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Article
A scientometrics law about co-authors and their ranking: the co-author core
Rather than “measuring” a scientist impact through the number of citations which his/her published work can have generated, isn’t it more appropriate to consider his/her value through his/her scientific networ...
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Article
Effects of agents' mobility on opinion spreading in Sznajd model
Under synchronous updating and allowing the agents to move in the lattice or underlying network, we find that the Sznajd model always reaches a consensus as a steady state, – because agent frustrations are ...
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Article
Clusters in weighted macroeconomic networks: the EU case. Introducing the overlap** index of GDP/capita fluctuation correlations
GDP/capita correlations are investigated in various time windows (TW), for the time interval 1990–2005. The target group of countries is the set of 25 EU members, 15 till 2004 plus the 10 countries which joine...
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Article
Magnetocaloric effect in nano- and polycrystalline manganite La0.7Ca0.3MnO3
La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol–gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The magnetic...
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Article
Drastic events make evolving networks
Co-authorship networks of neighbouring scientific disciplines, i.e. granular (G) media and networks (N) are studied in order to observe drastic structural changes in evolving networks. The data is taken from a...
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Article
Cluster structure of EU-15 countries derived from the correlation matrix analysis of macroeconomic index fluctuations
The statistical distances between countries, calculated for various moving average time windows, are mapped into the ultrametric subdominant space as in classical Minimal Spanning Tree methods. The Moving Aver...
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Article
High frequency (daily) data analysis of the Southern Oscillation Index. Tsallis nonextensive statistical mechanics approach
Daily data of the Southern Oscillation Index between 1999 and mid-2006 has been analyzed in order to obtain the shape and tails of the partial distribution functions (PDF) of the variability of the index. A m...
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Article
On the genre-fication of music: a percolation approach
We analyze web-downloaded data on people sharing their music library. By attributing to each music group usual music genres (Rock, Pop ...), and analysing correlations between music groups of different genres ...
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Article
Magneto-transport characterization of Dy123 monodomain superconductors
We consider textured materials of the DyBa2Cu3O7 type seeded with a Nd123 seed as initiator. They are grown with an excess 20% Dy211 phase on a Dy2O3 substrate. We report chemical characterization, electrical res...
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Article
Low-field magnetoresistance in La0.7Ca0.3MnO3 manganite compounds prepared by the spray drying technique
Calcium-substituted lanthanum manganite compounds were synthesized by the spray drying technique. This method—whose main advantages are versatility, high reproducibility and scalability—yields small grain mate...
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Article
Limit current density in 2D metallic granular packings
The electrical properties of a 2D packed metallic pentagons have been studied. The electrical characterization of such metallic pentagon heaps, like i-V measurements, has been achieved. Two distinct regimes have ...
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Article
Foam imbibition in microgravity
We report an experimental study of aqueous foam imbibition in microgravity with strict mass conservation. The foam is in a Hele-Shaw cell. The bubble edge width ℓ is measured by image analysis. The penetration...
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Article
Are EUR and GBP different words for the same currency?
The British Pound (GBP) is not part of the Euro (EUR) monetary system. In order to find out arguments on whether GBP should join the EUR or not correlations are calculated between GBP exchange rates with respect ...
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Article
Mechanistic approach to generalized technical analysis of share prices and stock market indices
Classical technical analysis methods of stock evolution are recalled, i.e. the notion of moving averages and momentum indicators. The moving averages lead to define death and gold crosses, resistance and support ...
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Article
False Euro (FEUR) exchange rate correlated behaviors and investment strategy
We have searched for correlations and anticorrelations with respect to currencies as CHF, DKK, JPY, and USD in order to understand the EUR behavior. In order to do so we have invented a false euro (FEUR) dating b...
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Article
Special issue on Econophysics
What is “Econophysics"? Who is an “econophysicist"? The coining of a new scientific term, composed of the names of two fields, traditionally considered to be far from each other, brings new dreams to investiga...
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Article
Simultaneous measurements of thermal diffusivity, thermal conductivity and thermopower with application to copper and ceramic superconductors
A home made experimental set-up allows us to measure the thermal conductivity, the thermopower and the thermal diffusivity simultaneously in the temperature range (20-300 K). Therefore the specific heat can be...
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Article
Two Peak Effect in GMR: A Chemical Effect?
We show that the synthesis conditions have a dramatic influence on the resistivity behavior of calcium and sodium doped LaMnO3. Several samples prepared by lowtemperature techniques exhibit a double-peaked curve ...
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Article
Phase Transition and Pattern of Self-Organized Microstructures in Presence of Mobile Impurities
A growth model starting from a surface and in presence of mobile nonreactive localized impurities has been studied for the statistical physics of the microstructure and the surface roughness through simulation...
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Article
Monte-Carlo analysis of tracer diffusion mechanisms in YBa2Cu3O6+c
A method for estimating, via the Monte-Carlo simulation, the most often realized diffusion mechanisms in 2D ordered structures is presented. Taking as an example the diffusion of oxygen ions in 123 — YBCO high te...
