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Virtual machine (VM) consolidation provides a promising approach to save energy and to improve resource utilization in data centers. However, the aggressive consolidation of virtual machines may lead to service-level agreements (SLA) violation, which is ...
Lianpeng Li +3 more
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Limit cycles created by piecewise linear centers [PDF]
In the last few years, the interest for studying the piecewise linear differential systems has increased strongly, mainly due to their applications to many physical phenomena. In the study of these differential systems, the limit cycles play a main role.
Jaume Llibre, Xiang Zhang
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Crossing limit cycles for a class of piecewise linear differential centers separated by a conic
In previous years the study of the version of Hilbert's 16th problem for piecewise linear differential systems in the plane has increased. There are many papers studying the maximum number of crossing limit cycles when the differential system is ...
Johana Jimenez +2 more
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Cloud computing is a novel paradigm, where the limitations of ubiquitous connected devices in terms of computing, data access, networking and storage are solved through the use of cloud infrastructure. The pervasive adoption of cloud computing results in
Leila Ismail, Eyad H. Abed
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CT Morphometric Analysis of Ossification Centres in the Fetal Th12 Vertebra [PDF]
Objectives: The present study aimed to determine the growth dynamics of the ossification centers of the twelfth thoracic vertebra in the human fetus, focusing on detailed linear, surface, and volumetric parameters of both the vertebral body and neural ...
Magdalena Grzonkowska +8 more
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Relative Chebyshev centers in normed linear spaces, I
AbstractLet E be a normed linear space, A a bounded set in E, and G an arbitrary set in E. The relative Chebyshev center of A in G is the set of points in G best approximating A. We have obtained elsewhere general results characterizing the spaces in which the center reduces to a singleton in terms of structural properties related to uniform and strict
Amir, Dan, Ziegler, Zvi
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Isochronous centers of a linear center perturbed by fourth degree homogeneous polynomial
The authors study plane time-reversible differential systems of the type \(\dot x= -y+ X_5(x,y)\), \(\dot y= x+ Y_5(x,y)\), where \(X_5\), \(Y_5\) are homogeneous polynomials of degree 5. They look for necessary and sufficient conditions for the origin to be an isochronous center.
Chavarriga, J., Giné, J., García, I.A.
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Piecewise linear perturbations of a linear center
Agraïments: The first author is supported by FAPESP-BRAZIL grant 2007/06896-5 and CAPES-PROCAD-BRAZIL grant 035/2007. The second author is supported by FAPESP-Brazil Project 2011/13152-8 and by Programa Primeiros Projetos-PROPe/UNESP. The first and the third authors are also supported by the joint project CAPES-MECD grant PHB-2009-0025-PC This paper is
Buzzi, Claudio +2 more
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We show that discontinuous planar piecewise differential systems formed by linear centers and separated by two concentric circles can have at most three limit cycles.
Maria Elisa Anacleto +3 more
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The main goal of this paper is to provide the maximum number of crossing limit cycles of two different families of discontinuous piecewise linear differential systems.
Damene Loubna, Benterki Rebiha
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