نتایج جستجو برای: double panel structures

تعداد نتایج: 766111  

Journal: :international journal of marine science and engineering 2011
a. a. bidokhti a. shekarbaghani

ocean waters often show layered structures especially where exchange flow between two basins occurs. these structures are often attributed to processes such as double.diffusive convection, internal waves, turbulent modulated mixing. in this paper by examining the vertical structures of temperature, salinity and density, of the middle parts of caspian sea it is shown that such layered structure ...

2006
ALBAN THOMAS Alban Thomas

This paper presents an extension of fixed effects binary choice models for panel data, to the case of heterogeneous linear trends. Two estimators are proposed: a Logit estimator based on double conditioning and a semiparametric, smoothed maximum score estimator based on double differences. We investigate small-sample properties of these estimators with a Monte Carlo simulation experiment, and c...

Journal: :Proc. Meetings on Acoustics 2016
Teresa Bravo Cédric Maury Cédric Pinhède Carlos de la Colina

Turbulent Boundary Layer (TBL) induced noise is one of the dominant noise sources in modern aircraft, where classical materials are progressively being substituted by fiber-reinforced polymers. Although passive methods continue to be developed due to their straight realization in practical flight applications, they add additional weight and are also accompanied by some degradation in high-lift ...

2016
M. A. de Graaf A. R. van Rosendael L. J. Kroft H. W. Vliegen M. G. Hazekamp J. J. Bax A. J. Scholte

Michiel A. de Graaf is supported by a research grant from the Interuniversity Cardiology Institute of the Netherlands A 41-year old woman presented at the emergency department because of collapse during running. Coronary computed tomography angiography (CTA) showed no atherosclerosis (Fig. 1). However, as demonstrated by the double oblique view of the sinus of Valsalva in Panel A and 3D-renderi...

1999
C. L. TSAI S. C. PARK W. T. CHENG

Welding thin-plate panel structures often results in warping of the panels. Several mitigation methods, including preheating and prestressing the plates during assembly, have been investigated and used by some fabricators. This paper studies the distortion mechanisms and the effect of welding sequence on panel distortion. In this study, distortion behaviors, including local plate bending and bu...

2013
James A Foster Guglielmo S Aglietti

Multifunctional structures are a potentially disruptive technology that allows for significant mass savings on spacecraft. The specific concept addressed herein is that of a multifunctional power structure. In this paper, a parametric optimisation of the design of such a structure that uses commercially available battery cells is presented. Using numerical modelling, it was found that there exi...

Journal: :journal of sciences, islamic republic of iran 2013
h. mahdavian rad a. niknam

let  be a banach algebra. let  be linear mappings on . first we demonstrate a theorem concerning the continuity of double derivations; especially that all of -double derivations are continuous on semi-simple banach algebras, in certain case. afterwards we define a new vocabulary called “-higher double derivation” and present a relation between this subject and derivations and finally give some ...

2009
Katherine Liapi Jinman Kim

Tensegrity grids composed of tensegrity units that form double layer cable nets of single or double curvature can find applications in architecture as surface structures. In this paper a parametric process for the geometric configuration and representation of double layer tensegrity structures of helical shape is discussed. Departing from the geometric construction process, an algorithm that fa...

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