نتایج جستجو برای: staggered truss framing

تعداد نتایج: 20184  

2006
Jon A. Bailey

In staggered QCD, many staggered baryons correspond to each physical state. Taste violations lift the continuum degeneracies of the baryons and introduce nonzero off-diagonal elements in the mass matrix. While presenting no problem of principle, these splittings and mixings complicate analyses of simulation results. However, in special cases operators with good SU(3) quantum numbers can be used...

Journal: :Physical review letters 2007
Andreas Kreisel Nils Hasselmann Peter Kopietz

The emergence of a finite staggered magnetization in quantum Heisenberg antiferromagnets subject to a uniform magnetic field can be viewed as Bose-Einstein condensation of magnons. Using nonperturbative results for the infrared behavior of the interacting Bose gas, we present exact results for the staggered spin-spin correlation functions of quantum antiferromagnets in a magnetic field at zero ...

2006
Roland Hoffmann Anna Hasenfratz

We measure the low lying eigenmodes of an overlap Dirac operator on 2–flavor staggered configurations. By comparing the eigenmode distribution to the predictions of Random Matrix Theory we test to what accuracy staggered configurations describe continuum QCD. The agreement between the numerical data and RMT implies that at our quark mass values the lattice artifacts of the staggered configurati...

2015
Maria-Evgenia G. Rossi Fragkiskos D. Malliaros Michalis Vazirgiannis

Understanding and controlling spreading dynamics in networks presupposes the identification of those influential nodes that will trigger an efficient information diffusion. It has been shown that the best spreaders are the ones located in the core of the network – as produced by the k-core decomposition. In this paper we further refine the set of the most influential nodes, showing that the nod...

2015
Maria-Evgenia G. Rossi Fragkiskos D. Malliaros Michalis Vazirgiannis

Understanding and controlling spreading dynamics in networks presupposes the identification of those influential nodes that will trigger an efficient information diffusion. It has been shown that the best spreaders are the ones located in the core of the network – as produced by the k-core decomposition. In this paper we further refine the set of the most influential nodes, showing that the nod...

2007
Y.-Q. Bai

We consider semidefinite programming (SDP) formulations of certain truss topology optimization problems, where a lower bound is imposed on the fundamental frequency of vibration of the truss structure. These SDP formulations were introduced in: [M. Ohsaki, K. Fujisawa, N. Katoh and Y. Kanno, Semi-definite programming for topology optimization of trusses under multiple eigenvalue constraints, Co...

2003
James C. Osborn

We discuss the construction of a chiral random matrix model for staggered fermions. This model includes O(a) corrections to the continuum limit of staggered fermions and is related to the zero momentum limit of the Lee-Sharpe Lagrangian for staggered fermions. The naive construction based on a specific expansion in lattice spacing (a) of the Dirac matrix produces the term which gives the domina...

2006
Anna Hasenfratz Roland Hoffmann

We measure the low lying eigenmodes of an overlap Dirac operator on 2–flavor staggered configurations. By comparing the eigenmode distribution to the predictions of Random Matrix Theory we test to what accuracy staggered configurations describe continuum QCD. The agreement between the numerical data and RMT implies that at our quark mass values the lattice artifacts of the staggered configurati...

2013
Erik C. Nisbet P. S. Hart Teresa Myers Morgan Ellithorpe

Framing scholarship on policy issues has primarily focused on how competitive message environments alter framing effects or how individual differences moderate the impact of frames. This study combines both of these focal areas by examining how individual open/closed-mindedness moderates framing effects about climate change within competitive and noncompetitive framing contexts. Contrary to pre...

Journal: :Social science & medicine 2006
Patricia A Collins Julia Abelson Heather Pyman John N Lavis

News media effects on their audiences are complex. Four commonly cited effects are: informing audiences; agenda-setting; framing; and persuading. The release in autumn 2002 of two reports on options for reforming Canada's healthcare system attracted widespread media attention. We explored the potential for each of the four media effects by examining Canadian newspaper representation of this hea...

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