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New chapter in reform and development of organ donation and transplantation in China: Embracing past, grounding in national conditions, upholding steadfast belief, and looking forward to future 被引量:3
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作者 Hong-Tao Zhao Shu-Sen Zheng +12 位作者 Jia Fan Jia-Hong Dong Zhong-Hua Chen Wu-Jun Xue Qi-Fa Ye Hai-Bo Wang Jing-Yu Chen Zhe Zheng Feng Huo Xiao-Shun He Miao Pu Jie Zhao Jie-Fu Huang 《Hepatobiliary & Pancreatic Diseases International》 2025年第1期6-13,共8页
The reform stems from honesty and determination. Since 2005, organ donation and transplantation in China has undergone thorough reform, which complies with legislation requirements and ethical principles established b... The reform stems from honesty and determination. Since 2005, organ donation and transplantation in China has undergone thorough reform, which complies with legislation requirements and ethical principles established by the World Health Organization(WHO). Reform in China has demonstrated the unwavering confidence and utmost determination of the Chinese government and the Chinese transplantation community. The year 2015 marked a historic turning point when voluntary donations from Chinese citizens became the sole legitimate source for organ transplantation. Since 2015, China has gradually established and refined the “Chinese Mode” and “China System” for organ donation and transplantation, fulfilling its political pledge of reform, and has garnered international recognition, and fostered a social culture which promotes organ donation. This article reviewed the history of reform on organ donation and transplantation in China, presented a new pattern of establishment of organ donation system in the new era of the country, and the direction of advances in the future. 展开更多
关键词 Reform LEGISLATION Organ donation Organ transplantation Chinese mode High quality development
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Do energy intensity,resource abundance and inequality drive energy poverty?Evidence from developing countries 被引量:1
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作者 Ashar Awan Mustafa Kocoglu +2 位作者 Mohammad Subhan Mohammed Shakib Nora Yusma bte Mohamed Yusoff 《Geoscience Frontiers》 2025年第3期119-136,共18页
Energy poverty in developing countries is a critical issue characterized by the lack of access to modern energy services,such as electricity and clean cooking facilities,as marked in SDG 7.This study explores the corr... Energy poverty in developing countries is a critical issue characterized by the lack of access to modern energy services,such as electricity and clean cooking facilities,as marked in SDG 7.This study explores the correlations between energy poverty,energy intensity,resource abundance,and income inequality,as these factors have been theorized to play important roles in influencing energy poverty in developing countries.By observing that the dataset is heterogeneous across the countries and over the time frame,we use the Method of Moments Quantile Regression(MMQR)to analyze our developing countries’data from 2000 to 2019.Our findings indicate that energy intensity is a significant factor influencing energy poverty,suggesting that higher energy consumption relative to the sample countries can exacerbate this issue.Additionally,we observe that income inequality within the sample countries is a critical determinant of energy poverty levels,highlighting the dynamics between economic disparity and access to energy resources.Interestingly,our study reveals that resource abundance acts as a blessing rather than a curse in terms of energy poverty,implying that countries rich in natural resources may have better opportunities to combat energy deprivation.Finally,we emphasize the vital role of financial markets in addressing energy poverty on a global scale,suggesting that robust financial systems can facilitate investments and innovations aimed at improving energy access for vulnerable populations.The results from the robustness analysis support the empirical results obtained from the main estimation.The empirical findings of the present study advance important comprehensions for policymakers to adopt energy policies that address the complex challenges of energy poverty and promote inclusive energy access. 展开更多
