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A large-scale village classification model for tailored rural revitalization:A case study of Hubei province,China

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Journal of Geographical Sciences 2024年第12期34卷 2364-2392页

作者： PAN Yupiao ZHAO Xiang ZHANG Yiqing luo haifeng School of Resources and Environmental Sciences Wuhan UniversityWuhan 430079China

A comprehensive understanding of village development patterns and the identification of different village types is crucial for formulating tailored planning for rural ***,a model for large-scale village classification to support tailored rural revitalization planning is still *** study aims to develop a large-scale village classification model using the Gaussian Mixture Models to support tailored rural revitalization ***,we propose a multi-dimensional index system to capture the diverse features of massive ***,the GMM clustering algorithm is applied to identify distinct village types based on their unique *** model was employed to classify the 25,409 villages in Hubei province in China into four *** in these classes exhibit discernible differences in spatial distribution,topography,location,economic development level,industrial structure,infrastructure,and resource *** addition,the GMM-based village classification model demonstrates a high level of agreement with evaluations made by planning experts,confirming its accuracy and *** the empirical study,our model achieves an overall accuracy of 95.29%,signifying substantial concordance between the classifications made by planning experts and the results generated by our *** on the identified features,tailored paths are proposed r each village class for rural revitalization efforts.

关键词： rural revitalization village classification Gaussian mixture models rural regional development Hubei province

Prediction of a common neutralizing epitope of H5N1 avian influenza virus by in silico molecular docking

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Chinese Science Bulletin 2008年第6期53卷 868-877页

作者： YAN YuanQing LI ShaoWei YANG ChunYan luo WenXin WANG MingQiao CHEN YiXin luo haifeng wu Ting ZHANG Jun XIA NingShao National Institute of Diagnostics and Vaccine Development in Infectious Diseases/Key Laboratory of the Ministry of Education forCell Biology and Tumor Cell Engineering Xiamen University Xiamen 361005 China

The H5N1 avian influenza virus (AIV) has widely spread in Asia, Europe and Africa, making a large amount of economic loss. Recently, our research group has screened a common neutralizing mono- clonal antibody named 8H5, which can neutralize almost all H5 subtype AIV ever isolated so far. Obvi- ously, this monoclonal antibody would benefit for research and development of the universal AIV vac- cine and design of the drug against H5N1 AIV in high mutation rate. In this study, the homology mod- eling was applied to generate the 3D structure of 8H5 Fab fragment, and "canonical structure" method was used to define the specified loop conformation of CDR regions. The model was subjected to en- ergy minimization in cvff force field with Discovery module in Insight II program. The resulting model has correct stereochemistry as gauged from the Ramachandran plot calculation and good 3D-structure compatibility as assessed by interaction energy analysis, solvent accessible surface (SAS) analysis, and Profiles-3D approach. Furthermore, the 8H5 Fab model was subjected to docking with three H5 subtype hemagglutinin (HA) structures deposited in PDB (ID No: 1jsm, 2ibx and 2fk0) respectively. The result indicates that the three docked complexes share a common binding interface, but differ in bind- ing angle related with HA structure similarity between viral subtypes. In the light of the three HA inter- faces with structural homology analysis, the common neutralizing epitope on HA recognized by 8H5 consists of 9 incontinuous amino acid residues: Asp68, Asn72, Glu112, Lys113, Ile114, Pro118, Ser120, Tyr137, Tyr252 (numbered as for 1jsm sequence). The primary purpose of the present work is to provide some insight into structure and binding details of a common neutralizing epitope of H5N1 AIV, thereby aiding in the structure-based design of universal AIV vaccines and anti-virus therapeutic drugs.

关键词：禽流感 H5N1病毒抗原决定基红血球凝聚素

Efficacy and complications of inoperable malignant distal biliary obstruction treatment by metallic stents:fully covered or uncovered?

