1,933 research outputs found

    Learning Strategies and Academic Difficulty in Physical and Occupational Therapy Online Education

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    The purpose of this study was to explore the Learning and Study Strategies Inventory (LASSI) in relation to hybrid-online clinical neuroscience course outcomes in occupational therapy (OT) and physical therapy (PT) students. OT and PT students self-administered the LASSI during the Spring of 2019. N=34 students (14 OT; 20 PT) completed the LASSI. The scales of Information Processing (r = -0.43;

    A study of the stress wave factor technique for nondestructive evaluation of composite materials

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    The acousto-ultrasonic method of nondestructive evaluation is an extremely sensitive means of assessing material response. Efforts continue to complete the understanding of this method. In order to achieve the full sensitivity of the technique, extreme care must be taken in its performance. This report provides an update of the efforts to advance the understanding of this method and to increase its application to the nondestructive evaluation of composite materials. Included are descriptions of a novel optical system that is capable of measuring in-plane and out-of-plane displacements, an IBM PC-based data acquisition system, an extensive data analysis software package, the azimuthal variation of acousto-ultrasonic behavior in graphite/epoxy laminates, and preliminary examination of processing variation in graphite-aluminum tubes

    A study of the stress wave factor technique for evaluation of composite materials

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    The acousto-ultrasonic approach for nondestructive evaluation provides a measurement procedure for quantifying the integrated effect of globally distributed damage characteristic of fiber reinforced composite materials. The evaluation procedure provides a stress wave factor that correlates closely with several material performance parameters. The procedure was investigated for a variety of materials including advanced composites, hybrid structure bonds, adhesive bonds, wood products, and wire rope. The research program focused primarily on development of fundamental understanding and applications advancements of acousto-ultrasonics for materials characterization. This involves characterization of materials for which detection, location, and identification of imperfections cannot at present be analyzed satisfactorily with mechanical performance prediction models. In addition to presenting definitive studies on application potentials, the understanding of the acousto-ultrasonic method as applied to advanced composites is reviewed

    Vascular Neurology Nurse Practitioner Provision of Telemedicine Consultations

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    Objective. The objective was to define and evaluate a role for the Vascular Neurology-Nurse Practitioner (VN-NP) in the delivery of telemedicine consultations in partnership with a vascular neurologist. Methods. Prospective stroke alert patients at participating hospitals underwent a two-way audio video telemedicine consultation with a VN-NP at a remotely located stroke center in partnership with a vascular neurologist. Demographic information, National Institutes of Health Stroke Scale (NIHSS) scores, diagnoses, CT contraindications to thrombolysis, thrombolysis eligibility, and time interval data were collected. The inter-rater agreement between VN-NP and vascular neurologist assessments was calculated. Results. Ten patients were evaluated. Four were determined to have ischemic stroke, one had a transient ischemic attack, two had intracerebral hemorrhages, and three were stroke mimics. Overall, three patients received thrombolysis. The inter-rater agreement between VN-NP and vascular neurologist assessments were excellent, ranging from 0.9 to 1.0. The duration of VN-NP consultation was 53.2 ± 9.0 minutes, which included the vascular neurologist supervisory evaluation time of 12.0 ± 9.6 minutes. Conclusion. This study illustrated that a stroke center VN-NP, in partnership with a vascular neurologist, could deliver timely telemedicine consultations, accurate diagnoses, and correct treatments in acute stroke patients who presented to remotely located rural emergency departments within a hub and spoke network. VN-NPs may fulfill the role of a telestroke provider

    UAS Maintenance: A Critical Component in Maintaining Airworthiness

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    Over the last several decades, the notion of traditional aircraft design has significantly changed. While there are many modern aircraft that resemble earlier models, their components, systems, and overall architecture have evolved, including the introduction of small unmanned aircraft systems (sUAS). Despite the growing consumer attraction to own and operate these aircraft, the subsequent impact on safety is an area of intense concern. The requirement of an established maintenance program for manned aircraft is rooted in ensuring that all aircraft are deemed safe for flight. Preventive maintenance schedules are based on component reliability data, which minimizes unnecessary maintenance while preventing maintenance-related aircraft accidents. This same requirement has not been extended to small unmanned aircraft systems. Current regulations and requirements for sUAS maintenance refer only to maintaining airworthiness, with no specific scheduled or unscheduled maintenance practices required. As the demand for small unmanned aircraft systems continues to grow, the safety threat will rise. The requirement of formal maintenance practices, which are based on component reliability data, would fulfill this need. To further explore the possibility of an established maintenance program for sUAS operators, this paper reviews current maintenance requirements and proposes new accident data collection measures which contribute to the creation of a scheduled maintenance program. A formal certification process which follows a modified MSG-3 process is also proposed

    HAVE WE REACHED PEAK DESIGN THINKING? Are we entering a new paradigm for how it is used within practice and business?

