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  • German  (16)
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  • 2020-2024  (7)
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  • 1
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    Unknown
    Spectral clustering of Markov chain transition matrices with complex eigenvalues (2024)
    Details
    Publication Date: 2024-01-29
    Description: The Robust Perron Cluster Analysis (PCCA+) has become a popular spectral clustering algorithm for coarse-graining transition matrices of nearly decomposable Markov chains with transition states. Originally developed for reversible Markov chains, the algorithm only worked for transition matrices with real eigenvalues. In this paper, we therefore extend the theoretical framework of PCCA+ to Markov chains with a complex eigen-decomposition. We show that by replacing a complex conjugate pair of eigenvectors by their real and imaginary components, a real representation of the same subspace is obtained, which is suitable for the cluster analysis. We show that our approach leads to the same results as the generalized PCCA+ (GPCCA), which replaces the complex eigen-decomposition by a conceptually more difficult real Schur decomposition. We apply the method on non-reversible Markov chains, including circular chains, and demonstrate its efficiency compared to GPCCA. The experiments are performed in the Matlab programming language and codes are provided.
    Language: German
    Type: article , doc-type:article
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    OPUS
  • 2
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    Fiber-coupled solid-state-based single-photon sources (2024)
    Details
    Publication Date: 2024-02-27
    Language: German
    Type: incollection , doc-type:Other
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  • 3
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    Clinical Effectiveness of Ritonavir-Boosted Nirmatrelvir—A Literature Review (2024)
    Details
    Publication Date: 2024-06-13
    Description: Nirmatrelvir/Ritonavir is an oral treatment for mild to moderate COVID-19 cases with a high risk for a severe course of the disease. For this paper, a comprehensive literature review was performed, leading to a summary of currently available data on Nirmatrelvir/Ritonavir’s ability to reduce the risk of progressing to a severe disease state. Herein, the focus lies on publications that include comparisons between patients receiving Nirmatrelvir/Ritonavir and a control group. The findings can be summarized as follows: Data from the time when the Delta-variant was dominant show that Nirmatrelvir/Ritonavir reduced the risk of hospitalization or death by 88.9% for unvaccinated, non-hospitalized high-risk individuals. Data from the time when the Omicron variant was dominant found decreased relative risk reductions for various vaccination statuses: between 26% and 65% for hospitalization. The presented papers that differentiate between unvaccinated and vaccinated individuals agree that unvaccinated patients benefit more from treatment with Nirmatrelvir/Ritonavir. However, when it comes to the dependency of potential on age and comorbidities, further studies are necessary. From the available data, one can conclude that Nirmatrelvir/Ritonavir cannot substitute vaccinations; however, its low manufacturing cost and easy administration make it a valuable tool in fighting COVID-19, especially for countries with low vaccination rates.
    Language: German
    Type: article , doc-type:article
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  • 4
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    URIs im GLAM-Bereich – was sie sind und wie man sie verwendet (2024)
    Details
    Publication Date: 2024-07-08
    Description: Das Papier gibt Hinweise zu URIs (Uniform Resource Identifiers) im GLAM-Sektor.
    Language: German
    Type: other , doc-type:Other
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  • 5
    Book
    Book
    ¬Eine¬ kurze Geschichte der Künstlichen Intelligenz / (2024)
    Stuttgart :Klett-Cotta,
    Details
    Title: ¬Eine¬ kurze Geschichte der Künstlichen Intelligenz /
    Author: Wildenhain, Michael
    Publisher: Stuttgart :Klett-Cotta,
    Year of publication: 2024
    Pages: 119 Seiten
    ISBN: 978-3-7681-9824-0
    Type of Medium: Book
    Language: German
    URL: Inhaltstext
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  • 6
    Book
    Book
    Künstliche Intelligenz und wissenschaftliches Arbeiten : ChatGPT & Co.: Der Turbo für ein erfolgreiches Studium (2024)
    München :Verlag Franz Vahlen,
    Details
    Title: Künstliche Intelligenz und wissenschaftliches Arbeiten : ChatGPT & Co.: Der Turbo für ein erfolgreiches Studium
    Author: Bucher, Ulrich
    Contributer: Holzweißig, Kai , Schwarzer, Markus
    Publisher: München :Verlag Franz Vahlen,
    Year of publication: 2024
    Pages: X, 181 Seiten
    ISBN: 978-3-8006-7322-3
    Type of Medium: Book
    Language: German
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  • 7
    Book
    Book
    Anwendungen mit GPT-4 und ChatGPT entwickeln : intelligente Chatbots, Content-Generatoren und mehr erstellen (2024)
    Heidelberg :O'Reilly,
    Details
    Title: Anwendungen mit GPT-4 und ChatGPT entwickeln : intelligente Chatbots, Content-Generatoren und mehr erstellen
    Author: Caelen, Olivier
    Contributer: Blete, Marie-Alice
    Edition: 1. Auflage
    Publisher: Heidelberg :O'Reilly,
    Year of publication: 2024
    Pages: 158 Seiten
    ISBN: 978-3-96009-241-4
    Type of Medium: Book
    Language: German
    URL: Inhaltstext
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  • 8
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    Gruppentheoretische Konstruktion von symmetrischen Kubaturformeln. (1990)
    Details
    Publication Date: 2014-02-26
    Description: $G$-invariant cubature formulas for numerical integration over n-dimensional, $G$- invariant integration regions are computed symbolically. The nodes are the common zeros of some $d$-orthogonal polynomials which build an $H$-basis of an ideal. Approaches for these polynomials depending on parameters are made with the help of the theory of linear representations of a group $G$. This theory is also used for the effective computation of necessary conditions which determines the parameters. Another approach uses invariant theory and gröbner bases.