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Gastroenterology Report 2023年第1期11卷 151-158页

作者： Jiangning Gu Xiaoyi Guo Yong Sun Bin Fan Haoran Li Ting luo haifeng luo Jiao Liu Feng Gao Yuan Gao Guang Tan Xiaoming Liu Zhuo Yang Department of Endoscope General Hospital of Northern Theater CommandShenyangLiaoningP.R.China Department of Hepatobiliary Surgery The First affiliated Hospital of Dalian Medical UniversityDalianLiaoningP.R.China Department of General Surgery The First Hospital of Northwest University(Xi’an No.1 Hospital)Xi’anShaanxiP.R.China Department of Anesthesiology The First affiliated Hospital of Dalian Medical UniversityDalianLiaoningChina

Obstructive jaundice caused by malignant distal biliary obstruction is a common clinical symptom in patients with inoperable biliary–pancreatic *** retrograde cholangiopancreatography(ERCP)-guided stent implantation is an effective treatment for obstructive *** stent drainage is more physiologic and associated with a better quality of life than external stent drainage methods such as percutaneous transhepatic gallbladder drainage or percutaneous transhepatic *** metallic stents,which may be covered and uncovered,are commonly ***,some uncertainties remain regarding the selection of metallic stents,including drainage patency time,clinical effect,stent migration,and post-operative complications such as pancreatitis,bleeding,and *** review aims to summarize the current progress and controversies surrounding the use of covered or uncovered metallic stents in inoperable common biliary obstruction via ERCP.

关键词： malignant distal biliary obstruction ERCP metallic stents USEMS CSEMS

Study of Laser Ocular Effect and Damage

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美国中华健康卫生杂志 2005年第3期8卷 66-68页

作者： LIU haifeng luo Zhenkun ZHANG Jian Institute of Radiation Medicine Academy of Military Medical Sciences Beijing China

Hepatoid adenocarcinoma in stomach:a case report

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The Chinese-German Journal of Clinical Oncology 2011年第5期10卷 297-299页

作者： haifeng luo Hongjiang Wang Guang Tan Zhongyu Wang Department of General Surgery The First Affiliated Hospital of Dalian Medical University Dalian 116011 China

Objective:We reported a case with AFP produced gastric hepatoid ***:A male patient,77 year-old,was admitted to our hospital due to an unreasonable elevation of serum *** tumors were revealed by PET-CT,but until the tumors were removed during the surgery,we did not recognize the primary lesion was the gastric ***:Radical distal gastrectomy was *** gastric lesion was confirmed by histology as a hepatic adenocarcinoma in its early ***:The rare etiology of the AFP elevation should be kept in mind in clinic,extrahepatic lesions should be excluded.

关键词： hepatic adenocarcinoma stomach diagnosis treatment

Boosting Oxygen Evolution Reaction Performance on NiFe‑Based Catalysts Through d‑Orbital Hybridization

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Nano-Micro Letters 2025年第1期17卷 281-292页

作者： Xing Wang Wei Pi Sheng Hu haifeng Bao Na Yao Wei luo State Key Laboratory of New Textile Materials and Advanced Processing Technology Key Laboratory of New Textile Materials and Applications of Hubei ProvinceSchool of Materials Science and EngineeringWuhan Textile UniversityWuhan 430200People’s Republic of China College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072People’s Republic of China

Anion-exchange membrane water electrolyzers(AEMWEs)for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based *** introducing a third metal into NiFe-based catalysts to construct asymmetrical M-NiFe units,the d-orbital and electronic structures can be adjusted,which is an important strategy to achieve sufficient oxygen evolution reaction(OER)performance in ***,the ternary NiFeM(M:La,Mo)catalysts featured with distinct M-NiFe units and varying d-orbitals are reported in this *** and theoretical calculation results reveal that the doping of La leads to optimized hybridization between d orbital in NiFeM and 2p in oxygen,resulting in enhanced adsorption strength of oxygen intermediates,and reduced rate-determining step energy barrier,which is responsible for the enhanced OER *** critically,the obtained NiFeLa catalyst only requires 1.58 V to reach 1 A cm^(−2) in an anion exchange membrane electrolyzer and demonstrates excellent long-term stability of up to 600 h.

关键词： NiFe-based catalysts d-orbital coupling Oxygen evolution reaction Anion exchange membrane electrolyzer

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一种欠驱动双板分离式采摘器的研制

北京林业大学学报 2018年第12期40卷 110-116页

作者：罗海风谭月胜北京林业大学工学院林业装备与自动化国家林业局重点实验室北京100083

【目的】采摘是林果种植中的劳动密集型作业,果园中的果实采收环境较为复杂,我国采摘机具的行业研究相对薄弱,采摘机器人等高科技装备在当前果园采摘中的实际应用还具有一定的局限性,因此发展辅助人工摘果装备具有切实的社会和经济意义... 详细信息

