Being used more and more widely in engineering,AlSi alloys comprise about 80%of all kinds of aluminum alloys,which are the most widely utilized nonferrous alloys.Although most Al-Si alloys consist of multiple componen...Being used more and more widely in engineering,AlSi alloys comprise about 80%of all kinds of aluminum alloys,which are the most widely utilized nonferrous alloys.Although most Al-Si alloys consist of multiple components,the eutectics in the structure accounts for 50%-90%of the sum volume of such alloys.Therefore,understanding the modification mechanism and function rules of the AlSi eutectic solidification is the technical key in controlling the structures and properties of such casting alloys.The present paper chiefly reviews recent investigation developments and important conclusions along the lines of the functions of modification elements and their modification mechanism in the eutectic solidification of Al-Si alloys.展开更多
基于乡村地区老龄化日益严峻的背景,文章以乡村老年友好社区为主题,对Web of Science核心合集数据库中相关文献进行知识图谱量化分析,并根据关键词共现、国家—地区合作网络、研究热点和趋势等,将2003—2021年国外乡村老年友好社区的研...基于乡村地区老龄化日益严峻的背景,文章以乡村老年友好社区为主题,对Web of Science核心合集数据库中相关文献进行知识图谱量化分析,并根据关键词共现、国家—地区合作网络、研究热点和趋势等,将2003—2021年国外乡村老年友好社区的研究分为萌芽、起步、高速增长3个发展阶段。同时,依据关键词聚类分析结果与关键词出现频次,重点分析社区发展、人本观念和社会参与、交通设施与医疗卫生服务设施等主题内容的研究现状,总结出现有研究呈现单一要素向包含社会、物质等多维度综合环境要素转变趋势,具有明显的问题导向、社会导向与政策导向,未来研究与实践应使用动态发展视角,以应对乡村老年友好社区面临的不断变化的挑战。展开更多
Heritage resources provide profound historical and cultural connotations and earners for the cultural creative industry the development of cultural creative industry also promotes the sustainable development of herita...Heritage resources provide profound historical and cultural connotations and earners for the cultural creative industry the development of cultural creative industry also promotes the sustainable development of heritage resources.Taking Jingdezhen for example,this paper analyzed local heritage resources and development of local cultural creative industry,on this basis proposed that key efforts should be devoted to develop ceramic culture creative industry,cultivate industrial agglomerations of considerable scale,and form industrial chain,in order to realize the high-efficiency transition from heritage resources to cultural creative industry,and eventually improve cultural taste and build the characteristic brand of the city.展开更多
Facing the development and change of contemporary urban and rural planning discipline and social talent demand,it is imperative to develop the talent training of urban and rural planning major.Based on the teaching pl...Facing the development and change of contemporary urban and rural planning discipline and social talent demand,it is imperative to develop the talent training of urban and rural planning major.Based on the teaching platform,this study constructed a perfect talent training mode,implemented modular teaching,took the occupation as the guidance,carried out the application-oriented talent training,and delivered high-quality professionals to the society.展开更多
To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed u...To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed under different impact energies. The work hardening mechanism was also analyzed. The results show that the best strain hardening effect could be received only when the impact energy reaches or exceeds the critical impact energy. The microstructural observations reveal that dislocations, stacking faults and twins increase with raising impact energy of the tested specimens. The hardening mechanism changes at different hardening degrees. It is mainly dislocation and slip hardening below the critical impact energy, but it changes to the twinning hardening mechanism when the impact energy is above the critical impact energy.展开更多
In order to solve the contradiction between the rapid growth of urban motor vehicles and the lack of road traffic resources to fundamentally improve the problem of "difficult driving and difficult parking", ...In order to solve the contradiction between the rapid growth of urban motor vehicles and the lack of road traffic resources to fundamentally improve the problem of "difficult driving and difficult parking", it is necessary to carry out scientific planning and design of urban parking lots. The study analyzed the main problems of urban parking, discussed the planning principles and countermeasures of parking lot planning, and briefly introduced the practical experience of the special parking lot planning of the central urban area in Xiajiang County, Ji’an City, Jiangxi Province. It is hoped that through parking lot planning, the contradiction between supply and demand of urban parking can be effectively alleviated and the urban traffic environment can be improved.展开更多
