3,877 research outputs found
Pioneer personal history of Andrew Lamb
No full textTypescript of answers by Andrew Lamb for a questionnaire filled out for Utah Works Progress Administration\u27s "Pioneer personal history" survey. He was born in Wisconsin in 1853, and the family came to Utah in 1860, settling first at Payson and later at Mount Carmel. Interviewed by Vern S. Olson in 193
Linear Frequency - Brooch Series
No full textSeries of three brooches completed in September 2023.
They are made using titanium, 18ct yellow gold, white gold, and silver - Dimensions: 43 x 43 x 7 mm.
Exhibitions to date:
'Linear Frequency' at the Scottish Gallery, Edinburgh (2nd November 2023 - 25th November 2023)
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'Close to Hand' Craft Scotland, Collect, Somerset House, London (29th February - 3rd March 2024)
‘Linear Frequency’, my 4th solo exhibition, an exhibition of new jewellery and items from my archive, including sketchbooks, 3D paper models, metal experiments, and samples.
'Close to Hand at Collect - The Leading International Fair For Contemporary Craft and Design’, a juried exhibition, showcased new work from 12 Scotland-based makers: Andrew Lamb, Emma Louise Wilson, Heather McDermott, Iona Turner, Jo McDonald, Jo Walker, Katie Charleson, Liu Qiwei, Marianne Anderson, Richard Goldsworthy, Stefanie Ying Lin Cheong, and Susie Redman
Andrew Stoops home exterior view, circa 1880s
No full textBlack-and-white photograph of Andrew Stoope's home located on 8th and Pine Street located in Chattanooga, Tennessee. The caption on the reverse of the image reads, "Home of Andrew J. Stoops, 8th and pine sts.
Andrew Stoops home exterior view, circa 1880s
No full textBlack-and-white photograph of Andrew Stoope's home located on 8th and Pine Street located in Chattanooga, Tennessee. The caption on the reverse of the image reads, "Home of Andrew J. Stoops, 8th and pine sts.
Andrew Stoops home exterior view, circa 1880s
No full textBlack-and-white photograph of Andrew Stoops' residence located on 8th and Pine Street located in Chattanooga, Tennessee
A public commission to design the 2010 trophy for the Arts and Business Awards, Scotland.Collaboration with fellow lecturer Andrew Lamb.
No full textThe arts and Business award designed by Andrew Lamb and Jonathan Boyd from the silversmithing and Jewellery dept at Glasgow School of Art is a combination oh hand made and cutting edge technology. Encompassing both their skill and knowledge in the field of design. It also shows their interests in fine detail and pushing the technology available.
The two main elements include laser cut clear Perspex and hand a crafted brass weight. The riveted transparent layers add to the over all appearance effect reflecting light giving a weightless quality to the object
The award is designed to tilt at the weighted ampersand so that the winner can rest the award on arts or business side depending on award received
The Impact of Domestic and Import Prices on U.S. Lamb Imports: A Production System Approach
No full textAs U.S. lamb imports increased relative to domestic production, and the relative share of chilled to frozen lamb imports increased, importers of chilled lamb have become less responsive to domestic and import prices, while the direct opposite is the case for frozen lamb imports. From 1990 to 2003, chilled lamb imports from Australia and New Zealand became less and less responsive to U.S. prices, and frozen imports became more responsive. Unconditional own-price elasticities also show that, over time, imports of chilled lamb became less responsive to import prices while frozen imports became more responsive to import prices.lamb, demand, imports, trade, import demand, production, International Relations/Trade,
U.S. DEMAND FOR IMPORTED LAMB BY COUNTRY: A TWO-STAGE DIFFERENTIAL PRODUCTION APPROACH
No full textDue to a depressed wool industry sheep inventories have been declining resulting in significant increases in lamb and mutton imports. Goals of this paper are to estimate the derived demand and output supply for U.S. lamb imports, estimate demand elasticities, and to determine the impact of TRQ reductions on imports.Demand and Price Analysis,
Leakage Current Mechanisms in SiGe HBTs Fabricated Using Selective and Nonselective Epitaxy
No full textSiGe heterojunction bipolar transistors (HTBs) have been fabricated using selective epitaxy for the Si collector, followed in the same growth step by nonselective epitaxy for the p+ SiGe base and n-Si emitter cap. DC electrical characteristics are compared with cross-section TEM images to identify the mechanisms and origins of leakage currents associated with the epitaxy in two different types of transistor . In the first type, the polysilicon emitter is smaller than the collector active area, so that the extrinsic base implant penetrates into the single-crystal Si and SiGe around the perimeter of the emitter and the polycrystalline Si and SiGe exrtrinsic base. In these transistors, the Bummel plots are near-ideal and there is no evidence of emitter/collector leakage. In the second type, the collector active area is smaller than the polysilicon emitter, so the extrinsic base implant only penetrates into the polysilicon extrinsic base. In these transistors, the leakage currents observed depend on the base doping level. In transistors with a low doped base, emitter/collector and emitter/base leakage is observed, whereas in transistors with a high doped base only emitter/base leakage is observed. The emitter/collector leakage is explained by punch through o fhte base caused by thinning of the SiGe base at the emitter perimeter. The emitter/base leakeage is shown to be due to Poole-Frenkel mechanism and is explained by penetration of the emitter/base depletion region into the p+ polysilicon extrinsic base at the emitter periphery. Variable collector/base reverse leakage currents are observed and a variety of mechanisms are observed, including Shockley-Read-Hall recombination, trap assisted tunneling, Poole Frenkel and band to band tunneling. These result s are explained by the presence of polysilicon grains on the sidewalls of the field oxide at the collector perimeter
Simulation of ultrasonic lamb wave generation, propagation and detection for an air coupled robotic scanner
No full textA computer simulator, to facilitate the design and assessment of a reconfigurable, air-coupled ultrasonic scanner is described and evaluated. The specific scanning system comprises a team of remote sensing agents, in the form of miniature robotic platforms that can reposition non-contact Lamb wave transducers over a plate type of structure, for the purpose of non-destructive evaluation (NDE). The overall objective is to implement reconfigurable array scanning, where transmission and reception are facilitated by different sensing agents which can be organised in a variety of pulse-echo and pitch-catch configurations, with guided waves used to generate data in the form of 2-D and 3-D images. The ability to reconfigure the scanner adaptively requires an understanding of the ultrasonic wave generation, its propagation and interaction with potential defects and boundaries. Transducer behaviour has been simulated using a linear systems approximation, with wave propagation in the structure modelled using the local interaction simulation approach (LISA). Integration of the linear systems and LISA approaches are validated for use in Lamb wave scanning by comparison with both analytic techniques and more computationally intensive commercial finite element/difference codes. Starting with fundamental dispersion data, the paper goes on to describe the simulation of wave propagation and the subsequent interaction with artificial defects and plate boundaries, before presenting a theoretical image obtained from a team of sensing agents based on the current generation of sensors and instrumentation
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