Results 21 to 30 of about 1,032,894 (314)
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
openaire +3 more sources
Measuring Performance in Knowledge-intensive Processes [PDF]
ACM Transactions on Internet Technology, 2019 Knowledge-intensive Processes (KIPs) are processes whose execution is heavily dependent on knowledge workers performing various interconnected knowledge-intensive decision-making tasks. Among other characteristics, KIPs are usually non-repeatable, collaboration-oriented, unpredictable, and, in many cases, driven by implicit knowledge, derived from the ...
Bedilia Estrada-Torres +6 more
openaire +3 more sources
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
doaj +1 more source
Determining the Optimal Scalar Intensity Measure of Floor Communication Towers
Shock and Vibration, 2022 Various structural types and ground motion characteristics lead to distinct intensity measures of structural seismic performance. For the lattice high-rise steel structure of communication towers, determining the intensity measures to adjust ground ...
Bo Li +4 more
doaj +1 more source
Infrared Small Target Detection Based on Gradient-Intensity Joint Saliency Measure
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Small target detection is an arduous mission in the infrared search and tracking system, especially when the target signal is disturbed by high-intensity background clutters.
Yongsong Li +3 more
doaj +1 more source
, 2021 Associations between intensity of exposure to conflict and CoC using continuous measure of confict intensity.
Astghik Mavisakalyan (11495114) +3 more
core +1 more source