1,720,984 research outputs found

    Durable Eucalypts on Drylands: Protecting and Enhancing Value

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    The workshop “Durable Eucalypts on Drylands: Protecting and Enhancing Value” was held on the 19 April 2017 at the Marlborough Research Centre in Blenheim. On the 20 April 2017 a field visit followed to one of the NZ Dryland Forests Initiative’s (NZDFI) breeding trials, located on land owned by the Marlborough District Council near Blenheim, and then to Nelson Pine Industries Ltd’s LVL processing plant in Richmond, Nelson. The main aims of the workshop were (i) to inform our supporters and the wider public of the recent progress in establishing a forest industry based on durable eucalypts and (ii) to enable international experts to review our research programme. While the challenges associated with growing and processing durable eucalypts are general, those organising this workshop have a specific interest in addressing local issues and uncertainties. The workshop attracted participants spanning a broad range of nationalities, interests and expertise, and we gained valuable feedback on the NZDFI research programme. The workshop enabled NZDFI to strengthen and expand domestic and international collaborations. Contents: Shaf van Ballekom & Paul Millen. NZDFI: achievements, constraints and opportunities. Serajis Salekin, Justin Morgenroth & Euan Mason. Site characterisation and growth modelling for durable eucalypts: a case study in Marlborough, New Zealand. Tim Wardlaw. Managing the health of plantation eucalypts in Tasmania. Tara Murray & Huimin Lin. Managing insect pest risks for durable eucalypts in New Zealand: optimised monitoring and selection for tolerance. Monika Sharma & Clemens Altaner. New Zealand grown eucalypts for rotary peeled veneer production. Jeffrey Morrell & Shalinney Lipeh. Non-destructive assessment of natural durability: a U.S. perspective. Laurie Cookson. Determining the natural durability of eucalypts in Australia. Yanjie Li & Clemens Altaner. Improving heartwood quality of durable eucalypts. Paul Schroeder Propagation of eucalypts. David Leung. Tissue culture of eucalypts: micropropagation of Eucalyptus bosistoana. Tomo Kakitani. The global timberlization movement and the potential for durable eucalypts: downstream opportunities

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    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

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    “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

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    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

    Poly(lactide acid) Composites Reinforced with Fibers Obtained from Different Tissue Types of Picea sitchensis

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    Wood fibers vary in their properties across species, across trees of the same species, and within single trees. This work takes advantage of wood fibers reinforcing poly(lactic acid) composites that originate from different tissue types of the species Sitka spruce (Picea sitchensis). Fibers were prepared with high temperature thermo-mechanical processing (TMP) from juvenile, mature, and compression wood tissues of Sitka spruce. Composites were made by solution casting with subsequent hot-pressing. Thermal as well as mechanical properties were determined using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and tensile testing. The obtained results showed that the chemical and physical properties of different tissue-type Sitka spruce fibers have significant effects on the thermal and mechanical properties of the Polylactic acid (PLA)/Sitka fiber composites. To increase interfacial compatibility between the hydrophilic fibers and the hydrophobic polymer matrix, the fibers were treated with vinyltrimethoxysilane (VTMO), while PLA was modified with 4,4-methylene diphenyl diisocyanate (MDI). It was found that PLA/Sitka composites treated with VTMO and MDI exhibited improved thermal and mechanical properties, compared to the unmodified control. The work also demonstrates that there is potential to improve biobased composites by utilizing the natural variability of wood fibers. J Appl Polym Sci 114: 2616-2623, 2009

    Dispelling the Myths Behind First-author Citation Counts

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    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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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