@incollection{Dachwald2010,
  author    = {Dachwald, Bernd},
  title     = {Solar sail dynamics and control},
  series = {Encyclopedia of Aerospace Engineering},
  booktitle = {Encyclopedia of Aerospace Engineering},
  publisher = {Wiley},
  address   = {Hoboken},
  doi       = {10.1002/9780470686652.eae292},
  year      = {2010},
  abstract  = {Solar sails are large and lightweight reflective structures that are propelled by solar radiation pressure. This chapter covers their orbital and attitude dynamics and control. First, the advantages and limitations of solar sails are discussed and their history and development status is outlined. Because the dynamics of solar sails is governed by the (thermo-)optical properties of the sail film, the basic solar radiation pressure force models have to be described and compared before parameters to measure solar sail performance can be defined. The next part covers the orbital dynamics of solar sails for heliocentric motion, planetocentric motion, and motion at Lagrangian equilibrium points. Afterwards, some advanced solar radiation pressure force models are described, which allow to quantify the thrust force on solar sails of arbitrary shape, the effects of temperature, of light incidence angle, of surface roughness, and the effects of optical degradation of the sail film in the space environment. The orbital motion of a solar sail is strongly coupled to its rotational motion, so that the attitude control of these soft and flexible structures is very challenging, especially for planetocentric orbits that require fast attitude maneuvers. Finally, some potential attitude control methods are sketched and selection criteria are given.},
  language  = {en}
}
@incollection{DiekmannEggert2021,
  author    = {Diekmann, Julian and Eggert, Mathias},
  title     = {Is a Progressive Web App an Alternative for Native App Development?},
  series = {3. Wissenschaftsforum: Digitale Transformation (WiFo21) (Lecture Notes in Informatics ; P-319)},
  booktitle = {3. Wissenschaftsforum: Digitale Transformation (WiFo21) (Lecture Notes in Informatics ; P-319)},
  publisher = {Gesellschaft f{\"u}r Informatik},
  address   = {Darmstadt},
  isbn      = {978-3-88579-713-5},
  pages     = {35 -- 48},
  year      = {2021},
  abstract  = {The existence of several mobile operating systems, such as Android and iOS, is a challenge for developers because the individual platforms are not compatible with each other and require separate app developments. For this reason, cross-platform approaches have become popular but lack in cloning the native behavior of the different operating systems. Out of the plenty cross-platform approaches, the progressive web app (PWA) approach is perceived as promising but needs further investigation. Therefore, the paper at hand aims at investigating whether PWAs are a suitable alternative for native apps by developing a PWA clone of an existing app. Two surveys are conducted in which potential users test and evaluate the PWA prototype with regard to its usability. The survey results indicate that PWAs have great potential, but cannot be treated as a general alternative to native apps. For guiding developers when and how to use PWAs, four design guidelines for the development of PWA-based apps are derived based on the results.},
  language  = {en}
}
@incollection{GollandSchneidereit2018,
  author    = {Golland, Alexander and Schneidereit, Peter},
  title     = {Rechtliche Rahmenbedingungen des Identit{\"a}tsmangements im Cloud Computing},
  series = {Identit{\"a}tsmanagement Im Cloud Computing : Evaluation {\"o}konomischer und Rechtlicher Rahmenbedingungen},
  booktitle = {Identit{\"a}tsmanagement Im Cloud Computing : Evaluation {\"o}konomischer und Rechtlicher Rahmenbedingungen},
  editor    = {Borges, Georg and Werners, Brigitte},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-662-55584-2},
  doi       = {10.1007/978-3-662-55584-2_4},
  pages     = {53 -- 104},
  year      = {2018},
  abstract  = {Cloud Computing wirft in zahlreichen Rechtsbereichen neuartige juristische Fragestellungen auf. Ziel der Darstellung der rechtlichen Rahmenbedingungen ist, die das Identit{\"a}tsmanagement in der Cloud betreffenden Rechtsgrundlagen aus den unterschiedlichen Rechtsgebieten vorzustellen und einzuordnen, bevor im Rahmen des sechsten Kapitels die Darstellung der hieraus resultierenden Verpflichtungen in ihrer konkreten Form erfolgt.},
  language  = {de}
}
@incollection{GollandBaumHammingeretal.2018,
