968 research outputs found

    Endorsing cultural relevance whilst scaffolding academic literacies in a particular English for Pharmacy course

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    In this article, the writer investigates theexperience of a group of learners who weregiven academic language support in the context of a topic that was culturally relevantto them. These multicultural learners were registered for their first year of study fora South African Pharmacy degree. The scaffolding of reading and writing texts on thetopic of traditional healing systems was included in the English for Pharmacy course,although this was not a topic covered in any of learners’ content subjects. Supporteddeconstruction as well as reconstruction of texts about the indigenous healingtherapies of Africa and China, for example, was included in the English course, withthe aim of facilitating learner access to and success in the mastery of scientific textualconventions. The learners of the case study brought individual cultural identities toa higher educational environment that often did not acknowledge diverse culturalroots. Thus, a culturally relevant topic was included in the English learning situationto motivate the learners in the negotiation of meaning via scientific language patternsthat were appropriate to the context of their pharmacy studies. The learners weresupported in the negotiation of culturally familiar meaning via complex Englishtextual patterns that were also used in degree specific subjects such as: Pharmacology,Pharmacy Practice and Anatomy and Physiology. The research described in this articlefollowed a phenomenological approach that entailed qualitative data collected fromthe learners who wrote reflection papers, took part in informal interviews and wrote ascientific report on the topic of traditional healing

    Genre pedagogy in the mediation of socially-situated literacies acquisition – the experience of apprentices in a higher education community of practice

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    In this article, the writer explores learner experience during the scaffolding of subjectspecific academic literacies using a genre pedagogical approach that views linguistic expertise as a socially-situated phenomenon. For the learners of this case study, the mastery of the descriptive report genre, in particular, was fundamental for Anatomy and Physiology which is a core subject of the B Pharm (Bachelor of Pharmacy) degree at a South African higher educational institution. To facilitate success in completing a contextualised descriptive report assigned to the learners, the English for Pharmacy course was designed to support the Anatomy and Physiology module by providing collaborative pedagogic support of apprenticeship practices and mediation of academic literacy. The data collection involved an analysis of written work samples, interviews and reflections gathered from a group of first-year South African Pharmacy degree learners by determining the language lecturer’s explicit teaching practices to deconstruct the complexities of textual schemata rooted in genre

    Diving in Two Marine Lakes in Croatia

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    We describe the diving methods used for in-situ observations of the scyphozoan medusa, Aurelia sp., in two marine lakes on the island of Mljet, Croatia. Both lakes have a strong pycnocline at approximately 15 m. During this study (May, 2004) surface temperature was about 20o C; bottom temperature about 10o C. Visibility was 15 m to 30 m. Tide and currents were negligible. A dense resident population of Aurelia sp. and a predictable environment made this an ideal study site. Aurelia was most abundant in mid-water around the pycnocline. There were several dive objectives: specimen collection for laboratory analysis, population census, discrete plankton tows and direct observation of flow around swimming medusae. We used several methods for maintaining our orientation underwater including working from an anchor line, towing a tethered buoy, and use of a blue water rig. Because the environment was relatively benign we allowed the rig to drift free while the boat was standing by at a short distance. Often a tether was not required. This plan allowed the most freedom and provided an excellent reference throughout the dive

    Wrongful moderation: regulation of internet intermediary service provider liability and freedom of expression

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    Wrongful moderation deals with internet intermediary service providers allowing users to provide and receive user-provided information. The central question in this dissertation is how these providers are provided with a legal incentive to overregulate or underregulate user-provided information based on its content. Providers that offer functionalities for user-provided information are criticised for failing to counter illegal content and overregulating content that is not illegal but considered harmful by the provider. In the United States of America and the European Union, legislation is proposed to remedy such overregulation and underregulation. Overregulation and underregulation could be tied to how the liability of service providers is regulated. Overregulation and underregulation may even occur when the provider is exempted from liability for the content of user-provided information – especially when this exemption is conditional. The central question in Wrongful moderation is to what extent the liability regimes in the e-Commerce Directive (EU) (enacted in 2000) and Section 230 of the Communications Decency Act (CDA) (enacted in 1996) (US) provide a legal incentive to overregulate or underregulate user-provided information. The focus lies on providers that offer an online platform to share and receive user-provided information because these providers are best placed to intervene in the content of user-provided information. Because of this intermediary position, these providers are the most popular targets for (state) regulation.The Legitimacy and Effectiveness of Law & Governance in a World of Multilevel Jurisdiction

