@article{Olbertz2018,
  author    = {Olbertz, Klaus},
  title     = {Bindung des Betriebserwerbers an zuk{\"u}nftige Tariflohnerh{\"o}hungen : Auswirkungen eines Betriebs{\"u}bergangs auf Bezugnahmeklauseln in {\"u}bernommenen Arbeitsvertr{\"a}gen},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {39},
  publisher = {NWB-Verl.},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {2864 -- 2869},
  year      = {2018},
  language  = {de}
}
@article{Olbertz2018,
  author    = {Olbertz, Klaus},
  title     = {{\"U}berwachung von Arbeitnehmern als Ausdruck von Compliance - Grunds{\"a}tze sowie Zul{\"a}ssigkeit und Grenzen einzelner Maßnahmen},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {21},
  publisher = {NWB-Verl.},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {1547 -- 1555},
  year      = {2018},
  language  = {de}
}
@article{Olbertz2018,
  author    = {Olbertz, Klaus},
  title     = {Das rechtssichere Arbeitszeugnis - Erlaubte und nicht erlaubte Formulierungen und anderes Wissenswertes},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {12},
  publisher = {NWB-Verl.},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {802 -- 813},
  year      = {2018},
  language  = {de}
}
@article{Olbertz2016,
  author    = {Olbertz, Klaus},
  title     = {Bundesregierung beschließt Flexi-Rente},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {42},
  issn      = {1860-9449},
  pages     = {3145 -- 3147},
  year      = {2016},
  abstract  = {Das Bundeskabinett hat sich am 14.9.2016 mit der sog. Flexi-Rente befasst und eine sog. Formulierungshilfe verabschiedet, der ein aus den Regierungsfraktionen des Bundestages einzubringender entsprechender Gesetzesentwurf zur „Flexibilisierung des {\"U}bergangs vom Erwerbsleben in den Ruhestand und zur St{\"a}rkung von Pr{\"a}vention und Rehabilitation im Erwerbsleben (Flexirentengesetz)" folgen soll. Eine entsprechende Vorabfassung des Gesetzesentwurfs liegt bereits vor (BT-Drucks. 18/9787). Mit der Flexi-Rente sollen im Wesentlichen zwei Ziele erreicht werden: Das flexible Arbeiten bis zum Erreichen der Regelaltersgrenze soll gef{\"o}rdert und das Weiterarbeiten {\"u}ber die Regelaltersgrenze hinaus attraktiver gemacht werden. Hierf{\"u}r ist eine Reihe von gesetzlichen {\"A}nderungen geplant, insbesondere im SGB VI und SGB III. Teile des Gesetzes sollen schon zum 1.1.2017 in Kraft treten. Grund genug, sich bereits jetzt einen ersten {\"U}berblick {\"u}ber die geplanten Neuerungen zu verschaffen.},
  language  = {de}
}
@article{Olbertz2017,
  author    = {Olbertz, Klaus},
  title     = {Neuerungen beim Besch{\"a}ftigtendatenschutz durch die Neufassung des Bundesdatenschutzgesetzes - Unternehmen sollten Frist bis zum 25.5.2018 nutzen},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {32},
  publisher = {NWB-Verlag},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {2429 -- 2435},
  year      = {2017},
  language  = {de}
}
@article{OlbertzFahrig2012,
  author    = {Olbertz, Klaus and Fahrig, Stephan},
  title     = {Offshoring als Betriebs(teil){\"u}bergang gem{\"a}ß \S 613a BGB},
  series = {ZIP Zeitschrift f{\"u}r Wirtschaftsrecht},
  journal   = {ZIP Zeitschrift f{\"u}r Wirtschaftsrecht},
  number    = {42},
  publisher = {Verlag Dr. Otto Schmidt},
  address   = {K{\"o}ln},
  issn      = {0723-9416},
  pages     = {2045},
  year      = {2012},
  language  = {de}
}
@article{OlbertzGroth2016,
  author    = {Olbertz, Klaus and Groth, Alexandra},
  title     = {Arbeitnehmer{\"u}berlassung: Neue gesetzliche Spielregeln ab dem 1.1.2017},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {371 -- 374},
  year      = {2016},
  abstract  = {Die bereits mit Koalitionsvertrag vom 16.12.2013 in Aussicht genommene Neuregulierung der Leiharbeit steht nunmehr kurz bevor. Nach diversen Korrekturen des urspr{\"u}nglichen Referentenentwurfes des Bundesministeriums f{\"u}r Arbeit und Soziales liegt seit dem 20.7.2016 der endg{\"u}ltige Entwurf des Gesetzes zur {\"A}nderung des Arbeitnehmer{\"u}berlassungsgesetzes und anderer Gesetze vor (A{\"U}G-E). Die {\"A}nderungen sollen zum 1.1.2017 in Kraft treten. Von gr{\"o}ßeren {\"A}nderungen des Gesetzesentwurfs wird allgemein nicht mehr ausgegangen. F{\"u}r die betriebliche Praxis sollte dies Anlass sein, sich bereits jetzt mit den sich abzeichnenden wichtigsten Neuerungen vertraut zu machen und diese entsprechend umzusetzen, um nachteilige Konsequenzen zu vermeiden.},
  language  = {de}
}
@article{OlbertzGroth2017,
  author    = {Olbertz, Klaus and Groth, Alexandra},
  title     = {{\"A}nderungen durch das Flexirentengesetz - Neue Anreize zur Besch{\"a}ftigung von Rentnern},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {10},
  publisher = {NWB Verlag},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {738 -- 748},
  year      = {2017},
  language  = {de}
}
@article{OlbertzGroth2016,
  author    = {Olbertz, Klaus and Groth, Alexandra},
  title     = {Elektrofahrzeuge als Dienstfahrzeuge - Arbeitgeberseitige Gestellung von Elektromobilit{\"a}t und ihre arbeitsvertraglichen Gestaltungserfordernisse},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {50},
