Student engagement, ‘learnification’ and the sociomaterial: critical perspectives on higher education policy

The term ‘student engagement’ has become ubiquitous in mainstream discourses concerning higher education in the UK and beyond. The term is used to denote a desirable set of practices and orientations in students which should be worked towards or encouraged in order for teaching in higher education to be deemed successful — as such, it has enormous influence in the higher education (HE) as part of a discourse which carries powerful ideological force in the sector. However, as Kahn (Br Educ Res J 40(6):1005–1018, 2013) points out, it is a concept which is weakly theorised in the literature. This paper will interrogate the concept in order to deepen understanding of how the term operates. I will argue first that the notion often relies on typological categories which tend to posit the individual as the primary site of student engagement and secondly that this is primarily identified in interlocution or observable interaction. Drawing on the work of Gert Biesta, I will argue that this position reflects a broader trend towards ‘learnification’ in higher education, which positions teaching as problematic and inherently repressive. I seek to build on this critique by arguing for a reframing which recognises the sociomaterial and radically distributed nature of human and non-human agency in day-to-day student engagement

Multimodal longitudinal journaling

This chapter outlines the case for an holistic approach to studying e-learning, influenced by ethnography, New Literacy Studies (NLS) and sociomateriality (a tradition of work related to posthumanism and material semiotics). The theo- retical framing for such work is presented and related to developments in ethnog- raphy and digital anthropology. To illustrate this approach, methods are described that were used to enact this framework in the context of a study of graduate students’ digital literacies

cAMP/PKA signaling balances respiratory activity with mitochondria dependent apoptosis via transcriptional regulation

Background Appropriate control of mitochondrial function, morphology and biogenesis are crucial determinants of the general health of eukaryotic cells. It is therefore imperative that we understand the mechanisms that co-ordinate mitochondrial function with environmental signaling systems. The regulation of yeast mitochondrial function in response to nutritional change can be modulated by PKA activity. Unregulated PKA activity can lead to the production of mitochondria that are prone to the production of ROS, and an apoptotic form of cell death. Results We present evidence that mitochondria are sensitive to the level of cAMP/PKA signaling and can respond by modulating levels of respiratory activity or committing to self execution. The inappropriate activation of one of the yeast PKA catalytic subunits, Tpk3p, is sufficient to commit cells to an apoptotic death through transcriptional changes that promote the production of dysfunctional, ROS producing mitochondria. Our data implies that cAMP/PKA regulation of mitochondrial function that promotes apoptosis engages the function of multiple transcription factors, including HAP4, SOK2 and SCO1. Conclusions We propose that in yeast, as is the case in mammalian cells, mitochondrial function and biogenesis are controlled in response to environmental change by the concerted regulation of multiple transcription factors. The visualization of cAMP/TPK3 induced cell death within yeast colonies supports a model that PKA regulation plays a physiological role in coordinating respiratory function and cell death with nutritional status in budding yeast

The determinants and consequences of adult nursing staff turnover: a systematic review of systematic reviews.

BACKGROUND: Nurses leaving their jobs and the profession are an issue of international concern, with supply-demand gaps for nurses reported to be widening. There is a large body of existing literature, much of which is already in review form. In order to advance the usefulness of the literature for nurse and human resource managers, we undertook an overview (review of systematic reviews). The aim of the overview was to identify high quality evidence of the determinants and consequences of turnover in adult nursing. METHODS: Reviews were identified which were published between 1990 and January 2015 in English using electronic databases (the Cochrane Database of Systematic Reviews, MEDLINE, EMBASE, Applied Social Sciences Index and Abstracts, CINAHL plus and SCOPUS) and forward searching. All stages of the review were conducted in parallel by two reviewers. Reviews were quality appraised using the Assessment of Multiple Systematic Reviews and their findings narratively synthesised. RESULTS: Nine reviews were included. We found that the current evidence is incomplete and has a number of important limitations. However, a body of moderate quality review evidence does exist giving a picture of multiple determinants of turnover in adult nursing, with - at the individual level - nurse stress and dissatisfaction being important factors and -at the organisational level - managerial style and supervisory support factors holding most weight. The consequences of turnover are only described in economic terms, but are considered significant. CONCLUSIONS: In making a quality assessment of the review as well as considering the quality of the included primary studies and specificity in the outcomes they measure, the overview found that the evidence is not as definitive as previously presented from individual reviews. Further research is required, of rigorous research design, whether quantitative or qualitative, particularly against the outcome of actual turnover as opposed to intention to leave. TRIAL REGISTRATION: PROSPERO Registration 17 March 2015: CRD42015017613

A half-site multimeric enzyme achieves its cooperativity without conformational changes

Cooperativity is a feature many multimeric proteins use to control activity. Here we show that the bacterial heptose isomerase GmhA displays homotropic positive and negative cooperativity among its four protomers. Most similar proteins achieve this through conformational changes: GmhA instead employs a delicate network of hydrogen bonds, and couples pairs of active sites controlled by a unique water channel. This network apparently raises the Lewis acidity of the catalytic zinc, thus increasing the activity at one active site at the cost of preventing substrate from adopting a reactive conformation at the paired negatively cooperative site – a “half-site” behavior. Our study establishes the principle that multimeric enzymes can exploit this cooperativity without conformational changes to maximize their catalytic power and control. More broadly, this subtlety by which enzymes regulate functions could be used to explore new inhibitor design strategies

Natural and anthropogenic changes to mangrove distributions in the Pioneer River Estuary (QLD, Australia)

We analyzed a time series of aerial photographs and Landsat satellite imagery of the Pioneer River Estuary (near Mackay, Queensland, Australia) to document both natural and anthropogenic changes in the area of mangroves available to filter river runoff between 1948 and 2002. Over 54 years, there was a net loss of 137 ha (22%) of tidal mangroves during four successive periods that were characterized by different driving mechanisms: (1) little net change (1948– 1962); (2) net gain from rapid mangrove expansion (1962–1972); (3) net loss from clearing and tidal isolation (1972–1991); and (4) net loss from a severe species-specific dieback affecting over 50% of remaining mangrove cover (1991–2002). Manual digitization of aerial photographs was accurate for mapping changes in the boundaries of mangrove distributions, but this technique underestimated the total loss due to dieback. Regions of mangrove dieback were identified and mapped more accurately and efficiently after applying the Normalized Difference Vegetation Index (NDVI) to Landsat Thematic Mapper satellite imagery, and then monitoring changes to the index over time. These remote sensing techniques to map and monitor mangrove changes are important for identifying habitat degradation, both spatially and temporally, in order to prioritize restoration for management of estuarine and adjacent marine ecosystems

Structural Vaccinology for Melioidosis Vaccine Design and Immunodiagnostics

Purpose of Review: Spurred by the successful application of structural vaccinology to other challenging bacterial and viral pathogens, we review the possibility of exploiting 3D structure computational-based recombinant antigen engineering strategies for the development of a protective melioidosis vaccine. Recent Findings: Structure-based epitope design approaches in the melioidosis field are preliminary and applied essentially by one research network. By combining Burkholderia pseudomallei antigen 3D structures and in silico epitope discovery methods, a panel of synthetic epitope peptides were designed and tested for their B and T cell stimulatory activities. Several peptides were found to be serodiagnostic for B. pseudomallei infection and two elicited bactericidal antibodies. Summary: A significant amount of B. pseudomallei antigen structures, epitopes, and immunological data is available. Future challenges will be to test all available B. pseudomallei epitopes, focusing on combing multiple B/T cell epitopes onto a single scaffold to generate components, stimulating both arms of the immune system

Further evidence that FSH causes bone loss independently of low estrogen

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