다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Statistical physics has proven to be a fruitful framework to describe phenomena outside the realm of traditional physics. Recent years have witnessed an attempt by physicists to study collective phenomena emerging from the interactions of individuals as elementary units in social structures. A wide list of topics are reviewed ranging from opinion and cultural and language dynamics to crowd behavior, hierarchy formation, human dynamics, and social spreading. The connections between these problems and other, more traditional, topics of statistical physics are highlighted. Comparison of model results with empirical data from social systems are also emphasized.

Statistical physics of social dynamics

We have studied the three quark system in a relativized version of the quark potential model with chromodynamics. With parameters consistent with those of an analogous study of meson spectroscopy we obtain a successful description of the spectrum of baryons. The model naturally explains the apparent absence of spin‐orbit interactions in baryons.

Baryons in a relativized quark model with chromodynamics

Monthly Notices is one of the three largest general primary astronomical research publications. It is an international journal, published by the Royal Astronomical Society. This article 1 describes its publication policy and practice.

Monthly Notices of the Royal Astronomical Society

Using the finite-range regularization (FRR) of chiral effective field theory, the chiral extrapolation formula for the vector meson mass is derived for the case of partially-quenched QCD We re-analyze the dynamical fermion QCD data for the vector meson mass from the CP-PACS collaboration A global fit, including finite lattice spacing effects, of all 16 of their ensembles is performed We study the FRR method together with a naive polynomial approach and find excellent agreement ({approx}1%) with the experimental value of M{sub {rho}} from the former approach These results are extended to the case of the nucleon mass

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Chiral and continuum extrapolation of partially-quenched hadron masses

We examine a recently suggested, novel method for evaluating the contribution of the neutron-proton mass difference to charge-symmetry breaking in then-p system. It is shown that if all terms of first-order in the mass difference are consistently retained the proposal is equivalent to the conventional distorted-wave methods.

Discussion of a new formalism for charge-symmetry breaking in the neutron-proton system

Pions in isospin asymmetric nuclei

Overview of the discussion session on “what is a realistic picture of hadron structure?”

The spin-dependent structure function of the deuteron, g_1D, is calculated within a covariant framework. The off-shell structure of the bound nucleon gives corrections to the convolution model at a level of half a percent for x below 0.7, increasing to more than five percent at larger x. Overall, the dominant source of error comes from the lack of knowledge associated with the deuteron D-state, which may introduce an uncertainty in the neutron spin structure function, g_1n, extracted from deuterium data of up to ten percent for x around 0.2.

Anthony W. Thomas

Papers

Chiral and continuum extrapolation of partially-quenched hadron masses

Discussion of a new formalism for charge-symmetry breaking in the neutron-proton system

Pions in isospin asymmetric nuclei

Overview of the discussion session on “what is a realistic picture of hadron structure?”

Deep inelastic scattering from polarized deuterons