1,721,665 research outputs found

    Taylor, Stuart Leonard, TX8442

    No full text
    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/420708Surname: TAYLOR. Given Name(s) or Initials: STUART LEONARD. Military Service Number or Last Known Location: TX8442. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 47067.245418 Item: [2016.0049.52969] "Taylor, Stuart Leonard, TX8442

    Modelling microelectrode and microbiosensor responses through computer simulation

    No full text
    The work in this thesis has involved the modelling of inlaid and recessed microdisc electrode systems through numerical simulation. Transient responses are modelled using the finite element method for the mass transport limited situation. The chronoamperometric response is better than 1% accurate for the inlaid microdisc. The chronoamperometric response for the recessed microdisc is validated in the steady state region and expressions are developed to describe the diffusion limited behaviour.The catalytic EC' behaviour has been invstigated through simulation for the inlaid and recessed microdisc electrodes. Expressions have been developed to describe the steady state current behaviour for any pseudo first order EC' rate constant and for shallow recess depths.The homogeneous enzyme system of a glucose biosensor (FcCOOH / GOx / Glucose system) has been studied experimentally and through simulation for the chronoamperometric response at inlaid microdisc electrodes. The effect of rate constants, mediator and substrate concentrations and microdisc radii size have been studied. Further insight into the behaviour of the systems has been gained through a detailed analysis for the concentration and reaction profiles. A theoretical treatment is presented for the steady state current at an inlaid microdisc over a range of substrate concentrations for the mediator / enzyme / substrate system. An initial case diagram study has been carried out for the inlaid microdisc under saturating substrate kinetics. Limitations in solving the non-linear kinetics at microelectrode geometries are also discussed.The homogeneous enzyme system has also been studied using a recessed microdisc electrode. The benefits of this electrode geometry are discussed.Initial studies into the dissolution of mediator from a commercially available MediSense glucose electrode is described.</p

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Full text link
    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

    Full text link
    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

    Full text link
    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

    Full text link
    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods
    corecore