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Temporal trend of mortality from major cancers in Xuanwei, China
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《医学前沿(英文)》 2015年 第9卷 第4期 页码 487-495 doi: 10.1007/s11684-015-0413-z
Although a number of studies have examined the etiology of lung cancer in Xuanwei County, China, other types of cancer in this county have not been reported systematically. This study aimed to investigate the temporal trend of eight major cancers in Xuanwei County using data from three mortality surveys (1973–1975, 1990–1992, and 2004–2005). The Chinese population in 1990 was used as a standard population to calculate age-standardized mortality rates. Cancers of lung, liver, breast, brain, esophagus, leukemia, rectum, and stomach were identified as the leading cancers in this county in terms of mortality rate. During the three time periods, lung cancer remained as the most common type of cancer. The mortality rates for all other types of cancer were lower than those of the national average, but an increasing trend was observed for all the cancers, particularly from 1990–1992 to 2004–2005. The temporal trend could be partly explained by changes in risk factors, but it also may be due to the improvement in cancer diagnosis and screening. Further epidemiological studies are warranted to systematically examine the underlying reasons for the temporal trend of the major cancers in Xuanwei County.
Huilong LIN, Ruichao LI, Yifan LIU, Jingrong ZHANG, Jizhou REN
《农业科学与工程前沿(英文)》 2017年 第4卷 第1期 页码 69-80 doi: 10.15302/J-FASE-2017140
关键词: arable land equivalent unit (ALEU) food equivalent unit (FEU) food security grassland agriculture time trend prediction
Zaobao LIU; Yongchen WANG; Long LI; Xingli FANG; Junze WANG
《结构与土木工程前沿(英文)》 2022年 第16卷 第4期 页码 401-413 doi: 10.1007/s11709-022-0823-3
关键词: hard rock tunnel tunnel bore machine advance rate prediction temporal convolutional networks soft computing construction big data
Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong
《环境科学与工程前沿(英文)》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1054-7
The current situation of typical organics in the sediments around Beijing was unclear. 56 kinds of typical toxic organics were detected in this article. Historical data was compared with the data in this study. The change of different organics in the sediments around Beijing was concluded.
关键词: Organic compounds Endocrine disrupters Sediments Concentration Temporal changes
Spatio-temporal variations of water quality in Yuqiao Reservoir Basin, North China
Yuan XU,Ruqin XIE,Yuqiu WANG,Jian SHA
《环境科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 649-664 doi: 10.1007/s11783-014-0702-9
关键词: Fuzzy comprehensive assessment multivariate statistical analysis water quality
Xiaofeng ZHANG,Xu ZHANG,Guanghe LI
《环境科学与工程前沿(英文)》 2015年 第9卷 第2期 页码 269-278 doi: 10.1007/s11783-014-0672-y
关键词: moisture vertical distribution moisture temporal variation texture stratification irrigation meteorological forcing urban landscape
Spatial and Temporal Distribution of PM
Xiao-hong Chen,Xiang-bo Tang
《工程管理前沿(英文)》 2016年 第3卷 第2期 页码 171-181 doi: 10.15302/J-FEM-2016017
关键词: PM2.5 spatial and temporal distribution ArcGIS the chang-Zhu-Tan city cluster
梁桂明
《中国工程科学》 2000年 第2卷 第3期 页码 1-6
最早的齿轮是怎样发明出来的?它源于何方?用于何处?——这是近百年来人们在探索的一个谜。 两千年前,在中国、印度、希腊、罗马、埃及出土和出水的铸铁齿轮与青铜齿轮似乎解开了这个谜。其实不然, 它们只是第2代齿轮。第1代齿轮是木制齿轮。它源于四千年前,各文明古国发明水力机械中伴生。这是由于 这些文明古国聚居大河与海湾,与水有“缘分”所致。第2代齿轮的辉煌点表现在公元前200年中国的发明 ——指南车上。它在世界上第一次发明了差动机构,第一次实现半自动控制机构,第一次出现有走向功能的机 器人。1800年工业革命带来了第3代齿轮,其特征是用直刃刀具成批生产渐开线的钢制齿轮形成了现代齿轮的 技术平台。进人21世纪,以高强度复合材料代替资源匮乏的钢材,标志着新一代(第4代)齿轮的到来,它将 与知识经济共存。未来50年齿轮创新的趋势,是追求小化、净化、静化,高可靠性、高强度、高转速和低材 耗、低能耗、低重量。
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 457-464 doi: 10.15302/J-FASE-2022452
● A simple model was used to evaluate how increasing temporal variability in precipitation influences crop yields and nitrogen losses.
