@inproceedings{SuessKubowitschVerkerkeetal., author = {S{\"u}ß, Franz and Kubowitsch, Simone and Verkerke, Gijsbertus Jacob and Dendorfer, Sebastian}, title = {Investigation of cognitive stress induced changes in spinal disc forces due to altered kinematics and muscle activity}, series = {World Congress Biomechanics, Dublin, 2018}, booktitle = {World Congress Biomechanics, Dublin, 2018}, language = {en} } @inproceedings{KubowitschDendorfer, author = {Kubowitsch, Simone and Dendorfer, Sebastian}, title = {Psychologie und Biomechanik - Integrierte Betrachtung von Muskelrekrutierung}, series = {Jahrestagung der Deutschen Gesellschaft f{\"u}r Biofeedback e. V., Regensburg, 2018}, booktitle = {Jahrestagung der Deutschen Gesellschaft f{\"u}r Biofeedback e. V., Regensburg, 2018}, language = {de} } @misc{AurbachSpickaSuessetal., author = {Aurbach, Maximilian and Spicka, Jan and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Musculoskeletal modelling of the shoulder - effects on muscle recruitment and joint reaction force}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, journal = {European Society of Biomechanics meeting 2019, Vienna, Austria}, language = {en} } @misc{KubowitschSuessJansenetal., author = {Kubowitsch, Simone and S{\"u}ß, Franz and Jansen, Petra and Dendorfer, Sebastian}, title = {Effect of dual tasking on muscular imbalances}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, journal = {European Society of Biomechanics meeting 2019, Vienna, Austria}, language = {en} } @misc{EngelhardtMelznerHavelkovaetal., author = {Engelhardt, Lucas and Melzner, Maximilian and Havelkova, Linda and Fiala, Pavel and Rybarova, Martina and Christen, Patrik and Dendorfer, Sebastian and Simon, Ulrich}, title = {A new musculoskeletal AnyBody detailed hand model}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, journal = {European Society of Biomechanics meeting 2019, Vienna, Austria}, abstract = {The AnyBody™ Modeling System (AMS) [1], is an universally used musculoskeletal simulation software using inverse dynamics. Until now, no complete human hand model is known in the AMS. Also considering other musculoskeletal software platforms, just one detailed entire hand model is recently published [2] but is only based on one subject. The aim of this work is to implement a full detailed hand model for the AMS including all extrinsic and intrinsic muscles using data by the UWB gained through an anatomical study of ten cadaver hands.}, language = {en} } @inproceedings{SuessKubowitschRasmussenetal., author = {S{\"u}ß, Franz and Kubowitsch, Simone and Rasmussen, John and Verkerke, Gijsbertus Jacob and Dendorfer, Sebastian}, title = {The influence of cognitive stress on muscle activation and spinal disc load}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, booktitle = {European Society of Biomechanics meeting 2019, Vienna, Austria}, language = {en} } @misc{AuerNieblerEiglspergeretal., author = {Auer, Simon and Niebler, Michael and Eiglsperger, Josef and Kubowitsch, Simone and Renkawitz, Tobias and Achenbach, Leonard and Krutsch, Werner and Dendorfer, Sebastian}, title = {Cognitive stress increases muscle forces in dynamic football specific movements}, series = {European Society of Biomechanics meeting 2019, Vienna, Austria}, journal = {European Society of Biomechanics meeting 2019, Vienna, Austria}, language = {en} } @inproceedings{MelznerEngelhardtHavelkovaetal., author = {Melzner, Maximilian and Engelhardt, Lucas and Havelkova, Leonard and Simon, Ulrich and Dendorfer, Sebastian}, title = {A new musculoskeletal AnyBody detailed hand model validated by electromyography}, series = {16th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering (CMBBE) 2019, New York City, USA}, booktitle = {16th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering (CMBBE) 2019, New York City, USA}, abstract = {The AnyBody™ Modeling System (AMS) [1], is an universally used musculoskeletal simulation software using inverse dynamics. Until now, no complete human hand model is known in the AMS. Also considering other musculoskeletal software platforms, just one detailed entire hand model is recently published [2] but is only based on one subject. The aim of this work is to implement a full detailed hand model for the AMS including all extrinsic and intrinsic muscles using data by the UWB gained through an anatomical study of ten cadaver hands.}, language = {en} } @inproceedings{WulfLindnerStrahringeretal., author = {Wulf, Frederik and Lindner, Tobias and Strahringer, Susanne and Westner, Markus}, title = {IaaS, PaaS, or SaaS? The Why of Cloud Computing Delivery Model Selection}, series = {Proceedings of the 54th Hawaii International Conference on System Sciences, 2021}, booktitle = {Proceedings of the 54th Hawaii International Conference on System Sciences, 2021}, isbn = {978-0-9981331-4-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-7913}, pages = {6285 -- 6294}, abstract = {Most large-scale organizations adopted Cloud Computing (CC) on a company level in recent years. Managers now face the challenge to appropriately implement CC "operationally", i.e., for information systems (ISs). We refer to this as post-adoption, addressing the extent of technology usage after adoption. Specifically, managers need to choose among the CC delivery models Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-asa-Service (SaaS). We differentiate the determinants of this post-adoption decision for IaaS, PaaS, and SaaS. Based on this analysis, we derive criteria that guide managers' delivery model selection: Adopt 1) IaaS for ISs requiring flexibility and reduced time to market, 2) PaaS to access specialized resources, and 3) SaaS to focus on core competencies. Moreover, we analyze the impact on the CC strategy and postulate them as recommendations: I) acknowledge the interplay between governance and time-to-market, II) realize cost savings on company level, and III) consider strategically important ISs for CC.