نتایج جستجو برای: since the wavefield never vanishes completely however

تعداد نتایج: 16063765  

2015
Zoltan Rihmer Annamária Rihmer Peter Dome

Evidence-based Psychiatric Care 2015;1;19-26 Abstract The risk of suicidal behaviour in mood disorders is an inherent phenomenon and in patients with major mood disorders it strongly relates to the presence and severity of depressive episode. Suicidal behaviour in patients with mood disorders is state and severity dependent that means that suicidality markedly decreases or vanishes after clinic...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

Shot peening beneficial effects on fatigue life of mechanical components are well known. However, there are some reports in the literature that indicate inappropriate shot peening parameters tend to reduce the fatigue life. It is therefore, the purpose of this study to find a logical quantitative justification for these observations. Using finite element method, a dynamic elastic-plastic simula...

2009
Lev Shemer Anna Sergeeva

[1] Unidirectional random waves generated by a wavemaker in a 300-m-long wave tank are investigated experimentally. Spatial evolution of numerous statistical wavefield parameters is studied. Three series of experiments are carried out for different values of the nonlinear parameter e. It is found that the frequency spectrum of the wavefield undergoes significant variation in the course of the w...

2006
Yongwang Ma Gary F. Margrave

Wavefield extrapolation by spatially variable phase shift is currently a migration tool of importance. In this paper, we present a new prestack seismic migration algorithm using the Gabor transform with application to the Marmousi acoustic dataset. The imaging results show a very promising depth imaging algorithm, which is competitive with the best depth imaging algorithms. The Gabor depth imag...

2009
Vladimir Katkovnik Artem Migukin Jaakko Astola Karen Egiazarian

Abstract An application area of digital holography continuously extends: three-dimensional imaging, laser projections, material processing, deformation detection, microscopy, etc. A wavefield reconstruction from intensity and/or phase measurements is one of the basic problems in digital holography methods [1]. We consider reconstruction of a wavefield distribution in an object plane from data i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

fuzzy logic has been developed over the past three decades into a widely applied techinque in classification and control engineering. today fuzzy logic control is one of the most important applications of fuzzy set theory and specially fuzzy logic. there are two general approachs for using of fuzzy control, software and hardware. integrated circuits as a solution for hardware realization are us...

Journal: :SSRN Electronic Journal 2011

پایان نامه :0 1374

to discuss my point, i have collected quite a number of articles, anthologies, and books about "wuthering heights" applying various ideas and theories to this fantastic story. hence, i have come to believe that gadamer and jauss are rightful when they claim that "the individaul human mind is the center and origin of all meaning," 3 that reading literature is a reader-oriented activity, that it ...

2011
Yanfei Wang Jingjie Cao Changchun Yang

SUMMARY Due to the influence of variations in landform, geophysical data acquisition is usually sub-sampled. Reconstruction of the seismic wavefield from sub-sampled data is an ill-posed inverse problem. Compressive sensing can be used to recover the original geophysical data from the sub-sampled data. In this paper, we consider the wavefield reconstruction problem as a com-pressive sensing and...

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