@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} } @techreport{Joedicke2019, author = {J{\"o}dicke, Dirk}, title = {Finanzinstrumente}, volume = {IFRS}, edition = {Rechtsstand: 01.05.2019}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {9781790902880}, pages = {433}, year = {2019}, abstract = {IAS 32: Finanzinstrumente - Darstellung IAS 39: Finanzinstrumente: Ansatz und Bewertung IFRS 7: Finanzinstrumente - Angaben IFRS 9: Finanzinstrumente IFRIC 2: Gesch{\"a}ftsanteile an Genossenschaften und {\"a}hnliche Instrumente IFRIC 5: Rechte auf Anteile an Fonds f{\"u}r Entsorgung, Rekultivierung und Umweltsanierung IFRIC 16: Absicherung einer Nettoinvestition in einen ausl{\"a}ndischen Gesch{\"a}ftsbetrieb IFRIC 17: Sachdividenden an Eigent{\"u}mer IFRIC 19: Tilgung finanzieller Verbindlichkeiten durch Eigenkapitalinstrumente}, subject = {IFRS}, language = {de} } @inproceedings{MuellerLehmannBraun2019, author = {M{\"u}ller, Patrick and Lehmann, Matthias and Braun, Alexander}, title = {Optical quality metrics for image restoration}, series = {Digital Optical Technologies 2019}, volume = {Proceedings, Vol. 11062}, booktitle = {Digital Optical Technologies 2019}, editor = {Kress, Bernard C. and Schelkens, Peter}, address = {Munich}, organization = {International Society for Optics and Photonics}, doi = {10.1117/12.2528100}, pages = {1106214}, year = {2019}, abstract = {Image restoration is a process used to remove blur (from different sources like object motion or aberrations) from images by either non-blind or blind-deconvolution. The metrics commonly used to quantify the restoration process are peak signal-to-noise ratio (PSNR) and structural similarity index measure (SSIM). Often only a small sample of test images are used (like Lena or the camera guy). In optical design research PSNR and SSIM are not normally used, here image quality metrics based on linear system theory (e.g. modulation transfer function, MTF) are used to quantify optical errors like spherical or chromatic aberration. In this article we investigate how different image restoration algorithms can be quantified by applying image quality metrics. We start with synthetic image data that is used in camera test stands (e.g. Siemens star etc.), apply two different spatially variant degradation algorithms, and restore the original image by a direct method (Wiener filtering within sub-images), and by an iterative method (alternating direction method of multipliers, ADMM). Afterwards we compare the quality metrics (like MTF curves) for the original, the degraded and the restored image. As a first result we show that restoration algorithms sometimes fail in dealing with non-natural scenes, e.g. slanted-edge targets. Further, these first results indicate a correlation between degradation and restoration, i.e. the restoration algorithms are not capable of removing the optically relevant errors introduced by the degradation, a fact neither visible nor available from the PSNR values. We discuss the relevance in the context of the automotive industry, where image restoration may yield distinct advantages for camera-based applications, but testing methods rely on the used image quality metrics.}, language = {en} } @article{LehmannWittpahlZakouretal.2019, author = {Lehmann, Matthias and Wittpahl, Christian and Zakour, Hatem Ben and Braun, Alexander}, title = {Resolution and accuracy of nonlinear regression of point spread function with artificial neural networks}, series = {Optical Engineering}, volume = {58}, journal = {Optical Engineering}, number = {4}, publisher = {SPIE}, issn = {0091-3286}, doi = {10.1117/1.oe.58.4.045101}, pages = {045101}, year = {2019}, abstract = {We had already demonstrated a numerical model for the point spread function (PSF) of an optical system that can efficiently model both the experimental measurements and the lens design simulations of the PSF. The novelty lies in the portability and the parameterization of this model, which allow for completely new ways to validate optical systems, which is especially interesting not only for mass production optics such as in the automotive industry but also for ophthalmology. The numerical basis for this model is a nonlinear regression of the PSF with an artificial neural network (ANN). After briefly describing both the principle and the applications of the model, we then discuss two optically important aspects: the spatial resolution and the accuracy of the model. Using mean squared error (MSE) as a metric, we vary the topology of the neural network, both in the number of neurons and in the number of hidden layers. Measurement and simulation of a PSF can have a much higher spatial resolution than the typical pixel size used in current camera sensors. We discuss the influence this has on the topology of the ANN. The relative accuracy of the averaged pixel MSE is below 10  -  4, thus giving confidence that the regression does indeed model the measurement data with good accuracy. This article is only the starting point, and we propose several research avenues for future work.