Results 31 to 40 of about 4,780,938 (334)
Multi-pyramid image spatial structure based on coarse-to-fine pyramid and scale space
CAAI Transactions on Intelligence Technology, 2018 Coarse-to-fine pyramid and scale space are two important image structures in the realm of image matching. However, the advantage of coarse-to-fine pyramid is neglected as the pyramid structure is usually constructed with the down sampling method in scale
Jiucheng Xu, Nan Wang, Yuyao Wang
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, 2003 We derive both Lagrangian and Hamiltonian mechanics as gauge theories of Newtonian mechanics. Systematic development of the distinct symmetries of dynamics and measurement suggest that gauge theory may be motivated as a reconciliation of dynamics with ...
Anderson +7 more
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Operational definition of (brane induced) space-time and constraints on the fundamental parameters [PDF]
, 1999 First we contemplate the operational definition of space-time in four dimensions in light of basic principles of quantum mechanics and general relativity and consider some of its phenomenological consequences.
Michael Maziashvili +53 more
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An Adaptive Method for Star Extraction from Digital Astronomical Images [PDF]
فصلنامه علوم و فناوری فضایی, 2010 Celestial positioning has been used for navigation purposes for many years. Stars as the extra-terrestrial benchmarks provide unique opportunity in absolute point positioning.
M. A. Sharifi +2 more
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Exploring redshift-space distortions in large-scale structure
, 2018 We explore and compare different ways large-scale structure observables in redshift-space and real space can be connected. These include direct computation in Lagrangian space, moment expansions and two formulations of the streaming model.
Vlah, Zvonimir, White, Martin
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Fast Frequency Estimation by Zero Crossings of Differential Spline Wavelet Transform
EURASIP Journal on Advances in Signal Processing, 2005 Zero crossings or extrema of a wavelet transform constitute important signatures for signal analysis with the advantage of great simplicity. In this paper, we introduce a fast frequency-estimation method based on zero-crossing counting in the transform ...
Chen Jie +3 more
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Frontiers in Signal ProcessingThis paper presents an analysis of properties of two hybrid discretisation methods for Gaussian derivatives, based on convolutions with either the normalised sampled Gaussian kernel or the integrated Gaussian kernel followed by central differences.
Tony Lindeberg
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Scale and space dependencies of soil nitrogen variability [PDF]
Nonlinear Processes in Geophysics, 2017 In this study, we use multifractal analysis, through generalized dimensions (Dq) and the relative entropy (E(δ)), to investigate the residual effects of fertigation treatments applied to a previous crop on wheat and grain biomass and nitrogen content ...
A. M. Tarquis +7 more
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The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
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Scientific ReportsDietary interventions can reduce progression to type 2 diabetes mellitus (T2DM) in people with non-diabetic hyperglycaemia. In this study we aimed to determine the impact of a DNA-personalised nutrition intervention in people with non-diabetic ...
Maria Karvela +17 more
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