29,154 research outputs found
Public spending on education in the UK: prepared for the Education and Skills Select Committee
This note is based on analysis prepared by Alissa Goodman and Luke Sibieta of the Institute for Fiscal Studies at the request of the House of Commons Education and Skills Select Committee, for their inquiry into Public Expenditure on Education and Skills being carried out during June and July 2006.
The note discusses some key issues that have arisen in education spending in the last year. We begin by examining the significance of the Chancellor's statements in Budget 2006 - both regarding school capital expenditure and the pledge to increase funding per pupil in the state sector to that currently seen in the private sector. We then move on to what the Comprehensive Spending Review in 2007 is likely to mean for education, given commitments in other areas of government spending. An Appendix contains some information about overall trends in public spending on education in the UK, and the international context
States of fermionic atoms in an optical superlattice across a Feshbach resonance
We investigate states of fermionic atoms across a broad Feshbach resonance in
an optical superlattice which allows interaction only among a small number of
lattice sites. The states are in general described by superpositions of atomic
resonating valence bonds and dressed molecules. As one scans the magnetic
field, level crossing is found between states with different symmetry
properties, which may correspond to a quantum phase transition in the many-body
case.Comment: 10 pages, 11 figure
Test of Particle-Assisted Tunneling for Strongly Interacting Fermions in an Optical Superlattice
Fermions in an optical lattice near a wide Feshbach resonance are expected to
be described by an effective Hamiltonian of the general Hubbard model with
particle-assisted tunneling rates resulting from the strong atomic interaction
[Phys. Rev. Lett. 95, 243202 (2005)]. Here, we propose a scheme to
unambiguously test the predictions of this effective Hamiltonian through
manipulation of ultracold atoms in an inhomogeneous optical superlattice. The
structure of the low-energy Hilbert space as well as the particle assisted
tunneling rates can be inferred from measurements of the time-of-flight images.Comment: 4 pages, 4 figure
Digital filter suppresses effects of nonstatistical noise bursts on multichannel scaler digital averaging systems
Digital filter suppresses the effects of nonstatistical noise bursts on data averaged over multichannel scaler. Interposed between the sampled channels and the digital averaging system, it uses binary logic circuitry to compare the number of counts per channel with the average number of counts per channel
Scintillation Caustics in Planetary Occultation Light Curves
We revisit the GSC5249-01240 light curve obtained during its occultation by
Saturn's North polar region. In addition to refractive scintillations, the
power spectrum of intensity fluctuations shows an enhancement of power between
refractive and diffractive regimes. We identify this excess power as due to
high amplitude spikes in the light curve and suggest that these spikes are due
to caustics associated with ray crossing situations. The flux variation in
individual spikes follows the expected caustic behavior, including diffraction
fringes which we have observed for the first time in a planetary occultation
light curve. The presence of caustics in scintillation light curves require an
inner scale cut off to the power spectrum of underlying density fluctuations
associated with turbulence. Another possibility is the presence of gravity
waves in the atmosphere. While occultation light curves previously showed the
existence of refractive scintillations, a combination of small projected
stellar size and a low relative velocity during the event have allowed us to
identify caustics in this occultation. This has led us to re-examine previous
data sets, in which we have also found likely examples of caustics.Comment: 4 pages, 3 figures; ApJL submitte
E-Choice option for Elsevier's Science/Direct
If there's one thing that seems to be as reliable as the rising sun, it's that each year brings a new ScienceDirect pricing scheme from Elsevier. This might be seen in the positive context of flexibility and a willingness to adapt and/or learn. With E-Choice Elsevier has formally adopted the perspective of those institutions for which quality trumps quantity
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