317 research outputs found

    Running a professional academic-related team in an academic environment

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    This paper considers the position of a large full-range business school and ways in which it can improve its efficiency and effectiveness, and enhance students' learning environment by the strategic use of academic-related staff within key roles in the School. Some of these roles have traditionally been undertaken by academic staff, but the increased complexity of the Business School environment makes it impossible for academic staff to undertake all roles if the School wants to be innovative and successful in a highly changing external environment. The investigation is carried out via a series of semi-structure interviews, conducted with academic and academic related staff across the School. This is compared with a review of recent literature in the subject. The paper concludes that both the efficient running of the School and the learning environment of students are improved via the partnership of academics and support staff. The findings reveal, however, that the use of academic-related staff must be done sensitively, to ensure that institutions do not become over bureaucratic or academics alienated in the drive to focus on the student experience

    Linking performance-related pay to a Business School's mission and objectives

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    This paper first analyses the Performance Related Pay (PRP) schemes developed from 1992/3 to 2002/3 in a large Business School in England and then the School’s mission and strategic objectives in that period. The PRP schemes changed to include more specific performance indicators and these were increasingly linked to the objectives. The School’s resources allocated to PRP increased from £44,000 in 1992/93 to £355,000 in 2002/3 and from 1.08% in 1995/96 to 2.37% of the School’s income in 2002/3. As well as examining the changing strategic objectives and PRP schemes, the paper charts the development of the School’s reputation and resources and the role which staff motivation via PRP played at different stages. The paper concludes that the PRP scheme was at its most effective when it was clearly linked with the School’s strategic objectives, but that the relationship between objectives and motivation may be more complex than apparent from this study. Although the PRP scheme under consideration also applies to academic related staff, this paper concentrates on the effect on academic staff

    Effects of swim-with-dolphin tourism on the behaviour of a threatened species, the Burrunan dolphin Tursiops Australis

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    Burrunan dolphins Tursiops australis are frequently targeted by tourism operations in Port Phillip Bay, Australia. This study aimed to provide first insights into whether swim-with-dolphin (SWD) vessels in Port Phillip Bay affect the behaviour of Burrunan dolphins via the use of Markov chain models. The presence of SWD vessels affected dolphins' travelling, foraging, milling and socialising behaviours. The time dolphins spent foraging in the presence of SWD vessels was significantly reduced, with average foraging bout length decreasing by 13.6%, foraging recovery time increasing by 47.6%, and the probability of transitioning from foraging to milling increasing 4-fold. Conversely, dolphins spent significantly more time milling and socialising in the presence of SWD vessels. The reduction in time spent foraging when SWD vessels are present could lead to a decrease in dolphins' rate of energy acquisition, whilst the increase in milling could increase their energy expenditure. Collectively, this may lead to reduced biological fitness with population level consequences. However, although the short-term behavioural budget of the dolphin population was significantly affected, SWD vessels did not significantly affect the cumulative (i.e. yearly) behavioural budget of Burrunan dolphins. Thus, the assumption that boat-based cetacean tourism has major negative effects on targeted populations may be flawed in some cases

    Recommendations for a ‘Wellbeing Curriculum’ to Mitigate Undergraduate Psychological Distress Associated with Lack of Careers Confidence and Poor University Engagement

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    To foster a ‘wellbeing curriculum’ in a climate with an increasingly competitive graduate jobs market, we believe it is critical to support undergraduate career development and to develop positive peer and educator relationships, particularly for non vocational degree programs. However, these relationships between undergraduate wellbeing and their career development or peer/educator relationships have not been specifically examined. This study used a mixed methods approach to examine if poor career development or university engagement (quality of relationships with peers or educators, use of the university careers and counselling services, time studying) were associated with psychological distress for students in non vocational degree programs. Undergraduates (biomedical science; n=1100) from five Australian universities participated in a survey to investigate relationships between psychological distress, as determined by their responses to the Depression, Anxiety and Stress Scales, and their career development or university engagement. Almost half of the students lacked confidence in their ‘future employment and job prospects’. Students’ psychological distress was significantly correlated with lack of confidence with their career development, poor relationships with their peers and educators and little use of the counselling service. Further exploration of these factors in student focus groups highlighted stress associated with academic competition between students and a critical need for undergraduate career development, especially industry placements. We provide pivotal recommendations to promote undergraduate and educator wellbeing, by developing a ‘wellbeing curriculum’ that supports career development and positive relationships between students and their peers and educators, particularly vital for non vocational degrees

    An open-source solution for advanced imaging flow cytometry data analysis using machine learning

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    Imaging flow cytometry (IFC) enables the high throughput collection of morphological and spatial information from hundreds of thousands of single cells. This high content, information rich image data can in theory resolve important biological differences among complex, often heterogeneous biological samples. However, data analysis is often performed in a highly manual and subjective manner using very limited image analysis techniques in combination with conventional flow cytometry gating strategies. This approach is not scalable to the hundreds of available image-based features per cell and thus makes use of only a fraction of the spatial and morphometric information. As a result, the quality, reproducibility and rigour of results are limited by the skill, experience and ingenuity of the data analyst. Here, we describe a pipeline using open-source software that leverages the rich information in digital imagery using machine learning algorithms. Compensated and corrected raw image files (.rif) data files from an imaging flow cytometer (the proprietary .cif file format) are imported into the open-source software CellProfiler, where an image processing pipeline identifies cells and subcellular compartments allowing hundreds of morphological features to be measured. This high-dimensional data can then be analysed using cutting-edge machine learning and clustering approaches using “user-friendly” platforms such as CellProfiler Analyst. Researchers can train an automated cell classifier to recognize different cell types, cell cycle phases, drug treatment/control conditions, etc., using supervised machine learning. This workflow should enable the scientific community to leverage the full analytical power of IFC-derived data set. It will help to reveal otherwise unappreciated populations of cells based on features that may be hidden to the human eye that include subtle measured differences in label free detection channels such as bright-field and dark-field imagery