  issn      = {1860-9449},
  pages     = {3812},
  year      = {2016},
  abstract  = {Elektromobilit{\"a}t ist das Thema der Zukunft. Schon jetzt hat es sich die Bundesregierung zur Aufgabe gemacht, hierzulande bis 2030 den Absatz von Elektroautos kontinuierlich auf sechs Mio. Fahrzeuge zu steigern. Und auch die Nachfrage nach Elektrofahrr{\"a}dern steigt zunehmend. Vor allem der derzeit durch den Gesetzgeber gew{\"a}hrte Umweltbonus sowie weitere steuerliche Anreize machen den Einsatz von Elektroautos und -fahrr{\"a}dern als Dienstfahrzeuge auch f{\"u}r Arbeitgeber zunehmend attraktiv. Will der Arbeitgeber seinen Arbeitnehmern Elektrofahrzeuge {\"u}berlassen, stellt sich die Frage nach der Gestaltung der entsprechenden {\"U}berlassungsvertr{\"a}ge. Der nachfolgende Beitrag gibt hierzu einen {\"U}berblick und beinhaltet Formulierungshilfen f{\"u}r die Vertragsgestaltung.},
  language  = {de}
}
@article{OlbertzGroth2017,
  author    = {Olbertz, Klaus and Groth, Alexandra},
  title     = {Die Reform des Mutterschutzrechts - {\"U}berblick {\"u}ber die wesentlichen {\"A}nderungen},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {25},
  publisher = {NWB Verlag GmbH \& Co. KG},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {1883 -- 1891},
  year      = {2017},
  language  = {de}
}
@article{OlbertzKleinertz2010,
  author    = {Olbertz, Klaus and Kleinertz, Caroline},
  title     = {Urlaub, Feiertage und Krankheit - Kurzarbeit in Vollzug},
  series = {Arbeit und Arbeitsrecht : AuA},
  journal   = {Arbeit und Arbeitsrecht : AuA},
  number    = {6},
  publisher = {Huss Medien},
  address   = {Berlin},
  issn      = {0323-4568},
  pages     = {348 -- 351},
  year      = {2010},
  language  = {de}
}
@article{OlbertzMaevers2004,
  author    = {Olbertz, Klaus and M{\"a}vers, Gunther},
  title     = {Rechtzeitigkeit der Meldung nach \S\S 37 b, 140 SGB III},
  series = {Der Arbeits-Rechts-Berater : ArbRB},
  journal   = {Der Arbeits-Rechts-Berater : ArbRB},
  issn      = {1618-0143},
  pages     = {307},
  year      = {2004},
  language  = {de}
}
@article{OlbertzReinartz2008,
  author    = {Olbertz, Klaus and Reinartz, Oliver},
  title     = {Erweiterte Kampfrechte der Gewerkschaften - Was Arbeitgeber k{\"u}nftig beachten m{\"u}ssen},
  series = {Der Arbeits-Rechts-Berater : ArbRB},
  journal   = {Der Arbeits-Rechts-Berater : ArbRB},
  issn      = {1618-0143},
  pages     = {310},
  year      = {2008},
  language  = {de}
}
@article{OlbertzReinartz2008,
  author    = {Olbertz, Klaus and Reinartz, Oliver},
  title     = {Der Arbeitskampf im Ungleichgewicht: Rechtm{\"a}ßigkeit des Unterst{\"u}tzungsstreiks?},
  series = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern},
  journal   = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern},
  issn      = {0340-7918},
  pages     = {814},
  year      = {2008},
  language  = {de}
}
@article{OlbertzSturm2013,
  author    = {Olbertz, Klaus and Sturm, Nora},
  title     = {Arbeitsrecht in der Insolvenz - Was gilt, wenn nichts mehr geht?},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {45},
  publisher = {NWB Verlag},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {3552 -- 3559},
  year      = {2013},
  language  = {de}
}
@article{OlbertzSturm2015,
  author    = {Olbertz, Klaus and Sturm, Nora},
  title     = {R{\"u}ckzahlungsvereinbarungen f{\"u}r Fortbildungskosten - welche Spielregeln gelten?},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  issn      = {1868-1816},
  pages     = {510 -- 513},
  year      = {2015},
  language  = {de}
}
@article{OlbertzThiergart2010,
  author    = {Olbertz, Klaus and Thiergart, Kirsten},
  title     = {B{\"o}rsengang leicht gemacht? Gesellschafts- und arbeitsrechtliche Aspekte bei {\"U}bernahme und Verschmelzung eines Zielunternehmens auf die SPAC in der Rechtsform der SE},
  series = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern},
  journal   = {Betriebs-Berater: BB ; Recht, Wirtschaft, Steuern},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  issn      = {0340-7918},
  pages     = {1547},
  year      = {2010},
  abstract  = {Die SPAC-SE ist b{\"o}rsenf{\"a}hig und damit eine f{\"u}r eine SPAC grunds{\"a}tzlich geeignete Rechtsform. Die Tatsache, dass es sich hierbei (zun{\"a}chst) um eine leere, arbeitnehmerlose H{\"u}lle handelt, {\"a}ndert hieran nichts. Die Gr{\"u}ndung einer solchen Vorrats-SE ist trotz fehlender Arbeitnehmerbeteiligung unter teleologischer Reduktion von Art. 12 II SE-VO zul{\"a}ssig. Im Gegenzug muss die Arbeitnehmerbeteiligung gemaß \S 18 III SEBG analog nachgeholt werden, wenn das sp{\"a}ter erworbene Zielunternehmen auf die SPAC-SE verschmolzen werden soll. Aus gesellschaftsrechtlicher Sicht ist zu beachten, dass die SPAC-SE mit Sitz in Deutschland, welche auch den deutschen, aktienrechtlichen Bestimmungen unterliegt, nur bedingt f{\"u}r eine SPAC geeignet erscheint. Das deutsche Aktienrecht enth{\"a}lt strenge Regelungen, die der f{\"u}r eine SPAC-SE erforderlichen Flexibilit{\"a}t entgegenstehen k{\"o}nnen. Dies gilt insbesondere f{\"u}r das Erfordernis der Zustimmung der Hauptversammlung zur Akquisition des Zielunternehmens, die R{\"u}ckzahlung des Treuhandverm{\"o}gens an Aktion{\"a}re, die der Akquisition nicht zugestimmt haben und die Liquidation der SPAC-SE im Falle des Scheiterns des Erwerbs des Zielobjektes.},
