Promoting the deep integration of advanced manufacturing and producer services is not only a key path for metropolitan to climb the global value chain,but also an important new driving force for optimizing urban spati...Promoting the deep integration of advanced manufacturing and producer services is not only a key path for metropolitan to climb the global value chain,but also an important new driving force for optimizing urban spatial structure.Based on the two dimen-sions of industrial linkage and spatial co-agglomeration from the perspective of industrial integration,taking Beijing,China as a case,using industrial input-output data,micro-enterprise spatial data,and methods such as industrial linkage model,standard deviation el-lipse,and spatial similarity coefficient,this study explores the coupling relationship between industrial linkage and spatial co-agglomer-ation of advanced manufacturing and producer services from 2007 to 2020.The results demonstrate that:1)the industrial linkage between advanced manufacturing and producer services in Beijing has an upward trend,in which the business services have the most significant improvement,in which the business services have the most improvement while the technology services have the most de-crease,but in general,the industrial linkage between the two industries shows a low level.2)Producer services were more spatially clustered than advanced manufacturing,and the degree of spatial co-agglomeration of the two also showed an increasing trend,with strong regional and industrial heterogeneity characteristics,among which the pairing industry involving commerce services and techno-logy services had a more obvious improvement.3)The coupling analysis found that the spatial dependence between advanced manufac-turing and producer services decreased,showing a weak positive correlation and a decreasing trend between industrial linkage and spa-tial co-agglomeration;the heterogeneity among subdivision pairs is prominent,and the strong correlation between industries does not mean that there is an inevitable spatial co-agglomeration.4)Based on the differences in coupling relationships and influence mechan-isms,four coupling modes are identified:H-H type,H-L type,L-L type,and L-H type.Finally,this study proposes three policy implica-tions for the integration of advanced manufacturing and producer services in metropolitan areas.展开更多
On January 11,2025,the 2025 Bejing Roundtable Meeting for International Exhibition Organisations was held in Beijing.The event was co-hosted by the CCPIT Bejing,the Bejing Municipal Commerce Bureau,the Shunyi District...On January 11,2025,the 2025 Bejing Roundtable Meeting for International Exhibition Organisations was held in Beijing.The event was co-hosted by the CCPIT Bejing,the Bejing Municipal Commerce Bureau,the Shunyi District People's Government and the Beijing Chamber of International Commerce.展开更多
On 5 March,2025,the"Spring Blossoms"ASEAN-China Lady Cultural Gathering was held at the White Pagoda Academy in Beijing.The event was co-hosted by the ASEAN-China Centre and the Beijing People's Associat...On 5 March,2025,the"Spring Blossoms"ASEAN-China Lady Cultural Gathering was held at the White Pagoda Academy in Beijing.The event was co-hosted by the ASEAN-China Centre and the Beijing People's Association for Friendship with Foreign Countries.展开更多
Couplets,as a vital symbol of Chinese traditional culture,hold prominent cultural significance in Beijing’s urban neighborhoods.This paper assesses the current state of cultural communication efficacy regarding coupl...Couplets,as a vital symbol of Chinese traditional culture,hold prominent cultural significance in Beijing’s urban neighborhoods.This paper assesses the current state of cultural communication efficacy regarding couplets in Beijing’s neighborhoods,identifying challenges including fragile cultural ecosystems,limitations of communication agents,homogeneity in content and forms,and outdated dissemination mechanisms.To address these issues,the study conducts an in-depth analysis of strategies to enhance the cultural dissemination capacity of Beijing’s neighborhood couplet culture,proposing comprehensive enhancement pathways.The research aims to effectively elevate the cultural influence of Beijing’s neighborhood couplet culture and facilitate the city’s development as a national cultural center.展开更多
