415 research outputs found

    Interpreting public relations to management

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    Thesis (M.S.)--Boston University, 1950

    Structural and Stratigraphic Studies of the Northern Ellesmere Ice Shelf

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    Report complementary to Hattersley-Smith and others' (AB. No 40304). Ice cores obtained near Ward Hunt Island (83 05 N, 75 W) and on trips along the coast showed four ice types composing the shelf: iced firn, glacier, lake, and sea ice. The thick primary portion of the shelf seems to be composed stratigraphically of three major ice units. The uppermost consisting of granular iced firn untouched by sea water, with associated lenses of lake ice, is separated by a dirt layer from the middle unit, similarly composed but soaked by migrating sea water. Evidence indicates the lowest unit to be glacier ice (or sea ice interfingered with glacier or lake ice) upon which the iced firn accumulates. The process is briefly described

    09/09/1947 Letter from The Salvation Army

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    Letter from Ernest A. Marshall, Divisional Director of The Salvation Army, to Louis-Philippe GagnƩ.https://digitalcommons.usm.maine.edu/fac-lpg-1947-07-09/1032/thumbnail.jp

    Clapham Sect

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    The development of a composite sustainable development indicator for a corporate retail enterprise

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    Includes bibliographical references (leaves 134-145).This dissertation proposes a conceptual and methodological framework for the creation and implementation of a Composite Sustainable Development Indicator for a retail corporate entity. It provides a review and evaluation of existing approaches to sustainability development, and in particular Corporate Sustainability. The study selects and combines aspects of existing conceptual frameworks into a new conceptual framework for a Composite Sustainable Development Indicator for the retail context. It then applies this framework and general principles and criteria of sustainability assessment, in the selection and adaptation of an existing CSDI framework, namely the Barometer of Sustainability. An illustrative example of the application of the proposed methodological framework is also provided. The study was initiated based on the need for more research into the complexity of Composite Sustainability Indicators. The study also attempts to address the lack of effective methodologies for assessing, measuring and managing sustainability within a corporate environment. It thus proposes a more rigorous approach to sustainability that may enhance the current culture of reporting

    Adjuvant bevacizumab in patients with melanoma at high risk of recurrence (AVAST-M): preplanned interim results from a multicentre, open-label, randomised controlled phase 3 study

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    Background Bevacizumab, a monoclonal antibody that targets VEGF, has shown restricted activity in patients with advanced melanoma. We aimed to assess the role of bevacizumab as adjuvant treatment for patients with resected melanoma at high risk of recurrence. We report results from the preplanned interim analysis. Methods We did a multicentre, open-label, randomised controlled phase 3 trial at 48 centres in the UK between July 18, 2007, and March 29, 2012. Patients aged 16 years or older with American Joint Committee on Cancer stage (AJCC) stage IIB, IIC, and III cutaneous melanoma were randomly allocated (1:1), via a central, computer-based minimisation procedure, to receive intravenous bevacizumab 7Ā·5 mg/kg, every 3 weeks for 1 year, or to observation. Randomisation was stratifi ed by Breslow thickness of the primary tumour, N stage according to AJCC staging criteria, ulceration of the primary tumour, and patient sex. The primary endpoint was overall survival; secondary endpoints included disease-free interval, distant-metastases interval and quality of life. Analysis was by intention-to-treat. This trial is registered as an International Standardised Randomised Controlled Trial, number ISRCTN81261306. Findings 1343 patients were randomised to either the bevacizumab group (n=671) or the observation group (n=672). Median follow-up was 25 months (IQR 16Ʊ37) in the bevacizumab group and 25 months (17Ʊ37) in the observation group. At the time of interim analysis, 286 (21%) of 1343 enrolled patients had died: 140 (21%) of 671 patients in the bevacizumab group, and 146 (22%) of 672 patients in the observation group. 134 (96%) of patients in the bevacizumab group died because of melanoma versus 139 (95%) in the observation group. We noted no signifi cant diā”Ž erence in overall survival between treatment groups (hazard ratio [HR] 0Ā·97, 95% CI 0Ā·78Ʊ1Ā·22; p=0Ā·76); this fi nding persisted after adjustment for stratifi cation variables (HR 1Ā·03; 95% CI 0Ā·81Ʊ1Ā·29; p=0Ā·83). Median duration of treatment with bevacizumab was 51 weeks (IQR 21Ʊ52) and dose intensity was 86% (41Ʊ96), showing good tolerability. 180 grade 3 or 4 adverse events were recorded in 101 (15%) of 671 patients in the bevacizumab group, and 36 (5%) of 672 patients in the observation group. Bevacizumab resulted in a higher incidence of grade 3 hypertension than did observation (41 [6%] vs one [<1%]). There was an improvement in disease-free interval for patients in the bevacizumab group compared with those in the observation group (HR 0Ā·83, 95% CI 0Ā·70Ʊ0Ā·98, p=0Ā·03), but no signifi cant diā”Ž erence between groups for distant-metastasis-free interval (HR 0Ā·88, 95% CI 0Ā·73Ʊ1Ā·06, p=0Ā·18). No signifi cant diā”Ž erences were noted between treatment groups in the standardised area under the curve for any of the quality-of-life scales over 36 months. Three adverse drug reactions were regarded as both serious and unexpected: one patient had optic neuritis after the fi rst bevacizumab infusion, a second patient had persistent erectile dysfunction, and a third patient died of a haemopericardium after receiving two bevacizumab infusions and was later identifi ed to have had signifi cant predisposing cardiovascular risk factors. Interpretation Bevacizumab has promising tolerability. Longer follow-up is needed to identify an eā”Žect on the primary endpoint of overall survival at 5 years. Funding Cancer Research U

