Changes that occur in the knowledge and attitudes of individuals and a group who attend a six week sermon series on AIDS

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Propagation of the 2012 March Coronal Mass Ejections from the Sun to Heliopause

In 2012 March the Sun exhibited extraordinary activities. In particular, the active region NOAA AR 11429 emitted a series of large coronal mass ejections (CMEs) which were imaged by STEREO as it rotated with the Sun from the east to west. These sustained eruptions are expected to generate a global shell of disturbed material sweeping through the heliosphere. A cluster of shocks and interplanetary CMEs (ICMEs) were observed near the Earth, and are propagated outward from 1 AU using an MHD model. The transient streams interact with each other, which erases memory of the source and results in a large merged interaction region (MIR) with a preceding shock. The MHD model predicts that the shock and MIR would reach 120 AU around 2013 April 22, which agrees well with the period of radio emissions and the time of a transient disturbance in galactic cosmic rays detected by Voyager 1. These results are important for understanding the "fate" of CMEs in the outer heliosphere and provide confidence that the heliopause is located around 120 AU from the Sun.Comment: 13 pages, 5 figures, accepted for publication in ApJ Letter

Stereociliary Myosin-1c Receptors Are Sensitive to Calcium Chelation and Absent from Cadherin 23 Mutant Mice

The identities of some of the constituents of the hair-cell transduction apparatus have been elucidated only recently. The molecular motor myosin-1c (Myo1c) functions in adaptation of the hair-cell response to sustained mechanical stimuli and is therefore an integral part of the transduction complex. Recent data indicate that Myo1c interacts in vitro with two other molecules proposed to be important for transduction: cadherin 23 (Cdh23), a candidate for the stereociliary tip link, and phosphatidylinositol 4,5-bisphosphate (PIP2), which is abundant in the membranes of hair-cell stereocilia. It is not known, however, whether these interactions occur in hair cells. Using an in situ binding assay on saccular hair cells, we demonstrated previously that Myo1c interacts with molecules at stereociliary tips, the site of transduction, through sequences contained within its calmodulin (CaM)-binding neck domain, which can bind up to four CaM molecules. In the current study, we identify the second CaM-binding IQ domain as a region of Myo1c that mediates CaM-sensitive binding to stereociliary tips and to PIP2 immobilized on a solid support. Binding of Myo1c to stereociliary tips of cochlear and vestibular hair cells is disrupted by treatments that break tip links. In addition, Myo1c does not bind to stereocilia from mice whose hair cells lack Cdh23 protein despite the presence of PIP2 in the stereociliary membranes. Collectively, our data suggest that Myo1c and Cdh23 interact at the tips of hair-cell stereocilia and that this interaction is modulated by CaM

Learning from a distance : the experience of remote students

While there has been research into the provision of &lsquo;distance&rsquo; and &lsquo;off-campus&rsquo; education, both in relation to technology and to curriculum, little attention has been given to the experiences of students studying in geographically remote locations, where the remoteness has been an aspect of investigation. This study aimed to investigate the experiences of such students, and to suggest strategies to support them. The students recruited for this project were undergraduate and postgraduate students from remote locations around Australia who had studied at Deakin University between 2003 through 2007. They were interviewed by telephone. The three key issues identified by participants were a sense of isolation, the attitudes and knowledge of the teaching staff; and students&rsquo; knowledge and use of learning technologies.<br /

‘Stepping Out’: Enabling Community Access to Green Space through Inter-disciplinary Practice Learning in Plymouth, UK

This paper presents a small-scale action research study of public health nursing and social work students’ practice-based learning. The study aimed to identify collaborative opportunities to improve access to green space for community residents in Plymouth, in the United Kingdom (UK). The student experience was nested within ‘Stepping Stones to Nature’ (SS2N), a city-wide initiative enabling local residents’ access to green space. A local health impact assessment (HIA) provided an over-arching partnership framework. The pedagogical aim was for students to learn and work together to make a real contribution to people’s lives. This innovation was enabled through the Plymouth University’s Teaching and Learning Strategy (2009–2012) and the Social Work programmes established structures for student’s learning in Community Development Projects (CDP). Through the action research methodology, we explored the potential for community development as a framework for inter-disciplinary learning. Our findings suggest that an inter-disciplinary pedagogy emerges through a community development framework for students’ practice-basedlearning.Inter-disciplinary learning was achieved through student-centred learning networks; a key shared concept was ‘Wellbeing and Sustainability’. Within this new practice-based context student learning is tenuously situated, yet positively achieved. Through changing health and social behaviours, student participation demonstrates: a) professional knowledge and skills, b) collaborative working, and c) change agency. SS2N partnerships enabled student’s evidence-based practice and highlighted that a student’s individual relationship to green space was critical to their engagement. Pedagogy that places inter-disciplinary practice learning at the core of teaching and learning about sustainability, environment and access to green space is indicated, alongside collaborative working to enable students to actively contribute to reducing health inequalities

