1,695 research outputs found
Does following an “excellent” candidate in the Objective Structured Clinical Examination affect your checklist score?
Acknowledgements The authors would like to acknowledge Wai-Lum Sung from the Department of Medical Illustration at the University of Aberdeen for creation of Figure 1. Citation Brown, C., Nath, M., Watson, W. and Macleod, M.J. (2023), "Does following an “excellent” candidate in the objective structured clinical examination affect your checklist score?", Journal of Applied Research in Higher Education, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/JARHE-02-2023-0079 Funding Not applicablePeer reviewedPostprin
Observation of Scaling Violations in Scaled Momentum Distributions at HERA
Charged particle production has been measured in deep inelastic scattering
(DIS) events over a large range of and using the ZEUS detector. The
evolution of the scaled momentum, , with in the range 10 to 1280
, has been investigated in the current fragmentation region of the Breit
frame. The results show clear evidence, in a single experiment, for scaling
violations in scaled momenta as a function of .Comment: 21 pages including 4 figures, to be published in Physics Letters B.
Two references adde
Frobenius and the derived centers of algebraic theories
We show that the derived center of the category of simplicial algebras over
every algebraic theory is homotopically discrete, with the abelian monoid of
components isomorphic to the center of the category of discrete algebras. For
example, in the case of commutative algebras in characteristic , this center
is freely generated by Frobenius. Our proof involves the calculation of
homotopy coherent centers of categories of simplicial presheaves as well as of
Bousfield localizations. Numerous other classes of examples are discussed.Comment: 40 page
Spontaneous spatial fractal pattern formation in absorptive systems
We predict, for the first time to our knowledge, that purely-absorptive nonlinearity can support spontaneous spatial fractal pattern formation. A passive optical ring cavity with a thin slice of saturable absorber is analyzed. Linear stability analysis yields threshold curves for Turing (static) instabilities with features proposed as characteristics of potential fractal pattern formation. Numerical simulations of the fully-nonlinear dynamics, with both one and two transverse dimensions, confirm theoretical predictions
Clues to the origin of Fermi Bubbles from OVIII/OVII line ratio
We constrain the origin of Fermi Bubbles using 2D hydrodynamical simulations
of both star formation driven and black hole accretion driven wind models. We
compare our results with recent observations of OVIII to OVII line ratio within
and near Fermi Bubbles. Our results suggest that independent of the driving
mechanisms, a low luminosity ( erg
s) energy injection best reproduces the observed line ratio for which
the shock temperature is K. Assuming the Galactic halo
temperature to be K, we estimate the shock velocity to be km s for a weak shock. The corresponding estimated age of the Fermi
bubbles is Myr. Such an event can be produced either by a star
formation rate of M yr at the Galactic centre or a
very low luminosity jet/accretion wind arising from the central black hole. Our
analysis rules out any activity that generates an average mechanical luminosity
\ergps as a possible origin of the Fermi Bubbles.Comment: 14 pages, 9 figures, accepted version (MNRAS); includes updates on
the electron-proton equilibrium time scale and its implications for high
energy jet
Generalized Heisenberg's Dynamics
We formulate a dynamical system based on many-index objects. These objects
yield a generalization of the Heisenberg's equation. Systems describing
harmonic oscillators are given.Comment: PTPTEX, 8 page
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