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Reliability of Passive Physical Activity Assessment for Inpatients Using Marker⁃Free Motion Tracking System 认领 引用
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作者 Biao Yang Kewei Duan Wanxia Yao 《Journal of Harbin Institute of Technology(New Series)》 CAS 2021年第2期21-27,共7页
Evidence⁃based practices of public health will benefit from quantification of passive physical activity assessment.This study aims to investigate the reliability of marker⁃free system(MFS)such as Microsoft Kinect in m... Evidence⁃based practices of public health will benefit from quantification of passive physical activity assessment.This study aims to investigate the reliability of marker⁃free system(MFS)such as Microsoft Kinect in measuring upper extremity motion from different angles.Ten healthy participants performed elbow and shoulder extension/flexion along frontal and median anatomical planes for ten pace⁃controlled repetitions,during which the spatiotemporal positions of upper extremity joints were concurrently recorded by two sensors from 0°and 45°viewing angles.Reliability between the two sensors were evaluated using Pearson correlation coefficient,intra⁃class correlation coefficients,and 95%limits of agreement and coefficient of variation.Worse reliability was observed when possibility of occlusion was higher.However,better reliability was found when longer observation interval(10 s)was used as elementary measuring unit than shorter observation interval(2 s).The overall angular reliability of activity as displacement or changes in angle was not satisfactory.The results are expected to inform the industry for the extension of MFS to clinic applications. 展开更多
关键词 physical activity passive assessment marker⁃free motion tracking system intra⁃class correlation coefficients limits of agreement
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Spatial-temporal correlation between surface distress and internal damage in pavement structure 认领 引用
2
作者 Yuhui Zhang Peiguo Yuan +5 位作者 Zhongping Wang Zepeng Fan Haotian Lyu Fujiao Tang Binglei Xie Dawei Wang 《Journal of Road Engineering》 EI CAS 2026年第2期232-244,共13页
A recurrent phenomenon is the reappearance of distress conditions on the same road section,both before and after maintenance interventions.The maintenance work essentially addresses the superficial symptoms rather tha... A recurrent phenomenon is the reappearance of distress conditions on the same road section,both before and after maintenance interventions.The maintenance work essentially addresses the superficial symptoms rather than the root causes,since the internal relationships between various forms of distress remain unclear.This study quantitatively evaluates the correlation between surface distress and internal defects based on field detection data and statistical methods,effectively complementing existing qualitative analytical method.Approximately 200 defect locations data were collected from the RIOHTrack full-scale ring road,and targeted evaluation metrics reflecting pavement performance were proposed.Then,the Ripley's K-function was employed to analyze the spatial aggregation of surface and internal cracks,and to further verify their macroscopic correlation during the spatio-temporal evolution process.Next,kernel density estimation and relative risk assessment were used to investigate the relationships between the surface distress and internal defects.Experimental results reveal that the loading position significantly affects surface distress,but exhibits no obvious correlation with hidden damage,and there is also no spatial aggregation phenomenon between them.However,for semi-rigid base asphalt pavement,internal cracks and surface cracks show a strong correlation,while demonstrating only a weak association with loading position.Finally,a sensitivity analysis was performed based on the results obtained at different distance thresholds,and r=0.5 m was designated as the optimal spatial correlation distance threshold.This threshold was then used to determine the pavement structure offering the best crack resistance performance,providing a key reference for the design and maintenance of heavy-duty highway pavements.This study provides a reference for road active maintenance and supports the transformation of maintenance strategies from passive response to active intervention. 展开更多
关键词 Pavement structure RIOHTrack Ripley's K-function Kernel density estimation Surface distress Internal defects
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Optimizing the traffic microcirculation in old neighborhood based on the bi-level multi-objective model 认领 引用
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作者 Yuanyuan Guo Xinyue Ye +1 位作者 Ke Huang Xinyi Liu 《Digital Transportation and Safety》 2025年第4期227-241,共15页
