نتایج جستجو برای: rayleigh function

تعداد نتایج: 1226080  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

chapter one is devoted to a moderate discussion on preliminaries, according to our requirements. chapter two which is based on our work in (24) is devoted introducting weighted semigroups (s, w), and studying some famous function spaces on them, especially the relations between go (s, w) and other function speces are invesigated. in fact this chapter is a complement to (32). one of the main fea...

2009
Nor Azwadi Che Sidik

In this paper, a 3D double-population thermal lattice Boltzmann BGK scheme is applied to solve three-dimensional, incompressible thermal fluid flow problem. The simplest lattice BGK D3Q6 model, developed based on passive-scalar approach, is proposed to represent the energy distribution function. While the D3Q19 lattice model is chosen to represent density distribution function in order to calcu...

2000
H. H. Kee G. P. Lees T. P. Newson

Long range simultaneous distributed strain and temperature sensors have many applications for measurements in the power and oil industries and also for structural monitoring. We present an efficient technique to measure both the intensity and frequency shift at every point along the sensing fibre with a low loss filtering device utilising two in-fibre Mach-Zehnder interferometers. From these tw...

2007
Tony F. Heinz

Single-wall carbon nanotubes can be probed optically by elastic light scattering. This effect forms the basis of a technique, termed Rayleigh scattering spectroscopy, for the study of individual nanotubes. Spectroscopic information on the electronic transitions of both semiconducting and metallic nanotubes is obtained by measuring the elastic scattering cross section as a function of photon ene...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1382

‏‎translation as a comunicative process is always said to be associated with various aspects of meaning loss or gain. subtitling as a mode of translating, due to special discoursal and textual conditions imposed upon it, is believed to be an obvious case of this loss or gain. presenting the spoken sound track of a film in writing and synchronizing the perception of this text by the viewers with...

Journal: :Proceedings of the National Academy of Sciences 1938

2003
Markus Klein

Recent work on mutation-selection models has revealed that, under specific assumptions on the fitness function and the mutation rates, asymptotic estimates for the leading eigenvalue of the mutation-reproduction matrix may be obtained through a lowdimensional variational principle in the limit N → ∞ (where N is the number of types). In order to generalize these results, we consider here a large...

2000
S. A. Kotsopoulos G. K. Karagiannidis

Introduction: Diversity is one of the most commonly used techniques in mobile radio for combatting signal fading. Moreover, equal-gain combining (EGC) has been accepted as an attractive diversity tool due to its improved error performance and the simplicity of its implementation [1]. Two effective techniques have been proposed for the evaluation of error probability (ERRP) in equal-gain combine...

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