502 research outputs found

    Integration of professional judgement and decision-making in high-level adventure sports coaching practice

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    This study examined the integration of professional judgement and decision-making processes in adventure sports coaching. The study utilised a thematic analysis approach to investigate the decision-making practices of a sample of high-level adventure sports coaches over a series of sessions. Results revealed that, in order to make judgements and decisions in practice, expert coaches employ a range of practical and pedagogic management strategies to create and opportunistically use time for decision-making. These approaches include span of control and time management strategies to facilitate the decision-making process regarding risk management, venue selection, aims, objectives, session content, and differentiation of the coaching process. The implication for coaches, coach education, and accreditation is the recognition and training of the approaches that“create time” for the judgements in practice, namely“creating space to think”. The paper concludes by offering a template for a more expertise-focused progression in adventure sports coachin

    Accounting history in today\u27s business schools

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    Slocum and Sriram\u27s [2001] study of teaching accounting history found a decline from 1985-1997 in the number of courses with historical content at the doctoral and undergraduate level. Is this development a singular event for accounting or an example of what is happening in other business disciplines? Our study presents the results of a longitudinal and cross-disciplinary survey of members of AACSB International to determine the current state of the teaching of history in business schools. We find a similar decline in other business disciplines and offer suggestions about the relevance of history and steps that might be taken to encourage its study

    History in today\u27s business school

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    Members of the American Assembly of Collegiate Schools of Business were surveyed to determine to what extent the history of various business school subjects (accounting, economics, management, etc.) was a part of today\u27s curricula. Findings indicated widespread teaching of history and the feeling that more should be done. However, the findings also indicate that much of the current teaching is not being done in separate courses by professional historians or even those interested in history. Implications for curricula development are discussed

    Organizational Adaption to External Change in Tourism: The Case of the Fred Harvey Company

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    Organizational adaptations are strategic choices organizations make to adapt to changed market conditions. Those adaptations come about through internal change or through mergers and acquisitions. The Fred Harvey Company changed and adapted exceptionally well to serve customers in more than one industry and in rapidly changing business environments. The company was first linked to the Atchison, Topeka and the Santa Fe Railway and as westward traffic moved from railroads to highways, it was linked to U. S. Route 66. The company supplied eating places--Harvey Houses—and newsstands along the railroad and Route 66. The railroad changed when Route 66 was developed, and Route 66 changed with the Interstate Highway system, and the Harvey Company changed with them

    The Impact of Situational Factors On Information System (Is) Managerial Leader Behaviors: What Information Systems Employees Want

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    Information systems leadership has evolved dramatically over the past 40 years. Early in the era of computing most attention was focused on the technical skills of IS managers. As IS has become ubiquitous in our organizations and increasingly embedded in our everyday lives, the need for a broader approach to IS management has emerged with an increasing emphasis on non-technical skills in business practices and an appreciation of the impact of organizational culture. Further, information systems managers increasingly find themselves in crisis situations that may require different leadership skills to successfully navigate. These crises may be caused by the physical destruction of computer hardware, the loss of critically sensitive data, sophisticated hacking of company computers, or a coding error in a mission critical software program. The research on managerial leadership in crisis situations is relatively sparse; however, the research on managerial leadership behaviors for the information systems sector is essentially nonexistent. This research study attempts to fill that gap, finding that there are a few desired managerial leadership behaviors in common between the information systems group and other studied groups, as well as differences and desired shifts in priorities

    M2 Macrophages Activate WNT Signaling Pathway in Epithelial Cells: Relevance in Ulcerative Colitis

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    Macrophages, which exhibit great plasticity, are important components of the inflamed tissue and constitute an essential element of regenerative responses. Epithelial Wnt signalling is involved in mechanisms of proliferation and differentiation and expression of Wnt ligands by macrophages has been reported. We aim to determine whether the macrophage phenotype determines the expression of Wnt ligands, the influence of the macrophage phenotype in epithelial activation of Wnt signalling and the relevance of this pathway in ulcerative colitis. Human monocyte-derived macrophages and U937-derived macrophages were polarized towards M1 or M2 phenotypes and the expression of Wnt1 and Wnt3a was analyzed by qPCR. The effects of macrophages and the role of Wnt1 were analyzed on the expression of β-catenin, Tcf-4, c-Myc and markers of cell differentiation in a co-culture system with Caco-2 cells. Immunohistochemical staining of CD68, CD206, CD86, Wnt1, β-catenin and c-Myc were evaluated in the damaged and non-damaged mucosa of patients with UC. We also determined the mRNA expression of Lgr5 and c-Myc by qPCR and protein levels of β-catenin by western blot. Results show that M2, and no M1, activated the Wnt signaling pathway in co-culture epithelial cells through Wnt1 which impaired enterocyte differentiation. A significant increase in the number of CD206+ macrophages was observed in the damaged mucosa of chronic vs newly diagnosed patients. CD206 immunostaining co-localized with Wnt1 in the mucosa and these cells were associated with activation of canonical Wnt signalling pathway in epithelial cells and diminution of alkaline phosphatase activity. Our results show that M2 macrophages, and not M1, activate Wnt signalling pathways and decrease enterocyte differentiation in co-cultured epithelial cells. In the mucosa of UC patients, M2 macrophages increase with chronicity and are associated with activation of epithelial Wnt signalling and diminution in enterocyte differentiation

