Spin pumping from finite-sized electron systems in ballistic and diffusive transport regimes
Kiminori Hattori
This paper presents a theory for spin pumping from finite-sized conductors at paramagnetic resonance. The spin generation and transport in the system exposed to a rotating magnetic field are analyzed by using the nonequilibrium Green's-function formalism, showing that a time-independent spin current ... [Phys. Rev. B 75, 205302 (2007)] published Wed May 2, 2007.
Prompt fission neutron emission in neutron and proton induced reactions at intermediate energies
V. A. Rubchenya
The generalized model for the description of the prompt fission neutron spectra and multiplicities at neutron and proton energies up to about 100 MeV is described. The three main emission mechanisms considered are the precompound emission, the pre-scission particle evaporation before the saddle poin ... [Phys. Rev. C 75, 054601 (2007)] published Wed May 2, 2007.
f[sub K]/f[sub pi] in full QCD with domain wall valence quarks
S. R. Beane, P. F. Bedaque, K. Orginos, and M. J. Savage NPLQCD Collaboration
We compute the ratio of pseudoscalar decay constants f[sub K]/f[sub pi] using domain-wall valence quarks and rooted improved Kogut-Susskind sea quarks, at a lattice spacing of b~0.125 fm. By employing continuum chiral perturbation theory, we extract the Gasser-Leutwyler low-energy constant L[sub 5] ... [Phys. Rev. D 75, 094501 (2007)] published Wed May 2, 2007.
Modeling percolation in high-aspect-ratio fiber systems. I. Soft-core versus hard-core models
L. Berhan and A. M. Sastry
Numerical and analytical studies of the onset of percolation in high-aspect-ratio fiber fiber systems such as nanotube reinforced polymers available in the literature have consistently modeled fibers as penetrable, straight, capped cylinders, also referred to as spherocylinders. In reality, however, ... [Phys. Rev. E 75, 041120 (2007)] published Mon Apr 30, 2007.
Modeling percolation in high-aspect-ratio fiber systems. II. The effect of waviness on the percolation onset
L. Berhan and A. M. Sastry
The onset of electrical percolation in nanotube-reinforced composites is often modeled by considering the geometric percolation of a system of penetrable, straight, rigid, capped cylinders, or spherocylinders, despite the fact that embedded nanotubes are not straight and do not penetrate one another ... [Phys. Rev. E 75, 041121 (2007)] published Mon Apr 30, 2007.
Domain-size distribution in a Poisson-Voronoi nucleation and growth transformation
Eloi Pineda, Victor Garrido, and Daniel Crespo
We present an analytical result for the evolution of the domain-size distribution during the growth of simultaneously nucleated domains. The final stage of this transformation is the well-known Poisson-Voronoi tessellation. The method can be easily extended to the calculation of the probability dist ... [Phys. Rev. E 75, 040107 (2007)] published Mon Apr 30, 2007.
Structural distortions in AlF[sub 3]: A test for density-functional methods
L. L. Boyer, M. J. Mehl, and Daniel Finkenstadt
The crystal structure of AlF[sub 3] at high temperatures has a simple cubic lattice. Below ~730 K, the structure transforms to a rhombohedral (alpha-phase) structure with R[overline 3]c symmetry due to an unstable R[sub 5][sup -] phonon. Density-functional based methods, from the least accurate rig ... [Phys. Rev. B 75, 132103 (2007)] published Mon Apr 30, 2007.
Power-law transient charge transport in a nonpolar liquid
F. Beunis, F. Strubbe, K. Neyts, and A. R. M. Verschueren
Transient current measurements in response to a voltage step can reveal a lot of information about the nature, the origin, and the properties of electrically charged species in nonpolar media. In situations where the influence of the charges on the electric field can be neglected, interpretation is ... [Appl. Phys. Lett. 90, 182103 (2007)] published Mon Apr 30, 2007.
