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Dizhen xuebao, 2019 鉴于传统的地震动强度表征参数（IM）不能有效地反映速度脉冲型地震动的破坏特征，需要研究能够在全周期段内表征速度脉冲型地震动强度的参数。本文首先从NGA-West2强震数据库中选取了236条速度脉冲记录，分析了42种地震动参数之间的相似性和相关性，初步给出了速度脉冲型地震动强度的表征参数；其次，利用单自由度体系动力时程分析方法，研究了不同延性μ条件下速度脉冲型地震动强度表征参数与最大非线性位移um之间的相关性系数随周期T的变化特征 ...
Xiaofen Zhao +3 more
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Selection of appropriate intensity measure for collapse capacity prediction of low to mid-rise steel special moment resisting frames [PDF]
Journal of Structural and Construction Engineering, 2017 A parameter that quantitatively represents the strength of a ground motion is called Intensity Measure (IM). The value of an IM for a given hazard level is the output parameter of Probabilistic Seismic Hazard Analysis (PSHA) which is used in structural ...
Hamid Reza Jamshidiha +2 more
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Measurement in Intensive Longitudinal Data
Structural Equation Modeling: A Multidisciplinary Journal, 2021 Technological advances have increased the prevalence of intensive longitudinal data as well as statistical techniques appropriate for these data, such as dynamic structural equation modeling (DSEM). Intensive longitudinal designs often investigate constructs related to affect or mood and do so with multiple item scales.
Daniel McNeish +3 more
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Scalar and vector-valued fragility analysis of typical Algerian RC bridge piers
Građevinar, 2023 This paper presents and discusses an approach for performing scalar and vector vulnerability assessments of typical Algerian RC bridge piers. Across incremental dynamic analysis, the seismic response was calculated while considering 60 seismic ground ...
Fouad Kehila +2 more
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Intensity measurements in scattering media [PDF]
Sensors and Actuators B: Chemical, 1999 We describe a new method which allows quantitative measurements of fluorescence intensity in highly scattering media. The measurement principle is based on observing the emission from both the fluorophore of interest with a nanosecond decay time and of a reference fluorophore which displays a much longer microsecond lifetime.
Joseph R, Lakowicz +2 more
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Ground motion intensity measures and dynamic response indexes of metro station structures
Yantu gongcheng xuebao, 2020 There are many kinds of ground motion intensity measures that affect the dynamic response of metro stations. It is of great practical significance to study the correlation between the ground motion intensity measures and the structural seismic response ...
ZHONG Zi-lan , SHEN Yi-yao , ZHEN Li-bin , ZHANG Cheng-ming , ZHAO Mi , DU Xiu-li
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Home-Made Simple Experiment to Measure Sound Intensity using Smartphones
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, 2021 The researchers present a simple experimental activity to measure the sound intensity level using an Android-based smartphone to prove the inverse square law and analyze the dependence of the sound intensity to the sound source frequency.
Ade Yeti Nuryantini +2 more
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Intensity Measurements in the Helium Spectrum [PDF]
Physical Review, 1928 The absolute and relative intensities of thirteen lines of the helium spectrum, extending through the visible region, have been measured by a modification of the method developed by Ornstein and Dorgelo. The change of the method has consisted in comparing each line directly with the known emission from a tungsten filament, operated under constant ...
Hodges, Clarence, Michels, W. C.
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Seismic performance evaluation of underground structures using endurance time analysis
Yantu gongcheng xuebao, 2020 The endurance time analysis (ETA) is an efficient seismic performance evaluation method characterized by developing series of seismic response compatible acceleration time histories whose amplitudes increase with the duration.
ZHONG Zi-lan , ZHEN Li-bin , SHEN Yi-yao , ZHAO Mi , DU Xiu-li
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