Results 41 to 50 of about 98,726 (338)

Poisson-to-Wigner crossover transition in the nearest-neighbor spacing statistics of random points on fractals

open access: yes, 2005
We show that the nearest-neighbor spacing distribution for a model that consists of random points uniformly distributed on a self-similar fractal is the Brody distribution of random matrix theory.
B. B. Mandelbrot   +10 more
core   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

open access: yesAdvanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding   +7 more
wiley   +1 more source

A Fast Digital Image Transmission Approach in the Distributed Maritime Training System

open access: yesJournal of Algorithms & Computational Technology, 2010
In the Distributed Maritime Training system, the real-time transmission of large-scale 3D scene is one of the main problems. In recent years, fractal image compression techniques have gained more interests because of their capability to achieve high ...
Dan Liu
doaj   +1 more source

Target Detection Using Fractal Geometry [PDF]

open access: yes, 1991
The concepts and theory of fractal geometry were applied to the problem of segmenting a 256 x 256 pixel image so that manmade objects could be extracted from natural backgrounds.
Fuller, J. Joseph
core   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

open access: yesAdvanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker   +6 more
wiley   +1 more source

Fractal-Based Image Encoding and Compression Techniques

open access: yesCommunications, 2013
In computer science and information theory, data compression, source coding, or bit-rate reduction is the process of encoding digital information using fewer bits than the original representation.
Vasileios Drakopoulos
doaj   +1 more source

Closed Contour Fractal Dimension Estimation by the Fourier Transform [PDF]

open access: yes, 2011
This work proposes a novel technique for the numerical calculus of the fractal dimension of fractal objects which can be represented as a closed contour.
Beck   +31 more
core   +1 more source

Fractal coding based on image local fractal dimension [PDF]

open access: yesClinics, 2005
Fractal codification of images is based on self-similar and self-affine sets. The codification process consists of construction of an operator which will represent the image to be encoded. If a complicated picture can be represented by an operator then it will be transmitted or stored very efficiently.
Conci, Aura, Aquino, Felipe R.
openaire   +3 more sources

MPI‐Guided Photothermal Therapy of Prostate Cancer Using Stem Cell Delivery of Magnetotheranostic Nanoflowers

open access: yesAdvanced Functional Materials, EarlyView.
Tumor‐tropic human mesenchymal stem cells (hMSCs) were used as delivery vehicles for magnetotheranostic gold–iron oxide nanoflowers. Magnetic particle imaging of the iron component demonstrated widespread intratumoral distribution and sustained retention in contrast to injection of naked nanoflowers.
Behnaz Ghaemi   +7 more
wiley   +1 more source

Image Quality Assessment Using Regularity of Color Distribution

open access: yesIEEE Access, 2016
To quantify the perceptual quality of the color image, a novel reduced-reference computational model is proposed in this paper. The proposed metric, named regularity of color distribution measure, is designed to measure the difference of the color ...
Delei Liu, Fuzhong Li, Houbing Song
doaj   +1 more source

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