Results 11 to 20 of about 547,583 (266)
A simple and effective edge detector [PDF]
, 1997 Nonlinear filtering based on a two concentric circular windows operator is introduced as a simple and effective way to find edges in image processing. The dual windows edge detector can operate with no fixed threshold, is isotropic, i.e. its response does not depend on edge orientation and has good noise immunity in the vicinity of edges. Computational
C. Cafforio +3 more
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Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus
Frontiers in Plant Science, 2022 Range expansion requires peripheral populations to shift adaptive optima to breach range boundaries. Opportunities for range expansion can be assessed by investigating the associations of core-periphery environmental and genetic differences.
Yong-Zhi Yang +5 more
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Pesquisa Agropecuária Brasileira, 2009 The objective of this work was to assess the effects of a forest-field ecotone on earthworm assemblages. Five sites (blocks) differing in the type of crop rotation used in the field were studied in Central Bohemia, Czech Republic. In each block, sampling
Josef Zeithaml +2 more
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Physical Review Letters, 2006 We compute Casimir forces in open geometries with edges, involving parallel as well as perpendicular semi-infinite plates. We focus on Casimir configurations which are governed by a unique dimensional scaling law with a universal coefficient. With the aid of worldline numerics, we determine this coefficient for various geometries for the case of scalar-
Gies, Holger, Klingmuller, Klaus
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Stiffer Bonding of Armchair Edge in Single‐Layer Molybdenum Disulfide Nanoribbons
Advanced Science, 2023 The physical and chemical properties of nanoribbon edges are important for characterizing nanoribbons and applying them in electronic devices, sensors, and catalysts.
Chunmeng Liu +4 more
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Ecotone effect on the fruit fly assemblages (Diptera: Tephritidae) in natural and anthropized environments [PDF]
Brazilian Journal of Biology, 2023 Various species of fruit flies are important pests of fruit cultures and in some crop of vegetables worldwide. Studies of their population patterns, ecological processes and mechanisms that influence their sampling and distribution in the ecosystems ...
M. A. Uchoa +2 more
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Global-Scale Patterns of Forest Fragmentation
Ecology and Society, 2000 We report an analysis of forest fragmentation based on 1-km resolution land-cover maps for the globe. Measurements in analysis windows from 81 km 2 (9 x 9 pixels, "small" scale) to 59,049 km 2 (243 x 243 pixels, "large" scale) were used to characterize ...
Kurt Riitters +4 more
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Ecosphere, 2021 Human land use is fragmenting forests around the globe, increasing the edge density in forest landscapes. More frequent natural disturbances also increase the presence of edges in forest ecosystems.
Franziska Pöpperl, Rupert Seidl
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Research on the edge effect for variable voltage RCM test of concrete
Shuili Shuiyun Gongcheng Xuebao, 2021 The edge effect, resulting from possible leakage in RCM test, and causing the chloride diffusion depth in the edge part of concrete specimen greater than that in the central part, was investigated systematically to analyze its influence on the chloride ...
CHEN Junwu +3 more
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Ecosphere, 2016 Restoration of glades over the past 30 years, involving removal of woody cover and re‐establishment of herbaceous plant communities, has created an archipelago of habitat patches varying in age, size, and isolation. Within these glades, habitat varies in
Alice G. Tipton +2 more
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