نتایج جستجو برای: eccentricity sequence

تعداد نتایج: 411450  

2007
Adrian Ion Gabriel Peyré Yll Haxhimusa Samuel Peltier Walter G. Kropatsch Laurent Cohen

This paper makes use of the continuous eccentricity transform to perform shape matching. The eccentricity transform has already been proven useful in a discrete graph-theoretic setting. We show how these ideas extend naturally to the continuous setting thus bringing a higher geometrical fidelity. The continuous eccentricity transform is used to compute multiscale descriptors for shapes. These d...

2015
D. H. Rothman

1 Natural climate change: glacial cycles 1 1.1 Climatic cycles . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Milankovitch hypothesis: an introduction . . . . . . . . . . . . 4 1.2.1 Precession, obliquity, and eccentricity . . . . . . . . . . 5 1.2.2 Insolation . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3 Precession and obliquity . . . . . . . . . . . . . . . . . . . . . 8...

2013

Current spectrums of a high power induction machine was calculated for the cases of full symmetry, static and dynamic eccentricity. The calculations involve integration of 93 electrical plus four mechanical ordinary differential equations. Electrical equations account for variable inductances affected by slotting and eccentricities. The calculations were followed by Fourier analysis of the stat...

2003
Stephen N. Floor Adrian L. Melott Patrick M. Motl

The rate of galaxy cluster eccentricity evolution is useful in understanding large scale structure. Rapid evolution for z < 0.13 has been found in observed clusters. We present an analysis of projections of 41 clusters produced in hydrodynamic simulations augmented with radiative cooling and 43 clusters from adiabatic simulations. This new, larger set of simulated clusters strengthens the claim...

2017
Alexandru Popovici Peter M. T. Zaal

This study investigated the effects of viewing a primary flight display at different retinal eccentricities on human manual control behavior and performance. Ten participants performed a pitch tracking task while looking at a simplified primary flight display at different horizontal and vertical retinal eccentricities, and with two different controlled dynamics. Tracking performance declined at...

2012
Guihai Yu Lihua Feng

The connective eccentricity index of a graph G is defined as ξce(G) = ∑ v∈V (G) d(v) ε(v) , where ε(v) and d(v) denote the eccentricity and the degree of the vertex v, respectively. In this paper we derive upper or lower bounds for the connective eccentricity index in terms of some graph invariants such as the radius, independence number, vertex connectivity, minimum degree, maximum degree etc....

2010
Peter Huybers Oded Aharonson

[1] The accuracy of geologic chronologies can, in principle, be improved through orbital tuning, the systematic adjustment of a chronology to bring the associated record into greater alignment with an orbitally derived signal. It would be useful to have a general test for the success of orbital tuning, and one proposal has been that eccentricity ought to covary with the amplitude envelope assoc...

2007
Walter G. Kropatsch Adrian Ion Samuel Peltier

The eccentricity transform associates to each point of a shape the distance to the point farthest away from it. The transform is defined in any dimension, for open and closed manyfolds, is robust to Salt & Pepper noise, and is quasi-invariant to articulated motion. This paper presents and algorithm to efficiently compute the eccentricity transform of a polygonal shape with or without holes. In ...

2008
YUE SHEN

We investigate the estimation of orbital parameters by least-χ2 Keplerian fits to radial velocity (RV) data using synthetic data sets. We find that while the fitted period is fairly accurate, the best-fit eccentricity and Mp sin i are systematically biased upward from the true values for low signal-to-noise ratio K/σ . 3 and moderate number of observations Nobs . 60, leading to a suppression of...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
Navid Kashaninejad Weng Kong Chan Nam-Trung Nguyen

This article experimentally shows that the wetting property of a micropatterned surface is a function of the center-to-center offset distance between successive pillars in a column, referred to here as eccentricity. Studies were conducted on square micropatterns which were fabricated on a silicon wafer with pillar eccentricity ranging from 0 to 6 μm for two different pillar diameters and spacin...

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