Urban sprawl affects the sustainable development of the world’s economy and society.Confirming urban sprawl trends and proposing countermeasures have received significant attention.Cities are self-organizing systems ...Urban sprawl affects the sustainable development of the world’s economy and society.Confirming urban sprawl trends and proposing countermeasures have received significant attention.Cities are self-organizing systems with dissipative attributes,and city development is accompanied by urban entropy changes.Urban entropy change reveals the essence of urban sprawl;thus,it can be used tomeasure urban sprawl and better understand its phenomena.However,the literature on entropy change in urban sprawl research is limited to qualitative descriptions,and no convenient or effective quantitativemetrics exist.This study bridges entropy changes and urban formmetrics,analyzing the driving forces in Beijing as a demonstration case.Themain contributions and results are as follows:(1)Anewmethod was constructed to confirm compact or sprawling urban form development.(2)This research shows that the essence of urban sprawl is urban form distortions in an urban self-organizing system resulting from dominant driving forces.(3)This research also shows that urban development with general sprawl characteristics is accompanied by temporally fine-grained compact urban development,and the empirical results show that the urban development state paradigm was neither sprawl nor compact.In future urban management work,it is necessary to regularly monitor changes in various driving factors to prevent urban entropy increases and formulate or adjust urban development plans based on effective assessments.This study contributes by developing a new universal analysis tool and exploring the urban sprawl mechanism,with potential application scenarios that can be extended to any city or region worldwide.展开更多
Focusing on“Shared vision for a better world:Spotlight on SDG 17—Partnership for the goals”,the themed event of World Standards Day 2025 was held on October 14 in Beijing.Presided over by Xiao Han,Director-General ...Focusing on“Shared vision for a better world:Spotlight on SDG 17—Partnership for the goals”,the themed event of World Standards Day 2025 was held on October 14 in Beijing.Presided over by Xiao Han,Director-General of Standards Innovative Department of SAMR,the event was attended by Deng Zhiyong,Vice Minister of SAMR and Administrator of SAC,and addressed by Sergio Mujica,ISO Secretary-General,and Jo Cops,IEC President,via videos.展开更多
The construction of“park cities”requires a systematic thinking to coordinate the networked development of park system and break through the limitation of emphasizing scale and grade and neglecting dynamic correlatio...The construction of“park cities”requires a systematic thinking to coordinate the networked development of park system and break through the limitation of emphasizing scale and grade and neglecting dynamic correlation in traditional planning.Taking Haidian District of Beijing as an example,the social network analysis method is introduced to construct the network model of park green spaces.Through indicators such as clustering coefficient,network density and node centrality,the characteristics of its spatial structure and hierarchical relationship are analyzed.It is found that the network integrity presents the characteristics of“highly local concentration and global fragmentation”,fragmented park green space network and missing spatial connection,isolated clusters and collaborative failure,as well as the spatial mismatch between population and resource supply and demand.Hierarchical issues include“structural imbalance and functional disorder”,disorder between network hierarchy and park level,misalignment of functional hierarchy leading to weakened network risk resistance capacity,and a relatively dense distribution of core nodes,etc.In response to the above problems,a multi-level spatial intervention strategy should be adopted to solve the overall problem of the network.Meanwhile,it is needed to clarify the positioning of a park itself and improve the hierarchical system,so as to construct a multi-level and multi-scale park green space network,contribute to the construction of a park city,and provide residents with more diverse activity venues.展开更多
From 7th to 12th July,the China Soong Ching Ling Foundation hosted the"Youth Development for a Shared Future"Summer Camp.Coming from 12 countries including Armenia,Gambia,Malaysia,Mongolia,Oman,the Philippines.