}, language = {en} } @misc{AurbachSuessDendorfer, author = {Aurbach, Maximilian and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {The impact of the hill type muscle model on the glenohumeral joint reaction force}, series = {16th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering (CMBBE) 2019, New York City, USA}, journal = {16th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering (CMBBE) 2019, New York City, USA}, language = {en} } @misc{Dendorfer, author = {Dendorfer, Sebastian}, title = {Virtuelle Modelle der oberen Extremit{\"a}t}, series = {22. Interdisziplin{\"a}res Symposium Medizin-Physiotherapie-Sportwissenschaften, 22.-23.11.2019, Regensburg, Germany}, journal = {22. Interdisziplin{\"a}res Symposium Medizin-Physiotherapie-Sportwissenschaften, 22.-23.11.2019, Regensburg, Germany}, language = {de} } @misc{Dendorfer, author = {Dendorfer, Sebastian}, title = {The influence of mental stress on the musculoskeletal system}, language = {en} } @misc{MelznerEngelhardtSuessetal., author = {Melzner, Maximilian and Engelhardt, Leonard and S{\"u}ß, Friedrich and Dendorfer, Sebastian}, title = {Sensitivity evaluation of a musculoskeletal hand model using Latin hypercube sampling}, series = {ESMAC 2020 Abstracts}, volume = {81}, journal = {ESMAC 2020 Abstracts}, number = {Suppl. 1}, publisher = {Elsevier}, doi = {10.1016/j.gaitpost.2020.08.008}, language = {en} } @article{AuerKrutschRenkawitzetal., author = {Auer, Simon and Krutsch, Werner and Renkawitz, Tobias and Kubowitsch, Simone and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Kognitiver Stress f{\"u}hrt zu unphysiologisch erh{\"o}hten Kniebelastungen im Profifußball}, series = {Sports Orthopaedics and Traumatology}, volume = {36}, journal = {Sports Orthopaedics and Traumatology}, number = {2}, publisher = {Elsevier}, doi = {10.1016/j.orthtr.2020.04.122}, pages = {202 -- 203}, language = {de} } @misc{AuerKrutschRenkawitzetal., author = {Auer, Simon and Krutsch, Werner and Renkawitz, Tobias and Kubowitsch, Simone and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Effect of mental demand on leg loading in highly dynamic motion}, series = {AnyBody online Webinar, Oct 2020}, journal = {AnyBody online Webinar, Oct 2020}, abstract = {Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Injuries to muscles of the thigh are common in amateur and professional football, representing almost a third of all injuries. These injuries occur primarily in non-contact situations and from overuse. They can lead to a range of costs, including financial costs associated with treatment as well as those associated with long-term recovery, and absence from training and/or competition. Further, there is a high risk of injury recurrence and subsequent injury.}, language = {en} } @misc{MelznerPfeiferAltetal., author = {Melzner, Maximilian and Pfeifer, Christian and Alt, V. and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {{\"A}nderung der Gelenkreaktionskraft bei Sch{\"a}digung des medialen Bandapparates im Ellenbogen}, series = {Zeitschrift fur Orthopadie und Unfallchirurgie}, volume = {158}, journal = {Zeitschrift fur Orthopadie und Unfallchirurgie}, number = {S01}, publisher = {Thieme}, doi = {10.1055/s-0040-1717270}, language = {de} } @inproceedings{Dendorfer, author = {Dendorfer, Sebastian}, title = {Biomechanical evaluation and optimisation of countermeasure exercises}, series = {ESA/ESTEC Bedrest Strategy Workshop, Noordwijk, NL, 2009}, booktitle = {ESA/ESTEC Bedrest Strategy Workshop, Noordwijk, NL, 2009}, language = {en} } @inproceedings{Dendorfer, author = {Dendorfer, Sebastian}, title = {How much iron to pump? The determination of muscle forces for activities of daily living}, series = {DGU, Berlin, 2008}, booktitle = {DGU, Berlin, 2008}, language = {en} } @inproceedings{HammerDendorfer, author = {Hammer, Joachim and Dendorfer, Sebastian}, title = {Cyclic loading and microstructure of cancellous bone}, series = {Journal of Biomechanics}, volume = {41}, booktitle = {Journal of Biomechanics}, number = {Suppl. 1, July 2008}, doi = {10.1016/S0021-9290(08)70409-3}, pages = {S410}, language = {en} } @misc{AppelhansKampmannMottoketal., author = {Appelhans, Marie-Luise and Kampmann, Matthias and Mottok, J{\"u}rgen and Riederer, Michael and Nagl, Klaus and Steffens, Oliver and D{\"u}nnweber, Jan and Wildgruber, Markus and Roth, Julius and Stadler, Timo and Palm, Christoph and Weiß, Martin Georg and Rochholz, Sandra and Bierl, Rudolf and Gschossmann, Andreas and Haug, Sonja and Schmidbauer, Simon and Koch, Anna and Westner, Markus and Bary, Benedikt von and Ellermeier, Andreas and V{\"o}gele, Daniel and Maiwald, Frederik and Hierl, Stefan and Schlamp, Matthias and Ehrlich, Ingo and Siegl, Marco and H{\"u}ntelmann, Sven and Wildfeuer, Matthias and Br{\"u}ckl, Oliver and Sterner, Michael and Hofrichter, Andreas and Eckert, Fabian and Bauer, Franz and Dawoud, Belal and Rabl, Hans-Peter and Gamisch, Bernd and Schmidt, Ottfried and Heberl, Michael and Thema, Martin and Mayer, Ulrike and Eller, Johannes and Sippenauer, Thomas and Adelt, Christian and Haslbeck, Matthias and Vogl, Bettina and Mauerer, Wolfgang and Ramsauer, Ralf and Lohmann, Daniel and Sax, Irmengard and Gabor, Thomas and Feld, Sebastian and Linnhoff-Popien, Claudia and Ławrowski, Robert Damian and Langer, Christoph and Schreiner, Rupert and Sellmair, Josef}, title = {Forschung 2019}, editor = {Baier, Wolfgang}, address = {Regensburg}, organization = {Ostbayerische Technische Hochschule Regensburg}, isbn = {978-3-9818209-7-3}, doi = {10.35096/othr/pub-789}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-7890}, pages = {72}, abstract = {Bericht mit Forschungsprojekten aus verschiedenen Bereichen der OTH Regensburg mit dem Schwerpunktthema "K{\"u}nstliche Intelligenz" und einem Gespr{\"a}ch zur "Medizin der Zukunft"}, subject = {Forschung}, language = {de} } @unpublished{BockWeiss, author = {Bock, Sebastian and Weiß, Martin Georg}, title = {Local Convergence of Adaptive Gradient Descent Optimizers}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-7546}, abstract = {Adaptive Moment Estimation (ADAM) is a very popular training algorithm for deep neural networks and belongs to the family of adaptive gradient descent optimizers. However to the best of the authors knowledge no complete convergence analysis exists for ADAM. The contribution of this paper is a method for the local convergence analysis in batch mode for a deterministic fixed training set, which gives necessary conditions for the hyperparameters of the ADAM algorithm. Due to the local nature of the arguments the objective function can be non-convex but must be at least twice continuously differentiable. Then we apply this procedure to other adaptive gradient descent algorithms and show for most of them local convergence with hyperparameter bounds.}, language = {en} } @inproceedings{DendorferKubowitsch, author = {Dendorfer, Sebastian and Kubowitsch, Simone}, title = {The interaction of mental stress and biomechanics}, series = {Health Technology Triangle, Weiden, 2016}, booktitle = {Health Technology Triangle, Weiden, 2016}, language = {en} } @article{WeberMerleNawabietal., author = {Weber, Markus and Merle, Christian and Nawabi, Danyal H. and Dendorfer, Sebastian and Grifka, Joachim and Renkawitz, Tobias}, title = {Inaccurate offset restoration in total hip arthroplasty results in reduced range of motion}, series = {Scientific Reports}, volume = {10}, journal = {Scientific Reports}, number = {13208}, publisher = {Nature}, doi = {10.1038/s41598-020-70059-1}, pages = {9}, abstract = {Offset restoration in total hip arthroplasty (THA) is associated with postoperative range of motion (ROM) and gait kinematics. We aimed to research into the impact of high offset (HO) and standard stems on postoperative ROM. 121 patients received cementless THA through a minimally-invasive anterolateral approach. A 360° hip ROM analysis software calculated impingement-free hip movement based on postoperative 3D-CTs compared to ROM values necessary for activities of daily living (ADL). The same model was then run a second time after changing the stem geometry between standard and HO configuration with the implants in the same position. HO stems showed higher ROM for all directions between 4.6 and 8.9° (p < 0.001) compared with standard stems but with high interindividual variability. In the subgroup with HO stems for intraoperative offset restoration, the increase in ROM was even higher for all ROM directions with values between 6.1 and 14.4° (p < 0.001) compared to offset underrestoration with standard stems. Avoiding offset underrestoration resulted in a higher amount of patients of over 20\% for each ROM direction that fulfilled the criteria for ADL (p < 0.001). In contrast, in patients with standard stems for offset restoration ROM did increase but not clinically relevant by offset overcorrection for all directions between 3.1 and 6.1° (p < 0.001). Offset overcorrection by replacing standard with HO stems improved ROM for ADL in a low number of patients below 10\% (p > 0.03). Patient-individual restoration of offset is crucial for free ROM in THA. Both over and underrestoration of offset should be avoided.}, language = {en} } @article{AurbachŠpičkaSuessetal., author = {Aurbach, Maximilian and Špička, Jan and S{\"u}ß, Franz and Vychytil, J. and Havelkov{\´a}, Leonard and Ryba, T. and Dendorfer, Sebastian}, title = {Torus obstacle method as a wrapping approach of the deltoid muscle group for humeral abduction in musculoskeletal simulation}, series = {Journal of Biomechanics}, volume = {109}, journal = {Journal of Biomechanics}, number = {August}, publisher = {Elsevier}, doi = {10.1016/j.jbiomech.2020.109864}, abstract = {Musculoskeletal models of the shoulder complex are valuable research aids to investigate tears of the supraspinatus and the resulting mechanical impact during abduction of the humerus. One of the major contributors to this motion is the deltoid muscle group and for this, an accurate modeling of the lines of action is indispensable. The aim of this work was to utilize a torus obstacle wrapping approach for the deltoids of an existing shoulder model and assess the feasibility of the approach during humeral abduction. The shoulder model from the AnyBody™ modeling system was used as a platform. The size of the tori is based on a magnetic resonance imaging (MRI) approach and several kinematic couplings are implemented to determine the trajectories of the tori during abduction. To assess the model behavior, the moment arms of the virtual muscle elements and the resultant glenohumeral joint reaction force (GHJF) were compared with reference data from the literature during abduction of the humerus in the range 20°-120°. The root mean square error for the anterior, lateral and posterior part between the simulated muscle elements and reference data from the literature was 3.9, 1.7 and 5.8 mm, respectively. The largest deviation occurred on the outer elements of the muscle groups, with 12.6, 10.4 and 20.5 mm, respectively. During abduction, there is no overlapping of the muscle elements and these are in continuous contact with the torus obstacles, thus enabling a continuous force transmission. This results in a rising trend of the resultant GHJF. The torus obstacle approach as a wrapping method for the deltoid muscles provides a guided muscle pathing by simultaneously approximating the curvature of the deltoid muscle. The results from the comparison of the simulated moment arms and the resultant GHJF are in accordance with those in the literature in the range 20°-120° of abduction. Although this study shows the strength of the torus obstacle as a wrapping approach, the method of fitting the tori according to MRI data was not suitable. A cadaver study is recommended to better validate and mathematically describe the torus approach.