1,265 research outputs found

    Defining a core journal collection

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    Future Books: Industry, Government, Science, Arts, Vol. IV Transformation

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    volumes illustrations (some color) portraits 30 cm. Editor: Marjorie B. Milne. Produced by Adprint. Cover illustration and design by G.A. Adams. Printed in photogravure by Harrison & Sons Ltd. London. Cover, binding and offset printing by Jerrold & Sons Ltd. Norwich. Advertisements in letterpress by W.S. Cowell Ltd. Ipswich; Alabaster Passmore & Sons Ltd. Maidstone; Thos. Forman & Sons Ltd. Nottingham. The photogravure and offset parts have been printed on Mellotex Paper made by Tullis Russell & Co. Ltd. Markinch Scotland. Information graphics. Casebinding. Library has Volume I. Overture & volume IV. Transformation.https://digitalcommons.risd.edu/specialcollections_books_graphicdesign/1006/thumbnail.jp

    Future Books: Industry, Government, Science, Arts, Vol. I Overture

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    volumes illustrations (some color) portraits 30 cm. Editor: Marjorie B. Milne. Produced by Adprint. Cover illustration and design by G.A. Adams. Printed in photogravure by Harrison & Sons Ltd. London. Cover, binding and offset printing by Jerrold & Sons Ltd. Norwich. Advertisements in letterpress by W.S. Cowell Ltd. Ipswich; Alabaster Passmore & Sons Ltd. Maidstone; Thos. Forman & Sons Ltd. Nottingham. The photogravure and offset parts have been printed on Mellotex Paper made by Tullis Russell & Co. Ltd. Markinch Scotland. Information graphics. Casebinding. Library has Volume I. Overture & volume IV. Transformation.https://digitalcommons.risd.edu/specialcollections_books_graphicdesign/1005/thumbnail.jp

    X-ray scattering from surfaces: discrete and continuous components of roughness

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    Incoherent surface scattering yields a statistical description of the surface, due to the ensemble averaging over many independently sampled volumes. Depending on the state of the surface and direction of the scattering vector relative to the surface normal, the height distribution is discrete, continuous, or a combination of the two. We present a treatment for the influence of multimodal surface height distributions on Crystal Truncation Rod scattering. The effects of a multimodal height distribution are especially evident during in situ monitoring of layer-by-layer thin-film growth via Pulsed Laser Deposition. We model the total height distribution as a convolution of discrete and continuous components, resulting in a broadly applicable parameterization of surface roughness which can be applied to other scattering probes, such as electrons and neutrons. Convolution of such distributions could potentially be applied to interface or chemical scattering. Here we find that this analysis describes accurately our experimental studies of SrTiO3 annealing and homoepitaxial growth.Comment: 15 pages, 7 figure

    Nearly strain-free heteroepitaxial system for fundamental studies of pulsed laser deposition: EuTiO3 on SrTiO3

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    High quality epitaxial thin-films of EuTiO3 have been grown on the (001) surface of SrTiO3 using pulsed laser deposition. In situ x-ray reflectivity measurements reveal that the growth is two-dimensional and enable real-time monitoring of the film thickness and roughness during growth. The film thickness, surface mosaic, surface roughness, and strain were characterized in detail using ex situ x-ray diffraction. The thicnkess and composition were confirmed with Rutherford Backscattering. The EuTiO3 films grow two-dimensionally, epitaxially, pseudomorphically, with no measurable in-plane lattice mismatch.Comment: 7 pages, 6 figure

    Use of Trees by the Texas Ratsnake (Elaphe obsoleta) in Eastern Texas

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    We present information on the use of trees by Elaphe obsoleta (Texas Ratsnake) in a mesic pine-hardwood forest in eastern Texas. Using radiotelemetry, seven snakes (3 females, 4 males) were relocated a total of 363 times from April 2004 to May 2005, resulting in 201 unique locations. Snakes selected trees containing cavities and used hardwoods and snags for a combined 95% of arboreal locations. Texas Ratsnake arboreal activity peaked during July and August, well after the peak of avian breeding activity, suggesting arboreal activity involves factors other than avian predation

    Use of Trees by the Texas Ratsnake (\u3cem\u3eElaphe obsoleta\u3c/em\u3e) in Eastern Texas

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    We present information on the use of trees by Elaphe obsoleta (Texas Ratsnake) in a mesic pine-hardwood forest in eastern Texas. Using radiotelemetry, seven snakes (3 females, 4 males) were relocated a total of 363 times from April 2004 to May 2005, resulting in 201 unique locations. Snakes selected trees containing cavities and used hardwoods and snags for a combined 95% of arboreal locations. Texas Ratsnake arboreal activity peaked during July and August, well after the peak of avian breeding activity, suggesting arboreal activity involves factors other than avian predation

    Spatial Ecology of the Coachwhip, Masticophis flagellum (Squamata: Colubridae), in Eastern Texas

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    We radio-tracked nine Masticophis flagellum (Coachwhips) to determine home range, habitat use, and movements in eastern Texas from April to October 2000. Home ranges of Coachwhips contained more oak savanna macrohabitat than early-successional pine plantation or forested seep, based on the availability of these three macrohabitats in the study area. Likewise, within their individual home ranges, Coachwhips used oak savanna more than the other two macrohabitats, based on availability. An analysis of microhabitat use revealed that, relative to random sites within their home range, Coachwhips were found at sites with fewer pine trees and more herbaceous vegetation taller than 30 cm. Results of the two analyses, macrohabitat and microhabitat, were consistent: oak savannas contained relatively few pine trees but much herbaceous vegetation taller than 30 cm. Coachwhips made frequent long-distance moves, which resulted in large home ranges. Core activity areas, however, were small. These core activity areas were always within the oak savanna macrohabitat. Long movements, large home ranges, and small core activity areas likely were a result of the preferred oak savanna macrohabitat being patchily distributed in the landscape

    Plaid slant and inclination thresholds can be predicted from components

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    We investigated whether stereoscopic slant and inclination thresholds for surfaces defined by two component plaids could be predicted from the interocular differences in their individual component gratings. Thresholds were measured for binocular images defined by single sinusoidal gratings and two component plaids. In both cases thresholds showed a marked dependence on component orientation. For absolute component orientations greater than 45 deg we found that inclination thresholds were smaller than slant thresholds. However, for absolute component orientations less than 45 deg, we found a reversal: slant thresholds were smaller than inclination thresholds. We considered three models that might account for these data. One assumed that thresholds stemmed from interocular position differences of corresponding image points. The other two assumed a combination of position, orientation and/or spatial-frequency differences. The best fits were obtained from those models that explicitly represented orientation differences. From the model combining orientation and spatial-frequency differences, we estimated the relative cue sensitivity to be 1.7:1, respectively. For plaids, we found that thresholds obtained from the individual components could be used to predict thresholds for plaids, even though an additional disparity cue from the contrast beat was available
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