@inproceedings{LauxGotterNeef2019, author = {Laux, Christoph and Gotter, Andreas and Neef, Matthias}, title = {Experimental investigation of a low pressure steam Rankine cycle for waste heat utilization of internal combustion engines}, series = {Proceedings of the 5th International Seminar on ORC Power Systems}, booktitle = {Proceedings of the 5th International Seminar on ORC Power Systems}, publisher = {The National Technical University of Athens (NTUA)}, address = {Athens}, isbn = {978-90-9032038-0}, year = {2019}, abstract = {High heat losses via exhaust gas and coolant in internal combustion engines (ICE) are the basis for numerous investigations regarding downstream processes for power generation. The most promising concepts are Organic Rankine Cycles (ORC) and Steam Rankine Cycles (SRC). In previous work of the Center of Innovative Energy Systems, D{\"u}sseldorf (Germany), the technical and economic feasibility of a low pressure SRC has been investigated and the advantages in comparison to organic Rankine cycles are highlighted. A distinctive feature of the cycle is the use of the ICE coolant heat for evaporation, which limits the cycles maximum steam pressure to values below atmospheric pressure. This work presents first results of a test rig with data reconciliation according to DIN 2048 to validate the simulation results and design calculations. As a basis for the experimental investigations, a gas fired CHP plant was selected. The design of the test rig is optimized for the operation in the laboratory, where the coolant heat is emulated by a tempering device and the exhaust heat of the CHP plant is emulated by a gas burner. With the designed test rig, it is possible to control the volume flow and the temperatures of the coolant and exhaust gas, so that different load conditions of the gas fired CHP plant can be investigated. For initial tests, the turbine in the SRC is replaced by a throttle to achieve the pressure drop of the turbine. The experimental results show, that the exhaust and coolant heat of a 36 kWel CHP plant can be emulated and the performance expectations of the cycle can be met in stable steady-state conditions. Based on the measurement results and the turbine design calculations an electric power output of the cycle of 3.8 kW will be possible, which results in a cycle efficiency of about 6.5 \% and an increase of the electrical power output of the CHP plant of about 10 \%. The results show that the plant concept is technically feasible and, with further optimization, also represents an alternative to ORC plants in terms of increasing the efficiency of a cogeneration plant.}, language = {en} } @article{BaierNeef2019, author = {Baier, Andr{\´e} and Neef, Matthias}, title = {Studierende lehren und lernen sozial-{\"o}kologische Verantwortung}, series = {Die Neue Hochschule}, volume = {60}, journal = {Die Neue Hochschule}, number = {5}, organization = {Hochschullehrerbund - Bundesvereinigung - e.V. (hlb)}, pages = {8 -- 11}, year = {2019}, language = {de} } @article{Marmann2019, author = {Marmann, Michael}, title = {Alexa \& Co: Digitale Sprachassistenten in eLearning-Umgebungen}, publisher = {CHECK.point eLearning}, year = {2019}, abstract = {Karlsruhe/D{\"u}sseldorf, Dezember 2019 - "Alexa, ich m{\"o}chte mit Dir lernen! Digitale Sprachassistenten und eLearning - geht das?" Mit dieser Fragestellung widmet sich Prof. Dr. Michael Marmann von der Hochschule D{\"u}sseldorf am 30. Januar um 15.30 Uhr dem Thema Spracherkennung in der Weiterbildung. Prof. Marmann besch{\"a}ftigt sich intensiv mit dem Einsatz junger Tools und deren Erprobung.}, language = {de} } @inproceedings{WoltersKindsmuellerHeineckeetal.2019, author = {Wolters, Christian and Kindsm{\"u}ller, Martin Christof and Heinecke, Andreas M. and Rakow, Thomas C. and Dahm, Markus and Jent, Sophie and Rumpler, Martin}, title = {Medieninformatik 2019: Kompetenzorientierte Lehr-Lernszenarien in der Medieninformatik}, series = {Mensch und Computer 2019 - Workshopband. Bonn: Gesellschaft f{\"u}r Informatik e.V.