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Interpretation of appropriate places: State ceremonies and the imperial main halls of the Tang and Song dynasties

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Frontiers of Architectural Research 2022年第6期11卷 1007-1029页

作者： Mian Guo Yang Shen School of Archaeology and Museology Peking UniversityBeijing 100871China School of Architecture Southeast UniversityNanjing 210096China Member of Key Scientific Research Base of Traditional Wooden Architecture(Southeast University) State Administration for Cultural HeritageNanjing 210096China

This paper aims to inquiry on the dialectical relationships between Chinese architecture’s form and function in the horizon of long-term historical evolution,by clarifying how the histories of imperial main halls and state ceremonies relate to and interact with each other during the Tang and Song dynasties.The imperialmain halls are themost archetypical and accomplished ones among traditional Chinese buildings,and their function is primarily ritual rather than practical.Although these magnificent buildings are indisputably considered the crowning achievement of Chinese architectural history,how the built space cooperates with ritual practices did not receive deserved attention.With the thorough reading of voluminous official ritual documents and comprehensive utilization of archaeological discoveries together with visual materials,the research presents a broad understanding of the asynchronous developments of the ground-level architectural arrangement and the ritual configuration across these centuries.Also specifically depicted are details of how architecture engaged in the ritual narration and was used as an apparatus to articulate emperor-courtier relationships.

关键词： Ritual function Architecture and ritual Chinese architecture Architectural meaning Form and function

Reduced Model of Droop-controlled Converters for Transient Simulation Analysis

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Chinese Journal of Electrical Engineering 2022年第3期8卷 112-122页

作者： Yingjie Tan Yang Shen Min Xu Chao shen Jinyong Lei Electric Power Research Institute CSGGuangzhou 510663China College of Electrical and Information Engineering Hunan UniversityChangsha 410082China

In recent years,the transient stability problems encountered by power grids have increasingly attracted interest due to the connection of renewable energy resources.One of the effective methods for studying the transient characteristics of a system is transient simulation analysis.To reduce the simulation time,especially in a system with numerous renewable energy resources,model reduction has been widely employed.However,when a general reduced model is adopted to analyze different transient characteristics,a tradeoff between accuracy and simulation speed emerges.In this study,reduced model selection is implemented to resolve this problem.Considering the droop-controlled converter as an example,this approach allows the transient simulation analysis of voltage,frequency,and power angle characteristics.First,a full-order model of the droop-controlled inverter is formulated.Thereafter,the singular perturbation method is applied to derive different reduced-order models.Then,considering accuracy and simulation speed simultaneously,the most suitable reduced models for transient angle,voltage,and frequency simulation analyses are determined through time-domain simulation comparison.Finally,the simulation results based on Matlab/Simulink are used to verify the correctness of the reduced model selection.

关键词： Droop-controlled inverter transient analysis reduced-order model singular perturbation

High thermal conductivity dielectric polymers show record high capacitive performance at high temperatures

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National Science Review 2023年第11期10卷 85-86页

作者： Yang Shen Ce-Wen Nan Tsinghua University State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering

Electrostatic capacitors are the most widely used components in modern electrical and electronic systems ranging from integrated circuits, electrical energy storage and pulsed power facilities.Polymers are the preferred dielectrics for electrostatic capacitors owing to their unique self-healing ability, high breakdown strength and ease of processing[1,2]. However, as the operating temperature increases, dielectric polymers exhibit substantially increased conduction loss,

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基于三阶段数据包络分析模型的中部国家级高新区创新效率评价

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科技广场 2023年第1期 22-34页

作者：杨图南沈志刚杨青生广东财经大学经济学院江西科技师范大学经济管理学院广东财经大学文化旅游与地理学院广东广州510320

本文运用三阶段DEA模型对2018年我国中部42个国家级高新区的创新效率进行评价,实证结果显示:剔除环境因素和外部干扰后,中部高新区综合效率总体上有提升,规模效率总体上有所下降,纯技术效率大幅度且普遍得到提升,规模效率不高成为制约... 详细信息

本文运用三阶段DEA模型对2018年我国中部42个国家级高新区的创新效率进行评价,实证结果显示:剔除环境因素和外部干扰后,中部高新区综合效率总体上有提升,规模效率总体上有所下降,纯技术效率大幅度且普遍得到提升,规模效率不高成为制约中部高新区综合创新效率提升的关键因素,且大部分高新区都处于规模效益递增的状态。同时,环境因素中的地区经济发展水平和产业结构因素不利于中部高新区创新效率的提升;而市场开放程度、政策支持和基础设施环境等因素都对创新效率具有促进作用,成为提升中部高新区创新效率的有效选择。

关键词：中部高新区创新效率三阶段DEA 环境变量

3D fracture modelling and limit state analysis of prestressed composite concrete pipes

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Frontiers of Structural and Civil Engineering 2019年第1期13卷 165-175页

作者： Pengfei HE Yang Shen Yun GU Pangyong shen School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghai 200092China Shanghai SMI Engineering Project Management Co. Ltd.Shanghai 201103China

In this manuscript,we study fracture of prestressed cylindrical concrete pipes.Such concrete pipes play a major role in tunneling and underground engineering.The structure is modelled fully in 3D using three-dimensional continuum elements for the concrete structure which beam elements are employed to model the reinforcement.This allows the method to capture important phenomena compared to a pure shell model of concrete.A continuous approach to fracture is chosen when concrete is subjected to compressive loading while a combined continuous-discrete fracture method is employed in tension.The model is validated through comparisons with experimental data.

