106,327 research outputs found
Welle und Gedächtnis: von Alessandro Manzoni zu Gerhard Kofler
No full text[Schriftenreihe des Instituts für Deutsch als Fremdsprachenphilologie, hg.v. H.-G-Schwarz, C.v.Stutterheim, F.Loquai, G.M.Rösch, Band X
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
Effect of light sleep on three-dimensional eye position in static roll and pitch
No full textWe examined three-dimensional eye positions in alertness and light sleep when monkeys were placed in different roll and pitch body orientations. In alertness, eye positions were confined to a fronto-parallel (Listing's) plane, torsional variability was small and static roll or pitch induced a torsional shift or vertical rotation of these planes. In light sleep, the planes rotated temporally by about 10°, torsional variability increased by a factor of two and the static otolith-ocular reflexes were reduced by about 70%. These data support the importance of a neural control of the thickness and orientation of Listing's plane, and suggest that part of the vestibular input underlying otolith-ocular reflexes depend on polysynaptic neural processing
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
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
The Quantified Listener: Reshaping Providers and Audiences with Calculative Measurements
No full textPassoth J-H, Sutter T, Wehner J. The Quantified Listener: Reshaping Providers and Audiences with Calculative Measurements. In: Hepp A, Krotz F, eds. Mediatized Worlds. Basingstoke u.a.: Palgrave; 2014: 271-287
Gesellschaft im Spiegel der Zahlen – Die Rolle der Medien
No full textWehner J, Passoth J-H, Sutter T. Gesellschaft im Spiegel der Zahlen – Die Rolle der Medien. In: Hepp A, Krotz F, eds. Mediatisierte Welten: Beschreibungsansätze und Forschungsfelder. Wiesbaden: VS Verlag für Sozialwissenschaften; 2012: 59-86
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Contribution of Information and Communication Technology (ICT) in Country’S H-Index
No full textThe aim of this study is to examine the effect of Information and Communication Technology (ICT) development on country’s scientific ranking as measured by H-index. Moreover, this study applies ICT development sub-indices including ICT Use, ICT Access and ICT skill to find the distinct effect of these sub-indices on country’s H-index. To this purpose, required data for the panel of 14 Middle East countries over the period 1995 to 2009 is collected. Findings of the current study show that ICT development increases the H-index of the sample countries. The results also indicate that ICT Use and ICT Skill sub-indices positively contribute to higher H-index but the effect of ICT access on country’s H-index is not clear
Reconstructing lake evaporation history and the isotopic composition of precipitation by a coupled delta<sup>18</sup>O–delta<sup>2</sup>H biomarker approach
No full textOver the past decades, delta O-18 and delta H-2 analyses of lacustrine sediments became an invaluable tool in paleohydrology and paleolimnology for reconstructing the isotopic composition of past lake water and precipitation. However, based on delta O-18 or delta H-2 records alone, it can be challenging to distinguish between changes of the precipitation signal and changes caused by evaporation. Here we propose a coupled, delta O-18-delta H-2 biomarker approach that provides the possibility to disentangle between these two factors. The isotopic composition of long chain n-alkanes (n-C-33, n-C-27, n-C-31) were analyzed in order to establish a 16 ka Late Glacial and Holocene delta H-2 record for the sediment archive of Lake Panch Pokhari in High Himalaya, Nepal. The delta H-2(n-alkane) record generally corroborates a previously established delta O-18(sugar) record reporting on high values characterizing the deglaciation and the Older and the Younger Dryas, and low values characterizing the Bolling and the Allerod periods. Since the investigated n-alkane and sugar biomarkers are considered to be primarily of aquatic origin, they were used to reconstruct the isotopic composition of lake water. The reconstructed deuterium excess of lake water ranges from +57 parts per thousand to -85 parts per thousand and is shown to serve as proxy for the evaporation history of Lake Panch Pokhari. Lake desiccation during the deglaciation, the Older Dryas and the Younger Dryas is affirmed by a multi-proxy approach using the Hydrogen Index (HI) and the carbon to nitrogen ratio (C/N) as additional proxies for lake sediment organic matter mineralization. Furthermore, the coupled delta O-18 and delta H-2 approach allows disentangling the lake water isotopic enrichment from variations of the isotopic composition of precipitation. The reconstructed 16 delta O-18(precipitation) record of Lake Panch Pokhari is well in agreement with the delta O-18 records of Chinese speleothems and presumably reflects the Indian Summer Monsoon variability. (C) 2014 Elsevier B.V. All rights reserved.German Research Foundation [ZE 844/1-2
- …