【目的】采摘是林果种植中的劳动密集型作业,果园中的果实采收环境较为复杂,我国采摘机具的行业研究相对薄弱,采摘机器人等高科技装备在当前果园采摘中的实际应用还具有一定的局限性,因此发展辅助人工摘果装备具有切实的社会和经济意义。【方法】针对球形带梗果实,以苹果为例提出了果梗锁定—枝果分离的采摘方法,并设计完成了相应采摘器。采摘器整体结构为欠驱动布局,以曲柄摇杆机构为原型设计了果梗锁定机构,构造了固定板、浮动板结构的双板枝果分离机构,利用摇杆滑块机构作为手持驱动单元,利用钢丝和绕线丝轮的传动方法将滑块的输出运动首先传递到曲柄摇杆机构,驱动结构和尺寸对称的两套果梗锁定机构对果梗进行锁定,果梗锁定后继续驱动浮动板向下移动与固定板分离完成摘果。【结果】分析了驱动单元和果梗锁定机构的几何参数,驱动单元的手柄转动5. 5°即可使摘果器完成87°的果梗锁定和50 mm的双板分离动作,果梗锁定机构在锁定果梗时处于反向死点位置,保证了锁定的可靠性。应用Adams软件仿真了采摘器的果梗锁定和双板分离动作,验证了采摘器欠驱动结构的设计可行性,并对输出曲线在锁定果梗过程中的振动情况进行了解释;对采摘过程中的驱动力进行了仿真。采摘器样机实验顺利完成了锁定果梗—枝果分离的顺序采摘动作。【结论】枝果分离的采摘方法和欠驱动双板分离式采摘器在实际应用中具有可操作性,可用于发展人工辅助采摘机具。

关键词：果梗锁定死点枝果分离欠驱动

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人工智能时代的教育评价改革

中国考试 2024年第3期 8-17,97页

作者：罗海风罗杨刘坚清华大学北京100084 北京大学北京100871 北京师范大学北京100875

随着人工智能技术的飞速发展,教育评价改革面临着前所未有的机遇与挑战。本文从认知心理模型视角出发,深入探讨人工智能技术在教育评价中的应用渊源、价值及其所带来的创新性变革。传统教育评价方法已不足以应对当前教育的复杂需求,人... 详细信息

随着人工智能技术的飞速发展,教育评价改革面临着前所未有的机遇与挑战。本文从认知心理模型视角出发,深入探讨人工智能技术在教育评价中的应用渊源、价值及其所带来的创新性变革。传统教育评价方法已不足以应对当前教育的复杂需求,人工智能技术提供了更为科学、客观和专业化的途径。同时,学生和教师的能力结构转型已成为教育评价改革的重要方向,大数据、自适应学习、深度学习与智能分析等技术在教育评价中发挥着关键作用。此外,多元化、个性化、大数据驱动、过程导向和聚焦高阶思维能力已成为教育评价的重要发展趋势。人工智能带来的变革不仅提高了教育评价的效率和精确度,也为教育评价体系的现代化开辟了新路径。

关键词：人工智能教育评价认知心理模型能力结构

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双平行多杆栽植机构运动学分析与试验

农业工程学报 2014年第17期30卷 25-33页

作者：肖名涛孙松林罗海峰吴畏罗江河湖南农业大学工学院长沙410128 湖南省现代农业机械装备工程技术研究中心长沙410128

为提高幼苗移栽质量,设计了1套双平行多杆栽植机构。为了分析和优化该机构的结构参数,建立了该机构的数学模型和运动学方程,并基于Matlab-gui编写了人机交互式程序界面。结合移栽农艺要求,建立了栽植机构运动轨迹与幼苗移栽直立度合格... 详细信息

为提高幼苗移栽质量,设计了1套双平行多杆栽植机构。为了分析和优化该机构的结构参数,建立了该机构的数学模型和运动学方程,并基于Matlab-gui编写了人机交互式程序界面。结合移栽农艺要求,建立了栽植机构运动轨迹与幼苗移栽直立度合格率的关系模型。根据仿真结果,优选了1组机构杆件长度、安装位置和初始角度等参数,并根据该参数设计和制造了幼苗移栽机样机。样机路面静轨迹和动轨迹的高速摄像试验表明,样机实际运动规律符合仿真设计要求,证明了机构设计、数学模型、软件程序和关系模型准确无误;田间试验时接苗准确率和直立度合格率均达100%,试验结果表明双平行多杆栽植机构符合幼苗作物移栽要求,同时也证明了Matlab-gui的人机交互优化方法在多杆式移栽机构分析中准确可行。该研究形成的多杆式移栽机构的运动规律对提高机械化作物幼苗移栽质量具有一定的指导意义。

关键词：农业机械移栽机构四边形幼苗模型人机交互优选