1,721,124 research outputs found
Kirchenrechtliche Vorgaben zur Katechese und deren Umsetzung in der Kirche von Vietnam
No full textvorgelegt von Van Tri DoanDiplomarbeit Universität Innsbruck 202
Kirchenrechtliche Vorgaben zur Katechese und deren Umsetzung in der Kirche von Vietnam
No full textvorgelegt von Van Tri DoanDiplomarbeit Universität Innsbruck 202
Kirchenrechtliche Vorgaben zur Katechese und deren Umsetzung in der Kirche von Vietnam
No full textvorgelegt von Van Tri DoanDiplomarbeit Universität Innsbruck 202
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
Hydraulic modelling and flood inundation mapping in a bedrock-confined anabranching network: the Mekong River in the Siphandone Wetlands, Laos
No full textAnabranching fluvial networks recently have become the focus of attention fromenvironmental specialists, especially in the hydraulic field. Anabranching networks can befound in different physical environments; however, the hydraulic and geomorphologicalnatures of such river networks are still not well known leading to on-going discussions on thedefinition and nature of the networks. Even though, alluvial anabranching networks generallyhave common features like vegetated islands, low water surface slope and stable channelplanform, bedrock-confined anabranching networks also have their own characteristicsinherited from the geological and structural controls imposed on the single channels thatcompose the network complex.This thesis focuses on the provision of a benchmark describing the bulk hydrauliccharacteristics of a large bedrock-confined, anabranching river network, located withinsouthern Laos. The network can be separated into: (i) the upper river network constituted bytwo bifurcations and one confluence with an interpolated bathymetry based on soundings ofcross-sections along the navigation channels; and, (ii) the downstream river networkcharacterised by a complex anabranching network with five bifurcations and five confluencesfor which there is no bathymetric survey.The river network as whole is a ‘composite’ – partly bedrock (especially the channel-bed)and partly alluvial-filled and as such it does not accord fully with any prior description orclassification of anabranching channel networks (e.g. Huang and Nanson, 1996). Tounderstand the hydraulic nature of the river network, the energy approach in a onedimensional(1D) steady-flow hydraulic model (HEC-RAS) was applied to the network.Significant challenges arose due to the lack of boundary conditions throughout the model,namely: (i) unknown splitting discharge ratios at each bifurcation; (ii) partly non-surveybathymetry; and, (iii) ungauged downstream boundary condition of one of the channeloutlets. To determine the discharge entering each channel, the splitting discharge ratio at eachbifurcation was defined originally by the ratio of the cross-sectional area of the first crosssectionof each downstream channel and then adjusted based on the Flow Optimizationfunction in HEC-RAS to minimize any rise or drop of the modelled water surface around ajunction. For the channels with non-surveyed bathymetry, a SPOT satellite image wasprocessed to construct a pseudo-bathymetry showing a range of elevations, including shallowand deep portions of channels, rather than detailed bed elevations as would be obtained froma measured bathymetry. To define the boundary condition of the ungauged channel outlet, thewater surface elevation was interpolated and validated according to predefined assumptions(i.e. the water surface slope along the ungauged channel was interpolated according to theavailable DEM and cross-sectional width extracted from a SPOT image for low dischargeconditions was assumed to be similar to the gauged channels for flooding discharges).In general, the study has helped to develop methods to model the complex river network withdata constraints (i.e. the boundary conditions). The findings include: (i) the developedpseudo-bathymetry based on a SPOT image is useful to model a large river network using theenergy approach in a 1D hydraulic model in which the cross-sectional area is important inmodelling the bulk hydraulic parameters but the influence of the cross-sectional shape issubordinate; (ii) the in-channel hydraulic roughness coefficient at each cross-section may besignificantly different from neighbouring values due to the variation in the local bedrockroughness and the roughness of intervening alluvial reaches; and, (iii) the hydraulicroughness of the riparian land cover along the floodplains does not contribute noticeably tothe modelled stage along the river network nor to the planform extent of flooding foroverbank flooding discharges. Rather, changes in land-cover, and hence the riparianroughness, are registered as small, but measureable, changes in the local velocity over theriparian floodplain and in the average in-channel velocity.Citations:Van, P.D.T., 2009. Hydraulic modelling and flood inundation mapping in a bedrockconfinedanabranching network: The Mekong River in the Siphandone wetlands, Laos.Unpublished PhD thesis submitted to the Faculty of Engineering, Science and Mathematics,University of Southampton, England
A new endemic species of Cyrtodactylus Gray (Squamata: Gekkonidae) from Tho Chu Island, southwestern Vietnam.
No full textNgo, Van Tri, Grismer, Lee (2012): A new endemic species of Cyrtodactylus Gray (Squamata: Gekkonidae) from Tho Chu Island, southwestern Vietnam. Zootaxa 3228: 48-60, DOI: 10.5281/zenodo.21031
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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