  language  = {de}
}
@inproceedings{OlderogMohrBegingetal.2021,
  author    = {Olderog, M. and Mohr, P. and Beging, Stefan and Tsoumpas, C. and Ziemons, Karl},
  title     = {Simulation study on the role of tissue-scattered events in improving sensitivity for a compact time of flight compton positron emission tomograph},
  series = {2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)},
  booktitle = {2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)},
  publisher = {IEEE},
  address   = {New York, NY},
  isbn      = {978-1-7281-7693-2},
  doi       = {10.1109/NSS/MIC42677.2020.9507901},
  pages     = {4 Seiten},
  year      = {2021},
  abstract  = {In positron emission tomography improving time, energy and spatial detector resolutions and using Compton kinematics introduces the possibility to reconstruct a radioactivity distribution image from scatter coincidences, thereby enhancing image quality. The number of single scattered coincidences alone is in the same order of magnitude as true coincidences. In this work, a compact Compton camera module based on monolithic scintillation material is investigated as a detector ring module. The detector interactions are simulated with Monte Carlo package GATE. The scattering angle inside the tissue is derived from the energy of the scattered photon, which results in a set of possible scattering trajectories or broken line of response. The Compton kinematics collimation reduces the number of solutions. Additionally, the time of flight information helps localize the position of the annihilation. One of the questions of this investigation is related to how the energy, spatial and temporal resolutions help confine the possible annihilation volume. A comparison of currently technically feasible detector resolutions (under laboratory conditions) demonstrates the influence on this annihilation volume and shows that energy and coincidence time resolution have a significant impact. An enhancement of the latter from 400 ps to 100 ps leads to a smaller annihilation volume of around 50\%, while a change of the energy resolution in the absorber layer from 12\% to 4.5\% results in a reduction of 60\%. The inclusion of single tissue-scattered data has the potential to increase the sensitivity of a scanner by a factor of 2 to 3 times. The concept can be further optimized and extended for multiple scatter coincidences and subsequently validated by a reconstruction algorithm.},
  language  = {en}
}
@book{Olk1980,
  author    = {Olk, Ulrich},
  title     = {Entwicklung eines Struktur- und Ablaufmodells f{\"u}r industrialisiertes Bauen},
  pages     = {III, 198 S. : graph. Darst.},
  year      = {1980},
  language  = {de}
}
@article{Olk2006,
  author    = {Olk, Ulrich},
  title     = {Arbeitsvorbereitung und Ablaufplanung},
  series = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  journal   = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  publisher = {Teubner},
  address   = {Wiesbaden},
  isbn      = {3-519-65220-X},
  pages     = {547 -- 580},
  year      = {2006},
  language  = {de}
}
@article{Olk2006,
  author    = {Olk, Ulrich},
  title     = {Unfallverh{\"u}tung},
  series = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  journal   = {Zahlentafeln f{\"u}r den Baubetrieb / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.]. 7., vollst. {\"u}berarb. Aufl.},
  publisher = {Teubner},
  address   = {Wiesbaden},
  isbn      = {3-519-65220-X},
  pages     = {833 -- 929},
  year      = {2006},
  language  = {de}
}
@article{Olk2006,
  author    = {Olk, Ulrich},
  title     = {Arbeitsvorbereitung und Ablaufplanung},
  series = {Beispiele f{\"u}r die Baubetriebspraxis / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.].},
  journal   = {Beispiele f{\"u}r die Baubetriebspraxis / Hoffmann, Manfred ; Kuhlmann, Willy [Hrsg.].},
  publisher = {Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-8351-0002-2},
  pages     = {63 -- 88},
  year      = {2006},
  language  = {de}
}
@book{OlkBauer1979,
  author    = {Olk, Ulrich and Bauer, Hermann},
  title     = {Entwicklung von Kriterien f{\"u}r den optimalen Ablauf aller Teilvorg{\"a}nge des industrialisierten Bauens : Forschungsbericht / Hermann Bauer ; Ulrich Olk},
  publisher = {Lehrstuhl f{\"u}r Baubetrieb und Baumaschinen, Univ.},
  address   = {Dortmund},
  pages     = {Getr. Z{\"a}hlung},
  year      = {1979},
  language  = {de}
}
@book{OlkBauer1983,
  author    = {Olk, Ulrich and Bauer, Hermann},
  title     = {Sicherheitstechnische Anforderungen beim Ablauf von Hochbauvorhaben / H. Bauer ; U. Olk},
  publisher = {Wirtschaftsverl. NW, Verl. f{\"u}r neue Wiss.},
