• Thumbnail for Spectral acceleration
    Spectral acceleration (SA) is a unit measured in g (the acceleration due to Earth's gravity, equivalent to g-force) that describes the maximum acceleration...
    3 KB (232 words) - 12:56, 25 March 2025
  • Thumbnail for Spectral density
    energy is finite, one may compute the energy spectral density. More commonly used is the power spectral density (PSD, or simply power spectrum), which...
    37 KB (5,864 words) - 21:13, 4 May 2025
  • simulation Japan Meteorological Agency seismic intensity scale Spectral acceleration Douglas, J (2003-04-01). "Earthquake ground motion estimation using...
    27 KB (2,265 words) - 04:30, 22 April 2025
  • component of aviation safety and other socio-technical systems Spectral acceleration, in seismology and earthquake engineering Superabundant number,...
    6 KB (801 words) - 12:01, 8 April 2025
  • Thumbnail for Response spectrum
    like in seismic performance analysis technique. Peak ground acceleration Spectral acceleration "Earthquake Hazards Program: Michoacan, Mexico 1985 September...
    7 KB (881 words) - 19:32, 22 February 2023
  • emergency scale Seismic intensity scales Seismic magnitude scales Spectral acceleration Strong ground motion Their modifications were mainly to degrees...
    26 KB (2,037 words) - 14:43, 7 May 2025
  • of the world: Earthquake engineering Peak ground acceleration Seismic performance Spectral acceleration Bormann, Wendt & Di Giacomo 2013, §3.1.2.1. Doi...
    11 KB (1,129 words) - 17:23, 1 April 2025
  • measured as peak ground velocity (PGV), peak ground acceleration (PGA) or spectral acceleration (SA) at a building's period of excitation. In regions...
    81 KB (8,877 words) - 09:56, 4 May 2025
  • Fermi acceleration, sometimes referred to as diffusive shock acceleration (a subclass of Fermi acceleration), is the acceleration that charged particles...
    5 KB (710 words) - 03:37, 24 August 2024
  • Thumbnail for Random vibration
    measurement of the acceleration spectral density (ASD) is the usual way to specify random vibration. The root mean square acceleration (Grms) is the square...
    3 KB (374 words) - 19:39, 12 February 2025
  • Thumbnail for Seismic base isolation
    most strong-motion records recorded up to that time had very low spectral acceleration values (2 sec) in the long-period range. Records obtained from lakebed...
    16 KB (1,764 words) - 22:06, 10 May 2025
  • Thumbnail for Nuclear power in France
    include the use of intensity in the evaluation method, rather than spectral acceleration, which is commonly used elsewhere. Following the 2011 Fukushima...
    105 KB (10,848 words) - 16:41, 27 April 2025
  • Thumbnail for Doppler ultrasonography
    transducer). Meanwhile, spectral Doppler not only shows the direction of blood flow, it also shows the phases (pulsatility) and acceleration of the blood flow...
    20 KB (2,164 words) - 14:16, 21 April 2025
  • the peak ground acceleration, peak ground velocity or Arias intensity, but the most widely used is the 5%-damped spectral acceleration at the first-mode...
    8 KB (976 words) - 09:34, 13 November 2023
  • Seismic retrofit Seismic site response Soil structure interaction Spectral acceleration Bozorgnia, Yousef; Bertero, Vitelmo V. (2004). Earthquake Engineering:...
    67 KB (7,313 words) - 10:43, 12 May 2025
  • Thumbnail for Accelerating expansion of the universe
    Supernova Search Team, which used distant type Ia supernovae to measure the acceleration. The idea was that as type Ia supernovae have almost the same intrinsic...
    42 KB (5,167 words) - 06:09, 7 April 2025
  • (negating some of the initial increases) and increases the expected spectral acceleration response requiring stronger foundations and connection strengths...
    12 KB (1,604 words) - 18:05, 30 December 2024
  • Zone 3 = 0.36g (Zakynthos Island, Cephalonia Island) Canada uses Spectral acceleration Bozorgnia, Yousef; Bertero, Vitelmo V. (2004). Earthquake Engineering:...
    1 KB (163 words) - 21:56, 28 March 2024
  • Thumbnail for Contained earth
    4299 the following risk levels are based roughly on 0.2 second spectral acceleration (Ss) from 2% probability of exceedance in 50 years. Builders may...
    11 KB (1,363 words) - 02:32, 12 August 2023
  • a very strong maximum acceleration (about 170   c m / s 2 {\displaystyle 170~cm/s^{2}} ). We may notice that the acceleration amplitude strongly decreases...
    17 KB (2,345 words) - 22:25, 30 March 2025
  • Thumbnail for Solar flare
    identifiable phases: a precursor phase, an impulsive phase when particle acceleration dominates, and a gradual phase in which hot plasma injected into the...
    50 KB (5,297 words) - 19:04, 5 May 2025
  • Thumbnail for Interstellar Mapping and Acceleration Probe
    The Interstellar Mapping and Acceleration Probe (IMAP) is a heliophysics mission that will simultaneously investigate two important and coupled science...
    22 KB (2,588 words) - 22:07, 9 February 2025
  • Thumbnail for Shell star
    Shell stars have spectral types O7.5 to F5, with rotation velocities of 200–300 km/s, not far from the point when the rotational acceleration would disrupt...
    5 KB (681 words) - 09:03, 10 May 2024
  • Thumbnail for Brownian motion
    the Kronecker delta. The spectral content of a stochastic process X t {\displaystyle X_{t}} can be found from the power spectral density, formally defined...
    55 KB (7,140 words) - 01:57, 7 May 2025
  • Thumbnail for Bohr model
    model's key success lies in explaining the Rydberg formula for hydrogen's spectral emission lines. While the Rydberg formula had been known experimentally...
    75 KB (10,383 words) - 08:43, 12 May 2025
  • Thumbnail for List of nearest stars by spectral type
    the nearest stars separated by spectral type. The scope of the list is still restricted to the main sequence spectral types: M, K, F, G, A, B and O. It...
    192 KB (15,778 words) - 00:08, 30 April 2025
  • database-oriented range-query formulation of DBSCAN allows for index acceleration. The algorithms slightly differ in their handling of border points. Consider...
    29 KB (3,492 words) - 20:41, 25 January 2025
  • methodology Aspirating smoke detector, an indoor fire-protection device Acceleration spectral density, a mechanical vibration test parameter Aeronautical Systems...
    3 KB (341 words) - 23:33, 12 May 2025
  • Thumbnail for Thermal radiation
    material. Kinetic energy is converted to electromagnetism due to charge-acceleration or dipole oscillation. At room temperature, most of the emission is in...
    57 KB (6,896 words) - 10:59, 15 April 2025
  • Thumbnail for Tomography
    electrodynamics this acceleration leads to the emission of electromagnetic radiation (Jackson, 1975). Linear particle acceleration is one possibility,...
    19 KB (1,694 words) - 05:11, 17 January 2025