110,110 research outputs found
“Home Again”: The Contrasting Experiences of Richard D. Dunphy and Lewis A. Horton
Union veterans returning home from the war in 1865 faced a myriad of experiences and reacted to the return to civilian life in a variety of ways. Richard D. Dunphy and Lewis A. Horton, both double-arm amputee veterans of the Navy, ably demonstrate the differences in experience and reaction to the war and life afterwards. [excerpt
Inflation with in Jordan frame
We consider an action that is non-minimally coupled to a massive
scalar field. The model closely resembles scalar-tensor theory and by conformal
transformation can be transformed to Einstein frame. To avoid the ambiguity of
the frame dependence, we obtain an exact analytical solution in Jordan frame
and show that the model leads to a period of accelerated expansion with an
exit. Further, we compute the scalar and tensor power spectrum for the model
and compare them with observations.Comment: 10 pages, 3 figure
Formation of nanocrystals based on decomposition in the amorphous Zr41.2Ti13.8Cu12.5Ni10Be22.5 alloy
Primary crystallization and decomposition in the bulk amorphous alloy Ar41.2Ti13.8Cu12.5Ni10Be22.5 have been studied by small angle neutron scattering (SANS), transmission electron microscopy (TEM), and differential scanning calorimetry (DSC). SANS data of samples annealed isothermally at 623 K exhibit an interference peak centered at q=0.46 nm(^-1) after an incubation time of about 100 min. TEM and DSC investigations confirm that the respective periodic variation in the scattering length density is due to the formation of nanocrystals embedded in the amorphous matrix. These observations suggest that during the incubation time a chemical decomposition process occurs and the related periodic composition fluctuations give rise to the observed periodic arrangement of the nanocrystals
Theory of the evolutionary minority game
We present a theory which describes a recently introduced model of an
evolving, adaptive system in which agents compete to be in the minority. The
agents themselves are able to evolve their strategies over time in an attempt
to improve their performance. The present theory explicitly demonstrates the
self-interaction, or so-called market impact, that agents in such systems
experience
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