}, language = {en} } @inproceedings{AuerKubowitschKrutschetal., author = {Auer, Simon and Kubowitsch, Simone and Krutsch, Werner and Renkawitz, Tobias and S{\"u}ß, Franz and Dendorfer, Sebastian}, title = {Effect of mental demand on knee forces in professional youth soccer players}, series = {ISBS Proceedings Archive}, volume = {38}, booktitle = {ISBS Proceedings Archive}, number = {1, Art. 28}, abstract = {Soccer is one of the most popular sports all around the world. It is an injurious type of sport with a focus on lower extremities and high psychological pressure during matches. The stressor is linked with injuries and an increased musculoskeletal loading. This study investigates the influence of cognitive stress on the load profile of the knee joint. Twelve professional youth soccer players performed highly dynamic runs with and without additional cognitive stress. The runs were analysed with a musculoskeletal simulation software. The data analysis shows no difference in knee joint reaction loading under additional mental stress compared to the baseline. Yet running times are significantly lower in the baseline. While there is no increase in the joint loads, the running times indicate an altered movement behaviour when the subjects are exposed to additional mental demand.}, subject = {Kniegelenk}, language = {en} } @incollection{Weber, author = {Weber, Karsten}, title = {Digitale Spaltung? Informationsgerechtigkeit!}, series = {Vernetzt gespalten. Der Digital Divide in ethischer Perspektive}, booktitle = {Vernetzt gespalten. Der Digital Divide in ethischer Perspektive}, editor = {Scheule, Rupert M. and Capurro, Rafael and Hausmanninger, Thomas}, publisher = {Fink}, address = {M{\"u}nchen}, pages = {115 -- 120}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Non-propriet{\"a}re Software und Geschenk{\"o}konomie: L{\"o}sungen f{\"u}r die digitale Spaltung?}, series = {Vernetzt gespalten. Der Digital Divide in ethischer Perspektive}, booktitle = {Vernetzt gespalten. Der Digital Divide in ethischer Perspektive}, editor = {Scheule, Rupert M. and Capurro, Rafael and Hausmanninger, Thomas}, publisher = {Fink}, address = {M{\"u}nchen}, pages = {189 -- 197}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Formen der Interdisziplinarit{\"a}t}, series = {Was sind Kulturwissenschaften? 13 Antworten}, booktitle = {Was sind Kulturwissenschaften? 13 Antworten}, editor = {Kittsteiner, H.D.}, publisher = {Wilhelm Fink}, address = {M{\"u}nchen}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Philosophische Grundlagen und m{\"o}gliche Entwicklungen der Open Source- und Free Software-Bewegung}, series = {Open Source Jahrbuch 2004. Zwischen Softwareentwicklung und Gesellschaftsmodell}, booktitle = {Open Source Jahrbuch 2004. Zwischen Softwareentwicklung und Gesellschaftsmodell}, editor = {Lutterbeck, Bernd and Gehring, Robert A.}, publisher = {Lehmanns Media}, address = {Berlin}, pages = {15 S.}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Der wissenschaftstheoretische Status von Simulationen}, series = {Wissenschaftstheorie in {\"O}konomie und Wirtschaftsinformatik. Theoriebildung und -bewertung, Ontologien, Wissensmanagement}, booktitle = {Wissenschaftstheorie in {\"O}konomie und Wirtschaftsinformatik. Theoriebildung und -bewertung, Ontologien, Wissensmanagement}, editor = {Frank, Ulrich}, publisher = {DUV}, address = {Wiesbaden}, doi = {10.1007/978-3-322-81127-1_9}, abstract = {Computersimulationen — hier wird h{\"a}ufig nur noch von Simulationen gesprochen — haben sich in vielen wissenschaftlichen und technischen Bereichen zu unverzichtbaren Werkzeugen f{\"u}r Forschung und Entwicklung entwickelt. Sie stellen ein m{\"a}chtiges Werkzeug zur Untersuchung von Abl{\"a}ufen in ganz verschiedenen Disziplinen dar — von der Kosmologie bis zur {\"O}konomie — und scheinen die Grenzen der Wissenschaft weiter hinauszuschieben. Allerdings muss konstatiert werden, dass die Verwendung von Simulationen im Forschungsprozess h{\"a}ufig unkritisch geschieht und wichtige wissenschaftstheoretische Einw{\"a}nde nicht beachtet werden. Diese sollen zun{\"a}chst allgemein dargestellt sowie kritisch diskutiert und danach Konsequenzen f{\"u}r die Wirtschaftsinformatik genannt werden*.}, subject = {Computersimulation}, language = {de} } @article{EbigboMendelRueckertetal., author = {Ebigbo, Alanna and Mendel, Robert and R{\"u}ckert, Tobias and Schuster, Laurin and Probst, Andreas and Manzeneder, Johannes and Prinz, Friederike and Mende, Matthias and Steinbr{\"u}ck, Ingo and Faiss, Siegbert and Rauber, David and Souza Jr., Luis Antonio de and Papa, Jo{\~a}o Paulo and Deprez, Pierre and Oyama, Tsuneo and Takahashi, Akiko and Seewald, Stefan and Sharma, Prateek and Byrne, Michael F. and Palm, Christoph and Messmann, Helmut}, title = {Endoscopic prediction of submucosal invasion in Barrett's cancer with the use of Artificial Intelligence: A pilot Study}, series = {Endoscopy}, volume = {53}, journal = {Endoscopy}, number = {09}, publisher = {Thieme}, address = {Stuttgart}, doi = {10.1055/a-1311-8570}, pages = {878 -- 883}, abstract = {Background and aims: The accurate differentiation between T1a and T1b Barrett's