On March 14,2025,the Centre for China and Globalisation(CCG)held its first VIP Luncheon of the year at the Beijing International Club.The event was moderated by CCG President Wang Huiyao and brought together over 50 C...On March 14,2025,the Centre for China and Globalisation(CCG)held its first VIP Luncheon of the year at the Beijing International Club.The event was moderated by CCG President Wang Huiyao and brought together over 50 Chinese and international vips,including ambassadors from 17 countries,senior diplomats from 8 countries,as well as representatives from international organisations and chambers of commerce,corporate executives,and prominent media professionals.展开更多
Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re pla...Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re planning a trip to Beijing,prepare to be swept up in a living mosaic–more than 3,000 years of history,vibrant contemporary culture,and skyline-defining architecture all fusing and flowing across a vast canvas.This book,Chic Beijing:An Insider’s Guide to Unique New Places,allows readers to take a breathtaking journey through Beijing,the majestic metropolitan capital of China.It also unlocks doors that usually stay closed:rooftop gardens overlooking palace rooftops,micro-galleries tucked into 300-year-old courtyards,and cocktail labs where baijiu meets coffee.展开更多
A novel digital twin(DT)enabled channel model for 6G vehicular communications in Beijing Central Business District(Beijing CBD)is proposed,which can support the design of intelligent transportation systems(ITSs).A DT ...A novel digital twin(DT)enabled channel model for 6G vehicular communications in Beijing Central Business District(Beijing CBD)is proposed,which can support the design of intelligent transportation systems(ITSs).A DT space for Beijing CBD is constructed,and two typical transportation periods,i.e.,peak and off-peak hours,are considered to characterize the vehicular communication channel better.Based on the constructed DT space,a DT-enabled vehicular communication dataset is developed,including light detection and ranging(LiDAR)point clouds,RGB images,and channel information.With the assistance of LiDAR point clouds and RGB images,the scatterer parameters,including number,distance,angle,power,and velocity,are analyzed under different transportation periods.The channel non-stationarity and consistency are mimicked in the proposed model.The key channel statistical properties are derived and simulated.Compared to ray-tracing(RT)results,the accuracy of the proposed model is verified.展开更多
or 17 years,Peng Shituan served as a Chinese diplomat in Vietnam.He is also a prolific poet who shares his daily feelings and thoughts on WeChat Moments in verse form.“I write 10,000 to 20,000 words a month—I never ...or 17 years,Peng Shituan served as a Chinese diplomat in Vietnam.He is also a prolific poet who shares his daily feelings and thoughts on WeChat Moments in verse form.“I write 10,000 to 20,000 words a month—I never count the poems,”he said.This year,he published his third Chinese-Vietnamese bilingual poetry collection,A Pool of Nostalgia.The volume features 100 poems written during his stay in Vietnam between 2019 and 2024,reflecting his deep affection for life in Vietnam.展开更多
On May 21st,the launch ceremony of the 2025 Textile and Clothing"Optimization of Supply and Upgrade"event was held in Gaoyang,Hebei Province.The theme of the event is to promote the coordinated development a...On May 21st,the launch ceremony of the 2025 Textile and Clothing"Optimization of Supply and Upgrade"event was held in Gaoyang,Hebei Province.The theme of the event is to promote the coordinated development and supply-demand docking of the textile and clothing industry in the Beijing–Tianjin–Hebei Region.Representatives from the textile and clothing industries gathered in Gaoyang to discuss the coordinated development of regional industries.The Ministry of Industry and Information Technology,Industry Associations,and leaders of the three local governments jointly announced the official launch of the national industrial upgrading action.展开更多
Respiratory infections are associated with high morbidity and mortality and are a major global health problem[1].Acute respiratory infections are caused by multiple respiratory pathogens,including viruses and bacteria...Respiratory infections are associated with high morbidity and mortality and are a major global health problem[1].Acute respiratory infections are caused by multiple respiratory pathogens,including viruses and bacteria.Viral-bacterial co-infections,which have become increasingly common and a global concern,can lead to substantial complications,causing higher morbidity and adverse prognosis[2].Previous studies have reported low positive detection rates of targeted pathogens related to acute respiratory infections,owing to the limited number of detected pathogens and variations in the sensitivity of diagnostic methods[3-4].Low positive detection rates may impede our understanding of respiratory pathogen characteristics and hamper the development of precise treatment and prevention strategies.展开更多