Global nonambipolar flow: Plasma confinement where all electrons are lost to one boundary and all positive ions to another boundary
S. D. Baalrud, N. Hershkowitz, and B. Longmier
A new mode of plasma confinement is demonstrated in which essentially all positive ions leave the plasma to only one boundary while essentially all electrons are lost to a different boundary. Sheaths near the plasma boundaries are entirely responsible for this global nonambipolar flow. The bulk plas ... [Phys. Plasmas 14, 042109 (2007)] published Mon Apr 30, 2007.
Computational study of the melting-freezing transition in the quantum hard-sphere system for intermediate densities. I. Thermodynamic results
Luis M. Sese
The points where the fluid-solid (face-centered-cubic) transition takes place in the quantum hard-sphere system, for reduced densities 0.85>rho[sub N][sup *]>0.5 (reduced de Broglie wavelengths lambda[sub B][sup *]<=0.8), have been determined via calculations of Helmholtz free energies. A number of ... [J. Chem. Phys. 126, 164508 (2007)] published Mon Apr 30, 2007.
Phase Transition to Exact Susy
L. Clavelli
The anthropic principle is based on the observation that, within narrow bounds, the laws of physics are such as to have allowed the evolution of life. The string theoretic approach to understanding this observation is based on the expectation that the effective potential has an enormous number of lo ... [AIP Conf. Proc. 903, 634 (2007)] published Fri Apr 27, 2007.
The Higgs in the Sky: production of gravitational waves during a first-order phase transition
C. Delaunay, C. Grojean, and G. Servant
If there was a first order phase transition in the early universe, there should be an associated stochastic background of gravitational waves. The characteristic frequency of the spectrum due to phase transitions which took place at the weak scale is precisely in the window that will be probed by LI ... [AIP Conf. Proc. 903, 24 (2007)] published Fri Apr 27, 2007.
Ultrasound Imaging Of Patients With Testicular Torsion
B. I. Tsekov, G. T. Clement, and V. M. Savov
... [AIP Conf. Proc. 899, 826 (2007)] published Fri Apr 27, 2007.
Medical Image Digitalization and Archiving Information System in Serbia
Vjekoslav Sajfert, Vladimir Milićević, Vesna Jevtić, and Višnja Jovanović
The paper gives a brief presentation of digital and archiving imaging system (PACS) with a survey of the main characteristics and development of the system worldwide as well as the possibilities and the area of its implementation in our conditions. We have given a proposition for digitalization and ... [AIP Conf. Proc. 899, 822 (2007)] published Fri Apr 27, 2007.
On Biospeckle Size Analysis Technique in Particle Concentration and Size Assessment
Dan Chicea
When coherent light crosses a medium having biological cells as scattering centers in suspension a speckled image is obtained in the far field, called biospeckle. Speckle size can bring information on the scattering media. The scattering media were diluted milk and urine. Digital image files were re ... [AIP Conf. Proc. 899, 809 (2007)] published Fri Apr 27, 2007.
A Possible Application of Coherent Light Scattering on Biological Fluids
Dan Chicea and Liana Maria Chicea
Human urine from both healthy patients and patients with different diseases was used as scattering medium in a coherent light scattering experiment. The time variation of the light intensity in the far field speckle image was acquired using a data acquisition system on a PC and a time series resulte ... [AIP Conf. Proc. 899, 808 (2007)] published Fri Apr 27, 2007.
MAPLE Procedures For Boson Fields System On Curved Space - Time
Gabriel Murariu
Systems of interacting boson fields are an important subject in the last years. From the problem of dark matter to boson stars' study, boson fields are involved. In the general configuration, it is considered a Klein-Gordon-Maxwell-Einstein fields system for a complex scalar field minimally coupled ... [AIP Conf. Proc. 899, 719 (2007)] published Fri Apr 27, 2007.