    Influence of nonmagnetic dielectric spacers on the spin wave response of one-dimensional planar magnonic crystals

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    The one-dimensional planar magnonic crystals are usually fabricated as a sequence of stripes intentionally or accidentally separated by non-magnetic spacers. The influence of spacers on shaping the spin wave spectra is complex and still not completely clarified. We performed the detailed numerical studies of the one-dimensional single- and bi-component magnonic crystals comprised of a periodic array of thin ferromagnetic stripes separated by non-magnetic spacers. We showed that the dynamic dipolar interactions between the stripes mediated by non-magnetic spacer, even ultra-narrow, significantly shift up the frequency of the ferromagnetic resonance and simultaneously reduce the spin wave group velocity, which is manifested by the flattening of the magnonic band. We attributed these changes in the spectra to the modifications of dipolar pinning and shape anisotropy both dependent on the width of the spacers and the thickness of the stripes, as well as to the dynamical magnetic volume charges formed due to inhomogeneous spin wave amplitude

    Design of an Indoor Sonic Boom Simulator at NASA Langley Research Center

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    Construction of a simulator to recreate the soundscape inside residential buildings exposed to sonic booms is scheduled to start during the summer of 2008 at NASA Langley Research Center. The new facility should be complete by the end of the year. The design of the simulator allows independent control of several factors that create the indoor soundscape. Variables that will be isolated include such factors as boom duration, overpressure, rise time, spectral shape, level of rattle, level of squeak, source of rattle and squeak, level of vibration and source of vibration. Test subjects inside the simulator will be asked to judge the simulated soundscape, which will represent realistic indoor boom exposure. Ultimately, this simulator will be used to develop a functional relationship between human response and the sound characteristics creating the indoor soundscape. A conceptual design has been developed by NASA personnel, and is currently being vetted through small-scale risk reduction tests that are being performed in-house. The purpose of this document is to introduce the conceptual design, identify how the indoor response will be simulated, briefly outline some of the risk reduction tests that have been completed to vet the design, and discuss the impact of these tests on the simulator design

    Dark-matter-nucleus scattering in chiral effective field theory

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    Chiral effective field theory allows one to calculate the response of few-nucleon systems to external currents, both for currents that can be probed in the Standard Model and ones that only exist in Standard-Model extensions. In combination with state-of-the-art many-body methods, the constraints from chiral symmetry can then be implemented in nuclear structure factors that describe the response of atomic nuclei in direct-detection searches for dark matter. We review the present status of this approach, including the role of coherently enhanced two-body currents, the discrimination of dark matter candidates based on the nuclear response functions, and limits on Higgs-portal dark matter

    Collisional properties of cold spin-polarized nitrogen gas: theory, experiment, and prospects as a sympathetic coolant for trapped atoms and molecules

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    We report a combined experimental and theoretical study of collision-induced dipolar relaxation in a cold spin-polarized gas of atomic nitrogen (N). We use buffer gas cooling to create trapped samples of 14N and 15N atoms with densities 5+/-2 x 10^{12} cm-3 and measure their magnetic relaxation rates at milli-Kelvin temperatures. Rigorous quantum scattering calculations based on accurate ab initio interaction potentials for the 7Sigma_u electronic state of N2 demonstrate that dipolar relaxation in N + N collisions occurs at a slow rate of ~10^{-13} cm3/s over a wide range of temperatures (1 mK to 1 K) and magnetic fields (10 mT to 2 T). The calculated dipolar relaxation rates are insensitive to small variations of the interaction potential and to the magnitude of the spin-exchange interaction, enabling the accurate calibration of the measured N atom density. We find consistency between the calculated and experimentally determined rates. Our results suggest that N atoms are promising candidates for future experiments on sympathetic cooling of molecules.Comment: 48 pages, 17 figures, 3 table
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