5,206 research outputs found
Learning (and Teaching) On The Job: Developing and Extending the Skills Needed to Deliver Information Literacy Workshops
This article aims to bolster confidence in early career librarians or other information professionals who may be new to delivering presentations to student groups. By sharing their experiences, three librarians discuss the skills needed and show that these skills can be developed. Tom Guest, who joined the library as an early career professional in 2015; Katherine Turner, a mid-career professional who has been with the organisation ten years and only took on teaching responsibilities four years ago; Karen Carney, who joined Leeds Beckett’s Academic Support Team in 2012 soon after ending a previous career in the Civil Service
Geometric structures on loop and path spaces
Is is known that the loop space associated to a Riemannian manifold admits a
quasi-symplectic structure. This article shows that this structure is not
likely to recover the underlying Riemannian metric by proving a result that is
a strong indication of the "almost" independence of the quasi-symplectic
structure with respect to the metric. Finally conditions to have contact
structures on these spaces are studied.Comment: Final version. To appear in Proceedings of Math. Sci. Indian Academy
of Science
Symmetry perspectives on some auxetic body-bar frameworks
Scalar mobility counting rules and their symmetry extensions are reviewed for
finite frameworks and also for infinite periodic frameworks of the bar-and-joint, body-joint
and body-bar types. A recently published symmetry criterion for the existence of equiauxetic
character of an infinite framework is applied to two long known but apparently little
studied hinged-hexagon frameworks, and is shown to detect auxetic behaviour in both. In
contrast, for double-link frameworks based on triangular and square tessellations, other affine
deformations can mix with the isotropic expansion mode.P.W. Fowler acknowledges support from the Royal Society/Leverhulme Trust in the form of a Senior
Research Fellowship for 2013. T. Tarnai is grateful for financial support under OKTA grant K81146.This is the final published version distributed under a Creative Commons Attribution License, which can also be found on the publisher's website at: http://www.mdpi.com/2073-8994/6/2/36
Noncommutative geometry, topology and the standard model vacuum
As a ramification of a motivational discussion for previous joint work, in
which equations of motion for the finite spectral action of the Standard Model
were derived, we provide a new analysis of the results of the calculations
herein, switching from the perspective of Spectral triple to that of Fredholm
module and thus from the analogy with Riemannian geometry to the pre-metrical
structure of the Noncommutative geometry. Using a suggested Noncommutative
version of Morse theory together with algebraic -theory to analyse the
vacuum solutions, the first two summands of the algebra for the finite triple
of the Standard Model arise up to Morita equivalence. We also demonstrate a new
vacuum solution whose features are compatible with the physical mass matrix.Comment: 24 page
Calculation of energy levels and transition amplitudes for barium and radium
The radium atom is a promising system for studying parity and time invariance
violating weak interactions. However, available experimental spectroscopic data
for radium is insufficient for designing an optimal experimental setup. We
calculate the energy levels and transition amplitudes for radium states of
significant interest. Forty states corresponding to all possible configurations
consisting of the , and single-electron states as well as the
states of the , and configurations have been calculated.
The energies of ten of these states corresponding to the , ,
, and configurations are not known from experiment. Calculations
for barium are used to control the accuracy.Comment: 12 pages, 4 table
Structural Topology Optimization: Moving Beyond Linear Elastic Design Objectives
Topology optimization is a systematic, free-form approach to the design of structures. It simultaneously optimizes material quantities and system connectivity, enabling the discovery of new, high-performance structural concepts. While powerful, this design freedom has a tendency to produce solutions that are unrealizable or impractical from a structural engineering perspective. Examples include overly complex topologies that are expensive to construct and ultra-slender subsystems that may be overly susceptible to imperfections. This paper summarizes recent tools developed by the authors capable of mitigating these shortcomings through consideration of (1) constructability, (2) nonlinear mechanics, and (3) uncertainties
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