In this paper, the authors present a modelling activity developed from a thematic project in the models and mathematical modelling class of the professional master＇s degree program in mathematics education at the Fed...In this paper, the authors present a modelling activity developed from a thematic project in the models and mathematical modelling class of the professional master＇s degree program in mathematics education at the Federal University of Ouro Preto. The students enrolled in the class chose to study the theme Brazilian Public Politics. After several debates regarding the theme, the students were separated into three groups and each group chose a subtheme to study. The themes were IDH （index of human development）, minimum wage and social security. As an example, a description of the thematic project about the minimum wage in Brazil is presented. The principal results obtained in the study of this theme include a discussion about the potentialities of the theme as a classroom activity in different levels of schooling. As an educational activity, the thematic project demonstrated itself to be greatly relevant, since not only did it provide the learning possibility of mathematics related to the issues studied, but also promoted various discussions regarding the theme, which, in our conception, contributes to the social-critical development of the students. Finally, from the point of view of applied mathematics and mathematics education, the development of a modelling activity from thematic projects showed itself to be a good source of researches.展开更多
A mathematical model of river be d change downstream of the Xiaolangdi Reservoir was developed based on the most recent achievement of sediment theory in the Yellow River. The model was verified by the comparison of...A mathematical model of river be d change downstream of the Xiaolangdi Reservoir was developed based on the most recent achievement of sediment theory in the Yellow River. The model was verified by the comparison of computed results and measured data from 1986 to 1996. Num erical prediction of the erosion and deposition downstream of the Xiaolangdi Res ervoir in its first operation year was carried out, and a series of suggestions were given for reservoir operation mode in its early operation period.展开更多
This study investigates the psychological and cultural motivations that underpin charitable giving in Sri Lanka,with particular attention to whether such behaviour can be considered genuinely altruistic.While charitab...This study investigates the psychological and cultural motivations that underpin charitable giving in Sri Lanka,with particular attention to whether such behaviour can be considered genuinely altruistic.While charitable acts are commonly perceived as selfless,this research highlights the complex and often contradictory nature of the motivations involved.Using a qualitative approach,semi-structured interviews were conducted with individuals who regularly engage in charitable activities.Thematic analysis revealed three overarching categories of motivation.The first,obliged motives stem from social expectations and religious duty.The second,independent motives reflect personal values and intrinsic satisfaction.The third,ambivalent motives are a novel category that captures the simultaneous interplay between self-serving and other-oriented intentions.The emergence of ambivalent motives is especially significant,as it challenges binary distinctions between altruism and egoism,suggesting that charitable giving frequently serves psychological,social,and existential needs alongside prosocial goals.The findings support established psychological frameworks such as Self-Determination Theory and the Theory of Planned Behavior,while also highlighting the unique cultural dynamics of Sri Lankan society,particularly the influence of Buddhist ethics and collectivist values.These cultural factors shape both the meaning and practice of giving,embedding it within broader narratives of moral obligation,social harmony,and spiritual merit.Ultimately,the study concludes that while charitable giving in Sri Lanka may outwardly appear altruistic,it is often driven by a complex mixture of internal and external motives,suggesting that authenticity in giving is rarely absolute but rather contextually and psychologically mediated.展开更多
Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports an...Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.展开更多
Giant panda writing is a classic form of thematic nature writing.Since the scientific discovery and the popularization of the giant panda by naturalists,this writing tradition has spanned nearly a century.Throughout t...Giant panda writing is a classic form of thematic nature writing.Since the scientific discovery and the popularization of the giant panda by naturalists,this writing tradition has spanned nearly a century.Throughout this process,Chinese giant panda writing has developed its own distinct characteristics.Western giant panda writing encompasses genres such as scientific essays,fieldwork notes,and documentary works.Within Chinese giant panda writing,reportage,popular science works,and comprehensive,systematic documentary works all have representative authors and texts.In recent years,IP-oriented giant panda books have shown notable performance.While Chinese giant panda writing exhibits diverse types and perspectives,its scientific rigor,informative value,and innovative expression still require enhancement.As a form of thematic nature writing,giant panda writing provides valuable insights for writings on other subjects.展开更多