}, booktitle = {Mensch und Computer 2019 - Workshopband. Bonn: Gesellschaft f{\"u}r Informatik e.V.}, publisher = {Deutsche Gesellschaft f{\"u}r Informatik e.V.}, doi = {10.18420/muc2019-ws-305}, pages = {512 -- 517}, year = {2019}, abstract = {Die Fachgruppe Medieninformatik (FG MI) im Fachbereich Mensch-Computer-Interaktion (FB MCI) der Gesellschaft f{\"u}r Informatik (GI) setzt im Workshop Medieninformatik 2019 die Arbeit an der Curriculums-Empfehlung f{\"u}r Medieninformatik (MI)-Studieng{\"a}nge fort. Die Identifikation grundlegender medieninformatik-spezifischer Kompetenzen steht zurzeit im Fokus der Arbeit des AK Curriculum der FG MI. Das besondere fachliche Spektrum in der Medieninformatik und Spezialisierungen einzelner MI- sowie MI-verwandter Studieng{\"a}nge stellt den Arbeitskreis immer wieder vor die Herausforderung zwischen grundlegenden Kompetenzen, die jede*r Medi-eninformatiker*in erwerben soll und fachlichen Vertiefungen zu differenzieren. Um die bisherige Curriculumsarbeit mit der Praxis in den Studieng{\"a}ngen abzugleichen bietet der Workshop der Fachcommunity ein Forum, um sowohl die bisher aufgestellten Kompetenzen zu diskutieren, gegebenenfalls zu erg{\"a}nzen, als auch MI-spezifische Lehr- und Lernformate vorzustellen, die die Erlangung dieser MI-Kompetenzen f{\"o}rdern. Der vorliegende Beitrag stellt den aktuellen Diskussionsstand dar.}, language = {de} } @phdthesis{Biedermann2019, author = {Biedermann, Till M.}, title = {Aeroacoustic transfer of leading edge serrations from single aerofoils to low-pressure fan applications}, publisher = {Technische Universit{\"a}t Berlin}, address = {Berlin}, organization = {Technische Univerit{\"a}t Berlin}, doi = {10.14279/depositonce-9075}, school = {Hochschule D{\"u}sseldorf}, pages = {221}, year = {2019}, abstract = {Leading edge serrations are well-known for their aeroacoustic potential in reducing aerofoil-turbulence interaction noise and are also associated with certain aerodynamic advantages. To prepare leading edge serrations for industrial application, two obstacles remain to be addressed. First is a combined analysis of the aeroacoustic and the aerodynamic performance of leading edge serrations to develop optimum designs. Second is the need to examine the transferability of the known effects of leading edge serrations from a single aerofoil to full rotors, which are considered to be the final area of application. This thesis aims to assist in the transfer of a well-investigated aerofoil with serrated leading edges from the rigid to the rotating domain. With this purpose, a single aerofoil type is selected and thoroughly analysed, experimentally and numerically, to generate a reliable data basis for aerodynamic performance and noise reduction capability. Aside from gathering information on the overall performance, the spatial distribution of the noise sources is localised, and the spectral composition of the noise reduction is found to follow a clearly defined scaling law. Aerodynamically, generated vortices are found to be responsible for a complex three-dimensional separation mechanism of the leading edge serrations, causing a delay of stall. The generated data basis is then used to design low-pressure axial fans of minimum complexity by keeping the initially chosen aerofoil type. The experimentally identified noise reduction mechanisms for the serrated axial fans are found to be more diverse than the single aerofoil and highly dependent on the inflow conditions and the operation point of the fan. A highly similar pattern for the spectral scaling of the noise reduction supports the finding that at optimum operation conditions, the previously identified noise reduction mechanisms for the single aerofoils are transferable to the rotating domain. On the other hand, additional