    Extensive necrosis of visceral melanoma metastases after immunotherapy

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    <p>Abstract</p> <p>Background</p> <p>The prognosis for metastatic melanoma remains poor even with traditional decarbazine or interferon therapy. 5-year survival is markedly higher amongst patients undergoing metastatectomy. Unfortunately not all are suitable for metastatectomy. Alternative agents for systemic therapy have, to date, offered no greater rates of survival beyond traditional therapy. A toll-like receptor 9 agonist, PF-3512676 (formerly known as CPG 7909) is currently being evaluated for its potential.</p> <p>Case presentation</p> <p>We present the case of a 54-year-old Caucasian male with completely resected metastatic cutaneous melanoma after immunotherapy. The patient initially progressed during adjuvant high-dose interferon, with metastases to the liver, spleen, and pelvic lymph nodes. During an 18-month treatment period with PF-3512676 (formerly known as CPG 7909), a synthetic cytosine-phosphorothioate-guanine rich oligodeoxynucleotide, slow radiologic disease progression was demonstrated at the original disease sites. Subsequent excision of splenic and pelvic nodal metastases was performed, followed by resection of the liver metastases. Histologic examination of both hepatic and splenic melanoma metastases showed extensive necrosis. Subsequent disease-free status was demonstrated by serial positron emission tomography (PET).</p> <p>Conclusion</p> <p>Existing evidence from phase I/II trials suggests systemic treatment with PF-3512676 is capable of provoking a strong tumor-specific immune response and may account for the prolonged tumor control in this instance.</p

    Science-Technology-Society (STS): a new paradigm in Science Education

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    publication-status: Publishedtypes: ArticleChanges in the past two decades of goals for science education in schools have induced new orientations in science education worldwide. One of the emerging complementary approaches was the science-technology-society (STS) movement. STS has been called the current megatrend in science education. Others have called it a paradigm shift for the field of science education. The success of science education reform depends on teachers' ability to integrate the philosophy and practices of current programs of science education reform with their existing philosophy. Thus, when considering the STS approach to science education, teacher beliefs about STS implementation require attention. Without this attention, negative beliefs concerning STS implementation and inquiry learning could defeat the reform movements emphasizing STS. This article argues the role of STS in science education and the importance of considering science teachers' beliefs about STS in implementing significant reforms in science education

    Ethical considerations in conducting surgical research in severe complicated intra-abdominal sepsis

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    Abstract Background Severe complicated intra-abdominal sepsis (SCIAS) has high mortality, thought due in part to progressive bio-mediator generation, systemic inflammation, and multiple organ failure. Treatment includes early antibiotics and operative source control. At surgery, open abdomen management with negative-peritoneal-pressure therapy (NPPT) has been hypothesized to mitigate MOF and death, although clinical equipoise for this operative approach exists. The Closed or Open after Laparotomy (COOL) study ( https://clinicaltrials.gov/ct2/show/NCT03163095 ) will prospectively randomize eligible patients intra-operatively to formal abdominal closure or OA with NPTT. We review the ethical basis for conducting research in SCIAS. Main body Research in critically ill incapacitated patients is important to advance care. Conducting research among SCIAS is complicated due to the severity of illness including delirium, need for emergent interventions, diagnostic criteria confirmed only at laparotomy, and obtundation from anaesthesia. In other circumstances involving critically ill patients, clinical experts have worked closely with ethicists to apply principles that balance the rights of patients whilst simultaneously permitting inclusion in research. In Canada, the Tri-Council Policy Statement-2 (TCPS-2) describes six criteria that permit study enrollment and randomization in such situations: (a) serious threat to the prospective participant requires immediate intervention; (b) either no standard efficacious care exists or the research offers realistic possibility of direct benefit; (c) risks are not greater than that involved in standard care or are clearly justified by prospect for direct benefits; (d) prospective participant is unconscious or lacks capacity to understand the complexities of the research; (e) third-party authorization cannot be secured in sufficient time; and (f) no relevant prior directives are known to exist that preclude participation. TCPS-2 criteria are in principle not dissimilar to other (inter)national criteria. The COOL study will use waiver of consent to initiate enrollment and randomization, followed by surrogate or proxy consent, and finally delayed informed consent in subjects that survive and regain capacity. Conclusions A delayed consent mechanism is a practical and ethical solution to challenges in research in SCIAS. The ultimate goal of consent is to balance respect for patient participants and to permit participation in new trials with a reasonable opportunity for improved outcome and minimal risk of harm
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