60 research outputs found

    Investigating the Effect of Micro-Quadcopter Flight on UAS Instruction

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    This paper examines student perceptions of micro-quadcopter flights in a higher education setting through a case study format. The purpose of the flight activity discussed is to allow students to familiarize themselves with quadcopter flight characteristics, as early as possible, at their own pace in a low stress environment. Through a series of interviews with students who had taken a course where this activity was performed it was found that students enjoyed the activity and found it engaging. Some students felt that the activity provided them confidence for later courses, and many felt that it helped teach basic quadcopter control. It was also found that if the activity is repeated in later courses it should include some form of directed activity, instead of focusing on “free flight”. Several students brought up another activity in the course, simulator flights, and these are briefly discussed. Future work should look to find if these activities have a positive effect on student flight performance

    Law and International Relations

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    Law and International Relations: Introductory Remarks and Panel Discussion

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    This panel was cosponsored by the American Society of International Law (ASIL). The ASIL was founded in 1906 by Secretary of State Elihu Root to inform and engage the public on issues of international law. It is a nonprofit, nonpartisan membership association and research institute dedicated to providing both information about international law in all its forms and a forum for debate and discussion. This panel was one such forum. It was organized under the auspices of the ASIL Judicial Outreach Program, chaired by Justice Sandra Day O\u27Connor. The Judicial Outreach Program provides information resources for federal and state judiciaries. The panel attempted to tour the horizon of international law and United States practice. The panelists, who have a broad range of backgrounds and perspectives, discussed a variety of issues, including how one defines the substance of international law, how international law interacts with our Constitution and with domestic legal practice, and how the work of lawyers and judges is evolving due to globalization

    Law and International Relations: Introductory Remarks and Panel Discussion

    Get PDF
    This panel was cosponsored by the American Society of International Law (ASIL). The ASIL was founded in 1906 by Secretary of State Elihu Root to inform and engage the public on issues of international law. It is a nonprofit, nonpartisan membership association and research institute dedicated to providing both information about international law in all its forms and a forum for debate and discussion. This panel was one such forum. It was organized under the auspices of the ASIL Judicial Outreach Program, chaired by Justice Sandra Day O\u27Connor. The Judicial Outreach Program provides information resources for federal and state judiciaries. The panel attempted to tour the horizon of international law and United States practice. The panelists, who have a broad range of backgrounds and perspectives, discussed a variety of issues, including how one defines the substance of international law, how international law interacts with our Constitution and with domestic legal practice, and how the work of lawyers and judges is evolving due to globalization

    Germline HOXB13 mutations p.G84E and p.R217C do not confer an increased breast cancer risk

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    In breast cancer, high levels of homeobox protein Hox-B13 (HOXB13) have been associated with disease progression of ER-positive breast cancer patients and resistance to tamoxifen treatment. Since HOXB13 p.G84E is a prostate cancer risk allele, we evaluated the association between HOXB13 germline mutations and breast cancer risk in a previous study consisting of 3,270 familial non-BRCA1/2 breast cancer cases and 2,327 controls from the Netherlands. Although both recurrent HOXB13 mutations p.G84E and p.R217C were not associated with breast cancer risk, the risk estimation for p.R217C was not very precise. To provide more conclusive evidence regarding the role of HOXB13 in breast cancer susceptibility, we here evaluated the association between HOXB13 mutations and increased breast cancer risk within 81 studies of the international Breast Cancer Association Consortium containing 68,521 invasive breast cancer patients and 54,865 controls. Both HOXB13 p.G84E and p.R217C did not associate with the development of breast cancer in European women, neither in the overall analysis (OR = 1.035, 95% CI = 0.859-1.246, P = 0.718 and OR = 0.798, 95% CI = 0.482-1.322, P = 0.381 respectively), nor in specific high-risk subgroups or breast cancer subtypes. Thus, although involved in breast cancer progression, HOXB13 is not a material breast cancer susceptibility gene.Peer reviewe

    Variation in Structure and Process of Care in Traumatic Brain Injury: Provider Profiles of European Neurotrauma Centers Participating in the CENTER-TBI Study.

