7,037,403 research outputs found
The personal development planning cycle.
This Learning and CPD sheet is designed to pull together into a framework many of the activities that have already been published. It should also help anyone planning to go for audit of their CPD or who have been requested to submit for audit. There are a number of different ways of viewing the Personal Development Planning (PDP) or CPD cycle; the one covered here is just one example and shouldn't be seen as the only way of looking at PDP. For a greater range of activities, look at the book "Skills for Success: The Personal Development Planning Handbook" by Cottrell and the companion website
Entanglement of Conceptual Entities in Quantum Model Theory (QMod)
We have recently elaborated 'Quantum Model Theory' (QMod) to model situations
where the quantum effects of contextuality, interference, superposition,
entanglement and emergence, appear without the entities giving rise to these
situations having necessarily to be of microscopic nature. We have shown that
QMod models without introducing linearity for the set of the states. In this
paper we prove that QMod, although not using linearity for the state space,
provides a method of identification for entangled states and an intuitive
explanation for their occurrence. We illustrate this method for entanglement
identification with concrete examples
Stretching and folding processes in the 3D Euler and Navier-Stokes equations
Stretching and folding dynamics in the incompressible, stratified 3D Euler
and Navier-Stokes equations are reviewed in the context of the vector \bdB =
\nabla q\times\nabla\theta where q=\bom\cdot\nabla\theta. The variable
is the temperature and \bdB satisfies \partial_{t}\bdB =
\mbox{curl}\,(\bu\times\bdB). These ideas are then discussed in the context of
the full compressible Navier-Stokes equations where takes the two forms q
= \bom\cdot\nabla\rho and q = \bom\cdot\nabla(\ln\rho).Comment: UTAM Symposium on Understanding Common Aspects of Extreme Events in
Fluid
The free rigid body dynamics: generalized versus classic
In this paper we analyze the normal forms of a general quadratic Hamiltonian
system defined on the dual of the Lie algebra of real -
skew - symmetric matrices, where is an arbitrary real symmetric
matrix. A consequence of the main results is that any first-order autonomous
three-dimensional differential equation possessing two independent quadratic
constants of motion which admits a positive/negative definite linear
combination, is affinely equivalent to the classical "relaxed" free rigid body
dynamics with linear controls.Comment: 12 page
Shear viscosity in magnetized neutron star crust
The electron shear viscosity due to Coulomb scattering of degenerate
electrons by atomic nuclei throughout a magnetized neutron star crust is
calculated. The theory is based on the shear viscosity coefficient calculated
neglecting magnetic fields but taking into account gaseous, liquid and solid
states of atomic nuclei, multiphonon scattering processes, and finite sizes of
the nuclei albeit neglecting the effects of electron band structure. The
effects of strong magnetic fields are included in the relaxation time
approximation with the effective electron relaxation time taken from the
field-free theory. The viscosity in a magnetized matter is described by five
shear viscosity coefficients. They are calculated and their dependence on the
magnetic field and other parameters of dense matter is analyzed. Possible
applications and open problems are outlined.Comment: 6 pages, 3 figures, EPL, accepte
Magic number behavior for heat capacities of medium sized classical Lennard-Jones clusters
Monte Carlo methods were used to calculate heat capacities as functions of
temperature for classical atomic clusters of aggregate sizes that were bound by pairwise Lennard-Jones potentials. The parallel
tempering method was used to overcome convergence difficulties due to
quasiergodicity in the solid-liquid phase-change regions. All of the clusters
studied had pronounced peaks in their heat capacity curves, most of which
corresponded to their solid-liquid phase-change regions. The heat capacity peak
height and location exhibited two general trends as functions of cluster size:
for to 36, the peak temperature slowly increased, while the peak
height slowly decreased, disappearing by ; for , a very small
secondary peak at very low temperature emerged and quickly increased in size
and temperature as increased, becoming the dominant peak by .
Superimposed on these general trends were smaller fluctuations in the peak
heights that corresponded to ``magic number'' behavior, with local maxima found
at and 49, and the largest peak found at . These
magic numbers were a subset of the magic numbers found for other cluster
properties, and can be largely understood in terms of the clusters' underlying
geometries. Further insights into the melting behavior of these clusters were
obtained from quench studies and by examining rms bond length fluctuations.Comment: 15 pages, 17 figures (PDF format
LEC System Development
The Lajet Energy Company (LEC) 460 is described. A parabolic dish which incorporates a microprocessor to automatically point it toward the Sun from sunrise to sunset is used. The dish is composed of a set of mirrors (made of reflective polymeric film) which focus and concentrate the Sun's energy on a receiver, producing intense but controlled amounts of heat. The LEC 460 employs a design concept that permits the use of common and low cost materials. All major structural components are fabricated from low carbon, low alloy steel using methods adaptable to mass production. The mirrors are supported on a steel tubing frame. This frame is attached near its center of gravity to a cantilevered support structure. The mirrors and frame are counterbalanced by the weight of the receiver, thus reducing the energy needed to move the collector (parasitic load) and allowing movement on two axes. Each LEC 460 solar concentrator contains a reflective array consisting of twenty four 60 inch diameter mirrors
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