We are pleased to introduce this special thematic section on Nanofluid Mechanics and Heat Transfer that is being included in Acta Mechanica Sinica(AMS).This thematic issue consists of 6 papers selected from papers tha...We are pleased to introduce this special thematic section on Nanofluid Mechanics and Heat Transfer that is being included in Acta Mechanica Sinica(AMS).This thematic issue consists of 6 papers selected from papers that were presented at the 18th International Symposium on Numer-ical Analysis of Fluid Flows,Heat and Mass Transfer-Nu-merical Fluids 2023,held in Heraklion,Crete Greece,11-17 September 2023,and invited through a general call.The symposium covers various subjects:from new numerical methods and fundamental research until engineering appli-cations,and it is a part of the International Conference of Numerical Analysis and Applied Mathematics(ICNAAM),held annually.展开更多
Activity 1 Think about the following questions and write down your answers before reading the text.1.How might the introduction of a flower⁃viewing⁃themed train impact local communities along the railway route?2.What ...Activity 1 Think about the following questions and write down your answers before reading the text.1.How might the introduction of a flower⁃viewing⁃themed train impact local communities along the railway route?2.What other types of themed trains could be developed to promote tourism in China?And what unique experiences could they offer?展开更多
Background: Peripheral nerve regeneration is a critical research area with significant implications for neurology,neurosurgery,and regenerative medicine.A bibliometric analysis was conducted to provide a structured ov...Background: Peripheral nerve regeneration is a critical research area with significant implications for neurology,neurosurgery,and regenerative medicine.A bibliometric analysis was conducted to provide a structured overview of research trends,intellectual impact,and evolving themes in peripheral nerve regeneration.This study aimed to identify the most influential research articles on peripheral nerve regeneration;analyze keyword trends,thematic evolution,and co-word structures;assess the contributions of top authors,universities,and countries;and examine collaboration networks and research dynamics.Methods: A systematic bibliometric approach was employed using two search strategies.The first strategy involved searching within the title,abstract,and keyword fields,yielding 15 317 papers,whereas the second strategy was restricted to searching titles only,retrieving 3 531 papers.From these,the 100 most cited papers were selected for analysis.A thematic analysis was conducted using co-word clustering.The leading contributors were ranked according to the number of publications,citations,h-index,g-index,and m-index.Results: The bibliometric analysis provided several key insights.Keyword analysis using bi-and tri-gram techniques revealed the dominant research themes within the field.The top contributors,including authors,universities,and countries,were ranked based on their productivity and citation impact.Collaboration networks were mapped at the author,institutional,and country levels,highlighting key partnerships and global research interactions.Thematic analysis classified research into seven major domains: neural regeneration and repair;cellular and molecular biology;biomaterials and tissue engineering;experimental studies and statistical analyses;functional and therapeutic aspects;neuropathic pain and peripheral nerve disorders;and Schwann cell and cellular responses.Additionally,the ten most influential papers were reviewed in detail to understand their contributions to the field.Conclusion: This study provides a comprehensive and structured overview of peripheral nerve regeneration research.These findings offer valuable insights into the intellectual foundation of the field by identifying key contributors,research trends,and collaboration patterns.The results serve as a guide for future research,helping researchers to navigate the evolving landscape of peripheral nerve regeneration.展开更多
Background:Three-dimensional(3D)printing has revolutionized craniofacial and craniomaxillofacial applications,leading to substantial advancements in patient-specific treatments.In this study,a bibliometric analysis wa...Background:Three-dimensional(3D)printing has revolutionized craniofacial and craniomaxillofacial applications,leading to substantial advancements in patient-specific treatments.In this study,a bibliometric analysis was performed to identify the key contributors,research trends,thematic developments,and collaboration networks in this evolving field.Methods:Two search strategies were employed to ensure a comprehensive analysis:(1)a broad search,in which selected keywords were searched in the title,abstract,and keyword fields to capture all relevant publications,and(2)a title-specific search,in which keywords were restricted to the title field to identify publications with a strong focus on 3D printing in craniofacial and craniomaxillofacial applications.The retrieved dataset was analyzed using VOSviewer and RStudio(bibliometrix package).Results:The broad search retrieved 3534 publications,whereas the title-specific search yielded 280 publications.The analysis of these 280 papers focused on identifying the top authors,universities,and countries,as well as their research dynamics and collaboration networks.A more detailed approach was adopted by examining the titles of these 280 papers.VOSviewer segmented the titles into approximately 800 words,which were then categorized into 18 distinct thematic groups to represent research trends.The focus areas of the ten most cited papers were also analyzed.Conclusion:This bibliometric study provides valuable insights into the progress in 3D printing for craniofacial and craniomaxillofacial applications.By highlighting the key contributors,thematic developments,and collaborative networks,this study offers a foundation for future research in this rapidly advancing field.展开更多
