scholarly journals A Novel Artificial Mosaic Generation Technique Driven by Local Gradient Analysis

2008 ◽  
pp. 76-85 ◽  
Author(s):  
Sebastiano Battiato ◽  
Gianpiero Di Blasi ◽  
Giovanni Gallo ◽  
Giuseppe Claudio Guarnera ◽  
Giovanni Puglisi
Keyword(s):  
Gradient Analysis ◽  
Generation Technique ◽  
Mosaic Generation ◽  
Local Gradient

scholarly journals Artificial Mosaic Generation with Gradient Vector Flow and Tile Cutting

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Sebastiano Battiato ◽  
Alfredo Milone ◽  
Giovanni Puglisi
Keyword(s):  
Visual Information ◽  
State Of The Art ◽  
Source Image ◽  
Gradient Vector Flow ◽  
Gradient Vector ◽  
Generation Technique ◽  
Mosaic Generation ◽  
Art Techniques

Mosaics are images obtained by cementing together small colored fragments and are an ancient example of discrete primitive-based images. Artificial mosaics are illustrations composed by a set of small images called “tiles” that tessellate a source image aiming to reproduce the original visual information in a mosaic-like style. In this paper, we propose a mosaic generation technique based on gradient vector flow (GVF) together with a set of tile cutting heuristics evaluated according to aesthetic criteria. The effectiveness of the proposed approach has been confirmed by a series of tests and comparisons with state-of-the-art techniques.

OFDM Multitone Signal Generation Technique for Analog Circuitry Test Characterization

2016 ◽  
Vol 63 (6) ◽  
pp. 583-587 ◽  
Author(s):  
Nicholai L'Esperance ◽  
Timothy Platt ◽  
Mustapha Slamani ◽  
Tian Xia
Keyword(s):  
Signal Generation ◽  
Generation Technique ◽  
Analog Circuitry

Electromechanical fields in a hollow piezoelectric cylinder under non-uniform load: flexoelectric effect

2021 ◽  
pp. 108128652110207
Author(s):  
Olha Hrytsyna
Keyword(s):  
Analytical Solutions ◽  
Point Group ◽  
The Body ◽  
Small Scale ◽  
Gradient Theory ◽  
Local Mass ◽  
Wide Range ◽  
Mass Displacement ◽  
Local Mass Displacement ◽  
Local Gradient

The relations of a local gradient non-ferromagnetic electroelastic continuum are used to solve the problem of an axisymmetrical loaded hollow cylinder. Analytical solutions are obtained for tetragonal piezoelectric materials of point group 4 mm for two cases of external loads applied to the body surfaces. Namely, the hollow pressurized cylinder and a cylinder subjected to an electrical voltage V across its thickness are considered. The derived solutions demonstrate that the non-uniform electric load causes a mechanical deformation of piezoelectric body, and vice versa, the inhomogeneous radial pressure of the cylinder induces its polarization. Such a result is obtained due to coupling between the electromechanical fields and a local mass displacement being considered. In the local gradient theory, the local mass displacement is associated with the changes to a material’s microstructure. The classical theory does not consider the effect of material microstructure on the behavior of solid bodies and is incapable of explaining the mentioned phenomena. It is also shown that the local gradient theory describes the size-dependent properties of piezoelectric nanocylinders. Analytical solutions to the formulated boundary-value problems can be used in conjunction with experimental data to estimate some higher-order material constants of the local gradient piezoelectricity. The obtained results may be useful for a wide range of appliances that utilize small-scale piezoelectric elements as constituting blocks.

FPGA realization of an efficient image scalar with modified area generation technique

2019 ◽  
Vol 78 (16) ◽  
pp. 23707-23732
Author(s):  
V. Ramadevi ◽  
K. Manjunatha Chari
Keyword(s):  
Generation Technique

scholarly journals Ribonucleic Acid Biosynthesis in Human Leukocytes

Blood ◽  
1966 ◽  
Vol 28 (2) ◽  
pp. 188-200 ◽  
Author(s):  
MARTIN J. CLINE
Keyword(s):  
Density Gradient ◽  
Ribonucleic Acid ◽  
Turnover Rate ◽  
Rna Synthesis ◽  
Gradient Analysis ◽  
Sucrose Density Gradient ◽  
Acid Biosynthesis ◽  
Total Load ◽  
Human Leukocytes ◽  
Particle Ingestion

Abstract Phagocytosis has profound effects on several aspects of the RNA metabolism of human leukocytes. The major changes induced by particle ingestion appear to be (1) an increased uptake of pyrimidine precursors from the suspending medium, (2) a contraction in the size of the nucleotide pool, (3) an accelerated rate of destruction of preexisting RNA, and (4) an increased rate of RNA synthesis. Sucrose density gradient analysis of the newly synthesized RNA suggests that several classes of RNA are involved in this process. The increased turnover rate of the nucleotide pool and of the cellular RNA of the leukocyte is proportional, within limits, to the total load of ingested particles.

Equations of local gradient electromagnetothermomechanics of dielectrics with regard for polarization inertia

2012 ◽  
Vol 47 (4) ◽  
pp. 535-544
Author(s):  
V. F. Kondrat ◽  
O. R. Hrytsyna
Keyword(s):  
Local Gradient
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