Results 21 to 30 of about 338,726 (289)

On the Origin of Model Relations among Transverse-Momentum Dependent Parton Distributions [PDF]

open access: yes, 2011
Transverse-momentum dependent parton distributions (TMDs) are studied in the framework of quark models. In particular, quark-model relations among TMDs are reviewed, elucidating their physical origin in terms of the quark-spin structure in the nucleon ...
Lorce, C., Pasquini, B.
core   +2 more sources

Higher Derivatives and Canonical Formalisms [PDF]

open access: yesProgress of Theoretical Physics, 1996
Path integral expressions for three canonical formalisms -- Ostrogradski's one, constrained one and generalized one -- of higher-derivative theories are given. For each fomalism we consider both nonsingular and singular cases. It is shown that three formalisms share the same path integral expressions. In paticular it is pointed out that the generalized
Nakamura, Takao, Hamamoto, Shinji
openaire   +2 more sources

Modernity and morality in Habermas's discourse ethics [PDF]

open access: yes, 2000
Discourse ethics is originally conceived as a programme of philosophical justification of morality. This depends on the formal derivation of the moral principle (U) from non-moral principles. The moral theory is supposed to fall out of a pragmatic theory
Finlayson, James Gordon
core   +1 more source

La derivación verbal apreciativa en español

open access: yesEstudios de Lingüística, 1998
This paper analyzes the verb formation by means of the called, in Spanish, affixal «apreciativos». The paper is split into three subparts that are occupied by others so man y facets of this type of derivation.
Antonio Rifón Sánchez
doaj   +1 more source

Axisymmetric flow of ideal fluid moving in a narrow domain: a study of the axisymmetric hydrostatic Euler equations

open access: yes, 2015
In this article we will introduce a new model to describe the leading order behavior of an ideal and axisymmetric fluid moving in a very narrow domain.
Strain, Robert M., Wong, Tak Kwong
core   +1 more source

Higher Derivative Gravity in Generalized Covariant Derivative Formalism [PDF]

open access: yesProgress of Theoretical Physics, 1999
Field strength (‘curvature’ tensor in mathematical terms) is one of the key concepts in gauge theory. To develop a new unified theory of the gauge and Higgs fields, a “field strength” is introduced for the Higgs field by generalizing covariant derivatives for chiral multi-spinor fields so as to include the Dirac γ-matrices.
I. S. Sogami, H. Tanaka, T. Shirafuji
openaire   +1 more source

A Petri Net Strategy for Fault Diagnosis and Location in Power Distribution Systems to Prevent Local Power Shortages

open access: yesIEEE Access
A power distribution system is usually composed of a number of distribution substations and distribution lines, where the latter are fragile and often suffer from faults, leading to serious local power shortages.
Zhongyuan Jiang, Huan Wang, Wenjie Wang
doaj   +1 more source

A Kinetic Perspective on k - ϵ Turbulence Model and Corresponding Entropy Production

open access: yesEntropy, 2016
In this paper, we present an alternative derivation of the entropy production in turbulent flows, based on a formal analogy with the kinetic theory of rarefied gas.
Pietro Asinari   +2 more
doaj   +1 more source

Continuum limit of self-driven particles with orientation interaction [PDF]

open access: yes, 2007
We consider the discrete Couzin-Vicsek algorithm (CVA), which describes the interactions of individuals among animal societies such as fish schools.
Camazine S.   +6 more
core   +9 more sources

Formal derivation of a pattern matching algorithm

open access: yesScience of Computer Programming, 1989
The functional version of the Knuth-Morris-Pratt pattern matching algorithm is formally derived using the Bird's calculus of lists. The derivation process is thoroughly explained, various solving strategies are discussed, the paper is self-contained.
Bird, R, Gibbons, J, Jones, G
openaire   +3 more sources

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