An Access Control Model for Protecting Provenance Graphs

Postprin

Inspiring Change Agents through Technology

A capstone submitted in partial fulfillment of the Requirements for the degree of Doctor of Education in the College of Education at Morehead State University by Edith J. Bostic and Timothy R. Edwards Gallipolis on April 1, 2016

Cenozoic evolution of the eastern Black Sea: a test of depth-dependent stretching models

Subsidence analysis of the eastern Black Sea basin suggests that the stratigraphy of this deep, extensional basin can be explained by a predominantly pure-shear stretching history. A strain-rate inversion method that assumes pure-shear extension obtains good fits between observed and predicted stratigraphy. A relatively pure-shear strain distribution is also obtained when a strain-rate inversion algorithm is applied that allows extension to vary with depth without assuming its existence or form. The timing of opening of the eastern Black Sea, which occupied a back-arc position during the closure of the Tethys Ocean, has also been a subject of intense debate; competing theories called for basin opening during the Jurassic, Cretaceous or Paleocene/Eocene. Our work suggests that extension likely continued into the early Cenozoic, in agreement with stratigraphic relationships onshore and with estimates for the timing of arc magmatism. Further basin deepening also appears to have occurred in the last 20 myr. This anomalous subsidence event is focused in the northern part of the basin and reaches its peak at 15–10 Ma. We suggest that this comparatively localized shortening is associated with the northward movement of the Arabian plate. We also explore the effects of paleowater depth and elastic thickness on the results. These parameters are controversial, particularly for deep-water basins and margins, but their estimation is a necessary step in any analysis of the tectonic subsidence record stored in stratigraphy. <br/

Freight logistics services for rural economies : User needs and future challenges

Peer reviewedPublisher PD

An analysis of the stability of craniofacial fracture fixation using a mandibular model

This thesis aims to investigate the differences in mechanical properties of major miniplating systems used for non compression miniplate osteosynthesis of mandibular fractures, and to determine whether these properties influence treatment outcome. The study was conducted in three parts. Six of the major miniplate systems currently used at the Royal Adelaide Hospital were subjected to bending tests at the University of Adelaide Engineering Department to quantify the relative stiffness of each plate. A wide variation in the mechanical properties of the individual plating systems was identified. In addition the properties of the materials, their biocompatibilty and CT compatibility are discussed. In the second part of the study, patients with recent mandibular fractures were treated using internal fixation with miniplates that were the least stiff as identified earlier. These patients then had a load applied across the fracture, and cephalometric radiographs were taken to detect any deformation of the fracture. No deformation was detected a tolerable loads, suggesting that the pain response protected these patients from a bite force which would deform the malleable miniplates. In the third part of the study, a prospective sample of patients presenting with mandibular fractures was analysed. These patients were treated with a variety of the miniplating systems. The results of treatment as a whole rü/ere compared to identiff any direct benefit consequent on the miniplate selected. Whilst significant differences in stiffness existed between the plating systems and the cost of the miniplates, no significant differences in treatment outcome were identified,red between the noncompression miniplates employed. As no observable benefits have been identified by choice of miniplate, selection should be based on surgical preference, biocompatibility, CT compatibility, and unit cost. Due to the variations in materials, design, properties, CT compatibility and unit costs, it is important not to regard all miniplates as equal and interchangeable.Thesis (M.S.)--University of Adelaide, Dept. of Plastic and Reconstructive Surgery at the R.A.H. and The Australian Craniofacial Unit, 199