Background:Facelift procedures represent a critical area of aesthetic and reconstructive surgery that addresses the physical and psychological impacts of facial aging.Advancements in techniques and technologies over t...Background:Facelift procedures represent a critical area of aesthetic and reconstructive surgery that addresses the physical and psychological impacts of facial aging.Advancements in techniques and technologies over time have transformed the field,making it essential to assess the evolution of research trends.This study performed a bibliometric analysis of facelift research by examining the top 50 most cited publications to evaluate their contributions,thematic evolution,and collaborative networks.Methods:The Scopus database was used to identify relevant publications.A total of 50 documents were selected,comprising 47 articles and 3 reviews published across 16 academic sources.The inclusion criteria focused on publications with substantial relevance to facelift research;this ensured comprehensive coverage of the topic.Key performance indicators(for the authors)such as the number of papers,total citations,h-index,g-index,m-index,HG composite,and Q2 index were calculated.Citation analysis and collaborative network mapping were conducted to identify the leading contributors,including authors,universities,countries,and sources.Results:The findings indicated an annual growth rate of 1.34%,with an average document age of 29.4 years and an average citation count per document of 134.9.The analysis identified the top authors and their collaborative networks,along with key contributions from various universities,countries,and sources.The thematic evolution of facelift research was examined across these 50 papers;this revealed important trends and shifts within the field.Conclusion:This bibliometric analysis offers valuable insights into the development and influence of facelift research over a 52-year span.It highlights significant contributors and outlines thematic shifts,providing directions for future research and collaboration in this field.展开更多
Introduction.Types of paper.Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports an...Introduction.Types of paper.Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.Please ensure that you select the appropriate article type from the list of options when making your submission.Authors contributing to special issues should ensure that they select the special issue article type from this list.展开更多
The Metropolitan Museum of Art is located on Fifth Avenue in New York City,USA,adjacent to Central Park.The museum was incorporated in 1870 and opened two years later.With a collection of over 2 million items,it is th...The Metropolitan Museum of Art is located on Fifth Avenue in New York City,USA,adjacent to Central Park.The museum was incorporated in 1870 and opened two years later.With a collection of over 2 million items,it is the largest art museum in New York City and one of the foremost in the world.Its permanent collections are divided into 19 collection areas,with a total of 3 floors in the exhibition hall,comprising numerous thematic galleries.展开更多
Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports an...Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.Please ensure that you select the appropriate article type from the list of options when making your submission.Authors contributing to special issues should ensure that they select the special issue article type from this list.展开更多
This article explores the styles and characteristics of thematic art creation in Hong Kong,Macao,and Taiwan regions,analyzing the uniqueness of these regions’artistic backgrounds,artistic languages,theme selections,a...This article explores the styles and characteristics of thematic art creation in Hong Kong,Macao,and Taiwan regions,analyzing the uniqueness of these regions’artistic backgrounds,artistic languages,theme selections,and expressive techniques.The art creation in Hong Kong,Macao,and Taiwan regions is deeply influenced by traditional Chinese culture while incorporating Western artistic elements,exhibiting a diversified artistic style.Thematic art creation in these three regions has its own distinct features,including a deep exploration of local culture and a sensitive capture of the spirit of the times,which together constitute a rich and colorful artistic landscape in Hong Kong,Macao,and Taiwan regions.展开更多
The thematic map is a major class of maps designed to demonstrate particular features or concepts,functioning as an indispensable tool in geographical research.The process of thematic mapping is one into which geograp...The thematic map is a major class of maps designed to demonstrate particular features or concepts,functioning as an indispensable tool in geographical research.The process of thematic mapping is one into which geographical research goes deeply and broadly.The key activity and course of thematic map production is the use of mathematical models to create thematic data layers.Therefore,the selection and optimization of mathematical models is in the forefront of thematic map research.The theoretical foundations,mechanisms and methods of mathematical model optimization are expounded in this paper,including two approaches,the phase by phase mode and the multi-aim scheme balance mode.Case studies in eco-environment mapping and emergency mapping are described and analyzed,with a hierarchical analysis method being used in the model optimization for eco-environment fragility and sensitivity assessment mapping in Beibuwan (Guangxi) District,the dynamic system (DS) method being used in the model optimization for ecological security adjustment mapping in Xishuang Banna,Yunnan province,and the multi-phase mode being used in the models for forest fire and infectious diseases mapping.展开更多
Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s arti...Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s artificial intelligence(AI)disruptive technology policy,and to put forward suggestions for optimizing China’s AI disruptive technology policy.Design/methodology/approach:Develop a three-dimensional analytical framework for“policy tools-policy actors-policy themes”and apply policy tools,social network analysis,and LDA topic model to conduct a comprehensive analysis of the utilization of policy tools,cooperative relationships among policy actors,and the trends in policy theme settings within China’s innovative AI technology policy.Findings:We find that the collaborative relationship among the policy actors of AI disruptive technology in China is insufficiently close.Marginal subjects exhibit low participation in the cooperation network and overly rely on central subjects,forming a“center-periphery”network structure.Policy tool usage is predominantly focused on supply and environmental types,with a severe inadequacy in demand-side policy tool utilization.Policy themes are diverse,encompassing topics such as“Intelligent Services”“Talent Cultivation”“Information Security”and“Technological Innovation”,which will remain focal points.Under the themes of“Intelligent Services”and“Intelligent Governance”,policy tool usage is relatively balanced,with close collaboration among policy entities.However,the theme of“AI Theoretical System”lacks a comprehensive understanding of tool usage and necessitates enhanced cooperation with other policy entities.Research limitations:The data sources and experimental scope are subject to certain limitations,potentially introducing biases and imperfections into the research results,necessitating further validation and refinement.Practical implications:The study introduces a three-dimensional analysis framework for disruptive technology policy texts,which is significant for formulating and enhancing disruptive technology policies.Originality/value:This study utilizes text mining and content analysis techniques to quantitatively analyze disruptive technology policy texts.It systematically evaluates China’s AI policies quantitatively,focusing on policy tools,policy actors,policy themes.The study uncovers the characteristics and deficiencies of current AI policies,offering recommendations for formulating and enhancing disruptive technology policies.展开更多
Journal of Cotton Research has launched four thematic series lately and is expecting research articles,reviews,letters,and comments from cotton research community around the world.Please find detailed information of t...Journal of Cotton Research has launched four thematic series lately and is expecting research articles,reviews,letters,and comments from cotton research community around the world.Please find detailed information of thematic series and submission instructions as follow.展开更多
Social Network Theory and methods have emerged as pivotal tools for dissecting intricate interdisciplinary issues in rural communities.This study aims to systematically delineate the application characteristics and tr...Social Network Theory and methods have emerged as pivotal tools for dissecting intricate interdisciplinary issues in rural communities.This study aims to systematically delineate the application characteristics and trends of Social Network Analysis(SNA)in rural community research.Using a twofold approach,we integrate a traditional literature review and CiteSpace bibliometric analysis to assess the application status and evolutionary trends of SNA methods in this context.The key findings include the following:①Chinese research trends:scholars predominantly concentrate on the“three rural”issues(related to agriculture,rural areas,and small-scale farmers)and social support mechanisms for vulnerable rural populations.With policy shifts,rural revitalization,tourism,governance,social trust,and multi-dimensional poverty are poised to emerge as hot topics for the future.For further refinement,we suggest that the application of SNA in rural community research could benefit from content expansion,long-term studies,and innovative modelling techniques.②Research by international scholars has been primarily directed toward the physical and mental health of rural residents,as well as socioeconomic issues.Despite these studies covering a range of typical cases across various nations,a conspicuous lack of thorough,systematic,and prolonged efforts focused on rural community development in specific regions remains.Additionally,health issues affecting rural residents are expected to sustain long-standing and focused international academic attention.This study contributes to a more nuanced understanding of the current applications and potential future directions of SNA in rural community studies,both in China and internationally.展开更多
