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On a conjecture by Mbekhta about best approximation by polar factors
(American Mathematical Society, 2021-11)
The polar factor of a bounded operator acting on a Hilbert space is the unique partial isometry arising in the polar decomposition. It is well known that the polar factor might not be a best approximant to its associated ...
Measuring the continuum polarization with ESPaDOnS
(European Southern Observatory, 2015)
Aims. Our goal is to test the feasibility of obtaining accurate measurements of the continuum polarization from high-resolution spectra using the spectropolarimetric mode of ESPaDOnS. Methods. We used the new pipeline OPERA ...
Comparison of Polar(®) RS800G3(™) heart rate monitor with Polar(®) S810i(™) and electrocardiogram to obtain the series of RR intervals and analysis of heart rate variability at rest
(Wiley-Blackwell, 2014)
The Polar(®) RS800G3(™) rate monitor was released in the market to replace the Polar(®) S810i(™) , and few studies have assessed that the RR series obtained by this equipment is reliable for analysis of heart rate variability ...
Singularidad de la polar de un germen de curva irreducible de género uno
(Pontificia Universidad Católica del PerúPE, 2017)
Polarization in the non-leptonic weak decays of spin-3/2 hyperons
(Revista Mexicana de Física, 2009)
Social polarization and conflict: a network approach
(Facultad de Ciencias Economicas - Universidad Nacional de Colombia, 2013)
Theoretically, polarization is associated with a higher probability of social conflict. This paper, in a microeconomic model based on the theory of social networks, analyses how changes in the network’s structure affect ...
Has the Middle Class Grown in Ecuador? An Analysis Using Income Polarization Indexes for the Period 2007 to 2014
This paper quantifies the evolution of the middle class in Ecuador between 2007 and 2014 by computing polarization and bipolarization indexes. The results show that polarization have steadily decline between 2007 and 2014 ...