1,721,002 research outputs found
Hydrological Extremes
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Floods and drought are the major weather related hydrological disasters and recent events have demonstrated Europe’s continuing exposure to
these natural hazards. 'High and low flows and associated floods and droughts are natural phenomena caused by meteorological anomalies and
modified by the physical characteristics of catchments. The knowledge about the quantity, timing and risk of extreme discharges during floods
and droughts is the basic requirement for a broad range of purposes in hydrology and water resources management. This knowledge has ideally
to be based on the understanding the controls of the genesis of hydrological extremes (like the importance of landscape heterogeneities,
threshold processes, scaling issues), finding appropriate ways how to characterize them (spatial and temporal variability, regional patterns) and
designing reliable methods of predicting.
The main objectives of this session are (a) to foster the understanding of the main governing processes of hydrological extremes, including
spatial and temporal patterns of floods and droughts, (b) to discuss modeling approaches and concepts how to include process understanding in
predictive models, (c) to shed light on the regional characteristics and spatial patterns of floods and droughts and the processes that give rise to
such patterns including climate forcing, extreme precipitation and catchment response, (d) to present methods and practical applications for
estimating and/or predicting floods, droughts and low flows at a regional scale as well as regional methods for making predictions at the local
scale, (e) to address the potential impact of global change, including climate and land use changes, on hydrological extremes, (f) to profit from
the similarity and differences of modeling concepts for both extremes.
Specifically, papers are solicited that address one or more of the following questions:
* what are the important mechanisms producing regional hydrological extremes, and how the use of diverse hydrological methods can contribute
to highlighting the governing processes
* what is the role of climatic forcing and catchment properties in the regional distribution of hydrological extremes,
* which hydro-meteorological and catchment characteristics and indices can be used to describe regional patterns of hydrological extremes,
* how do anthropogenic impacts and different land use patterns affect the spatial patterns of regional hydrological extremes,
* how effective and reliable are the statistical techniques (e.g., cluster analysis, artificial neural networks, copulas, Fourier analysis, etc.) for
identification of watersheds with similar dominant hydrological characteristics.
The scope of the session includes both general methodological contributions and case studies of hydrological extremes in different regions. All
methodological contributions will ideally discuss the benefits of the method for the challenges of hydrological extremes.
Preliminary List of Solicited Speakers
Ross Woods, NIWA, Christchurch, New Zealand
Murugesu Sivapalan, University of Illinois
General Statement
The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session
Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer
cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with
regard to the material publishe
Rtop: An R package for interpolation of data with a variable spatial support, with an example from river networks
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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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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