关键词 Energy poverty Natural Resources Energy Intensity INEQUALITY developing countries SDGs
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Developing river ethics:Advancing the understanding of water governance principles and promoting the modernization of water governance systems and capabilities 被引量:1
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作者 Yunchang Zhang Bo Liu +2 位作者 Yang Ding Jinyong Zhao Chang Li 《River》 2025年第1期21-28,共8页
River ethics,a significant advancement inspired by Chinese President XI Jinping's ecological civilization thought,embodies the philosophical essence of river governance and represents a legacy of innovation by gen... River ethics,a significant advancement inspired by Chinese President XI Jinping's ecological civilization thought,embodies the philosophical essence of river governance and represents a legacy of innovation by generations of water resources professionals.Rooted in river ecology,it offers a framework for advancing modern water governance systems and capabilities.This paper examines eight dimensions of river ethics to provide actionable recommendations:enhancing knowledge systems on water,rivers,and lakes;addressing critical challenges in water governance to strengthen the foundational role of water authorities in ensuring water security,resource management,ecological sustainability and environmental protection;optimizing water project planning to mitigate ecological impacts;ensuring high standards in the lifecycle management of water projects;refining water diversion strategies for precise scheduling;utilizing ecosystem complexity for river and lake restoration;implementing tiered management of water-related disasters;and driving reforms to modernize water governance systems and mechanisms. 展开更多
关键词 ecosystem restoration high-quality development of water systems river ecology river ethics water governance
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Land transaction trajectories of China's overseas industrial parks in developing countries:Evidence from Southeast Asia 被引量:1
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作者 LI Dongxue HU Qiao 《Journal of Geographical Sciences》 2025年第6期1286-1310,共25页
Foreign-funded overseas industrial parks(OIPs)are crucial for attracting foreign investment and promoting globalization in developing countries.However,large-scale land acquisition for these parks generates conflicts ... Foreign-funded overseas industrial parks(OIPs)are crucial for attracting foreign investment and promoting globalization in developing countries.However,large-scale land acquisition for these parks generates conflicts between developers and local stakeholders,increasing development costs.A qualitative multicase study was conducted in this study to analyze the land transaction trajectories of China's OIPs.Four OIPs were selected to reveal the underlying mechanisms from the perspectives of institutional arrangements,governance mechanisms,and enterprise heterogeneity.The findings indicate that in host countries with insufficient institutional development,local governments are more inclined to directly engage in OIP land acquisition.High-level intergovernmental mechanisms facilitate land acquisition processes,although their efficacy depends largely on administrative power allocation across parks in host countries.The results also indicate that enterprise characteristics significantly influence land acquisition,where microscale private enterprises lacking political connections often employ low-cost,bottom-up strategies by leveraging international experience.In summary,policy-makers in developing countries should prioritize enhancing OIP governance to mitigate transaction costs,promote diversified land supply,and optimize land allocation.By depicting China's OIP land acquisition processes,this study deepens the academic understanding of OIP governance in developing countries and related international land transactions,offering practical OIP management insights for governments in both host and parent countries. 展开更多
