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  • 2020-2024  (7)
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  • 2024  (7)
  • 1964  (1)
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  • German  (8)
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  • 2020-2024  (7)
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  • 1
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    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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    OPUS
  • 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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    OPUS
  • 5
    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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  • 6
    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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  • 7
    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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  • 8
    Journal/Serial
    Journal/Serial
    Bild der Wissenschaft : bdw (from 1964)
    Leinfelden-Echterdingen :Konradin Medien | Stuttgart ; 1.1964 - 45.2008; [46.]2009 - [47.]2010,5; 47.2010,6 -
    Details
    Title: Bild der Wissenschaft : bdw
    Publisher: Leinfelden-Echterdingen :Konradin Medien , Stuttgart
    Year of publication: 1964
    Dates of Publication: 1.1964 - 45.2008; [46.]2009 - [47.]2010,5; 47.2010,6 -
    ISSN: 0006-2375
    Type of Medium: Journal/Serial
    Language: German
    Former Title: ÂX - Magazin fur Naturwissenschaft und Technik
    Note: Plus; ab 43.2006: Tec , [35.]1998 auf dem Jg.-Register falschlich als Jg. 34 bez.; anfangs vierteljahrl., spater monatl. , 10-Jahres-Index auf Diskette (1981/91) mit einem Referenzhandbuch und einem Benutzerhandbuch als Monographie (Kern, Ulrich: TDB 4 ; Wuerzburg: Vogel 1990) ersch.
    Additional Information: ÂêTheë best of futuris
    Additional Information: ÂKlaus-Tschira-Preis fur verstandliche Wissenschaft
    Parallel Title: ÂBild der Wissenschaft online
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