In recent years,incidents of simultaneous exceedance of PM_(2.5)and O_(3) concentrations,termed PM_(2.5)and O_(3) co-pollution events,have frequently occurred in China.This study conducted atmospheric circulation anal...In recent years,incidents of simultaneous exceedance of PM_(2.5)and O_(3) concentrations,termed PM_(2.5)and O_(3) co-pollution events,have frequently occurred in China.This study conducted atmospheric circulation analysis on two typical co-pollution events in Beijing,occurring from July 22 to July 28,2019,and from April 25 to May 2,2020.These events were categorized into pre-trough southerly airflow type(Type 1)and post-trough northwest flow type(Type 2).Subsequently,sensitivity analyses using the GRAPES-CUACE adjoint model were performed to quantify the contributions of precursor emissions from Beijing and surrounding areas to PM_(2.5)and O_(3) concentrations in Beijing for two types of co-pollution.The results indicated that the spatiotemporal distribution of sensitive source region varied among different circulation types.Primary PM_(2.5)(PPM_(2.5))emissions from Hebei contributed the most to the 24-hour average PM_(2.5)(24-h PM_(2.5))peak concentration(41.6%-45.4%),followed by Beijing emissions(31%-35.7%).The maximum daily 8-hour average ozone peak concentration was primarily influenced by the emissions from Hebei and Beijing,with contribution ratios respectively of 32.8%-44.8% and 29%-42.1%.Additionally,NO_(x)emissions were the main contributors in Type 1,while both NO_(x)and VOCs emissions contributed similarly in Type 2.The iterative emission reduction experiments for two types of co-pollution indicated that Type 1 required emission reductions in NO_(x)(52.4%-71.8%)and VOCs(14.1%-33.8%)only.In contrast,Type 2 required combined emission reductions in NO_(x)(37.0%-65.1%),VOCs(30.7%-56.2%),and PPM_(2.5)(31%-46.9%).This study provided a reference for controlling co-pollution events and improving air quality in Beijing.展开更多
In January 2025,the Beijing Chamber of Commerce(Singapore)was officially established.Coinciding with the 35th anniversary of China-Singapore diplomatic relations and the 60th anniversary of Singapore’s independence,i...In January 2025,the Beijing Chamber of Commerce(Singapore)was officially established.Coinciding with the 35th anniversary of China-Singapore diplomatic relations and the 60th anniversary of Singapore’s independence,its founding is part of a timely response to the growing needs of businesses and communities from both Beijing and Singapore to deepen mutual understanding and expand cooperation.As a Chinese person who has lived and worked in Singapore for many years,Feng Jianli,president of the Beijing Chamber of Commerce(Singapore),knows first-hand just how challenging it can be for new immigrants from Beijing to adapt to identity transitions and access local support.The chamber was founded not only to help them take root and thrive,but also to serve as a platform for deeper people-to-people exchange between Singapore and Beijing.展开更多
On October 21,2025,the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference took place at the Beijing International Fortune Center.Under the theme“Joining Hands for Green Deve...On October 21,2025,the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference took place at the Beijing International Fortune Center.Under the theme“Joining Hands for Green Development and a Better Future,”the conference was supervised by China International Communications Group(CICG)and co-hosted by ASEAN-China Centre(ACC),Beijing Municipal Administrative Center Management Committee,Beijing Tongzhou District People’s Government,and CICG Asia-Pacific.展开更多
基金Under the auspices of National Natural Science Foundation of China(No.42371181)。
文摘Promoting the deep integration of advanced manufacturing and producer services is not only a key path for metropolitan to climb the global value chain,but also an important new driving force for optimizing urban spatial structure.Based on the two dimen-sions of industrial linkage and spatial co-agglomeration from the perspective of industrial integration,taking Beijing,China as a case,using industrial input-output data,micro-enterprise spatial data,and methods such as industrial linkage model,standard deviation el-lipse,and spatial similarity coefficient,this study explores the coupling relationship between industrial linkage and spatial co-agglomer-ation of advanced manufacturing and producer services from 2007 to 2020.The results demonstrate that:1)the industrial linkage between advanced manufacturing and producer services in Beijing has an upward trend,in which the business services have the most significant improvement,in which the business services have the most improvement while the technology services have the most de-crease,but in general,the industrial linkage between the two industries shows a low level.2)Producer services were more spatially clustered than advanced manufacturing,and the degree of spatial co-agglomeration of the two also showed an increasing trend,with strong regional and industrial heterogeneity characteristics,among which the pairing industry involving commerce services and techno-logy services had a more obvious improvement.3)The coupling analysis found that the spatial dependence between advanced manufac-turing and producer services decreased,showing a weak positive correlation and a decreasing trend between industrial linkage and spa-tial co-agglomeration;the heterogeneity among subdivision pairs is prominent,and the strong correlation between industries does not mean that there is an inevitable spatial co-agglomeration.4)Based on the differences in coupling relationships and influence mechan-isms,four coupling modes are identified:H-H type,H-L type,L-L type,and L-H type.Finally,this study proposes three policy implica-tions for the integration of advanced manufacturing and producer services in metropolitan areas.