关键词 land transaction trajectories institutional arrangements governance mechanisms enterprise heterogeneity overseas industrial parks developing countries
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The Dilemma of Developing Architectural Minds Aiming for Sustainability
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作者 Mohamed Salah Gharib 《Journal of Civil Engineering and Architecture》 2025年第2期82-91,共10页
We do so much to prepare our children for the future,but are we doing enough to prepare the future for our children?To do so we must seek sustainability.Sustainability is a new way of thinking about an age-old concern... We do so much to prepare our children for the future,but are we doing enough to prepare the future for our children?To do so we must seek sustainability.Sustainability is a new way of thinking about an age-old concern:ensuring that our children and grandchildren inherit a tomorrow that is at least as good as today,preferably better.We want to make sure that the way we live our lives is sustainable that can continue and keep improving for long time.And since buildings produce half of all greenhouse gases and account for one-sixth of the world's freshwater withdrawals,one-quarter of its wood harvest and two fifths of its material and energy flows.By several estimates,we will double the size of the built environment over the next twenty to forty years.Therefore,there is a critical and immediate need to shift thinking on how the built environment is designed.To reduce environmental impact,protect public health and improve environmental equity and justice,we must change principles for building practice.Designers in general and architects in particular should play a high-profile leadership role in this transformation. 展开更多
关键词 Sustainable development linear development cyclic development ARCHITECT architectural education
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Application of BIM in Developing Countries and Implications
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作者 Shuxing Kang Jia Wu 《Journal of Architectural Research and Development》 2025年第5期1-7,共7页
Building Information Modelling(BIM)technology can solve construction issues from multiple perspectives,including technical and managerial.While existing research has primarily focused on BIM’s benefits and framework ... Building Information Modelling(BIM)technology can solve construction issues from multiple perspectives,including technical and managerial.While existing research has primarily focused on BIM’s benefits and framework development,few studies discussed whether BIM can be successfully applied in developing countries.This paper examines the current status and key obstacles hindering BIM adoption in developing countries,analyzing their underlying causes.Notably,the study reveals that high BIM awareness does not directly lead to high BIM usage.The findings aim to provide theoretical support for enhancing the BIM environment and increasing implementation feasibility in developing countries.Additionally,the research identifies critical barriers for governments to address in promoting BIM adoption,offering a foundation for policy formulation. 展开更多
关键词 BIM Obstacles developing countries
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Spatiotemporal Mapping of the Oxytocin Receptor at Single-Cell Resolution in the Postnatally Developing Mouse Brain
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作者 Hao Li Ying Li +6 位作者 Ting Wang Shen Li Heli Liu Shuyi Ning Wei Shen Zhe Zhao Haitao Wu 《Neuroscience Bulletin》 2025年第2期224-242,共19页