  address   = {Bremerhaven},
  isbn      = {3-88314-324-3},
  pages     = {III, 102 S. : Ill., graph. Darst.},
  year      = {1983},
  language  = {de}
}
@article{OosterhuisOehlschlaegerBergetal.2011,
  author    = {Oosterhuis, Koen and {\"O}hlschl{\"a}ger, Peter and Berg, Joost H. van den and Toebes, Mireille and Gomez, Raquel and Schumacher, Ton N. and Haanen, John B.},
  title     = {Preclinical development of highly effective and safe DNA vaccines directed against HPV 16 E6 and E7},
  series = {International Journal of Cancer},
  volume    = {129},
  journal   = {International Journal of Cancer},
  number    = {2},
  publisher = {Wiley},
  address   = {Weinheim},
  isbn      = {1097-0215},
  pages     = {397 -- 406},
  year      = {2011},
  language  = {en}
}
@article{OrtnerHauserSchmadereretal.2019,
  author    = {Ortner, Marion and Hauser, Christine and Schmaderer, Christoph and Muggenthaler, Claudia and Hapfelmeier, Alexander and Sorg, Christian and Diehl-Schmid, Janine and Kurz, Alexander and F{\"o}rstl, Hans and Ikenberg, Benno and Kotliar, Konstantin and Holger, Poppert and Grimmer, Timo},
  title     = {Decreased vascular pulsatility in Alzheimer's disease dementia measured by transcranial color-coded duplex sonography},
  series = {Neuropsychiatric disease and treatment},
  journal   = {Neuropsychiatric disease and treatment},
  number    = {15},
  publisher = {Dove Medical Press},
  address   = {Albany, Auckland},
  issn      = {1178-2021},
  doi       = {10.2147/NDT.S225754},
  pages     = {3487 -- 3499},
  year      = {2019},
  abstract  = {Purpose: Impaired paravascular drainage of β-Amyloid (Aβ) has been proposed as a contributing cause for sporadic Alzheimer's disease (AD), as decreased cerebral blood vessel pulsatility and subsequently reduced propulsion in this pathway could lead to the accumulation and deposition of Aβ in the brain. Therefore, we hypothesized that there is an increased impairment in pulsatility across AD spectrum. Patients and Methods: Using transcranial color-coded duplex sonography (TCCS) the resistance and pulsatility index (RI; PI) of the middle cerebral artery (MCA) in healthy controls (HC, n=14) and patients with AD dementia (ADD, n=12) were measured. In a second step, we extended the sample by adding patients with mild cognitive impairment (MCI) stratified by the presence (MCI-AD, n=8) or absence of biomarkers (MCI-nonAD, n=8) indicative for underlying AD pathology, and compared RI and PI across the groups. To control for atherosclerosis as a confounder, we measured the arteriolar-venular-ratio of retinal vessels. Results: Left and right RI (p=0.020; p=0.027) and left PI (p=0.034) differed between HC and ADD controlled for atherosclerosis with AUCs of 0.776, 0.763, and 0.718, respectively. The RI and PI of MCI-AD tended towards ADD, of MCI-nonAD towards HC, respectively. RIs and PIs were associated with disease severity (p=0.010, p=0.023). Conclusion: Our results strengthen the hypothesis that impaired pulsatility could cause impaired amyloid clearance from the brain and thereby might contribute to the development of AD. However, further studies considering other factors possibly influencing amyloid clearance as well as larger sample sizes are needed.},
  language  = {en}
}
@article{OrzadaMaderwaldPoseretal.2012,
  author    = {Orzada, S. and Maderwald, S. and Poser, B. A. and Johst, S. and Kannengiesser, S. and Ladd, M. E. and Bitz, Andreas},
  title     = {Time-interleaved acquisition of modes: an analysis of SAR and image contrast implications},
  series = {Magnetic Resonance in Medicine},
  volume    = {67},
  journal   = {Magnetic Resonance in Medicine},
  number    = {4},
  publisher = {Wiley-Liss},
  address   = {New York},
  issn      = {1522-2594},
  doi       = {10.1002/mrm.23081},
  pages     = {1033 -- 1041},
  year      = {2012},
  abstract  = {s the magnetic field strength and therefore the operational frequency in MRI are increased, the radiofrequency wavelength approaches the size of the human head/body, resulting in wave effects which cause signal decreases and dropouts. Especially, whole-body imaging at 7 T and higher is therefore challenging. Recently, an acquisition scheme called time-interleaved acquisition of modes has been proposed to tackle the inhomogeneity problems in high-field MRI. The basic premise is to excite two (or more) different Burn:x-wiley:07403194:media:MRM23081:tex2gif-stack-1 modes using static radiofrequency shimming in an interleaved acquisition, where the complementary radiofrequency patterns of the two modes can be exploited to improve overall signal homogeneity. In this work, the impact of time-interleaved acquisition of mode on image contrast as well as on time-averaged specific absorption rate is addressed in detail. Time-interleaved acquisition of mode is superior in Burn:x-wiley:07403194:media:MRM23081:tex2gif-stack-2 homogeneity compared with conventional radiofrequency shimming while being highly specific absorption rate efficient. Time-interleaved acquisition of modes can enable almost homogeneous high-field imaging throughout the entire field of view in PD, T2, and T2*-weighted imaging and, if a specified homogeneity criterion is met, in T1-weighted imaging as well.},
