41,664 research outputs found
Enterprise and employability: to conflate or not to conflate?
Back in 1992, Watts and Hawthorn provided definitions of ‘enterprise’ that could subsume the concept of employability. They argued that enterprise may be about: helping students set up a business; working within an enterprise (organisation); or being enterprising, innovating and creative. Their comments were made in the context of the Enterprise in Higher Education programme, which ran for eight years until 1996. This predated the nomenclature ‘employability’, but ran alongside traditional employability elements such as career development learning. More recent enterprise initiatives (for example the National Centre for Graduate Entrepreneurship) have focused more specifically on entrepreneurship, innovation and knowledge transfer, not on employability
Reflection: A critical look at the use of metaphors in the development of electronic learning resources
Large-N droplets in two dimensions
Using lattice effective field theory, we study the ground state binding
energy of N distinct particles in two dimensions with equal mass interacting
weakly via an attractive SU(N)-symmetric short range potential. We find that in
the limit of zero range and large N, the ratio of binding energies
B_{N}/B_{N-1} approaches the value 8.3(6).Comment: 18 pages, 6 figures, version to appear in Phys. Rev.
Studies of Birds and Mammals in the Baird and Schwatka Mountains, Alaska
In 1963 a joint University of Alaska-Smithsonian Institution crew worked at
five locations in the Baird and Schwatka mountains in northwestern Alaska, conducting an ecological reconnaissance and faunal and floral inventory. Standard methods of observation and collection were used. Camps in the Kobuk drainage were located in the Redstone River valley and at Walker Lake, both on the margin of the taiga. The Noatak valley was represented by one camp each in the lower, middle, and upper reaches of the river, all in tundra. A summary of pre-1963 ornithological work in the region is presented. Significant records of distribution and/or breeding were obtained for the following birds: Podiceps grisegena,
Anas platyrhynchos, Aythya valisineria, Histrionicus histrionicus, Melanitta perspicillata, Mergus merganser, Aphrizia virgata, Bartramia longicauda, Actitis macularia, Tringa flavipes, Phalaropus fuficarius, Lobipes lobatus, Larus hyperboreus,Xema sabini, Sayornis saya, Nuttalornis borealis, Eremophilia alpestris, Tachycineta thalassina, Riparia riparia, Petrochelidon pyrrhonota, Phylloscopus borealis, Dendroica petechia, Leucosticte tephrocotis, Zonotrichia atricapilla, Calcarius pictus; and the mammal, Spermophilus undulatus. Good series of Cletihrionomys rutilius (350) and Microtus miurus (147) have been deposited in the University of Alaska Museum. Severe doubt has been raised
regarding the validity of the standard three-night trap grid for population estimation under wet conditions in arctic areas
Magnetic Solutions to 2+1 Gravity
We report on a new solution to the Einstein-Maxwell equations in 2+1
dimensions with a negative cosmological constant. The solution is static,
rotationally symmetric and has a non-zero magnetic field. The solution can be
interpreted as a monopole with an everywhere finite energy density.Comment: 9 pages, harvmac; we correct a reference and a typ
Data revisions and the identification of monetary policy shocks
Monetary policy research using time series methods has been criticized for using more information than the Federal Reserve had available in setting policy. To quantify the role of this criticism, we propose a method to estimate a VAR with real-time data while accounting for the latent nature of many economic variables, such as output. Our estimated monetary policy shocks are closely correlated with a typically estimated measure. The impulse response functions are broadly similar across the methods. Our evidence suggests that the use of revised data in VAR analyses of monetary policy shocks may not be a serious limitation.Monetary policy
Charged Particle Motion in a Highly Ionized Plasma
A recently introduced method utilizing dimensional continuation is employed
to compute the energy loss rate for a non-relativistic particle moving through
a highly ionized plasma. No restriction is made on the charge, mass, or speed
of this particle. It is, however, assumed that the plasma is not strongly
coupled in the sense that the dimensionless plasma coupling parameter
g=e^2\kappa_D/ 4\pi T is small, where \kappa_D is the Debye wave number of the
plasma. To leading and next-to-leading order in this coupling, dE/dx is of the
generic form g^2 \ln[C g^2]. The precise numerical coefficient out in front of
the logarithm is well known. We compute the constant C under the logarithm
exactly for arbitrary particle speeds. Our exact results differ from
approximations given in the literature. The differences are in the range of 20%
for cases relevant to inertial confinement fusion experiments. The same method
is also employed to compute the rate of momentum loss for a projectile moving
in a plasma, and the rate at which two plasmas at different temperatures come
into thermal equilibrium. Again these calculations are done precisely to the
order given above. The loss rates of energy and momentum uniquely define a
Fokker-Planck equation that describes particle motion in the plasma. The
coefficients determined in this way are thus well-defined, contain no arbitrary
parameters or cutoffs, and are accurate to the order described. This
Fokker-Planck equation describes the longitudinal straggling and the transverse
diffusion of a beam of particles. It should be emphasized that our work does
not involve a model, but rather it is a precisely defined evaluation of the
leading terms in a well-defined perturbation theory.Comment: Comments: Published in Phys. Rep. 410/4 (2005) 237; RevTeX, 111
Pages, 17 Figures; Transcription error corrected in temperature equilibration
rate (3.61) and (12.44) which replaces \gamma-2 by \gamma-
Pressure inequalities for nuclear and neutron matter
We prove several inequalities using lowest-order effective field theory for
nucleons which give an upper bound on the pressure of asymmetric nuclear matter
and neutron matter. We prove two types of inequalities, one based on convexity
and another derived from shifting an auxiliary field.Comment: 16 pages, published journal version - includes inequalities for spin
polarized system
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