4,341 research outputs found

    The Great Hurricane and Tidal Wave of 1938: Scenes of the Disaster in Rhode Island’s East Bay

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    In September of 1983 a hurricane swept across New England. It was one of the most destructive storms to ever strike the region, causing damage in New York, Rhode Island, Connecticut, Massachusetts, New Hampshire, Vermont, and Maine

    Designing a programming-based approach for modelling scientific phenomena

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    We describe an iteratively designed sequence of activities involving the modelling of 1- dimensional collisions between moving objects based on programming in ToonTalk. Students aged 13-14 in two settings (London and Cyprus) investigated a number of collision situations, classified into six classes based on the relative velocities and masses of the colliding objects. We describe iterations of the system in which students engaged in a repeating cycle of activity for each collision class: prediction of object behaviour from given collision conditions, observation of a relevant video clip, building a model to represent the phenomena, testing, validating and refining their model, and publishing it – together with comments – on our web-based collaboration system, WebReports. Students were encouraged to consider the limitations of their current model, with the aim that they would eventually appreciate the benefit of constructing a general model that would work for all collision classes, rather than a different model for each class. We describe how our intention to engage students with the underlying concepts of conservation, closed systems and system states was instantiated in the activity design, and how the modelling activities afforded an alternative representational framework to traditional algebraic description

    Exploring the mathematics of motion through construction and collaboration

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    In this paper we give a detailed account of the design principles and construction of activities designed for learning about the relationships between position, velocity and acceleration, and corresponding kinematics graphs. Our approach is model-based, that is, it focuses attention on the idea that students constructed their own models – in the form of programs – to formalise and thus extend their existing knowledge. In these activities, students controlled the movement of objects in a programming environment, recording the motion data and plotting corresponding position-time and velocity-time graphs. They shared their findings on a specially-designed web-based collaboration system, and posted cross-site challenges to which others could react. We present learning episodes that provide evidence of students making discoveries about the relationships between different representations of motion. We conjecture that these discoveries arose from their activity in building models of motion and their participation in classroom and online communities

    Application of numerical methods to planetary radiowave scattering

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    Existing numerical techniques for the solution of scattering problems were investigated to determine those which might be applicable to planetary surface studies, with the goal of improving the interpretation of radar data from Venus, Mars, the Moon, and icy satellites. The general characteristics of the models are described along with computational concerns. In particular, the Numerical Electrogmatics Code (NEC) developed at the Lawrence Livermore Laboratory is discussed. Though not developed for random rough surfaces, the NEC contains elements which may be generalized and which could be valuable in the study of scattering by planetary surfaces

    Strategies Used by Employment Service Providers in the Job Development Process: Are they consistent with what employers want?

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    Historically, the role of job developers employed in the state/federal vocational rehabilitation program and the larger network of community-based rehabilitation programs has been to identify and secure paid employment for individuals with disabilities, particularly those with significant disabilities. This technical report describes the results of a study of job development/job placement professionals' strategies in the employment process, and compares these results to employer perceptions of the employment process from recent literature. The report also identifies implications for job development/placement practice based on this comparative analysis

    Leadership for innovation – why manufacturing has a future in Australia

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    In this paper, business leaders discuss the leadership styles they have used to ensure their companies are manufacturing success stories, and then these experiences are analysed to outline the leadership needs for innovation in Australia. Introduction With dire predictions about the future of manufacturing in Australia, we should remember that manufacturing has been an important contributor to national development. There was a thriving manufacturing industry up to 1945, sufficient to supply most domestic needs. Post-war, new industries flourished and a golden era of manufacturing followed. By the late 1950s manufacturing accounted for 29% of Australia’s GDP. By the 1960s, growth and productivity was faltering and manufacturing had begun to stagnate. Today, manufacturing accounts for less than 10% of Australia’s GDP, the lowest level since early colonial times. This is due, in large part, to global economic changes and the economic processes of comparative advantage. However, the innovative spirit that drove previous successes remains and a new generation of leaders and enterprises has emerged. Two of these innovative leaders presented case studies of their firms at a Swinburne Leadership Dialogue in June 2014. Richard Simpson of Furnace Engineering and Robert Wilson of the Wilson Transformer Company discussed the leadership styles and approaches they have used to ensure their companies are – and remain – national manufacturing success stories. Scott Thompson-Whiteside of Swinburne University of Technology then analyses their experiences to outline the leadership needs for innovation in Australia

    Elements of transformational learning in small groups of an Evangelical Christian church

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    The purpose of this grounded theory research study was to discover the transformational learning elements of a small group experience at an Evangelical Christian church that fosters personal transformation. Given the lack of Evangelical Christians experiencing personal transformation within small groups, leaders and teachers could learn much from transformational learning theory that continues to be the predominant framework for research in the area of adult education. The source of data for this study was interviews with small group leaders, teachers, and participants who had experienced a personal transformation while attending a small group. Analysis of the data found that participants faced a variety of circumstances that were personal, meaningful, and transformative, revealing 8 elements, mostly relational, within the small group experience that fostered personal transformation. The concluding theory for this study is that the relational elements of small groups, such as love, care, prayer, and connection create a transformative learning environment where personal transformation is likely to take place through the transparency and development of close relationships with others in the group. Implications of this study include pastors and leaders incorporating relational elements into small groups by taking intentional steps to match individuals, set expectations, set an example, be open and honest, know members, focus on the Bible, be ready to learn, and assess throughout. Creating a life-changing small group experience is an essential mission of Evangelical churches and by incorporating these elements churches can make great strides in fostering spiritual growth and personal transformation in individuals\u27 lives

    Financial Innovation and the Monetary Aggregates

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    macroeconomics, monetary aggregates, financial innovation

    Physical Exercise and its Implications for Aging Immunity and Adoptive Transfer Immunotherapy

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    Advancing age is associated with a profound decline in the normal functioning of the immune system that is commonly referred to as immunosenescence. Impaired responses to vaccination and the increased incidence of infection and malignancy seen in the elderly are often considered to be a direct consequence of immunosenescence. A large body of cross-sectional data has shown that habitual exercise is associated with enhanced functional responses in both the innate and adaptive arms of the aging immune system, indicating that exercise may help curtail the onset of immunosenescence. However, it is not known if exercise is also capable of reversing the detrimental effects of aging on an already weakened immune system. The first part of this presentation will focus on the known effects of habitual exercise at preserving the aging immune system and discuss avenues for future research to test the hypothesis that exercise has immune rejuvenating properties in the elderly. Cancer is widely considered to be an age-related disease, with hematopoietic stem cell transplantation (HSCT) being the preferred treatment for many patients with hematologic malignancies. However, HSCT is associated with significant morbidity and mortality especially due to viral infections (i.e. cytomegalovirus, Epstein-Barr virus and adenovirus) and relapse. The second part of this presentation will focus on the immuno-enhancing effects of acute exercise as a means of increasing the efficacy of adoptive transfer immunotherapy - the passive infusion of ex vivo expanded donor-derived or autologous immune cells to a cancer patient recipient. Our early work in this area indicates that a single bout of exercise can augment the ex-vivo expansion of donor-derived NK-cells and antigen-specific T-cells for use in allogeneic adoptive transfer immunotherapy. This may offer a safe and cost-effective method to improve prognosis and reduce mortality in cancer patients after HSCT
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