  language  = {en}
}
@article{OrzadaBitzJohstetal.2017,
  author    = {Orzada, Stephan and Bitz, Andreas and Johst, S{\"o}ren and Gratz, Marcel and V{\"o}lker, Maximilian N. and Kraff, Oliver and Abuelhaija, Ashraf and Fiedler, Thomas M. and Solbach, Klaus and Quick, Harald H. and Ladd, Mark E.},
  title     = {Analysis of an integrated 8-Channel Tx/Rx body array for use as a body coil in 7-Tesla MRI},
  series = {Frontiers in Physics},
  volume    = {5},
  journal   = {Frontiers in Physics},
  number    = {Jun},
  issn      = {2296-424X},
  doi       = {10.3389/fphy.2017.00017},
  year      = {2017},
  language  = {en}
}
@article{OrzadaBitzSchaeferetal.2011,
  author    = {Orzada, Stephan and Bitz, Andreas and Sch{\"a}fer, Lena C. and Ladd, Susanne C. and Ladd, Mark E. and Maderwald, Stefan},
  title     = {Open design eight-channel transmit/receive coil for high-resolution and real-time ankle imaging at 7 T},
  series = {Medical Physics},
  volume    = {38},
  journal   = {Medical Physics},
  number    = {3},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {2473-4209},
  doi       = {10.1118/1.3553399},
  pages     = {1162 -- 1167},
  year      = {2011},
  abstract  = {Purpose: At 1.5 T, real-time MRI of joint movement has been shown to be feasible. However, 7 T, provides higher SNR and thus an improved potential for parallel imaging acceleration. The purpose of this work was to build an open, U-shaped eight-channel transmit/receive microstrip coil for 7 T MRI to enable high-resolution and real-time imaging of the moving ankle joint. Methods: A U-shaped eight-channel transmit/receive array for the human ankle was built.urn:x-wiley:00942405:mp3399:equation:mp3399-math-0001-parameters and urn:x-wiley:00942405:mp3399:equation:mp3399-math-0002-factor were measured. SAR calculations of different ankle postures were performed to ensure patient safety. Inhomogeneities in the transmit field consequent to the open design were compensated for by the use of static RF shimming. High-resolution and real-time imaging was performed in human volunteers. Results: The presented array showed good performance with regard to patient comfort and image quality. High acceleration factors of up to 4 are feasible without visible acceleration artifacts. Reasonable image homogeneity was achieved with RF shimming. Conclusions: Open, noncylindrical designs for transmit/receive coils are practical at 7 T and real-time imaging of the moving joint is feasible with the presented coil design.},
  language  = {en}
}
@article{OrzadaFiedlerBitzetal.2020,
  author    = {Orzada, Stephan and Fiedler, Thomas M. and Bitz, Andreas and Ladd, Mark E. and Quick, Harald H.},
  title     = {Local SAR compression with overestimation control to reduce maximum relative SAR overestimation and improve multi-channel RF array performance},
  series = {Magnetic Resonance Materials in Physics, Biology and Medicine},
  journal   = {Magnetic Resonance Materials in Physics, Biology and Medicine},
  number    = {34 (2021)},
  publisher = {Springer},
  address   = {Heidelberg},
  isbn      = {1352-8661},
  doi       = {10.1007/s10334-020-00890-0},
  pages     = {153 -- 164},
  year      = {2020},
  abstract  = {Objective In local SAR compression algorithms, the overestimation is generally not linearly dependent on actual local SAR. This can lead to large relative overestimation at low actual SAR values, unnecessarily constraining transmit array performance. Method Two strategies are proposed to reduce maximum relative overestimation for a given number of VOPs. The first strategy uses an overestimation matrix that roughly approximates actual local SAR; the second strategy uses a small set of pre-calculated VOPs as the overestimation term for the compression. Result Comparison with a previous method shows that for a given maximum relative overestimation the number of VOPs can be reduced by around 20\% at the cost of a higher absolute overestimation at high actual local SAR values. Conclusion The proposed strategies outperform a previously published strategy and can improve the SAR compression where maximum relative overestimation constrains the performance of parallel transmission.},
  language  = {en}
}
@article{OrzadaJohstMaderwaldetal.2013,
  author    = {Orzada, Stephan and Johst, S{\"o}ren and Maderwald, Stefan and Bitz, Andreas and Solbach, Klaus and Ladd, Mark E.},
  title     = {Mitigation of B1(+) inhomogeneity on single-channel transmit systems with TIAMO},
  series = {Magnetic Resonance in Medicine},
  volume    = {70},
  journal   = {Magnetic Resonance in Medicine},
  number    = {1},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1522-2594},
  doi       = {10.1002/mrm.24453},
  pages     = {290 -- 294},
  year      = {2013},
  language  = {en}
