1,720,979 research outputs found

    “Maritime History Has Become a Huge and Highly Specialized Field Today” – 5in10 with Sebastian Kolditz

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    Sebastian Kolditz (Bild: Claudio Cassaro) Sebastian Kolditz studied history and physics at the Universities of Leipzig and Vienna. He received his PhD in Medieval History with a thesis on the Council of Ferrara-Florence in 1438/39. After having spent some years at the Centre for Mediterranean Studies at Ruhr Universität Bochum he has been working at the history department of Heidelberg University since 2013. In 2019/20 he is Ludwig and Margarethe Quidde fellow at the German Historical Insti..

    Sebastian Kolditz, Johannes VIII. Palaiologos und das Konzil von Ferrara-Florenz (1438/ 39). Das byzantinische Kaisertum im Dialog mit dem Westen (Monographien zur Geschichte des Mittelalters 60). – A. Hiersemann, Stuttgart 2013-2014

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    Blanchet Marie-Hélène. Sebastian Kolditz, Johannes VIII. Palaiologos und das Konzil von Ferrara-Florenz (1438/ 39). Das byzantinische Kaisertum im Dialog mit dem Westen (Monographien zur Geschichte des Mittelalters 60). – A. Hiersemann, Stuttgart 2013-2014. In: Revue des études byzantines, tome 74, 2016. pp. 428-430

    Von der Ostsee zum Mittelmeer. Forschungen zur Mittelalterlichen Geschichte für Wolfgang Huschner / Dal Mar Baltico al Mediterraneo. Ricerche di storia medievale per Wolfgang Huschner

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    Raccolti in cinque capitolii intitolati "Im Spiegel der Urkunden", "Herrschaftssymbolik und Herrschaftspräsenz", "Transalpine und andere Kommunikationen", "Klöster im europäischen Kontext", "Mecklenburgica", vengono pubblicate 37 ricerche inedite di medievisti e diplomatisti in occasione del giubileo di Wolfgang Huschner

    Im Herzen des Mittelmeers: Das mittelalterliche Sizilien zwischen regionaler Dimension und mediterranen Systemen

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    Il saggio analizza la posizione della Sicilia di età bizantina e islamica e poi bassomedievale nei sistemi di scambio a lunga e media distanza che si avvicendarono nel Mediterraneo, e la loro interazione con le strutture e le trasformazioni dell'economia regionale

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Bizancjum w renesansowej Italii zapamiętane. Cesarz Jan VIII Paleolog na soborze florenckim (1438–1439)

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    Sobór florencki w 1439 r., zakończony unią kościelną między Rzymem a Konstantynopolem, dawał nadzieje Bizancjum na ogłoszenie przez papiestwo krucjaty przeciw Turkom osmańskim i uchronienie cesarstwa przed zagładą. Badacze zajmujący się tą problematyką skupiali się głównie na dyskusjach dotyczących różnic dogmatycznych dzielących oba Kościoły. Inną perspektywę przyjął Sebastian Kolditz, który w recenzowanej pracy udowodnił niekwestionowany autorytet cesarza Jana VIII Paleologa, mającego decydujący wpływ na obrady soborowe i ich rezultat. The Church Union between Rome and Constantinople signed during the Council of Florence in 1439 made it possible for Byzantium to hope that the papacy would launch a crusade against the Ottoman Turks and save the Empire from disaster. Scholars dealing with this subject concentrated mostly on discussions concerning the differences in dogmas dividing the two Churches. Sebastian Kolditz adopted a unique perspective and provided evidence of the unquestionable authority of John VIII Palaiologos, whose opinions during the council proceedings were decisive for the final conclusion

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We 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

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    We 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
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