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 9
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    Datenabhängigkeitsanalyse und Programmtransformationen auf CRAY-Rechnern mit dem Fortran-Präprozessor fpp (1990)
    Details
    Publication Date: 2020-03-09
    Description: The FORTRAN preprocessor fpp in the newly introduced Autotasking System of CRAY Research allows automatic vectorization and parallelization on basis of a data dependence analysis. An introduction into data dependence analysis is given, showing how data dependence graphs unveil opportunities for program transformations like vectorization and concurrentization. The report contains a complete description of the preprocessors functionality, its options and directives for increasing the effectiveness of the dependence analyzer and steering the code transformations. Finally, some advice is given for the practical use of fpp on CRAY computers.
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 10
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    CRAY-Handbuch. Einführung in die Benutzung der CRAY X-MP unter UNICOS 5.1 (1990)
    Details
    Publication Date: 2014-02-26
    Description: Das CRAY-Handbuch des ZIB beschreibt nach einer grundlegenden bersicht detailliert die Handhabung von UNICOS-Dateien, die Verwendung von UNICOS-Kommandos und schließlich die (für Benutzer allein zugelassene) Ausführung von Batchjobs auf der CRAY. Neben der Erreichbarkeit der CRAY über das TCP/IP-Netz werden die Compiler FORTRAN, PASCAL und C beschrieben und schließlich auf die Optimierung der Rechenzeit ebenso wie auf die Fehlersuche eingegangen. Ein umfangreicher Anhang führt bereitgestellte Programmpakete, weiterführende Literatur, Zahlenbereiche und Zeichendarstellung an der CRAY auf.
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 11
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    Einführung in die Numerische Mathematik. (1990)
    Details
    Publication Date: 2014-02-26
    Description: Diese Vorlesung ist eine Einführung in die Numerische Mathematik als einem der drei Bereiche (neben den Naturwissenschaften und der Informatik) des am besten mit dem Begriff Scientific Computing charakterisierten Forschungsgebietes. Aufgabe dieser relativ jungen Wissenschaft ist die Entwicklung von Rechenverfahren für Probleme aus den Naturwissenschaften mit Hilfe mathematischer Methoden.
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 12
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    Konrad Zuses Plankalkül als Vorläufer moderner Programmier-modelle. (Vortrag) (1990)
    Details
    Publication Date: 2014-02-26
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/postscript
    Format: application/pdf
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  • 13
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    Implementierung von parallelen Versionen der Gleichungslöser EULEX und EULSIM auf Transputern. (1990)
    Details
    Publication Date: 2014-02-26
    Description: Im vorliegenden Bericht wird die Parallelisierung zweier numerischer Algorithmen zur Lösung gewöhnlicher Differentialgleichungssysteme 1.Ordnung (explizite und semi-implizite Euler- Diskretisierung und $h$-Extrapolation) beschrieben. Implementiert wurden die Algorithmen mit OCCAM2 unter TDS (Transputer Development System) mit bis zu 4 Transputern T800. Meßwerte für die erreichten Beschleunigungen werden anhand mehrer Beispiele von Differentialgleichungs-systemen angegeben. {\bf Schlüsselwörter:} Adaptive, parallele Systeme; OCCAM2; Transputer; numerische Gleichungslöser; Euler-Diskretisierung; $h$-Extrapolation.
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 14
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    Zuses Werk weiterdenken. (Vortrag) (1990)
    Details
    Publication Date: 2014-02-26
    Keywords: ddc:000
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 15
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    Jahresbericht 1989 (1990)
    Details
    Publication Date: 2019-10-24
    Keywords: ddc:000
    Language: German
    Type: annualzib , doc-type:report
    Format: application/pdf
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  • 16
    Book
    Book
    Vorlesungs- und Personalverzeichnis (1990)
    Berlin :News & Media, | Potsdam PH WS 1990/91 | Potsdam Media Consulta Deutschland SS 1991 ; WS 1990/91(1990) -
    Details
    Title: Vorlesungs- und Personalverzeichnis
    Author: Universität Potsdam
    Contributer: Brandenburgische Landeshochschule 〈Potsdam〉 , Pädagogische Hochschule Karl Liebknecht 〈Potsdam〉
    Publisher: Berlin :News & Media, , Potsdam PH WS 1990/91 , Potsdam Media Consulta Deutschland SS 1991
    Year of publication: 1990
    Dates of Publication: WS 1990/91(1990) -
    ISSN: 0941-2433
    Type of Medium: Book
    Language: German
    Former Title: Vorg. ---〉: Pädagogische Hochschule 〈Potsdam〉: Personal- und Vorlesungsverzeichnis
    Note: Pädagogische Hochschule Karl Liebknecht Potsdam; Urh. SS 1991: Brandenburgische Landeshochschule Potsdam
    Parallel Title: Internetausg. ---〉: Universität 〈Potsdam〉: Vorlesungs- und Personalverzeichnis
    URL: Vorlesungs- und Personalverzeichnis Online
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