نتایج جستجو برای: mass damping ratio

تعداد نتایج: 952842  

2004
J. V. Clark D. Garmire

We propose practical analysis techniques to accurately measure geometric, dynamic, and material properties of MEMS. Analytical methods and test structures are presented to extract over a dozen properties by electric probing in a minimal chip area. Geometric properties include fabrication error with respect to layout geometry such as beam widths, gap spacings, etch holes, and beam lengths. Dynam...

Journal: :Physical review 2022

In this work, we propose a new subclass of extreme-mass-ratio-inspirals (EMRIs): mass-gap EMRIs, consisting compact object in the lower mass gap $\ensuremath{\sim}(2.5\ensuremath{-}5)\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$ and massive black hole (MBH). The (MGO) may be primordial or produced from delayed supernova explosion. We calculate formation rate EMRIs both (dry) loss-cone channel (w...

Journal: :journal of operation and automation in power engineering 2007
m. darabian s. jalilzadeh m. azari

this paper focuses on multi-objective designing of multi-machine thyristor controlled series compensator (tcsc) using strength pareto evolutionary algorithm (spea). the tcsc parameters designing problem is converted to an optimization problem with the multi-objective function including the desired damping factor and the desired damping ratio of the power system modes, which is solved by a spea ...

Journal: :journal of occupational health and epidemiology 0
a ghanbary sartang 1. msc occupational health engineering , bandar abbas, iran. m ashnagar corresponding author(msc industrial psychology, bandar abbas, iran e habibi professor. occupational health engineering, school of health, isfahan university of medical sciences, isfahan, iran. i nowrouzi . bs petroleum engineering, bandar abbas, iran h ghasemi

background: today, obesity is considered as a health problem that increases the risk of some diseases. therefore, identifying the effective factors on obesity is of great importance. shift work is one of the indicators for increased risk of obesity in society and also shift work may cause various health problems for workers in military organizations. the current study aimed to investigate the r...

Journal: :Journal of applied biomechanics 2005
Peter L Davidson Brendan Mahar David J Chalmers Bary D Wilson

This study was to determine estimates of the stiffness and damping properties of the wrist, and shoulder in children by examining wrist impacts on the outstretched hand in selected gymnastic activities. The influence of age, mass, and wrist and torso impact velocity on the stiffness and damping properties were also examined. Fourteen young gymnasts (ages 8 to 15 yrs) were videotaped while perfo...

This paper focuses on multi-objective designing of multi-machine Thyristor Controlled Series Compensator (TCSC) using Strength Pareto Evolutionary Algorithm (SPEA). The TCSC parameters designing problem is converted to an optimization problem with the multi-objective function including the desired damping factor and the desired damping ratio of the power system modes, which is solved by a SPEA ...

2001
W. Decking

The TESLA linear collider needs damping rings to achieve the required small transverse emittances for optimum luminosity. Due to the TESLA pulse structure the damping rings are about 17 km long. The resulting unusual ratio of circumference to energy leads to a large space charge tune shift. The originally proposed damping ring [1] has thus been redesigned for higher energy. This paper describes...

Journal: :international journal of civil engineering 0
m. khanzadi g. ghodrati amiri g. abdollahzadeh darzi

according to performance-based seismic design method by using energy concept, in this paper it is tried to investigate the duration and damping effects on elastic input energy due to strong ground motions. based on reliable iranian earthquake records in four types of soils, structures were analyzed and equivalent velocity spectra were computed by using input energy. these spectra were normalize...

2014
J. H. Lee J. Kim Joon-Hyun Lee

A technique to identifY damping parameters directly from the frequency response functions (FRF) in matrix forms has been developed. Furtl1ermore, the technique identifies the viscous damping and structural damping coefficients separately. The technique provides more accurate damping values because it does not rely on the information of the natural modes as in the conventional method. The dampin...

1995
I. F. Ginzburg

We study μ+μ− collision with production of some state F (for example, F = W+) and (eν̄) system with the effective mass, which is less than muon mass. In this case the momentum k, transferred from μ to eν̄ system (virtual neutrino momentum), can be time–like. The path of integration over k2 goes through the pole at k2 = 0. It gives divergent cross section. This divergence disappears if the finite ...

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