Results 71 to 80 of about 51,376 (264)

Association between anti-α-1,4-D-polygalacturonic acid antibodies and Henoch-Schönlein purpura in children

open access: yesJournal of International Medical Research, 2019
Objective To investigate the relationship between anti-α-1,4-D-polygalacturonic acid (PGA) antibodies, particularly immunoglobulin (Ig)A, and Henoch-Schönlein purpura (HSP) in children.
Meihua Miao   +5 more
doaj   +1 more source

Power vs. Precision: How Have the Determinants of PGA TOUR Golfers' Performance-Based Earnings Evolved Since the 1990's?

open access: yes, 2012
This paper improves upon the methods for modelling the determinants of PGA TOUR golfers’ performance-based earnings by incorporating the most recent and accurate PGA TOUR statistics while controlling for year and individual fixed effects.
Lutes, Michael F.
core  

Directionality Scaling of Scalar and Vector Ground Motion Intensity Measures

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The azimuthal directionality of earthquake ground‐motion intensity measures (IMs) is conventionally described by the ratios between the orientation‐independent maximum (RotD100) and median (RotD50) values over the horizontal plane. This study presents a refined characterization of the directionality of 31 IMs, including spectral accelerations (
Mao‐Xin Wang, Gang Wang
wiley   +1 more source

An Intensity Measure‐Based Methodology for Ground Motion Orientation in Seismic Structural Assessment

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT In current dynamic time history assessment protocols, ground motion recordings are mostly oriented along fixed sensor directions. Consequently, the orientation of the principal resultant of rupture energy, which may control the maximum structural demand, remains undefined, precluding consistent correlation with physically detrimental ...
Santiago Londono‐Lopez   +4 more
wiley   +1 more source

Do Tournaments Have Incentive Effects? [PDF]

open access: yes
Much attention has been devoted to studying models of tournaments or situations in which an individual's payment depends only on his output or rank, relative to other competitors.
Ronald G. Ehrenberg, Michael L. Bognanno
core  

Development and Validation of a Seismic Design Method for Anchored Retaining Walls

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Retaining walls with multiple anchor levels are widely used as permanent excavation support systems for the construction of linear infrastructures. Yet, their seismic behaviour remains largely unexplored, and current design approaches rely on conventional procedures that do not adequately reflect the actual dynamic response of these systems ...
Luigi Callisto   +2 more
wiley   +1 more source

Three‐Dimensional Analytical Model of a Podium Structure With Rocking Columns of Square Cross Section

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Allowing structural systems to uplift and rock during seismic excitation has emerged as an effective and inherently self‑centering form of seismic isolation. This paper develops a computationally efficient 3D analytical model suitable for the understanding of the behavior of rocking bridges.
Dimitra Adamopoulou   +1 more
wiley   +1 more source

Enhancing the Seismic Resilience of Masonry‐Infilled RC Structures Using Rubber Joints: Full‐Scale 3D Shaking Table Tests

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Masonry infills in reinforced concrete (RC) frames are highly vulnerable to seismic damage, often sustaining severe cracking even under moderate ground motion, which in turn leads to considerable economic losses and safety risks. To address this issue, this study experimentally evaluates the effectiveness of two innovative rubber‐based joints ...
Enrico Tubaldi   +16 more
wiley   +1 more source

Direction‐Aware Period Prediction for Seismic Risk Assessment and Application to an Urban Tall Building Portfolio in China

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Reliable estimation of the principal periods is essential for regional seismic risk assessment (RSRA) of urban building portfolios. For tall buildings, however, existing period‐prediction formulas are constrained by the lack of representative data, while building translational azimuths are neglected despite their importance for regional ...
Zi‐Nan Wu   +2 more
wiley   +1 more source

A Parametric Computational Framework for Modeling and Seismic Design of Post‐Tensioned Mass Timber Rocking Walls

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Post‐tensioned cross‐laminated timber (PT‐CLT) rocking walls offer a compelling seismic system combining self‐centering behavior with energy dissipation. However, progress in their performance assessment and design has been limited by the lack of a comprehensive parametric modeling tool, as exists for steel or reinforced concrete systems. This
Ghasem B. Shargh   +3 more
wiley   +1 more source

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