  author    = {Golland, Alexander and Baum, Michael and Hamminger, Alexander and Olbertz, Klaus},
  title     = {Ein {\"U}berblick: Umsetzung der Datenschutz-Grundverordnung},
  series = {Das neue Datenschutzrecht in der Praxis des Steuerberaters Beitragssammlung},
  booktitle = {Das neue Datenschutzrecht in der Praxis des Steuerberaters Beitragssammlung},
  publisher = {NWB Verlag},
  address   = {Herne},
  isbn      = {978-3-482-67271-2},
  pages     = {8 -- 14},
  year      = {2018},
  abstract  = {Datenschutz und der 25.5.2018, wie ein Damoklesschwert scheinen beide Begriffe zurzeit im Raum zu stehe. Jeder weiß oder sollte zumindest um das Inkrafttreten der europ{\"a}ischen DSGVO am 25.5.2018 wissen. Viel wurde {\"u}ber wesentliche Neuerungen im Datenschutzrecht berichtet. Nicht zuletzt {\"u}ber gesteigerte organisatorische Anforderungen, Dokumentationspflichten und drohende Bußgelder. Doch was bedeuten diese Neuerungen ganz konkret f{\"u}r die Praxis des Steuerberaters? Anders als man vermuten k{\"o}nnte, werden die datenschutzrechtlichen Neuerungen nicht nur im Bereich der Kanzleiorganisation relevant. Auch im Steuerverwaltungsverfahren sieht sich der Steuerberater datenschutzrechtlichen Fragestellungen gegen{\"u}ber, bspw. dann, wenn die Finanzbeh{\"o}rden bei der Verarbeitung der personenbezogenen Daten des Mandanten gegen die DSGVO verstoßen. Gleiches gilt in Bereichen des Besch{\"a}ftigtendatenschutzes. Sowohl der Kanzleiinhaber selbst, als auch seine Arbeitgeber-Mandanten haben die Vorschriften des Besch{\"a}ftigtendatenschutzes einzuhalten. Der Steuerberater ben{\"o}tigt datenschutzrechtliches Know How, welches unmittelbar seine t{\"a}gliche Praxis betrifft. Andernfalls besteht das Risiko, dass dieser mit mehr Fragen, als Antworten zur{\"u}ck bleibt.},
  language  = {de}
}
@incollection{HoffschmidtAlexopoulosRauetal.2022,
  author    = {Hoffschmidt, Bernhard and Alexopoulos, Spiros and Rau, Christoph and Sattler, Johannes, Christoph and Anthrakidis, Anette and Teixeira Boura, Cristiano Jos{\´e} and O'Connor, B. and Chico Caminos, R.A. and Rend{\´o}n, C. and Hilger, P.},
  title     = {Concentrating solar power},
  series = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications},
  booktitle = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {978-0-12-819734-9},
  pages     = {670 -- 724},
  year      = {2022},
  abstract  = {The focus of this chapter is the production of power and the use of the heat produced from concentrated solar thermal power (CSP) systems. The chapter starts with the general theoretical principles of concentrating systems including the description of the concentration ratio, the energy and mass balance. The power conversion systems is the main part where solar-only operation and the increase in operational hours. Solar-only operation include the use of steam turbines, gas turbines, organic Rankine cycles and solar dishes. The operational hours can be increased with hybridization and with storage. Another important topic is the cogeneration where solar cooling, desalination and of heat usage is described. Many examples of commercial CSP power plants as well as research facilities from the past as well as current installed and in operation are described in detail. The chapter closes with economic and environmental aspects and with the future potential of the development of CSP around the world.},
  language  = {en}
}
@incollection{HoffschmidtAlexopoulosGoettscheetal.2022,
  author    = {Hoffschmidt, Bernhard and Alexopoulos, Spiros and G{\"o}ttsche, Joachim and Sauerborn, Markus and Kaufhold, O.},
  title     = {High Concentration Solar Collectors},
  series = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications},
  booktitle = {Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {978-0-12-819734-9},
  doi       = {10.1016/B978-0-12-819727-1.00058-3},
  pages     = {198 -- 245},
  year      = {2022},
  abstract  = {Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system. For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems. For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this article, different criteria for the choice of technology are analyzed in detail.},
  language  = {en}
}
@incollection{Fissabre2022,
  author    = {Fissabre, Anke},
  title     = {kirchen-bauhaus? - Die Kunstgewerbeschule in Aachen unter Rudolf Schwarz},
  series = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932},
  booktitle = {Zwischen den Zeiten - Besatzung und Aufbruch in Aachen, 1919-1932},