关键词： cylindrical concrete structures limit state analysis 3D fracture modelling prestressed composite pipes reinforced concrete three-point bending test

Asymmetric Aminations and Kinetic Resolution of Acyclic α-Branched Ynones

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Chinese Journal of Chemistry 2022年第1期40卷 15-20页

作者： Faqian He Guosong shen Xiaoyu yang School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China University of Chinese Academy of Sciences Beijing 100049China Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China

An efficient method for asymmetric synthesis of acyclic α-tertiary amine derivatives has been achieved through enantioselective aminations of α-branched ynones with azodicarboxylates enabled by chiral phosphoric acid catalysis.Moreover,kinetic resolution of racemic starting material was realized under these conditions,which gave access to valuable enantioenriched α-substituted ketones.

关键词： Asymmetric catalysis Amination Kinetic resolution Chiral phosphoric acids α-Branched ynones

A scoping review of methodologies for applying artificial intelligence to physical activity interventions

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Journal of Sport and Health Science 2024年第3期13卷 428-441页

作者： Ruopeng An Jing shen Junjie Wang Yuyi yang Brown School Washington UniversitySt.LouisMO 63130USA Department of Physical Education China University of Geosciences BeijingBeijing 100083China School of Kinesiology and Health Promotion Dalian University of TechnologyDalian 116024China Division of Computational and Data Sciences Washington UniversitySt.LouisMO 63130USA

Purpose This scoping review aimed to offer researchers and practitioners an understanding of artificial intelligence(AI)applications in physical activity(PA)interventions;introduce them to prevalent machine learning(ML),deep learning(DL),and reinforcement learning(RL)algorithms;and encourage the adoption of AI methodologies.Methods A scoping review was performed in PubMed,Web of Science,Cochrane Library,and EBSCO focusing on AI applications for promoting PA or predicting related behavioral or health outcomes.AI methodologies were summarized and categorized to identify synergies,patterns,and trends informing future research.Additionally,a concise primer on predominant AI methodologies within the realm of PA was provided to bolster understanding and broader application.Results The review included 24 studies that met the predetermined eligibility criteria.AI models were found effective in detecting significant patterns of PA behavior and associations between specific factors and intervention outcomes.Most studies comparing AI models to traditional statistical approaches reported higher prediction accuracy for AI models on test data.Comparisons of different AI models yielded mixed results,likely due to model performance being highly dependent on the dataset and task.An increasing trend of adopting state-of-the-art DL and RL models over standard ML was observed,addressing complex human–machine communication,behavior modification,and decision-making tasks.Six key areas for future AI adoption in PA interventions emerged:personalized PA interventions,real-time monitoring and adaptation,integration of multimodal data sources,evaluation of intervention effectiveness,expanding access to PA interventions,and predicting and preventing injuries.Conclusion The scoping review highlights the potential of AI methodologies for advancing PA interventions.As the field progresses,staying informed and exploring emerging AI-driven strategies is essential for achieving significant improvements in PA interventions and fostering overall we

关键词： Artificial intelligence Intervention Machine learning Neural network Physical activity

Enhancing the environmental durability and flexibility of polymer electronics through nanostructured molecular-level protection tethered to surfaces

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中国科学:材料科学(英文版) 2023年第8期66卷 3375-3376页

作者： yang Li Guozhen shen School of Microelectronics Shandong UniversityJinan 250101China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China

Flexible,biocompatible,and stretchable epidermal electronic devices possess remarkable capability to seamlessly interface with bionic biological systems and maintain reliable operation even during continuous body movements[1,2].Consequently,they hold immense promise for advanced wearable and implantable applications,encompassing real-time health monitoring,robotic intelligent sensing,and metaverse technologies.

关键词： durability maintain interface

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics

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Nano-Micro Letters 2022年第9期14卷 187-220页

作者： Yuyao Lu Geng yang Yajing shen Huayong yang Kaichen Xu State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Department of Biomedical Engineering City University of Hong KongHong KongPeople’s Republic of China

In the past decade,the global industry and research attentions on intelligent skin-like electronics have boosted their applications in diverse fields including human healthcare,Internet of Things,human–machine interfaces,artificial intelligence and soft robotics.Among them,flexible humidity sensors play a vital role in noncontact measurements relying on the unique property of rapid response to humidity change.This work presents an overview of recent advances in flexible humidity sensors using various active functional materials for contactless monitoring.Four categories of humidity sensors are highlighted based on resistive,capacitive,impedance-type and voltage-type working mechanisms.Furthermore,typical strategies including chemical doping,structural design and Joule heating are introduced to enhance the performance of humidity sensors.Drawing on the noncontact perception capability,human/plant healthcare management,human-machine interactions as well as integrated humidity sensor-based feedback systems are presented.The burgeoning innovations in this research field will benefit human society,especially during the COVID-19 epidemic,where cross-infection should be averted and contactless sensation is highly desired.

关键词： Flexible electronics Flexible humidity sensors Noncontact detection Healthcare monitoring Human-machine interactions COVID-19 epidemic