Shenzhen Special Economic Zone has achieved remarkable progress through the 30-year development. The change from the past frontier town to the current megacity makes urban planning practices of Shenzhen City significa...Shenzhen Special Economic Zone has achieved remarkable progress through the 30-year development. The change from the past frontier town to the current megacity makes urban planning practices of Shenzhen City significant for the exploration of other Chinese cities. Combining with significant planning events of Shenzhen City, this paper divided its urban planning history into 3 stages: exploration, transformation and improvement, and particularly introduced its overall planning, urban design, and statutory plan, and finally proposed suggestions for other cities' development on the basis of urban planning history of Shenzhen.展开更多
The ageing of society has been considered as one of the three major social problems in the twentyfirst century. Since 2000, China has entered the ageing society formally, and become one of the earliest developing coun...The ageing of society has been considered as one of the three major social problems in the twentyfirst century. Since 2000, China has entered the ageing society formally, and become one of the earliest developing countries that witness the population ageing, and also the countries with the largest ageing population in the world. Problems for supporting the aged have become crucial social problems of China. This paper, on the basis of analyzing changing physical and mental characteristics and needs of the elders, proposed different living models such as living together, living alone, living close, and social nursing facilities.展开更多
It directly affects the inner and outer aesthesis, wind noise and safety of the vehicle to the BIW width dimensional consistency. In this paper, the body in white （BIW） width dimensional consistency control methods ...It directly affects the inner and outer aesthesis, wind noise and safety of the vehicle to the BIW width dimensional consistency. In this paper, the body in white （BIW） width dimensional consistency control methods had been carried on the concrete discussion and research. So the mechanism of virtual size parts were introduced in detail and the mechanism of the width of the BIW were analyzed. And this paper recommended the partial tolerance design method, DESIGN GAP design method and overlapping parts structure design method. Then the applications of these methods were explained to develop new product. The result that practiced control strategy to new vehicle practice showed： the BIW width dimensional consistency can be controlled within ±1.0 mm. The control strategy can realize the robust design of the new product dimension and enrich the company dimensional database.展开更多
文摘Being used more and more widely in engineering,AlSi alloys comprise about 80%of all kinds of aluminum alloys,which are the most widely utilized nonferrous alloys.Although most Al-Si alloys consist of multiple components,the eutectics in the structure accounts for 50%-90%of the sum volume of such alloys.Therefore,understanding the modification mechanism and function rules of the AlSi eutectic solidification is the technical key in controlling the structures and properties of such casting alloys.The present paper chiefly reviews recent investigation developments and important conclusions along the lines of the functions of modification elements and their modification mechanism in the eutectic solidification of Al-Si alloys.
文摘基于乡村地区老龄化日益严峻的背景,文章以乡村老年友好社区为主题,对Web of Science核心合集数据库中相关文献进行知识图谱量化分析,并根据关键词共现、国家—地区合作网络、研究热点和趋势等,将2003—2021年国外乡村老年友好社区的研究分为萌芽、起步、高速增长3个发展阶段。同时,依据关键词聚类分析结果与关键词出现频次,重点分析社区发展、人本观念和社会参与、交通设施与医疗卫生服务设施等主题内容的研究现状,总结出现有研究呈现单一要素向包含社会、物质等多维度综合环境要素转变趋势,具有明显的问题导向、社会导向与政策导向,未来研究与实践应使用动态发展视角,以应对乡村老年友好社区面临的不断变化的挑战。
基金Sponsored by Humanities and Social Science Program of Jiangxi Provincial Universities and Colleges(JC1434)2014"Twelfth Five-year Plan"of Jiangxi Provincial Social Science Program(14SH05)Jiangxi Provincial Art and Science Program(YG2014113)
文摘Heritage resources provide profound historical and cultural connotations and earners for the cultural creative industry the development of cultural creative industry also promotes the sustainable development of heritage resources.Taking Jingdezhen for example,this paper analyzed local heritage resources and development of local cultural creative industry,on this basis proposed that key efforts should be devoted to develop ceramic culture creative industry,cultivate industrial agglomerations of considerable scale,and form industrial chain,in order to realize the high-efficiency transition from heritage resources to cultural creative industry,and eventually improve cultural taste and build the characteristic brand of the city.
