Results 91 to 100 of about 29,355 (269)
Merge Operation Effect On Image Compression Using Fractal Technique
مجلة بغداد للعلوم, 2007 Fractal image compression gives some desirable properties like fast decoding image, and very good rate-distortion curves, but suffers from a high encoding time. In fractal image compression a partitioning of the image into ranges is required.
Baghdad Science Journal
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Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Underwater Acoustic Image Encoding Based on Interest Region and Correlation Coefficient
Complexity, 2018 It is difficult for the conventional image compression method to achieve good compression effect in the underwater acoustic image (UWAI), because the UWAI has large amount of noise and low correlation between pixel points.
Liu Lixin, Guo Feng, Wu Jinqiu
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Fractal space frames and metamaterials for high mechanical efficiency
, 2008 A solid slender beam of length $L$, made from a material of Young's modulus $Y$ and subject to a gentle compressive force $F$, requires a volume of material proportional to $L^{3}f^{1/2}$ [where $f\equiv F/(YL^{2})\ll 1$] in order to be stable against ...
Farr, R. S., Mao, Y.
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Spatial metrics in fire ecology: seeking consistency amidst complexity
Biological Reviews, EarlyView.ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey +5 more
wiley +1 more source
Characterization of mesoscopic damage evolution in complex calcite vein-filled coal rocks [PDF]
Youqicang pingjia yu kaifaTo investigate the failure characteristics of calcite veins with complex morphologies in coal rock under uniaxial compression, thin-section observation was used to examine the calcite vein filling within coal rock.
WU Zhonghu +5 more
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On the Complexity and Behaviour of Cryptocurrencies Compared to Other Markets [PDF]
, 2014 We show that the behaviour of Bitcoin has interesting similarities to stock and precious metal markets, such as gold and silver. We report that whilst Litecoin, the second largest cryptocurrency, closely follows Bitcoin's behaviour, it does not show all ...
Wilson-Nunn, Daniel, Zenil, Hector
core
Deep Underground Science and Engineering, EarlyView.Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
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Deep Underground Science and Engineering, EarlyView.This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao +5 more
wiley +1 more source
GPU-Accelerated Fractal Compression Dimension Estimation
Fractal and FractionalFractal dimension is widely used as a quantitative descriptor of structural complexity in digital images. However, its practical implementation often involves methodological and computational trade-offs.
Ángel Díaz-Herrezuelo +1 more
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