نتایج جستجو برای: earthquake resistance

تعداد نتایج: 404730  

2010
K. N. Kappler H. Frank Morrison G. D. Egbert

Received 3 March 2009; revised 13 October 2009; accepted 30 October 2009; published 9 April 2010. [1] Electric and magnetic fields in the (10–1.0) Hz band were monitored at two sites adjacent to the San Andreas Fault near Parkfield and Hollister, California, from 1995 to 2007. A data window (2002–2005), enclosing the 28 September 2004 M6 Parkfield earthquake, was analyzed to determine if anomal...

2014
Jing Zang Hu Liu Xianping Ni

In order to better research the role helicopter played in the earthquake rescue, a helicopter earthquake rescue mission modeling method based on multi-agent was proposed. The elements of the earthquake environment modeling were described. Typical helicopter rescue missions in earthquake relief were divided into three basic types, and the mission flow was carded. The division and function of age...

2001
Shunsuke Otani

The development of seismic vulnerability evaluation standards for reinforced concrete buildings in Japan is briefly reviewed. Damage statistics are shown to indicate that severe damage was observed in a relatively small percentage of existing buildings even after damaging earthquakes in the world. Therefore, a simple screening procedure is necessary to identify such vulnerable buildings out of ...

2012
George C. Lee

In earthquake resistance design of structures, two general concepts have been used. The first is to increase the capacity of the structures to resist the earthquake load effects (mostly horizontal forces) or to increase the dynamic stiffness such as the seismic energy dissipation ability by adding damping systems (both devices and/or structural fuses). The second concept includes seismic isolat...

2006
Y. Y. Kagan

1. The multidimensional character of seismicity: time, space, and earthquake focal mechanism need to be modeled. The latter is a symmetric second-rank tensor of a special kind. 2. The intrinsic randomness of earthquake occurrence, necessitating the use of stochastic point processes and appropriate complex statistical techniques. 3. The scale-invariant or fractal properties of earthquake process...

2014
Yongzhong Cheng Fang Wang Jin Wen Yingkang Shi

BACKGROUND Few clues were found in the literature about the independent risk factors for PTSD among earthquake survivors in Sichuan province three years after the 2008 earthquake. Ours was the first case-control study with matching factors of age and distance from the epicenter among survivors age 16 years or older, three years after the catastrophe. OBJECTIVES To identify independent risk fa...

2000
G. MESZÉNA É. KISDI U. DIECKMANN S. A. H. GERITZ J. A. J. METZ

Department of Biological Physics, Eötvös University, Budapest, Hungary, Department of Mathematics, University of Turku, Turku, Finland, Department of Genetics, Eötvös University, Budapest, Hungary, Adaptive Dynamics Network, International Institute for Applied Systems Analysis, Laxenburg, Austria, Section Theoretical Evolutionary Biology, Institute of Evolutionary and Ecological Sciences (EEW),...

2009

• allow teleparticipation by remote users in tests performed in any of the three laboratories, • provide open access to consistently formatted data from tests in the three laboratories, • enable synchronous distributed tests between the three laboratories, maximising the size of structure that can be tested, and • allow the laboratories to link into the US NEES network, giving access to advance...

2005

ABSTRACT The method described in Part 1 of this paper was applied to about 30 earthquakes in various parts of the world. The modified single couple hypothesis proposed in Part 1 appears to explain the observations generally better than the double couple hypothesis. Surprisingly consistent pictures of tectonics were obtained in the Mediterranean region and in Japan on the basis of the modified s...

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