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Published Articles

Posledne pridané:
2015-05-04
16:25
Radiation tolerance of an SLVS receiver based on commercial components / Belloni, A (Maryland U.) ; Grassi, T (Maryland U.) ; Nogima, H (Rio de Janeiro State U.) ; Vaz, M (Rio de Janeiro, CBPF (Retired from))
The capability of ProASIC3L FPGAs to receive SLVS signals has been studied in laboratory conditions and after irradiation. The irradiation has been performed using a Cs-137 source. [...]
2014 - Published in : J. Instrum. 9 (2014) P03008 Springer Open Access article: PDF;

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2015-05-04
07:53
Leveraging History for Faster Sampling of Online Social Networks / Zhou, Zhuojie ; Zhang, Nan ; Das, Gautam
How to enable efficient analytics over such data has been an increasingly important research problem. Given the sheer size of such social networks, many existing studies resort to sampling techniques that draw random nodes from an online social network through its restrictive web/API interface. [...]
arXiv:1505.00079.- 2015 External link: Preprint

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2015-05-04
07:53
Nash equilibrium and evolutionary dynamics in semifinalists' dilemma / Baek, Seung Ki ; Son, Seung-Woo ; Jeong, Hyeong-Chai
We consider a tournament among four equally strong semifinalists. The players have to decide how much stamina to use in the semifinals, provided that the rest is available in the final and the third-place playoff. [...]
arXiv:1505.00071.- 2015 - 12 p. - Published in : Phys. Rev. E 91 (2015) 042144 External link: Preprint

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2015-05-04
07:53
A New Resource for College Distance Education Astronomy Laboratory Exercises / Vogt, Nicole P ; Cook, Stephen P ; Muise, Amy Smith
This article introduces a set of distance education astronomy laboratory exercises for use by college students and instructors and discuss first usage results. This General Astronomy Education Source (GEAS) exercise set contains eight two-week projects designed to guide students through both core content and mathematical applications of general astronomy material. [...]
arXiv:1505.00051.- 2015 - 7 p. - Published in : American Journal of Distance Education, 27(3), 189-200 External link: Preprint

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2015-05-04
07:52
Nonproportionality in the scintillation light yield of bismuth germanate / Gentile, T R ; Bales, M J ; Breuer, H ; Chupp, T E ; Coakley, K J ; Cooper, R L ; Nico, J S ; O'Neill, B
We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. [...]
arXiv:1505.00165.- 2015 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 784 (2015) 88-92 External link: Preprint

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2015-05-04
07:51
Geodesic flows around charged black holes in two dimensions / Kuniyal, Ravi Shankar ; Uniyal, Rashmi ; Nandan, Hemwati ; Zaidi, Alia
We study the evolution of timelike geodesics for two dimensional black hole spacetimes arising in string theory and general theory of relativity by solving the Raychaudhuri equation for expansion scalar as an initial value problem. The possibility of geodesic focusing/defocusing is then examined accordingly with different settings of black hole parameters. [...]
arXiv:1505.00103.- 2015 - 8 p. - Published in : Astrophys. Space Sci. 357 (2015) 1 External link: Preprint

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2015-05-04
07:50
Correlation between Galaxy Mergers and Luminous AGN / Hong, Jueun ; Im, Myungshin ; Kim, Minjin ; Ho, Luis C
It is not yet clear what triggers the activity of active galactic nuclei (AGNs), but galaxy merging has been suspected to be one of the main mechanisms fuelling the activity. Using deep optical images taken at various ground-based telescopes, we investigate the fraction of galaxy mergers in 39 luminous AGNs (M$_{R}\, \lesssim$ -22.6 mag) at $z \leq$ 0.3 (a median redshift of 0.155), of which the host galaxies are generally considered as early-type galaxies. [...]
arXiv:1505.00230.- 2015 - 57 p. - Published in : Astrophys. J. 804 (2015) 34 External link: Preprint

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2015-05-04
07:50
Rayleigh-Taylor Unstable Flames -- Fast or Faster? / Hicks, E P
Rayleigh-Taylor (RT) unstable flames play a key role in the explosions of Type Ia supernovae. However, the dynamics of these flames is still not well-understood. [...]
arXiv:1505.00025.- 2015 - 28 p. - Published in : The Astrophysical Journal, vol. 803, no. 2, p. 72, 2015 External link: Preprint

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2015-05-02
07:32
Transition state trajectory stability determines barrier crossing rates in chemical reactions induced by time-dependent oscillating fields / Craven, Galen T ; Bartsch, Thomas ; Hernandez, Rigoberto
When a chemical reaction is driven by an external field, the transition state that the system must pass through as it changes from reactant to product -for example, an energy barrier- becomes time-dependent. We show that for periodic forcing the rate of barrier crossing can be determined through stability analysis of the non-autonomous transition state. [...]
arXiv:1504.08356.- 2015 - Published in : J. Chem. Phys. 1 (2014) 041106 External link: Preprint

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2015-05-02
07:32
Chemical reactions induced by oscillating external fields in weak thermal environments / Craven, Galen T ; Bartsch, Thomas ; Hernandez, Rigoberto
Chemical reaction rates must increasingly be determined in systems that evolve under the control of external stimuli. In these systems, when a reactant population is induced to cross an energy barrier through forcing from a temporally varying external field, the transition state that the reaction must pass through during the transformation from reactant to product is no longer a fixed geometric structure, but is instead time-dependent. [...]
arXiv:1504.08354.- 2015 - Published in : J. Chem. Phys. 142 (2015) 074108 External link: Preprint

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