نتایج جستجو برای: v curves
تعداد نتایج: 391861 فیلتر نتایج به سال:
The evolution of plane curves obeying the equation v = β(k), where v is normal velocity and k curvature of the curve is studied. Morphological image and shape multiscale analysis of Alvarez, Guichard, Lions and Morel and affine invariant scale space of curves introduced by Sapiro and Tannenbaum as well as isotropic motions of plane phase interfaces studied by Angenent and Gurtin are included in...
A nonequilibrium Green’s function method is applied to model high-field quantum transport and electronphonon resonances in semiconductor superlattices. The field-dependent density of states for elastic ~impurity! scattering is found nonperturbatively in an approach which can be applied to both high and low electric fields. I-V curves, and specifically electron-phonon resonances, are calculated ...
We discuss the first results from the Faint Sky Variability Survey (Groot et al. 2000). The data consist of V -band light curves, BV I colours, astrometry, and morphology information on several hundred thousand point and extended sources in the magnitude range V = 17− 25. We discuss the first 30 survey fields covering an area of 8.4 square degrees towards moderate and high galactic latitudes. W...
We study the anisotropic flow V = bk where b > 0. We prove that if 13 < σ ≤ 1, only type I blow up occurs and if 0 < σ < 13 Type II blow up occurs. We also establish a prior estimates and existence of stationary solutions of self-similar curves and the existence of “ Abresch-Langer” type curves.
( I ~ I ) , PLUNKETT (1926), STANLEY (1932), and HARNLY (1932, 1936). Some of these workers have attempted to explain the mechanism of the temperature effect by the form of the curves obtained when the values of the measured character are plotted against the time of transfer. It is significant that the form of these curves, in all cases, appears to be sigmoid, resembling to some extent the prob...
This report is a survey about service curves used in envelope-based models for worstcase performance evaluation, like Network Calculus or Real-Time Calculus. In a first part, we compare different models and their notions of service curves by establishing a hierarchy and similarities between different types of service curves and in a second part, we compare the behaviours of simple and strict se...
Finding suitable non-supersingular elliptic curves becomes an important issue for the growing area of pairing-based cryptosystems. For this purpose, many methods have been proposed when embedding degree k and cofactor h are taken different values. In this paper we propose a new method to find pairing-friendly elliptic curves without restrictions on embedding degree k and cofactor h. We propose ...
Three similar negative differential resistance (NDR) profiles with both high peak to valley current density ratio (PVCDR) value and high peak current density (PCD) value in unity resonant tunneling electronic circuit (RTEC) element is developed in this paper. The PCD values and valley current density (VCD) values of the three NDR curves are all about 3.5 A and 0.8 A, respectively. All PV values...
The most important factor in predicting the risk of injury or death in a frontal crash is the crash severity, which is expressed as the velocity change, or delta-V, experienced by the vehicle during the crash. The National Automotive Sampling System (NASS) is the largest database in the world linking injury outcomes with delta-Vs, which are obtained from field reconstructions. The accuracy of t...
<span>In this research, the effects of magnetic field intensity on electrical characteristics a monocrystalline silicon solar cell were investigated. The experimental test-rig under Standard Test Condition was set up and tested to observe respective effects. in terms current-voltage-power curves, critical parameters fill factor then examined analyzed. outcome study demonstrates that exter...
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