104,790 research outputs found
Joseph II, Patriarch of the Chaldeans (1696-1713/4), and the Book of the Magnet. First Soundings
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It is not right to call ourselves orthodox and the other heretics. Ecumenical Attitudes in the Jacobite Church in the Time of the crusaders
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Inkomen, doorstromen en uitsorteren. Arm en rijk op de Nederlandse grootstedelijke woningmarkt.
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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
Assessing the value of 18FDG-PET in lung cancer: drom theory to practice : From theory to practice
No full textPositron emission tomography (PET) allows noninvasive visualization and quantitative assessment of physiologic and biochemical processes within the human body. In cancer, the glucose analog fluorodeoxyglucose (18FDG) is the most commonly applied radioisotope and its uptake reflects cellular metabolism, which is increased in many tumors. PET differs from other imaging technology such as magnetic resonance imaging (MRI), computed tomography (CT) or ultrasound techniques, which mainly show structural (anatomical) information. Consequently, PET may improve patient management by early diagnosis, improved staging, monitoring of response to therapy and surveillance during follow- up. PET however, is expensive and studies are needed to assess its cost-effective indications. Sensitivity and specificity of diagnostic tests usually do not allow an appropriate assessment of its (cost-) effectiveness in clinical practice. Imaging tests are usually performed serially as part of a complex work-up process and provide differentiated estimates of disease probability. Hence, the contribution of a new test to the overall patient outcome is preferably measured by comparing the diagnostic process including the new test concurrently with the prevailing diagnostic work-up. Obviously, such a study should be preceded by formal analyses of residual inefficiency of the prevailing diagnostic work-up and of the potential diagnostic and therapeutic impact of the new test. This thesis presents the results and theoretical background of a series of coherent studies that have been performed to evaluate the use of PET in particular in non-small-cell lung cancer. The outcome of a randomized controlled trial suggests that the addition of PET to conventional workup may prevent unnecessary surgery in one out of five patients. Further, cost analyses indicate that this result makes PET cost-effective in most common situations. The framework of studies presented in this thesis may serve as a reference for the evaluation of cost-effectiveness of other diagnostic devices.Boers, M. [Promotor]Teule, G.J.J. [Promotor]Hoekstra, O.S. [Copromotor
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 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
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