Lug joints are preferred joineries for transferring heavy loads to parent components in aerospace vehicles.They experience corrosion due to environmental conditions,improper surface finishes and rubbing displacement b...Lug joints are preferred joineries for transferring heavy loads to parent components in aerospace vehicles.They experience corrosion due to environmental conditions,improper surface finishes and rubbing displacement between the pin and lug-hole.This causes damage of different sizes and shapes near the lug-hole.Stiffness degradation due to corrosion-induced damage is modelled as a through-pit at one of the identified critical locations through stress analysis.The effect of this pit on fatigue crack initiation life is estimated.Lug-hole is pre-stressed by cold-working and the benefits of inducing plastic wake on the intended performance of the lug joint during the damages due to corrosion are brought out and compared with non-cold-worked lug-hole.Numerical analysis is performed on this lug joint with pressfit.The results obtained highlight the benefits of cold-working and the methodology can be extended to damage growth and analyse the effect of surface treatments for better structural integrity of components of aerospace vehicles.展开更多
It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Ta...It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Taiyuan Metropolitan Area(TMA)in central China as a case study,this paper examines the evolutionary process and characteristics of population agglomeration from 2000 to 2020,and identifies factors associated with agglomeration and their spatial effects.The findings indicated that:1)against the background of sustained population shrinkage in the provincial area,the TMA showed a demographic trend of steady increase,albeit with a decelerated growth rate.In the metropolitan area,urban population size continued to grow rapidly,whereas the rural areas endured sustained losses.Disparities in city size continued to widen,and the polarization of concentrated population in the core cities kept increasing.2)Agglomerations in both secondary and service industries had significant positive effects on local population agglomeration,with the former effect being stronger.Regional economic development,government fiscal expenditure,and financial advancement all contributed to facilitating local population clustering.From a spatial spillover perspective,service agglomeration and financial development promoted population agglomeration in surrounding areas.Conversely,fiscal expenditure inhibited such agglomeration.As for industrial agglomeration and regional economic development,their spatial spillover effects were non-significant.The results obtained reveal several policy implications aimed at enhancing the population agglomeration capacity of the metropolitan area in underdeveloped regions during the new era.展开更多
“Traditional Chinese medicine(TCM)is very popular in Cambodia because it can treat a variety of diseases,”said Nhek Soparama,ministercounselor of the Embassy of Cambodia in China,at the 2024 China-ASEAN Traditional ...“Traditional Chinese medicine(TCM)is very popular in Cambodia because it can treat a variety of diseases,”said Nhek Soparama,ministercounselor of the Embassy of Cambodia in China,at the 2024 China-ASEAN Traditional Chinese Medicine Industry Exchange and Promotion Conference in Taiyuan,Shanxi Province,on July 26.“Over the past two years,more than 20,000 Cambodians have received TCM treatment.”展开更多
On June 23-25,2023,The 14th National Conference of Chinese Society for Scientometrics and Informetrics(CSSI)was successfully held in Taiyuan,Shanxi Province.The meeting was hosted by Chinese Society for Scientometrics...On June 23-25,2023,The 14th National Conference of Chinese Society for Scientometrics and Informetrics(CSSI)was successfully held in Taiyuan,Shanxi Province.The meeting was hosted by Chinese Society for Scientometrics and Informetrics(CSSI)、Chinese Academy of Science and Education Evaluation(CASEE)and Academy of Data Science and Informetrics(ADSI)of Hangzhou Dianzi University、Research Center for Chinese Science Evaluation(RCCSE)of Wuhan University and co-organized by School of Management of Shanxi Medical University.More than 1000 participants virtually and over 250 participants physically attended the conference.展开更多
文摘Lug joints are preferred joineries for transferring heavy loads to parent components in aerospace vehicles.They experience corrosion due to environmental conditions,improper surface finishes and rubbing displacement between the pin and lug-hole.This causes damage of different sizes and shapes near the lug-hole.Stiffness degradation due to corrosion-induced damage is modelled as a through-pit at one of the identified critical locations through stress analysis.The effect of this pit on fatigue crack initiation life is estimated.Lug-hole is pre-stressed by cold-working and the benefits of inducing plastic wake on the intended performance of the lug joint during the damages due to corrosion are brought out and compared with non-cold-worked lug-hole.Numerical analysis is performed on this lug joint with pressfit.The results obtained highlight the benefits of cold-working and the methodology can be extended to damage growth and analyse the effect of surface treatments for better structural integrity of components of aerospace vehicles.
基金Under the auspices of the Humanities and Social Sciences Fund of the Ministry of Education of China (No.20YJC790107)Planning Project for Philosophy and Social Sciences of Shanxi Province (No.2021YJ040)Special Foundation for Science and Development of Shanxi Province (No.202204031401052)。
文摘It is of importance to enhance the urban areas'capacity for population aggregation in underdeveloped regions,aiming to rectify the imbalanced and insufficient pattern of economic development in China.Taking the Taiyuan Metropolitan Area(TMA)in central China as a case study,this paper examines the evolutionary process and characteristics of population agglomeration from 2000 to 2020,and identifies factors associated with agglomeration and their spatial effects.The findings indicated that:1)against the background of sustained population shrinkage in the provincial area,the TMA showed a demographic trend of steady increase,albeit with a decelerated growth rate.In the metropolitan area,urban population size continued to grow rapidly,whereas the rural areas endured sustained losses.Disparities in city size continued to widen,and the polarization of concentrated population in the core cities kept increasing.2)Agglomerations in both secondary and service industries had significant positive effects on local population agglomeration,with the former effect being stronger.Regional economic development,government fiscal expenditure,and financial advancement all contributed to facilitating local population clustering.From a spatial spillover perspective,service agglomeration and financial development promoted population agglomeration in surrounding areas.Conversely,fiscal expenditure inhibited such agglomeration.As for industrial agglomeration and regional economic development,their spatial spillover effects were non-significant.The results obtained reveal several policy implications aimed at enhancing the population agglomeration capacity of the metropolitan area in underdeveloped regions during the new era.
文摘“Traditional Chinese medicine(TCM)is very popular in Cambodia because it can treat a variety of diseases,”said Nhek Soparama,ministercounselor of the Embassy of Cambodia in China,at the 2024 China-ASEAN Traditional Chinese Medicine Industry Exchange and Promotion Conference in Taiyuan,Shanxi Province,on July 26.“Over the past two years,more than 20,000 Cambodians have received TCM treatment.”
文摘On June 23-25,2023,The 14th National Conference of Chinese Society for Scientometrics and Informetrics(CSSI)was successfully held in Taiyuan,Shanxi Province.The meeting was hosted by Chinese Society for Scientometrics and Informetrics(CSSI)、Chinese Academy of Science and Education Evaluation(CASEE)and Academy of Data Science and Informetrics(ADSI)of Hangzhou Dianzi University、Research Center for Chinese Science Evaluation(RCCSE)of Wuhan University and co-organized by School of Management of Shanxi Medical University.More than 1000 participants virtually and over 250 participants physically attended the conference.
