نتایج جستجو برای: vertical and rocking impedances

تعداد نتایج: 16843173  

Ali Sheidaei, Alireza Abadi, Anita Mansouri, Farid Zayeri, Fatemeh Nahidi, Nafiseh Gazerani,

Background: Infantile colic, cry-fuss and sleep problems are transient in the initial months of life, but they contribute to maternal depression, parenting stress and family mental health problems. In this randomized clinical trial, we aimed to explore the efficacy of massage therapy compared to rocking in reducing infantile colic symptoms including duration and number of cries, sleep duration ...

The asymmetric problem of rocking rotation of a circular rigid disk embedded in a finite depth of a transversely isotropic half-space is analytically addressed. The rigid disk is assumed to be in frictionless contact with the elastic half-space. By virtue of appropriate Green's functions, the mixed boundary value problem is written as a dual integral equation. Employing further mathematical tec...

2012
Lijun Deng Bruce L. Kutter Sashi K. Kunnath

Many engineers are hesitant to specify rocking foundations for ordinary bridges because of the unsubstantiated notion that rocking bridges are more susceptible to instability than conventional fixed-base bridges. A parametric study using a finite element model including large deformation effects compares the performance and stability of stiff, flexible, tall, and short hinging-column and rockin...

Journal: :Earthquake Engineering & Structural Dynamics 2022

This paper presents the numerical and experimental evaluation of a vertical-rocking isolation (VRI). is done by 1-D shaking table tests performed on full-scale legged storage tank 3000-liters capacity its representation through simple yet representative rigid lumped-mass model approach. The system setup consisted four ISO3D-2G devices, each one placed leg tank, which uses high-damping natural r...

Journal: :Anais do VI Simpósio Brasileiro de Sistemas Elétricos 2022

Transmission towers are an essential component for the functioning of a country’s electrical system. In countries with large extension transmission lines and high incidence lightning, problems related to interaction between lightning quite intense. Thus, it is fundamental importance develop models that compute response system when electromagnetic transient established. This article aims present...

2002
Hakan Urey

In scanning display systems, high horizontal and vertical resolution, and high refresh rate requirements translate into large mirror-size scan-angle product and high scanner-frequency requirements. A comparison between published scan-angle mirror-size product values for MEMS scanners and a Steel mechanical scanner is presented. Current performance levels of Steel mechanical scanners are better;...

Journal: :European heart journal cardiovascular Imaging 2016
Abdul Ghani Peter Paul H M Delnoy Jan Paul Ottervanger Anand R Ramdat Misier Jaap Jan J Smit Ahmet Adiyaman Arif Elvan

AIMS Correctly identifying patients who will benefit from cardiac resynchronization therapy (CRT) is still challenging. 'Apical rocking' is observed in asynchronously contracting ventricles and is associated with echocardiographic response to CRT. The association of apical rocking and long-term clinical outcome is however unknown at present. We assessed the predictive value of left ventricular ...

2017
F. W. Schapink

Convergent-beam electron diffraction (CBED) has been applied in grain boundary structure determination, both for horizontal and vertical boundaries in thin specimens. First the relation between bicrystal symmetry and CBED pattern symmetry is developed for the two types of boundaries. These results are subsequently employed for a structure determination of twin boundaries in Au and Si. The CBED ...

2011
Eduardo Kausel

Introduced as a system in earthquake engineering in 2004 [6], rocking walls are a fairly new system in earthquake engineering. Their performance has been proven, both in research as in practice. However, a few uncertainties about their behavior still remain. One of these uncertainties is the effect of radiation damping on the motion of the system. Existing estimations for the radiation damping ...

2008
Penny Bonadonna

This study measures the effect of a vestibular stimulal10n program on the stereo typic rocking behavIor of three severely mentally retarded persons within both experimental and natural settmgs. A multiple baselme desIgn was used. Frequency and duration of stereotypic rocking behavior were measured by a partwl-intervaltime sample. Results indicated a statistically sIgnifIcant reduction of both f...

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