804 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 Hermite–Hadamard 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 Hermite–Hadamard type inequalities for functions whose nth derivatives are convex
Dunkl-Pauli Equation
The Pauli equation, an important equation of quantum mechanics, allows us to
study the dynamics of spin- particles. The Dunkl derivative, when used
instead of the ordinary derivative, allows us to obtain parity-dependent
solutions. In this work, we consider a two-dimensional nonrelativistic
spin- particle system in the presence of an external magnetic field, and
we explore the system's dynamics by solving the Pauli equation in the Dunkl
formalism analytically. Then, we assume the system to be in thermal
equilibrium, so that, we examine various thermal quantities of the system.Comment: 10 pages, 8 figure
Extended uncertainty principle and Van der Waals black holes
In this manuscript, we investigate the extended uncertainty principle (EUP)
effects on the Van der Waals (VdW) black holes whose thermal quantities mimic
the VdW liquid. We find that the considered formalism imposes an upper bound on
the event horizon radius. Thus, the mass, Hawking temperature, and heat
capacity become physically meaningful within a certain range of event horizon
radii. At a large event horizon radius the black hole has a remnant. Whether
the VdW black hole is stable or not depends on the black hole parameters.Comment: 13 pages, 10 figure
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
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
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 ˃0.05) 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 x106 /mL vs. 328.90 x106 /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
- …