}
@article{OrzadaLaddBitz2016,
  author    = {Orzada, Stephan and Ladd, Mark E. and Bitz, Andreas},
  title     = {A method to approximate maximum local SAR in multichannel transmit MR systems without transmit phase information},
  series = {Magnetic Resonance in Medicine},
  volume    = {78},
  journal   = {Magnetic Resonance in Medicine},
  number    = {2},
  publisher = {International Society for Magnetic Resonance in Medicine},
  issn      = {1522-2594},
  doi       = {10.1002/mrm.26398},
  pages     = {805 -- 811},
  year      = {2016},
  abstract  = {Purpose To calculate local specific absorption rate (SAR) correctly, both the amplitude and phase of the signal in each transmit channel have to be known. In this work, we propose a method to derive a conservative upper bound for the local SAR, with a reasonable safety margin without knowledge of the transmit phases of the channels. Methods The proposed method uses virtual observation points (VOPs). Correction factors are calculated for each set of VOPs that prevent underestimation of local SAR when the VOPs are applied with the correct amplitudes but fixed phases. Results The proposed method proved to be superior to the worst-case calculation based on the maximum eigenvalue of the VOPs. The mean overestimation for six coil setups could be reduced, whereas no underestimation of the maximum local SAR occurred. In the best investigated case, the overestimation could be reduced from a factor of 3.3 to a factor of 1.7. Conclusion The upper bound for the local SAR calculated with the proposed method allows a fast estimation of the local SAR based on power measurements in the transmit channels and facilitates SAR monitoring in systems that do not have the capability to monitor transmit phases},
  language  = {en}
}
@article{OrzadaMaderwaldPoseretal.2010,
  author    = {Orzada, Stephan and Maderwald, Stefan and Poser, Benedikt Andreas and Bitz, Andreas and Quick, Harald H. and Ladd, Mark E.},
  title     = {RF excitation using time interleaved acquisition of modes (TIAMO) to address B1 inhomogeneity in high-field MRI},
  series = {Magnetic Resonance in Medicine},
  volume    = {64},
  journal   = {Magnetic Resonance in Medicine},
  number    = {2},
  publisher = {Wiley-Liss},
  address   = {New York},
  issn      = {1522-2594},
  doi       = {10.1002/mrm.22527},
  pages     = {327 -- 333},
  year      = {2010},
  abstract  = {As the field strength and, therefore, the operational frequency in MRI is increased, the wavelength approaches the size of the human head/body, resulting in wave effects, which cause signal decreases and dropouts. Several multichannel approaches have been proposed to try to tackle these problems, including RF shimming, where each element in an array is driven by its own amplifier and modulated with a certain (constant) amplitude and phase relative to the other elements, and Transmit SENSE, where spatially tailored RF pulses are used. In this article, a relatively inexpensive and easy to use imaging scheme for 7 Tesla imaging is proposed to mitigate signal voids due to B1 field inhomogeneity. Two time-interleaved images are acquired using a different excitation mode for each. By forming virtual receive elements, both images are reconstructed together using GRAPPA to achieve a more homogeneous image, with only small SNR and SAR penalty in head and body imaging at 7 Tesla.},
  language  = {en}
}
@article{OrzadaSolbachGratzetal.2019,
  author    = {Orzada, Stephan and Solbach, Klaus and Gratz, Marcel and Brunheim, Sascha and Fiedler, Thomas M. and Johst, S{\"o}ren and Bitz, Andreas and Shooshtary, Samaneh and Abuelhaija, Ashraf and Voelker, Maximilian N. and Rietsch, Stefan H. G. and Kraff, Oliver and Maderwald, Stefan and Fl{\"o}ser, Martina and Oehmingen, Mark and Quick, Harald H. and Ladd, Mark E.},
  title     = {A 32-channel parallel transmit system add-on for 7T MRI},
  series = {Plos one},
  journal   = {Plos one},
  doi       = {10.1371/journal.pone.0222452},
  year      = {2019},
  language  = {en}
}
@incollection{OsterhageBialonskiStanieketal.2008,
  author    = {Osterhage, Hannes and Bialonski, Stephan and Staniek, Matth{\"a}us and Schindler, Kaspar and Wagner, Tobias and Elger, Christian E. and Lehnertz, Klaus},
  title     = {Bivariate and multivariate time series analysis techniques and their potential impact for seizure prediction},
  series = {Seizure Prediction in Epilepsy: From Basic Mechanisms to Clinical Applications},
  booktitle = {Seizure Prediction in Epilepsy: From Basic Mechanisms to Clinical Applications},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  isbn      = {978-3-527-62519-2},
  doi       = {10.1002/9783527625192.ch15},
  pages     = {189 -- 208},
  year      = {2008},
  language  = {en}
}
@inproceedings{OstkottePetersHueningetal.2022,
  author    = {Ostkotte, Sebastian and Peters, Constantin and H{\"u}ning, Felix and Bragard, Michael},
  title     = {Design, implementation and verification of an rotational incremental position encoder based on the magnetic Wiegand effect},