The oxytocin receptor(OXTR)has garnered increasing attention for its role in regulating both mature behaviors and brain development.It has been established that OXTR mediates a range of effects that are regionspecifc ... The oxytocin receptor(OXTR)has garnered increasing attention for its role in regulating both mature behaviors and brain development.It has been established that OXTR mediates a range of effects that are regionspecifc or period-specifc.However,the current studies of OXTR expression patterns in mice only provide limited help due to limitations in resolution.Therefore,our objective was to generate a comprehensive,high-resolution spatiotemporal expression map of Oxtr mRNA across the entire developing mouse brain.We applied RNAscope in situ hybridization to investigate the spatiotemporal expression pattern of Oxtr in the brains of male mice at six distinct postnatal developmental stages(P7,P14,P21,P28,P42,P56).We provide detailed descriptions of Oxtr expression patterns in key brain regions,including the cortex,basal forebrain,hippocampus,and amygdaloid complex,with a focus on the precise localization of Oxtr+cells and the variance of expression between diferent neurons.Furthermore,we identifed some neuronal populations with high Oxtr expression levels that have been little studied,including glutamatergic neurons in the ventral dentate gyrus,Vgat+Oxtr+cells in the basal forebrain,and GABAergic neurons in layers 4/5 of the cortex.Our study provides a novel perspective for understanding the distribution of Oxtr and encourages further investigations into its functions. 展开更多
关键词 Oxytocin receptor RNAscope Expression pattern Postnatal development
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Bugis Tribe Community Behavior in Developing Vernacular House Models in the Coastal Area of South Sulawesi Province
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作者 Rahmansah Nurlita Pertiwi +1 位作者 Muhammad Yusri Bachtiar Mithen Lullulangi 《Journal of Environmental & Earth Sciences》 2025年第4期152-164,共13页
This study aims to understand the behavior of the Bugis community in developing vernacular house models in the coastal areas of South Sulawesi Province,along with the factors influencing this behavior,such as knowledg... This study aims to understand the behavior of the Bugis community in developing vernacular house models in the coastal areas of South Sulawesi Province,along with the factors influencing this behavior,such as knowledge,motivation,attitude,locus of control,commitment,concern,and income level.Bugis vernacular houses reflect local wisdom that is adapted to environmental,socio-cultural conditions,and the challenges of modernization.This correlational research was conducted in the regencies of Pangkajene and Kepulauan,Barru,and Bone,with a sample of 300 household heads.The variables analyzed include knowledge,motivation,attitude,locus of control,commitment,concern,and income level.Data were collected through knowledge tests and questionnaires and were analyzed using simple and multiple regression tech-niques.The results show that the Bugis community’s behavior in developing vernacular houses is moderate.Individually,motivation,locus of control,commitment,and concern significantly influence behavior,while knowledge,attitude,and income do not have a significant impact.However,collectively,all independent variables(knowledge,motivation,attitude,locus of control,commitment,concern,and income)affect the behavior of the Bugis community in developing vernacular houses in coastal areas.This study provides valuable insights into the environmental and social adaptations of the Bugis coastal community,as well as efforts to preserve culture through the sustainable development of vernacular houses. 展开更多
关键词 Bugis Vernacular Houses Local Wisdom Community Behavior South Sulawesi Coast Sustainable development
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生成式人工智能赋能高中英语读写结合的教学实践——以Developing ideas:A Boy's Best Friend为例
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作者 钟焜 王彩晨 《中小学数字化教学》 2025年第10期44-48,共5页
《普通高中英语课程标准(2017年版2020年修订)》指出,在课程实施过程中,应重视营造信息化教学环境,及时了解和跟进科技进步和学科发展,充分发挥现代教育技术对教与学的支持与服务功能,选择恰当的数字技术和多媒体手段,确保虚拟现实、人... 《普通高中英语课程标准(2017年版2020年修订)》指出,在课程实施过程中,应重视营造信息化教学环境,及时了解和跟进科技进步和学科发展,充分发挥现代教育技术对教与学的支持与服务功能,选择恰当的数字技术和多媒体手段,确保虚拟现实、人工智能(AI)、大数据等新技术的应用有助于促进学生的有效学习和英语学科核心素养的形成与发展。 展开更多
关键词 生成式人工智能 developing ideas 读写结合
