Approved for public release, distribution is unlimited / 235 Class A Navy and Marine (Naval) aviation mishaps involving aircrew error between FY 90 and FY 98 are analyzed for the possibility of being weather related. In addition to determining the overall role of weather, weather related mishaps are compared to aircraft category, mishap characteristic, the Naval Safety Center human factors (HFACS) taxonomy, and flight phase. In addition, weather related mishap trends have been analyzed. Results show 19% of mishaps involving aircrew error are weather related with helicopter category and controlled flight into terrain (CFIT) mishap characteristic having the largest percent of weather related mishaps for their respective groupings. Visibility related weather elements account for over half of all weather related mishaps, and nearly two-thirds of all weather related mishaps were judged to be preventable with a perfect weather forecast believed by aircrew. These and other findings are presented to develop intervention strategies for reducing the number of weather related flight mishaps (FMs) per year. / Lieutenant Commander, United States Navy

Introduction: There are currently no established guidelines to determine which cases general practitioners should refer to an endodontist for root canal treatment. The American Association of Endodontists (AAE) has developed the EndoCase mobile application (ECA), which utilizes either a full or abridged rubric to assign case difficulty level and provide referral guidelines to general practitioners and dental students. Objective: The objective of this study was to determine whether the abridged criteria of the EndoCase application can help predict the incidence of procedural errors in nonsurgical root canal treatment of mandibular molars in an undergraduate dental clinic based on the difficulty level. Methods: A list of patients who received primary root canal treatment on mandibular first molars in the undergraduate dental clinic from 2015-2020 was obtained. Ninety patients qualified for inclusion. Case difficulty level was assessed using the ECA by three providers with differing levels of experience. Incidence of procedural errors was determined from post-operative radiographs by two calibrated independent observers. Results: The most common endodontic mishaps were errors during access cavity preparation followed by the presence of voids in the root filling, with an incidence of 54.4% and 45.6%, respectively. There were no significant differences regarding case difficulty level and the incidence of total procedural errors nor number of treatment visits. Of the individual error types, the presence of obturation >2mm short of the radiographic apex was weakly correlated with case difficulty level (r = 0.226, pConclusion: There is minimal correlation between the difficulty level of mandibular molars determined by the ECA and the number of treatment visits or overall incidence of procedural errors.

This research sought to investigate the impact of a belief in witchcraft as an explanation for all the ills in the Hlubi community and South African societies in general - which becomes a good tool for inadequate governments. Our approach in this study has been interdisciplinary and the utilization of comparative analysis and a combination of phenomenological and qualitative research models. Economic problems create social tensions and are manifested in various ways, including witchcraft craze. The Hlubi scenario found parallels in Europe and America. Witchcraft and ancestors are considered to be the main causes of diseases but nature and ecological or environmental dangers are other factors. Pragmatic and obvious response to such phobias is seen in the protective and preventive devices provided by isangoma, amaqhira, amaxhwere, inyanga and faith healers. It is hypothesized that as long as all existential needs exist in Hlubi society witchcraft will continue to be with us, perhaps forever. / Religious Studies & Arabic / DLITT ET PHIL (REL STUD)

This research sought to investigate the impact of a belief in witchcraft as an explanation for all the ills in the Hlubi community and South African societies in general - which becomes a good tool for inadequate governments. Our approach in this study has been interdisciplinary and the utilization of comparative analysis and a combination of phenomenological and qualitative research models. Economic problems create social tensions and are manifested in various ways, including witchcraft craze. The Hlubi scenario found parallels in Europe and America. Witchcraft and ancestors are considered to be the main causes of diseases but nature and ecological or environmental dangers are other factors. Pragmatic and obvious response to such phobias is seen in the protective and preventive devices provided by isangoma, amaqhira, amaxhwere, inyanga and faith healers. It is hypothesized that as long as all existential needs exist in Hlubi society witchcraft will continue to be with us, perhaps forever. / Religious Studies and Arabic / DLITT ET PHIL (REL STUD)