15,405 research outputs found

    Life Beyond the Mailbox: A Cross-Tool Perspective on Personal Information Management

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    Email interfaces provide poor support for the personal information management (PIM) activities that users have adopted them for. This paper reports a user study that highlights how two aspects of PIM, information management and task management, cut across a range of tools, including email. We argue that effective support for such cross-tool activities cannot be provided through a focus on one interface such as email alone. Instead, a cross-tool approach is needed in PIM-related research and design. We present a prototype aimed at improving cross-tool support for information management, and report the results from an initial evaluation

    Domestic open market operations during 2000

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    Open market operations ; Monetary policy ; Federal Open Market Committee

    Help-seeking in emerging adults with and without a history of mental health referral: a qualitative study.

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    BACKGROUND: Young people are generally reluctant to seek professional help when experiencing problems. However, past experience of services is often cited as increasing the intention to seek help, therefore those with a history of mental health referral may adopt more adaptive help seeking strategies. The current study investigated whether the pattern of different help seeking strategies and barriers to help seeking differed as a function of previous referral history. METHODS: Semi-structured interviews were conducted with 29 emerging adults (12 males, 17 females); 17 with a history of mental health referral and 12 without and analysed using thematic analysis. RESULTS: Overall, those with a referral to services were more likely than those without to rely on avoidant coping, especially techniques that depended upon suppression. This could help account for the increased use of strategies involving self-harm and substances in those with past referral. An exploration of barriers to help seeking showed those with a history of mental health referral were much more likely to self-stigmatise and this became attached to their sense of identity. CONCLUSIONS: Emerging adults with a history of referral are more likely to adopt avoidant coping strategies when dealing with problems and self-stigmatise to a greater degree than those without a history of referral. This suggests that current approaches to mental health in emerging adults are not decreasing the sense of stigma with potentially far-reaching consequences for the developing sense of self and choice of help seeking strategies

    Application of intersatellite links to domestic satellite systems

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    The results of a study on intersatellite link (ISL) applications for domestic satellite communications are presented. It was determined if any technical, economic, or performance benefits could be gained by introducing intersatellite links into a domestic satellite communication network. Several key systems issues of domestic ISL's are addressed. These include the effect of a skewed traffic distribution on the selection of ISL satellite orbit locations, tolerable satellite spacing, and crosslink traffic-handling requirements. An ISL technology assessment is made by performing a parametric link analysis for several microwave and optical implementations. The impact of the crosslink on the end-to-end link performance is investigated for both regenerative and nonregenerative ISL architectures. A comparison is made between single satellite systems operating at C-, and Ku-bands and the corresponding ISL systems in terms of ground segment cost, space segment cost, and net link performance. Results indicate that ISL's can effectively expand the CONUS orbital arc, with a 60 GHz ISL implementation being the most attractive

    Analysis of a Helmholtz preconditioning problem motivated by uncertainty quantification

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    This paper analyses the following question: let Aj\mathbf{A}_j, j=1,2,j=1,2, be the Galerkin matrices corresponding to finite-element discretisations of the exterior Dirichlet problem for the heterogeneous Helmholtz equations (Ajuj)+k2njuj=f\nabla\cdot (A_j \nabla u_j) + k^2 n_j u_j= -f. How small must A1A2Lq\|A_1 -A_2\|_{L^q} and n1n2Lq\|{n_1} - {n_2}\|_{L^q} be (in terms of kk-dependence) for GMRES applied to either (A1)1A2(\mathbf{A}_1)^{-1}\mathbf{A}_2 or A2(A1)1\mathbf{A}_2(\mathbf{A}_1)^{-1} to converge in a kk-independent number of iterations for arbitrarily large kk? (In other words, for A1\mathbf{A}_1 to be a good left- or right-preconditioner for A2\mathbf{A}_2?). We prove results answering this question, give theoretical evidence for their sharpness, and give numerical experiments supporting the estimates. Our motivation for tackling this question comes from calculating quantities of interest for the Helmholtz equation with random coefficients AA and nn. Such a calculation may require the solution of many deterministic Helmholtz problems, each with different AA and nn, and the answer to the question above dictates to what extent a previously-calculated inverse of one of the Galerkin matrices can be used as a preconditioner for other Galerkin matrices

    Primary connections in a provincial Queensland school system: relationships to science teaching self-efficacy and practices

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    The teaching of science is important, both to meet the need for future workers in fields requiring scientific capability and to equip students for full participation in modern societies where many decisions depend upon knowledge of science. However, many teachers in Australian primary schools do not allocate science education sufficient amounts of time to achieve these outcomes. This study reports data obtained from 216 teachers in the primary schools in a provincial Australian school system. The purpose of the study was to assess the effects of existing strategies using Primary Connections for promoting science teaching and to inform future professional development strategies. Teachers reported moderate levels of self-efficacy for teaching science and a proportion reported allocating little or no time to teaching science. Both self-efficacy for science teaching and the amount of science taught were higher for teachers who had used Primary Connections curriculum materials

    On The Reporting Of Reliability In Content Analysis

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    This article explores one type of misreporting of reliability that has been seen in recent conference papers and articles using the method of content analysis. The reporting of reliability is central to the validity of claims made using this method. A brief overview of content analysis is offered, followed by the exploration of one type of misreporting of reliability. Suggestions are offered to address the problem

    Social Capital: A review from an ethics perspective

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    In this paper we extend previous reviews of the social capital literature to encompass an ethics perspective. First, we update previous reviews of social capital. Social capital continues to gain currency in both academic and practical circles, despite relatively little critical reflection on the implications of promoting this popular concept. Our work goes some way to rectifying this paucity in understanding what has been termed the ‘dark side’ of social capital. In particular, we review the social capital concept from the perspective of three theories of business ethics: utilitarianism, justice and ethic of care. While the utilitarian perspective closely parallels accounts of social capital’s rationale, the concept’s operation is mirrored very closely by the assumptions underpinning the ethic of care, while the dark side of social capital is commonly given voice in justice-based critiques. We conclude by considering the implications of our analysis
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