is that Iranian foreign policy towards these regions in the last 25 years, although the result of a complex and multi-layered decision-making process, has been led by two unifying long-term objectives: regional stability and national security. In order to demonstrate this argument, the article undertakes a factual analysis focusing on the role Iran played during the main regional conflicts that have occurred since the Soviet Union's collapse in Central Asia and the Caucasus, as well as the diplomatic re-engagement Iran has been building with the countries of these two regions after the end of the Iran nuclear deal. Standard interpretations of Iran's foreign policy define it as a player with hegemonic ambitions whose foreign policy is mainly led by ideological factors. This paper assumes that foreign policy's analysis needs time and space contextualization. Once historical and geographical factors are taken into account----of which the most important are Iran's proximity to Russia and Afghanistan along with its international diplomatic isolation due to nuclear sanctions--then Iran's foreign policy in Central Asia and the Caucasus appears to be that of a regional power interested in maintaining the existing status quo. Stability and territorial integrity in these two regions in fact are seen by Teheran as necessary conditions for Iran's own territorial integrity and internal security. The paper is based on both secondary and primary sources, most of them official statements, all in the public domain.
文摘The twenty-first century globalization in international affairs has created an integration which appears unpreventable. This global integration had an impact on South Asia. This paper examines the significance of the United States defence strategy of combating terrorism and its policy of development. It intends to rethink of the United States defence strategy towards South Asia after September 2001 terrorist attack; whether it is to combat terrorism as stipulated in US national documents or whether it has other intentions. The latter part of this research presents the relevant interventions and defence actions that followed the US policy declarations. The intentions of long-term objectives are implicit in the chain of defence activities that followed to date. In this regard, the significance of this research is to understand how a peaceful atmosphere could be created in South Asia where global development automatically follows. The findings of this research have opened up a relevant and timely topic to inquire into. Specifically, this research encourages Sri Lanka to understand and rethink its foreign policy as a country in a post war period.
文摘The transatlantic alliance is the pillar of the EU’s foreign and security policy.However,as major readjustment happens to US foreign policy,EU-US relations undergo significant changes,and there are also tendencies of readjustment of EU’s foreign policy.A“Different”America Since the World War II,Europe has been in close alliance with the US,by which America provides Europe with security protection,and Europe willingly follows the US leadership and sits at its feet on all major global diplomatic and security issues.However,since taking office,the Trump administration has pushed forward the“America First”foreign policy,and made America no longer the same country as Europe used to be familiar with and trust,but conversely the biggest saboteur and violator of European interests.
基金Under the auspices of the National Natural Science Foundation of China(No.42277097,41425007)the High-level Team Project of China Agricultural University,Chongqing Technology Innovation and Application Development Project(cstc2021jscx-cylh0024)the Deutsche Forschungsgeminschaft(DFG)-328017493/GRK 2366(No.Sino-German IRTG AMAIZE-P)。
文摘Atmospheric nitrogen(N)deposition has experienced significant change because of anthropogenic emissions,thereby exerting a pronounced impact on global ecosystem services.With the rapid development of industry and agriculture and the swift expansion of urban areas in China since the 1980s,reactive nitrogen(Nr)emissions and N deposition have substantially increased.In pursuit of im-proving air quality,China has implemented a series of environmental protection policies and undertaken diverse measures to reduce pol-lutant emissions.This paper is a review of multivariate data sources of atmospheric N deposition based on the results of literature from 1980 to 2023,and the original data from 1980 to 2020 are summarized,counted and calculated.The main findings are as follows:1)the annual average atmospheric N deposition ranged from approximately 20-40 kg/(ha·yr),with the variability primarily linked to different assessment methods;2)regional disparities were evident in the spatial distribution of N deposition,with elevated values concentrated in areas with intense Nr emissions;3)atmospheric N deposition significantly declined after 2010,particularly the deposition of oxidized N,while reduced N deposition remained stable.These results reflect the effects of China's serious control policies on nitrogen oxide(NO.)emissions and strengthen the importance of agricultural NH3 emission mitigation.This study contributes to a comprehensive understanding of the N dynamics in the emission-deposition process,and provides a scientific foundation for the research of environmental protection,climate change,and sustainable development.
基金supported by the National Social Science Foundation of China(Grant No.22BTQ089).