Sun-to-Earth Characteristics of Two Coronal Mass Ejections Interacting near 1 AU: Formation of a Complex Ejecta and Generation of a Two-Step Geomagnetic Storm

On 2012 September 30 - October 1 the Earth underwent a two-step geomagnetic storm. We examine the Sun-to-Earth characteristics of the coronal mass ejections (CMEs) responsible for the geomagnetic storm with combined heliospheric imaging and in situ observations. The first CME, which occurred on 2012 September 25, is a slow event and shows an acceleration followed by a nearly invariant speed in the whole Sun-Earth space. The second event, launched from the Sun on 2012 September 27, exhibits a quick acceleration, then a rapid deceleration and finally a nearly constant speed, a typical Sun-to-Earth propagation profile for fast CMEs \citep{liu13}. These two CMEs interacted near 1 AU as predicted by the heliospheric imaging observations and formed a complex ejecta observed at Wind, with a shock inside that enhanced the pre-existing southward magnetic field. Reconstruction of the complex ejecta with the in situ data indicates an overall left-handed flux rope-like configuration, with an embedded concave-outward shock front, a maximum magnetic field strength deviating from the flux rope axis and convex-outward field lines ahead of the shock. While the reconstruction results are consistent with the picture of CME-CME interactions, a magnetic cloud-like structure without clear signs of CME interactions \citep{lugaz14} is anticipated when the merging process is finished.Comment: 15 pages, 5 figures. Accepted for publication in ApJ Letter

On Sun-to-Earth Propagation of Coronal Mass Ejections: 2. Slow Events and Comparison with Others

As a follow-up study on Sun-to-Earth propagation of fast coronal mass ejections (CMEs), we examine the Sun-to-Earth characteristics of slow CMEs combining heliospheric imaging and in situ observations. Three events of particular interest, the 2010 June 16, 2011 March 25 and 2012 September 25 CMEs, are selected for this study. We compare slow CMEs with fast and intermediate-speed events, and obtain key results complementing the attempt of \citet{liu13} to create a general picture of CME Sun-to-Earth propagation: (1) the Sun-to-Earth propagation of a typical slow CME can be approximately described by two phases, a gradual acceleration out to about 20-30 solar radii, followed by a nearly invariant speed around the average solar wind level, (2) comparison between different types of CMEs indicates that faster CMEs tend to accelerate and decelerate more rapidly and have shorter cessation distances for the acceleration and deceleration, (3) both intermediate-speed and slow CMEs would have a speed comparable to the average solar wind level before reaching 1 AU, (4) slow CMEs have a high potential to interact with other solar wind structures in the Sun-Earth space due to their slow motion, providing critical ingredients to enhance space weather, and (5) the slow CMEs studied here lack strong magnetic fields at the Earth but tend to preserve a flux-rope structure with axis generally perpendicular to the radial direction from the Sun. We also suggest a "best" strategy for the application of a triangulation concept in determining CME Sun-to-Earth kinematics, which helps to clarify confusions about CME geometry assumptions in the triangulation and to improve CME analysis and observations.Comment: 37 pages, 13 figures, accepted for publication in ApJ Supplemen

Post-trafficking bordering practices : perverse co-production, marking and stretching borders

The research for this paper was funded by the Economic and Social Research Council – ESRC Res-062-23-1490: ‘Post Trafficking in Nepal: Sexuality and Citizenship in Livelihood Strategies’.This paper highlights the significance of post-trafficking scenarios for understanding bordering practices in political geography. In so doing, it addresses two significant research gaps: the lack of attention to trafficking in geography and the failure of wider interdisciplinary debates to engage with post-trafficking specifically. While extensive research in political geography has addressed the related experiences of refugees, asylum seekers and 'illegals', much of this work has centred on policies, processes and practices that aim to keep 'unwanted strangers out'. By contrast, very little research has addressed how the border is configured for and by those who are crossing-back over; those who are 'returning home', in this case from diverse trafficking situations. The paper draws on recent empirical research on post-trafficking citizenship and livelihoods in Nepal which examined how women returning from trafficking situations deal with stigma and marginalisation. Our analysis illuminates how bordering practices circumscribe and shape women's lives in powerful ways as they seek to (re)establish a sense of belonging and respect. We examine the interplay of state and non-state actors (national and transnational) in structuring mobility and anti-trafficking advocacy through a range of bordering practices and explore how the border is (co-)produced by varied actors at different border sites. This includes women returning from diverse trafficking situations, who invoke the border to argue that they are 'not as trafficked' as other women, and others who perform the border differently as agents for trafficking prevention.Publisher PDFPeer reviewe