703 research outputs found
Fractional Ostrowski type inequalities for functions whose derivatives are s-preinvex
In this paper, we establish a new integral identity, and then we derive some new fractional Ostrowski type inequalities for functions whose derivatives are s-preinvexpeerReviewe
Some new HermiteâHadamard type inequalities for functions whose nth derivatives are convex
We first create an integral identity for n-times differentiable functions. Relying on this identity, we establish some new HermiteâHadamard type inequalities for functions whose nth derivatives are convex
Neural Networks for Synthesis and Optimization of Antenna Arrays
This paper describes a usual application of back-propagation neural networks for synthesis and optimization of antenna array. The neural network is able to model and to optimize the antennas arrays, by acting on radioelectric or geometric parameters and by taking into account predetermined general criteria. The neural network allows not only establishing important analytical equations for the optimization step, but also a great flexibility between the system parameters in input and output. This step of optimization becomes then possible due to the explicit relation given by the neural network. According to different formulations of the synthesis problem such as acting on the feed law (amplitude and/or phase) and/or space position of the radiating sources, results on antennas arrays synthesis and optimization by neural networks are presented and discussed. However ANN is able to generate very fast the results of synthesis comparing to other approaches
Artificial Neural Networks to aid defferentiation of Benign and Malignant Breast Tumors by Microwave Imaging
In this paper, we propose a method for discriminating between malignant and benign breast tumors, by exploiting the dielectric properties of these tumors. The proposed technique is based on neural networks approach. Simulation results are presented on a model developed using EM simulator (CST)
Fractures de LâextrĂ©mitĂ© Inferieure du radius: Une Ă©tude rĂ©trospective comparative de technique KAPANDJI Vs les autres techniques du radius distal. A propos de 52 cas
Les fractures de lâextrĂ©mitĂ© distale du radius sont des fractures frĂ©quentes, du sujet jeune au sujet ostĂ©oporotique. Nous avons, pour cela, rĂ©alisĂ© une Ă©tude rĂ©trospective. 52 patients, de plus de 16 ans, victimes dâune fracture articulaire ou extra-articulaire du radius distal ; traitĂ©s chirurgicalement ont Ă©tĂ© inclus dans cette Ă©tude et rĂ©partis comme suit :âą Groupe A : patients traitĂ©s par embrochage de type Kapandjiâą Groupe B : patients traitĂ©s par plaque vissĂ©e verrouillĂ©eâą Groupe C : patients traitĂ©s par embrochage classiquesâą Groupe D : patients traitĂ©s par embrochage type HK 2âą Groupe E : patients traitĂ©s par fixateurs externesDans notre Ă©tude la moyenne dâĂąge Ă©tait de 39 ans et le sexe masculin Ă©tait prĂ©dominantLes patients Ă©taient opĂ©rĂ©s et revus en consultation entre 3 et 12 mois. Chaque patient Ă©tait Ă©valuĂ© par le score de DASH, et une radiographie du poignet de face et de profil Ă©tait Ă©galement rĂ©alisĂ©e. Les fractures type A2 selon la classification AO Ă©tait dominante avec un pourcentage de 54% des cas suivie par le type C1 17%, puis le type A3 Ă 9% des cas ; Pour la classification de CASTAING câest le type 2 qui est le plus reprĂ©sentĂ© soit 53% des cas.Discussion : Lâutilisation de la technique HK2 dans le traitement des fractures du radius distal, nous a donnĂ© de meilleurs rĂ©sultats par rapport Ă lâostĂ©osynthĂšse par embrochage de type Kapandji.Les rĂ©sultats de notre Ă©tude restent similaires Ă ceux des autres Ă©tudes de la littĂ©rature recommandant le recours Ă cette technique dans ce type de fracture.Les fractures de lâextrĂ©mitĂ© distale du radius sont des fractures frĂ©quentes, du sujet jeune au sujet ostĂ©oporotique. Nous avons, pour cela, rĂ©alisĂ© une Ă©tude rĂ©trospective. 