نتایج جستجو برای: confinement

تعداد نتایج: 20233  

Journal: :international journal of civil engineering 0
reza abbasnia department of civil engineering, iran university of science and technology, tehran, iran neda mirzadeh iran university of science and technology kamyar kildashti iran university of science and technology

in recent years, different damage indexes have been introduced in engineering literature. the most prominent one among other counterparts is the 1985 park and ang's damage index (dipa), which demonstrates well calibration against experimental results. hence, it has traditionally had broad application in the field of structural engineering. commonly, in dipa relevant parameters are assessed...

2008
L. G. KOVACS

Problem 24 of Hanna Neumann's book [3] reads: Does there exist, for a given integer n > 0, a Cross variety that is generated by its ^-generator groups and contains (&+w)-generator critical groups? In such a variety, is every critical group that needs more than k generators a factor of a kgenerator critical group, or at least of the free group of rank A? I n a recent paper [1], R. G. Burns point...

Journal: :Comput. Graph. Forum 2013
Shengfeng He Rynson W. H. Lau

Capturing fine details of turbulence on a coarse grid is one of the main tasks in real-time fluid simulation. Existing methods for doing this have various limitations. In this paper, we propose a new turbulence method that uses a refined second vorticity confinement method, referred to as robust second vorticity confinement, and a synthesis scheme to create highly turbulent effects from coarse ...

Journal: :journal of mining and environment 2015
r. rahmannejad a. kargar v. maazallahi e. ghotbi-ravandi

the ground reaction curve (grc) is a vital component of the convergence-confinement method, which possesses many applications in the underground space designs. it defines a relation between the tunnel wall deformations and the ground pressure acting on the tunnel walls. generally, grc includes descending and ascending branches. according to many researchers, the descending branch trend for the ...

In this article, a novel structure of photonic crystal fiber with nearly zero ultra-flattened chromatic dispersion and ultra-low confinement loss is presented. By replacing the circular air-holes of two first rings with the elliptical air-holes, a fiber with outstanding features of chromatic dispersion and confinement loss is designed. The proposed structure is optimized for operating in a wide...

M. Pourmahyabadi,

In this article, Hill Climbing (HC) and Estimation of Distribution Algorithm (EDA) are integrated to produce a hybrid intelligent algorithm for design of endlessly Single Mode Photonic Crystal Fibers (SMPCFs) structure with desired properties over the C communication band. In order to analyzing the fiber components, Finite Difference Frequency Domain (FDFD) solver is applied. In addition, a spe...

Journal: :journal of nanostructures 2012
z. ahangari m. fathipour

a comprehensive study of schottky barrier mosfet (sbmosfet) scaling issue is performed to determine the role of wafer orientation and structural parameters on the performance of this device within non-equilibrium green's function formalism. quantum confinement increases the effective schottky barrier height (sbh). (100) orientation provides lower effective schottky barrier height in comparison ...

A saddle point variational (SPV ) method was applied to the Dirac equation as an example of a fully relativistic equation with both negative and positive energy solutions. The effect of the negative energy states was mitigated by maximizing the energy with respect to a relevant parameter while at the same time minimizing it with respect to another parameter in the wave function. The Cornell pot...

2007
D. J. Den Hartog J.-W. Ahn A. F. Almagri J. K. Anderson A. D. Beklemishev A. P. Blair F. Bonomo M. T. Borchardt D. L. Brower D. R. Burke M. Cengher B. E. Chapman S. Choi D. J. Clayton W. A. Cox S. K. Combs D. Craig H. D. Cummings V. I. Davydenko D. R. Demers B. H. Deng W. X. Ding F. Ebrahimi D. A. Ennis G. Fiksel C. Foust C. B. Forest P. Franz L. Frassinetti S. Gangadhara J. A. Goetz R. W. Harvey D. J. Holly B. F. Hudson A. A. Ivanov M. C. Kaufman A. V. Kuritsyn A. A. Lizunov T. W. Lovell R. M. Magee L. Marrelli P. Martin K. J. McCollam M. C. Miller V. V. Mirnov P. D. Nonn R. O’Connell S. P. Oliva P. Piovesan S. C. Prager I. Predebon J. A. Reusch J. S. Sarff V. A. Svidzinski

In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In stan...

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