With the development of society and the advancement of science and technology,the street texture,architectural style,and spatial pattern of many traditional villages have been destroyed,which has seriously affected th...With the development of society and the advancement of science and technology,the street texture,architectural style,and spatial pattern of many traditional villages have been destroyed,which has seriously affected the style and environment of the entire village.To protect features of traditional villages and to better inherit the history and culture,the protection and development status of traditional villages must be explored,the public space of traditional villages should be evaluated from different perspectives and the public space issues summarized.Then,corresponding transformation and renewal strategies should be proposed.展开更多
Urban subway station is a key node related to urban social,political,economic and cultural activities.There are some differences in the location,function orientation,land use and flow characteristics of different type...Urban subway station is a key node related to urban social,political,economic and cultural activities.There are some differences in the location,function orientation,land use and flow characteristics of different types of stations in the city.This paper mainly used Tyson’s edge,kernel density analysis,chart analysis and other methods to classify the functional types of 412,393 POI data of 26 stations along Metro he results showed that the spatial distribution of Beijing Metro Line 6 was mainly divided into 3 categories,subway stations were divided into 4 categories.Among them,type A sites were divided into composite and single types,and the distribution characteristics of the 6 types of sites were quite different.Based on the qualitative and quantitative analysis of POI point data,this method can quickly classify and analyze the characteristics of stations along Line 6 in Beijing,which also has theoretical and practical value for the planning of urban subway lines.展开更多
As an important urban infrastructure,rail transit not only has transportation function,but also has a close connection and harmonious development with the surrounding urban space.Taking Beijing Metro Line 5 as an exam...As an important urban infrastructure,rail transit not only has transportation function,but also has a close connection and harmonious development with the surrounding urban space.Taking Beijing Metro Line 5 as an example,each station of Beijing Metro Line 5 was analyzed by GIS software and Echarts chart based on POI data.The functions of subway site type were divided into main function,secondary function and no significant function,and various types of sites within the main functional characteristics of urban functions were discussed in details.The paper presents a new method for identifying urban functional features,which can be applied to not only other metro stations in Beijing but also the same type of cities.Moreover,it lays a foundation for the research of rail transit subway stations and their related researches.展开更多
作为一种新型碳基析氢反应催化剂,磷掺杂炭材料近年来已引起了较大关注。然而到目前为止,磷掺杂炭材料中的C―P物种对于氢析出活性的作用尚未被揭示。为了探讨碳基催化剂中C―P物种对其氢析出性能的影响,制备了4种具有不同石墨、吡啶、...作为一种新型碳基析氢反应催化剂,磷掺杂炭材料近年来已引起了较大关注。然而到目前为止,磷掺杂炭材料中的C―P物种对于氢析出活性的作用尚未被揭示。为了探讨碳基催化剂中C―P物种对其氢析出性能的影响,制备了4种具有不同石墨、吡啶、吡咯类磷物种分布的磷掺杂碳纳米管,并探讨了这3种磷物种的含量和氢析出活性之间的关系。结果表明在酸性介质中,一种在电流密度为10 mA cm^(−2)时过电位为0.266 V的磷掺杂碳纳米管展现出较高的氢析出活性。同时,密度泛函理论计算表明较高的氢析出性能主要是由石墨磷分解产生的五元环和九元环缺陷所引起,这为磷掺杂碳基催化剂表面的析氢反应提供更为深入的理解。展开更多
基金Sponsored by National Natural Science Foundation of China(51808004)。
文摘With the development of society and the advancement of science and technology,the street texture,architectural style,and spatial pattern of many traditional villages have been destroyed,which has seriously affected the style and environment of the entire village.To protect features of traditional villages and to better inherit the history and culture,the protection and development status of traditional villages must be explored,the public space of traditional villages should be evaluated from different perspectives and the public space issues summarized.Then,corresponding transformation and renewal strategies should be proposed.
基金Beijing Municipal Education Commission Social Science Project(KM202010009002)Beijing Municipal Social Science Foundation(22GLC062)“Young YuYou Talents Training Plan”of North China University of Technology.
文摘Urban subway station is a key node related to urban social,political,economic and cultural activities.There are some differences in the location,function orientation,land use and flow characteristics of different types of stations in the city.This paper mainly used Tyson’s edge,kernel density analysis,chart analysis and other methods to classify the functional types of 412,393 POI data of 26 stations along Metro he results showed that the spatial distribution of Beijing Metro Line 6 was mainly divided into 3 categories,subway stations were divided into 4 categories.Among them,type A sites were divided into composite and single types,and the distribution characteristics of the 6 types of sites were quite different.Based on the qualitative and quantitative analysis of POI point data,this method can quickly classify and analyze the characteristics of stations along Line 6 in Beijing,which also has theoretical and practical value for the planning of urban subway lines.
基金Sponsored by Beijing Municipal Social Science Foundation“Research on Service Function Renewal of Beijing Subway Station Living Circle Driven by Multiple Big Data”(22GLC062)Beijing Municipal Education Commission Social Science Project(KM202010009002)“Young Yu You Talents Training Plan”of North China University of Technology。
文摘As an important urban infrastructure,rail transit not only has transportation function,but also has a close connection and harmonious development with the surrounding urban space.Taking Beijing Metro Line 5 as an example,each station of Beijing Metro Line 5 was analyzed by GIS software and Echarts chart based on POI data.The functions of subway site type were divided into main function,secondary function and no significant function,and various types of sites within the main functional characteristics of urban functions were discussed in details.The paper presents a new method for identifying urban functional features,which can be applied to not only other metro stations in Beijing but also the same type of cities.Moreover,it lays a foundation for the research of rail transit subway stations and their related researches.
文摘作为一种新型碳基析氢反应催化剂,磷掺杂炭材料近年来已引起了较大关注。然而到目前为止,磷掺杂炭材料中的C―P物种对于氢析出活性的作用尚未被揭示。为了探讨碳基催化剂中C―P物种对其氢析出性能的影响,制备了4种具有不同石墨、吡啶、吡咯类磷物种分布的磷掺杂碳纳米管,并探讨了这3种磷物种的含量和氢析出活性之间的关系。结果表明在酸性介质中,一种在电流密度为10 mA cm^(−2)时过电位为0.266 V的磷掺杂碳纳米管展现出较高的氢析出活性。同时,密度泛函理论计算表明较高的氢析出性能主要是由石墨磷分解产生的五元环和九元环缺陷所引起,这为磷掺杂碳基催化剂表面的析氢反应提供更为深入的理解。
