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Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Frontiers of Structural and Civil Engineering   Pages 855-869 doi: 10.1007/s11709-023-0972-z

Abstract: The earthquake excitations were scaled to a target spectrum, and nonlinear time-history analyses were

Keywords： masonry arch bridges     seismic behavior     modal properties     pulse-like records     nonlinear time history    

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Nonlinear dynamics of a wind turbine tower

A. GESUALDO, A. IANNUZZO, F. PENTA, M. MONACO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 342-350 doi: 10.1007/s11465-019-0524-3

Abstract: The recent proliferation of wind turbines has revealed problems in their vulnerability under different site conditions, as evidenced by recent collapses of wind towers after severe actions. Analyses of structures subjected to variable actions can be conducted through several methods with different accuracy levels. Nonlinear dynamics is the most reliable among such methods. This study develops a numerical procedure to obtain approximate solutions for rigid-plastic responses of structures subjected to base harmonic pulses. The procedure’s model is applied to a wind turbine tower subjected to inertial forces generated by harmonic ground acceleration, and failure is assumed to depend on the formation of shear hinges. The proposed approach provides an efficient representation of the post-elastic behavior of the structure, has a low computational cost and high effectiveness, and uses a limited number of mechanical parameters.

Keywords： nonlinear dynamics     plastic shear failure     modal approximation     time history    

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Advanced finite element analysis of a complex deep excavation case history in Shanghai

Yuepeng DONG, Harvey BURD, Guy HOULSBY, Yongmao HOU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 93-100 doi: 10.1007/s11709-014-0232-3

Abstract: The construction of the North Square Shopping Center of the Shanghai South Railway Station is a large scale complex top-down deep excavation project. The excavation is adjacent to several current and newly planned Metro lines, and influenced by a neighboring Exchange Station excavation. The highly irregular geometry of this excavation greatly increases the complexity in 3D Finite Element modeling. The advanced numerical modeling described in this paper includes detailed structural and geotechnical behavior. Important features are considered in the analysis, e.g., 1) the small-strain stiffness of the soil, 2) the construction joints in the diaphragm wall, 3) the shrinkage in the concrete floor slabs and beams, 4) the complex construction sequences, and 5) the shape effect of the deep excavation. The numerical results agree well with the field data, and some valuable conclusions are generated.

Keywords： advanced finite element analysis     deep excavations     case history     small-strain stiffness    

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Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Frontiers of Engineering Management 2021, Volume 8, Issue 1,   Pages 122-134 doi: 10.1007/s42524-019-0072-x

Abstract: under a mainshock–aftershock (MS–AS) sequence is proposed in this study based on city-scale nonlinear time-history

Keywords： regional seismic damage prediction     city-scale nonlinear time-history analysis     mainshock–aftershock sequence    

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Introduction to the special issue on the 2015 Workshop on History of Mechanism and Machine Science

Marco CECCARELLI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 1-2 doi: 10.1007/s11465-016-0379-9

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Parametric study on damage control design of SMA dampers in frame-typed steel piers

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 384-394 doi: 10.1007/s11709-009-0065-7

Abstract: A parametric study based on time history analyses is carried out on frame-typed bridge piers with axial-type

Keywords： design     shape memory alloy     parameter study     displacement-based verification     strain-based verification     timehistory analysis    

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Natural history of HIV infection in former plasma donors in rural China

Min ZHANG, Hong SHANG, Zhe WANG, Wei-Guo CUI, Qing-Hai HU

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 346-350 doi: 10.1007/s11684-010-0102-x

Abstract: FPDs all have an approximate time of human immunodeficiency virus (HIV) infection during the mid-1990sFew studies about the natural history of HIV infection in these patients were performed.The current study focuses on characterizing the duration of asymptomatic infection as well as the timethe onset of AIDS as well as the survival period from the onset of AIDS to the time of death.This is the first large-scale retrospective study on the natural history of HIV infection in FPDs in

Keywords： human immunodeficiency virus (HIV)     former plasma donor     natural history     China    

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The biopharmaceutical industry in China: history and future perspectives

Kai Gao, Junzhi Wang

Frontiers of Medicine 2012, Volume 6, Issue 2,   Pages 101-111 doi: 10.1007/s11684-012-0191-9

Abstract:

Biopharmaceuticals reflect the rapid progress achieved in modern biomedical research. This area has also become one of the main criteria for assessing the development level of biotechnology for a particular country. Although it has been only three decades since the first biopharmaceutical, recombinant human insulin, was licensed by the US Food and Drug Administration, the biopharmaceutical industry has become the fastest growing, most dynamic and technology-intensive sector in the biomedical field. Since the licensing of recombinant human interferon α1b in 1989, the biopharmaceutical industry in China has gone through initial developments and gradually entered a period of rapid growth. This paper provides an overview of the status and development trends of biopharmaceuticals in China, and compares them with those observed in developed countries.

Keywords： biopharmaceuticals     antibodies     market trends     diseases     China     national regulatory agency    

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Seismic analysis of a super high-rise steel structure with horizontal strengthened storeys

Yuanqing WANG, Hui ZHOU, Yongjiu SHI, Yi HUANG, Gang SHI, Siqing WEN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 394-404 doi: 10.1007/s11709-011-0116-8

Abstract: ., mode-superposition response spectrum analysis and time-history analysis, were employed to calculateWith the aid of time-history analysis, the seismic responses of the structure were obtained.The whiplash effect that spectrum analysis cannot reveal was observed through time-history analysis.

