279,903 research outputs found

    Injecting equipment schemes for injecting drug users : qualitative evidence review

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    This review of the qualitative literature about needle and syringe programmes (NSPs) for injecting drug users (IDUs) complements the review of effectiveness and cost-effectiveness. It aims to provide a more situated narrative perspective on the overall guidance questions

    Continuous Improvement Through Knowledge-Guided Analysis in Experience Feedback

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    Continuous improvement in industrial processes is increasingly a key element of competitiveness for industrial systems. The management of experience feedback in this framework is designed to build, analyze and facilitate the knowledge sharing among problem solving practitioners of an organization in order to improve processes and products achievement. During Problem Solving Processes, the intellectual investment of experts is often considerable and the opportunities for expert knowledge exploitation are numerous: decision making, problem solving under uncertainty, and expert configuration. In this paper, our contribution relates to the structuring of a cognitive experience feedback framework, which allows a flexible exploitation of expert knowledge during Problem Solving Processes and a reuse such collected experience. To that purpose, the proposed approach uses the general principles of root cause analysis for identifying the root causes of problems or events, the conceptual graphs formalism for the semantic conceptualization of the domain vocabulary and the Transferable Belief Model for the fusion of information from different sources. The underlying formal reasoning mechanisms (logic-based semantics) in conceptual graphs enable intelligent information retrieval for the effective exploitation of lessons learned from past projects. An example will illustrate the application of the proposed approach of experience feedback processes formalization in the transport industry sector

    Joint estimation of multiple related biological networks

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    Graphical models are widely used to make inferences concerning interplay in multivariate systems. In many applications, data are collected from multiple related but nonidentical units whose underlying networks may differ but are likely to share features. Here we present a hierarchical Bayesian formulation for joint estimation of multiple networks in this nonidentically distributed setting. The approach is general: given a suitable class of graphical models, it uses an exchangeability assumption on networks to provide a corresponding joint formulation. Motivated by emerging experimental designs in molecular biology, we focus on time-course data with interventions, using dynamic Bayesian networks as the graphical models. We introduce a computationally efficient, deterministic algorithm for exact joint inference in this setting. We provide an upper bound on the gains that joint estimation offers relative to separate estimation for each network and empirical results that support and extend the theory, including an extensive simulation study and an application to proteomic data from human cancer cell lines. Finally, we describe approximations that are still more computationally efficient than the exact algorithm and that also demonstrate good empirical performance.Comment: Published in at http://dx.doi.org/10.1214/14-AOAS761 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

    The Value of Learning Groups to the 1st Year Undergraduate Experience for Students of Early Childhood.

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    Learning networks, groups or communities are seen as having the potential to provide supportive, integrative and deep learning processes which can enhance student performance and support transition to university (Peat, Dalziel and Grant 2001; Zhao and Kuh 2004). The provision of a learning environment with opportunities for meaningful academic and social interactions is characteristic of higher education and collaborative learning strategies are frequently used to encourage student selfmanagement, independence and the general development of group skills. Whilst the value-added potential of learning groups is well documented (Peat et al. 2001; Zhao and Kuh 2004; Lizzio and Wilson, 2006), the nature of the course subject is rarely considered as potentially significant to the effectiveness of the group process; the emphasis in research studies being more frequently concerned with generic academic or pastoral functions. The Early Childhood degree at the University of Worcester established learning groups in 2002 as a specific learning and teaching strategy aligning the pedagogic and andragogic philosophy of the subject to promote academic and professional characteristics required as transferable skills for work in the sector. The social constructivist philosophy underpinning the subject and practice of early childhood provided the common, connecting thread for learning groups to have relevance and meaning for personal, academic and professional development. This study investigated the experience and perceived value of learning groups for the first cohort in 2002/3 through a questionnaire, and by interviews focussed more openly on their general first year experience with a sample group of year 1 students in 2008. The findings revealed an overall highly positive perception indicating that learning groups had scope and value as a forum for:- • Building strong relationships and social identity • Co-construction of a learning culture • Reciprocal learning and skill development • Empowerment of adult learners and development of confidence • Enhancing professional development The most useful transferable skills and knowledge gained during the first year came from sharing ideas and relationship building in small group work which gave the students confidence. The findings demonstrate that peer learning groups provide mutual support and learning opportunities which develop skill in working with others which, in turn, students regard as the predominant quality required for their future professional lives

    Measuring Infringement of Intellectual Property Rights

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    © Crown Copyright 2014. You may re-use this information (excluding logos) free of charge in any format or medium, under the terms of the Open Government Licence. To view this licence, visit http://www.nationalarchives.gov. uk/doc/open-government-licence/ Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concernedThe review is wide-ranging in scope and overall our findings evidence a lack of appreciation among those producing research for the high-level principles of measurement and assessment of scale. To date, the approaches adopted by industry seem more designed for internal consumption and are usually contingent on particular technologies and/or sector perspectives. Typically, there is a lack of transparency in the methodologies and data used to form the basis of claims, making much of this an unreliable basis for policy formulation. The research approaches we found are characterised by a number of features that can be summarised as a preference for reactive approaches that look to establish snapshots of an important issue at the time of investigation. Most studies are ad hoc in nature and on the whole we found a lack of sustained longitudinal approaches that would develop the appreciation of change. Typically the studies are designed to address specific hypotheses that might serve to support the position of the particular commissioning body. To help bring some structure to this area, we propose a framework for the assessment of the volume of infringement in each different area. The underlying aim is to draw out a common approach wherever possible in each area, rather than being drawn initially to the differences in each field. We advocate on-going survey tracking of the attitudes, perceptions and, where practical, behaviours of both perpetrators and claimants in IP infringement. Clearly, the nature of perpetrators, claimants and enforcement differs within each IPR but in our view the assessment for each IPR should include all of these elements. It is important to clarify that the key element of the survey structure is the adoption of a survey sampling methodology and smaller volumes of representative participation. Once selection is given the appropriate priority, a traditional offline survey will have a part to play, but as the opportunity arises, new technological methodologies, particularly for the voluntary monitoring of online behaviour, can add additional detail to the overall assessment of the scale of activity. This framework can be applied within each of the IP right sectors: copyright, trademarks,patents, and design rights. It may well be that the costs involved with this common approach could be mitigated by a syndicated approach to the survey elements. Indeed, a syndicated approach has a number of advantages in addition to cost. It could be designed to reduce any tendency either to hide inappropriate/illegal activity or alternatively exaggerate its volume to fit with the theme of the survey. It also has the scope to allow for monthly assessments of attitudes rather than being vulnerable to unmeasured seasonal impacts

    Discussing the Importance of Ontology and Epistemology Awareness in Practitioner Research.

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    This paper uses the focus of identity and acculturation within schools as the basis for a reflection on the ways in which researchers ground their investigations. It identifies the necessity for researchers to ensure that their own ontological perceptions, epistemological stances and methods for data gathering and interpretation are closely aligned. By investigating the ways in which a diversity of methodological approaches are used to address the issue of identity formation, as reflected in three school-based studies (Houlette et al, 2004; illbourn, 2006; Nasir et al, 2009), the paper facilitates a teasing out of ontological and epistemological issues. The practical implications are that, through a deeper awareness of the ontological substructures informing their studies, researchers will be more clearly positioned to iteratively reflect upon, and define how best to engage with, their research projects
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