1,488 research outputs found

    Towards an Info-Symbiotic Decision Support System for Disaster Risk Management

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    This paper outlines a framework for an info-symbiotic modelling system using cyber-physical sensors to assist in decision-making. Using a dynamic data-driven simulation approach, this system can help with the identification of target areas and resource allocation in emergency situations. Using different natural disasters as exemplars, we will show how cyber-physical sensors can enhance ground level intelligence and aid in the creation of dynamic models to capture the state of human casualties. Using a virtual command & control centre communicating with sensors in the field, up-to-date information of the ground realities can be incorporated in a dynamic feedback loop. Using other information (e.g. Weather models) a complex and rich model can be created. The framework adaptively manages the heterogeneous collection of data resources and uses agent-based models to create what-if scenarios in order to determine the best course of action

    Mining Explainable Predictive Features for Water Quality Management

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    With water quality management processes, identifying and interpreting relationships between features, such as location and weather variable tuples, and water quality variables, such as levels of bacteria, is key to gaining insights and identifying areas where interventions should be made. There is a need for a search process to identify the locations and types of phenomena that are influencing water quality and a need to explain how the quality is being affected and which factors are most relevant. This paper addresses both of these issues. A process is developed for collecting data for features that represent a variety of variables over a spatial region and which are used for training models and inference. An analysis of the performance of the features is undertaken using the models and Shapley values. Shapley values originated in cooperative game theory and can be used to aid in the interpretation of machine learning results. Evaluations are performed using several machine learning algorithms and water quality data from the Dublin Grand Canal basin

    Protocol assessment issues in low duty cycle sensor networks: The switching energy

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    Energy assessment of MAC protocols for wireless sensor networks is generally based on the times of transmit, receive and sleep modes. The switching energy between two consecutive states is generally considered negligible with respect to them. Although such an assumption is valid for traditional wireless ad hoc networks, is this assumption valid also for low duty cycle wireless sensor networks? The primary objective of this work is to shed some light on relationships between node switching energy and node duty cycle over the total energy consumption. In order to achieve the target, initially, we revisit the energy spent in each state and transitions of three widespread hardware platforms for wireless sensor networks by direct measurements on the EYES node. Successively, we apply the values obtained to the SMAC protocol by using the OmNet++ simulator

    The extreme 2013/2014 winter storms: Beach recovery along the southwest coast of England

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    publisher: Elsevier articletitle: The extreme 2013/2014 winter storms: Beach recovery along the southwest coast of England journaltitle: Marine Geology articlelink: http://dx.doi.org/10.1016/j.margeo.2016.10.011 content_type: article copyright: Ā© 2016 The Authors. Published by Elsevier B.V

    Antibiotic pharmacoeconomics: an attempt to find the real cost of hospital antibiotic prescribing.

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    Antibiotics account for a large part of all hospital pharmacy budgets, but the actual cost of their prescription is unknown. These costs include intravenous administration, labour, serum antibiotic assay, monitoring of haematological and biochemical indices, disposal of sharps and adverse effects. An in-house method of costing antibiotic therapy is presented, to quantify these hidden expenses. Since not only an awareness, but an accurate quantification, of hidden costs is required, a study of various hospital procedures relating directly to antibiotic therapy was undertaken in an acute medical ward; this involved the identification of particular staff members performing various procedures, consumables used and time taken. The cost of five-day courses of gentamicin, penicillin G, ampicillin, flucloxacillin, cefuroxime, ceftotaxime and erythromycin has been calculated; drug and hidden costs for each are presented graphically for comparison. The breakdown cost for gentamicin is presented to illustrate the method. The costing of adverse effects has not been attempted. We suggest that costings of this sort are used in cost-benefit analysis of antibiotic use. These calculations have been incorporated into a computer spreadsheet and this costing service will be offered to clinical areas of our hospital

    The politics of coproduction during Latin Americaā€™s ā€˜Pink Tideā€™: Water, housing, and waste in comparative perspective

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    Coproduction brings together a diverse range of state and non-state actors to create and deliver public services. These processes, which occur across the Global South, have been widely studied. However, insufficient critical attention has been paid to their politics. We address this gap in the literature by analysing the politics of coproduction in Latin America during the ā€˜pink tideā€™ of the early twenty-first century. Drawing on original qualitative research, this article explores the coproduction of three distinct public servicesā€”water, housing, and wasteā€”in three countries where left-leaning presidents and governments were elected into officeā€”Ecuador, Bolivia, and Uruguay. We argue that coproduction is intrinsically political in these three cases; that is, the ā€˜politicalā€™ is internal to, and inherent in, coproduction. Our comparative analysis centres on two political dimensionsā€”subject-making and collective autonomyā€”and shows that tensions around these two issues were central to coproduction in Ecuador, Bolivia, and Uruguay . The article demonstrates the importance of not treating politics as a mere contextual concern in coproduction analysis and shows that coproduction has the capacity to reshape political relationships and subjectivities. Taking politics into account is essential to understanding the dynamics and potential of coproduction in the Global South. Our comparative analysis also provides new insights into Latin American politics, especially concerning 'pink tide' governments and the provisioning of public services

    K-Space at TRECVID 2008

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    In this paper we describe K-Spaceā€™s participation in TRECVid 2008 in the interactive search task. For 2008 the K-Space group performed one of the largest interactive video information retrieval experiments conducted in a laboratory setting. We had three institutions participating in a multi-site multi-system experiment. In total 36 users participated, 12 each from Dublin City University (DCU, Ireland), University of Glasgow (GU, Scotland) and Centrum Wiskunde and Informatica (CWI, the Netherlands). Three user interfaces were developed, two from DCU which were also used in 2007 as well as an interface from GU. All interfaces leveraged the same search service. Using a latin squares arrangement, each user conducted 12 topics, leading in total to 6 runs per site, 18 in total. We officially submitted for evaluation 3 of these runs to NIST with an additional expert run using a 4th system. Our submitted runs performed around the median. In this paper we will present an overview of the search system utilized, the experimental setup and a preliminary analysis of our results
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