نتایج جستجو برای: rotational cube technique

تعداد نتایج: 649049  

2012
B. N. B. Ray Alok Ranjan Tripathy S. P. Mohanty

This work suggests a parallel algorithm for Hermite interpolation on Extended Fibonacci Cube (n) EFC1 . The proposed algorithm has 3 phases: initialization, main and final. The main phase of the algorithm involves 3 2  N multiplications, N additions, N 2 subtractions and N divisions. In final phase we propose an efficient algorithm to accumulate the partial sums of Hermite interpolation in 2 )...

2004
Charles Byrne

The hyperspectral imaging technique described in [12] leads to the interesting problem of reconstructing a three-dimensional data cube from measured data. This problem involves three separate steps in which we must estimate values of a function from values of its Fourier transform. Depending on which of the two functions involved at each step has bounded support, that is, is zero off of a bound...

Journal: :فیزیک زمین و فضا 0
علی هاشمی گازار کارشناس ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران عبدالرحیم جواهریان استاد بازنشسته، گروه فیزیک زمین، مؤسسه ژئوفیزیک، دانشگاه تهران و استاد دانشکده مهندسی نفت دانشگاه صنعتی امیرکبیر، تهران، ایران

seismic attributes are very useful in seismic data interpretation. one of these attributes is the coherency attribute. seismic coherency is a complex trace and a geometrical attribute that is applied to a 3d cube of seismic data. it is a measure of lateral changes in acoustic impedance caused by the variation in structure, stratigraphy, lithology, porosity, and the presence of hydrocarbons. whe...

Journal: :AJNR. American journal of neuroradiology 2003
Markus Kufeld Benjamin Claus Adriana Campi Wolfgang R Lanksch Goetz Benndorf

Three-dimensional (3D) rotational radiography, initially developed to visualize intracranial aneurysms, is applied to the cervical spine after conventional myelography. We call this process 3D rotational myelography. 3D reconstruction and then postprocessing allows imaging in multiple planes. Spinal or nerve root sheath alterations caused by bony or soft tissue can be visualized and differentia...

2005
IOANA ZELINA

In this paper is presented a parallel algorithm for computing a Lagrange interpolation on a Extended Fibonacci Cube EFC 1(n).The algorithm consists of three phases: initialisation phase, main phase in wich the Lagrange polynomials are computed and final phase in wich the terms of the interpolation formula are added together.

2017
Joel A. Shapiro

At the beginning of the semester we motivated our investigation of symmetries by illustrating that, given differential equations which were symmetric, the solutions had to transform into each other under the symmetries as a representation of the symmetry. The first illustrations considered Schrödinger equations with symmetric potentials, such as the electrons in the spherically symmetric potent...

Journal: :Revista espanola de cardiologia 2012
Antonio E Gómez-Menchero José F Díaz Carlos Sánchez-González Rosa Cardenal Amit B Sanghvi Jessica Roa-Garrido José L Rodríguez-López

INTRODUCTION AND OBJECTIVES Coronary angiography is the gold standard for the study of coronary artery disease. This technique requires several orthogonal projections. Rotational angiography is a new technique which involves pre-set rotation of the X-ray tube around the patient and allows visualization of each coronary artery in different views, using a single contrast injection. The purpose of...

2004
Michael Leyton

Symmetry means sameness, or indistinguishability, under some transformation. For example, a human face is indistinguishable from its reflected version, and therefore we say that it is reflectionally symmetric. A circle is indistinguishable from any of its rotated versions (about its center), and therefore we say that it is rotationally symmetric. When one puts together all the transformations t...

Solar magnetic tornadoes are known to be one of the mass and energy transport mechanisms from the lower solar atmosphere into the upper layers of the solar corona. A bright spiral structure with two arms is observed using high-cadence EUV images of 171, 193 and 304 Ǻ channels of Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO) on 10th of July 2011 for three hours. ...

Journal: :Collegium antropologicum 2008
Milan Coh Stanko Stuhec Matej Supej

The study aimed to establish the modalities of the rotational shot put technique of two elite shot putters with substantially different constitutional characteristics. A biomechanical analysis of the technique was carried out using the APAS 3-D kinematic system, whereby a 15-segment model of shot putters was defined by 18 reference points. To enable the calculation of the kinematic and dynamic ...

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