نتایج جستجو برای: target initial reflection

تعداد نتایج: 808069  

Journal: :Optics express 2005
P Dombi V S Yakovlev K O'Keeffe T Fuji M Lezius G Tempea

Dispersive optical interference coatings (chirped mirrors - CMs) are designed by computer optimization of an analytically calculated initial multilayer. Traditionally, the relevant properties of the CM (reflectance and the frequency-dependence of the phase shift upon reflection) are optimized to match frequency-domain targets. We propose a novel target function that quantifies directly the capa...

2012
Justin Brown Guruswami Ravichandran J. L. Brown G. Ravichandran

Traditionally, most dynamic shock compression experiments are conducted using a plane one-dimensional wave of uniaxial strain. In this case, the evaluation of the equation of state is simplified due to the geometry, but the amplitude of the induced shock wave is limited by the magnitude of the input load. In an effort to dramatically increase the range of pressures that can be accessed by tradi...

Journal: :journal of research in applied linguistics 0
sara shahani department of english, isfahan (khorasgan) branch, islamic azad university, isfahan, iran azizeh chalak department of english, isfahan (khorasgan) branch, islamic azad university, isfahan, iran

the present research aimed at investigating the interaction of the classroom talk to have a better understanding of the teachers’ practice teaching which can pave the way for reflection on teaching. the study benefitted from conversation analytic perspective to qualitatively and interpretively examine the classroom discourse of the teacher-learner interaction. the classroom talk was analyzed th...

2001
L. van Kempen H. Sahli J. Brooks J. Cornelis

One of the main problems with the interpretation of GPR data is the strong ground reflection, obscuring signals arriving from just underneath the surface. The strength of this reflection can be reduced by deconvolution. This technique is especially useful when GPR is used to detect buried landmines. Parametric and non parametric time variant estimators are used for clutter characterization. Wav...

Journal: :International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2014

2015
R. Kumar S. K. Garg

The reflection and transmission of thermoelastic plane waves at an imperfect boundary of two dissimilar fibre-reinforced transversely isotropic thermoelastic solid half-spaces under hydrostatic initial stress has been investigated. The appropriate boundary conditions are applied at the interface to obtain the reflection and transmission coefficients of various reflected and transmitted waves wi...

1999
Harry A. Atwater Thomas J. Watson Channing C. Ahn W. M. Keck

Using a conventional reflection high-energy electron diffraction gun together with an electron energy loss spectrometer, we have combined in situ measurements of inelastic scattering intensities from Si L2 s and Ge L2,3 core losses with reflection electron diffraction data in order to analyze the initial stages of Ge heteroepitaxy on Si(OO1). Diffraction data indicate an initial layer-by-layer ...

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