Ultrasonic Imaging of an Object with Complicated Shape at the Presence of Fourier and Non-Fourier Series in the Transmitted through the Object Acoustic Field
A. I. Andreeva, M. T. Burova, and J. I. Burov
The ultrasonic imaging attained a special importance in all science areas during the recent years. The development of this area is stimulated by the creation of flexible systems using acoustic phase array (matrix) technology. It is of great importance for applications in the systems for imaging of h ... [AIP Conf. Proc. 899, 713 (2007)] published Fri Apr 27, 2007.
Computational Dynamic Analysis Of Unbalanced Mass of Vertical Conveyer-Elevator
Bayiroglu Huseyin
The elevator has a cylindrical casing, a helical open trough or closed pipe is attached at the outside or at the inside of the vertical tubular casing, along which the load can be transported from the bottom upwards. In this work, the change of the parameters of the motion has been shown graphically ... [AIP Conf. Proc. 899, 712 (2007)] published Fri Apr 27, 2007.
The Dynamic Analysis of Kreiss Conveyers with Using Computer
Alisverisci Fusun and Bayiroglu Huseyin
The changes of the quantity of motion parameters have been represented by graphics using mathematica programme. Obtained results are compared the results in the literature and it is realized that the general tendency are approximately same. (C)2007 American Institute of Physics ... [AIP Conf. Proc. 899, 711 (2007)] published Fri Apr 27, 2007.
Exact and Monte Carlo study of the two self-avoiding random walks on the three-dimensional Sierpinski lattices
Vladimir Miljković, Ivan Živić, and Sava Milošević
We consider the phenomena of entanglement of the two interacting self-avoiding walks (SAW) situated in a member of the three-dimensional Sierpinski Gasket (SG) fractal family. We focus our attention to determine number of point contacts between the two SAW paths M, which turns out to be a set of pow ... [AIP Conf. Proc. 899, 629 (2007)] published Fri Apr 27, 2007.
Frequency-dependent conductivity in unannealed thin films of As[sub 0.40]Se[sub 0.40]Te[sub 0.20]
Bukem Bilen, Yani Skarlatos, and Gulen Aktas
D.c. and a.c. conductivity measurements have been performed on unannealed amorphous As[sub 0.40]Se[sub 0.40]Te[sub 0.20] thin films. The d.c. behaviour of the samples indicates hopping conduction mechanisms between 143K210K and 210K343K. The a.c. conductivity of the films is well represented by the ... [AIP Conf. Proc. 899, 588 (2007)] published Fri Apr 27, 2007.
Numerical Calculation Of The Hall Mobility Of InP
Senem Aydogu and Omer Ozbas
The aim of this work, the Hall mobility of InP semiconductor compound which is technologically important material is calculated with iterative method. Furthermore, it is investigated that the calculated values of mobility are depended on temperature interval 30 600K and carrier concentrations at 30 ... [AIP Conf. Proc. 899, 582 (2007)] published Fri Apr 27, 2007.
The Dynamic Analysis of Marcus Conveyor with Using Computer
Bayiroglu Huseyin and Alisverisci Fusun
A Marcus conveyer consists of a trough supported by stationary rollers and double-crank drive. In Marcus conveyers by turning system is possible to give back and forth movement. The trough acceleration first increases gradually, then drops down sharply, changes the direction, attains the highest neg ... [AIP Conf. Proc. 899, 375 (2007)] published Fri Apr 27, 2007.
Computational Dynamic Analysis of Vibrational Conveyers with Single-Mass; Crank-and-Rod Exciters
G. Fusun Alisverisci
The conveyers has a trough supported on elastic stands which are rigidly fastened to the trough and a supporting frame. The trough is oscillated by a common crank drive. This vibration cause the load to move forward and upwards. These moving load jumps periodically and move forward by little vibrati ... [AIP Conf. Proc. 899, 373 (2007)] published Fri Apr 27, 2007.
