453 research outputs found
Shaping your department's success: an audit tool for language departments in higher education
Shaping a successful future for languages means shaping a successful future for language departments. This audit is designed to help staff form a holistic view of the strengths and weaknesses of their department with particular attention to 1) Institutional context and strategy, 2) Research, 3) Teaching and learning, 4) Curriculum, 5) Public engagement and 6) Staff roles and staff development. The tool helps to identify where action is needed and assists in developing an action plan to address weaknesses and consolidate existing strengths. The audit can be used by individuals as a managerial tool, but it is better suited to being used a discussion document in a group exercis
The UK Teaching Excellence Framework (TEF) as an illustration of Baudrillard's hyperreality
This article examines the 'Teaching Excellence Framework' (TEF) for UK universities through the lens of Jean Baudrillard's concept of hyperreality. I argue that the TEF is a hyperreal simulacrum, a sign which has no traceable genealogy to the practice of learning and teaching
Controlled fabrication of tunable delay using compound phase shifted resonators
Fine tuned, narrowband group delay (âslow lightâ) is obtained using a compound phase shifted grating and superposing resonances. Both simulation and experiments are reported
New theory of femtosecond induced changes and nanopore formation
Recent results confirm the presence of molecular oxygen proving that
recombination of dissociated silica bonds does not occur. This combined with
the observation of nanopores within the nanograting structure in silica, leads
to a new interpretation of femtosecond processing based on the unusual
characteristics of quenching of tetrahedral silica compared to other glasses.
This new approach suggests very different directions and implications for
devices, including sensors, based on femtosecond laser processing of glasses.Comment: Submitted to 3rd Asia Pacific Optical Sensors Conference, Sydney,
Australi
Response Fibre Bragg Grating (FBG) strain sensors embedded at different locations through the thickness around a delamination in a composite lamina
A few FBG strain sensors were embedded at a vicinity
of delamination of a laminated composite plate.
Reflected spectra of FBG sensors which located in the
same layer as the delamination and one layer above the
delamination were investigated in order to understand the
change of the reflected spectra due to stress
concentrations at the delamination. The reflected
waveforms of sensors were broadened with the increase
of loading, as expected. A considerable difference in
the response of two sensors was observed during both
uniaxial and flexural loading. These differences show
that the FBG sensors are capable of capturing the precise
nature of the delamination under various loading
conditions. Further, these observations provide
evidence of the feasibility of using FBG sensor responses
obtained from various locations allows the location of
the delamination to be determined. This paper details
some new and interesting findings of the use of spectral
shapes and strain measurements from embedded FBG
sensors in damage detection
Alien Registration- Canning, John R. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/24289/thumbnail.jp
Mechanical strength of silica fiber splices after exposure to extreme temperatures
By using a combination of type-I and regenerated gratings, the mechanical strength of optical fiber splices after exposure to temperatures over 1300 C was characterized. Splice strength was found to decrease with temperature with a secondorder polynomial dependence after exposure to environments hotter than 500 C. Splices exposed to temperatures above 1300 C were 80% more fragile than non-exposed splices. The lack of optical attenuation and the narrowing distribution of breaking strengths for higher temperatures suggest surface damage mechanisms, such as hydrolysis, play a key role in weakening post-heating and that damage mechanisms dominate over strengthening induced by crack melting
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