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A new methodology to inform maintenance decisions and budget requirements for bridges
No full textBridge maintenance decisions can have a significant impact on the whole life cost and carbon footprint of bridges. At present, bridge maintenance decisions in the UK are entirely cost driven due to budget constraints within Local Authorities. The UK has set a target to become carbon neutral by 2050, and therefore, bridge engineers need to consider the effects maintenance decisions will have on the carbon footprint of bridges. This paper uniquely implements the Structures Asset Valuation and Investment (SAVI) tool to appraise an example bridge, to determine the optimal maintenance strategy and cost, considering whole life costs, traffic delays and carbon emissions. This was accomplished through a parametric study comparing maintenance costs and traffic delays for different maintenance strategies. Carbon emissions for each maintenance strategy were estimated using a carbon calculator tool widely used in the bridge industry. Carbon emissions were monetised based on UK carbon valuations and incorporated into the whole life costing of the bridge. The research revealed that a planned preventive maintenance strategy was the most cost effective and sustainable strategy with 7.7% lower discounted maintenance costs and 7% less carbon compared to an unplanned reactive strategy
A new hybrid image denoising algorithm using adaptive and modified decision-based filters for enhanced image quality
No full textEnhanced temperature control performance in underground refuge chambers through optimization of air inlets layout
No full textHva fanden ('what the devil') : a conversation analytic investigation of swearing and stance in questions and quotation
No full textSuccessful retention strategies for nurses in home visiting nursing services : a scoping review
No full textThis scoping review aims to identify successful strategies, and underpinning mechanisms, for retaining nurses in home visiting nursing services. The method followed Joanna Briggs Institute guidance. Two researchers independently screened and reviewed with disagreements resolved through discussion. This review identified noticeable few papers over a time when all countries have been trying to address the growing health needs of the older populations. The gap in evidence as to the most effective combinations of retention strategies for home visiting nursing requires urgent attention. Clinical leaders and managers require evidence to inform their strategies for retaining home visiting nurses in order to provide high quality care as more health care systems increase the provision of acute, chronic, and palliative care in patients’ own homes
Wavy wind-water flow impacts on offshore wind turbine foundations
No full textThe present study investigates the flow dynamics surrounding offshore wind turbine OWT foundations, focusing on the interaction of wind and water flows with two prevalent foundation types: mono-pile and tripod designs. Computational simulations and analyses were conducted on the substructures of these OWTs using the ANSYS-Fluent v16.5 software package. The primary objective was to predict critical parameters, including directional drag force coefficients, interface velocities, and pressure distributions. To model realistic oceanic conditions, pseudo-periodic wave patterns were implemented at the inlet boundary. The flow regime was characterized by logarithmic vertical velocity profiles at low interfacial velocities, ranging from 2.23 m/s to 3.01 m/s. This computational approach revealed anisotropic constraints imposed on the foundations under unidirectional flow conditions. The drag coefficients obtained from the simulations highlighted significant vertical flux exchanges in proximity to the OWT structures, with a particularly pronounced downward flow near the tripod foundation design. Additionally, the study demonstrated that variations in wind speed within the specified range did not substantially impact pressure distributions or strain rates. However, these changes were found to influence skin friction coefficients, indicating a sensitivity of these hydrodynamic parameters to wind speed variations. The analysis of flow streamlines around the mono-pile foundation showed a smooth and well-defined pattern, whereas the flow around the tripod foundation exhibited more complex, interleaved, and turbulent streamlines. This distinction in flow behavior is believed to contribute to the observed downward vertical flux exchanges near the tripod
Introducing SPARK : a pilot study of a sport-specific, pragmatic, and athlete-centred values-based anti-doping education workshop
No full textStudy on surrounding rock thermal physical properties on thermal comfort in a ventilated underground refuge chamber
No full textSystemic creative problem-solving : on the poverty of ideas and the generative power of prototyping
Get PDFThis paper argues against the prevailing cognitivist view of creativity, proposing instead a systemic approach, and illustrate how from such a systemic perspective, creative problem-solving can be investigated under laboratory conditions. A cognitivist approach explains creativity from an ideation ground zero and assumes a diffusion model of ideas. In such a model, the explanandum is an initial idea, formed at a given moment in time, a position that implicitly promotes creative exceptionalism (to explain so-called Big-C creativity compared to little-c creativity) and the concomitant quest to discover the equally exceptional neural substate that ‘explains’ it. Borrowing from science and technology studies, this essay proposes instead a translation model of ideas that proceeds on the basis of interactivity and prototyping. In this model, the explanandum is the resulting dialogue between people and prototypes (treated symmetrically as actants in a system of creation). It outlines a methodology that emphasises the co-determination of ideation and the material enactment of ideas in generating creative solutions, illustrated by a study of insight problem-solving. This approach shifts the focus from exceptional cognitive abilities to the material and interactive processes that underpin creative problem-solving
The crisis of care : a curated discussion
No full textCaregiving and career have been primarily studied by management scholars for their incompatibility. Largely ignored have been the consequences of this approach for the lives of workers. Yet the need for both childcare and eldercare is on the rise, women are increasingly integrated into the workforce, and, for many, retirement is being delayed. Particularly in the United States, workers and their families are experiencing a crisis of care. In this curated piece, we identify—and aim to dismantle—four myths that have allowed management research and practice to segment care and work. Contributors bring economics, feminist theory, sociology, organizational behavior, and careers perspectives to provide a broader vision both of the problem and of how management research might advance toward theoretical and practical solutions