361 research outputs found

    A blended learning framework for curriculum design and professional development

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    The need for flexibility in learning and the affordances of technology provided the impetus for the rise of blended learning (BL) globally across higher education institutions. However, the adoption of BL practices continues at a low pace due to academics’ low digital fluency, various views and BL definitions, and limited standards-based tools to guide academic practice. To address these issues, this paper introduces a BL framework, based on one definition and with criteria and standards of practice to support the evaluation and advancement of BL in higher education. The framework is theoretically underpinned by the extant literature and supported by focus group discussions. The evidence supporting the criteria and standards are discussed with suggestions for how they can be used to guide course design, academic practice, and professional development

    Portfolio Vol. III N 2

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    Timrud, David. Brain Fever. Prose. 3-5. X, Mister. Shadows. Poetry. 6. Fox, Thomas. Purgatory of The Gods. Prose. 7-8. Deeds, Ed. The Messiah. Prose. 9-10. Maxwell, Robert. Haunted. Poetry. 10. Maxwell, Bob. Fortune Teller. Prose. 11-12. Russell, Mark. Illustration. Picture. 6. Thomas, Roland. \u27Tween Classes. Picture. 2. Bailey, Bernard. Boy and Instructor. Prose. 15. Gratza, Margaret. Three Poets. Poetry. 16. Phillips, Alison. Nasturtiums. Poetry. 16. B.J.W. Restlessness. Poetry. 16. Russell, Mark. Still Life. Picture. 16. Martindale, Virginia. The Boat In The Bayou. Prose. 17-18. Deane, Dorothy. Review of New Books. 19. Deane, Dorothy. Review of New Recordings. 19. Koos, Betty. Still Life. Picture. 20. Bonnett, Elizabeth. Portrait of Betty Jeager. Picture. 20. Franke, Ruth. Still Life. Picture. 20. Pritchard, Dorothy. Portrait of Jean Ebaugh. Picture. 21. Martindale, Virginia. Study of Lilies. Picture. 21

    Last male sperm precedence in a polygamous squid

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    Differential sperm usage from consecutive matings, or sperm precedence, is vital in determining male reproductive success and the outcome of sperm competition for many organisms. Sperm precedence also has significant consequences for mating system dynamics, including both male and female adaptations for increasing reproductive success and avoiding the costs of mating. Despite sexual selection being a strong driver of reproductive behaviour and morphology in cephalopods, surprisingly few studies have investigated sperm dynamics in this group. To redress this gap, we experimentally quantified sperm precedence patterns in the dumpling squid, Euprymna tasmanica, controlling for recent male mating history (first vs. second mating), mating position, and mating frequency. We found that the last male to mate gains an advantage in this system, with the second mating male siring up to 75% of offspring at the beginning of the laying period. The proportion of offspring attributable to the second mating male decreases to 54% by the end of the laying period, potentially as a result of changes in the velocity or number of sperm released from spermatangia over time. There is also significant variation among females in patterns of sperm precedence. This variation was not associated with whether it was the male's first or second mating, male mass, the duration of copulation or the number of pumps (sperm removal behaviour) by the second male. If widespread in cephalopods, last male sperm precedence could help to explain the evolution of mate guarding (or long copulation duration) and sperm removal behaviour in this group

    Numerical models of collisions between core-collapse supernovae and circumstellar shells

