@article{KazasidisVerpoortSolovievetal.2018, author = {Kazasidis, Orestis and Verpoort, Sven and Soloviev, Oleg and Vdovin, Gleb and Verhaegen, Michel and Wittrock, Ulrich}, title = {Extended-image-based correction of aberrations using a deformable mirror with hysteresis}, series = {Opt. Expr.}, volume = {26}, journal = {Opt. Expr.}, doi = {10.1364/OE.26.027161}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-14759}, pages = {27161 -- 27178}, year = {2018}, abstract = {With a view to the next generation of large space telescopes, we investigate guide-star-free, image-based aberration correction using a unimorph deformable mirror in a plane conjugate to the primary mirror. We designed and built a high-resolution imaging testbed to evaluate control algorithms. In this paper we use an algorithm based on the heuristic hill climbing technique and compare the correction in three different domains, namely the voltage domain, the domain of the Zernike modes, and the domain of the singular modes of the deformable mirror. Through our systematic experimental study, we found that successive control in two domains effectively counteracts uncompensated hysteresis of the deformable mirror.}, language = {en} } @article{Wittrock2010, author = {Wittrock, Ulrich}, title = {Laryngeally echolocating bats (Brief Communication Arising)}, series = {Nature}, volume = {466}, journal = {Nature}, doi = {10.1038/nature09156}, pages = {E6}, year = {2010}, language = {mul} } @article{SchulzeDeemannHartensueretal.2010, author = {Schulze, M and Deemann, D and Hartensuer, R and L{\"o}hrer, L and MJ, Raschke and H{\"o}lscher, U and Vordemvenne, T.}, title = {Investigation of multisegmental spinal biomechanics with a combined optical and robotic test setup}, series = {Langenbecks Archives of Surgery}, volume = {395}, journal = {Langenbecks Archives of Surgery}, pages = {769 -- 829}, year = {2010}, language = {en} } @article{SchulzeDeemannHartensueretal.2010, author = {Schulze, M and Deemann, D and Hartensuer, R and L{\"o}hrer, L and MJ, Raschke and H{\"o}lscher, U and Vordemvenne, T.}, title = {A new in vitro biomechanical test system to evaluate adjacent level effects of the lumbar spine (P 62)}, series = {European Spine Journal}, volume = {19}, journal = {European Spine Journal}, pages = {233 -- 364}, year = {2010}, language = {en} } @article{HoelscherSchrappe2010, author = {H{\"o}lscher, U and Schrappe, M}, title = {Patientensicherheit: Aufgaben der Medizintechnik im Krankenhaus}, series = {mt-Medizintechnik; ISSN 0344-9416}, volume = {01}, journal = {mt-Medizintechnik; ISSN 0344-9416}, pages = {3 -- 6}, year = {2010}, language = {de} } @article{BrueggemannStierHoelscher2010, author = {Br{\"u}ggemann, M and Stier, A and H{\"o}lscher, U}, title = {Sicherer Zustand in Prozessleittechnik und Medizintechnik Safe State in Process Control Engineering and Medical Engineering}, series = {Biomedizinische Technik; ISSN 0013-5585}, volume = {55}, journal = {Biomedizinische Technik; ISSN 0013-5585}, year = {2010}, language = {en} } @article{WernerStephanStraussetal.2010, author = {Werner, Korb and Stephan, M and Strauß, G and Stier, A and H{\"o}lscher, U}, title = {Gebrauchstauglichkeit im Produktentwicklungsprozess - Ergebnisse einer Umfrage bei Medizinger{\"a}teherstellern}, series = {Biomedizinische Technik}, volume = {55}, journal = {Biomedizinische Technik}, issn = {0013-5585}, doi = {10.1515/BMT.2010.283}, year = {2010}, language = {de} } @article{HoelscherLiuGruchmannetal.2009, author = {H{\"o}lscher, U. and Liu, L. and Gruchmann, T. and Pantiskas, C.}, title = {Cross-National and Cross-Cultural Design of Medical Devices}, series = {AAMI HE 75}, journal = {AAMI HE 75}, year = {2009}, language = {en} } @article{WieczoreckCrillyDixonetal.2009, author = {Wieczoreck, C. and Crilly, N. and Dixon, J. and H{\"o}lscher, U.}, title = {Design-phase-specific Selection of User Research Methods: Proceedings 43. Jahrestagung DGBMT}, series = {Biomedizinische Technik}, journal = {Biomedizinische Technik}, number = {54}, year = {2009}, language = {en} } @article{GrosseWentrupStierHoelscher2009, author = {Grosse-Wentrup, D. and Stier, A. and H{\"o}lscher, U.}, title = {Supporting Tool for Usability Specifications; Proceedings 43. Jahrestagung DGBMT 2009}, series = {Biomedizinische Technik}, journal = {Biomedizinische Technik}, number = {54}, year = {2009}, language = {en} }