In this study,our goal is to identify the land surface that has been polluted/degraded by petroleum products or other identified causes through laboratory analysis,to assess the depth of current contamination and to i...In this study,our goal is to identify the land surface that has been polluted/degraded by petroleum products or other identified causes through laboratory analysis,to assess the depth of current contamination and to identify the specific causes of contamination.The level of contamination will be assessed by analyzing a total of 90 soil samples,both within the first 30 cm depth and within the 30-60 cm interval.The potential impact of the petroleum activities and their effects on the environment and agricultural development in the area will be evaluated by studying the distribution of the chemical elements analyzed,particularly total petroleum hydrocarbons(TPH).In addition,a thematic map was created using MapSys 10.0 software based on their distribution,indicating the polluted areas using color codes and values.This analysis and mapping revealed that 7,473 square meters of the site were severely contaminated at 30 cm,representing approximately 25% of the site.展开更多
文摘In this paper, the authors present a modelling activity developed from a thematic project in the models and mathematical modelling class of the professional master＇s degree program in mathematics education at the Federal University of Ouro Preto. The students enrolled in the class chose to study the theme Brazilian Public Politics. After several debates regarding the theme, the students were separated into three groups and each group chose a subtheme to study. The themes were IDH （index of human development）, minimum wage and social security. As an example, a description of the thematic project about the minimum wage in Brazil is presented. The principal results obtained in the study of this theme include a discussion about the potentialities of the theme as a classroom activity in different levels of schooling. As an educational activity, the thematic project demonstrated itself to be greatly relevant, since not only did it provide the learning possibility of mathematics related to the issues studied, but also promoted various discussions regarding the theme, which, in our conception, contributes to the social-critical development of the students. Finally, from the point of view of applied mathematics and mathematics education, the development of a modelling activity from thematic projects showed itself to be a good source of researches.
基金Project supported by the National Natural Science Foundation of China. (No:59890200)
文摘A mathematical model of river be d change downstream of the Xiaolangdi Reservoir was developed based on the most recent achievement of sediment theory in the Yellow River. The model was verified by the comparison of computed results and measured data from 1986 to 1996. Num erical prediction of the erosion and deposition downstream of the Xiaolangdi Res ervoir in its first operation year was carried out, and a series of suggestions were given for reservoir operation mode in its early operation period.
文摘This study investigates the psychological and cultural motivations that underpin charitable giving in Sri Lanka,with particular attention to whether such behaviour can be considered genuinely altruistic.While charitable acts are commonly perceived as selfless,this research highlights the complex and often contradictory nature of the motivations involved.Using a qualitative approach,semi-structured interviews were conducted with individuals who regularly engage in charitable activities.Thematic analysis revealed three overarching categories of motivation.The first,obliged motives stem from social expectations and religious duty.The second,independent motives reflect personal values and intrinsic satisfaction.The third,ambivalent motives are a novel category that captures the simultaneous interplay between self-serving and other-oriented intentions.The emergence of ambivalent motives is especially significant,as it challenges binary distinctions between altruism and egoism,suggesting that charitable giving frequently serves psychological,social,and existential needs alongside prosocial goals.The findings support established psychological frameworks such as Self-Determination Theory and the Theory of Planned Behavior,while also highlighting the unique cultural dynamics of Sri Lankan society,particularly the influence of Buddhist ethics and collectivist values.These cultural factors shape both the meaning and practice of giving,embedding it within broader narratives of moral obligation,social harmony,and spiritual merit.Ultimately,the study concludes that while charitable giving in Sri Lanka may outwardly appear altruistic,it is often driven by a complex mixture of internal and external motives,suggesting that authenticity in giving is rarely absolute but rather contextually and psychologically mediated.
文摘Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.
文摘Giant panda writing is a classic form of thematic nature writing.Since the scientific discovery and the popularization of the giant panda by naturalists,this writing tradition has spanned nearly a century.Throughout this process,Chinese giant panda writing has developed its own distinct characteristics.Western giant panda writing encompasses genres such as scientific essays,fieldwork notes,and documentary works.Within Chinese giant panda writing,reportage,popular science works,and comprehensive,systematic documentary works all have representative authors and texts.In recent years,IP-oriented giant panda books have shown notable performance.While Chinese giant panda writing exhibits diverse types and perspectives,its scientific rigor,informative value,and innovative expression still require enhancement.As a form of thematic nature writing,giant panda writing provides valuable insights for writings on other subjects.
