19,699 research outputs found
Estimating the Impacts of Climate Change on Mortality in OECD Countries
The major contribution of this study is to combines both climatic and macroeconomic factors simultaneously in the estimation of mortality using the capital city of 22 OECD countries from the period 1990 to 2008. The empirical results provide strong evidences that higher income and a lower unemployment rate could reduce mortality rates, while the increases in precipitation and temperature variation have significantly positive impacts on the mortality rates. The effects of changing average temperature on mortality rates in summer and winter are asymmetrical and also depend on the location. Combining the future climate change scenarios with the estimation outcomes show that mortality rates in OECD countries in 2100 will be increased by 3.77% to 5.89%.Climate change; mortality; panel data model
Universal conductance fluctuations in indium tin oxide nanowires
Magnetic field dependent universal conductance fluctuations (UCF's) are
observed in weakly disordered indium tin oxide nanowires from 0.26 K up to
K. The fluctuation magnitudes increase with decreasing temperature,
reaching a fraction of at K. The shape of the UCF
patterns is found to be very sensitive to thermal cycling of the sample to room
temperatures, which induces irreversible impurity reconfigurations. On the
other hand, the UCF magnitudes are insensitive to thermal cycling. Our measured
temperature dependence of the root-mean-square UCF magnitudes are compared with
the existing theory [C. W. J. Beenakker and H. van Houten, Phys. Rev. B
\textbf{37}, 6544 (1988)]. A notable discrepancy is found, which seems to imply
that the experimental UCF's are not cut off by the thermal diffusion length
, as would be expected by the theoretical prediction when , where is the electron dephasing length. The approximate
electron dephasing length is inferred from the UCF magnitudes and compared with
that extracted from the weak-localization magnetoresistance studies. A
reasonable semiquantitative agreement is observed.Comment: 11 pages, 9 figure
Investigation of the 1+1 dimensional Thirring model using the method of matrix product states
We present preliminary results of a study on the non-thermal phase structure
of the (1+1) dimensional massive Thirring model, employing the method of matrix
product states. Through investigating the entanglement entropy, the fermion
correlators and the chiral condensate, it is found that this approach enables
us to observe numerical evidence of a Kosterlitz-Thouless phase transition in
the model.Comment: 7 pages, 4 figures; contribution to the proceedings of Lattice 2018
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