12,741 research outputs found

    The Eufaula Mound: Contributions to the Spiro Focus

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    The main aim of the paper is the comparison of two archaeological sites, (1) the Eufaula site of McIntosh County, and (2) the Spiro site of Leflore County, Okla. Purpose of the comparison is to indicate the relationship between the 2 sites, thereby establishing a Spiro Focus, the ramifications and general affiliations of which will be suggested. The thesis is based on original research coming out of my experience as Project Superintendent of various units of the Oklahoma WP A Project. The Project, sponsored by the university of Oklahoma and directed by Dr. F.E. Clements, has carried on large scale excavations in Oklahoma since 1936. At that time the Spiro l\found group, in the east central part of the state, was opened up. In the two years from 1936 to 1938 a crew of 70 WP A laborers, under the direction of trained archaeologists, unearthed quantities of archeological material. The main bulk of material from the Great Temple Mound was excavated under the direction of Mr. Joe Finkelstein. 1 It was my privilege to analyze the material excavated by him. I also excavated the Spiro Village and a series of villages in the vicinity of the Mound group. 2 Both groups of data will be utilized

    Field Report on the Excavation of Indian Villages in the Vicinity of the Spiro Mounds, Leflore County, Oklahoma

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    A wealth of strikingly unusual and beautiful objects of Indian manufacture were excavated from the burials of the Spiro Mound, Leflore (sic.) County, Oklahoma during 1936-37. Engraved Gulf Coast conch shells, shell beads of a dozen types, river pearls, effigy pipes, long delicately chipped flint blades, feather and textile cloths and precisely incised pottery vessels were excavated in quantities. So unusual was this material that, at the time, the archaeological science was unable to answer a host of questions which immediately arose concerning the identity of the tribe who had made the artifacts and who were buried with them. How long ago had they occupied the region? From where had they come, and where did they go? The chronological relationship of the Spiro Mound Culture to the known cultures of the United States was of particular concern to the investigators. How and where did this tribe fit into the picture of America\u27s past

    ‘We kind of try to merge our own experience with the objectivity of the criteria’: The role of connoisseurship and tacit practice in undergraduate fine art assessment

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    This article explores connoisseurship in the context of fine art undergraduate assessment practice. I interviewed twelve fine art lecturers in order to explore and unpack the concept of connoisseurship in relation to subjectivity, objectivity and tacit practice. Building on the work of Bourdieu (1973, 1977, 1986) and Shay (2003, 2005), both of whom problematize the view that subjectivity and objectivity are binary opposites, my research illustrates the ways that connoisseurship is underpinned by informed professional judgements located in communities of practice. Within this particular conception of connoisseurship, the lecturers’ expertise is co-constituted in communities of assessors through participation and engagement. Standards reside in communities of practice

    A theoretical investigation of 2-2 composite transducers with high shear attenuation in the passive phase

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    This paper is about a theoretical investigation of 2-2 composite transducers with high shear attenuation in the passive phase. It was presented at the Étude de la propagation ultrasonore en milieux non homogènes en vue du contrôle non-destructif in 2007

    Incorporation of viscoelastic loss into the plane wave expansion approach to modelling composite transducers

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    The plane wave expansion (PWE) method has been proposed as a theoretical model for periodic composite ultrasonic transducers. This paper extends previous work by importantly including viscoelastic loss in the material parameters. Some of the issues with model formulation, such as ill-conditioning in the large matrices, have been addressed through parameter scaling and Tikhonov regularisation. Identification of each mode of vibration has been carried out by visualising the spatial and temporal profiles of the displacement, electrical potential and Poynting vector. A comparison between the theoretical predictions and experimental data from a piezoelectric composite device is presented. The effect that the elastic properties of the passive phase have on device performance is also investigated. It is found that high shear attenuation in the passive phase gives rise to a large frequency stop band gap around the fundamental thickness mode
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