نتایج جستجو برای: digitized phantom

تعداد نتایج: 23610  

Journal: :Quantum science and technology 2023

Abstract The use of variational quantum algorithms for optimization tasks has emerged as a crucial application the current noisy intermediate-scale computers. However, these face significant difficulties in finding suitable ansatz and appropriate initial parameters. In this paper, we employ meta-learning using recurrent neural networks to address issues recently proposed digitized-counterdiabat...

Journal: :IMISCOE research series 2022

2002
Alvin W. K. Soh Zhang Yu Edmond C. Prakash Tony K. Y. Chan Eric Sung

Texture mapping of 3D digitized data is a challenge. This arises mainly due to two factors: i) digitization of geometry and ii) digitization of textures. First, due to digitization of geometry we have a basket of polygons that represent the digitized object. Second, due to digitization of textures, we get another basket of textures that represent the digitized texture of the whole object. Unfor...

Journal: :Journal of Cosmology and Astroparticle Physics 2006

Journal: :iranian journal of nuclear medicine 2007
faraz kalantari hossein rajabi nahid yaghoobi ahmad bitarafan rajabi kourosh gorji

introduction: poor sensitivity and poor signal to noise ratio because of low injected thallium dose and presence of scattered photons are the main problems in using thallium in scintigraphic imaging of the heart. scattered photons are the main cause of degrading the contrast and resolution in spect imaging that result in error in quantification. thallium decay is very complicated and photons ar...

Journal: :Physical review applied 2021

Optical pump-probe setups are commonly used for excitation and investigation of the spin dynamics in various types magnetic materials. Usually spatially homogeneous is considered, but here authors describe optical $n\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}u\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}f\phantom{\rule{0}{0ex}}o\phantom{\rul...

Journal: :journal of lasers in medical sciences 0
mohammad ali ansari laser and plasma research institute, shahid beheshti university. g.c.,tehran, iran mohsen erfanzadeh laser and plasma research institute, shahid beheshti university. g.c.,tehran, iran zeinab hosseini laser and plasma research institute, shahid beheshti university. g.c.,tehran, iran ezzedin mohajerani laser and plasma research institute, shahid beheshti university. g.c.,tehran, iran

introduction: in this study, we intend to use diffuse optical tomography (dot) as a noninvasive, safe and low cost technique that can be considered as a functional imaging method and mention the importance of image reconstruction in accuracy and procession of image. one of the most important and fastest methods in image reconstruction is the boundary element method (bem). this method is introdu...

Journal: :Physical review applied 2021

Neurons exhibit $e\phantom{\rule{0}{0ex}}x\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}b\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}l\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}y$, the dynamical property that is likewise key to biologically inspired artificial intelligence. The neuromorphic c...

2002
D. Datta

Characterization of a digitized image is often required in nondestructive evaluation. Apart from the existing image processing techniques, a recent method to analyze and quantify complex images has been developed based on the fractal theory. As reported, it is possible to get salient information from any digitized image by evaluating the fractal dimension, the defining characteristic of a fract...

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