cancer has both therapeutic and prognostic implications but is challenging even for experienced physicians. We trained an Artificial Intelligence (AI) system on the basis of deep artificial neural networks (deep learning) to differentiate between T1a and T1b Barrett's cancer white-light images. Methods: Endoscopic images from three tertiary care centres in Germany were collected retrospectively. A deep learning system was trained and tested using the principles of cross-validation. A total of 230 white-light endoscopic images (108 T1a and 122 T1b) was evaluated with the AI-system. For comparison, the images were also classified by experts specialized in endoscopic diagnosis and treatment of Barrett's cancer. Results: The sensitivity, specificity, F1 and accuracy of the AI-system in the differentiation between T1a and T1b cancer lesions was 0.77, 0.64, 0.73 and 0.71, respectively. There was no statistically significant difference between the performance of the AI-system and that of human experts with sensitivity, specificity, F1 and accuracy of 0.63, 0.78, 0.67 and 0.70 respectively. Conclusion: This pilot study demonstrates the first multicenter application of an AI-based system in the prediction of submucosal invasion in endoscopic images of Barrett's cancer. AI scored equal to international experts in the field, but more work is necessary to improve the system and apply it to video sequences and in a real-life setting. Nevertheless, the correct prediction of submucosal invasion in Barret´s cancer remains challenging for both experts and AI.}, subject = {Maschinelles Lernen}, language = {en} } @article{HartmannWeihererSchiltzetal., author = {Hartmann, Robin and Weiherer, Maximilian and Schiltz, Daniel and Baringer, Magnus and Noisser, Vivien and H{\"o}sl, Vanessa and Eigenberger, Andreas and Seitz, Stefan and Palm, Christoph and Prantl, Lukas and Br{\´e}bant, Vanessa}, title = {New aspects in digital breast assessment: further refinement of a method for automated digital anthropometry}, series = {Archives of Gynecology and Obstetrics}, volume = {303}, journal = {Archives of Gynecology and Obstetrics}, publisher = {Springer Nature}, address = {Heidelberg}, issn = {1432-0711}, doi = {10.1007/s00404-020-05862-2}, pages = {721 -- 728}, abstract = {Purpose: In this trial, we used a previously developed prototype software to assess aesthetic results after reconstructive surgery for congenital breast asymmetry using automated anthropometry. To prove the consensus between the manual and automatic digital measurements, we evaluated the software by comparing the manual and automatic measurements of 46 breasts. Methods: Twenty-three patients who underwent reconstructive surgery for congenital breast asymmetry at our institution were examined and underwent 3D surface imaging. Per patient, 14 manual and 14 computer-based anthropometric measurements were obtained according to a standardized protocol. Manual and automatic measurements, as well as the previously proposed Symmetry Index (SI), were compared. Results: The Wilcoxon signed-rank test revealed no significant differences in six of the seven measurements between the automatic and manual assessments. The SI showed robust agreement between the automatic and manual methods. Conclusion: The present trial validates our method for digital anthropometry. Despite the discrepancy in one measurement, all remaining measurements, including the SI, showed high agreement between the manual and automatic methods. The proposed data bring us one step closer to the long-term goal of establishing robust instruments to evaluate the results of breast surgery.}, language = {en} } @misc{Rauch, type = {Master Thesis}, author = {Rauch, Johannes}, title = {Entwicklung eines Regelverfahrens f{\"u}r einen optimierten und zentralen Blindleistungsabruf zur Beeinflussung des Blindleistungshaushalts von Mittelspannungsnetzen unter Einhaltung von Netzrestriktionen}, doi = {10.35096/othr/pub-659}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-6595}, school = {Ostbayerische Technische Hochschule Regensburg}, pages = {115}, abstract = {Die Energiewende f{\"u}hrt zu neuen Herausforderungen f{\"u}r Verteilungsnetzbetreiber hinsichtlich der Er-bringung von Systemdienstleistungen, der Integration weiterer Erzeugungsanlagen und Lasten sowie der Gew{\"a}hrleistung einer hohen Versorgungssicherheit und normgerechten Spannungsqualit{\"a}t. Die De-ckung der auftretenden Blindleistungsbedarfe seitens der Netzbetriebsmittel, Verbraucher und Erzeu-gungsanlagen gewinnt durch den Wegfall der Großkraftwerke f{\"u}r Netzbetreiber zunehmend an Bedeu-tung. Das Projekt SyNErgie besch{\"a}ftigt sich diesbez{\"u}glich mit der Entwicklung neuartiger Blindleis-tungsmanagementsysteme f{\"u}r Mittelspannungsnetze. Ziel ist es, das bisher ungenutzte, freie Blindleis-tungspotential betrieblicher Kompensationsanlagen und dezentraler Erzeugungsanlagen (allgemein: Blindleistungsquellen) zu nutzen, um die Blindleistungs{\"a}nderungsf{\"a}higkeit eines Verteilungsnetzes zu erh{\"o}hen. Diese Arbeit besch{\"a}ftigt sich mit der Entwicklung eines zentralen Blindleistungsregelsystems, bei dem Blindleistungsquellen auf Basis von „Optimal Power Flow"-Berechnungen {\"u}ber eine zentrale Recheninstanz angesteuert werden. Zum Einsatz kommt dabei ein Optimierungsalgorithmus, der auf Basis des aktuellen Netzzustandes (Spannungs- und Auslastungsreserven) und des aktuellen Blindleis-tungspotentials der Blindleistungsquellen einen bedarfsoptimalen Abruf koordiniert. Das zentrale Re-gelverfahren wird in Netzmodellen verschiedenartiger Mittelspannungsnetzgruppen und unterschiedli-cher Art und Anzahl von Blindleistungsquellen angewendet sowie im Hinblick auf variierende Zielvor-gaben und Randbedingungen evaluiert und diskutiert.