    Search for the lepton-family-number nonconserving decay \mu -> e + \gamma

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    The MEGA experiment, which searched for the muon- and electron-number violating decay \mu -> e + \gamma, is described. The spectrometer system, the calibrations, the data taking procedures, the data analysis, and the sensitivity of the experiment are discussed. The most stringent upper limit on the branching ratio of \mu -> e + \gamma) < 1.2 x 10^{-11} was obtained

    Biologics registers in RA: methodological aspects, current role and future applications

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    The beginning of the 21st century saw a biopharmaceutical revolution in the treatment of inflammatory rheumatic diseases, particularly rheumatoid arthritis. The fast-evolving use of biologic therapies highlighted the need to develop registers at national and international levels with the aim of collecting long-term data on patient outcomes. Over the past 15 years, many biologics registers have contributed a wealth of data and provided robust and reliable evidence on the use, effectiveness and safety of these therapies. The unavoidable challenges posed by the continuous introduction of new therapies, particularly with regard to understanding their long-term safety, highlights the importance of learning from experience with established biologic therapies. In this Perspectives article, the role of biologics registers in bridging the evidence gap between efficacy in clinical trials and real-world effectiveness is discussed, with a focus on methodological aspects of registers, their unique features and challenges and their role going forward

    Influence of 1α, 25-dihydroxyvitamin D3 [1, 25(OH)2D3] on the expression of Sox 9 and the transient receptor potential vanilloid 5/6 ion channels in equine articular chondrocytes

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    Background Sox 9 is a major marker of chondrocyte differentiation. When chondrocytes are cultured in vitro they progressively de-differentiate and this is associated with a decline in Sox 9 expression. The active form of vitamin D, 1, 25 (OH)2D3 has been shown to be protective of cartilage in both humans and animals. In this study equine articular chondrocytes were grown in culture and the effects of 1, 25 (OH)2D3 upon Sox 9 expression examined. The expression of the transient receptor potential vanilloid (TRPV) ion channels 5 and 6 in equine chondrocytes in vitro, we have previously shown, is inversely correlated with de-differentiation. The expression of these channels in response to 1, 25 (OH)2D3 administration was therefore also examined. Results The active form of vitamin D (1, 25 (OH)2D3) when administered to cultured equine chondrocytes at two different concentrations significantly increased the expression of Sox 9 at both. In contrast 1, 25 (OH)2D3 had no significant effect upon the expression of either TRPV 5 or 6 at either the protein or the mRNA level. Conclusions The increased expression of Sox 9, in equine articular chondrocytes in vitro, in response to the active form of vitamin D suggests that this compound could be utilized to inhibit the progressive de-differentiation that is normally observed in these cells. It is also supportive of previous studies indicating that 1α, 25-dihydroxyvitamin D3 can have a protective effect upon cartilage in animals in vivo. The previously observed correlation between the degree of differentiation and the expression levels of TRPV 5/6 had suggested that these ion channels may have a direct involvement in, or be modulated by, the differentiation process in vitro. The data in the present study do not support this

    Impact of volatile phenols and their precursors on wine quality and control measures of Brettanomyces/Dekkera yeasts

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    Volatile phenols are aromatic compounds and one of the key molecules responsible for olfactory defects in wine. The yeast genus Brettanomyces is the only major microorganism that has the ability to covert hydroxycinnamic acids into important levels of these compounds, especially 4-ethylphenol and 4-ethylguaiacol, in red wine. When 4-ethylphenols reach concentrations greater than the sensory threshold, all wine’s organoleptic characteristics might be influenced or damaged. The aim of this literature review is to provide a better understanding of the physicochemical, biochemical, and metabolic factors that are related to the levels of p-coumaric acid and volatile phenols in wine. Then, this work summarizes the different methods used for controlling the presence of Brettanomyces in wine and the production of ethylphenols
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