68 research outputs found

    Sources of Military Change:Emulation, Politics, and Concept Development in UK Defence

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    Judging by its doctrinal publications, the UK Defence establishment stands poised to begin a process of unprecedented change. The language of ‘multi-domain’ thinking is prominent within this discourse and is identified as being a key vehicle via which UK Defence will deliver upon its programme of reform. This article seeks to offer an initial evaluation of these claims and to assess them in light of the burgeoning literatures on Western defence ‘transformation’ and military innovation that have emerged since the early 2000s. We argue that ‘multi-domain’ thinking reflects a form of ‘cosmetic’ emulation by the British Defence establishment and that its appearance within UK doctrine has been driven more by internal politics than by a clearly thought-through adoption of a new form of military practice.</p

    Perceived Links between Playing Surfaces and Injury: A Worldwide Study of Elite Association Football Players

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    This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Background: Injuries in association football (soccer) are debilitating for players and can also be detrimental to the success of a team or club. The type or condition of a playing surface has been empirically linked to injuries, yet results are inconclusive. The overall purpose of this study was to analyse elite football players’ perceived links between playing surfaces and injury from a worldwide cohort of players. The results of this study can help to inform areas for future playing surface research aimed at trying to alleviate user concerns and meet user (i.e. the player) needs. Methods: Quantitative data were collected from 1129 players across the globe to address the aim of this study. Results: Ninety-one percent of players believed the type or condition of a surface could increase injury risk. Abrasive injuries, along with soreness and pain, were perceived to be greater on artificial turf. Surface type, surface properties and age were all potential risk factors identified by the players and linked to the playing surfaces. Conclusions: The results identified three areas where future research should be focussed to help develop surfaces that alleviate user concerns and meet user (i.e. player) needs: (i) current reporting of soreness, pain or fatigue as injuries, (ii) contribution of surface properties to injury; and (iii) surface experience of players from different countries differentiates their views of injury risk

    Elite football players' perceptions of football turf and natural grass surface properties.

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    AbstractGiven the global spread of football (soccer) there are substantial differences in the playing surfaces used between FIFA member associations. This paper contains results from the second part of a study on elite football players’ perceptions of playing surfaces from across the globe. Using a questionnaire, which was developed based on an initial qualitative study, elite players’ perceptions of differences in surface properties between natural and artificial (football) turf were examined. In total, 1129 elite footballers, representing 43 countries across six FIFA confederations completed the questionnaire. Exploratory analysis of overall responses revealed that the players had strong opinions with regards to surface properties when directly comparing natural and football turf. In particular, a higher proportion of players stated that football turf was “Too hard/Harder”, “More level”, “More abrasive” and had “Less grip” compared to natural grass. The results also showed that overall players’ perceptions of surface properties, between natural grass and football turf were dependent on their experience of different playing surfaces during their junior and senior careers, in particular, the variability within football turf pitches

    Elite players’ perceptions of football playing surfaces: a mixed effects ordinal logistic regression model of players’ perceptions

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    The aim of this study was to determine potential explanatory factors that may be associated with different attitudes amongst the global population of elite footballers to the use of different surfaces for football. A questionnaire was used to capture elite football players’ perceptions of playing surfaces and a mixed effects ordinal logistic regression model was used to explore potential explanatory factors of players’ perceptions. In total, responses from 1129 players from 44 different countries were analysed. The majority of players expressed a strong preference for the use of Natural Turf pitches over alternatives such as Artificial Turf. The regression model, with a players’ country as a random effect, indicated that players were less favourable towards either Natural Turf or Artificial Turf where there was perceived to be greater variability in surface qualities or the surface was perceived to have less desirable properties. Player’s surface experience was also linked to their overall attitudes, with a suggestion that the quality of the Natural Turf surface players experienced dictated players’ support for Artificial Turf

    A simulation tool for better management of retinal services

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    Background: Advances in the management of retinal diseases have been fast-paced as new treatments become available, resulting in increasing numbers of patients receiving treatment in hospital retinal services. These patients require frequent and long-term follow-up and repeated treatments, resulting in increased pressure on clinical workloads. Due to limited clinic capacity, many National Health Service (NHS) clinics are failing to maintain recommended follow-up intervals for patients receiving care. As such, clear and robust, long term retinal service models are required to assess and respond to the needs of local populations, both currently and in the future. Methods: A discrete event simulation (DES) tool was developed to facilitate the improvement of retinal services by identifying efficiencies and cost savings within the pathway of care. For a mid-size hospital in England serving a population of over 500,000, we used 36 months of patient level data in conjunction with statistical forecasting and simulation to predict the impact of making changes within the service. Results: A simulation of increased demand and a potential solution of the 'Treat and Extend' (T&E) regimen which is reported to result in better outcomes, in combination with virtual clinics which improve quality, effectiveness and productivity and thus increase capacity is presented. Without the virtual clinic, where T&E is implemented along with the current service, we notice a sharp increase in the number of follow-ups, number of Anti-VEGF injections, and utilisation of resources. In the case of combining T&E with virtual clinics, there is a negligible (almost 0%) impact on utilisation of resources. Conclusions: Expansion of services to accommodate increasing number of patients seen and treated in retinal services is feasible with service re-organisation. It is inevitable that some form of initial investment is required to implement service expansion through T&E and virtual clinics. However, modelling with DES indicates that such investment is outweighed by cost reductions in the long term as more patients receive optimal treatment and retain vision with better outcomes. The model also shows that the service will experience an average of 10% increase in surplus capacity.Peer reviewedFinal Published versio

