6,230 research outputs found
J. Disher and friends
No full text"J. Disher VX 115879 2/8 VX 18925 2/8 Bn. I. McGillivray Reg McDermott VX 6469 2/8 A.I.B Laurie. Leng VX 63268. 2nd/8th Bn".J. Disher, VX 115879, 2/8 Battalion. VX 18925 2/8 Battalion. I. McGillivray. Reg McDermott, VX 6469, 2/8 Australian Infantry Battalion. Laurie Leng VX 63268. 2nd/8th Battalion
Wing camber control architectures based on SMA: numerical investigations
No full textBenefits in terms of aerodynamic efficiency, aeroelastic behaviour, stability and manoeuvrability performance coming from the adaptive variation of wing geometric (e.g. thickness and chamber) and mechanical (e.g. rigidity) parameters were widely proved. In this scenario, more and more efficient architectures based on innovative materials like shape memory alloys, piezoelectrics, magneto-rheologic fluids were ideated and related morphing ability was tested. Due to the large transmitted forces and deformations, for static applications, SMA based-on architectures were implemented. The essential idea of all these architectures is to integrate a SMA actuator, lacking of remarkable structural value, within a classical wing structure or within a suitably designed one. The main disadvantage of such architectures derives by the necessity of deforming a classical structure, not designed for reaching large displacements. In order to avoid these problems, in this work, the idea of integrating compliant structures by SMA elements, was considered. Some deformation strategies, focused on the wing aft part morphing, were ideated; related performance in terms of vertical displacement and rotation of the trailing edge was estimated by a FE approach. Each architecture is characterised by SMA rod elements able to guarantee large deformations and shape control under aerodynamic loads
Application of product data management within the product development process
No full textManufacturing companies need to be able to respond to customer demand quickly
and accurately. This requires the capability to manage product data effectively.
Product Data Management (PDM) systems have been identified as a solution to
deliver this capability by providing the right information to the right people at the
right time and in the right format.
The foundation of this research is that the concept of PDM is relevant and important
within the product development process. This research focuses upon how the PDM
concept is applied in practice to define and configure products and how it can be
integrated with other major information systems to enable an enterprise wide
information system. To enable the research aim, an extensive review of literature
was undertaken to investigate the effectiveness of PDM in enhancing the product
definition process and in creating an interface between different business functional
areas.
A survey ofPDM system usage was undertaken aimed at identifying the current level
of PDM usage within manufacturing enterprises in the UK. This was followed up by
three industrial case studies to provide some degrees of validation of the results
obtained. A need for effective one time order capture was identified from the three
case studies which led to the development of a model specification for a late product
configuration tool. A prototype system was produced to validate the design
specification and was successfully demonstrated to a collaborating company. During
the submission of this thesis, the collaborating company and the university are
working on funding a project to pursue with its implementation.
The work undertaken has firmly established the relevance ofPDM within the product
development process and the importance of effective interfaces between PDM and
other manufacturing information systems. The research will be of interest to small
and medium sized manufacturing companies searching solutions for improving the
management of their product data to enhance product definition and configuration
Diastolinus perforatus Leng and Mutchler 1914
No full textDiastolinus perforatus Leng and Mutchler, 1914 (not Sahlberg, 1823) Diastolinus perforatus (not Sahlberg, 1823); Leng and Mutchler 1914: 460 (in part, Martinique records only); Gebien 1938: 294 [413] (in part, Martinique records only); Blackwelder 1945: 524 (in part, Martinique records only); Marcuzzi 1957:128 (in part, Martinique records only). 1984: 78 (in part Martinique records only); Peck 2011a: 33 (in part, Martinique records only), 2011b: 29 (in part, Martinique records only), 2016: 160 (in part, Martinique records only); Peck et al. 2014: 84 (in part, Martinique records only); Soldati and Touroult 2014: 99 (in part, Martinique records only). Diastolinus hummelincki Marcuzzi 1962: 29 (in part, Martinique records only). Diastolinus mulsanti Marcuzzi and D’ Aguilar 1971:79 (in part, Martinique records only); Marcuzzi 1977: 19 (in part, Martinique records only), 1984: 77 (in part, Martinique records only), 2001: 251 (in part, Martinique? records only); Peck 2011b: 29 (in part, Martinique records only), 2016: 159 (in part, Martinique? records only); Soldati and Touroult 2014: 99 (in part, Martinique records only). Discussion. The records above apparently all refer to a single Martinique specimen, which we have not found. The identity of this specimen is unknown at this time, thus it is placed incertae sedis. In spite of three species names being involved, there is only a single record here. We can trace the record to Leng and Mutchler (1914), but no voucher has been found. It may originate earlier, but we have been unable to find it. In 1957, Marcuzzi did not cite a specimen for his Martinique record of D. perforatus in his table. In 1962, he dropped the D. perforatus record for Martinique, rather moving it to D. hummelincki with a “?” In 1977, D. hummelincki was replaced with D. mulsanti, and the Martinique record retained. Lastly, in 1984, the Martinique record for D. perforatus was reinstated by Marcuzzi, apparently forgetting he moved it to D. hummelincki / mulsanti, which was also retained. Peck (2011b, 2016) listed it twice, under two names, without understanding the records.Published as part of Hart, Charles J. & Ivie, Michael A., 2016, A Revision of the Genus Diastolinus Mulsant and Rey (Coleoptera: Tenebrionidae), pp. 485-540 in The Coleopterists Bulletin 70 (3) on pages 485-540, DOI: 10.1649/0010-065X-70.3.485, http://zenodo.org/record/695431
The development of research software engineering as a profession
No full textDr Joanna Leng at the School of Computing explores Research Software Engineering (RSE) as an emerging profession and how computing technology is core to many professions Research Software Engineering is a young and emerging profession. This article looks at how it compares to other more mature professions and how all these professions handle two factors that are particularly important to the RSE profession, the stability of computing technologies and the adoption of these computing technologies by each profession
Tephrochronology of marine sediments around the Island of Montserrat, Lesser Antilles volcanic arc
No full textThe recent history of the Soufrière Hills Volcano, Montserrat,
Lesser Antilles volcanic arc, is reconstructed using data obtained
from recently drilled submarine cores.Tephra layers in these
cores preserve a record of the volcanic history of Montserrat
back to ~250 ka on the basis of micropaleontology and stable
isotope stratigraphy. Stratigraphic relationships identified in the
cores collected in 2002 and 2005 document the fate of both
pyroclastic flows entering the ocean to the east of Montserrat
and carbonate-rich turbidites sourced from the carbonate platforms
surrounding the islands of the Lesser Antilles. Using oxygen
isotope stratigraphy, micropalaeontological analysis and
Carbon-14 dating, it can be shown that three significant volcanic
events, including the on-going eruption, have occurred over the
last 12 ka. Preceding this was a time of volcanic quiescence, with
three carbonate-rich turbidite events being documented in many
of the cores. Our data suggest that these events occurred during
Marine Isotope Stage 2, following the Last Glacial Maximum
(LGM) and onset of post-glacial sea level rise
Supplementary_Figures_Holocene_paper_250619 – Supplemental material for A century of anthropogenic environmental change in tropical Asia: Multi-proxy palaeolimnological evidence from Singapore’s Central Catchment
No full textSupplemental material, Supplementary_Figures_Holocene_paper_250619 for A century of anthropogenic environmental change in tropical Asia: Multi-proxy palaeolimnological evidence from Singapore’s Central Catchment by Letisha S Fong, Melanie J Leng and David Taylor in The Holocene</p
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