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Best practice for developing integrative Chinese-Western medicine databases using electronic health records
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作者 REN Yan JIA Yulong +7 位作者 LIANG Wengxue XU Ye LIU Xuehong XIONG Yiquan JIANG Hao ZOU Kang SUN Xin TAN Jing 《World Journal of Integrated Traditional and Western Medicine》 2025年第3期174-186,共13页
Objectives:Electronic health records(EHRs)offer valuable real-world data(RWD)for Chinese medicine research.However,significant methodological challenges remain in developing integrative Chinese-Western medicine(ICWM)d... Objectives:Electronic health records(EHRs)offer valuable real-world data(RWD)for Chinese medicine research.However,significant methodological challenges remain in developing integrative Chinese-Western medicine(ICWM)databases.This study aims to establish a best-practice methodological framework,referred to as BRIDGE,to guide the construction of ICWM databases using EHRs.Methods:We developed the methodological framework through a comprehensive process,including systematic literature review,synthesis of empirical experiences,thematic expert discussions,and consultation with an external panel to reach consensus.Results:The BRIDGE framework outlines 6 core components for ICWM-EHR database development:Overall design,database architecture,data extraction and linkage,data governance,data verification,and data quality evaluation.Key data elements include variables related to study population,treatment or exposure,outcomes,and confounders.These databases support various research applications,particularly in evaluating the effectiveness and safety of integrative therapies.To demonstrate its practical value,we developed an ICWM-EHR database on women’s reproductive lifespan,encompassing 2,064,482 patients.This database captures women’s health conditions across the life course,from reproductive age to older adulthood.Conclusions:The BRIDGE methodological framework provides a standardized approach to building high-quality ICWM-EHR databases.It offers a unique opportunity to strengthen the methodological rigor and real-world relevance of Chinese medicine research in integrated healthcare settings. 展开更多
关键词 Chinese-Western medicine database Electronic health records Methodological framework Database development Women’s reproductive health database
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Ecological Awakening Dehong Prefecture is pushing the boundaries of ecological civilization by developing a bird-watching economy
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作者 Zheng Bin Liu Yang 《China Report ASEAN》 2025年第6期76-77,共2页
With the first rays of dawn peeking through the rainforest at Shiti Village,Dehong Dai and Jingpo Autonomous Prefecture,Yunnan Province,Xu Xiaolong,a bird-watching guide from the Jingpo ethnic group,led a German bird-... With the first rays of dawn peeking through the rainforest at Shiti Village,Dehong Dai and Jingpo Autonomous Prefecture,Yunnan Province,Xu Xiaolong,a bird-watching guide from the Jingpo ethnic group,led a German bird-watching group into the jungle.His great-grandfather made a living by hunting“weird-looking birds”in the mountains.Today,the birds(Great Hornbill)are attracting tourist dollars from other parts of the world without dodging bullets.In Shiti Village,bird-watchers can enjoy the chirping of Great Hornbills and feel the rumbling in the air as the birds fly past.The village on the Chinese border with Myanmar was formerly poverty-stricken,with an average annual income of barely 2,000 yuan(US$305)per household 10 years ago.Today,the average annual income has grown to 150,000 yuan(US$23,075).It is a shining example of the successful practice of the notion that“lucid waters and lush mountains are invaluable assets.” 展开更多
关键词 bird watching economy sustainable development great hornbill chirping great hor Dehong prefecture ecological awakening ecological civilization Yunnan province
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Emerging Markets and Developing Countries Forum on Bridging the AI Divide and Opening Ceremony of AIM Global CoE held