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    INTRODUCTION: The strength of evidence underpinning care and treatment recommendations in traumatic brain injury (TBI) is low. Comparative effectiveness research (CER) has been proposed as a framework to provide evidence for optimal care for TBI patients. The first step in CER is to map the existing variation. The aim of current study is to quantify variation in general structural and process characteristics among centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. METHODS: We designed a set of 11 provider profiling questionnaires with 321 questions about various aspects of TBI care, chosen based on literature and expert opinion. After pilot testing, questionnaires were disseminated to 71 centers from 20 countries participating in the CENTER-TBI study. Reliability of questionnaires was estimated by calculating a concordance rate among 5% duplicate questions. RESULTS: All 71 centers completed the questionnaires. Median concordance rate among duplicate questions was 0.85. The majority of centers were academic hospitals (n = 65, 92%), designated as a level I trauma center (n = 48, 68%) and situated in an urban location (n = 70, 99%). The availability of facilities for neuro-trauma care varied across centers; e.g. 40 (57%) had a dedicated neuro-intensive care unit (ICU), 36 (51%) had an in-hospital rehabilitation unit and the organization of the ICU was closed in 64% (n = 45) of the centers. In addition, we found wide variation in processes of care, such as the ICU admission policy and intracranial pressure monitoring policy among centers. CONCLUSION: Even among high-volume, specialized neurotrauma centers there is substantial variation in structures and processes of TBI care. This variation provides an opportunity to study effectiveness of specific aspects of TBI care and to identify best practices with CER approaches

    Variation in general supportive and preventive intensive care management of traumatic brain injury: a survey in 66 neurotrauma centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study

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    Abstract Background General supportive and preventive measures in the intensive care management of traumatic brain injury (TBI) aim to prevent or limit secondary brain injury and optimize recovery. The aim of this survey was to assess and quantify variation in perceptions on intensive care unit (ICU) management of patients with TBI in European neurotrauma centers. Methods We performed a survey as part of the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. We analyzed 23 questions focused on: 1) circulatory and respiratory management; 2) fever control; 3) use of corticosteroids; 4) nutrition and glucose management; and 5) seizure prophylaxis and treatment. Results The survey was completed predominantly by intensivists (n = 33, 50%) and neurosurgeons (n = 23, 35%) from 66 centers (97% response rate). The most common cerebral perfusion pressure (CPP) target was > 60 mmHg (n = 39, 60%) and/or an individualized target (n = 25, 38%). To support CPP, crystalloid fluid loading (n = 60, 91%) was generally preferred over albumin (n = 15, 23%), and vasopressors (n = 63, 96%) over inotropes (n = 29, 44%). The most commonly reported target of partial pressure of carbon dioxide in arterial blood (PaCO2) was 36–40 mmHg (4.8–5.3 kPa) in case of controlled intracranial pressure (ICP) < 20 mmHg (n = 45, 69%) and PaCO2 target of 30–35 mmHg (4–4.7 kPa) in case of raised ICP (n = 40, 62%). Almost all respondents indicated to generally treat fever (n = 65, 98%) with paracetamol (n = 61, 92%) and/or external cooling (n = 49, 74%). Conventional glucose management (n = 43, 66%) was preferred over tight glycemic control (n = 18, 28%). More than half of the respondents indicated to aim for full caloric replacement within 7 days (n = 43, 66%) using enteral nutrition (n = 60, 92%). Indications for and duration of seizure prophylaxis varied, and levetiracetam was mostly reported as the agent of choice for both seizure prophylaxis (n = 32, 49%) and treatment (n = 40, 61%). Conclusions Practice preferences vary substantially regarding general supportive and preventive measures in TBI patients at ICUs of European neurotrauma centers. These results provide an opportunity for future comparative effectiveness research, since a more evidence-based uniformity in good practices in general ICU management could have a major impact on TBI outcome
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