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    • Thomas C HullAssociate Professor of Applied Mathematics

    •Explicit kinematic equations for degree-4 rigid origami vertices, Euclidean and non-Euclidean, with R. Foschi and J. Ku, Physical Review E, Vol. 106, No. 5 (2022), 055001–055011.

    •Maximal origami flip graphs of flat-foldable vertices: properties and algorithms, with Manuel Morales, Sarah Nash, and Natalya Ter-Saakov, Journal of Graph Algorithms and Applications, Vol. 26, No. 4 (2022), 503–517.

    • Rigid folding equations of degree-6 origami vertices, with Johnna Farnham and Aubrey Rumbolt, Proceedings of the Royal Society A, Vol. 478, No. 2260 (2022), 20220051 (19 pages).

    • Folding points to a point and lines to a line, with H. Akitaya, B. Ballinger, E. Demaine, and C. Schmidt, in He, Sheehy eds., Proceedings of the 33rd Canadian Conference on Computational Geometry (CCCG 2021), 271–278.

    •Counting locally flat-foldable origami configurations via 3-coloring graphs, with A. Chiu, W. Hoganson, and S. Wu, Graphs and Combinatorics, Vol. 37, No. 1 (2021), 241–261.


    •Face flips in origami tessellations, with H. Akitaya, V. Dujmović, D. Eppstein, K. Jain, and A. Lubiw, Journal of Computational Geometry, Vol. 11, No. 1 (2020), 397–417.

    •Rigid foldability is NP-hard, with H. Akitaya, E. Demaine, T. Horiyama, J. Ku, and T. Tachi, Journal of Computational Geometry, Vol. 11, No. 1 (2020), 93–124.

     

    •Topological kinematics of origami metamaterials,  B. Liu, J. L. Silverberg, A. A. Evans, J., C. D. Santangelo, R. J. Lang, T. C. Hull, and I. Cohen, Nature Physics, Vol. 14, 2018, 811–815.

    •Self-foldability of monohedral quadrilateral origami tessellations, with T. Tachi, Origami7: Proc. of the 7th International Meeting on Origami Science, Mathematics, and Education, Tarquin (2018), 521–532.

    •Rigid foldability of the augmented square twist, with M. Urbanski, Origami7: Proc. of the 7th International Me

    The University of Iowa Libraries

    Finding Aid

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    Papers of Thomas Sample Turner
    RG 99.0133
    Collection Dates: 1935-1982
    14.5 ft.

    Access and Restrictions: This collection is open for research.

    Digital Surrogates: Except where indicated, this document describes but does not reproduce the actual text, images and objects which make up this collection. Materials are available only in the Special Collections Department.

    Copyright: Please read The University of Iowa Libraries' statement on Property Rights, Copyright Law, and Permissions to Use Unpublished Materials.

    Use of Collections: The University of Iowa Libraries supports access to the materials, published and unpublished, in its collections. Nonetheless, access to some items may be restricted by their fragile condition or by contractual agreement with donors, and it may not be possible at all times to provide appropriate machinery for reading, viewing or accessing non-paper-based materials. Please read our Use of Manuscripts Statement.

    Acquisition and Processing Information: Processed by Denise Anderson, December 2000 and January 2005. Guide posted to the Internet December 2000; updated January 2008.

    Photographs: None

     

     

     

     

     

     

     

     

    Scope and Contents

    The papers of Thomas Sample Turner relate to his career as a composer of music at the University of Iowa. His eight compositions span his career from the mid-1930s until his retirement in 1982. The collection fills nineteen boxes with musical scores, conductor's copies, audio reels, cassette tapes, microfilm, a songbook, handbooks, class lecture notes, playbills, B.A. and M.A. diplomas, and art work by Alice Turner.

    Biographical Note

    Thomas Sample Turner was born April 21, 1914 in Corning, Iowa.  His parents were Alice (Sample) Turner, and Daniel W. Turner, Iowa's governor from 1930 until 1932.  Turner attended high school in Corn

    Eur. J. Entomol. 115: 150-156, 2018 | DOI: 10.14411/eje.2018.014

    Efficiency of two methods of sampling used to assess the abundance and species diversity of adult Syrphidae (Diptera) in mountainous meadows in the Austrian and Swiss AlpsOriginal article

    Raja I. HUSSAIN, Ronnie WALCHER, David BRANDL, Arne ARNBERGER, Johann G. ZALLER, Thomas FRANK
    University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research, Institute of Zoology, Vienna, Austria; e-mails: raja.hussain@boku.ac.at, ronnie.walcher@gmx.at, davidbrandl81@gmail.com, johann.zaller@boku.ac.at, thomas.frank@boku.ac.at
    University of Natural Resources and Life Sciences, Institute of Landscape Developments, Recreation and Conservation Planning (ILEN), Vienna, Austria; e-mail: arne.arnberger@boku.ac.at

    The outcome of assessments of the biodiversity of a taxonomic group often depend on the sampling method. The choice of an adequate method is especially important for biomonitoring purposes. In this study, the effectiveness of two methods of sampling syrphids (Diptera: Syrphidae) is compared: observation plot method vs. line transect, both sampled by sweep netting. Altogether, 18 meadows were selected in three mountain regions in the Austrian and Swiss Alps. We recorded a significantly higher abundance and richness of syrphids using the observation plot method than the line transect method in 2015. Comparing data for one region recorded in 2015 and 2016, similar results were obtained. Syrphid species assemblages were affected by sampling method in both years. More syrphid species and individuals were recorded using the observation plot method, which makes it more suitable for studies aiming at comparing differences in the numbers of adult syrphids in different grassland habitats.

    Keywords: Diptera, Syrphidae, hoverflies, sampling methods, observation-plot, line-transect, alpine grassland

    Received: January 13, 2018; R

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