  series = {2022 ELEKTRO (ELEKTRO)},
  booktitle = {2022 ELEKTRO (ELEKTRO)},
  publisher = {IEEE},
  isbn      = {978-1-6654-6726-1},
  issn      = {2691-0616},
  doi       = {10.1109/ELEKTRO53996.2022.9803477},
  pages     = {6 Seiten},
  year      = {2022},
  abstract  = {This paper covers the use of the magnetic Wiegand effect to design an innovative incremental encoder. First, a theoretical design is given, followed by an estimation of the achievable accuracy and an optimization in open-loop operation. Finally, a successful experimental verification is presented. For this purpose, a permanent magnet synchronous machine is controlled in a field-oriented manner, using the angle information of the prototype.},
  language  = {en}
}
@inproceedings{OttenGerhardsSchleseretal.2019,
  author    = {Otten, Christian and Gerhards, Benjamin and Schleser, Markus and Schwarz, A. and Gebhardt, Andreas},
  title     = {Innovative Laserschweißtechnologie f{\"u}r additiv gefertigte Bauteile},
  series = {Große Schweißtechnische Tagung},
  booktitle = {Große Schweißtechnische Tagung},
  publisher = {DVS-Media},
  address   = {D{\"u}sseldorf},
  isbn      = {978-3-96144-066-5},
  pages     = {150 -- 157},
  year      = {2019},
  language  = {de}
}
@inproceedings{OttenSchmidWeber2015,
  author    = {Otten, D. and Schmid, M. and Weber, Tobias},
  title     = {Advances In Sheet Metal-Forming: Reduction Of Tooling Cost By Methodical Optimization},
  series = {Proceedings of SAMPE Europe Conference, Amiens , France},
  booktitle = {Proceedings of SAMPE Europe Conference, Amiens , France},
  year      = {2015},
  language  = {en}
}
@inproceedings{OttenSchmidtWeber2016,
  author    = {Otten, D. and Schmidt, M. and Weber, Tobias},
  title     = {Advances in Determination of Material Parameters for Functional Simulations Based on Process Simulations},
  series = {SAMPE Europe Conference 16 Liege},
  booktitle = {SAMPE Europe Conference 16 Liege},
  isbn      = {978-1-5108-3800-0},
  pages     = {570 -- 577},
  year      = {2016},
  language  = {en}
}
@article{OttenWeberArent2018,
  author    = {Otten, Dennis and Weber, Tobias and Arent, Jan-Christoph},
  title     = {Manufacturing Process Simulation - On Its Way to Industrial Application},
  series = {International Journal of Aviation, Aeronautics, and Aerospace},
  volume    = {5},
  journal   = {International Journal of Aviation, Aeronautics, and Aerospace},
  number    = {2},
  publisher = {Embry-Riddle Aeronautical University},
  address   = {Daytona Beach, Fla.},
  issn      = {2374-6793},
  doi       = {10.15394/ijaaa.2018.1217},
  year      = {2018},
  abstract  = {Manufacturing process simulation (MPS) has become more and more important for aviation and the automobile industry. A highly competitive market requires the use of high performance metals and composite materials in combination with reduced manufacturing cost and time as well as a minimization of the time to market for a new product. However, the use of such materials is expensive and requires sophisticated manufacturing processes. An experience based process and tooling design followed by a lengthy trial-and-error optimization is just not contemporary anymore. Instead, a tooling design process aided by simulation is used more often. This paper provides an overview of the capabilities of MPS in the fields of sheet metal forming and prepreg autoclave manufacturing of composite parts summarizing the resulting benefits for tooling design and manufacturing engineering. The simulation technology is explained briefly in order to show several simplification and optimization techniques for developing industrialized simulation approaches. Small case studies provide examples of an efficient application on an industrial scale.},
  language  = {en}
}
@masterthesis{Outkina2023,
  type      = {Bachelor Thesis},
  author    = {Outkina, Ioulia},
  title     = {Kassandra : wetterbedingte Extremereignisse werden zunehmend die neue Realit{\"a}t bestimmen},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {253 Seiten},
  year      = {2023},
  abstract  = {Wetterbedingte Extremereignisse nehmen mit dem Klimawandel in vielen Regionen der Welt an Intensit{\"a}t und H{\"a}ufigkeit zu. Immer wieder unterstreichen tragische Krisenvorf{\"a}lle die Notwendigkeit der Aufkl{\"a}rung im Nachgang. Doch ausgerechnet wenn sich Leute {\"u}ber eins der aktuellsten und schwerwiegendsten Themen unserer heutigen Zeit informieren wollen, wird es daf{\"u}r keinen konsistenten Kanal in Deutschland geben. Kassandra bietet die M{\"o}glichkeit, sich verst{\"a}ndlich mit den Ereignissen und Missst{\"a}nden sachlich im Krisenbereich auseinanderzusetzen. Transparenz und Seriosit{\"a}t sind Schwerpunkte im qualitativ hochwertigen Bereich, die dabei von Wichtigkeit sind. Mit den Prinzipien des investigativen Journalismus schafft Kassandra als Onlineformat einen Denkanstoß, wie im Bereich der Krisenkommunikation eine Verbesserung stattfinden kann.},
  language  = {de}
}