文摘On January 11,2025,the 2025 Bejing Roundtable Meeting for International Exhibition Organisations was held in Beijing.The event was co-hosted by the CCPIT Bejing,the Bejing Municipal Commerce Bureau,the Shunyi District People's Government and the Beijing Chamber of International Commerce.
文摘On 5 March,2025,the"Spring Blossoms"ASEAN-China Lady Cultural Gathering was held at the White Pagoda Academy in Beijing.The event was co-hosted by the ASEAN-China Centre and the Beijing People's Association for Friendship with Foreign Countries.
文摘Couplets,as a vital symbol of Chinese traditional culture,hold prominent cultural significance in Beijing’s urban neighborhoods.This paper assesses the current state of cultural communication efficacy regarding couplets in Beijing’s neighborhoods,identifying challenges including fragile cultural ecosystems,limitations of communication agents,homogeneity in content and forms,and outdated dissemination mechanisms.To address these issues,the study conducts an in-depth analysis of strategies to enhance the cultural dissemination capacity of Beijing’s neighborhood couplet culture,proposing comprehensive enhancement pathways.The research aims to effectively elevate the cultural influence of Beijing’s neighborhood couplet culture and facilitate the city’s development as a national cultural center.
基金supported by the National Natural Science Foundation of China(Grant No.42171395,No.41801298)the Natural Science Foundation of Jiangsu Province of China(Grant BK20220126,BK20180348).
文摘Urban sprawl affects the sustainable development of the world’s economy and society.Confirming urban sprawl trends and proposing countermeasures have received significant attention.Cities are self-organizing systems with dissipative attributes,and city development is accompanied by urban entropy changes.Urban entropy change reveals the essence of urban sprawl;thus,it can be used tomeasure urban sprawl and better understand its phenomena.However,the literature on entropy change in urban sprawl research is limited to qualitative descriptions,and no convenient or effective quantitativemetrics exist.This study bridges entropy changes and urban formmetrics,analyzing the driving forces in Beijing as a demonstration case.Themain contributions and results are as follows:(1)Anewmethod was constructed to confirm compact or sprawling urban form development.(2)This research shows that the essence of urban sprawl is urban form distortions in an urban self-organizing system resulting from dominant driving forces.(3)This research also shows that urban development with general sprawl characteristics is accompanied by temporally fine-grained compact urban development,and the empirical results show that the urban development state paradigm was neither sprawl nor compact.In future urban management work,it is necessary to regularly monitor changes in various driving factors to prevent urban entropy increases and formulate or adjust urban development plans based on effective assessments.This study contributes by developing a new universal analysis tool and exploring the urban sprawl mechanism,with potential application scenarios that can be extended to any city or region worldwide.
文摘Focusing on“Shared vision for a better world:Spotlight on SDG 17—Partnership for the goals”,the themed event of World Standards Day 2025 was held on October 14 in Beijing.Presided over by Xiao Han,Director-General of Standards Innovative Department of SAMR,the event was attended by Deng Zhiyong,Vice Minister of SAMR and Administrator of SAC,and addressed by Sergio Mujica,ISO Secretary-General,and Jo Cops,IEC President,via videos.
文摘The construction of“park cities”requires a systematic thinking to coordinate the networked development of park system and break through the limitation of emphasizing scale and grade and neglecting dynamic correlation in traditional planning.Taking Haidian District of Beijing as an example,the social network analysis method is introduced to construct the network model of park green spaces.Through indicators such as clustering coefficient,network density and node centrality,the characteristics of its spatial structure and hierarchical relationship are analyzed.It is found that the network integrity presents the characteristics of“highly local concentration and global fragmentation”,fragmented park green space network and missing spatial connection,isolated clusters and collaborative failure,as well as the spatial mismatch between population and resource supply and demand.Hierarchical issues include“structural imbalance and functional disorder”,disorder between network hierarchy and park level,misalignment of functional hierarchy leading to weakened network risk resistance capacity,and a relatively dense distribution of core nodes,etc.In response to the above problems,a multi-level spatial intervention strategy should be adopted to solve the overall problem of the network.Meanwhile,it is needed to clarify the positioning of a park itself and improve the hierarchical system,so as to construct a multi-level and multi-scale park green space network,contribute to the construction of a park city,and provide residents with more diverse activity venues.