Keywords： analysis     steel structure     super high-rise     horizontal strengthened storey     response spectrum analysis     time-history    

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Fuzzy cascade control based on control’s history for superheated temperature

WANG Guangjun, LI Gang, SHEN Shuguang

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 285-289 doi: 10.1007/s11708-007-0040-8

Abstract: uncertainty of superheated temperature, a new cascade control system is presented based on control’s history
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A brief history of wheat utilization in China

Minxia LU, Liang CHEN, Jinxiu WANG, Ruiliang LIU, Yang YANG, Meng WEI, Guanghui DONG

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 3,   Pages 288-295 doi: 10.15302/J-FASE-2019266

Abstract: However, the history of its origin and utilization in China remains highly ambiguous.

Keywords： multidisciplinary evidence     prehistoric food globalization     wheat consumption     wheat domestication    

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An overview of the development history and technical progress of China’s coal-fired power industry

Weiliang WANG, Zheng LI, Junfu LYU, Hai ZHANG, Guangxi YUE, Weidou NI

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 417-426 doi: 10.1007/s11708-019-0614-2

Abstract: To specify the development of coal-fired power industry, its development history is reviewed and the

Keywords： coal-fired power     development strategy     eliminating outdated capacity     peak shaving     emission reduction     renewable energy    

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Association between history of abortion and metabolic syndrome in middle-aged and elderly Chinese women

Baihui Xu, Jie Zhang, Yu Xu, Jieli Lu, Min Xu, Yuhong Chen, Yufang Bi, Guang Ning

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 132-137 doi: 10.1007/s11684-013-0250-x

Abstract: Until recently, studies focusing on the association between history of abortion and metabolic diseasesIn the present study, we aimed to investigate the association between history of abortion and metabolicOverall, we observed a positive association between history of induced abortion and the prevalence ofA multivariable-adjusted logistic regression analysis revealed that compared to those without a historyof induced abortion, women with a history of induced abortion remained at 1.25 times more likely to

Keywords： induced abortion     spontaneous abortion     metabolic syndrome    

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CROP-LIVESTOCK INTEGRATION FOR SUSTAINABLE AGRICULTURE IN CHINA: THE HISTORY OF STATE POLICY GOALS, REFORM

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 518-529 doi: 10.15302/J-FASE-2023525

Abstract:

This paper examines the historical evolution of crop-livestock integration in China with a specific focus on its role in mitigating non-point source pollution. Extensive examination of existing literature has unearthed the roots of crop-livestock integration dating back to the Western Zhou Dynasty (1046 to 771 BCE), ultimately culminating in a multifaceted and intricately interwoven system of rural development policies seen in contemporary China. This paper identifies and characterizes four distinct stages in the historical trajectory of crop-livestock integration: the era of self-sufficient subsistence production in traditional times (1046 BCE to 1948); the period where crop-livestock integration emerged as a pivotal strategy for augmenting grain and meat production under collectivist policies (1949‒1977); the phase marked by the industrialization and expansion of the livestock sector during the early years of economic reforms (1978‒2011); and the present era in which crop-livestock integration is harnessed as a mechanism for pollution control and ecological preservation in contemporary China (2012 to present). This paper illuminates the diverse contributions of crop-livestock integration in different epochs of rural development within China, which contributes to a nuanced and more theoretically grounded comprehension of circular agriculture. This understanding has the potential to be leveraged to promote sustainable rural development in broader contexts.

Keywords： crop-livestock integration     non-point source pollution control     nutrient cycling     policy intervention     sustainable development    

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Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 60-86 doi: 10.1007/s11465-016-0370-5

Abstract:

This report reviews the most important episodes in the history of designing the self-propelled automatic

Keywords： moon rover     self-propelled chassis     propulsion     wheel     suspension     soil properties     cross-country ability    

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Title Author Date Type Operation

Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Journal Article

Nonlinear dynamics of a wind turbine tower

A. GESUALDO, A. IANNUZZO, F. PENTA, M. MONACO

Journal Article

Advanced finite element analysis of a complex deep excavation case history in Shanghai

Yuepeng DONG, Harvey BURD, Guy HOULSBY, Yongmao HOU

Journal Article

Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Journal Article

Introduction to the special issue on the 2015 Workshop on History of Mechanism and Machine Science

Marco CECCARELLI

Journal Article

Parametric study on damage control design of SMA dampers in frame-typed steel piers

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI,

Journal Article

Natural history of HIV infection in former plasma donors in rural China

Min ZHANG, Hong SHANG, Zhe WANG, Wei-Guo CUI, Qing-Hai HU

Journal Article

The biopharmaceutical industry in China: history and future perspectives

Kai Gao, Junzhi Wang

Journal Article

Seismic analysis of a super high-rise steel structure with horizontal strengthened storeys

Yuanqing WANG, Hui ZHOU, Yongjiu SHI, Yi HUANG, Gang SHI, Siqing WEN

Journal Article

Fuzzy cascade control based on control’s history for superheated temperature

WANG Guangjun, LI Gang, SHEN Shuguang

Journal Article

A brief history of wheat utilization in China

Minxia LU, Liang CHEN, Jinxiu WANG, Ruiliang LIU, Yang YANG, Meng WEI, Guanghui DONG

Journal Article

An overview of the development history and technical progress of China’s coal-fired power industry

Weiliang WANG, Zheng LI, Junfu LYU, Hai ZHANG, Guangxi YUE, Weidou NI

Journal Article

Association between history of abortion and metabolic syndrome in middle-aged and elderly Chinese women

Baihui Xu, Jie Zhang, Yu Xu, Jieli Lu, Min Xu, Yuhong Chen, Yufang Bi, Guang Ning

Journal Article

CROP-LIVESTOCK INTEGRATION FOR SUSTAINABLE AGRICULTURE IN CHINA: THE HISTORY OF STATE POLICY GOALS, REFORM

Journal Article

Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

Journal Article