نتایج جستجو برای: design acceleration spectrum

تعداد نتایج: 1211002  

Journal: :journal of structural engineering and geo-techniques 2012
a delnavaz a rahaee

performance of structures during recent earthquakes shows that the effect of vertical component of earthquake (vce) could be considered as one of the main causes of bridges collapse. in most of bridge design codes, for seismic analysis of bridges, vce is not taken into account or a distinguished method isn’t presented for assessment of vce. in the present work, the effect of vce on two existing...

2003
Ingrid Verbauwhede

Embedded system design is a co-design of domains requiring domain-specific processors and a flexible platform architecture to support them. In this report we describe the design, the integrated HW/SW architecture platform and the associated design methods for the Thumbpod case study. It is a secure embedded system, which uses cryptographic and biometric signal processing acceleration. This repo...

Background and objective: Experience with past earthquakes and numerical analysis confirms that the durability of strong earth motion, significantly can affect the amount of failure of civil engineering systems. However, if the durability is related to a parameter which describes the intensity of the earth's motion, such as maximum velocity or maximum acceleration or spectral acceleration, then...

2013
Laurence Zsu-Hsin Chuang Li-Chung Wu Jong-Hao Wang

Accelerometers, which can be installed inside a floating platform on the sea, are among the most commonly used sensors for operational ocean wave measurements. To examine the non-stationary features of ocean waves, this study was conducted to derive a wavelet spectrum of ocean waves and to synthesize sea surface elevations from vertical acceleration signals of a wave buoy through the continuous...

1996
T. A. Porter R. J. Protheroe

Short Title: Cosmic-ray electrons and diffuse gamma-ray spectrum 1 Abstract The bulk of the diffuse galactic gamma-ray emission above a few tens of GeV has been conventionally ascribed to the decay of neutral pions produced in cosmic-ray interactions with interstellar matter. Cosmic-ray electrons may, however, make a significant contribution to the gamma-ray spectrum at high energies, and even ...

Journal: :Applied sciences 2023

Ground-motion simulations provide input time history data required for designing and assessing structures; however, the conducted by currently available tools only match design spectrum without verifying if statistical characteristics of duration are satisfied. A ground-motion simulation software was developed to resolve these issues. The employs machine learning methods amplitude, spectrum, fe...

2004
Matthew G. Baring

The process of diffusive acceleration of charged particles in shocked plasmas is widely invoked in astrophysics to account for the ubiquitous presence of signatures of non-thermal relativistic electrons and ions in the universe. A key characteristic of this statistical energization mechanism is the absence of a momentum scale; astrophysical systems generally only impose scales at the injection ...

2009
Michael J. Mortonson

The CMB temperature power spectrum offers ambiguous evidence for the existence of horizonscale power in the primordial power spectrum due to uncertainties in spatial curvature and the physics of cosmic acceleration as well as the observed low quadrupole. Current polarization data from WMAP provide evidence for horizon-scale power that is robust to these uncertainties. Polarization on the larges...

2005
E. V. Derishev F. A. Aharonian Vl. V. Kocharovsky

We analyze how the spectrum of synchrotron and inverse Compton radiation from a narrow relativistic jet changes with the observation angle. It is shown that diversity of acceleration mechanisms (in particular, taking the converter mechanism (Derishev et al. 2003) into account) allows for numerous modifications of the observed spectrum. In general, the off-axis emission in GeV-TeV energy range a...

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