2,378 research outputs found

    The action of citric acid and its salts in sugar solutions

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    Evaluation of outreach interventions for under 16 year olds. Tools and guidance for higher education providers

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    During 2017-18, OFFA commissioned research that aimed to understand the nature of outreach activities for under 16 year olds (which were funded through access and participation investment) and how these were evaluated. This document, developed from the research, is intended to act as a resource for pre-16 outreach practitioners and evaluators, drawing both on the data collected by this project and the wider literature around evaluation and outreach. It seeks to recognise the complexity of pre-16 outreach work and eschews a prescriptive approach in favour of establishing important principles and actions that are likely to underpin good practice. Our discussion is broadly positioned within a ‘social realist’ worldview (Archer, 2008; Pawson, 2013) that seeks to understand the fuzzy nature of the cause-and-effect relationships that exist within complex social fields, where individuals construct their own realities in reference to those around them. There is a particular focus on epistemology – the pathways to creating dependable, if contingent, knowledge – as a vehicle for making meaning from data that is usually incomplete, compromised or mediated through young people’s emergent constructions of their worlds. Fundamentally, outreach is predicated on the ability of practitioners to influence young people in a planned way, albeit that the plan will not always work for every young person in every cohort. An important element in this epistemology is that it is not concerned with finding single ‘solutions’ that exist outside time and context. Rather, it is concerned with understanding how young people are influenced by their life experiences – not ‘what works’, but what works in a given context and, importantly, why. It is only through understanding the latter element that practices can become robustly effective in the long-term and potentially transferable to other contexts. This is particularly appropriate to pre-16 outreach work due to the lengthy time lag between activity and application to higher education (HE).Office for Students (OfS

    Understanding the evaluation of access and participation outreach interventions for under 16 year olds

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    The project team was asked to address the following six research questions and these were used to guide the project: 1. What are the intended outcomes for current outreach interventions directed at under 16 year olds from disadvantaged backgrounds where the long-term aim is to widen access to higher education (HE)? 2. What types of outreach intervention activity or activities are institutions using in relation to intended outcomes? 3. What evaluation tools, methods and metrics are being used to measure the intended outcomes? 4. What are the perceived and actual challenges and barriers for different stakeholders to effective evaluation of long-term outreach? 5. What do different stakeholders consider most effective evaluation practice and why? 6. How valid and suitable are the evaluation tools, methods and metrics (identified through the research) that are commonly used? The project was constructed around six interlinked work packages: 1. A quantitative analysis of what higher education providers (HEPs) say about their pre-16 outreach activities (and their evaluation) in their 2017-18 access agreements (as the most recent available). 2. An online survey of HEPs to gather information about the pre-16 outreach activities delivered during the 2016-17 academic year and their evaluation, as well as the structure of their evaluation resources and challenges faced. 3. Case studies of four HEPs identified as demonstrating elements of good practice through their access agreements and the online survey, derived from telephone interviews with key staff and documentary analysis. 4. Telephone interviews with 11 third sector organisations (TSOs) to explore their practices and the evaluation of their activities, providing a counterpoint to the data collected from higher education institutions (HEIs). 5. A synthesis of the four preceding work packages to explore elements of good practice, determine a basis for assessing the quality of evaluations and highlight challenges for the sector and OFFA. 6. An invited participatory workshop for evaluators from HEPs and TSOs identified as demonstrating elements of good practice through the online survey and telephone interviews, to act as a sounding board for the emerging conclusions and recommendations.Office for Students (OfS

    Draft genome sequence of the Streptococcus pneumoniae Avery strain A66

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    We have used HiSeq 2000 technology to generate a draft genome sequence of Streptococcus pneumoniae strain A66. This is a common study strain used in investigations of pneumococcal bacterium-host interactions and was used in the seminal genetic studies of Avery et al

    Gender and authority in British women hymn-writers' use of metre, 1760-1900

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    This article is part of a cluster that draws material from the recent conference Metre Matters: New Approaches to Prosody, 1780–1914. It comprises an introduction by Jason David Hall and six articles presented at the conference, whose aim was to address renewed scholarly interest in versification and form across the long nineteenth century, as well as some of the methodologies underpinning it. The papers included in the cluster look both to the minutiae of Romantic and Victorian metres and to their cultural intertexts. The conference, hosted by the University of Exeter's Centre for Victorian Studies, was held 3–5 July 2008

    Improving the understanding of SPAD risks using red aspect approach data

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    This paper describes a novel technique for estimating the frequency with which trains approach signals showing a red aspect. This knowledge is potentially important for understanding the likelihood of a signal being passed at danger (SPAD) at individual signals and also for normalisation of SPAD data, both locally and nationally, for trending and benchmarking. The industry currently uses estimates for the number of red aspect approaches based on driver surveys, which are considered to have significant shortcomings. Data for this analysis is sourced from publicly available live feeds provided by Network Rail which give information on train movements and signal states. The development of the analysis model is described and a case study presented. The case proves that there are large variations in the red approach rates between individual signals. SPAD risk assessment at individual signals may be significantly enhanced by the ability to estimate red approach rates for individual signals using the techniques describe

    SB78-16/17: Resolution Proposing Recycling Oversight Board

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    SB78-16/17: Resolution Proposing Recycling Oversight Board. This resolution passed 23Y-1N-0A by roll call vote at the April 19, 2017 meeting of the Associated Students of the University of Montana (ASUM)

    CMOS programmable analog memory-cell array using floating-gate circuits

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    Journal ArticleThe complexity of analog VLSI systems is often limited by the number of pins on a chip rather than by the die area. Currently, many analog parameters and biases are stored off-chip. Moving parameter storage on-chip could save pins and allow us to create complex programmable analog systems. In this paper, we present a design for an on-chip nonvolatile analog memory cell that can be configured in addressable arrays and programmed easily. We use floating-gate MOS transistors to store charge, and we use the processes of tunneling and hot-electron injection to program values. We have fabricated two versions of this design: one with an nFET injection mechanism and one with a pFET injection mechanism. With these designs, we achieve greater than 13-bit output precision with a 39-dB power-supply rejection ratio and no crosstalk between memory cells
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