171,930 research outputs found
The Asian Recession and Northern Labour Markets.
As debt work-outs facilitate recovery from Asia'a recession, GDP there can be expected to rise and manufactured exports to expand. Asian imports and investment will remain low, however, as crisis-enhanced foreign debt is serviced and domestic savings continue to be sent abroad. Superficially, the surge in labour intensive manufactured exports and the associated real appreciation in the north could see northern workers disadvantaged.UNEMPLOYMENT ; WAGES ; TRADE ; RECESSION
The structural, mechanical, electronic, optical and thermodynamic properties of t-XAs (X Si, Ge and Sn) by first-principles calculations
The structural, mechanical, electronic, optical and thermodynamic properties
of the t-XAs (X Si, Ge and Sn) with
tetragonal structure have been investigated by first principles calculations.
Our calculated results show that these compounds are mechanically and
dynamically stable. By the study of elastic anisotropy, it is found that the
anisotropic of the t-SnAs is stronger than that
of t-SiAs and
t-GeAs. The band structures and density of states
show that the t-XAs (Si, Ge and Sn) are
semiconductors with narrow band gaps. Based on the analyses of electron density
difference, in t-XAs As atoms get electrons, X
atoms lose electrons. The calculated static dielectric constants,
, are 15.5, 20.0 and 15.1 eV for
t-XAs (X Si, Ge and Sn), respectively. The
Dulong-Petit limit of t-XAs is about 10 J
molK. The thermodynamic stability successively
decreases from t-SiAs to
t-GeAs to t-SnAs.Comment: 14 pages, 10 figures, 6 table
Nonet Singlet-Octet Mixing Angle, Strange Quark Mass, and Strange Quark Condensate
Two strategies are taken into account to determine the
- mixing angle . (i) First, using the
Gell-Mann-Okubo mass formula together with the - mixing
angle extracted from the data for , and , gave . (ii) Second, from the study of the ratio for
and branching
fractions, we have two-fold solution or
. Combining these two analyses, we thus obtain
. We further compute the strange quark mass
and strange quark condensate from the analysis of the
mass difference QCD sum rule, where the operator-product-expansion series is up
to dimension six and to accuracy.
Using the average of the recent lattice results and the value that we
have obtained as inputs, we get .Comment: 10 pages, 1 table, published versio
Edge and bulk merons in double quantum dots with spontaneous interlayer phase coherence
We have investigated nucleation of merons in double quantum dots when a
lateral distortion with a reflection symmetry is present in the confinement
potential. We find that merons can nucleate both inside and at the edge of the
dots. In addition to these merons, our results show that electron density
modulations can be also present inside the dots. An edge meron appears to have
approximately a half integer winding number.Comment: 5 pages, 4 figures, Proceedings of 17th International Conference on
High Magnetic Fields in Semiconductor Physic
Global Hilbert Expansion for the Vlasov-Poisson-Boltzmann System
We study the Hilbert expansion for small Knudsen number for the
Vlasov-Boltzmann-Poisson system for an electron gas. The zeroth order term
takes the form of local Maxwellian: $ F_{0}(t,x,v)=\frac{\rho_{0}(t,x)}{(2\pi
\theta_{0}(t,x))^{3/2}} e^{-|v-u_{0}(t,x)|^{2}/2\theta_{0}(t,x)},\text{\
}\theta_{0}(t,x)=K\rho_{0}^{2/3}(t,x).t=0u_00\leq t\leq \varepsilon
^{-{1/2}\frac{2k-3}{2k-2}},\rho_{0}(t,x) u_{0}(t,x)\gamma=5/3$
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