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《医学前沿(英文)》 2012年 第6卷 第4期 页码 428-435 doi: 10.1007/s11684-012-0232-4
The increasing prevalence of childhood overweight and obesity has been associated with an increased risk for cardiovascular disease (CVD). While several studies examined the effect of single behaviors such as physical activity (PA), sedentary behavior or diet on CVD risk, there is a lack of research on combined associations, specifically in children. Therefore, the purpose of this study was to examine the joint association of PA or screen time (ST) and diet on CVD risk factors in children. PA, ST and diet were assessed via questionnaire in 210 fifth grade students (age: 10.6±0.4 years). The healthy eating index (HEI) was subsequently calculated as indicator for diet quality. Height, weight, % body fat, and resting blood pressure were measured according to standard procedures and blood samples obtained via fingerprick were assayed for blood lipids. Total cholesterol HDL ratio (TC:HDL), mean arterial pressure (MAP), and % body fat were used as indicators of CVD risk. 55% of children did not meet current PA recommendations on at least 5 days/week and 70% exceeded current recommendations for ST. Further, only 2.5% possessed a “good” diet (HEI>80). There was no significant association of PA or ST and diet on CVD risk score. Neither TC:HDL, MAP, and % body fat nor the total CVD risk score was significantly correlated with diet, PA, or ST. Children in the high PA group, however, had significantly better diet scores. Despite the fact that self-reported PA, ST, or dietary intake were not directly related to CVD risk in this sample, higher activity levels were associated with a healthier diet and lower ST indicating an overall healthier lifestyle of this subgroup.
关键词: exercise sedentary behavior metabolic syndrome health behavior adolescents TV time healthy eating index
Wind-induced vibration control of Hefei TV tower with fluid viscous damper
Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,
《结构与土木工程前沿(英文)》 2009年 第3卷 第3期 页码 249-254 doi: 10.1007/s11709-009-0038-x
关键词: high-rise structure wind-induced response fluid viscous damper vibration control
江欢成
《中国工程科学》 1999年 第1卷 第1期 页码 30-35
东方明珠,塔高463.85m,高居亚洲之二,世界第三,被公认为是上海最重要的城市标志。雅加达塔,高558m,建筑面积32万m2,均堪称世界之最。东方明珠的成功,雅加达塔的中标,在很大程度上要归功于设计创新。东方明珠设计者用一串明珠来标志上海,用带斜撑的巨型空间框架作为主体结构,打破了混凝土电视塔常用的单筒体结构模式,从而获得了很好的标志性。这种结构同时很有利于抗风抗震。该塔还采用了许多高新技术,如预应力混凝土壳、双重悬挂钢结构和攀升天线等设计,它们巧妙而合理地解决了复杂的结构构造和高难度施工的问题。设计者在雅加达塔上,继承和发扬东方明珠的长处,克服它的不足,并赋予许多新的创造。为了使新的创造建立在坚实科学基础上,设计者为东方明珠塔进行了大量的试验研究工作。
结合全变分最小化和稀疏字典学习后处理的低剂量CT重建 Article
Yong DING, Tuo HU
《信息与电子工程前沿(英文)》 2017年 第18卷 第12期 页码 2001-2008 doi: 10.1631/FITEE.1700287
Fleet deployment with time-chartered and voyage-chartered tankers for a refined oil shipping company
《工程管理前沿(英文)》 doi: 10.1007/s42524-024-4051-5
关键词: fleet deployment refined oil shipping time-chartered voyage-chartered tabu search
General expression for linear and nonlinear time series models
Ren HUANG, Feiyun XU, Ruwen CHEN
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 15-24 doi: 10.1007/s11465-009-0015-z
关键词: linear and nonlinear autoregressive model system identification time series analysis
Analyzing construction safety through time series methods
Houchen CAO, Yang Miang GOH
《工程管理前沿(英文)》 2019年 第6卷 第2期 页码 262-274 doi: 10.1007/s42524-019-0015-6
关键词: time series temporal construction safety leading indicators accident prevention forecasting
Two-stage scheduling on batch and single machines with limited waiting time constraint
Zhongshun SHI, Zewen HUANG, Leyuan SHI
《工程管理前沿(英文)》 2017年 第4卷 第3期 页码 368-374 doi: 10.15302/J-FEM-2017034
Convergence to real-time decision making
James M. TIEN
《工程管理前沿(英文)》 2020年 第7卷 第2期 页码 204-222 doi: 10.1007/s42524-019-0040-5
关键词: real-time decision making services goods ServGoods Big Data Internet of Things artificial intelligence wireless communications
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 851-866 doi: 10.1007/s11709-021-0739-3
关键词: damage identification beam-to-column connection time-domain response optimization
Run-time system based on LinSERCANS and Soft-PLC
Cunfeng KANG, Chong WANG, Chunmin MA, Xudong HUANG, Renyuan FEI
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 120-124 doi: 10.1007/s11465-009-0019-8
关键词: Soft-PLC run-time system LinSERCANS dynamic link libraries
A super-element approach for structural identification in time domain
LI Jie, ZHAO Xin
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 215-221 doi: 10.1007/s11465-006-0004-4
关键词: numerical effective decomposing parameterization procedure divide-and-conquer ability time-domain identification
Lynda M. BOURNE, Patrick WEAVER
《工程管理前沿(英文)》 2018年 第5卷 第2期 页码 150-166 doi: 10.15302/J-FEM-2018012
关键词: time management scheduling CPM PERT Gantt Critical Path bar chart
Sustainability of steel structures: towards an integrated approach to life-time engineering design
Raffaele LANDOLFO, Lucrezia CASCINI, Francesco PORTIOLI
《结构与土木工程前沿(英文)》 2011年 第5卷 第3期 页码 304-314 doi: 10.1007/s01709-011-0123-9
关键词: sustainability life-time engineering performance based design durability metal structures
Real-time prediction of tunnel face conditions using XGBoost Random Forest algorithm
《结构与土木工程前沿(英文)》 2023年 第17卷 第12期 页码 1777-1795 doi: 10.1007/s11709-023-0044-4
关键词: Tunnel Boring Machine fractured and weak rock mass machine learning model real-time early warming tunnel face rock condition
标题 作者 时间 类型 操作
Joint association of physical activity/screen time and diet on CVD risk factors in 10-year-old children
null
期刊论文
Wind-induced vibration control of Hefei TV tower with fluid viscous damper
Zhiqiang ZHANG , Aiqun LI , Jianping HE , Jianlei WANG ,
期刊论文
Fleet deployment with time-chartered and voyage-chartered tankers for a refined oil shipping company
期刊论文
General expression for linear and nonlinear time series models
Ren HUANG, Feiyun XU, Ruwen CHEN
期刊论文
Two-stage scheduling on batch and single machines with limited waiting time constraint
Zhongshun SHI, Zewen HUANG, Leyuan SHI
期刊论文
Damage identification in connections of moment frames using time domain responses and an optimization
期刊论文
Run-time system based on LinSERCANS and Soft-PLC
Cunfeng KANG, Chong WANG, Chunmin MA, Xudong HUANG, Renyuan FEI
期刊论文
origins of schedule management: the concepts used in planning, allocating, visualizing and managing time
Lynda M. BOURNE, Patrick WEAVER
期刊论文
Sustainability of steel structures: towards an integrated approach to life-time engineering design
Raffaele LANDOLFO, Lucrezia CASCINI, Francesco PORTIOLI
期刊论文