Mackenzie Presbyterian University
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.

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National University of Singapore and Mackenzie Presbyterian University | Date: 2015-02-26

A method of transferring graphene to a polymeric substrate is disclosed herein. In a described embodiment, the method 400 comprises heating the polymeric substrate at 408 to at least partially melt the polymeric substrate; compressing the at least partially melted polymeric substrate against the graphene at 410 to form an intermediate graphene composite; and cooling the intermediate graphene composite at 412 to transfer the graphene to the polymeric substrate. Apparatuses for performing the transfer are also disclosed.

Arriola E.R.,University of Granada | Szpigelb S.,Mackenzie Presbyterian University | Timoteo V.S.,University of Campinas
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

Effective interactions can be obtained from a renormalization group analysis in two complementary ways. One can either explicitly integrate out higher energy modes or impose given conditions at low energies for a cut-off theory. While the first method is numerically involved, the second one can be solved almost analytically. In both cases we compare the outcoming effective interactions for the two nucleon system as functions of the cut-off scale and find a strikingly wide energy region where both approaches overlap, corresponding to relevant scales in light nuclei A ≲ 200 MeV. This amounts to a great simplification in the determination of the effective interaction parameters. © 2013 The Authors. Published by Elsevier B.V.

Arriola E.R.,University of Granada | Szpigel S.,Mackenzie Presbyterian University | Timoteo V.S.,University of Campinas
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

On a finite momentum grid with N integration points p n and weights wn (n = 1, ..., N) the Similarity Renormalization Group (SRG) with a given generator G unitarily evolves an initial interaction with a cutoff λ on energy differences, steadily driving the starting Hamiltonian in momentum space Hn,m0=pn2δn,m+Vn,m to a diagonal form in the infrared limit (λ→0), Hn,mG,λ→0=Eπ(n)δn,m, where π(n) is a permutation of the eigenvalues E n which depends on G. Levinson's theorem establishes a relation between phase-shifts δ(p n) and the number of bound-states, n B, and reads δ(p1) - δ(p N) = n Bπ. We show that unitarily equivalent Hamiltonians on the grid generate reaction matrices which are compatible with Levinson's theorem but are phase-inequivalent along the SRG trajectory. An isospectral definition of the phase-shift in terms of an energy-shift is possible but requires in addition a proper ordering of states on a momentum grid such as to fulfill Levinson's theorem. We show how the SRG with different generators G induces different isospectral flows in the presence of bound-states, leading to distinct orderings in the infrared limit. While the Wilson generator induces an ascending ordering incompatible with Levinson's theorem, the Wegner generator provides a much better ordering, although not the optimal one. We illustrate the discussion with the nucleon-nucleon (NN) interaction in the S01 and S13 channels. © 2014.

Giannini A.V.,University of Sao Paulo | Duraes F.O.,Mackenzie Presbyterian University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2013

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.

Tusnski L.R.M.,National Institute for Space Research | Valio A.,Mackenzie Presbyterian University
Astrophysical Journal | Year: 2011

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.

Tateyama C.E.,Mackenzie Presbyterian University | Tateyama C.E.,National Institute for Space Research
Astrophysical Journal, Supplement Series | Year: 2013

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..

Rosa H.G.,Mackenzie Presbyterian University | Steinberg D.,Mackenzie Presbyterian University | Thoroh De Souza E.A.,Mackenzie Presbyterian University
Optics Express | Year: 2014

In this paper we report the pulse evolution of a simultaneously mode-locked Erbium-doped fiber laser at 1556-nm-band and 1533-nmband. We explain the dual wavelength laser operation by means of net gain cross section variations caused by the population inversion rate dependence on the pump power. At 1556-nm-band, we observed pulse duration of 370 fs with bandwidth of 8.50 nm and, for pump power higher than150 mW, we observe the rise of a CW and mode-locked laser, sequentially, at 1533-nm-band. We show that both bands are simultaneously modelocked and operate at different repetition rates. ©2014 Optical Society of America

Popadiuk S.,Mackenzie Presbyterian University
International Journal of Information Management | Year: 2012

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.

Rosa H.G.,Mackenzie Presbyterian University | Thoroh De Souza E.A.,Mackenzie Presbyterian University
Optics Letters | Year: 2012

We present a study of pulse generation and propagation in erbium-doped fiber lasers with cavity length varying from 8 m to 3.5 km. We demonstrate that soliton effect determines the pulse stabilization in ultralong cavities, measuring pulses with an average 7.0 ps pulsewidth for cavity lengths between 2.25 and 3.5 km. We also demonstrate that, by filling fundamental soliton requirements, pulsewidth can be determined by length and total dispersion cavity parameters. © 2012 Optical Society of America.

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) | Year: 2013

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.

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