In order to research the feasibility of using the selective adsorption principle to achieve automatic shaping of nano patterns,in this study,using the liquid gallium as the conductive ink and graphene as the printing ...In order to research the feasibility of using the selective adsorption principle to achieve automatic shaping of nano patterns,in this study,using the liquid gallium as the conductive ink and graphene as the printing plate surface,by changing the surface wettability of patterned areas on the nanoscale of graphene printed boards,the automatic formation of liquid gallium patterns on the graphene printed plate surface was simulated.The results indicated that liquid gallium can achieve automatic patterning on the surface of graphene patterned areas;the greater the interaction energy between gallium and carbon atoms,the clearer the pattern;gallium liquid is prone to remain in complex local positions of the pattern,making it difficult to shape the pattern;if the spacing between adjacent pattern lines is too large or too small,it will result in residual gallium liquid between the lines;increasing the thickness of the gallium film will cause the pattern to expand beyond the boundary,but increasing the thickness of the gallium film can also enhance the thickness and uniformity of the pattern lines.In summary,the principle of selective adsorption can be used to achieve the automatic formation of nano patterns,and the pattern formation effect is influenced by factors such as atomic interaction energy and pattern configuration.展开更多
The temporal-spatial pattern of linear cultural heritage in the context of the tourism industry is closely linked to heritage management.Using the 1800 km long Beijing-Hangzhou Grand Canal as an example,this study com...The temporal-spatial pattern of linear cultural heritage in the context of the tourism industry is closely linked to heritage management.Using the 1800 km long Beijing-Hangzhou Grand Canal as an example,this study compared the dynamic evolution of tourism businesses in Beijing,Liaocheng,and Yangzhou at three time points(2010,2015,and 2019)via nearest neighbor analysis,kernel density estimation,and the standard deviational ellipse.Next,a Geo-detector was used to examine the influencing factors.The results reveal significant growth regardless of the quantity or agglomeration degree from 2010 to 2019,and the direction of industrial expansion is consistent with the flow direction of the canal.Moreover,the explanatory powers of factors related to socioeconomic development and canal resources are obviously stronger than those of the natural environment.The findings of this study offer theoretical constructs and policy recommendations for the sustainable development of the Beijing-Hangzhou Grand Canal and other linear cultural heritage sites.展开更多
Determining how to achieve sustainable development and protection of historical districts is a worthwhile research topic.As a vital way to update urban space,tourism development in historical districts is an effective...Determining how to achieve sustainable development and protection of historical districts is a worthwhile research topic.As a vital way to update urban space,tourism development in historical districts is an effective tool for redistributing urban functions and increasing urban vitality.This paper takes the Insa-dong in South Korea as a case study for the evaluation of tourist satisfaction in historical districts,based on 550 questionnaires.The questionnaire contains 33 evaluation indicators,and the subjects’subjective judgment and satisfaction with Insa-dong are measured in the form of the Likert scale.Using SPSS to analyze tourists’satisfaction with historical districts,this studyfinds that:(1)The tourist satisfaction evaluation of Insa-dong includes six dimensions in total:"Embodiment of historical elements","The blend of tradition and modernity","Industry distribution and type","Consumer demand","Street layout and function"and"Landscaping".(2)"The blend of tradition and modernity"has the highest weight while"Industry distribution and type"has the lowest one in the analysis of factors influencing overall satisfaction.(3)The analysis of the common factor weights and the common factor satisfaction levels shows that"The blend of tradition and modernity"and"Street layout and function"are the parts that need to be improved."Consumer demand"also has a lot of room for promotion.The research results will be beneficial for enhancing the tourist experiences of historical districts and they provide a theoretical basis and practical experience reference for effective protection and sustainable development of historical districts.展开更多
文摘In order to research the feasibility of using the selective adsorption principle to achieve automatic shaping of nano patterns,in this study,using the liquid gallium as the conductive ink and graphene as the printing plate surface,by changing the surface wettability of patterned areas on the nanoscale of graphene printed boards,the automatic formation of liquid gallium patterns on the graphene printed plate surface was simulated.The results indicated that liquid gallium can achieve automatic patterning on the surface of graphene patterned areas;the greater the interaction energy between gallium and carbon atoms,the clearer the pattern;gallium liquid is prone to remain in complex local positions of the pattern,making it difficult to shape the pattern;if the spacing between adjacent pattern lines is too large or too small,it will result in residual gallium liquid between the lines;increasing the thickness of the gallium film will cause the pattern to expand beyond the boundary,but increasing the thickness of the gallium film can also enhance the thickness and uniformity of the pattern lines.In summary,the principle of selective adsorption can be used to achieve the automatic formation of nano patterns,and the pattern formation effect is influenced by factors such as atomic interaction energy and pattern configuration.
基金The National Natural Science Foundation of China(42301273)The R&D Program of Beijing Municipal Education Commission(SM202210015004)The Beijing Central Axis Protection Foundation(DYKT-2023-015).
文摘The temporal-spatial pattern of linear cultural heritage in the context of the tourism industry is closely linked to heritage management.Using the 1800 km long Beijing-Hangzhou Grand Canal as an example,this study compared the dynamic evolution of tourism businesses in Beijing,Liaocheng,and Yangzhou at three time points(2010,2015,and 2019)via nearest neighbor analysis,kernel density estimation,and the standard deviational ellipse.Next,a Geo-detector was used to examine the influencing factors.The results reveal significant growth regardless of the quantity or agglomeration degree from 2010 to 2019,and the direction of industrial expansion is consistent with the flow direction of the canal.Moreover,the explanatory powers of factors related to socioeconomic development and canal resources are obviously stronger than those of the natural environment.The findings of this study offer theoretical constructs and policy recommendations for the sustainable development of the Beijing-Hangzhou Grand Canal and other linear cultural heritage sites.
基金The National Key Research and Development Program(2019YFC0507802)The National Natural Science Foundation of China(41801139)。
文摘Determining how to achieve sustainable development and protection of historical districts is a worthwhile research topic.As a vital way to update urban space,tourism development in historical districts is an effective tool for redistributing urban functions and increasing urban vitality.This paper takes the Insa-dong in South Korea as a case study for the evaluation of tourist satisfaction in historical districts,based on 550 questionnaires.The questionnaire contains 33 evaluation indicators,and the subjects’subjective judgment and satisfaction with Insa-dong are measured in the form of the Likert scale.Using SPSS to analyze tourists’satisfaction with historical districts,this studyfinds that:(1)The tourist satisfaction evaluation of Insa-dong includes six dimensions in total:"Embodiment of historical elements","The blend of tradition and modernity","Industry distribution and type","Consumer demand","Street layout and function"and"Landscaping".(2)"The blend of tradition and modernity"has the highest weight while"Industry distribution and type"has the lowest one in the analysis of factors influencing overall satisfaction.(3)The analysis of the common factor weights and the common factor satisfaction levels shows that"The blend of tradition and modernity"and"Street layout and function"are the parts that need to be improved."Consumer demand"also has a lot of room for promotion.The research results will be beneficial for enhancing the tourist experiences of historical districts and they provide a theoretical basis and practical experience reference for effective protection and sustainable development of historical districts.