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作者 Olive Liu 《China Standardization》 2025年第5期32-35,共4页
The Emerging Markets and Developing Countries Forum on Bridging the AI Divide and Opening Ceremony of AIM Global CoE were held on July 27 in Minhang district,Shanghai.The event was hosted by AIM Global CoE,and co-orga... The Emerging Markets and Developing Countries Forum on Bridging the AI Divide and Opening Ceremony of AIM Global CoE were held on July 27 in Minhang district,Shanghai.The event was hosted by AIM Global CoE,and co-organized by Shanghai Artificial Intelligence Research Institute(SAIRI),Shanghai Technology Innovation Center,Shanghai Grand Neobay Investment Development Group,and Organizing Committee of AI Journey Conference.Asian Association of Business Incubation(AABI)and SAIRI served as the international partners. 展开更多
关键词 AI divide opening ceremony developing countries aim global coeand artificial intelligence research bridging ai divide AIM Global COE emerging markets
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Success Factors of Asia‐Pacific Fast‐Developing Regions’Technological Innovation Development and Economic Growth 被引量:3
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作者 Elena Litsareva 《International Journal of Innovation Studies》 2017年第1期72-88,共17页
Asia‐Pacific’s fast‐developing countries and regions(FDCs)—South Korea,Taiwan Province of China,Singapore,Malaysia,and Thailand—demonstrate the most successful economic development models.The government represent... Asia‐Pacific’s fast‐developing countries and regions(FDCs)—South Korea,Taiwan Province of China,Singapore,Malaysia,and Thailand—demonstrate the most successful economic development models.The government represents the primary guarantee of FDCs’economic and social construction.Public and foreign investments and government policies to stimulate local and foreign businesses play a decisive role in the development of technological innovations in these FDCs.In these countries,basic research is increasing through the development of knowledge‐based industries,the role of research institutes,the applied research undertaken,and the value of educational institutions.Close cooperation between science and industry led to a change in the structure and nature of the economy,which has become increasingly dependent on new knowledge and ideas. 展开更多
关键词 fast‐developing countries Innovative environment Knowledge‐based economy Human resources
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Developmental toxicity assessment of neonicotinoids and organophosphate esters with a human embryonic stem cell-and metabolism-based fast-screening model 被引量:2
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作者 Shuxian Zhang Miaomiao Zhao +3 位作者 Shichang Li Renjun Yang Nuoya Yin Francesco Faiola 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2024年第3期370-381,共12页
In recent years,neonicotinoids(NEOs)and organophosphate esters(OPEs)have been widely used as substitutes for traditional pesticides and brominated fame-retardants,respectively.Previous studies have shown that those co... In recent years,neonicotinoids(NEOs)and organophosphate esters(OPEs)have been widely used as substitutes for traditional pesticides and brominated fame-retardants,respectively.Previous studies have shown that those compounds can be frequently detected in environmental and human samples,are able to penetrate the placental barrier,and are toxic to animals.Thus,it is reasonable to speculate that NEOs and OPEs may have potential adverse effects in humans,especially during development.We employed a human embryonic stem cell differentiation-and liver S9 fraction metabolism-based fast screening model to assess the potential embryonic toxicity of those two types of chemicals.We show that four NEO and five OPE prototypes targeted mostly ectoderm specification,as neural ectoderm and neural crest genes were down-regulated,and surface ectoderm and placode markers up-regulated.Human liver S9 fraction's treatment could generally reduce the effects of the chemicals,except in a few specific instances,indicating the liver may detoxify NEOs and OPEs.Our findings suggest that NEOs and OPEs interfere with human early embryonic development. 展开更多