关键词: crop yield fertilizer timing nitrogen loss precipitation variability toy model
Baiwan Zhou, Dongmei An, Fenglai Xiao, Running Niu, Wenbin Li, Wei Li, Xin Tong, Graham J Kemp, Dong Zhou, Qiyong Gong, Du Lei
《医学前沿(英文)》 2020年 第14卷 第5期 页码 630-641 doi: 10.1007/s11684-019-0718-4
关键词: mesial temporal lobe epilepsy functional magnetic resonance imaging structural magnetic resonance imaging machine learning support vector machine
Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG
《环境科学与工程前沿(英文)》 2014年 第8卷 第6期 页码 895-904 doi: 10.1007/s11783-014-0736-z
关键词: Xin'anjiang River multivariable statistical analysis temporal variation spatial variation water quality
Distribution and temporal variability of the solar resource at a site in south-east Norway
Muyiwa S. ADARAMOLA
《能源前沿(英文)》 2016年 第10卷 第4期 页码 375-381 doi: 10.1007/s11708-016-0426-6
关键词: coefficient of variation global solar radiation diffuse ratio albedo PV energy systems
空中交通延误传播动力学的时空网络视角 Article
Qing Cai, Sameer Alam, Vu N. Duong
《工程(英文)》 2021年 第7卷 第4期 页码 452-464 doi: 10.1016/j.eng.2020.05.027
由于日益增长的空中交通需求与有限的空域容量之间的不平衡,空中交通出现了难以解决的延误。由于空中交通与复杂的航空运输系统有关,延误可以在这些系统中被放大和传播,从而导致所谓的延迟传播的紧急行为。对延误传播动力学的理解与现代空中交通管理有着密切的关系。本文提出了一种复杂的网络延迟传播动力学观点。具体来说,我们利用以机场为节点的时空网络对空中交通场景进行建模。为了建立节点间的动态边缘,我们提出了一种时延传播方法,并将其应用于给定的空中交通调度集合。基于所构建的时空网络,提出了三个指标(幅度、严重性和速度)来衡量延迟传播动态。为了验证该方法的有效性,我们对东南亚地区(SAR)和美国的国内航班进行了案例研究。实验表明,美国交通延误传播影响的航班数和传播延迟量的传播幅度分别是SAR的5倍和10倍。实验进一步表明,美国交通的传播速度比SAR快8倍。延迟传播动态显示,SAR约6个枢纽机场存在明显的传播延误,而美国的情况则更为严重,相应数量在16个左右。本工作为跟踪空中交通延误的演变提供了有力的工具。
Chenglong ZHANG,Mo LI,Ping GUO
《农业科学与工程前沿(英文)》 2017年 第4卷 第1期 页码 81-96 doi: 10.15302/J-FASE-2016112
关键词: Monte Carlo nonstationary trend detection streamflow prediction decomposition and ensemble Yingluoxia
Mass concentrations and temporal profiles of PM
Liu YANG,Ye WU,Jiaqi LI,Shaojie SONG,Xuan ZHENG,Jiming HAO
《环境科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 675-684 doi: 10.1007/s11783-014-0731-4
关键词: particulate matter traffic control measure Beijing Olympic Games
标题 作者 时间 类型 操作
Allocation of grassland, livestock and arable based on the spatial and temporal analysis for food demand
Huilong LIN, Ruichao LI, Yifan LIU, Jingrong ZHANG, Jizhou REN
期刊论文
Realtime prediction of hard rock TBM advance rate using temporal convolutional network (TCN) with tunnel
Zaobao LIU; Yongchen WANG; Long LI; Xingli FANG; Junze WANG
期刊论文
The temporal changes of the concentration level of typical toxic organics in the river sediments around
Qiang Li, Xiong Xu, Yaoyao Fang, Ruiyang Xiao, Donghong Wang, Wenjue Zhong
期刊论文
Spatio-temporal variations of water quality in Yuqiao Reservoir Basin, North China
Yuan XU,Ruqin XIE,Yuqiu WANG,Jian SHA
期刊论文
The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificial
Xiaofeng ZHANG,Xu ZHANG,Guanghe LI
期刊论文
CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING
期刊论文
Machine learning for detecting mesial temporal lobe epilepsy by structural and functional neuroimaging
Baiwan Zhou, Dongmei An, Fenglai Xiao, Running Niu, Wenbin Li, Wei Li, Xin Tong, Graham J Kemp, Dong Zhou, Qiyong Gong, Du Lei
期刊论文
Assessment of temporal and spatial variations in water quality using multivariate statistical methods
Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG
期刊论文
Distribution and temporal variability of the solar resource at a site in south-east Norway
Muyiwa S. ADARAMOLA
期刊论文
Trend detection and stochastic simulation prediction of streamflow at Yingluoxia hydrological station
Chenglong ZHANG,Mo LI,Ping GUO
期刊论文