  editor    = {Soldwisch, Ines and Schmitz, Stefan},
  publisher = {Aachener Karnevalsverein (AKV)},
  address   = {Aachen},
  isbn      = {978-3-9825016-0-4},
  pages     = {54 -- 65},
  year      = {2022},
  language  = {de}
}
@incollection{Czarnecki2018,
  author    = {Czarnecki, Christian},
  title     = {Establishment of a central process governance organization combined with operational process improvements : Insights from a BPM Project at a leading telecommunications operator in the Middle East},
  series = {Business process management cases : digital innovation and business transformation in practice},
  booktitle = {Business process management cases : digital innovation and business transformation in practice},
  editor    = {vom Brocke, Jan and Mendling, Jan},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-319-58306-8},
  doi       = {10.1007/978-3-319-58307-5},
  pages     = {57 -- 76},
  year      = {2018},
  abstract  = {Because of customer churn, strong competition, and operational inefficiencies, the telecommunications operator ME Telco (fictitious name due to confidentiality) launched a strategic transformation program that included a Business Process Management (BPM) project. Major problems were silo-oriented process management and missing cross-functional transparency. Process improvements were not consistently planned and aligned with corporate targets. Measurable inefficiencies were observed on an operational level, e.g., high lead times and reassignment rates of the incident management process.},
  language  = {en}
}
@incollection{BensbergCzarneckiGrob2022,
  author    = {Bensberg, Frank and Czarnecki, Christian and Grob, Heinz Lothar},
  title     = {Wirtschaftlichkeitsbewertung von Smart Services mit vollst{\"a}ndigen Finanzpl{\"a}nen},
  series = {Smart Services: Band 1: Konzepte - Methoden - Prozesse},
  booktitle = {Smart Services: Band 1: Konzepte - Methoden - Prozesse},
  editor    = {Bruhn, Manfred and Hadwich, Karsten},
  publisher = {Springer Gabler},
  address   = {Wiesbaden},
  isbn      = {978-3-658-37344-3 (Online)},
  doi       = {10.1007/978-3-658-37344-3_6},
  pages     = {225 -- 251},
  year      = {2022},
  abstract  = {Dieser Beitrag stellt einen Bewertungsrahmen f{\"u}r Smart Services vor, der auf dem Konzept vollst{\"a}ndiger Finanzpl{\"a}ne (VOFI) basiert. Zun{\"a}chst wird eine IoT-Architektur f{\"u}r Smart Services eingef{\"u}hrt, die die Grundlage f{\"u}r deren Betrachtung aus Sicht der Unternehmensplanung liefert. Hierauf aufbauend wird ein Bewertungsrahmen f{\"u}r die finanzplanorientierte Wirtschaftlichkeitsbewertung von Smart Services geschaffen, mit dem die relevanten Zahlungsfolgen differenziert erfasst werden. Mithilfe des entwickelten VOFI-Systems wird anschließend aufgezeigt, wie mithilfe einer Risikoanalyse die Unsicherheit von Modellparametern ber{\"u}cksichtigt werden kann.},
  language  = {de}
}
@incollection{WeberBomholtButenweg2022,
  author    = {Weber, Felix and Bomholt, Frederik and Butenweg, Christoph},
  title     = {Erdbeben- und Schwingungsschutz von Bauwerken},
  series = {2023 BetonKalender: Wasserundurchl{\"a}ssiger Beton, Br{\"u}ckenbau},
  booktitle = {2023 BetonKalender: Wasserundurchl{\"a}ssiger Beton, Br{\"u}ckenbau},
  editor    = {Bergmeister, Konrad and Fingerloos, Frank and W{\"o}rner, Johann-Dietrich},
  publisher = {Ernst \& Sohn},
  address   = {Berlin},
  isbn      = {9783433611180},
  doi       = {10.1002/9783433611180.ch16},
  pages     = {779 -- 859},
  year      = {2022},
  abstract  = {Dieser Beitrag beschreibt die herk{\"o}mmlichen Maßnahmen wie die Kapazit{\"a}tsbemessung der Tragwerksstruktur, die Isolation des Bauwerks mittels Basisisolatoren, die D{\"a}mpfungserh{\"o}hung der Struktur mittels Inter-Story-D{\"a}mpfern und die Schwingungsreduktion mittels Schwingungstilgern gegen Einwirkungen durch Erdbeben, Wind, Verkehr und Personen auf die Bauwerke. Erg{\"a}nzend wird die erdbebengerechte Auslegung und Isolation von nichttragenden Bauteilen behandelt. F{\"u}r die betrachteten Systeme werden die Bewegungsdifferenzialgleichungen unter Ber{\"u}cksichtigung der wesentlichen Nichtlinearit{\"a}ten angegeben. Die vorgestellten Weiterentwicklungen in den Bereichen der Basisisolatoren, D{\"a}mpfern und Schwingungstilgern zeigen, dass das modellbasierte Design mittels Simulation ein sehr effektives, {\"o}konomisches und dank der heutigen Computerleistung auch zeiteffizientes Werkzeug darstellt.},
  language  = {de}
}