文摘We are pleased to introduce this special thematic section on Nanofluid Mechanics and Heat Transfer that is being included in Acta Mechanica Sinica(AMS).This thematic issue consists of 6 papers selected from papers that were presented at the 18th International Symposium on Numer-ical Analysis of Fluid Flows,Heat and Mass Transfer-Nu-merical Fluids 2023,held in Heraklion,Crete Greece,11-17 September 2023,and invited through a general call.The symposium covers various subjects:from new numerical methods and fundamental research until engineering appli-cations,and it is a part of the International Conference of Numerical Analysis and Applied Mathematics(ICNAAM),held annually.
文摘Activity 1 Think about the following questions and write down your answers before reading the text.1.How might the introduction of a flower⁃viewing⁃themed train impact local communities along the railway route?2.What other types of themed trains could be developed to promote tourism in China?And what unique experiences could they offer?
文摘Background: Peripheral nerve regeneration is a critical research area with significant implications for neurology,neurosurgery,and regenerative medicine.A bibliometric analysis was conducted to provide a structured overview of research trends,intellectual impact,and evolving themes in peripheral nerve regeneration.This study aimed to identify the most influential research articles on peripheral nerve regeneration;analyze keyword trends,thematic evolution,and co-word structures;assess the contributions of top authors,universities,and countries;and examine collaboration networks and research dynamics.Methods: A systematic bibliometric approach was employed using two search strategies.The first strategy involved searching within the title,abstract,and keyword fields,yielding 15 317 papers,whereas the second strategy was restricted to searching titles only,retrieving 3 531 papers.From these,the 100 most cited papers were selected for analysis.A thematic analysis was conducted using co-word clustering.The leading contributors were ranked according to the number of publications,citations,h-index,g-index,and m-index.Results: The bibliometric analysis provided several key insights.Keyword analysis using bi-and tri-gram techniques revealed the dominant research themes within the field.The top contributors,including authors,universities,and countries,were ranked based on their productivity and citation impact.Collaboration networks were mapped at the author,institutional,and country levels,highlighting key partnerships and global research interactions.Thematic analysis classified research into seven major domains: neural regeneration and repair;cellular and molecular biology;biomaterials and tissue engineering;experimental studies and statistical analyses;functional and therapeutic aspects;neuropathic pain and peripheral nerve disorders;and Schwann cell and cellular responses.Additionally,the ten most influential papers were reviewed in detail to understand their contributions to the field.Conclusion: This study provides a comprehensive and structured overview of peripheral nerve regeneration research.These findings offer valuable insights into the intellectual foundation of the field by identifying key contributors,research trends,and collaboration patterns.The results serve as a guide for future research,helping researchers to navigate the evolving landscape of peripheral nerve regeneration.
文摘Background:Three-dimensional(3D)printing has revolutionized craniofacial and craniomaxillofacial applications,leading to substantial advancements in patient-specific treatments.In this study,a bibliometric analysis was performed to identify the key contributors,research trends,thematic developments,and collaboration networks in this evolving field.Methods:Two search strategies were employed to ensure a comprehensive analysis:(1)a broad search,in which selected keywords were searched in the title,abstract,and keyword fields to capture all relevant publications,and(2)a title-specific search,in which keywords were restricted to the title field to identify publications with a strong focus on 3D printing in craniofacial and craniomaxillofacial applications.The retrieved dataset was analyzed using VOSviewer and RStudio(bibliometrix package).Results:The broad search retrieved 3534 publications,whereas the title-specific search yielded 280 publications.The analysis of these 280 papers focused on identifying the top authors,universities,and countries,as well as their research dynamics and collaboration networks.A more detailed approach was adopted by examining the titles of these 280 papers.VOSviewer segmented the titles into approximately 800 words,which were then categorized into 18 distinct thematic groups to represent research trends.The focus areas of the ten most cited papers were also analyzed.Conclusion:This bibliometric study provides valuable insights into the progress in 3D printing for craniofacial and craniomaxillofacial applications.By highlighting the key contributors,thematic developments,and collaborative networks,this study offers a foundation for future research in this rapidly advancing field.
