Results 51 to 60 of about 86,353 (166)

Inference of demographic history from genealogical trees using reversible jump Markov chain Monte Carlo

open access: yesBMC Evolutionary Biology, 2005
Background Coalescent theory is a general framework to model genetic variation in a population. Specifically, it allows inference about population parameters from sampled DNA sequences.
Fahrmeir Ludwig   +2 more
doaj   +1 more source

Solving Fuzzy-Parametric Linear Programming Problems

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
The fuzzy sets theory has been applied in many fields, such as operations research, control theory and management sciences, etc. In particular, an application of this theory in decision making problem is linear programming problems with fuzzy ...
Iden Hassan, Nabeel H. Saeed
doaj  

THEORY OF PARAMETRIC ACOUSTIC ARRAYS

open access: yesLe Journal de Physique Colloques, 1979
The paper is a contribution to the theory of the parametric acoustic array formed by the nonlinear interaction of sound waves in a thermoviscous fluid. The source of the primary waves is a circular piston, and emphasis is put on an analysis of the farfield properties of the generated difference frequency sound field from two sound beams.
Hobaek, H., Tjøtta, S.
openaire   +2 more sources

Directional Loudspeaker Using a Parametric Array

open access: yesActa Polytechnica, 2006
The theory for sound reproduction of parametric arrays is based on nonlinear acoustics. Due to the nonlinearity of the air, a finite amplitude ultrasound interacts with itself and generates audible secondary waves in the sound beam.
A. Ritty
doaj  

Case variation in coordination: Danish vs. Faroese

open access: yesNordlyd: Tromsø University Working Papers on Language & Linguistics, 2009
This paper is primarily concerned with inter- and intra-individually variable case-form mismatches inside coordinate determiner phrases (CoDPs). For English, the phenomenon is both socially salient (e.g., O'Conner & Kellerman 2009, among many others) and
Jeffrey K. Parrott
doaj   +1 more source

Parametric matrix models

open access: yesNature Communications
We present a general class of machine learning algorithms called parametric matrix models. In contrast with most existing machine learning models that imitate the biology of neurons, parametric matrix models use matrix equations that emulate physical ...
Patrick Cook   +4 more
doaj   +1 more source

Theory and Experiment in Parametric Minimalism: The Case of Romance Negation

open access: yesRevista Linguística, 2017
This paper has a double goal: frst, it lays down and refnes the basic hypotheses on the parametric structure of Romance negative systems that were originally introduced in my presentation at the Venice GLOW Workshop on Dialect Variation in 1987 ...
Giuseppe Longobardi
doaj   +1 more source

Interpolating Parametric Array Theories

open access: yes
Parametric array theories are extensions of the quantifier free theory of arrays with relations that hold componentwise. We show that these theories retain rich (general and uniform) quantifier-free interpolation properties. Our results include the interpolation properties of the simple flat array fragment, which were left open in the literature.
Raya, Rodrigo, Ringeissen, Christophe
openaire   +2 more sources

Nonlocal vertices and analyticity: Landau equations and general Cutkosky rule

open access: yesJournal of High Energy Physics, 2018
We study the analyticity properties of amplitudes in theories with nonlocal vertices of the type occurring in string field theory and a wide class of nonlocal field theory models.
Paokuan Chin, E. T. Tomboulis
doaj   +1 more source

ANALYSIS OF FUZZY QUEUES: PARAMETRIC PROGRAMMING APPROACH BASED ON RANDOMNESS - FUZZINESS CONSISTENCY PRINCIPLE [PDF]

open access: yesJournal of Process Management and New Technologies, 2015
In this article, based on Zadeh’s extension principle we have apply the parametric programming approach to construct the membership functions of the performance measures when the interarrival time and the service time are fuzzy numbers based on the ...
Dhruba Das, Hemanta K. Baruah
doaj  

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