@article{OverduinBlomeHoell2007,
  author    = {Overduin, James and Blome, Hans-Joachim and Hoell, Josef},
  title     = {Wolfgang Priester: from the big bounce to the Lambda-dominated universe},
  series = {Naturwissenschaften},
  volume    = {94},
  journal   = {Naturwissenschaften},
  number    = {6},
  isbn      = {0028-1042},
  pages     = {417 -- 429},
  year      = {2007},
  language  = {en}
}
@article{OssmannHattrupBroeck2003,
  author    = {Oßmann, Martin and Hattrup, C. and Broeck, H. W. van der},
  title     = {Fast estimation techniques for digital control of resonant converters / Hattrup, C.; van der Broeck, H.W.; Ossmann, M.;},
  series = {IEEE Transaction on Power Electronics. 18 (2003), H. 1},
  journal   = {IEEE Transaction on Power Electronics. 18 (2003), H. 1},
  isbn      = {0885-8993},
  pages     = {365 -- 372},
  year      = {2003},
  language  = {en}
}
@article{OssmannKazay2000,
  author    = {Oßmann, Martin and Kazay, B.},
  title     = {Simple circuit provides high-side current sensing / Ossmann, M ; Kazay, B.},
  series = {EDN. 45 (2000), H. 21},
  journal   = {EDN. 45 (2000), H. 21},
  isbn      = {0012-7515},
  pages     = {200 -- 200},
  year      = {2000},
  language  = {en}
}
@article{OssmannKazay1999,
  author    = {Oßmann, Martin and Kazay, B.},
  title     = {Single mu C pin makes half-duplex RS-232C / Ossmann, M},
  series = {EDN. 44 (1999), H. 16},
  journal   = {EDN. 44 (1999), H. 16},
  isbn      = {0012-7515},
  pages     = {118},
  year      = {1999},
  language  = {en}
}
@article{PaczkowskiWeissbeckerSchoeningetal.2011,
  author    = {Paczkowski, Sebastian and Weißbecker, Bernhard and Sch{\"o}ning, Michael Josef and Sch{\"u}tz, Stefan},
  title     = {Biosensors on the Basis of Insect Olfaction},
  series = {Insect biotechnology / Andreas Vilcinskas, ed.},
  journal   = {Insect biotechnology / Andreas Vilcinskas, ed.},
  publisher = {Springer},
  address   = {Dordrecht [u.a.]},
  isbn      = {978-90-481-9640-1},
  pages     = {225 -- 240},
  year      = {2011},
  language  = {en}
}
@inproceedings{PakPiegelerFeldmannetal.2006,
  author    = {Pak, Daniel and Piegeler, D. and Feldmann, Markus and Schleser, Markus and Dilthey, Ulrich},
  title     = {Hybrid joints of textile reinforced concrete parts - designed for assembly},
  series = {Textile reinforced concrete : proceedings of the 1. International RILEM Conference, held at the RWTH Aachen, September 6/7, 2006. (RILEM proceedings ; 50)},
  booktitle = {Textile reinforced concrete : proceedings of the 1. International RILEM Conference, held at the RWTH Aachen, September 6/7, 2006. (RILEM proceedings ; 50)},
  editor    = {Hegger, Josef},
  publisher = {RILEM Publ.},
  address   = {Bagneux},
  organization    = {International Conference on Textile Reinforced Concrete <1, 2006, Aachen>},
  isbn      = {2-912143-97-7},
  pages     = {181 -- 190},
  year      = {2006},
  language  = {en}
}
@masterthesis{Palm2023,
  type      = {Bachelor Thesis},
  author    = {Palm, Kevin John},
  title     = {Viva sin Aqua : Konzeption einer Kampagne zum virtuellen Wasserbedarf},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {80 Seiten},
  year      = {2023},
  abstract  = {Den aktuellen Zustand unserer Welt positiv zu beeinflussen, ist ein {\"u}bergeordnetes Ziel, welches nur kollektiv als Gesellschaft erreicht werden kann. Das Einsparen von Ressourcen ist ein leichter Weg f{\"u}r jede einzelne Person, um ihren Beitrag f{\"u}r dieses Ziel zu leisten. Doch wie bewegt man die Bev{\"o}lkerung zum Sparen? Und was soll eingespart werden? Die Kampagne "Viva sin Agua" sensibilisiert f{\"u}r die Ressource Wasser und nutzt dabei den {\"o}ffentlichen Raum. Aufgekl{\"a}rt wird {\"u}ber das sogenannte virtuelle Wasser. Dieses f{\"a}llt in teilweise extremen Mengen f{\"u}r die Produktion jeglicher Konsumwaren an. Das Ziel der Kampagne ist das Kennzeichnen dieses Wasserverbrauchs direkt am Produkt {\"u}ber eigene Labels. Dadurch soll ein Bewusstsein f{\"u}r den kritischen Kontext geschaffen und das allgemeine Konsumverhalten nachhaltig ver{\"a}ndert werden.},
  language  = {de}
}
@article{PalmerLindemann2003,
  author    = {Palmer, J. W. and Lindemann, Markus},
  title     = {Business models and market mechanisms : evaluating efficiency in consumer electronic markets},
  series = {Data base and advanced information systems. Bd. 34 (2003), H. 2},
  journal   = {Data base and advanced information systems. Bd. 34 (2003), H. 2},
  issn      = {0105-9912},
  pages     = {23 -- 38},
  year      = {2003},
  language  = {en}
}
@article{PancContiuBocanetetal.2019,
  author    = {Panc, Nicolae and Contiu, Glad and Bocanet, Vlad and Thurn, Laura and Sabau, Emilia},
  title     = {The influence of cutting technology on surface wear hardness},
  series = {Academic Journal of Manufacturing Engineering},
  volume    = {17},
  journal   = {Academic Journal of Manufacturing Engineering},
  number    = {3},
  issn      = {1583-7904},
  pages     = {205 -- 210},
  year      = {2019},
  language  = {en}
}