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    Recent observations of luminous Type IIn supernovae (SNe) provide compelling evidence that massive circumstellar shells surround their progenitors. In this paper we investigate how the properties of such shells influence the SN lightcurve by conducting numerical simulations of the interaction between an expanding SN and a circumstellar shell ejected a few years prior to core collapse. Our parameter study explores how the emergent luminosity depends on a range of circumstellar shell masses, velocities, geometries, and wind mass-loss rates, as well as variations in the SN mass and energy. We find that the shell mass is the most important parameter, in the sense that higher shell masses (or higher ratios of M_shell/M_SN) lead to higher peak luminosities and higher efficiencies in converting shock energy into visual light. Lower mass shells can also cause high peak luminosities if the shell is slow or if the SN ejecta are very fast, but only for a short time. Sustaining a high luminosity for durations of more than 100 days requires massive circumstellar shells of order 10 M_sun or more. This reaffirms previous comparisons between pre-SN shells and shells produced by giant eruptions of luminous blue variables (LBVs), although the physical mechanism responsible for these outbursts remains uncertain. The lightcurve shape and observed shell velocity can help diagnose the approximate size and density of the circumstellar shell, and it may be possible to distinguish between spherical and bipolar shells with multi-wavelength lightcurves. These models are merely illustrative. One can, of course, achieve even higher luminosities and longer duration light curves from interaction by increasing the explosion energy and shell mass beyond values adopted here.Comment: Accepted for publication in MNRAS. Tables of numerical results (SN lightcurves and velocities) to be published online. (Updated to fix figures

    Geography : the state of the discipline in South Africa (2000 - 2001)

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    The research team presents the findings of a comprehensive investigation into the status and role of Geography as an academic discipline in South Africa. The paper begins by placing the discipline in historical and epistemological context. Extensive and intensive interviews were conducted with geographers at all South African universities and, on a smaller scale, in the workplace. Information was also gleaned from an array of documents. Comments on the characteristics of university departments, general school education, the geography research environment the geographer in the workplace are given. Emerging trends, many of which relate to recent socio-political change, show that contemporary emphasis is on applied geography, specific fields of specialisation, the accommodation of Environmental Science and Environmental Management, skills training and on curriculum development with a marked vocational orientation. As geographers continue addressing national and international environmental and social issues in their professional endeavours, they are alerted to critical concerns voiced with conviction by practising geographers. In the final analysis a positive conclusion is reached and the academic merit and status of the discipline is confirmed

    A Report on the Seminar on Demand for Farm Products

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    This report includes papers presented and discussed at a seminar on demand for farm products, The seminar was sponsored by the Center for Agricultural Adjustment of the Division of Agriculture, Iowa State College, The seminar met for two hours per week for three months during the spring quarter. The seminar was organized to include about 60 members formally designated by the committee. These seminar members, as well as a formal discussant for each topic, evaluated the presentation at each session.https://lib.dr.iastate.edu/card_reports/1001/thumbnail.jp

    Correction to: The Edinburgh Consensus: preparing for the advent of disease-modifying therapies for Alzheimer's disease.

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    Since the publication of this article [1], it has come to the attention of the authors that information for one of the authors was not included in the competing interests section. Craig Richie has declared potential competing interests with the following companies; Janssen, Eisai, Pfizer, Eli Lilly, Roche Diagnostics, Boeringher Ingleheim, Novartis, AC Immune, Ixico, Aridhia, Amgen, Berry Consultants, Lundbeck, Sanofi, Quintiles (IQVIA) and Takeda. The full competing interests section for this article can be found below

    Coral reef conservation solution-scape white paper

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    In the face of climate change, warming oceans, and repeated mass coral bleaching, coral reef conservation is at a timely crossroads. There is a new urgency to support and strengthen a rich history of conservation partnerships and actions, while also building toward new actions to meet unparalleled global threats. The goal of this white paper is to synthesize and summarize the diversity of tools, approaches and solutions for coral reef conservation implemented to date and to understand the enabling conditions that lead to successful coral reef conservation. Framed as a “solution-scape,” this white paper seeks to support ongoing decisions to strengthen existing assets and build new investments into portfolios of global coral reef conservation that are equitable and aligned with diverse cultures and worldviews

    Military deployment, masculinity and trauma : reviewing the connections

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    This article reviews the literature on deployment trauma and examines the limitations of conventional understandings of trauma as they relate to veterans’ experiences. It suggests that the failure to take into account social influences and social relationships limits the usefulness of conventional approaches to trauma. The article considers the role that masculinity plays in male veterans’ experience of and sense making about trauma. It is suggested that while formal recognition of posttraumatic stress disorder in the DSM has provided a helpful language for veterans, it is an incomplete response. A new model of masculinity that better enables the male veteran to speak about trauma and to reconnect with others has implications for counselling practice with veterans

    The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

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    The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure
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