1,721,270 research outputs found
Wyatt, R, 7532663
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/427454Surname: WYATT. Given Name(s) or Initials: R. Military Service Number or Last Known Location: 7532663. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 23553.250591
Item: [2016.0049.59715] "Wyatt, R, 7532663
Infra-red stimulated Raman generation effects of gain focusing on threshold and tuning behaviour
No full textIt is shown that for generation of infrared radiation by stimulated Raman scattering, the diffraction spread of the Stokes wave can have a significant effect on the threshold. Compared with an analysis in which gain focussing is neglected, the threshold powers may be much higher with a corresponding reduction in tuning range. The design of a Raman oscillator is considerably influenced by these diffraction effects, and also it is found that the Stokes wave is subject to frequency-pulling which is dependent on the pump power
Generation of tunable infrared radiation by stimulated Raman scattering in alkali vapours
Full text linkStimulated electronic Raman scattering in metal vapours provides a simple way of converting the tunable visible output of a pulsed dye laser into a tunable infrared output. Recent experimental results and their comparison with theoretical calculations will be presented
Using decision-aiding software, and participatory workshops, for better strategic management of a public authority
No full textThe authors conducted three participatory workshops with members of the Victorian Local Government Association (VLGA). The latter is a lobby group funded by local municipalities within the metropolis of Melbourne, Australia. The aim of our workshops was to strategically evaluate the possible directions that VLGA might take over the next ten years. The first workshop used “situation-structuring” software; the second employed “cognitive mapping”; and the third exploited a “strategic planning” program. Some software packages were more useful than others, as verified by both the authors’ observations and the participants’ post-workshop evaluations, and here we speculate why. We conclude that situation structuring software is extremely useful since it invariably generates classifications of underlying issues that are eminently plausible. On the other hand, the cognitive mapping software that we used is often confusing, easy to misapply and critically dependent on having an innovative facilitator for its success. Finally, “strategic planning” software, especially if it is of the self-improving kind, is potentially, very useful for better organizational planning. Nevertheless, the impact of our workshops on VLGA’s daily operations appears to have been negligible. Again, we speculate why, and we also relate our conclusions to those found in the decision-aiding literature
Using decision-aiding software, and participatory workshops, for better strategic management of a public authority
No full textThe authors conducted three participatory workshops with members of the Victorian Local Government Association (VLGA). The latter is a lobby group funded by local municipalities within the metropolis of Melbourne, Australia. The aim of our workshops was to strategically evaluate the possible directions that VLGA might take over the next ten years. The first workshop used “situation-structuring” software; the second employed “cognitive mapping”; and the third exploited a “strategic planning” program. Some software packages were more useful than others, as verified by both the authors’ observations and the participants’ post-workshop evaluations, and here we speculate why. We conclude that situation structuring software is extremely useful since it invariably generates classifications of underlying issues that are eminently plausible. On the other hand, the cognitive mapping software that we used is often confusing, easy to misapply and critically dependent on having an innovative facilitator for its success. Finally, “strategic planning” software, especially if it is of the self-improving kind, is potentially, very useful for better organizational planning. Nevertheless, the impact of our workshops on VLGA’s daily operations appears to have been negligible. Again, we speculate why, and we also relate our conclusions to those found in the decision-aiding literature
A high power widely tunable infra-red source based on stimulated electronic Raman scattering in Caesium vapour
No full textDye lasers pumped by the second harmonic of a ruby laser have been used to produce tunable stimulated electronic Raman scattering in caesium vapour. Using three different Raman transitions, the infrared tuning ranges were 2.5 -4.75µm. 5.67-8.65µm and 11.7-15µm with powers of up to 25kW, 7kW and 2kW respectively
A simple beam expander for frequency narrowing of dye lasers
No full textDesign considerations and performance of a prism beam expander are presented. Using a prism beam expander and holographic grating, a dye laser pumped by a nitrogen laser has given 15 kW of diffraction limited power in 0.1-0.2 /cm linewidth. Addition of a single etalon gave a single frequency output of 10 kW in a linewidth of less than 0.01 /cm
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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