}, language = {de} } @book{Galka, author = {Galka, Stefan}, title = {AutoStore - was Nutzer {\"u}ber das System berichten k{\"o}nnen}, address = {Regensburg}, isbn = {978-3-9818209-9-7}, doi = {10.35096/othr/pub-646}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-6463}, publisher = {Ostbayerische Technische Hochschule Regensburg}, subject = {Kleinteil}, language = {de} } @article{ArribasAntonelliFrazzonietal., author = {Arribas, Julia and Antonelli, Giulio and Frazzoni, Leonardo and Fuccio, Lorenzo and Ebigbo, Alanna and van der Sommen, Fons and Ghatwary, Noha and Palm, Christoph and Coimbra, Miguel and Renna, Francesco and Bergman, Jacques J.G.H.M. and Sharma, Prateek and Messmann, Helmut and Hassan, Cesare and Dinis-Ribeiro, Mario J.}, title = {Standalone performance of artificial intelligence for upper GI neoplasia: a meta-analysis}, series = {Gut}, volume = {70}, journal = {Gut}, number = {8}, publisher = {BMJ}, address = {London}, doi = {10.1136/gutjnl-2020-321922}, pages = {1458 -- 1468}, abstract = {Objective: Artificial intelligence (AI) may reduce underdiagnosed or overlooked upper GI (UGI) neoplastic and preneoplastic conditions, due to subtle appearance and low disease prevalence. Only disease-specific AI performances have been reported, generating uncertainty on its clinical value. Design: We searched PubMed, Embase and Scopus until July 2020, for studies on the diagnostic performance of AI in detection and characterisation of UGI lesions. Primary outcomes were pooled diagnostic accuracy, sensitivity and specificity of AI. Secondary outcomes were pooled positive (PPV) and negative (NPV) predictive values. We calculated pooled proportion rates (\%), designed summary receiving operating characteristic curves with respective area under the curves (AUCs) and performed metaregression and sensitivity analysis. Results: Overall, 19 studies on detection of oesophageal squamous cell neoplasia (ESCN) or Barrett's esophagus-related neoplasia (BERN) or gastric adenocarcinoma (GCA) were included with 218, 445, 453 patients and 7976, 2340, 13 562 images, respectively. AI-sensitivity/specificity/PPV/NPV/positive likelihood ratio/negative likelihood ratio for UGI neoplasia detection were 90\% (CI 85\% to 94\%)/89\% (CI 85\% to 92\%)/87\% (CI 83\% to 91\%)/91\% (CI 87\% to 94\%)/8.2 (CI 5.7 to 11.7)/0.111 (CI 0.071 to 0.175), respectively, with an overall AUC of 0.95 (CI 0.93 to 0.97). No difference in AI performance across ESCN, BERN and GCA was found, AUC being 0.94 (CI 0.52 to 0.99), 0.96 (CI 0.95 to 0.98), 0.93 (CI 0.83 to 0.99), respectively. Overall, study quality was low, with high risk of selection bias. No significant publication bias was found. Conclusion: We found a high overall AI accuracy for the diagnosis of any neoplastic lesion of the UGI tract that was independent of the underlying condition. This may be expected to substantially reduce the miss rate of precancerous lesions and early cancer when implemented in clinical practice.}, language = {en} } @incollection{Weber, author = {Weber, Karsten}, title = {Bottom-Up Mixed-Reality: Emergente Entwicklung, Unkontrollierbarkeit und soziale Konsequenzen}, series = {Be-greifbare Interaktionen - Der allgegenw{\"a}rtige Computer: Touchscreens, Wearables, Tangibles und Ubiquitous Computing}, booktitle = {Be-greifbare Interaktionen - Der allgegenw{\"a}rtige Computer: Touchscreens, Wearables, Tangibles und Ubiquitous Computing}, editor = {Robben, B. and Schelhowe, H.}, publisher = {Transcript}, address = {Bielefeld}, doi = {10.14361/transcript.9783839420058.347}, pages = {347 -- 366}, language = {de} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Evaluierung von Standardsoftware zur Abbildung von Gesch{\"a}ftsprozessen}, series = {Herausforderungen an die Wirtschaftsinformatik: Wissensmanagement, E-Business und ereignisgesteuerte Gesch{\"a}ftsprozesse in Echtzeit}, booktitle = {Herausforderungen an die Wirtschaftsinformatik: Wissensmanagement, E-Business und ereignisgesteuerte Gesch{\"a}ftsprozesse in Echtzeit}, editor = {Fuchs, Gerhard and M{\"u}ller, Christian and Ritz, Harald and Saint-Mont, Uwe}, publisher = {Verlag News \& Media}, address = {Berlin}, doi = {10.15771/978-3-936527-10-0}, pages = {52 -- 69}, language = {de} } @misc{Bast, type = {Master Thesis}, author = {Bast, Severin}, title = {Einflussfaktoren auf das Outsourcing der BIM Management Leistung}, doi = {10.35096/othr/pub-639}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-6397}, school = {Ostbayerische Technische Hochschule Regensburg}, abstract = {Deutschland weist im Industriel{\"a}nder-Vergleich eine außergew{\"o}hnliche wirtschaftliche Performance auf und z{\"a}hlt in diversen Wirtschaftssektoren als Vorreiter. Betrachtet man allerdings die digitale Wettbewerbsf{\"a}higkeit, so l{\"a}sst sich feststellen, dass deutsche Unternehmen nur wenig in digitale Technologien investieren und im OECD-Vergleich einen der letzten Pl{\"a}tze belegen (vgl. Deloitte, 2017, S. 30). Speziell der Bausektor weist hierbei großen Nachholbedarf auf, wie beispielsweise eine Studie von von Both aufzeigt. Von Both (2013) definiert die Implementierung der neuen Arbeitsmethodik f{\"u}r das digitale Bauen, das sog. Building Information Modeling (BIM), in sieben Phasen. W{\"a}hrend Großbritannien in der f{\"u}nften Phase „der Versuchsphase" ist und sich Korea sogar bereits in der letzten Phase „der Integrationsphase" befindet, akzeptiert Deutschland erst die neue Arbeitsmethodik (Phase 3) und beginnt die Notwendigkeit zu realisieren (Phase 4).