关键词 NEONICOTINOIDS Organophosphate esters Human embryonic stem cells fast screening model developmental toxicity
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基于4D-FastDIA定量蛋白质组的富硒与非富硒鸡蛋差异表达蛋白鉴定及功能分析
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作者 袁琳 赵文竹 +2 位作者 吴春剑 于一丁 于志鹏 《食品科学》 北大核心 2025年第12期163-170,共8页
本研究旨在利用四维快速数据非依赖性采集(4D-fast data-independent acquisition,4D-FastDIA)定量蛋白质组学技术,解析富硒鸡蛋与非富硒鸡蛋中差异表达的蛋白及其功能特性。通过液相色谱-串联质谱分析技术结合生物信息学方法,比较组间... 本研究旨在利用四维快速数据非依赖性采集(4D-fast data-independent acquisition,4D-FastDIA)定量蛋白质组学技术,解析富硒鸡蛋与非富硒鸡蛋中差异表达的蛋白及其功能特性。通过液相色谱-串联质谱分析技术结合生物信息学方法,比较组间相对定量的蛋白质,探讨蛋白质的差异表达规律,并利用基因本体论注释分析和京都基因与基因组百科全书通路富集分析法对蛋白质功能和代谢通路进行分析。蛋白质组学分析共鉴定到257种蛋白质,其中251种蛋白质被定量分析。蛋清中共鉴定到48种差异蛋白,其中28种蛋白表达下调,20种蛋白表达上调。蛋黄中共鉴定到82种差异蛋白,其中58种蛋白表达下调,24种蛋白表达上调。通过比较天然富硒鸡蛋与非富硒鸡蛋中蛋白质的表达水平,发现丝氨酸肽酶抑制剂、免疫球蛋白样结构域蛋白、卵转铁蛋白和黏蛋白-6在富硒鸡蛋中的表达水平显著高于非富硒鸡蛋。通过基因本体注释分析和京都基因与基因组百科全书通路富集分析发现,天然富硒鸡蛋中与免疫调节、抗菌、抗氧化相关的蛋白质在表达水平上显著高于非富硒鸡蛋。研究结果可为揭示富硒鸡蛋与非富硒鸡蛋在营养成分价值上的差异及其分子机制提供科学依据。 展开更多
关键词 鸡蛋 天然富硒 非富硒 蛋白质组学 四维快速数据非依赖性采集
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Nutrition impacts of non-solid cooking fuel adoption on under-five children in developing countries 被引量:1
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作者 Yalin Tang Yuhe Guo +1 位作者 Gang Xie Chengfang Liu 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第2期397-413,共17页
This paper examines the nutrition impacts of using non-solid cooking fuel on under-five children in developing countries.We draw on data from more than 1.12 million children in 62 developing countries from the Demogra... This paper examines the nutrition impacts of using non-solid cooking fuel on under-five children in developing countries.We draw on data from more than 1.12 million children in 62 developing countries from the Demographic and Health Surveys(DHS).Results from both fixed effects(FE)and instrumental variable(IV)estimates show that using non-solid cooking fuel significantly improves the nutrition outcomes of under-five children.Compared with their peers from households mainly using solid fuel,children from households mainly using non-solid fuel exhibit a lower probability of experiencing stunting(by 5.9 percentage points)and being underweight(by 1.2 percentage points).Our further investigation provides evidence for several underlying mechanisms,such as improved indoor air quality,induced reduction in children’s respiratory symptoms,benefits on maternal health,and reduction in maternal time spent on fuel collection or cooking.Heterogenous analyses suggest that the nutrition benefits of using non-solid cooking fuel are more prominent among boys,children above three years old,and those from households of lower socioeconomic status,rural areas,and Southeast Asia. 展开更多
关键词 non-solid cooking fuel nutrition benefits under-five children developing countries
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宇宙灯塔捕手:FAST开启脉冲星发现和研究新时代
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作者 周德江 王陈 韩金林 《物理》 北大核心 2025年第10期667-678,共12页
脉冲星作为宇宙中极端物理条件下的天然实验室,是研究中子星物理、引力理论及星际介质的重要探针。中国500米口径球面射电望远镜(FAST,被誉为“中国天眼”)凭借其超高灵敏度,为射电脉冲星的大规模深度巡天和精准测时提供了前所未有的能... 脉冲星作为宇宙中极端物理条件下的天然实验室,是研究中子星物理、引力理论及星际介质的重要探针。中国500米口径球面射电望远镜(FAST,被誉为“中国天眼”)凭借其超高灵敏度,为射电脉冲星的大规模深度巡天和精准测时提供了前所未有的能力,正在显著推进脉冲星的前沿研究。文章将系统介绍脉冲星的发现、搜寻方法和族群分布,并以FAST银道面脉冲星巡天项目为例,聚焦大口径射电望远镜在射电脉冲星搜索、观测及物理研究中的突破性贡献。之后将阐述FAST如何通过高灵敏度观测来系统性揭示射电脉冲星分布规律,并探讨它们在完善银河系结构模型、描绘磁场分布和研究星际介质等方面的独特科学价值。 展开更多
关键词 脉冲星 fast望远镜 射电巡天 银河系
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Research on Developing an Assessment Scale for Tourism Experience Elements of Ancient Shu Road Heritage Trail 被引量:1
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作者 Wang Yuan Wang Bo Zhou Jiang 《Contemporary Social Sciences》 2024年第5期118-142,共25页
