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Sao Paulo, Brazil

Mackenzie Presbyterian University is a private university in São Paulo, Brazil.The Mackenzie Presbyterian University is an institution of higher learning that has strong tradition and history in Brazil. It has campuses for undergraduate and postgraduate studies in São Paulo , Campinas, Barueri , Brasilia, Recife and Rio de JaneiroFounded in 1870 as the American School, Mackenzie is one of the oldest institutions of higher education in Brazil. The university is regarded nationally and internationally as a center of excellence having graduated numerous important names in Brazilian history. Apart from its main campus in São Paulo, Mackenzie University has campuses in the city of Barueri as well as in Brasília, Campinas, Recife, and Rio de Janeiro for postgraduate and continuing education.The nickname "Mackenzista" is often used to refer to present or former students of Mackenzie. Wikipedia.

Tusnski L.R.M.,National Institute for Space Research | Valio A.,Mackenzie Presbyterian University
Astrophysical Journal

Since the discovery of the first exoplanets, those most adequate for life to begin and evolve have been sought. Due to observational bias, however, most of the discovered planets so far are gas giants, precluding their habitability. However, if these hot Jupiters are located in the habitable zones of their host stars, and if rocky moons orbit them, then these moons may be habitable. In this work, we present a model for planetary transit simulation considering the presence of moons and planetary rings around a planet. The moon's orbit is considered to be circular and coplanar with the planetary orbit. The other physical and orbital parameters of the star, planet, moon, and rings can be adjusted in each simulation. It is possible to simulate as many successive transits as desired. Since the presence of spots on the surface of the star may produce a signal similar to that of the presence of a moon, our model also allows for the inclusion of starspots. The result of the simulation is a light curve with a planetary transit. White noise may also be added to the light curves to produce curves similar to those obtained by the CoRoT and Kepler space telescopes. The goal is to determine the criteria for detectability of moons and/or ring systems using photometry. The results show that it is possible to detect moons with radii as little as 1.3 R ⊕ with CoRoT and 0.3 R ⊕ with Kepler. © 2011. The American Astronomical Society. All rights reserved. Source

Giannini A.V.,University of Sao Paulo | Duraes F.O.,Mackenzie Presbyterian University
Physical Review D - Particles, Fields, Gravitation and Cosmology

In this paper we use an eikonalized minijet model where the effects of the first nonlinear corrections to the DGLAP equations are taken into account. The contributions coming from gluon recombination effects are included in the DGLAP+GLRMQ approach for the free proton in the context of saturation models. The parameters of the model are fixed to fit total pp and p̄p cross sections, including the very recent data from LHC, HiRes, and Pierre Auger collaborations. Glauber and multiple scattering approximations are then used to describe the inclusive inelastic proton-Air cross section. Photoproduction cross sections, without change of parameters fixed before, are also obtained from the model using vector meson dominance and the additive quark model. We show and discuss our main results as well as the implications of saturation effects in the behavior of total hadronic and photonic cross sections at very high energies. © 2013 American Physical Society. Source

Popadiuk S.,Mackenzie Presbyterian University
International Journal of Information Management

This paper presents a scale developed to classify organizations through cluster analysis as being exploiters, explores, ambidextrous or with no defined orientation. The theoretical framework helps identify that the concepts associated with exploration and exploitation may be classified into six practical dimensions: organizational knowledge practices, innovative practices, competition, strategic orientation, organizational efficiency and partnerships. After stripping the data, the scale was underpinned by 45 attributes related to these dimensions. Convergent and divergent validity statistics are presented resulting from a questionnaire being applied to 249 respondents from companies located in Brazil. © 2011 Elsevier Ltd. All rights reserved. Source

Tateyama C.E.,Mackenzie Presbyterian University | Tateyama C.E.,National Institute for Space Research
Astrophysical Journal, Supplement Series

In this work we show the results obtained from the Very Long Baseline Array data at 15 GHz of OJ287 in super-resolution mode. The data showed a jet configuration in the form of a "fork" where superluminal components emerge via stationary components at the northwest and the southeast close to the core to form parallel trajectories along the southwest direction in the plane of sky. This agrees with a source structure of an extended, broad morphology of OJ287. © 2013. The American Astronomical Society. All rights reserved.. Source

De Oliveira P.P.B.,Mackenzie Presbyterian University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

A recurring and well studied benchmark problem in the context of computations with cellular automata is the attempt to determine which is the most frequent cell state in an arbitrary initial configuration. Although extremely simple in formulation, the problem has unveiled a rich web of conceptual connections which, at the same time, have enlarged and challenged our understanding about how to perform computations within cellular automata. Here, we outline such a conceptual web, and provide a personal assessment of some of its loose ends, with possibly fruitful paths to address them. © 2013 Springer-Verlag. Source

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