Results 71 to 80 of about 387,846 (192)

A new approach to cosmological perturbations in f(R) models

, 2012
We propose an analytic procedure that allows to determine quantitatively the deviation in the behavior of cosmological perturbations between a given f(R) modified gravity model and a LCDM reference model. Our method allows to study structure formation in
, A. De Felice, A. Hojjati, A. Raccanelli ., A.G. Riess ., D. Larson ., D.J. Eisenstein, Daniele Bertacca, E. Bertschinger, E. Bertschinger, F. Bernardeau, H. Motohashi, J. Yoo, J. Zuntz, J.C. Bueno Sanchez, K.N. Ananda, L. Amendola, M. Abdelwahab, N. Bartolo, N. Bartolo, N. Bartolo, N. Bartolo, N. Lanahan-Tremblay, Nicola Bartolo, O. Lahav, R. Amanullah ., R. Maartens, S. Baghram, S. Capozziello, S. Capozziello, S. Carloni, S. Matarrese, S. Nojiri, S. Tsujikawa, Sabino Matarrese, SDSS collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Baldauf, T. Tatekawa, V. Faraoni, V. Paschalidis, WMAP collaboration   +42 more
core   +1 more source

A quasi static iterative method for inductor parameter [PDF]

, 2011
A low frequency algorithm designated for the calculation of the magnetic and the electric energies and the ohmic losses of passive components has been developed. These quantities can be used to achieve the inductance, the capacitance, the resistance, and the Q-value of the inductor at low frequencies. The method is based on an iterative scheme in which
Johannesson, Peter, Karlsson, Anders
openaire   +1 more source

Design of Integral Controllers for Nonlinear Systems Governed by Scalar Hyperbolic Partial Differential Equations

, 2017
The paper deals with the control and regulation by integral controllers forthe nonlinear systems governed by scalar quasi-linear hyperbolic partial differentialequations.
Andrieu, Vincent, Trinh, Ngoc-Tu, Xu, Cheng-Zhong   +2 more
core   +3 more sources

Compressive properties of aluminum foams by gas injection method [PDF]

China Foundry, 2012
The compressive properties of aluminum foams by gas injection method are investigated under both quasi-static and dynamic compressive loads in this paper.
Zhang Huiming, Chen Xiang, Fan Xueliu
doaj  

Finite-rate water condensation in combustion-heated wind tunnels [PDF]

A quasi-one-dimensional method for computing finite rate nucleation and droplet growth of water in a supersonic expansion of combustion products is presented. Sample computations are included for the Langley 8 foot High Temperature Tunnel, but the method
Erickson, Wayne D., Mall, Gerald H., Prabhu, Ramadas K.   +2 more
core   +1 more source

Modify-and-Forward for Securing Cooperative Relay Communications

, 2014
We proposed a new physical layer technique that can enhance the security of cooperative relay communications. The proposed approach modifies the decoded message at the relay according to the unique channel state between the relay and the destination such
Kim, Sang Wu
core   +1 more source

Large deformation analysis using a quasi-static material point method. [PDF]

, 2008
The Finite Element Method (FEM) has become the standard tool for the analysis of a wide range of solid mechanics problems. However, the underlying structure of a classical updated Lagrangian FEM is not well suited for the treatment of large deformation ...
Benz, T., Beuth, L., Vermeer, Pieter A., Więckowski, Zdzisław   +3 more
core  

Dynamic Simulation of Seismogenic-Fault-Induced Rupture in Overlying Soil

Infrastructures
Accurate prediction of surface rupture induced by seismogenic fault displacement is essential for the seismic safety assessment of major engineering projects. Most existing numerical simulations adopt quasi-static approaches, in which the effect of fault
Chang Wang, Xiaojun Li, Mianshui Rong, Xiaoyan Sun, Weiqing Meng   +4 more
doaj   +1 more source

An experimental method of measuring the quasi-static and dynamic confined behaviour of PMMA

EPJ Web of Conferences, 2010
A testing device is presented for the experimental study of the confined behaviour of PMMA in compression under quasi-static loading or at high strain-rates.
Siad L., Rusinek A., Nasraoui M., Forquin P.   +3 more
doaj   +1 more source

SIMULATION ACCURACY STUDY ON THE STRENGTH TEST OF SEATBELTS ANCHORAGES BASED ON LS-DYNA

Jixie qiangdu, 2015
As to the strength test of seatbelts anchorages which is a quasi-static problem,through comparative analysis of central difference method（ explicit integration） and Newmark method（ implicit integration） in elastodynamics,this paper used explicit solution
ZHENG SongLin, WANG XiaoLong, LI YingJun, AN ChaoQun   +3 more
doaj