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Mcleod, M J, 12189
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.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/404028Surname: MCLEOD. Given Name(s) or Initials: M J. Military Service Number or Last Known Location: 12189. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 54882.240139
Item: [2016.0049.36320] "Mcleod, M J, 12189
ドイツ史学の伝統と課題
Get PDF研究課題/領域番号:X41440-----12189, 研究期間(年度):1966出典：研究課題「ドイツ史学の伝統と課題」課題番号X41440-----12189
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-X41440-----12189/）を加工して作成金沢大学法文学部research repor
ISO 12189 standard for the preclinical evaluation of posterior spinal stabilization devices - I: Assembly procedure and validation
No full textThe International Standardization Organization introduced standard 12189 for the preclinical evaluation of the mechanical
reliability of posterior stabilization devices. The well-known vertebrectomy model formalized in standard F1717 by
the American Society for Testing and Materials was modified with the introduction of a modular anterior support made
up of three calibrated springs, which allows to describe a more realistic scenario, closer to the effective clinical use, as
well to test even very flexible and dynamic posterior stabilization implants. Despite these important improvements, ISO
12189 received very little attention in the literature. The aim of the work is to provide a systematic procedure for the
assembly and validation of a finite element model capable of describing the experimental test according to ISO 12189.
The validated finite element model is able to catch very well the effective stiffness of the unassembled and assembled
constructs (percentage differences \2% and \10%, respectively). As concern the assembled construct, the experimentally
measured and predicted strains were found in a good agreement (R2 . 0.75, root mean square error \ 30%),
but the procedure without precompression lead to much better results (R2 . 0.96, root mean square error \ 10%).
Given the prediction errors of the assembled construct fall within the experimental range of repeatability, the finite element
model can be systematically implemented to support the mechanical design of a variety of spinal implants, to quantitatively
investigate the load-sharing mechanism, as well as to investigate the loading conditions set by ISO 12189
standard
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
ISO 12189 standard for the preclinical evaluation of posterior spinal stabilization devices - II: A parametric comparative study
No full textThe International Standardization Organization (ISO) 12189 standard was recently introduced to preclinically evaluate
and compare the mechanical properties of posterior stabilization devices. This scenario presents some new significant
steps ahead over the vertebrectomy model recommended by American Society for Testing and Materials
(ASTM) F1717 standard: the modular anterior support allows for describing a closer scenario to the effective clinical
use as well as to test very flexible and dynamic posterior stabilization devices. Despite these significant advantages,
ISO 12189 received little attention in the literature. Anatomical parameters depending on the spinal level were compared
to the published data or original measurements on biplanar stereoradiography on 13 patients. Other mechanical
variables, describing the test set-up design, were considered and all parameters were investigated using a
numerical parametric finite element model. Stress values were calculated by also considering their worst-case combination.
The standard set-up represents quite well the anatomy of an instrumented average thoracolumbar segment.
The parametric comparative analysis demonstrates a significant (even beyond +350%) maximum increase in the
stress on the device, compared to the standard currently in use. The anterior support stiffness plays the most detrimental
effect (maximum stress increases up to 396%). The initial precompression step has an important role in
determining the final stress values achieved at peak load (up to +76%). Moreover, when combining these two contributions,
an even higher stress increase may be achieved (up to 473%). Despite the other anatomical parameters
playing a secondary role, their worst-case combination demonstrates that a device could potentially undergo higher
stresses than those reached according to standard suggestions (maximum increase of 22.4% at L1). Any user/
designer should be aware of these effects when using ISO 12189 standard for the preclinical evaluation of posterior
spinal stabilization devices
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