نتایج جستجو برای: peak ground acceleration

تعداد نتایج: 322565  

2012
Duruo Huang Jui-Pin Wang

This study developed a national seismic hazard map around Taiwan through a deterministic manner. The essential of this approach is to treat every historic event as a potential point source, then with the seismic hazard taken as the maximum ground motion resulted from the series of earthquake events. A program developed in-house was used to carry out mass computation and map-making. The results ...

2004
N. N. Ambraseys J. Douglas S. K. Sarma

This article presents equations for the estimation of horizontal strong ground motions caused by shallow crustal earthquakes with magnitudes Mw ≥ 5 and distance to the surface projection of the fault less than 100 km. These equations were derived by weighted regression analysis, used to remove observed magnitude-dependent variance, on a set of 595 strong-motion records recorded in Europe and th...

2009
Masumi Yamada Anna H. Olsen Thomas H. Heaton

This study collects recorded ground motions from the near-source region of large earthquakes and considers to what extent this historic record can inform expectations of future ground motions at similar sites. The distribution of observed peak ground acceleration (PGA) is well approximated by the lognormal distribution, and we expect the observed distribution to remain unchanged with the additi...

Journal: :Comp.-Aided Civil and Infrastruct. Engineering 2011
A. Philips Adewuyi Zhishen Wu

1 A Dantzig-Wolfe Decomposition-Based Heuristic for Off-line Capacity Calibration of Dynamic Traffic Assignment / D.-Y. Lin. V. Vatsaraj, S.T. Waiter 16 Influence of Demand Uncertainty and Correlations on Traffic Predictions and Decisions / J.C. Duthie.A. Unnikrishnan, S.T. Waiter 30 Peak Ground Acceleration Estimation by Linear and Nonlinear Models with Reduced Order Monte Carlo Simulation / K...

Journal: :journal of structural engineering and geo-techniques 2012
m. askari hasan aghbarati

near-fault ground motions have caused very much damage in the vicinity of seismic sources during recent earthquakes. it is well known that under specific circumstances, intensive ground shakings near fault ruptures may be characterized by short-duration impulsive motions. this pulse-type motion is generally particular to the forward direction, where the fault rupture propagates towards the site...

2006
Bruce E. Shaw

[1] Using a model of a complex fault system, we examine the initiation, propagation, and termination of ruptures and their relationship to fault geometry and shaking hazard. We find concentrations of epicenters near fault step overs and ends; concentrations of terminations near fault ends; and persistent propagation directivity effects. Taking advantage of long sequences of dynamic events, we d...

Background & Aim: Genu varum is one of the most common abnormalities of the knee joint in which the inner condyles of the femur move away from each other. The aim of the present study was to compare efficiency of exercise on the treadmill and ground on the ground reaction forces during walking in people with genu varum. Material & Methods: The present study was a quasi-experimental and laborat...

Journal: :Journal of applied biomechanics 1993
Ewald M Hennig Thomas L Milani Mario A Lafortune

Ground reaction force data and tibial accelerations from a skin-mounted transducer were collected during rearfoot running at 3.3 m/s across a force platform. Five repetitive trials from 27 subjects in each of 19 different footwear conditions were evaluated. Ground reaction force as well as tibial acceleration parameters were found to be useful for the evaluation of the cushioning properties of ...

Journal: :Circulation 1986
H N Sabbah F Khaja J F Brymer T M McFarland D E Albert J E Snyder S Goldstein P D Stein

Peak aortic blood acceleration is recognized to be a sensitive index of global left ventricular performance. In the present study peak acceleration was assessed noninvasively in patients with a continuous-wave Doppler velocity meter. Peak aortic blood velocity and peak blood acceleration were measured by placing the ultrasonic transducer at the suprasternal notch. Measurements were obtained in ...

Journal: :The Journal of experimental biology 2009
Rebecca M Walter David R Carrier

Because the ability to accelerate rapidly is crucial to the survival and reproductive fitness of most terrestrial animals, it is important to understand how the biomechanics of rapid acceleration differs from that of steady-state locomotion. Here we compare rapid acceleration with high-speed galloping in dogs to investigate the ways in which body and limb posture and ground forces are altered t...

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