1,451,477 research outputs found
News [E-Finance Lab Frankfurt am Main]
No full textDas E-Finance Lab publiziert jeweils quartalsweise einen digitalen sowie einen gedruckten Newsletter, die abwechselnd alle sechs Wochen erscheinen. Der digitale Newsletter gibt einen kurzen Überblick über ausgewählte Forschungsarbeiten und nutzt den Einsatz von Hyperlinks zu weiterführenden Informationen. Der gedruckte Newsletter "EFL quarterly : an E-Finance Lab publication" hingegen beschreibt kompakt und ergebnisorientiert einzelne Forschungsprojekte. S.a. http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30:3-1588
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
On the fate of plumes from deep-sea oil well blowouts, and their effects on sediment communities
No full textLittle is known about the fate of subsurface hydrocarbon plumes from prolonged oil well blowouts, and their effects on deep-sea sediment communities. As deepwater drilling expands in the Faroe-Shetland Channel (FSC), oil well blowouts are a possibility, and the complex ocean circulation of this region presents challenges to understanding possible subsurface oil pathways. Here, questions on the fate and effects of subsurface oil plumes were addressed with experiments and modelling. Experiments were performed on uncontaminated deep-sea sediments from a site remote from the FSC. A three dimensional ocean general circulation model (GCM) was used with a Lagrangian particle tracking algorithm to study patterns of subsurface oil distribution from a release in the FSC for the period 1994 – 2009.Deep-sea sediment microcosms were incubated in the presence of water accommodated fraction of crude oil (WAF) at low to high (5 % to 50 % by water volume) treatment levels, with sediment community oxygen consumption (SCOC) measured and compared to controls. Sediment macrofauna and bacteria were studied using measures of biomass. The microbial community was further studied using relative abundance and stable carbon isotope ratios (?13C values) of phospholipid fatty acids (PLFAs).Oxygen demand increased significantly at higher treatment levels (25% to 50% WAF). Treatment effects on macrofauna biomass were non-significant. However, there was significant WAF-driven reduction in bacteria biomass, and clear changes in microbial community composition. There were non-significant shifts in the ?13C values of PLFAs.Release depth of modelled subsurface plumes affected both the direction and extent of their transport and there was both seasonal and interannual variability. Plumes that were advected into overflow water were carried the furthest (>2500 km in June 2008); westwards through the Faroe Bank Channel towards the Iceland basin, reaching as far as southern Greenland, the Labrador Sea and the Northwest Atlantic. An index of temperature-controlled oxygen consumption rate (simulating oil respiration) indicated that large areas of the subsurface ocean (>50,000 km2 in 300 m depth water after one month) would be impacted by increased oxygen consumption in the event of a prolonged oil well blowout and the seafloor footprint beneath the plumes could be up to 100,000 km2. Quantifying impacts of any potential future spill in the FSC will benefit from these investigations on the distribution and effects of subsurface oil in this region
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
Fachkatalog Neuguinea / Stadt- und Universitätsbibliothek Frankfurt am Main
No full textAus Anlaß des Kongresses der "Deutsch-Pazifischen Gesellschaft" im Juni 1981 in Düsseldorf legt die Stadt- und Universitätsbibliothek Frankfuxt am Main ein Verzeichnis ihrer Bestände zum Raum "Neuguinea" vor . Dabei umfaßt der Katalog sowohl die Literatur zu "Papua-Neuguinea" (Niugini)" als auch zur indonesischen Provinz "West-Irian (Irian Jaya)". Aus Gründen des geographischen Zusammenhangs werden in einem Anhang allgemeine Publikationen zum Raum Melanesien in den Katalog aufgenommen. Die gezielte Sammlung der Literatur zu diesem Raum ist ein Ergebnis der Zuweisung des Sondersarnmelgebietes "Ozeanian" durch die Deutsche Forschungagemeinschaft an die Frankfurter Stadt- und Univeraitätsbibliothek. Dabei liegt der Schwerpunkt auf der Sammlung historischer und ethnologischer Literatur. Grundlage des Katalogausdruckes ist der Länderteil des Sachkataloges der Bibliothek, der nach feststehenden Länderkennziffern, Fachgruppen und Schlüsselnummern gegliedert ist. Unter jeder Schlüsselnummer sind die Eintragungen chronologisch geordnet. Auf jeder Titelkarte befindet sich rechts oben die Signatur, unter der das Buch über Fernleihe bei der Stadt- und Universitätsbibliothek Frankfurt am Main bestellt werden kann
Diet of the Antarctic starry skate Amblyraja georgiana (Rajidae, Chondrichthyes) at South Georgia (Southern Ocean)
No full textStomach contents were identified from 206 Antarctic starry skate (Amblyraja georgiana) that were collected during three groundfish surveys (September 2007, April 2008 and January 2009) at South Georgia, Southern Ocean. The diet of A. georgiana varied with skate size and between years. Preferred prey included fish (particularly for larger individuals) and Antarctic krill, Euphausia superba, as well as amphipods, polychaetes and other benthic fauna. The skate A. georgiana appears to be an opportunistic predator, and the clear presence of Antarctic krill in this demersal predator’s diet may indicate a benthic habit of this euphausiid species, which has hitherto mainly been considered as occupying a purely pelagic niche
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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