文摘Background:Facelift procedures represent a critical area of aesthetic and reconstructive surgery that addresses the physical and psychological impacts of facial aging.Advancements in techniques and technologies over time have transformed the field,making it essential to assess the evolution of research trends.This study performed a bibliometric analysis of facelift research by examining the top 50 most cited publications to evaluate their contributions,thematic evolution,and collaborative networks.Methods:The Scopus database was used to identify relevant publications.A total of 50 documents were selected,comprising 47 articles and 3 reviews published across 16 academic sources.The inclusion criteria focused on publications with substantial relevance to facelift research;this ensured comprehensive coverage of the topic.Key performance indicators(for the authors)such as the number of papers,total citations,h-index,g-index,m-index,HG composite,and Q2 index were calculated.Citation analysis and collaborative network mapping were conducted to identify the leading contributors,including authors,universities,countries,and sources.Results:The findings indicated an annual growth rate of 1.34%,with an average document age of 29.4 years and an average citation count per document of 134.9.The analysis identified the top authors and their collaborative networks,along with key contributions from various universities,countries,and sources.The thematic evolution of facelift research was examined across these 50 papers;this revealed important trends and shifts within the field.Conclusion:This bibliometric analysis offers valuable insights into the development and influence of facelift research over a 52-year span.It highlights significant contributors and outlines thematic shifts,providing directions for future research and collaboration in this field.
文摘Introduction.Types of paper.Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.Please ensure that you select the appropriate article type from the list of options when making your submission.Authors contributing to special issues should ensure that they select the special issue article type from this list.
文摘The Metropolitan Museum of Art is located on Fifth Avenue in New York City,USA,adjacent to Central Park.The museum was incorporated in 1870 and opened two years later.With a collection of over 2 million items,it is the largest art museum in New York City and one of the foremost in the world.Its permanent collections are divided into 19 collection areas,with a total of 3 floors in the exhibition hall,comprising numerous thematic galleries.
文摘Introduction Types of paper Contributions falling into the following categories will be considered for publication:original articles,review articles,short letters,modelling/theory and methods articles,rapid reports and special thematic issues.Please ensure that you select the appropriate article type from the list of options when making your submission.Authors contributing to special issues should ensure that they select the special issue article type from this list.
文摘This article explores the styles and characteristics of thematic art creation in Hong Kong,Macao,and Taiwan regions,analyzing the uniqueness of these regions’artistic backgrounds,artistic languages,theme selections,and expressive techniques.The art creation in Hong Kong,Macao,and Taiwan regions is deeply influenced by traditional Chinese culture while incorporating Western artistic elements,exhibiting a diversified artistic style.Thematic art creation in these three regions has its own distinct features,including a deep exploration of local culture and a sensitive capture of the spirit of the times,which together constitute a rich and colorful artistic landscape in Hong Kong,Macao,and Taiwan regions.
基金supported by the Special Project of the State Scientific Basic Work (Grant No.2007FY140800-4)the National Hi-Tech Research and Development Program of China ("863" Project) (Grant No.2006AA06Z418)the State Developing & Reforming Committee High-tech Project of CNGI
文摘The thematic map is a major class of maps designed to demonstrate particular features or concepts,functioning as an indispensable tool in geographical research.The process of thematic mapping is one into which geographical research goes deeply and broadly.The key activity and course of thematic map production is the use of mathematical models to create thematic data layers.Therefore,the selection and optimization of mathematical models is in the forefront of thematic map research.The theoretical foundations,mechanisms and methods of mathematical model optimization are expounded in this paper,including two approaches,the phase by phase mode and the multi-aim scheme balance mode.Case studies in eco-environment mapping and emergency mapping are described and analyzed,with a hierarchical analysis method being used in the model optimization for eco-environment fragility and sensitivity assessment mapping in Beibuwan (Guangxi) District,the dynamic system (DS) method being used in the model optimization for ecological security adjustment mapping in Xishuang Banna,Yunnan province,and the multi-phase mode being used in the models for forest fire and infectious diseases mapping.
基金supported by the National Social Science Foundation of China(Grant No.22BTQ089).
