133,406 research outputs found
Over de cyclus der zogenaamde drempelgeulen in de oostelijke uitloop van de Zimmermangeul
No full textReeds jarenlang vormt het Nauw van Bath in het bovenstroomse deel van de Westerschelde een der moeilijkst te bevaren geulgedeelten van de scheepvaartweg van en naar Antwerpen. Als gevolg van het verrichten van omvangrijke baggerwerken langs de noordoostelijke rand van de Plaat van Saaftinge (bijlage 1) heeft de in scheepvaartkringen beruchte Bocht van Bath de laatste jaren een wat gunstiger ligging verkregen. Het aan de benedenstroomse zijde van het Nauw van Bath optredende vloedstroombeeld (dwarsstromingen vanuit de Zimmermangeul) vormt echter een omstandigheid waarmee ook thans nog terdege rekening moet worden gehouden. In het begin van 1963 vond in het Nauw van Bath ter hoogte van de uitloop van de Zimmermangeul een ernstige scheepsramp plaats. De bewuste uitloop vertoonde toendertijd een opmerkelijk sterke ontwikkeling met een vooral bij springtij zeer ongunstige stromingssituatie. Voor de Antwerpse Zeediensten was de toenemende ontwikkeling van de Zimmermangeul overigens reeds in oktober 1962 reden een onderzoek naar het in dit gebied optredende stroombeeld te verrichten. De opgetreden scheepsramp vormde voor de Studiedienst Vlissingen de aanleiding een onderzoek naar de ontwikkelingen in ing. D. de Looff ir. J. van Malde dit gebied in te stellen
Comparison of propofol-based anesthesia to conventional inhalational general anesthesia for spine surgery-Few queries
No full textMeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Scholarly Communication and Publishing Lunch and Learn Talk #11: The ULS Open Access Author Fee Fund
No full textAt the May 2014 talk, you will learn about the ULS Open Access Author Fee Fund--what it is, why we do it, how it works, and how the program is going so far
Anaesthesia risk stratification: Time to think beyond American society of anesthesiologists physical status classification
No full textD-0-(D)over-bar(0) mixing studies with the decays D-0 -> (KSK -/+)-K-0 pi(+/-)
No full textWe demonstrate how a time-dependent analysis of the decays D 0→K S0K ∓π ± can be used to determine the D 0-D∥ 0 mixing parameter y with a precision that is competitive with established methods. The proposed analysis is an inclusive study which makes use of the measurements of the coherence factor and mean strong phase difference for these decays recently performed by CLEO. © 2011 Elsevier B.V
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