文摘From 7th to 12th July,the China Soong Ching Ling Foundation hosted the"Youth Development for a Shared Future"Summer Camp.Coming from 12 countries including Armenia,Gambia,Malaysia,Mongolia,Oman,the Philippines.
文摘On March 14,2025,the Centre for China and Globalisation(CCG)held its first VIP Luncheon of the year at the Beijing International Club.The event was moderated by CCG President Wang Huiyao and brought together over 50 Chinese and international vips,including ambassadors from 17 countries,senior diplomats from 8 countries,as well as representatives from international organisations and chambers of commerce,corporate executives,and prominent media professionals.
文摘Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re planning a trip to Beijing,prepare to be swept up in a living mosaic–more than 3,000 years of history,vibrant contemporary culture,and skyline-defining architecture all fusing and flowing across a vast canvas.This book,Chic Beijing:An Insider’s Guide to Unique New Places,allows readers to take a breathtaking journey through Beijing,the majestic metropolitan capital of China.It also unlocks doors that usually stay closed:rooftop gardens overlooking palace rooftops,micro-galleries tucked into 300-year-old courtyards,and cocktail labs where baijiu meets coffee.
基金supported in part by the National Natural Science Foundation of China under Grant Nos.62371273,62125101 and 62341101the Taishan Scholars Program under Grant No.tsqn202312307+7 种基金the Young Elite Scientists Sponsorship Program by CAST under Grant No.YESS20230372the Shandong Natural Science Foundation under Grant No.ZR2023YQ058the New Cornerstone Science Foundation through the Xplorer Prizethe Xiaomi Young Talents Programthe open research fund of National Mobile Communications Research Laboratory,Southeast University under Grant No.2025D04the China National Postdoctoral Program for Innovative Talents under Grant No.BX20240007the China Postdoctoral Science Foundation under Grant No.2024M760111the Beijing Natural Science Foundation under Grant No.4254067。
文摘A novel digital twin(DT)enabled channel model for 6G vehicular communications in Beijing Central Business District(Beijing CBD)is proposed,which can support the design of intelligent transportation systems(ITSs).A DT space for Beijing CBD is constructed,and two typical transportation periods,i.e.,peak and off-peak hours,are considered to characterize the vehicular communication channel better.Based on the constructed DT space,a DT-enabled vehicular communication dataset is developed,including light detection and ranging(LiDAR)point clouds,RGB images,and channel information.With the assistance of LiDAR point clouds and RGB images,the scatterer parameters,including number,distance,angle,power,and velocity,are analyzed under different transportation periods.The channel non-stationarity and consistency are mimicked in the proposed model.The key channel statistical properties are derived and simulated.Compared to ray-tracing(RT)results,the accuracy of the proposed model is verified.
文摘or 17 years,Peng Shituan served as a Chinese diplomat in Vietnam.He is also a prolific poet who shares his daily feelings and thoughts on WeChat Moments in verse form.“I write 10,000 to 20,000 words a month—I never count the poems,”he said.This year,he published his third Chinese-Vietnamese bilingual poetry collection,A Pool of Nostalgia.The volume features 100 poems written during his stay in Vietnam between 2019 and 2024,reflecting his deep affection for life in Vietnam.
文摘On May 21st,the launch ceremony of the 2025 Textile and Clothing"Optimization of Supply and Upgrade"event was held in Gaoyang,Hebei Province.The theme of the event is to promote the coordinated development and supply-demand docking of the textile and clothing industry in the Beijing–Tianjin–Hebei Region.Representatives from the textile and clothing industries gathered in Gaoyang to discuss the coordinated development of regional industries.The Ministry of Industry and Information Technology,Industry Associations,and leaders of the three local governments jointly announced the official launch of the national industrial upgrading action.
