1,608 research outputs found
Present values of lifetime earnings of college occupations
Economic returns analysis for some occupations entered by college graduates and applications to engineering and scientific labor marke
Starting Salaries of Engineers and Scientists
Starting salaries of engineers and scientists - patterns of demand affecting changes in salary since World War I
Demand for Engineers and Scientists
Manpower demands analyzed for engineers, physical scientists, and mathematicians in U.S.A
The Supply of Engineers and Scientists
Supply of trained personnel for engineering and scienc
Critical light scattering in liquids
We compare theoretical results for the characteristic frequency of the
Rayleigh peak calculated in one-loop order within the field theoretical method
of the renormalization group theory with experiments and other theoretical
results. Our expressions describe the non-asymptotic crossover in temperature,
density and wave vector. In addition we discuss the frequency dependent shear
viscosity evaluated within the same model and compare our theoretical results
with recent experiments in microgravity.Comment: 17 pages, 12 figure
Critical dynamics of diluted relaxational models coupled to a conserved density (diluted model C)
We consider the influence of quenched disorder on the relaxational critical
dynamics of a system characterized by a non-conserved order parameter coupled
to the diffusive dynamics of a conserved scalar density (model C). Disorder
leads to model A critical dynamics in the asymptotics, however it is the
effective critical behavior which is often observed in experiments and in
computer simulations and this is described by the full set of dynamical
equations of diluted model C. Indeed different scenarios of effective critical
behavior are predicted.Comment: 4 pages, 5 figure
Randomly dilute Ising model: A nonperturbative approach
The N-vector cubic model relevant, among others, to the physics of the
randomly dilute Ising model is analyzed in arbitrary dimension by means of an
exact renormalization-group equation. This study provides a unified picture of
its critical physics between two and four dimensions. We give the critical
exponents for the three-dimensional randomly dilute Ising model which are in
good agreement with experimental and numerical data. The relevance of the cubic
anisotropy in the O(N) model is also treated.Comment: 4 pages, published versio
Measurement of spin-dependent conductivities in a two-dimensional electron gas
Spin accumulation is generated by injecting an unpolarized charge current
into a channel of GaAs two-dimensional electron gas subject to an in-plane
magnetic field, then measured in a non-local geometry. Unlike previous
measurements that have used spin-polarized nanostructures, here the spin
accumulation arises simply from the difference in bulk conductivities for
spin-up and spin-down carriers. Comparison to a diffusive model that includes
spin subband splitting in magnetic field suggests a significantly enhanced
electron spin susceptibility in the 2D electron gas
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