Schaub, Michael; Bamberger, Konrad; Derwein, Dennis; Rewitz, Kai; Müller, Dirk (2021)
HLH 72 (5), S. 22-26.
DOI: 10.37544/1436-5103-2021-05-22
Ullrich, Maximilian; Fischer, Dorothee; Deutsch, Sebastian; Meißner, Karin; Winnebeck, Eva C. (2021)
Ullrich, Maximilian; Fischer, Dorothee; Deutsch, Sebastian; Meißner, Karin...
BioRxiv (Pre-print).
DOI: 10.1101/2021.04.23.441149
Wolf, Alina ; Alberternst, Christiane; Hassel, Holger; Hößelbarth, Susann; Scheibe , Matthias (2021)
Wolf, Alina ; Alberternst, Christiane; Hassel, Holger; Hößelbarth, Susann...
Wolf, A.; Alberternst, C.; Döbereiner, L.; Hassel, H.; Hößelbarth, S.; Scheibe, M. (2021). Partizipative Akquise vulnerabler Gruppen im ländlichen Raum – IDEAL. Posterbeitrag. Trinationale Tagung der DGSA/OGSA/SGSA am 23. April 2021, online.
Kohls, Niko (2021)
Online Vortrag auf Einladung des Asta der TH Köln.
Hess, Mona ; Schlieder, Christoph ; Schnier, V.; Troi, Alexandra (2021)
IOP Conference Series: Earth and Environmental Science 863, 012035.
DOI: 10.1088/1755-1315/863/1/012035
Strutz, Tilo (2021)
Frontiers in Robotics and AI, 8:652417, 8.
DOI: 10.3389/frobt.2021.652417
Finding the shortest tour visiting all given points at least ones belongs to the most famous optimization problems until today (TSP . . . travelling salesman problem). Optimal solutions exist for many problems up to several ten thousand points. The major difficulty in solving larger problems is the required computational complexity. This shifts the research from finding the optimum with no time limitation to approaches that find good but sub-optimal solutions in pre-defined limited time. This paper proposes a new approach for two-dimensional symmetric problems with more than a million coordinates that is able to create good initial tours within few minutes. It is based on a hierarchical clustering strategy and supports parallel processing. In addition, a method is proposed that can correct unfavourable paths with moderate computational complexity. The new approach is superior to state-of-the-art methods when applied to TSP instances with non-uniformly distributed coordinates.
Röhrich, Christina; Giordano, J.; Kohls, Niko (2021)
Cardiovascular Diagnosis and Therapy, 11(2), 591-601. Retrieved from https://cdt.amegroups.com/article/view/59753, S. 591-601.
Röhrich , C.; Giordano, J.; Kohls, Niko (2021)
Cardiovascular Diagnosis and Therapy Vol 11, No 2, S. 591-601.
DOI: 10.21037/cdt-20-610
Wilde, Mathias (2021)
AKP - Fachzeitschrift für Alternative Kommunal Politik (4), S. 46-47.
Gross, Hellen; Schwarz , Nicole; Cramer von Clausbruch , Stefanie; Hary , Katharina (2021)
Gross, Hellen; Schwarz , Nicole; Cramer von Clausbruch , Stefanie...
Journal of Business Research 127, S. 373-381.
DOI: 10.1016/j.jbusres.2021.01.015
Schaub, Michael; Obermann, Steffen; Derwein, Dennis; Rewitz, Kai; Müller, Dirk (2021)
HLH 72 (4), S. 50-55.
DOI: 10.37544/1436-5103-2021-04-50
Meißner, Karin (2021)
Editorial, Complementary Medicine Research 28 (2), S. 87-88.
DOI: 10.1159/000515848
John, Dennis; Röhrich, Christina; Walter, Verena ; Pfeifer , Gabi; Kohls, Niko (2021)
Community-Based Nutrition Health Promotion Interventions – Evaluation of the Project „Gesunde Südstadt“ in Nuremberg]. Gesundheitswesen, 83(12), , S. e58-e65..
Leidner, Jochen L. (2021)
Handbook of Big Geospatial Data, S. 429–457.
DOI: 10.1007/978-3-030-55462-0_16
Offenbaecher, M.; Kohls, Niko; Ewert, T.; Sigl, C.; Hieblinger, R.; Toussaint, L. L.; Sirois, F.; Hirsch, Jameson; Vallejo, M. A.; Kramer, S.; Rivera, J.; Stucki, G.; Schelling, J.; Winkelmann, A. (2021)
Offenbaecher, M.; Kohls, Niko; Ewert, T.; Sigl, C.; Hieblinger, R.; Toussaint, L. L....
Rheumatology International.
DOI: https://doi.org10.1007/s00296-020-04702-5
Wilde, Mathias (2021)
IM+io - Das Magazin für Innovation, Organisation und Management (03), S. 76-79.
Meißner, Karin; Gaber, Helena; Gallasch, Svenja; Grabenbauer, Andrea; Güttler, Carina; Jank, Celine; Ott, Michaela; Middeldorf, Stefan (2021)
Meißner, Karin; Gaber, Helena; Gallasch, Svenja; Grabenbauer, Andrea; Güttler, Carina...
Orthopädische und Unfallchirurgische Praxis (OUP) 10 (2), S. 0133–0138.
DOI: 10.3238/oup.2021.0133–0138
Rieser, Alexander; Pfluger, Rainer; Troi, Alexandra; Herrera-Avellanosa, Daniel; Engel und Thomsen, Kirsten; Rose, Jorgen; Arsan, Zeynep Durmus; Akkurt, Gulden Gokcen; Kopeinig, Gerhard; Guyot, Gaelle; Chung, Daniel (2021)
Rieser, Alexander; Pfluger, Rainer; Troi, Alexandra; Herrera-Avellanosa, Daniel...
Sustainability, 13(4), 2325. MDPI AG 2021.
DOI: 10.3390/su13042325
Krempel, Sandro; Seidel, N.; Tietze, Sabrina; Drese, Klaus Stefan (2021)
ACTUATOR; International Conference and Exhibition on New Actuator Systems and Applications 2021.
Backer, Alexander; Krempel, Sandro; Ritter, Frank; Tietze, Sabrina; Drese, Klaus Stefan (2021)
Backer, Alexander; Krempel, Sandro; Ritter, Frank; Tietze, Sabrina...
ACTUATOR, International Conference and Exhibition on New Actuator Systems and Applications 2021, Online 2021, S. 66 - 69.
Nowadays in almost all cases, the propulsion of ships is generated by mechanically moved propellers, which causes water flow and thrust. The disadvantage of this technology is the wear of the mechanical moving parts as well as the danger of the rotating parts in the water for example for living beings. The only alternative is still the sail or wind power.
In our approach the propulsion of a boat is generated without moving parts by means of ultrasonic waves emitted into
the water. In contrast to already existing experiments in which surface acoustic waves are conducted directly into the
water on piezoelectric substrates in order to generate a thrust, here the sound input takes place by piezoelectric transducers attached to the backside of non-piezoelectric material at the outer hull of the boat. A 3D printed model boat was
built and tested. In contrast to the previously published literature, the used electronic components and their operation for
the propulsion of the boat are described in detail. Sound generation and propagation are simulated in COMSOL
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