基金Sponsored by Research Project of Degree and Graduate Education and Teaching Reform in Jiangxi Province(JXYJG-2019-058)
文摘Facing the development and change of contemporary urban and rural planning discipline and social talent demand,it is imperative to develop the talent training of urban and rural planning major.Based on the teaching platform,this study constructed a perfect talent training mode,implemented modular teaching,took the occupation as the guidance,carried out the application-oriented talent training,and delivered high-quality professionals to the society.
基金supported by the Special Foundation for Introducing and Selecting Talent in Hefei University of Technology, China (No. 2004000197)
文摘To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed under different impact energies. The work hardening mechanism was also analyzed. The results show that the best strain hardening effect could be received only when the impact energy reaches or exceeds the critical impact energy. The microstructural observations reveal that dislocations, stacking faults and twins increase with raising impact energy of the tested specimens. The hardening mechanism changes at different hardening degrees. It is mainly dislocation and slip hardening below the critical impact energy, but it changes to the twinning hardening mechanism when the impact energy is above the critical impact energy.
文摘In order to solve the contradiction between the rapid growth of urban motor vehicles and the lack of road traffic resources to fundamentally improve the problem of "difficult driving and difficult parking", it is necessary to carry out scientific planning and design of urban parking lots. The study analyzed the main problems of urban parking, discussed the planning principles and countermeasures of parking lot planning, and briefly introduced the practical experience of the special parking lot planning of the central urban area in Xiajiang County, Ji’an City, Jiangxi Province. It is hoped that through parking lot planning, the contradiction between supply and demand of urban parking can be effectively alleviated and the urban traffic environment can be improved.
基金Sponsored by"Twelfth Five-year Plan"of Jiangxi Provincial Social Science Program(14SH05)Humanities and Social Science Program of Jiangxi Provincial Universities and Colleges(JC1434)Jiangxi Provincial Arts and Science Program(YG2014113)
文摘Shenzhen Special Economic Zone has achieved remarkable progress through the 30-year development. The change from the past frontier town to the current megacity makes urban planning practices of Shenzhen City significant for the exploration of other Chinese cities. Combining with significant planning events of Shenzhen City, this paper divided its urban planning history into 3 stages: exploration, transformation and improvement, and particularly introduced its overall planning, urban design, and statutory plan, and finally proposed suggestions for other cities' development on the basis of urban planning history of Shenzhen.
基金Sponsored by Humanities and Social Sciences Program of Jiangsu Universities and Colleges(JC1434)2014 Planning Program of"Twelfth Five-year Plan"of Jiangxi Social Sciences(14SH05)2014 Jiangxi Provincial Art and Scientific Planning Program(YG2014113)
文摘The ageing of society has been considered as one of the three major social problems in the twentyfirst century. Since 2000, China has entered the ageing society formally, and become one of the earliest developing countries that witness the population ageing, and also the countries with the largest ageing population in the world. Problems for supporting the aged have become crucial social problems of China. This paper, on the basis of analyzing changing physical and mental characteristics and needs of the elders, proposed different living models such as living together, living alone, living close, and social nursing facilities.
文摘It directly affects the inner and outer aesthesis, wind noise and safety of the vehicle to the BIW width dimensional consistency. In this paper, the body in white （BIW） width dimensional consistency control methods had been carried on the concrete discussion and research. So the mechanism of virtual size parts were introduced in detail and the mechanism of the width of the BIW were analyzed. And this paper recommended the partial tolerance design method, DESIGN GAP design method and overlapping parts structure design method. Then the applications of these methods were explained to develop new product. The result that practiced control strategy to new vehicle practice showed： the BIW width dimensional consistency can be controlled within ±1.0 mm. The control strategy can realize the robust design of the new product dimension and enrich the company dimensional database.