aerodynamic mechanisms are found to dominate the noise reduction for the instability region of the fan, also contributing to reduced blade-to-blade interaction effects. Moreover, the blade-tip leakage flow is altered by delaying the development of coherent structures. The next step towards a more general description of the aeroacoustic and aerodynamic dependencies is developing a comprehensive model based on artificial neural networks. This model allows a combined analysis of the aerodynamic and acoustic performance of rotors with serrated leading edges and shows an accurate prediction of the overall performance and the spectral composition of the radiated noise. It also enables the development of multi-objective optima for serration designs and motivates further studies into the generalisability of the observed trends. Furthermore, the developed model represents a feasible tool to create tailored serration designs for maximum efficiency in both aeroacoustics and aerodynamics, contributing to the development of future low-noise fans and rotating machinery.}, language = {en} } @incollection{StodickDeckert2019, author = {Stodick, Klaus and Deckert, Carsten}, title = {Sustainable Parcel Delivery in Urban Areas with Micro Depots}, series = {Mobility in a Globalised World 2018}, booktitle = {Mobility in a Globalised World 2018}, editor = {Sucky, Eric and Kolke, Reinhard and Biethahn, Niels and Werner, Jan and Vogelsang, Michael}, publisher = {University of Bamberg Press}, address = {Bamberg}, isbn = {978-3863096625}, doi = {10.20378/irbo-54827}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:473-opus4-548276}, publisher = {Hochschule D{\"u}sseldorf}, pages = {233 -- 244}, year = {2019}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Wertminderung}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096531777}, pages = {60}, year = {2019}, abstract = {IAS 36: Wertminderung von Verm{\"o}genswerten IFRIC 10: Zwischenberichterstattung und Wertminderung}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {W{\"a}hrungsumrechnung}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096740810}, pages = {60}, year = {2019}, abstract = {IAS 21: Auswirkungen von Wechselkurs{\"a}nderungen IAS 29: Rechnungslegung in Hochinflationsl{\"a}ndern IFRIC 7: Anwendung des Anpassungsansatzes unter IAS 29 Rechnungslegung in Hochinflationsl{\"a}ndern IFRIC 16: Absicherung einer Nettoinvestition in einen ausl{\"a}ndischen Gesch{\"a}ftsbetrieb IFRIC 22: Fremdw{\"a}hrungstransaktionen und im Voraus erbrachte oder erhaltene Gegenleistungen SIC-7: Einf{\"u}hrung des Euro}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Umsatzerl{\"o}se}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096538998}, pages = {87}, year = {2019}, abstract = {IFRS 15: Erl{\"o}se aus Vertr{\"a}gen mit Kunden IFRIC 12: Dienstleistungskonzessionsvereinbarungen SIC-29: Dienstleistungskonzessionsvereinbarungen - Angaben}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {R{\"u}ckstellungen}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781091562387}, pages = {121}, year = {2019}, abstract = {IAS 19: Leistungen an Arbeitnehmer IAS 26: Bilanzierung und Berichterstattung von Altersversorgungspl{\"a}nen IAS 37: R{\"u}ckstellungen, Eventualverbindlichkeiten und Eventualforderungen IFRIC 1: {\"A}nderungen bestehender R{\"u}ckstellungen f{\"u}r Entsorgungs-, Wiederherstellungs- und {\"a}hnliche Verpflichtungen IFRIC 6: Verbindlichkeiten, die sich aus einer Teilnahme an einem spezifischen Markt ergeben — Elektro- und Elektronik-Altger{\"a}te IFRIC 14: IAS 19 — Die Begrenzung eines leistungsorientierten Verm{\"o}genswertes, Mindestdotierungsverpflichtungen und ihre Wechselwirkung IFRIC 20: Abraumkosten in der Produktionsphase eines Tagebaubergwerks}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Leasingverh{\"a}ltnisse}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781090410009}, pages = {56}, year = {2019}, abstract = {IFRS 16: Leasingverh{\"a}ltnisse}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Konzern- und Einzelabschl{\"u}sse}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781793911537}, pages = {219}, year = {2019}, abstract = {IAS 27: Einzelabschl{\"u}sse IAS 28: Anteile an assoziierten Unternehmen und Gemeinschaftsunternehmen IFRS 3: Unternehmenszusammenschl{\"u}sse IFRS 10: Konzernabschl{\"u}sse IFRS 11: Gemeinsame Vereinbarungen IFRS 12: Angaben zu Anteilen an anderen Unternehmen}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Anlage- und Umlaufverm{\"o}gen}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096735670}, pages = {148}, year = {2019}, abstract = {IAS 2: Vorr{\"a}te IAS 16: Sachanlagen IAS 20: Bilanzierung und Darstellung von Zuwendungen der {\"o}ffentlichen Hand IAS 23: Fremdkapitalkosten IAS 38: Immaterielle Verm{\"o}genswerte IAS 40: Als Finanzinvestition gehaltene Immobilien IFRS 5: Zur Ver{\"a}ußerung gehaltene langfristige Verm{\"o}genswerte und aufgegebene Gesch{\"a}ftsbereiche SIC-32: Immaterielle Verm{\"o}genswerte — Kosten von Internetseiten SIC-10: Beihilfen der {\"o}ffentlichen Hand — Kein spezifischer Zusammenhang mit betrieblichen T{\"a}tigkeiten}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {IFRS-Erstanwendung}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096800071}, pages = {47}, year = {2019}, abstract = {IFRS 1: Erstmalige Anwendung der International Financial Reporting Standards}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Abschlussgrundlagen}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096267096}, pages = {105}, year = {2019}, abstract = {IAS 1: Darstellung des Abschlusses IAS 7: Kapitalflussrechnungen IAS 8: Rechnungslegungsmethoden, {\"A}nderungen von rechnungslegungsbezogenen Sch{\"a}tzungen und Fehler IAS 10: Ereignisse nach dem Abschlussstichtag IAS 34: Zwischenberichterstattung IFRIC 1: {\"A}nderungen bestehender R{\"u}ckstellungen f{\"u}r Entsorgungs-, Wiederherstellungs- und {\"a}hnliche Verpflichtungen IFRIC 10: Zwischenberichterstattung und Wertminderung}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Ertragsteuern}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096746775}, pages = {63}, year = {2019}, abstract = {IAS 12: Ertragsteuern IFRIC 21: Abgaben IFRIC 23: Unsicherheit bez{\"u}glich der ertragsteuerlichen Behandlung SIC-10: Beihilfen der {\"o}ffentlichen Hand — Kein spezifischer Zusammenhang mit betrieblichen T{\"a}tigkeiten SIC-25: Ertragsteuern — {\"A}nderungen im Steuerstatus eines Unternehmens oder seiner Eigent{\"u}mer}, subject = {IFRS}, language = {de} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Branchenspezifische Standards}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096797128}, pages = {69}, year = {2019}, abstract = {IAS 41: Landwirtschaft IFRS 4: Versicherungsvertr{\"a}ge IFRS 6: Exploration und Evaluierung von Bodensch{\"a}tzen}, subject = {IFRS}, language = {de} } @book{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Beizulegender Zeitwert}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096687573}, pages = {60}, year = {2019}, abstract = {IFRS 13: Bemessung des beizulegenden Zeitwerts}, subject = {IFRS}, language = {de} } @book{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Ausgew{\"a}hlte Angaben}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096793311}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-19170}, pages = {53}, year = {2019}, abstract = {IAS 24: Angaben {\"u}ber Beziehungen zu nahestehenden Unternehmen und Personen IAS 33: Ergebnis je Aktie IFRS 8: Gesch{\"a}ftssegmente}, subject = {IFRS}, language = {de} } @book{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Anteilsbasierte Verg{\"u}tung}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781096768760}, pages = {51}, year = {2019}, abstract = {IFRS 2: Anteilsbasierte Verg{\"u}tung}, subject = {IFRS}, language = {de} }