Urban traffic congestion has become increasingly severe,along with the rapid progress of urbanization and motorization worldwide,particularly in the areas with old neighborhoods.These areas often face issues such as t... Urban traffic congestion has become increasingly severe,along with the rapid progress of urbanization and motorization worldwide,particularly in the areas with old neighborhoods.These areas often face issues such as the slow speed of vehicles and difficulties in parking due to the incomplete traffic microcirculation system.This paper focuses on optimizing traffic microcirculation in the areas of old neighborhoods through scenario simulations.The bi-level optimization model for the traffic microcirculation system,which considers intersection delays,was developed and solved by using a genetic algorithm to devise an optimal road network strategy.By taking the case of Zhuangwangfu,an old neighborhood of Tianjin,China,we validated the optimization model.The results indicate that measures such as converting some two-way streets to one-way,widening roads,and increasing the number of minor roads can effectively reduce the saturation of main roads.These efforts can also improve the utilization of minor roads,balance traffic volumes between main and minor roads,and significantly alleviate traffic congestion in old neighborhoods.These results can also provide valuable insights for alleviating traffic congestion through traffic microcirculation,thus improving the urban environment. 展开更多
关键词 Traffic microcirculation Old neighborhoods Bi-level optimization model Traffic congestion Urban renewal
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Planning Strategy for Urban Fringe Villages Based on Village Development Potential Evaluation: A Case Study of the Shenshan Special Cooperation Zone 认领 引用
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作者 Yuan Lin Jiang Juntao +2 位作者 Wang Mohan Han Jiwen Ma Hang 《China City Planning Review》 CSCD 2025年第1期64-74,共11页
Urban fringe areas are faced with remarkable contradictions between land supply and demand due to a lack of scientific planning.Rural hollowing is accompanied by a shortage of urban land,resulting in a loss of both la... Urban fringe areas are faced with remarkable contradictions between land supply and demand due to a lack of scientific planning.Rural hollowing is accompanied by a shortage of urban land,resulting in a loss of both land and employment for farmers as well as a destruction to the distinctive features of urban fringe villages.Therefore,it is necessary to explore a set of planning methods for urban fringe villages to satisfy the needs of urban and rural development.Firstly,this paper carries out a literature review on the evaluation of village development potential and the main factors affecting the development of urban fringe villages.Based on previous studies,the paper establishes a development potential evaluation system for urban fringe villages,employing the Analytic Hierarchy Process(AHP)method.In the end,taking the Shenshan Special Cooperation Zone as an example,the paper presents the types of village development and the corresponding planning strategies based on the results of village development potential evaluation. 展开更多
关键词 village development potential urban fringe village Shenshan Special Cooperation Zone
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A Comparative Study on the Measurement Methods of Urban Mixed Land Use 认领 引用 被引量：1
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作者 Zhao Guangying Song Jusheng +2 位作者 Liu Shujuan Qian Fang Tang Yan 《China City Planning Review》 CSCD 2022年第3期58-71,共14页
The study aims at exploring the applicability and limitations of domestic and foreign methods for measuring the function mixing of urban land use,and sorting out various classic measurement methods according to the lo... The study aims at exploring the applicability and limitations of domestic and foreign methods for measuring the function mixing of urban land use,and sorting out various classic measurement methods according to the logic of “conceptual reflection–characteristics comparison–limitation analysis.” The study shows that:① the connotation and types of mixed land use functions are still controversial at home and abroad;② there is a lack of research on measurement methods in China;③ for medium and micro-scale planning,current measurement methods cannot fully reflect the differences in the degree of mixing caused by the planar and three-dimensional layout of building functions within the grid;④ the measurement methods for refined planning governance should improve the measurement model in terms of the number of functional types and the mixed layout of various functions in the horizontal and vertical directions at the medium and micro-scales,and improve its accuracy of the measurement results of a single grid and the whole area. 展开更多
关键词 urban planning function mixing of land use measurement model limitation improvement
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Theoretical Model on Factors Influencing Street Physical Activity from a Social Ecological Perspective 认领 引用 被引量：4
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作者 Dai Donghui Sun Yu +1 位作者 Wang Yaowu Li Min 《China City Planning Review》 CSCD 2020年第2期76-85,共10页