文摘Purpose:The transformative impact of disruptive technologies on the restructuring of the times has attracted widespread global attention.This study aims to analyze the characteristics and shortcomings of China’s artificial intelligence(AI)disruptive technology policy,and to put forward suggestions for optimizing China’s AI disruptive technology policy.Design/methodology/approach:Develop a three-dimensional analytical framework for“policy tools-policy actors-policy themes”and apply policy tools,social network analysis,and LDA topic model to conduct a comprehensive analysis of the utilization of policy tools,cooperative relationships among policy actors,and the trends in policy theme settings within China’s innovative AI technology policy.Findings:We find that the collaborative relationship among the policy actors of AI disruptive technology in China is insufficiently close.Marginal subjects exhibit low participation in the cooperation network and overly rely on central subjects,forming a“center-periphery”network structure.Policy tool usage is predominantly focused on supply and environmental types,with a severe inadequacy in demand-side policy tool utilization.Policy themes are diverse,encompassing topics such as“Intelligent Services”“Talent Cultivation”“Information Security”and“Technological Innovation”,which will remain focal points.Under the themes of“Intelligent Services”and“Intelligent Governance”,policy tool usage is relatively balanced,with close collaboration among policy entities.However,the theme of“AI Theoretical System”lacks a comprehensive understanding of tool usage and necessitates enhanced cooperation with other policy entities.Research limitations:The data sources and experimental scope are subject to certain limitations,potentially introducing biases and imperfections into the research results,necessitating further validation and refinement.Practical implications:The study introduces a three-dimensional analysis framework for disruptive technology policy texts,which is significant for formulating and enhancing disruptive technology policies.Originality/value:This study utilizes text mining and content analysis techniques to quantitatively analyze disruptive technology policy texts.It systematically evaluates China’s AI policies quantitatively,focusing on policy tools,policy actors,policy themes.The study uncovers the characteristics and deficiencies of current AI policies,offering recommendations for formulating and enhancing disruptive technology policies.
文摘Journal of Cotton Research has launched four thematic series lately and is expecting research articles,reviews,letters,and comments from cotton research community around the world.Please find detailed information of thematic series and submission instructions as follow.
基金funded by the National Science Foundation of China[Grant No.42071200]Second Tibetan Plateau Scientific Expedition and Research Program[Grant No.2019QZKK0902]the Western China Youth Scholars Project under the Western Light Talent Training and Recruitment Program of the Chinese Academy of Sciences.
文摘Social Network Theory and methods have emerged as pivotal tools for dissecting intricate interdisciplinary issues in rural communities.This study aims to systematically delineate the application characteristics and trends of Social Network Analysis(SNA)in rural community research.Using a twofold approach,we integrate a traditional literature review and CiteSpace bibliometric analysis to assess the application status and evolutionary trends of SNA methods in this context.The key findings include the following:①Chinese research trends:scholars predominantly concentrate on the“three rural”issues(related to agriculture,rural areas,and small-scale farmers)and social support mechanisms for vulnerable rural populations.With policy shifts,rural revitalization,tourism,governance,social trust,and multi-dimensional poverty are poised to emerge as hot topics for the future.For further refinement,we suggest that the application of SNA in rural community research could benefit from content expansion,long-term studies,and innovative modelling techniques.②Research by international scholars has been primarily directed toward the physical and mental health of rural residents,as well as socioeconomic issues.Despite these studies covering a range of typical cases across various nations,a conspicuous lack of thorough,systematic,and prolonged efforts focused on rural community development in specific regions remains.Additionally,health issues affecting rural residents are expected to sustain long-standing and focused international academic attention.This study contributes to a more nuanced understanding of the current applications and potential future directions of SNA in rural community studies,both in China and internationally.
文摘In this study,our goal is to identify the land surface that has been polluted/degraded by petroleum products or other identified causes through laboratory analysis,to assess the depth of current contamination and to identify the specific causes of contamination.The level of contamination will be assessed by analyzing a total of 90 soil samples,both within the first 30 cm depth and within the 30-60 cm interval.The potential impact of the petroleum activities and their effects on the environment and agricultural development in the area will be evaluated by studying the distribution of the chemical elements analyzed,particularly total petroleum hydrocarbons(TPH).In addition,a thematic map was created using MapSys 10.0 software based on their distribution,indicating the polluted areas using color codes and values.This analysis and mapping revealed that 7,473 square meters of the site were severely contaminated at 30 cm,representing approximately 25% of the site.
