Approximately counting answers to conjunctive queries with disequalities and negations

Autor: Focke, J, Goldberg, L, Roth, M, Zivny, S

Publikováno v: Symposium on Principles of Database Systems
Proceedings of the 41st ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems

We study the complexity of approximating the number of answers to a small query $\varphi$ in a large database $\mathcal{D}$. We establish an exhaustive classification into tractable and intractable cases if $\varphi$ is a conjunctive query with diseq

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2cc4d1bf6bedd830c439e0b8e12c948
https://doi.org/10.1145/3517804.3526231

Novel Size-Variable Dedicated Rodent Oxygenator for ECLS Animal Models-Introduction of the "RatOx" Oxygenator and Preliminary In Vitro Results.

Autor: Strudthoff LJ; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Focke J; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Hesselmann F; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Kaesler A; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Martins Costa A; Department of Biomechanical Engineering, Faculty of Engineering Technologies, University of Twente, 7522 LW Enschede, The Netherlands., Schlanstein PC; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Schmitz-Rode T; Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Steinseifer U; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Steuer NB; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany., Wiegmann B; Department for Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hanover, Germany.; Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), 30625 Hanover, Germany.; German Center for Lung Research (DLZ), 30625 Hanover, Germany., Arens J; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany.; Department of Biomechanical Engineering, Faculty of Engineering Technologies, University of Twente, 7522 LW Enschede, The Netherlands., Jansen SV; Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany.

Publikováno v: Micromachines [Micromachines (Basel)] 2023 Mar 31; Vol. 14 (4). Date of Electronic Publication: 2023 Mar 31.

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.

[Arthroscopically-assisted treatment of acute and chronic dislocations of the acromioclavicular joint : A prospective clinical trial].

Autor: Holschen M; Klinik für Unfall- und orthopädische Chirurgie, Raphaelsklinik Münster, Loerstr. 23, 48143, Münster, Deutschland. holmal@web.de.; Orthopädische Praxisklinik Münster, Münster, Deutschland. holmal@web.de., Focke J; Orthopädische Praxisklinik Münster, Münster, Deutschland., Witt KA; Orthopädische Praxisklinik Münster, Münster, Deutschland., Steinbeck J; Orthopädische Praxisklinik Münster, Münster, Deutschland.

Publikováno v: Der Orthopade [Orthopade] 2021 Mar; Vol. 50 (3), pp. 214-223.