Results 21 to 30 of about 1,773 (148)

Relativistic Shock Acceleration: A Hartree-Fock Approach [PDF]

open access: yes, 2008
We examine the problem of particle acceleration at a relativistic shocks assuming pitch-angle scattering and using a Hartree-Fock method to approximate the associated eigenfunctions.
Felix A. Aharonian   +4 more
core   +1 more source

Oscillation and non-oscillation criterion for Riemann–Weber type half-linear differential equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
By the combination of the modified half-linear Prüfer method and the Riccati technique, we study oscillatory properties of half-linear differential equations.
Hasil, Petr, Veselý, Michal
core   +3 more sources

Comparison theorems for oscillation and non-oscillation of perturbed Euler type equations [PDF]

open access: yesOpuscula Mathematica
The aim of this paper is to present two comparison theorems. These results enable to describe the oscillation behavior of second order Euler type half-linear differential equations with perturbations in both terms using previously obtained oscillation ...
Petr Hasil   +2 more
doaj   +1 more source

A medieval fallacy: the crystalline lens in the center of the eye. [PDF]

open access: yes, 2016
ObjectiveTo determine whether, as most modern historians have written, ancient Greco-Roman authors believed the crystalline lens is positioned in the center of the eye.BackgroundHistorians have written that statements about cataract couching by Celsus ...
Hadi, Tamer M   +4 more
core   +1 more source

Uniqueness Theorems for Sturm-Liouville Operator with Parameter Dependent Boundary Conditions and Finite Number Of Transmission Conditions

open access: yesCumhuriyet Science Journal, 2017
In this paper, we prove some uniqueness theorems forthe solution of inverse spectral problems of Sturm–Liouville operators withboundary conditions depending linearly on the spectral parameter and with afinite number of transmission conditions.
Yaşar Çakmak, Baki Keskin
doaj   +1 more source

Back analysis of the 2014 San Leo Landslide using combined terrestrial laser scanning and 3D distinct element modelling [PDF]

open access: yes, 2015
This is the author accepted manuscript. The final version is available from Springer Verlag via http://dx.doi.org/10.1007/s00603-015-0763-5© 2015 Springer-Verlag Wien Landslides of the lateral spreading type, involving brittle geological units overlying ...
Bitelli, G   +9 more
core   +1 more source

The spectra of indefinite singular Sturm-Liouville operators [PDF]

open access: yes, 2021
In der vorliegenden Arbeit werden die spektralen Eigenschaften singulärer Sturm-Liouville- Differentialoperatoren der Form Af=1/r(︁−(pf′)′ + qf)︁ mit reellwertigen Koeffizienten p, q und r untersucht.
Schmitz, Philipp
core   +1 more source

Eigenvalue repulsion estimates and some applications for the one-dimensional Anderson model

open access: yes, 2011
We show that the spacing between eigenvalues of the discrete 1D Hamiltonian with arbitrary potentials which are bounded, and with Dirichlet or Neumann Boundary Conditions is bounded away from zero.
Fishman, Shmuel   +3 more
core   +1 more source

Fabrication and Functionalization of Nano-Micro Polymer Tubes by using ATRP/Self-assembly Tech nique and Immobilitzation of Gold pparticles onto Self-assembly modified Surfaces [PDF]

open access: yes, 2006
One of the Goals of this work was to seal tubes with polymers by using ATRP anf self-assembly technique. PEM tubes were fabricated using self-assembly of polyelectrolytes.
Greiner, Andreas (Prof.), Kazemi, Abbass
core   +1 more source

Mixed Methods in Value Research: An Analysis of the Validity of the Russian Version of the Schwartz Value Survey (SVS) Using Cognitive Interviews, Multidimensional Scaling (MDS), and Confirmatory Factor Analysis (CFA) [PDF]

open access: yes, 2017
The aim of this study is the validation of the Russian version of the Schwartz Value Survey (SVS) using qualitative (cognitive interviewing) and quantitative (multidimensional scaling, confirmatory factor analysis) methods.
Efremova, Maria   +3 more
core   +1 more source

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