}, subject = {Building Information Modeling}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Zivilgesellschaft und Medienethik}, series = {Medien- und Zivilgesellschaft}, booktitle = {Medien- und Zivilgesellschaft}, editor = {Filipović, Alexander and J{\"a}ckel, Michael and Schicha, Christian}, publisher = {Juventa}, address = {Weinheim}, pages = {5 -- 15}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Vom Nutzen und Schaden der Religion f{\"u}r freiheitliche Gesellschaften}, series = {Religion, Ethics and Public Education - Religion, Ethik und {\"o}ffentliche Bildung - Religia, etyka i edukacja publiczna}, booktitle = {Religion, Ethics and Public Education - Religion, Ethik und {\"o}ffentliche Bildung - Religia, etyka i edukacja publiczna}, number = {4}, editor = {Aleksandrowicz, Dariusz and Czapara, M.}, publisher = {Peter Lang}, address = {Frankfurt am main}, pages = {1 -- 22}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Aufgaben f{\"u}r eine globale Wissensgesellschaft oder "Welcome to the new IT?"}, series = {Wissensorganisation und Edutainment: Wissen im Spannungsfeld von Gesellschaft, Gestaltung und Industrie}, booktitle = {Wissensorganisation und Edutainment: Wissen im Spannungsfeld von Gesellschaft, Gestaltung und Industrie}, editor = {Lehner, C. and Ohly, Heinz Peter and Rahnstorf, G.}, publisher = {Ergon}, address = {W{\"u}rzburg}, pages = {12}, abstract = {Nicht nur in der wissenschaftlichen, sondern auch oder gerade in der {\"o}ffentlichen Diskussion wird viel von der „Wissensgesellschaft" gesprochen. Einmal davon abgesehen, dass dieser Ausdruck oftmals mit ganz verschiedenen Intentionen benutzt wird - so im Hinblick auf die Notwendigkeit, in der Arbeitswelt lebenslang zu lernen, auf die Wissensgeladenheit vieler neuer Produkte oder auf die Verlagerung von Bildungsprozessen von Schulen und Universit{\"a}ten ins Internet -, ist bei genauerer Betrachtung nicht klar, wo Wissensgesellschaften existieren, im Entstehen begriffen sind oder entstehen k{\"o}nnten, d. h. welche Gesellschaften den Transformationsprozess von der XYZ- zur Wissensgesellschaft in der Vergangenheit schon vollzogen haben, gerade vollziehen oder in Zukunft vollziehen werden. Es ist auch nicht klar, ob es nur eine oder viele Wissensgesellschaften gibt, geben soll oder geben wird. Schon aus diesen wenigen Bemerkungen wird ersichtlich, dass die Rede von der (globalen) Wissensgesellschaft {\"a}hnlich wie jene von der Globalisierung alles andere als klar ist. In einem {\"U}berblick soll im Folgenden deshalb versucht werden, diese Unklarheiten zumindest ein wenig zu beseitigen. Es wird dabei deutlich, dass sich selbst nur lokale Wissensgesellschaften im Grunde allenfalls in statu nascendi befinden und eine globale Wissensgesellschaft noch in weiter Ferne liegt oder gar eine nicht zu realisierende Utopie darstellt. Zun{\"a}chst wird der status quo beschrieben, also die große Ungleichheit in der M{\"o}glichkeit der Internetnutzung, global und auf das geografische Europa bezogen. Danach wird versucht, anzudeuten, welche Probleme gel{\"o}st werden m{\"u}ssten, damit diese Ungleichgewichtung abgebaut werden kann oder doch zumindest nicht noch gr{\"o}ßer wird. Zuletzt soll der Entwurf einiger Grunds{\"a}tze aufgezeigt werden, die f{\"u}r die Gestaltung lokaler Wissensgesellschaften handlungsleitend sein sollten und meines Erachtens notwendige Bedingungen der M{\"o}glichkeit sowohl lokaler als auch globaler Wissensgesellschaften darstellen. Der damit verbundene normative Anspruch wird dabei mit der Annahme begr{\"u}ndet, dass sich Informationen, Wissen und Bildung in der immer komplexer werdenden Welt zu Grundg{\"u}tern entwickelt haben, ohne die auf der personalen Ebene ein gelungenes Leben kaum noch zu f{\"u}hren ist und ohne die auf der Ebene der Gemeinwesen eine Entwicklung {\"o}konomisch benachteiligter L{\"a}nder und Regionen beeintr{\"a}chtigt oder gar verunm{\"o}glicht wird bzw. die schon hochindustrialisierten Staaten den bisher erreichten Lebensstandard nicht halten werden k{\"o}nnen.}, language = {de} } @incollection{WeberHaug, author = {Weber, Karsten and Haug, Sonja}, title = {Demographische Entwicklung, Rationierung und (intergenerationelle) Gerechtigkeit - ein Problemb{\"u}ndel der Gesundheitsversorgung}, series = {Medizinethik Bd. 5}, booktitle = {Medizinethik Bd. 5}, editor = {Joerden, Jan C. and Neumann, J.N.}, publisher = {Peter Lang}, address = {Frankfurt am Main}, pages = {70}, language = {de} } @inproceedings{WeberDrueeke, author = {Weber, Karsten and Dr{\"u}eke, Ricarda}, title = {Privacy, personal data protection, and the need to differentiate}, series = {Ethics of New Information Technology. Proceedings of the 6th International Conference of Computer Ethics: Philosophical Enquiries (CEPE2005)}, booktitle = {Ethics of New Information Technology. Proceedings of the 6th International Conference of Computer Ethics: Philosophical Enquiries (CEPE2005)}, editor = {Brey, Philip and Grodzinsky, F. and Introna, L.}, pages = {13}, abstract = {The coming years will be characterized by the development of mobile ICT that will enable con - sumers to use information and communication services everywhere and anytime. Technologies like GPRS, WLAN, or UMTS can be used stand-alone or in combination with other technologies like RFID or GPS to provide, for instance, location-aware services. Mobile ICT is to be expected to evolve to that what often is called Ambient Intelligence, Ubiquitous or Pervasive Computing. It is likely that such new technologies will affect personnel privacy because providing mobile ICT services inherits the identification and often the exact localization of users. In the following text we shall analyze possible threats of privacy. We will distinguish different dimensions or aspects of privacy to show how new technologies can affect them. After that, we shall argue that it is necessary to make a distinction of privacy and data protection: privacy primarily is a matter of social norms and data protection the realm of technical measurements. Additionally, we will provide some empirical evidence that users of the Internet make that distinction. Finally, we will claim that the right to privacy and privacy itself only can be protected if there are widely accepted social norms regarding privacy.