文摘Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s artificial intelligence(AI)disruptive technology policy,and to put forward suggestions for optimizing China’s AI disruptive technology policy.Design/methodology/approach:Develop a three-dimensional analytical framework for“policy tools-policy actors-policy themes”and apply policy tools,social network analysis,and LDA topic model to conduct a comprehensive analysis of the utilization of policy tools,cooperative relationships among policy actors,and the trends in policy theme settings within China’s innovative AI technology policy.Findings:We find that the collaborative relationship among the policy actors of AI disruptive technology in China is insufficiently close.Marginal subjects exhibit low participation in the cooperation network and overly rely on central subjects,forming a“center-periphery”network structure.Policy tool usage is predominantly focused on supply and environmental types,with a severe inadequacy in demand-side policy tool utilization.Policy themes are diverse,encompassing topics such as“Intelligent Services”“Talent Cultivation”“Information Security”and“Technological Innovation”,which will remain focal points.Under the themes of“Intelligent Services”and“Intelligent Governance”,policy tool usage is relatively balanced,with close collaboration among policy entities.However,the theme of“AI Theoretical System”lacks a comprehensive understanding of tool usage and necessitates enhanced cooperation with other policy entities.Research limitations:The data sources and experimental scope are subject to certain limitations,potentially introducing biases and imperfections into the research results,necessitating further validation and refinement.Practical implications:The study introduces a three-dimensional analysis framework for disruptive technology policy texts,which is significant for formulating and enhancing disruptive technology policies.Originality/value:This study utilizes text mining and content analysis techniques to quantitatively analyze disruptive technology policy texts.It systematically evaluates China’s AI policies quantitatively,focusing on policy tools,policy actors,policy themes.The study uncovers the characteristics and deficiencies of current AI policies,offering recommendations for formulating and enhancing disruptive technology policies.
基金supported by the National Natural Science Foundation of China(Grant No.71974167).
文摘Purpose:The disseminating of academic knowledge to nonacademic audiences partly relies on the transition of subsequent citing papers.This study aims to investigate direct and indirect impact on technology and policy originating from transformative research based on ego citation network.Design/methodology/approach:Key Nobel Prize-winning publications(NPs)in fields of gene engineering and astrophysics are regarded as a proxy for transformative research.In this contribution,we introduce a network-structural indicator of citing patents to measure technological impact of a target article and use policy citations as a preliminary tool for policy impact.Findings:The results show that the impact on technology and policy of NPs are higher than that of their subsequent citation generations in gene engineering but not in astrophysics.Research limitations:The selection of Nobel Prizes is not balanced and the database used in this study,Dimensions,suffers from incompleteness and inaccuracy of citation links.Practical implications:Our findings provide useful clues to better understand the characteristics of transformative research in technological and policy impact.Originality/value:This study proposes a new framework to explore the direct and indirect impact on technology and policy originating from transformative research.
基金the National Natural Science Foundation of China(61922063,62273255,62150026)in part by the Shanghai International Science and Technology Cooperation Project(21550760900,22510712000)+1 种基金the Shanghai Municipal Science and Technology Major Project(2021SHZDZX0100)the Fundamental Research Funds for the Central Universities。
文摘Dear Editor,In this letter,the multi-objective optimal control problem of nonlinear discrete-time systems is investigated.A data-driven policy gradient algorithm is proposed in which the action-state value function is used to evaluate the policy.In the policy improvement process,the policy gradient based method is employed.
文摘China has proposed that it will strive to achieve the carbon neutrality target by 2060,providing strategic guidance for China to accelerate the transformation of its development mode and economic restructuring.But it is very challenging to achieve the target.It requires systematic top design as well as scientific formulation of long-term planning,while multiple institutional policies and institutional mechanism reforms need to be strengthened,such as rule of law,administration and economy,to form a systematic and effective incentive and constraint mechanism.Through the exploration and improvement of its three five-year plans,China has formed a low-carbon policy guarantee system led by binding targets,highlighting key industries and regions,and comprising planning,laws,administrative orders,pilot projects,markets,finance and taxation,and other aspects.However,there are still many problems,including the lack of clear policy paths in the near,medium and long term,the absence of key systems such as total carbon emission control system and climate legislation,poor inter-departmental communication and coordination mechanisms,and inadequate systems such as carbon markets and climate investment and financing.Finally,taking into account the current opportunities and challenges,we propose a low-carbon development policy guarantee system for China to move towards carbon neutrality.
基金supported by the National Key Research and Development Program of China(2021YFD1800200 and 2021YFC2301700)the National Natural Science Foundation of China(32192451)+1 种基金the Innovation Program of the Chinese Academy of Agricultural Sciences(CAASCSLPDCP-202301)the earmarked fund for CARS41(CARS-41).
文摘H9N2 virus has been widely distributed in wild birds and poultry around the world since its first emergence in the United States of America in 1966(Gu et al.2017;Carnaccini and Perez 2020).The virus appeared in chickens in China in the early 1990s,and over the last two decades has gradually become the dominant epidemic subtype(Sun and Liu 2015;Bi et al.2020).Although H9N2 virus infection alone cannot cause severe disease or death in poultry,H9N2 virus-infected birds experience a degree of egg production drop and can be easily infected by other pathogens,thus causing economic losses for poultry industry.