基金supported by the Beijing Science and Technology Planning Project of the Beijing Science and Technology Commission(Z241100009024047)the High-Level Public Health Technical Talent Training Plan(lingjunrencai-01-02).
文摘Respiratory infections are associated with high morbidity and mortality and are a major global health problem[1].Acute respiratory infections are caused by multiple respiratory pathogens,including viruses and bacteria.Viral-bacterial co-infections,which have become increasingly common and a global concern,can lead to substantial complications,causing higher morbidity and adverse prognosis[2].Previous studies have reported low positive detection rates of targeted pathogens related to acute respiratory infections,owing to the limited number of detected pathogens and variations in the sensitivity of diagnostic methods[3-4].Low positive detection rates may impede our understanding of respiratory pathogen characteristics and hamper the development of precise treatment and prevention strategies.
基金supported by the National Key Research and Development Program of China(No.2022YFC3701205)the National Natural Science Foundation of China(No.41975173)the Science and Technology Development Fund of the Chinese Academy of Meteorological Sciences(No.2021KJ011)。
文摘In recent years,incidents of simultaneous exceedance of PM_(2.5)and O_(3) concentrations,termed PM_(2.5)and O_(3) co-pollution events,have frequently occurred in China.This study conducted atmospheric circulation analysis on two typical co-pollution events in Beijing,occurring from July 22 to July 28,2019,and from April 25 to May 2,2020.These events were categorized into pre-trough southerly airflow type(Type 1)and post-trough northwest flow type(Type 2).Subsequently,sensitivity analyses using the GRAPES-CUACE adjoint model were performed to quantify the contributions of precursor emissions from Beijing and surrounding areas to PM_(2.5)and O_(3) concentrations in Beijing for two types of co-pollution.The results indicated that the spatiotemporal distribution of sensitive source region varied among different circulation types.Primary PM_(2.5)(PPM_(2.5))emissions from Hebei contributed the most to the 24-hour average PM_(2.5)(24-h PM_(2.5))peak concentration(41.6%-45.4%),followed by Beijing emissions(31%-35.7%).The maximum daily 8-hour average ozone peak concentration was primarily influenced by the emissions from Hebei and Beijing,with contribution ratios respectively of 32.8%-44.8% and 29%-42.1%.Additionally,NO_(x)emissions were the main contributors in Type 1,while both NO_(x)and VOCs emissions contributed similarly in Type 2.The iterative emission reduction experiments for two types of co-pollution indicated that Type 1 required emission reductions in NO_(x)(52.4%-71.8%)and VOCs(14.1%-33.8%)only.In contrast,Type 2 required combined emission reductions in NO_(x)(37.0%-65.1%),VOCs(30.7%-56.2%),and PPM_(2.5)(31%-46.9%).This study provided a reference for controlling co-pollution events and improving air quality in Beijing.
文摘In January 2025,the Beijing Chamber of Commerce(Singapore)was officially established.Coinciding with the 35th anniversary of China-Singapore diplomatic relations and the 60th anniversary of Singapore’s independence,its founding is part of a timely response to the growing needs of businesses and communities from both Beijing and Singapore to deepen mutual understanding and expand cooperation.As a Chinese person who has lived and worked in Singapore for many years,Feng Jianli,president of the Beijing Chamber of Commerce(Singapore),knows first-hand just how challenging it can be for new immigrants from Beijing to adapt to identity transitions and access local support.The chamber was founded not only to help them take root and thrive,but also to serve as a platform for deeper people-to-people exchange between Singapore and Beijing.
文摘On October 21,2025,the ASEAN-China(Beijing Municipal Administrative Center)Trade and Investment Promotion Conference took place at the Beijing International Fortune Center.Under the theme“Joining Hands for Green Development and a Better Future,”the conference was supervised by China International Communications Group(CICG)and co-hosted by ASEAN-China Centre(ACC),Beijing Municipal Administrative Center Management Committee,Beijing Tongzhou District People’s Government,and CICG Asia-Pacific.
