نتایج جستجو برای: wave factor

تعداد نتایج: 1052460  

Journal: :international journal of industrial mathematics 2015
a. mahmoud ‎aly‎‎

‎the water wave generation by wave paddle and a freely falling rigid body are examined by using an incompressible smoothed particle hydrodynamics (isph)‎. ‎in the current isph method‎, ‎the pressure was evaluated by solving pressure poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure poisson equation contains both of divergence free ve...

Journal: :international journal of marine science and engineering 2012
a. h. javid m. abbaspour s. a. mirbagheri h. janfeshanaraghi

the study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. in this study, the propagation of static ...

2004
N. D. Drummond M. D. Towler

Many-electron wave functions may be accurately and compactly approximated by a product of a small number of Slater determinants and a positive Jastrow correlation factor. The Jastrow factor is an explicit function of the electronelectron separations, so that expectation values calculated with a Slater-Jastrow wave function do not separate in the electron coordinates. Nevertheless, the variation...

2007
ZHAO YANLEI JIANG ZHIHAI LIU WEI

This paper introduces a high precise direct current (DC) negative high voltage power supply. The supply’s output voltage is 25kV and its maximal output current is 100mA. The power supply uses BOOST converter for power factor correction and voltage regulation. It converts DC to high frequency (HF) alternating current (AC) square wave with phase-shifted full bridge. The voltage of the AC square w...

Journal: :Hypertension 2010
Heikki Aatola Nina Hutri-Kähönen Markus Juonala Jorma S A Viikari Janne Hulkkonen Tomi Laitinen Leena Taittonen Terho Lehtimäki Olli T Raitakari Mika Kähönen

Limited and partly controversial data are available regarding the relationship of arterial pulse wave velocity and childhood cardiovascular risk factors. We studied how risk factors identified in childhood and adulthood predict pulse wave velocity assessed in adulthood. The study cohort consisted of 1691 white adults aged 30 to 45 years who had risk factor data available since childhood. Pulse ...

2010
T. Windisch K. Rahbarnia O. Grulke T. Klinger

A large-area planar spiral antenna has been installed on the linear laboratory device VINETA. For low radio-frequency (RF ) powers the induction coil is operated in the inductive discharge mode with typical plasma densities of n ≈ 1 · 10 m and electron temperatures of Te ≈ 5 eV. At higher RFpowers a transition to the helicon wave sustained discharge mode is observed, in which the density increa...

2012
E. Infantes

We demonstrate the utility of using the equivalent bottom roughness for calculating the friction factor and the drag coefficient of a seagrass meadow for conditions in which the meadow height is small compared to the water depth. Wave attenuation induced by the seagrass Posidonia oceanica is evaluated using field data from bottom-mounted acoustic doppler veloci meters (ADVs). Using the data fro...

Journal: :Hypertension 2008
Renate Schnabel Martin G Larson Josée Dupuis Kathryn L Lunetta Izabella Lipinska James B Meigs Xiaoyan Yin Jian Rong Joseph A Vita Christopher Newton-Cheh Daniel Levy John F Keaney Ramachandran S Vasan Gary F Mitchell Emelia J Benjamin

Inflammation causes vascular dysfunction and perpetuates proatherosclerotic processes. We hypothesized that a broad panel of inflammatory biomarkers and single nucleotide polymorphisms in inflammatory genes is associated with vascular stiffness. We assessed 12 circulating inflammatory biomarkers (C-reactive protein, fibrinogen, interleukin-6, intercellular adhesion molecule-1, lipoprotein-assoc...

2017
Rafael Luz Espindola Alex Maurício Araújo

This paper presents a characterization of the wave power resource and an analysis of the wave power output for three (AquaBuoy, Pelamis and Wave Dragon) different wave energy converters (WEC) over the Brazilian offshore. To do so it used a 35 years reanalysis database from the ERA-Interim project. Annual and seasonal statistical analyzes of significant height and energy period were performed, a...

1997
Chien-Jung Huang C. J. Umrigar M. P. Nightingale

Compact and accurate wave functions can be constructed by quantum Monte Carlo methods. Typically, these wave functions consist of a sum of a small number of Slater determinants multiplied by a Jastrow factor. In this paper we study the importance of including high-order, nucleus-three-electron correlations in the Jastrow factor. An efficient algorithm based on the theory of invariants is used t...

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