Cultural ancient roads,known in Chinese as gudao,serve as heritage trails that carry historical exchanges across various regions in China.Due to their extensive preservation,wide geographical distribution,diverse them... Cultural ancient roads,known in Chinese as gudao,serve as heritage trails that carry historical exchanges across various regions in China.Due to their extensive preservation,wide geographical distribution,diverse thematic variations,and considerable tourist appeal,these paths have emerged as representative heritage trails,increasingly transforming into a novel tourism product experience that is highly favored by tourists and recognized by government authorities.However,research on ancient roads for tourism in China currently lacks a systematic theoretical framework,as well as relevant policies,regulations,and standards to guide their practical development.Therefore,there is a pressing need to draw upon international best practices and conduct foundational research to develop an experience element system that aligns with the perceptions,behaviors,and consumption characteristics of Chinese tourists,thereby advancing theoretical exploration in this field.This study focuses on the representative Ancient Shu Road as a case study and employs a mixed-method approach that integrates qualitative and quantitative research.It aims to construct a tourist-centric scale for the experience elements of ancient road tourism while analyzing the interactive relationship between these experience elements and tourist needs.This study addresses a significant gap in the development of indicator systems for domestic studies of ancient road tourism experiences.Ultimately,the study establishes a comprehensive scale that encompasses three core categories—trail resources and environment,facilities and services,and modes of tourism activities—along with eight primary dimensions:core resources,surrounding cultural environment,surrounding natural environment,tourism reception facilities and services,infrastructure and support services,information facilities and information services,and outdoor and recreational activities.This scale consists of thirty-two specific items,providing a robust reference for future research endeavors.Additionally,the study proposes specific development strategies related to key mechanisms,spatial configuration,and facility construction to enhance the overall development of ancient road tourism. 展开更多
关键词 ancient roads heritage trails tourism experience elements scale development
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基于自适应阈值的型钢精确角点FAST检测算法
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作者 包家汉 孙德尚 +1 位作者 黄建中 胡政 《上海交通大学学报》 北大核心 2025年第5期691-702,共12页
基于机器视觉的在线型钢平直度检测中,对型钢图像关键角点快速、准确地提取是实现精确检测的关键技术问题.针对加速分割检验特征提取(FAST)算法需要人工设定角点筛选阈值和角点提取存在大量伪角点的问题,提出一种自适应阈值生成及校正策... 基于机器视觉的在线型钢平直度检测中,对型钢图像关键角点快速、准确地提取是实现精确检测的关键技术问题.针对加速分割检验特征提取(FAST)算法需要人工设定角点筛选阈值和角点提取存在大量伪角点的问题,提出一种自适应阈值生成及校正策略,能够在自动获取初始阈值的基础上,根据角点数是否达到初始角点集要求对阈值实时校正直至达到适当值,以减少关键角点遗漏.在采用FAST提取角点的基础上,利用最小核心值相似区域(SUSAN)算法剔除伪角点,以保证关键角点提取的有效性.试验证明,这种基于自适应阈值的FAST角点检测算法(FAST-A),在检测环境和对象特性发生变化时,仍然可以准确、快速地检测到型钢关键角点,在为型钢平直度检测实时提供精确角点的基础上,提高角点提取的自适应性. 展开更多
关键词 型钢 角点检测 加速分割检验特征提取算法 最小核心值相似区域算法 自适应阈值
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FAST宁静区生态脆弱性时空演变及情景模拟
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作者 黄贤凤 苏维词 +1 位作者 勾容 权小丫 《水土保持研究》 北大核心 2025年第2期295-304,共10页
[目的]揭示FAST宁静区2000—2020年的生态脆弱性时空变化特征,为维护该区域的生态安全提供科学参考。[方法]基于FAST宁静区生态本底特征,从“敏感性—恢复力—压力度”角度构建生态脆弱性评价体系,运用AHP-熵权法和GIS技术等对FAST宁静... [目的]揭示FAST宁静区2000—2020年的生态脆弱性时空变化特征,为维护该区域的生态安全提供科学参考。[方法]基于FAST宁静区生态本底特征,从“敏感性—恢复力—压力度”角度构建生态脆弱性评价体系,运用AHP-熵权法和GIS技术等对FAST宁静区2000—2020年生态脆弱性时空演变及未来预设情景进行了量化分析。[结果](1)研究区脆弱性以中度脆弱为主,轻度、中度、重度脆弱区合计占75%左右,微度和极度脆弱区合计只占约25%。(2) 20年间研究区生态脆弱性整体下降,高强度生态脆弱区主要向较低等级转化,前10 a生态脆弱性略有上升,而后10 a生态脆弱性明显降低,研究区生态环境整体呈改善的趋势。(3)从FAST圈层(核心区、中间区、边远区)动态变化看,核心区的生态得到较好的改善,恶化区面积占比由前10 a的19.57%降至7.12%,而稳定区和低度改善区的面积在上升,由前10 a的79.88%增至92.50%;中间区和边远区变化趋于稳定,中间区稳定区和低度改善区面积占比由68.36%增至87.10%,而边远区稳定区占比由40.78%增至59.50%,但边远区局部存有恶化风险。(4)基于生态优先保护和乡村振兴需求两种情景模拟,2030年FAST宁静区的生态脆弱性整体指数分别下降5.91%和2.22%,前者生态保护效果较优,但后者更好地兼顾生态保护和乡村发展需要,综合考虑建议推荐乡村振兴发展模式。[结论]研究时段内,FAST宁静区生态脆弱性整体降低,核心区生态环境改善明显,中间区、边远区后10 a相比前10 a整体生态在缓慢转好。 展开更多
关键词 生态脆弱性 时空演变 情景模拟 fast宁静区 圈层变化
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