Percolation under Quantum Hall Effect Conditions
Valeriy Arkhincheev
The percolation under Quantum Hall Effect conditions in inhomogeneous medium is studied. The lower and upper bound values are founded, which are different from values for metal conductivity. It is connected with unusual character of current percolation under QHE regime. (C)2007 American Institute of ... [AIP Conf. Proc. 899, 235 (2007)] published Fri Apr 27, 2007.
The Dirac Equation In Teleparellel Theory For Nonfactorizable Metric
E. Ersin Kangal, Ali Havare, and Kenan Sogut
There are seraval important point between General Relativity(GRT) and Teleparallel Theory(TPT). According to the general relativity, it is possible to be considered the gravitational intereaction not as a force but as a geometric deformation of the flat Minkownski spacetime. On the other hand, telep ... [AIP Conf. Proc. 899, 149 (2007)] published Fri Apr 27, 2007.
On the Equivalence of the Dirac Equation Between General Relativity and Teleparallel Gravity
Meral Bagci, Ali Havare, and Kenan Sogut
The Teleparellel Theory (TPT) is one of alternative ways of describing the gravitational field. Unlike the general relativistic description of gravitation in the TPT curvature is assumed to vanish instead of torsion. In general relativistic theory (GRT) the Riemann geometry is used to describe the e ... [AIP Conf. Proc. 899, 139 (2007)] published Fri Apr 27, 2007.
Saddle point shapes of nuclei
D. N. Poenaru, I. H. Plonski, and W. Greiner
Very general reflection asymmetrical saddle point nuclear shapes are obtained by solving an integro-differential equation without being necessary to specify a certain parametrization. This equation is derived as an Euler-Lagrange relationship associated to the variational problem of minimizing the p ... [AIP Conf. Proc. 899, 15 (2007)] published Fri Apr 27, 2007.
Self-consistent potential of intrinsic localized modes: Application to diatomic chain
A. Shelkan, V. Hizhnyakov, and M. Klopov
A mean-field theory of intrinsic localized modes (ILMs) in anharmonic lattices is proposed, which allows one to perform calculations for macroscopically large lattices of arbitrary dimensions with realistic pair potentials. In the theory, the original nonlinear problem is reduced to a linear problem ... [Phys. Rev. B 75, 134304 (2007)] published Thu Apr 26, 2007.
Floppy swimming: Viscous locomotion of actuated elastica
Eric Lauga
Actuating periodically an elastic filament in a viscous liquid generally breaks the constraints of Purcell's scallop theorem, resulting in the generation of a net propulsive force. This observation suggests a method to design simple swimming deviceswhich we call elastic swimmerswhere the actuation m ... [Phys. Rev. E 75, 041916 (2007)] published Thu Apr 26, 2007.
Novel denoising technique based on filtering the coefficients of a redundant wavelet transform
Puyi Lu, Aiko Satou, Michiko Miyamoto, and Shigehito Suzuki
A denoising technique based on filtering the coefficients of a redundant wavelet transform is proposed for the purpose of reducing statistical noise in images without blurring sharp edges. The wavelet coefficients in the higher-spatial-frequency components are denoised using a function that has been ... [Opt. Eng. 46, 043202 (2007)] published Thu Apr 26, 2007.
Statistical Physics of Dark and Normal Matter Distribution in Galaxy Formation : Dark Matter Lumps and Black Holes in Core and Halo of Galaxy. (arXiv:0805.2360v1 [physics.gen-ph])
ePrint arXiv http://arXiv.org/
Theory of the Elementary Particles. (arXiv:0804.4848v2 [physics.gen-ph] UPDATED)
ePrint arXiv http://arXiv.org/
The accuracy of the quantum adiabatic approximation in its original form. (arXiv:0805.0350v2 [physics.gen-ph] UPDATED)
ePrint arXiv http://arXiv.org/
Gravity Control by means of Electromagnetic Field through Gas or Plasma at Ultra-Low Pressure. (arXiv:physics/0701091v7 [physics.gen-ph] UPDATED)
ePrint arXiv http://arXiv.org/