Results 41 to 50 of about 957,853 (123)

单峰式加速度反应谱规律性偏差统计研究

open access: yesDizhen xuebao
强震动记录显示,加速度反应谱普遍存在幅值大、宽度小的窄峰,这在现有地震动衰减关系(强震动预测方程)未能予以充分呈现。基于日本KiK-net台网近二十万条强震动记录,采用高斯曲线对单峰式加速度反应谱规律性偏差进行了拟合,利用高度、中心周期、宽度等三个参数对单峰式加速度反应谱规律性偏差予以参数化表征,分析了多个地震动、场地条件表征参数与这三个参数间的相关性,并据此建立了单峰式加速度反应谱规律性偏差的经验预测模型。分析结果表明,所建立的单峰式加速度反应谱规律性偏差经验预测模型 ...
Yushi Wang   +4 more
doaj   +1 more source

V S30, slope, H 800 and f 0: performance of various site-condition proxies in reducing ground-motion aleatory variability and predicting nonlinear site response

open access: yesEarth, Planets and Space, 2017
The aim of this paper is to investigate the ability of various site-condition proxies (SCPs) to reduce ground-motion aleatory variability and evaluate how SCPs capture nonlinearity site effects. The SCPs used here are time-averaged shear-wave velocity in
Boumédiène Derras   +2 more
doaj   +1 more source

Prediction and analysis model for ground peak acceleration based on XGBoost and SHAP

open access: yesYantu gongcheng xuebao, 2023
In order to establish a prediction method for the ground peak acceleration (PGA) that does not depend on the soil constitutive model but only on the ground motion and site characteristics, six characteristic parameters are chosen through the feature ...
QI Wanwan 1, 2, SUN Rui 1, 2, ZHENG Tong 1, 2, QI Jinlei 1, 2
doaj   +1 more source

Genetic and Environmental Effects on BMI Fluctuation Across the Adult Life Course and Its Associations With Baseline BMI and BMI Change: An Individual‐Based Study of 14 Longitudinal Twin Cohorts

open access: yesDiabetes, Obesity and Metabolism, Volume 28, Issue 9, Page 8418-8427, September 2026.
ABSTRACT Introduction Body mass index (BMI) fluctuation has adverse health consequences, yet its determinants remain poorly understood. We examined genetic and environmental influences on BMI fluctuation and its associations with BMI trajectories. Data and Methods Data from 14 longitudinal twin cohorts, including 58 311 individuals (54% women) and 22 ...
Alvaro Obeso Fernandez   +39 more
wiley   +1 more source

基于KiK-net强震动记录的加速度反应谱规律性偏差

open access: yesDizhen xuebao
地震动特性受到地震震源、地震波传播介质和局部场地条件等因素的综合影响,虽然地震动反应谱虽然具有统计意义上的共性,但其具体形状又各不相同,特别是部分加速度反应谱与统计平均值之间存在显著的规律性偏差。为了进一步探究加速度反应谱与统计平均值之间的规律性偏差,本文基于日本KiK-net台网获取的8万余条强震动记录,建立了考虑地震震级和震中距影响的地面峰值加速度归一化加速度反应谱,并以预测值+0.5倍方差为界将加速度反应谱分为有、无反应谱规律性偏差的两组。通过有反应谱规律性偏差的反应谱(观测值 ...
Mingming Yuan, Xiaojun Li, Yushi Wang
doaj   +1 more source

Bayesian inference and interpretation of centroid moment tensors of the 2016 Kumamoto earthquake sequence, Kyushu, Japan

open access: yesEarth, Planets and Space, 2017
On April 16, 2016, Kumamoto prefecture in Kyushu region, Japan, was devastated by a shallow M JMA7.3 earthquake. The series of foreshocks started by M JMA6.5 foreshock 28 h before the mainshock.
Miroslav Hallo   +2 more
doaj   +1 more source

Association Between Charlson Comorbidity Index and Pressure Injury Stage: A Retrospective Cohort Study

open access: yesInternational Wound Journal, Volume 23, Issue 9, September 2026.
ABSTRACT Pressure injuries (PIs) are a major clinical burden in patients with multiple comorbidities. The Charlson Comorbidity Index (CCI) is a validated comorbidity measure; however, its quantitative association with PI severity remains poorly characterised.
Jay Hyun Pak   +9 more
wiley   +1 more source

Correlation of the slope of the initial part of P-wave envelope, hypocenter depth and plate boundary

open access: yesGeodesy and Geodynamics, 2018
We investigated correlation of the slope of the initial part of P-wave envelope, hypocenter depth and plate boundaries by B-Δ method, which is used to determine epicentral distances in the Japan Meteorological Agency and Japan Railway Company earthquake ...
Chao Lian   +3 more
doaj   +1 more source

The region of large site amplification in Northern Hokkaido, Japan, extends to the eastern Soya Region

open access: yesEarth, Planets and Space, 2023
In the document titled “predominant period of long-period ground motions and the natural period of deep subsoil” by the Central Disaster Management Council, the west part of Northern Hokkaido facing the Sea of Japan is categorized as a region, where long-
Atsushi Nozu
doaj   +1 more source

Investigating the Binding Mode of a Naphthol‐Based Inhibitor Targeting SARS‐CoV‐2 Main Protease

open access: yesChemMedChem, Volume 21, Issue 16, 27 August 2026.
A highly integrated workflow combining various computational, biophysical, and biochemical methods guides the discovery and characterization of an original naphthol‐based scaffold with inhibitory activity against the main protease of SARS‐CoV‐2 and demonstrates the efficiency of a sophisticated, open‐access consensus ranking protocol for virtual ...
Ifigeneia Akrani   +11 more
wiley   +1 more source

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