    Stimulation of Activin A/Nodal signaling is insufficient to induce definitive endoderm formation of cord blood-derived unrestricted somatic stem cells

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    Introduction: Unrestricted somatic stem cells (USSC) derived from umbilical cord blood are an attractive alternative to human embryonic stem cells (hESC) for cellular therapy. USSC are capable of forming cells representative of all three germ line layers. The aim of this study was to determine the potential of USSC to form definitive endoderm following induction with Activin A, a protein known to specify definitive endoderm formation of hESC. Methods: USSC were cultured for (1) three days with or without 100 ng/ml Activin A in either serum-free, low-serum or serum-containing media, (2) three days with or without 100 ng/ml Activin A in combination with 10 ng/ml FGF4 in pre-induction medium, or (3) four days with or without small molecules Induce Definitive Endoderm (IDE1, 100 nM; IDE2, 200 nM) in serum-free media. Formation of definitive endoderm was assessed using RT-PCR for gene markers of endoderm (Sox17, FOXA2 and TTF1) and lung epithelium (surfactant protein C; SPC) and cystic fibrosis transmembrane conductance regulator; CFTR). The differentiation capacity of Activin A treated USSC was also assessed. Results: Activin A or IDE1/2 induced formation of Sox17+ definitive endoderm from hESC but not from USSC. Activin A treated USSC retained their capacity to form cells of the ectoderm (nerve), mesoderm (bone) and endoderm (lung). Activin A in combination with FGF4 did not induce formation of Sox17+ definitive endoderm from USSC. USSC express both Activin A receptor subunits at the mRNA and protein level, indicating that these cells are capable of binding Activin A. Conclusions: Stimulation of the Nodal signaling pathway with Activin A or IDE1/2 is insufficient to induce definitive endoderm formation from USSC, indicating that USSC differ in their stem cell potential from hESC

    Impact of sustained transforming growth factor-β receptor inhibition on chromatin accessibility and gene expression in cultured human endometrial MSC

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    Endometrial mesenchymal stem cells (eMSC) drive the extraordinary regenerative capacity of the human endometrium. Clinical application of eMSC for therapeutic purposes is hampered by spontaneous differentiation and cellular senescence upon large-scale expansion in vitro. A83-01, a selective transforming growth factor-β receptor (TGFβ-R) inhibitor, promotes expansion of eMSC in culture by blocking differentiation and senescence, but the underlying mechanisms are incompletely understood. In this study, we combined RNA-seq and ATAC-seq to study the impact of sustained TGFβ-R inhibition on gene expression and chromatin architecture of eMSC. Treatment of primary eMSC with A83-01 for 5 weeks resulted in differential expression of 1,463 genes. Gene ontology analysis showed enrichment of genes implicated in cell growth whereas extracellular matrix genes and genes involved in cell fate commitment were downregulated. ATAC-seq analysis demonstrated that sustained TGFβ-R inhibition results in opening and closure of 3,555 and 2,412 chromatin loci, respectively. Motif analysis revealed marked enrichment of retinoic acid receptor (RAR) binding sites, which was paralleled by the induction of RARB, encoding retinoic acid receptor beta (RARβ). Selective RARβ inhibition attenuated proliferation and clonogenicity of A83-01 treated eMSC. Taken together, our study provides new insights into the gene networks and genome-wide chromatin changes that underpin maintenance of an undifferentiated phenotype of eMSC in prolonged culture

    Aquatic Mammals

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    Abstract Within Australian waters, short-beaked common dolphins (Delphinus delphis) are exposed to a variety of human-induced impacts, including aquaculture and fisheries. Nonetheless, the occurrence and distribution of common dolphins within these waters remains unknown. Data detailed herein represent the first report of the occurrence and distribution of common dolphins from Australian waters. The density and relative abundance of common dolphins within Gulf St. Vincent (GSV), South Australia, was examined between September 2005 and May 2008 using systematic boat surveys. During 1,850 km of survey effort, a total of 108 independent groups, involving 564 common dolphins, were observed. Group size ranged from 2 to 21 individuals (mean = 5.26, SD = 3.687), with immature dolphins found in larger group sizes. Adults were the most frequent age class observed in this population (60.3%, n = 340), with neonates and calves observed most frequently between December and April. Sighting frequency was 3 groups/100 km² travelled, with an encounter rate of 16 common dolphins/100 km². The western longitude and southern latitude sections of GSV were used most frequently by this species, with most groups recorded in water depths of 35 to 40 m (mean = 37.2 m, SD = 1.4), and in areas 21 to 31 km from land (mean = 27.4 km, SD = 2.6). Common dolphin density was estimated to be 0.5 dolphins/100 km 2 , with a population estimate of 1,957 dolphins within their preferred habitat (waters deeper than 14 m). Results suggest the GSV is important for this species and that common dolphins use these waters as a nursery area

    Diagnostic Potential of Imaging Flow Cytometry

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    Imaging flow cytometry (IFC) captures multichannel images of hundreds of thousands of single cells within minutes. IFC is seeing a paradigm shift from low- to high-information-content analysis, driven partly by deep learning algorithms. We predict a wealth of applications with potential translation into clinical practice
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