Insufficient physical activity has become a significant issue of global health.To optimize the environment of streets,an important kind of public space in cities,is an effective way to push residents to engage in dail... Insufficient physical activity has become a significant issue of global health.To optimize the environment of streets,an important kind of public space in cities,is an effective way to push residents to engage in daily physical activities.Due to the complexity of behaviors,identifying the relevant influencing factors and their relationship,as well as building a comprehensive research framework are key to making environmental development strategies.Therefore,from a social ecological perspective,this paper analyzes the basic logic of these influencing factors at various levels and summarizes their specific content.According to the rational interpretation on behavioral decision-making based on the theory of health behavior,the paper builds a multi-dimensional model on factors influencing physical activity from theoretical and cognitive perspectives.By exploring the model’s structural relationship,it concludes that strategies considering street physical factors are conductive to physical activity interventions from multiple dimensions.As theoretical deduction needs to be continuously verified and optimized in empirical studies,it proposes suggestions for the next stage of research on data support of quantitative analysis. 展开更多
关键词 street physical activity social ecological model theory of health behavior influencing factors
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社会生态视角下街道步行影响因素的作用机理——基于深圳的实证分析 认领 引用 被引量：1
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作者 孙宇 戴冬晖 +2 位作者 王耀武 Liu Jinxin Liu Jiayan 《China City Planning Review》 CSCD 2023年第3期48-63,共16页
The health significance of walking has become increasingly prominent.To better understand how factors influence behavior is a necessary basis for effective behavioral intervention.In view of the complexity of human be... The health significance of walking has become increasingly prominent.To better understand how factors influence behavior is a necessary basis for effective behavioral intervention.In view of the complexity of human behavior,this paper explores the influencing factors of pedestrian walking and their influencing mechanism under different behavioral purposes from the socio-ecological perspective,based on the empirical data of Shenzhen.The analysis reveals that:factors in each dimension interact to have a joint influence on walking activities,among which the influences of behavioral habit,physical environment,and policy environment are more prominent;the differentiation of influencing factors under different behavioral purposes is relatively obvious in physical environment dimension;the comprehensive performance of factors is more prominent in physical environment dimension,which is effective,especially under the intervention of policy environment factors;behavioral intervention practices should be integrated with the respective characteristics of behavior psychology,social environment,physical environment,and policy environment,so as to maximize the intervention effects. 展开更多
关键词 the socio-ecological model pedestrian walking influencing factors behavioral intervention Shenzhen
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Hwangryongsa reconsidered:A Korean mirror to the medieval Chinese Buddhist ritual-architectural transformation 认领 引用 被引量：1
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作者 Zhu Xu 《Frontiers of Architectural Research》 CSCD 2023年第1期28-41,共14页
This article investigates the one-century construction history of Silla’s state monastery Hwangryongsa,understanding its architectural transformation in relation to the changing ritual-spatial concept within the cont... This article investigates the one-century construction history of Silla’s state monastery Hwangryongsa,understanding its architectural transformation in relation to the changing ritual-spatial concept within the context of the medieval Sino-Korean cultural exchanges.The initial construction between 553 and 569,supervised by the Koguryŏe´migre´monk Hyeryang,followed the sixth-century Northern Chinese model to build Hwangryongsa as a dormitory-enclosed compound,in which the One-Hundred-Seat Assembly was enacted in the image hall as the earlier Chinese Buddhist tradition would do.This plan was soon altered under the increasing popularity of the newly developed Southern Chinese paradigm.An extensive reconstruction started in 574 for the purpose of imitating the Chen imperial performance of the One-Hundred-Seat Assembly at Taijidian compound of Jiankang palace,while the archaic,oddly-empty organization of the central image hall reveals a hidden connection between Hwangryongsa and Tongtaisi,the state monastery of the Liang and also the first Chinese monastery modeled after the Taijidian compound.Hwangryongsa was eventually transformed into a corridor-enclosed ceremonial courtyard fronted by three image halls and one nine-story pagoda by 645,and the transformation profoundly mirrored China’s medieval architectural reform of Buddhist ritual space between the sixth and seventh centuries. 展开更多
关键词 Hwangryongsa Taijidian Tongtaisi Sino-Korean exchange Silla Chinese Northern and Southern dynasties
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