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29 papers · 1 filter
A family-network model for wealth distribution in societies
R. Coelho, Z. Neda, J. J. Ramasco +1
A model based on first-degree family relations network is used to describe the wealth distribution in societies. The network structure is not a-priori introduced in the model, it i…
Small-scale anisotropy and intermittency in high and low-latitude solar wind
A. Bigazzi, L. Biferale, S. M. A. Gama +1
We analyze low and high--latitude fast solar wind data from the Ulysses spacecraft from 1992 to 1994 using a a systematic method to analyse the anisotropic content of the magnetic…
Ranking Pages by Topology and Popularity within Web Sites
Jose Borges, Mark Levene
We compare two link analysis ranking methods of web pages in a site. The first, called Site Rank, is an adaptation of PageRank to the granularity of a web site and the second, call…
The Spectra of Lamplighter Groups and Cayley Machines
Mark Kambites, Pedro V. Silva, Benjamin Steinberg
We calculate the spectra and spectral measures associated to random walks on restricted wreath products of finite groups with the infinite cyclic group, by calculating the Kesten-v…
Site Evaluation and RFI spectrum measurements in Portugal at the frequency range 0.408-10 GHz for a GEM polarized galactic radio emission experiment
R. Fonseca, D. Barbosa, L. Cupido +3
We probed for Radio Frequency Interference (RFI) for the three potential Galactic Emission Mapping Experiment (GEM) sites at Portugal using custom made omnidirectional disconic ant…
The coincidence problem in linear dark energy models
P. P. Avelino
We show that a solution to the the coincidence problem can be found in the context of a generic class of dark energy models with a scalar field, , with a linear effective potent…