    Planetary Health in CanMEDS 2025

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    Variations in eastern North Pacific demersal fish biomass based on the U.S. west coast groundfish bottom trawl survey (2003–2010)

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    In response to declining biomass of Northeast Pacific groundfish in the late 1990s and to improve the scientific basis for management of the fishery, the Northwest Fisheries Science Center standardized and enhanced their annual bottom trawl survey in 2003. The survey was expanded to include the entire area along the U.S. west coast at depths of 55–1280 m. Coast-wide biomass and species richness significantly decreased during the first eight years (2003–10) of this fishery-independent survey. We observed an overall tendency toward declining biomass for 62 dominant taxa combined (fishery target and nontarget species) and four of seven subgroups (including cartilaginous fish, flatfishes, shelf rockfishes, and other shelf species), despite increasing or variable biomass trends in individual species. These decreases occurred during a period of reduced catch for groundfish along the shelf and upper slope regions relative to historical rates. We used information from multiple stock assessments to aggregate species into three groups: 1) with strong recruitment, 2) without strong recruitment in 1999, and 3) with unknown recruitment level. For each group, we evaluated whether declining biomass was primarily related to depletion (using year as a proxy) or environmental factors (i.e., variation in the Pacific Decadal Oscillation). According to Akaike’s information criterion, changes in aggregate biomass for species with strong recruitment were more closely related to year, whereas those with no strong recruitment were more closely related to climate. The significant decline in biomass for species without strong recruitment confirms that factors other than depletion of the exceptional 1999 year class may be responsible for the observed decrease in biomass along the U.S. west coast

    A Simple Whole-Plasmid PCR Method to Construct High-Diversity Synthetic Phage Display Libraries

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    Phage display technology utilises peptide and antibody libraries with very high diversities to select ligands with specific binding properties. The production of such libraries can be labour intensive and technically challenging and whilst there are commercial sources of libraries, the exploitation of the resulting binders is constrained by ownership of the libraries. Here, a peptide library of ~ 1 × 109 variants for display on gene VIII was produced alongside three VHH antibody libraries with similar diversity, where 12mer, 16mer or 21mer CDR3s were introduced into the highly stable cAbBCII10 scaffold displayed on gene III. The cloning strategy used a simple whole-plasmid PCR method and type IIS restriction enzyme assembly that facilitate the seamless insertion of diversity into any suitable phage coat protein or antibody scaffold. This method reproducibly produced 1 × 109 variants from just 10 transformations and the four libraries had relatively low bias with 82 to 86% of all sequences present as single copies. The functionality of both peptide and antibody libraries were demonstrated by selection of ligands with specific binding properties by biopanning. The peptide library was used to epitope map a monoclonal antibody. The VHH libraries were pooled and used to select an antibody to recombinant human collagen type 1

    The Time to Act Is Now: Addressing the Challenges of Being a Student, Staff, or Faculty Member at DU While Also Being a Parent to Young Children

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    The growing number of undergraduate and graduate students who are simultaneously raising children while attending school requires the attention of institutions that want to support their students through the completion of their intended program. Compared to traditional students, these students have greater time and financial restraints, lower graduation rates, and require accommodation, support, and resources to help them maintain their academic standing. This issue is not isolated to just students however. Staff and faculty at academic institutions are also balancing their family and work responsibilities. With an increase in the number of households where one or two adults work full time, more institutional employees are having to negotiate issues of childcare, parental leave, and the ways in which their family responsibilities are perceived by colleagues and employers. In 2017, it was found that many DU community members were struggling with issues of childcare, a child friendly environment at work, and institutional policies related to childcare at the University. These findings led to a study, conducted by the Applied Anthropology class of 2018, aimed at identifying solutions and recommendations for the aforementioned challenges. The study was exploratory and utilized mixed qualitative data collection and analysis methods. The class conducted interviews, surveys, and archival research and used thematic analysis techniques to identify overarching themes that informed the findings and suggestions of this project. Through this research three major needs were identified: clear communication of policies, accommodations for students, and on-site day care. Respondents from this and previous studies at DU identified that classroom policies, policies regarding parental leave, available childcare, and Fisher were being communicated either ineffectively or inaccurately. This has led to confusion, frustration, feelings of job insecurity, and unmet expectations regarding what resources and support DU actually offers parents. There is also a lack of policies in place for student parents, which makes creating schedules and fulfilling academic requirements more challenging for these nontraditional students. The most significant issue identified however was the lack of childcare at DU and the desire for an on-site daycare center. Respondents explained that Denver has a limited number of available, convenient, and affordable daycare options, that Fisher is not meeting their needs, and that they would like to see a facility designed specifically for DU students, staff, and faculty. In response to these challenges, this study suggests the assemblage and dissemination of accurate and clearly communicated childcare related policies, the creation of policies for student parents, and an on-site daycare facility for the DU community. Research and efforts to understand and alleviate these challenges have occurred at DU since the 1970s, and many of the identified needs and desired solutions have not changed over the past fifty years. However, because previous efforts have been powered by those in need of services, the momentum behind each effort has inevitably dissolved. A way to accomplish and sustain these suggestions and actively work towards making DU a more child and family friendly campus is by creating a permanent employee position at DU to handle these issues. This would help centralize information and policies, assist with their clear communication, and focus consistent and sustainable efforts towards helping DU students, staff, and faculty balance their work and family life
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