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    Design Thinking has gained recognition as an acclaimed process for generating innovative, human centred solutions at a social and business level. It has also gained notoriety amongst many designers, who claim that its success as an exported element of the design process has resulted in its commodification, and led to it becoming a diluted series of processes that lack criticality. As design disciplines and the role of designers continue to evolve, we should reflect on design thinking’s original context and understand its progression into a non-design world. Our hypothesis is that design thinking has reached a ‘peak’ in contemporary practice, and as the term 'design' is further adapted and conformed to suit a business function, this conversational will elicit a constructive debate on the future of design thinking and its positioning within design and non-design industries. Has Design Thinking’s commodification and consumption as a step by step road map to innovation reduced it to a mainstream approach? Can we use the undoubted successes of design thinking as a catalyst for future design research? It is anticipated that through analysis and discussion, this conversation will inform the conceptualisation of enhanced methodological frameworks that aim to support innovation across divergent industry practices

    Small Unmanned Aircraft System Operator Compliance with Visual Line of Sight Requirements

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    Operating small unmanned aircraft systems (sUAS) beyond visual line of sight (BVLOS) without appropriate waivers and risk mitigations presents a serious hazard to manned aircraft and other users of the National Airspace System. According to federal regulations codified in 14 CFR 107 and PL 112-95 Sec. 336, sUAS operators are required to fly their craft within visual line of sight. Currently, no data exists to determine if operators are compliant with these rules. The authors sought to conduct an exploratory research study to determine the distance operators fly their sUAS craft and evaluate the likelihood of remaining in visual contact using modeling techniques. Using the DJI AeroScope detection device, the authors sampled 30 days of sUAS flight data from a location in the southern U.S. Collected data included operator location, unmanned aircraft model, flight telemetry, and other ancillary information. The authors amassed data for 1,013 sUAS flights, however, only 110 flights included the necessary information to determine distance information between the operator and aerial vehicle. Using Greening’s (1976) visual modeling technique, the authors calculated maximum visibility distances for the sUAS models based on size and human visibility limitations, and compared them against detected distance findings. The authors determined that 5.5% of the detected flights were flown at distances exceeding human visual limits. The authors plan to conduct future field studies to compare the calculated visibility models contained in this paper in field test conditions

    Unusual case of recurrent renal artery stenosis: lessons to learn

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    Evaluating Small UAS Operations and National Airspace System Interference Using AeroScope

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    A recent rash of near mid-air collisions coupled with the widespread proliferation of small unmanned aircraft systems (sUAS) raise concerns that integration is posing additional risk to the National Airspace System. In 2016, sUAS sighting reports by manned aircraft pilots averaged 147 per month. In the first three quarters of 2017, sUAS sightings jumped to 188 per month. The purpose of this study was to evaluate sUAS operator behavior to determine potential interference with aviation operations. While previous research has indeed yielded findings about operator behavior, such studies were generally based on data derived from Aviation Safety Reporting System filings or the UAS sighting report database maintained by the Federal Aviation Administration. In this study, the authors partnered with a UAS technology company to deploy an AeroScope, a passive radiofrequency detection device, to detect UAS flight activity in an urban area. While the device was limited to collecting flight information from only DJImanufactured platforms, it is estimated that the company holds a market share in excess of 70% providing a reasonable barometer for sUAS activity in the sample area. Over the 19-day sample period, the AeroScope device recorded 258 detections of 77 unique sUAS platforms. The authors assessed sUAS operator behavioral characteristics, including: UAS models, operating altitudes, preferred flying days and times, flight durations, and operating locations. The authors assessed 93 potential violations of 14 CFR 107 regulations, including controlled airspace breaches, exceeding maximum flight altitudes, and flight outside of daylight or civil twilight hours. The authors concluded that UAS activity in the sample area posed potential conflicts with a runway visual approach, created a collision hazard with three heliports, and heightened risk for visual flight rules operations underneath a controlled airspace shelf. The authors determined existing sUAS geofencing systems were ineffective at deterring sUAS activity unless they imposed flight restrictions in addition to hazard notification

    UAS Maintenance: A Critical Component in Maintaining Airworthiness

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    Over the last several decades, the notion of traditional aircraft design has significantly changed. While there are many modern aircraft that resemble earlier models, their components, systems, and overall architecture have evolved, including the introduction of small unmanned aircraft systems. Despite the growing consumer attraction to own and operate these aircraft, the subsequent impact on safety is an area of intense concern. The requirement of an established maintenance program for manned aircraft is rooted in ensuring that all aircraft are deemed safe for flight. Preventive maintenance schedules are based on component reliability data, which minimizes unnecessary maintenance while preventing maintenance-related aircraft accidents. This same requirement has not been extended to small unmanned aircraft systems. Current regulations and requirements for sUAS maintenance refer only to maintaining airworthiness, with no specific scheduled or unscheduled maintenance practices required. As the demand for small unmanned aircraft systems continues to grow, the safety threat will rise. The requirement of formal maintenance practices, which are based on component reliability data, would fulfill this need. To further explore the possibility of an established maintenance program for sUAS operators, this paper reviewed current maintenance requirements and proposes new accident data collection measures which contribute to the creation of a scheduled maintenance program. A formal certification process which follows a modified MSG-3 process is also proposed
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