63,041 research outputs found

    The origin of beach sediments on the North Queensland coast

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    Petrographic and granulometric analyses of North Queensland beach sediments indicate their affinity with sediments delivered to the coast by rivers, and it is shown that the beaches are largely derived from fluvial sediment reworked, sorted and distributed by the dominant south-easterly waves in coastal waters. Beach sediments are generally quartzose, with subordinate felspars and admixtures of coralline sediment near fringing reefs and lithic material near river mouths and rocky shore sectors. The prevailing northerly drift of shore sediment is reduced, and locally reversed, on sectors sheltered from the dominant south-easterly waves by headlands, reefs and islands. Variations in beach sediment are related to wave conditions, distance from river-mouth sources, and patterns of drift. Four Mile Beach, near Port Douglas, is identified as anomalous in its morphological and sedimentological characteristics. It has been cut off from former sources of sediment, both fluvial and longshore, as a result of reef extension around the mouth of Mowbray River, and is now essentially a relict beach system attaining sedimentological maturity

    PSR J2032+4127, the counterpart of TeV J2032+4130? Multiwavelength Monitoring of the Approach to Periastron

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    PSR J2032+4127 has recently been identified as being in a long period (45-50 years) binary in a highly eccentric orbit with the Be star MT91 213. Periastron is due to occur in November 2017 and this rare occurrence has prompted a multiwavelength monitoring campaign to determine if the system is a gamma-ray binary, and, if so, to study what would be only the second gamma-ray binary with a known compact object. In the same direction as TeV J2032+4130, gamma-ray emission from this binary system could be related to the extended very high energy gamma-ray emission from that region. As part of this monitoring, observations are being conducted by Swift, Fermi-LAT and VERITAS. We present the status of those observations, preliminary results and the plan for continued monitoring through periastron.Comment: 8 Pages, 4 figures, 1 table. In Proceedings of the 35th International Cosmic Ray Conference (ICRC 2017), Busan (South Korea

    An ‘objective-centred’ approach to course redesign: using learning objectives to integrate e-learning

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    This article describes the process of integrating e-learning into the M-level research methods course Research Synthesis for Policy and Practice. It explores an ‘objective-centred’ approach to course redesign. This entails using learning objectives as the basis for developing online activities and integrating technological tools. This article describes what this ‘objectives approach’ meant in practice and illustrates the importance of learning objectives for the redesign process. Embedding elearning into the course provides new opportunities to meet existing objectives in an innovative, and hopefully more effective, way. Technological tools provide the scope to extend and develop new learning objectives to better meet the needs of students. Whilst objectives are central to the redesign, the article highlights the significant role played by other types of knowledge, namely tutor experience, student views and research
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