1,721,128 research outputs found
US-PROPS: Regional Application to Great Smoky Mountains National Park (McDonnell et al. 2022)
No full textThis dataset is the data and metadata associated with the application of the US-PROPS model to the Great Smoky Mountains National Park (GSMNP). It is a geodatabase of species and vegetation classes across the GSMNP and describes the distribution of species, critical loads of different vegetation classes, and the changes in the occurrence probabilities for different scenarios explored. Users should start with the "Dataset_Descriptions.docx" file, and read McDonnell et al. (2022) for context (https://www.sciencedirect.com/science/article/pii/S2666765722001065). McDonnell, T.C., Clark, C.M., Reinds, G.J., Sullivan, T.J. and Knees, B., 2022. Modeled vegetation community trajectories: Effects from climate change, atmospheric nitrogen deposition, and soil acidification recovery. Environmental Advances, p.100271
SMART users guides: SMART_NL & SMS_NL
No full textInstructions to install and to use the model SMART_NL are given, and how to use the model SMART_NL with SUMO included. Besides, a user manual for configuration management is given
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Air pollution impacts on European forest soils: steady-state and dynamic modelling
No full textZure regen heeft in Europa geleid tot verzuring van bodems en oppervlaktewater. In bosbodems nam de buffercapaciteit af en de bossen werden gevoeliger voor stress als gevolg van, bijvoorbeeld, verstoorde nutriëntenbalansen veroorzaakt door een teveel aan stikstof in de bodem. Deze overmaat aan stikstof veroorzaakte ook veranderingen in natuurlijke vegetaties (meer stikstofminnende soorten). In oppervlaktewater zijn duidelijke schadelijke effecten waargenomen als gevolg van verzuring: in de jaren 70 en 80 trad, vooral in Scandinavië, grote sterfte op onder gevoelige vissoorten. Overmaat aan stiktof leidde lokaal tot eutrofiëring van oppervlaktewater. Kritische depositieniveaus worden meestal berekend met een computermodel dat de bodemverzuring simuleert. Er zijn vele bodemverzuringsmodellen ontwikkeld, maar de meeste daarvan zijn alleen toegepast op puntlocaties en/of regio’s en bovendien zijn de modellen zelden gecalibreerd op grote, regionale datasets. Het doel van dit proefschrift was om (a) na te gaan of beschikbare gegevens uit Europese bosmonitoringsprogramma’s kunnen worden gebruikt om een eenvoudig bodemverzuringsmodel te calibreren (b) op basis van de calibratie na te gaan hoe onzeker de modeluitkomsten zijn en of deze onzekerheid door modelcalibratie afneemt (c) het model toe te passen op Europa en Noord Azië en (d) vast te stellen of de afname van zure depositie leidt to herstel van bodemverzuring in Europa en na te gaan of klimaatverandering daar een invloed op heef
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 linkWe 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
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