128,633 research outputs found
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
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
Untersuchungen zur Kieferöffnungsweite bei Patienten mit bösartigen Kopf-Hals-Tumoren nach Abschluss der Primärtherapie
No full textEinleitung: Patienten mit einem bösartigen Kopf-Hals-Tumor haben nach der Primärtherapie häufig Probleme bei der Nahrungsaufnahme. Diese Probleme können durch die veränderten operationsbedingten anatomischen Strukturen, aber auch als Folge der Radio-Chemotherapie auftreten. Neben Schluckbeschwerden klagen die Patienten häufig auch über eine eingeschränkte Kieferöffnungsweite. Dieser Aspekt wird bislang bei der komplexen Rehabilitation von Patienten mit bösartigen Kopf-Hals-Tumoren nicht ausreichend gewürdigt.Methoden: Aus dem Tumordispensaire der Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie "Otto Körner" wurde an einem unausgewählten Patientengut die Kieferöffnungsweite bei Patienten nach abgeschlossener Therapie mit bösartigen Kopf-Hals-Tumoren bestimmt.Ergebnisse: Die Kieferöffnungsweite wurde bei 100 Patienten mit bösartigen Kopf-Hals-Tumoren gemessen. In Abhängigkeit von der vorangegangenen Therapie und der Lokalisation des Primärtumors zeigen sich unterschiedliche Ergebnisse. Bei Patienten mit Oropharynxkarzinomen war die Kieferöffnungsweite am häufigsten eingeschränkt.Schlussfolgerungen: Patienten mit bösartigen Kopf-Hals-Tumoren sollten nach der durchgeführten Therapie gezielt nach einer Beeinträchtigung der Kieferöffnungsweite untersucht werden, ggf. ist eine Therapie mit einem entsprechenden Trainingsgerät, wie es z. B. Therabite® darstellt, einzuleiten
Cross-section through the frontal Japan Trench subduction zone: Geochemical evidence for fluid flow and fluid-rock interaction from DSDP and ODP pore waters and sediments
No full textFluids and sediments from Deep Sea Drilling Project/Ocean Drilling Program Legs (56, 57, 87 and 186) along a transect extending from the subducting plate, across the midslope and upper slope of the Japan Trench forearc were analyzed for B and B isotopes in order to assess their composition and fluid-sediment interaction. At the reference Site 436 on the subducting plate, changes in B contents and B isotopes are controlled by the lithology and diagenesis only. The midslope Sites 440 and 584 showed stronger variations in the B geochemistry, which can be related to diagenesis and tectonic dewatering along faults. The strongest changes in the B geochemistry were observed on the upper slope Sites 1150 and 1151, where profound down-hole freshening (chlorinities as low as similar to310 mmol) coincides with a B enrichment (up to 9.3 x seawater concentration). The B isotope pore fluid profile of Site 1150 displayed a bimodal variation with depth, first increasing to values more positive than seawater, then shifting to lower signatures typical for deep-seated fluids, whereas Site 1151 showed a constant B decrease with depth. Sites 1150 and 1151 sediments showed B increases with depth to values as high as similar to164 p.p.m. and isotopic compositions ranging from similar to+4 to -9parts per thousand. A linear decrease in B-solid/B-fluid ratio, suggests that B geochemistry of the upper slope sites is controlled by fluid-rock interaction and deep-seated fluid flow, whereas constant B-solid/B-fluid ratios were observed at the reference site on the incoming plate. This fluid overprint is probably caused by normal faults in the sediment cover which might be interconnected to deep thrusts in the underlying Cretaceous accreted wedge. This suggests that the erosive Japan Trench margin is characterized by back-flux of deep-seated, B-enriched fluids into the ocean, which is facilitated by extensional normal faulting as a result of tectonic erosion and subsidence
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
Hepatic metastases of hemangiopericytoma: contrast-enhanced MRI, contrast-enhanced ultrasonography and angiography findings
No full textDas Fließband im Kopf: Computer und Rationalisierung
No full textHeintz B. Das Fließband im Kopf: Computer und Rationalisierung. In: Brändli S, ed. Schweiz im Wandel: Studien zur neueren Gesellschaftsgeschichte ; Festschrift für Rudolf Braun zum 60. Geburtstag. Basel [u.a.]: Helbing u. Lichtenhahn; 1990: 117-147
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
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
Datensatz Genitiv- und von-Attribute
No full textDer Datensatz enthält 16.604 Korpusbelege aus Nominalphrasen mit Genitiv- und von-Attributen (die Ideen zahlreicher Kinder, die Ideen von zahlreichen Kindern), wobei die Genitivattribute prä- oder postnominal erscheinen können (Mannheims Sehenswürdigkeiten, die Sehenswürdigkeiten Mannheims).
Für jeden Beleg sind Informationen zu Land, Dekade und Medium enthalten. Hinzu kommen Angaben zu Kopf- und/oder Attributslemma (z. B. Namentyp, Flexionsklasse), Gesamtphrase (z. B. Definitheit, Kasus) und Attributsphrase (z. B. Kasusdistinktion, Länge). Zahlreiche Sonderfälle sind ebenfalls annotiert (z. B. Genitiv bei nichtflektiertem Adjektiv wie Gebäck Mannheimer Bäckereien, Phrasen mit adjektivisch flektierendem Attributsnomen wie die Ideen Jugendlicher, die Ideen von Jugendlichen)
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