}, language = {en} } @inproceedings{Weber, author = {Weber, Karsten}, title = {Computersimulationen im Entdeckungszusammenhang}, series = {Kreativit{\"a}t. Proceedings des XX. Deutschen Kongresses f{\"u}r Philosophie}, booktitle = {Kreativit{\"a}t. Proceedings des XX. Deutschen Kongresses f{\"u}r Philosophie}, editor = {Abel, G.}, publisher = {Universit{\"a}tsverlag der TU Berlin}, address = {Berlin}, pages = {8}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Der Preis der Informationsfreiheit}, series = {Wissen und Bildung in der modernen Gesellschaft}, booktitle = {Wissen und Bildung in der modernen Gesellschaft}, publisher = {Rosa-Luxemburg-Stiftung e.V.}, address = {Leipzig}, language = {de} } @incollection{WeberDrueekeSchulz, author = {Weber, Karsten and Dr{\"u}eke, Ricarda and Schulz, Axel}, title = {Mobiler Wissenszugang: Digital Rights Management vs. Privacy}, series = {Wissensorganisation und Verantwortung. Gesellschaftliche, {\"o}konomische und technische Aspekte}, booktitle = {Wissensorganisation und Verantwortung. Gesellschaftliche, {\"o}konomische und technische Aspekte}, editor = {Ohly, Heinz Peter and Sieglerschmidt, J. and Swertz, C.}, publisher = {Ergon}, address = {W{\"u}rzburg}, pages = {180 -- 193}, language = {de} } @incollection{Weber, author = {Weber, Karsten}, title = {Science Wars - Remarks from a Critical Rationalist's Point of View}, series = {Karl Popper: A Centenary Assessment. Volume II: Metaphysics and epistemology}, booktitle = {Karl Popper: A Centenary Assessment. Volume II: Metaphysics and epistemology}, editor = {Jarvie, Ian C. and Milford, Karl and Miller, David}, publisher = {Ashgate}, address = {Aldershot et al.}, pages = {95 -- 108}, abstract = {In this text I would like to make some remarks on the so called 'Science Wars' from a Critical Rationalist's point of view. First I will describe the beginning of this war, which was given public awareness by Alan Sokal in 1996 publishing his text Transgressing the Boundaries. Toward a transformative Hermeneutics of Quantum Gravity in the postmodernist journal Social Text. In 1997 Alan Sokal, together with Jean Bricmont, again attacked postmodernist and poststructuralist scholars with the book Impostures Intellectuelles. I will describe the aims of their book and in addition portray briefly the postmodernist relativistic epistemology. Since Sokal and Bricmont identify Critical Rationalism as a source of that relativism, I then will show possible reasons for this reproach. I will reject their critique, since it is based on false estimations about Critical Rationalism but I also will show that there are some good reasons to criticize Critical Rationalism. As a kind of conclusion I will argue that in the future it is necessary that Critical Rationalists will dispute more offensively against postmodernist thinking to prevent a deepening of the gap between the humanities and science and because science is an important means to the improvement of our society.}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {Mobile Access to Information: Some Questions}, series = {CSI Communications, Special Issue on "Information Ethics"}, journal = {CSI Communications, Special Issue on "Information Ethics"}, number = {6}, pages = {21 -- 22}, language = {en} } @article{WeberCapurro, author = {Weber, Karsten and Capurro, Rafael}, title = {Guest Editorial}, series = {CSI Communications, Special Issue on "Information Ethics"}, journal = {CSI Communications, Special Issue on "Information Ethics"}, number = {6}, pages = {3 -- 4}, language = {en} } @incollection{WeberAleksandrowicz, author = {Weber, Karsten and Aleksandrowicz, Dariusz}, title = {Kulturwissenschaften: auf dem Weg zu einer erneuten Spaltung der Wissenschaft?}, series = {Kulturwissenschaften im Blickfeld der Standortbestimmung, Legitimierung und Selbstkritik}, booktitle = {Kulturwissenschaften im Blickfeld der Standortbestimmung, Legitimierung und Selbstkritik}, editor = {Aleksandrowicz, Dariusz and Weber, Karsten}, publisher = {Frank \& Timme}, address = {Berlin}, pages = {45 -- 88}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Privatsph{\"a}re und Datenschutz in Europa}, series = {FIfF Kommunikation}, volume = {24}, journal = {FIfF Kommunikation}, number = {2}, pages = {26 -- 31}, abstract = {Die Nutzungspotentiale der Informations- und Kommunikationstechnologie stellen die Frage nach der Wahrung von Privatsph{\"a}re und Datenschutz. Gleichzeitig zeigen Erhebungen, dass ein großer Teil der EU-B{\"u}rger, selbst in als technikaffin geltenden L{\"a}ndern, große Skepsis in Bezug auf die Wahrung ihrer Privatsph{\"a}re hegt. Bei der Gestaltung von IuK-gest{\"u}tzten Ger{\"a}te und Dienstleistungen m{\"u}ssen daher solche {\"A}ngste beachtet werden, wenn sie auf dem Markt erfolgreich sein sollen. Dazu ist es jedoch zun{\"a}chst einmal notwendig, besser zu verstehen, was die Betroffenen eigentlich unter Privatsph{\"a}re begreifen}, language = {de} } @incollection{WeberDrueekeSchulz, author = {Weber, Karsten and Dr{\"u}eke, Ricarda and Schulz, Axel}, title = {Mobile ICT in public spaces and its impact on privacy}, series = {Societies and Cities in the Age of Instant Access}, volume = {88}, booktitle = {Societies and Cities in the Age of Instant Access}, editor = {Miller, Harvey J.}, publisher = {Springer}, address = {Berlin}, doi = {10.1007/1-4020-5427-0_13}, pages = {197 -- 208}, language = {en} }