Synergistic reduction of carbon emissions and air pollution is the core means to address the two major strategic tasks of fundamentally improving the ecological environment and the‘Dual-carbon target’.The issue of s...Synergistic reduction of carbon emissions and air pollution is the core means to address the two major strategic tasks of fundamentally improving the ecological environment and the‘Dual-carbon target’.The issue of synergistic reduction at the provincial level needs to be addressed as a matter of urgency.Taking Henan Province,the largest economy in central China,as an example,this study uses environmentally extended input-output analysis and structural path analysis to identify the key sectors that contribute to CO_(2),SO_(2),and total particulate matter(TPM)emissions,and to sort out key emission pathways(e.g.,Final Demand→Sector…).The results indicate that S2(Mining of Fossil Energy),S10(Nonmetal Mineral Products),S11(Metal Smelting),S13(Power and Heat)and S17(Transportation)are mainly responsible for CO_(2),SO_(2),and TPM direct emissions on the production side,while S16(Construction),S12(Equipment)and S18(Services)account for more than 45%of CO_(2),SO_(2),and TPM embodied emissions on the consumption side.32 shared emission pathways are extracted from the top 100 pathways for CO_(2),SO_(2),and TPM emissions,which account for 27%-51%of total emissions in Henan Province.P9(Export→Nonmetal Mineral Products),P10(Export→Metal Smelting)and P21(Gross Capital Formation→Construction→Nonmetal Mineral Products)are the leading paths responsible for embodied emissions.The research results provide the foundation and guidance for well-designed mitigation policies,as well as a reference for better synergistic control in provinces facing similar situations.展开更多
Purpose-This study aims to reveal the technological development trajectories within the fuzzy field,addressing the long-standing gap between the extensive application of fuzzy technologies and the lack of a comprehens...Purpose-This study aims to reveal the technological development trajectories within the fuzzy field,addressing the long-standing gap between the extensive application of fuzzy technologies and the lack of a comprehensive,data-driven understanding of their developmental logic and evolution.Design/methodology/approach-An integrated methodological framework combining structural topic modeling(STM)and main path analysis(MPA)is developed.A total of 43,905 patents related to fuzzy technologies were collected from the Derwent Innovation Index.STM is applied to identify 12 representative topics within the fuzzy technology field,followed by the construction of topic-specific citation networks.MPA is then used to extract the core development paths across these topics,capturing structural dynamics and knowledge diffusion.This integration enables a multidimensional exploration of topic structures and technology trajectories,providing a frame of reference for analyzing other emerging technologies.Findings-The combined STM-MPA approach effectively identifies the classification and developmental trajectories of fuzzy-related technologies.Results highlight topic-specific knowledge flows and inter-topic linkages,offering new insights into the internal evolution and external integration of fuzzy technologies.The study demonstrates how different subfields of fuzzy technologies have progressed and interacted over time.Originality/value-This study is among the first to systematically explore the development of fuzzy technologies using large-scale patent data and a hybrid analytical framework.By integrating topic modeling with citation analysis,it captures both topic patterns and development paths.The approach enhances existing methods in technology analysis and offers new insights for innovation research,policy design and enterprise strategy.展开更多
Nonlinear solution of reinforced concrete structures, particularly complete load-deflection response, requires tracing of the equilibrium path and proper treatment of the limit and bifurcation points. In this regard, ...Nonlinear solution of reinforced concrete structures, particularly complete load-deflection response, requires tracing of the equilibrium path and proper treatment of the limit and bifurcation points. In this regard, ordinary solution techniques lead to instability near the limit points and also have problems in case of snap-through and snap-back. Thus they fail to predict the complete load-displacement response. The arc-length method serves the purpose well in principle, received wide acceptance in finite element analysis, and has been used extensively. However modifications to the basic idea are vital to meet the particular needs of the analysis. This paper reviews some of the recent developments of the method in the last two decades, with particular emphasis on nonlinear finite element analysis of reinforced concrete structures.展开更多
基金supported by the National Natural Science Foundation of China(No.42001246)the Energy Foundation(No.G-2209-34120).
文摘Synergistic reduction of carbon emissions and air pollution is the core means to address the two major strategic tasks of fundamentally improving the ecological environment and the‘Dual-carbon target’.The issue of synergistic reduction at the provincial level needs to be addressed as a matter of urgency.Taking Henan Province,the largest economy in central China,as an example,this study uses environmentally extended input-output analysis and structural path analysis to identify the key sectors that contribute to CO_(2),SO_(2),and total particulate matter(TPM)emissions,and to sort out key emission pathways(e.g.,Final Demand→Sector…).The results indicate that S2(Mining of Fossil Energy),S10(Nonmetal Mineral Products),S11(Metal Smelting),S13(Power and Heat)and S17(Transportation)are mainly responsible for CO_(2),SO_(2),and TPM direct emissions on the production side,while S16(Construction),S12(Equipment)and S18(Services)account for more than 45%of CO_(2),SO_(2),and TPM embodied emissions on the consumption side.32 shared emission pathways are extracted from the top 100 pathways for CO_(2),SO_(2),and TPM emissions,which account for 27%-51%of total emissions in Henan Province.P9(Export→Nonmetal Mineral Products),P10(Export→Metal Smelting)and P21(Gross Capital Formation→Construction→Nonmetal Mineral Products)are the leading paths responsible for embodied emissions.The research results provide the foundation and guidance for well-designed mitigation policies,as well as a reference for better synergistic control in provinces facing similar situations.
基金supported by the National Statistical Science Research Project of China(No.2024LY021).
文摘Purpose-This study aims to reveal the technological development trajectories within the fuzzy field,addressing the long-standing gap between the extensive application of fuzzy technologies and the lack of a comprehensive,data-driven understanding of their developmental logic and evolution.Design/methodology/approach-An integrated methodological framework combining structural topic modeling(STM)and main path analysis(MPA)is developed.A total of 43,905 patents related to fuzzy technologies were collected from the Derwent Innovation Index.STM is applied to identify 12 representative topics within the fuzzy technology field,followed by the construction of topic-specific citation networks.MPA is then used to extract the core development paths across these topics,capturing structural dynamics and knowledge diffusion.This integration enables a multidimensional exploration of topic structures and technology trajectories,providing a frame of reference for analyzing other emerging technologies.Findings-The combined STM-MPA approach effectively identifies the classification and developmental trajectories of fuzzy-related technologies.Results highlight topic-specific knowledge flows and inter-topic linkages,offering new insights into the internal evolution and external integration of fuzzy technologies.The study demonstrates how different subfields of fuzzy technologies have progressed and interacted over time.Originality/value-This study is among the first to systematically explore the development of fuzzy technologies using large-scale patent data and a hybrid analytical framework.By integrating topic modeling with citation analysis,it captures both topic patterns and development paths.The approach enhances existing methods in technology analysis and offers new insights for innovation research,policy design and enterprise strategy.
文摘Nonlinear solution of reinforced concrete structures, particularly complete load-deflection response, requires tracing of the equilibrium path and proper treatment of the limit and bifurcation points. In this regard, ordinary solution techniques lead to instability near the limit points and also have problems in case of snap-through and snap-back. Thus they fail to predict the complete load-displacement response. The arc-length method serves the purpose well in principle, received wide acceptance in finite element analysis, and has been used extensively. However modifications to the basic idea are vital to meet the particular needs of the analysis. This paper reviews some of the recent developments of the method in the last two decades, with particular emphasis on nonlinear finite element analysis of reinforced concrete structures.
