منابع مشابه
Oja centers and centers of gravity
Oja depth (Oja 1983) is a generalization of the median to multivariate data that measures the centrality of a point x with respect to a set S of points in such a way that points with smaller Oja depth are more central with respect to S. Two relationships involving Oja depth and centers of mass are presented. The first is a form of Centerpoint Theorem which shows that the center of mass of the c...
متن کاملOja medians and centers of gravity
The bound in (1) is not known to be tight. The bound in (2) is tight, up to a lower-order term, for some point sets S. ∗This work was initiated during the Workshop on Computational Geometry 2006 in Caldes de Malavella. The authors wish to thank Ferran Hurtado and the organizers for the opportunity of working on this topic. †School of Computer Science, Carleton University, [email protected]...
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T he world’s economic sphere has experienced significant changes in the past 40 years. The economies of the formerly socialist countries in central and eastern Europe, including Russia, underwent significant market reforms such as deregulation, privatization, and reinstatement of property rights toward establishing functioning market economies. Changes in the political economy of several countr...
متن کاملDetermination of centers of gravity of man.
Data are presented coacerning the location of the center of gravity of the adult male in various body positione and the ability to shift the c.g. voluntarily with various body motions. M,•imum possible shifts of the e.g. from tbat of an erect standing posture were found to be IMI inches toward the head, 10 inches toward the feet, 8 inches anteriorly, 4% inches posteriorly and 41 inches laterall...
متن کاملCenters and isochronous centers for generalized quintic systems
In this paper we classify the centers and the isochronous centers of certain polynomial differential systems in R2 of degree d ≥ 5 odd that in complex notation can be written as ż = (λ+ i)z + (zz̄) d−5 2 (Az +Bzz̄ + Czz̄ +Dzz̄ + Ezz̄ + F z̄), where λ ∈ R and A,B,C,D,E, F ∈ C. Note that if d = 5 we obtain the full class of polynomial differential systems of the form a linear system with homogeneous po...
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ژورنال
عنوان ژورنال: Computational Geometry
سال: 2013
ISSN: 0925-7721
DOI: 10.1016/j.comgeo.2012.04.004