1,721,132 research outputs found
4 Fragen an... Sebastian Koch. Thema: Inflation
No full textIHS-Ökonom Sebastian Koch ist zu Gast für die zweite Folge der Serie "4 Fragen an...". Wir sprechen mit ihm über ein Thema, das gerade wieder aktuell ist – die Inflation. Was Inflation ist, welche Preise sie antreiben und wieso sie sich von Person zu Person gefühlt ändert, erklärt Koch im Interview
Introduction to Graph Enumerations
Get PDFIn this article sets of certain subgraphs of a graph are formalized in the Mizar system [7], [1], based on the formalization of graphs in [11] briefly sketched in [12]. The main result is the spanning subgraph theorem.Mainz, GermanyGrzegorz Bancerek, Czesław Byliński, Adam Grabowski, Artur Korniłowicz, Roman Matuszewski, Adam Naumowicz, and Karol Pąk. The role of the Mizar Mathematical Library for interactive proof development in Mizar. Journal of Automated Reasoning, 61(1):9–32, 2018. doi:10.1007/s10817-017-9440-6.John Adrian Bondy and U. S. R. Murty. Graph Theory. Graduate Texts in Mathematics, 244. Springer, New York, 2008. ISBN 978-1-84628-969-9.Ricky W. Butler and Jon A. Sjogren. A PVS graph theory library. Technical report, NASA Langley, 1998.Ching-Tsun Chou. A formal theory of undirected graphs in higher-order logic. In Thomas F. Melham and Juanito Camilleri, editors, Higher Order Logic Theorem Proving and Its Applications, 7th International Workshop, Valletta, Malta, September 19–22, 1994, Proceedings, volume 859 of Lecture Notes in Computer Science, pages 144–157. Springer, 1994. doi:10.1007/3-540-58450-1_40.Reinhard Diestel. Graph Theory, volume Graduate Texts in Mathematics; 173. Springer, Berlin, fifth edition, 2017. ISBN 978-3-662-53621-6.Jessica Enright and Piotr Rudnicki. Helly property for subtrees. Formalized Mathematics, 16(2):91–96, 2008. doi:10.2478/v10037-008-0013-3.Adam Grabowski, Artur Korniłowicz, and Adam Naumowicz. Four decades of Mizar. Journal of Automated Reasoning, 55(3):191–198, 2015. doi:10.1007/s10817-015-9345-1.Sebastian Koch. Miscellaneous graph preliminaries. Part I. Formalized Mathematics, 29 (1):21–38, 2021. doi:10.2478/forma-2021-0003.Sebastian Koch. Underlying simple graphs. Formalized Mathematics, 27(3):237–259, 2019. doi:10.2478/forma-2019-0023.Sebastian Koch. About graph sums. Formalized Mathematics, 29(4):249–278, 2021. doi:10.2478/forma-2021-0023.Gilbert Lee and Piotr Rudnicki. Alternative graph structures. Formalized Mathematics, 13(2):235–252, 2005.Gilbert Lee and Piotr Rudnicki. Alternative aggregates in Mizar. In Manuel Kauers, Manfred Kerber, Robert Miner, and Wolfgang Windsteiger, editors, Towards Mechanized Mathematical Assistants, pages 327–341, Berlin, Heidelberg, 2007. Springer Berlin Heidelberg. ISBN 978-3-540-73086-6. doi:10.1007/978-3-540-73086-6_26.Lars Noschinski. A graph library for Isabelle. Mathematics in Computer Science, 9(1): 23–39, 2015. doi:10.1007/s11786-014-0183-z.Robin James Wilson. Introduction to Graph Theory. Oliver & Boyd, Edinburgh, 1972. ISBN 0-05-002534-1.311315
About Regular Graphs
Get PDFIn this article regular graphs, both directed and undirected, are formalized in the Mizar system [7], [2], based on the formalization of graphs as described in [10]. The handshaking lemma is also proven.Mainz, GermanyBroderick Arneson and Piotr Rudnicki. Chordal graphs. Formalized Mathematics, 14(3): 79–92, 2006. doi:10.2478/v10037-006-0010-3.Grzegorz Bancerek, Czesław Byliński, Adam Grabowski, Artur Korniłowicz, Roman Matuszewski, Adam Naumowicz, and Karol Pąk. The role of the Mizar Mathematical Library for interactive proof development in Mizar. Journal of Automated Reasoning, 61(1):9–32, 2018. doi:10.1007/s10817-017-9440-6.John Adrian Bondy and U. S. R. Murty. Graph Theory. Graduate Texts in Mathematics, 244. Springer, New York, 2008. ISBN 978-1-84628-969-9.Ricky W. Butler and Jon A. Sjogren. A PVS graph theory library. Technical report, NASA Langley, 1998.Ching-Tsun Chou. A formal theory of undirected graphs in higher-order logic. In Thomas F. Melham and Juanito Camilleri, editors, Higher Order Logic Theorem Proving and Its Applications, 7th International Workshop, Valletta, Malta, September 19–22, 1994, Proceedings, volume 859 of Lecture Notes in Computer Science, pages 144–157. Springer, 1994. doi:10.1007/3-540-58450-1_40.Reinhard Diestel. Graph Theory, volume Graduate Texts in Mathematics; 173. Springer, Berlin, fifth edition, 2017. ISBN 978-3-662-53621-6.Adam Grabowski, Artur Korniłowicz, and Adam Naumowicz. Four decades of Mizar. Journal of Automated Reasoning, 55(3):191–198, 2015. doi:10.1007/s10817-015-9345-1.Sebastian Koch. Miscellaneous graph preliminaries. Part I. Formalized Mathematics, 29 (1):21–38, 2021. doi:10.2478/forma-2021-0003.Sebastian Koch. About graph sums. Formalized Mathematics, 29(4):249–278, 2021. doi:10.2478/forma-2021-0023.Gilbert Lee and Piotr Rudnicki. Alternative aggregates in Mizar. In Manuel Kauers, Manfred Kerber, Robert Miner, and Wolfgang Windsteiger, editors, Towards Mechanized Mathematical Assistants, pages 327–341, Berlin, Heidelberg, 2007. Springer Berlin Heidelberg. ISBN 978-3-540-73086-6. doi:10.1007/978-3-540-73086-6_26.Lars Noschinski. A graph library for Isabelle. Mathematics in Computer Science, 9(1): 23–39, 2015. doi:10.1007/s11786-014-0183-z.Robin James Wilson. Introduction to Graph Theory. Oliver & Boyd, Edinburgh, 1972. ISBN 0-05-002534-1.311758
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
Supplemental_Table_1 – Supplemental material for Reconstruction of Nasal Defects With Dermal Skin Substitutes—A Retrospective Study of 36 Defects
No full textSupplemental material, Supplemental_Table_1 for Reconstruction of Nasal Defects With Dermal Skin Substitutes—A Retrospective Study of 36 Defects by Katharina Moratin, Philipp-Sebastian Koch, Johannes Benecke, Azadeh Orouji, Corinne Bauer, Jörg Faulhaber, Wolfgang Koenen and Moritz Felcht in Journal of Cutaneous Medicine and Surgery</p
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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