基金supported in part by the projects of the National Natural Science Foundation of China(62376059,41971340)Fujian Provincial Department of Science and Technology(2023XQ008,2023I0024,2021Y4019),Fujian Provincial Department of Finance(GY-Z230007,GYZ23012)Fujian Key Laboratory of Automotive Electronics and Electric Drive(KF-19-22001).
文摘Autonomous driving has witnessed rapid advancement;however,ensuring safe and efficient driving in intricate scenarios remains a critical challenge.In particular,traffic roundabouts bring a set of challenges to autonomous driving due to the unpredictable entry and exit of vehicles,susceptibility to traffic flow bottlenecks,and imperfect data in perceiving environmental information,rendering them a vital issue in the practical application of autonomous driving.To address the traffic challenges,this work focused on complex roundabouts with multi-lane and proposed a Perception EnhancedDeepDeterministic Policy Gradient(PE-DDPG)for AutonomousDriving in the Roundabouts.Specifically,themodel incorporates an enhanced variational autoencoder featuring an integrated spatial attention mechanism alongside the Deep Deterministic Policy Gradient framework,enhancing the vehicle’s capability to comprehend complex roundabout environments and make decisions.Furthermore,the PE-DDPG model combines a dynamic path optimization strategy for roundabout scenarios,effectively mitigating traffic bottlenecks and augmenting throughput efficiency.Extensive experiments were conducted with the collaborative simulation platform of CARLA and SUMO,and the experimental results show that the proposed PE-DDPG outperforms the baseline methods in terms of the convergence capacity of the training process,the smoothness of driving and the traffic efficiency with diverse traffic flow patterns and penetration rates of autonomous vehicles(AVs).Generally,the proposed PE-DDPGmodel could be employed for autonomous driving in complex scenarios with imperfect data.
基金support was obtained from the Fundamental Research Funds for the Central Universities[Grant No.JBK2307090].
文摘With intensifying global climate change,humanity is confronted with unparalleled environmental challenges and risks.This study employs the staggered difference-in-difference model to examine the relationship between climate policy and green innovation in the corporate financialization context.Using Chinese-listed company data from 2008 to 2020,our analysis reveals a favorable correlation between China’s carbon emission trading policy(CCTP)and advancements in green innovation.Furthermore,we find that the level of corporate financialization moderates this correlation,diminishing the driving effect of CCTP on green innovation.Additionally,results of heterogeneity analysis show that this moderating consequence is more evident in non-state owned and low-digitization enterprises compared with state-owned and high-digitization ones.Our findings contribute to the existing literature by clarifying the interaction between CCTP,green innovation,and corporate financialization.Our research provides valuable insights for policymakers and stakeholders seeking to strengthen climate policies and encourages green innovation in different types of businesses.
文摘In contrast to the traditional Western approach to macro-fiscal management,China’s proactive fiscal policy is founded on a people-centered development philosophy and,with distinctive Chinese characteristics,is a significant policy innovation of macroeconomic management in the Chinese modernization.Although there are notable distinctions between the Western“Keynesian”and the“nonKeynesian”schools of thought,both of these approaches’core policy goals and methodological roots are the same,composing the traditional Western macro-fiscal approach.This approach faces increasing real dilemmas.China’s proactive fiscal policy,however,places greater emphasis on future potential growth rates in addition to equilibrium between supply and demand,achieving a fiscal policy transformation with a new approach.In this paper we argue that with such a new approach,China should reconsider the nature and reasonable level of the fiscal deficit,the function and risk assessment criteria of government debt,the scope and effects of reductions in taxes and fees,its approach and focus of demand management,and the costs and resulting efficiencies of policies in order to develop a new fiscal policy paradigm that is more in line with its stated goals.
文摘On December 12,2023,Kenya celebrated its 60th anniversary of independence.Since independence,Kenya’s political operations have long been characterized by tribal politics,and during the 2022 elections,United Democratic Alliance(UDA)presidential candidate William Samoei Ruto advocated a Hustler Movement with a platform focused on serving the interests of the underprivileged.The Movement,with its policy orientation of responding to the concerns of the hustler(refer to those forced to squeeze out a meagre living on the margins of society comparing to people from Kenya’s big-name families),seeks to move electoral politics away from the previous competition at the tribal and regional levels,and to construct an issue-oriented mode of political operation,which has given a new meaning to the development of Kenyan politics.Ruto became president in September 2022 after the Hustler Movement gained broad social support.Over the past years,the Ruto government has transformed the Hustler Movement’s policy ideas into a program of governance,reshaping Kenya’s political development agenda in practical terms.The influence of the Hustler Movement has become more and more visible,deeply reflecting the trend of Kenya’s political development over the past 60 years of independence.