52 patients, de plus de 16 ans, victimes dâune fracture articulaire ou extra-articulaire du radius distal ; traitĂ©s chirurgicalement ont Ă©tĂ© inclus dans cette Ă©tude et rĂ©partis comme suit :âą Groupe A : patients traitĂ©s par embrochage de type Kapandjiâą Groupe B : patients traitĂ©s par plaque vissĂ©e verrouillĂ©eâą Groupe C : patients traitĂ©s par embrochage classiquesâą Groupe D : patients traitĂ©s par embrochage type HK 2âą Groupe E : patients traitĂ©s par fixateurs externesDans notre Ă©tude la moyenne dâĂąge Ă©tait de 39 ans et le sexe masculin Ă©tait prĂ©dominantLes patients Ă©taient opĂ©rĂ©s et revus en consultation entre 3 et 12 mois. Chaque patient Ă©tait Ă©valuĂ© par le score de DASH, et une radiographie du poignet de face et de profil Ă©tait Ă©galement rĂ©alisĂ©e. Les fractures type A2 selon la classification AO Ă©tait dominante avec un pourcentage de 54% des cas suivie par le type C1 17%, puis le type A3 Ă 9% des cas ; Pour la classification de CASTAING câest le type 2 qui est le plus reprĂ©sentĂ© soit 53% des cas.Discussion : Lâutilisation de la technique HK2 dans le traitement des fractures du radius distal, nous a donnĂ© de meilleurs rĂ©sultats par rapport Ă lâostĂ©osynthĂšse par embrochage de type Kapandji.Les rĂ©sultats de notre Ă©tude restent similaires Ă ceux des autres Ă©tudes de la littĂ©rature recommandant le recours Ă cette technique dans ce type de fracture
Effects due to a scalar coupling on the particle-antiparticle production in the Duffin-Kemmer-Petiau theory
The Duffin-Kemmer-Petiau formalism with vector and scalar potentials is used
to point out a few misconceptions diffused in the literature. It is explicitly
shown that the scalar coupling makes the DKP formalism not equivalent to the
Klein-Gordon formalism or to the Proca formalism, and that the spin-1 sector of
the DKP theory looks formally like the spin-0 sector. With proper boundary
conditions, scattering of massive bosons in an arbitrary mixed vector-scalar
square step potential is explored in a simple way and effects due to the scalar
coupling on the particle-antiparticle production and localization of bosons are
analyzed in some detail
Input Frequencies Optimization Based on Genetic Algorithm for Maximal Mutual Information
Among encountered problems in digital and analog communications, there is mismatch between canals and sources. As
regards theory of information, unfortunately, this mismatch found expression in information loss during transfer to
reception side. In order to settle the problem, the solution consists in adjustment of probability law at source so that we
maximize the mean mutual information. For a little number of symbols, either at emission or at reception, the work can
be done analytically with some difficulties. Unfortunately, the problem have tendency to become more and more difficult
and complicated as number of symbols increases. In this case and as alternative, we propose a non-traditional
optimization method, namely genetic algorithm, which will express, with regard to our problem, all its efficiency through
this paper with some conclusive applications
EVALUATION OF SEMEN QUALITY IN RABBIT OF LOCAL ALGERIAN POPULATION AND SYNTHETIC LINE IN THE SUMMER SEASON: A COMPARATIVE STUDY
The aim of our study was to compare the libido and semen characteristics in 24 rabbits of local and synthetic line during summer season. Results showed that both breeds had similar (p Ë0.05) libido (13.92 vs 16.85 s). Gel free volume (0.88 vs. 0.87 mL), pH (7.51 vs. 7.65), and live sperm (56.21 vs. 55.88%) were similar. Local population had higher semen concentration (398.50 x106Â /mL vs. 328.90 x106Â /mL) and percentage of abnormal spermatozoa (36.54 vs 30.28%). Massal and individual motility (p=0.006 and p=0.008) were significantly increased in local population. Kinetic traits for Local population were significantly greater (P<0.05), except for VCL, ALH and BCF. We conclude that, rabbit bucks of local population had a good ability of adaptation to produce in a hot climate
Spectrum of the Relativistic Particles in Various Potentials
We extend the notion of Dirac oscillator in two dimensions, to construct a
set of potentials. These potentials becomes exactly and quasi-exactly solvable
potentials of non-relativistic quantum mechanics when they are transformed into
a Schr\"{o}dinger-like equation. For the exactly solvable potentials,
eigenvalues are calculated and eigenfunctions are given by confluent
hypergeometric functions. It is shown that, our formulation also leads to the
study of those potentials in the framework of the supersymmetric quantum
mechanics
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