}, language = {en} } @article{LehmannWittpahlZakouretal.2019, author = {Lehmann, Matthias and Wittpahl, Christian and Zakour, Hatem Ben and Braun, Alexander}, title = {Modeling realistic optical aberrations to reuse existing drive scene recordings for autonomous driving validation}, series = {Journal of Electronic Imaging}, volume = {28}, journal = {Journal of Electronic Imaging}, number = {1}, publisher = {SPIE}, issn = {1560-229X}, doi = {10.1117/1.JEI.28.1.013005}, pages = {013005}, year = {2019}, abstract = {Training autonomous vehicles requires lots of driving sequences in all situations. Collecting and labeling these drive scenes is a very time-consuming and expensive process. Currently, it is not possible to reuse these drive scenes with different optical properties, because there exists no numerically efficient model for the transfer function of the optical system. We present a numerical model for the point spread function (PSF) of an optical system that can efficiently model both experimental measurements and lens design simulations of the PSF. The numerical basis for this model is a nonlinear regression of the PSF with an artificial neural network. The novelty lies in the portability and the parameterization of this model. We present a lens measurement series, yielding a numerical function for the PSF that depends only on the parameters defocus, field, and azimuth. By convolving existing images and videos with this PSF, we generate images as if seen through the measured lens. The methodology applies to any optical scenario, but we focus on the context of autonomous driving, where the quality of the detection algorithms depends directly on the optical quality of the used camera system. With this model, it is possible to reuse existing recordings, with the potential to avoid millions of test drive miles. The parameterization of the optical model allows for a method to validate the functional and safety limits of camera-based advanced driver assistance systems based on the real, measured lens actually used in the product.}, language = {en} } @inproceedings{Marmann2019, author = {Marmann, Michael}, title = {Digital Learning Blends zur Unterst{\"u}tzung agiler Lernsettings}, series = {Learntec 2019 - Agile Methoden im Lernumfeld, 29.01.-31.01.2019 in Karlsruhe}, booktitle = {Learntec 2019 - Agile Methoden im Lernumfeld, 29.01.-31.01.2019 in Karlsruhe}, publisher = {Learntec}, address = {Karlsruhe}, organization = {Learntec}, year = {2019}, abstract = {Agile Lernsettings sind unter anderem dadurch charakterisiert, dass agile Grundwerte und Prinzipien wie z.B. Selbstorganisation, Transparenz, Fokussierung und Kommunikation auf Augenh{\"o}he auf den Lernkontext {\"u}bertragen werden. Hierdurch kann sehr flexibel und schnell auf individuelle Lernbedarfe reagiert werden und auch Lehrprozesse lassen sich deutlich effizienter gestalten. Vor dem Hintergrund der digitalen Lebens- und Arbeitswelt des 21. Jahrhunderts stellt sich unmittelbar auch die Frage nach einer geeigneten digitalen Unterst{\"u}tzung agiler Lernsettings. Ist ein klassisches Learning Management System noch das Tool der Wahl oder bedarf es wendigerer L{\"o}sungen, um spezifische Bildungsziele zu erreichen? Diesen Fragen m{\"o}chte dieser Beitrag nachgehen und Antworten liefern. Hierzu wird der Begriff "Digital Learning Blend" eingef{\"u}hrt und anhand konkreter Beispiele agiler Lehrpraxis im Fachbereich Medien der Hochschule D{\"u}sseldorf illustriert. Der Fokus liegt dabei auf einer geplanten und strukturierten Zusammenstellung digitaler Tools, die einen Workflow-basierten Lernprozess entweder vollst{\"a}ndig oder phasenbezogen begleiten. Da zur Nutzung dieser Werkzeuge allerdings auch ein gewisses Maß an Digitalkompetenz sowohl bei den Lehrenden als auch bei den Studierenden erforderlich ist, ist eine bloße Zusammenstellung von Tools weder ausreichend, noch zielf{\"u}hrend. Die vorgestellten agilen Lernsettings beinhalten daher nicht nur Digital Learning Blends, sondern dar{\"u}ber hinaus kommentierte Learning-Workflows, anschauliche Beispiele, Video-Tutorials, Whiteboard-Animations und Templates f{\"u}r benutzte Werkzeuge etc. Die Lehrenden starten k{\"u}nftig somit bereits auf einem hohen Abstraktionslevel mit der jeweiligen agilen Lehrveranstaltung und k{\"o}nnen sich auf das konzentrieren, was die Studierenden zu Recht erwarten d{\"u}rfen: spannende, motivierende Lernerfahrungen.}, subject = {Digitalisierung}, language = {de} } @techreport{MarmannNilson2019, author = {Marmann, Michael and Nilson, Bj{\"o}rn}, title = {Innovationssemester: Digitale Medien zum Thema nachhaltiges Bauen, Webanwendung "Der Butterfly-Effekt" - eine einfache E-Learning-Anwendung zum Thema energieeffizientes Bauen}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, year = {2019}, abstract = {Dieses E-Learning ist im Rahmen des sogenannten „Innovationssemesters", einem interdisziplin{\"a}ren Projekt der Wissensregion D{\"u}sseldorf, mit Studierenden und Experten der Hochschule D{\"u}sseldorf, der Heinrich-Heine-Universit{\"a}t D{\"u}sseldorf, der Fliedner Fachhochschule D{\"u}sseldorf und der Bildungs- und Wissensplattform ecolearn f{\"u}r energieeffizientes Bauen gestaltet worden. Die Projektleitung lag bei Prof. Dr. Michael Marmann aus dem Fachbereich Medien der Hochschule D{\"u}sseldorf. Der Butterfly-Effekt. Was hat ein Schmetterling mit Nachhaltigkeit zu tun? Die Metapher des Butterfly-Effektes beschreibt ein Ph{\"a}nomen, bei dem selbst kleine Ereignisse oder Entscheidungen große Auswirkungen auf die Zukunft haben k{\"o}nnen. Der Fl{\"u}gelschlag eines Schmetterlings kann einen Tornado auf der anderen Seite der Welt ausl{\"o}sen. Die Bedeutung des Butterfly-Effekts finden wir auch sehr passend in Bezug auf den Klimawandel. Denn wir alle wissen, dass wir auf einem Planeten leben, der sich im Moment durch die Handlungen der Menschen stark ver{\"a}ndert. Diese Handlungen k{\"o}nnen zu dramatischen Folgen f{\"u}r das Klima f{\"u}hren. Wir wollen ein Zeichen setzen und unser Handeln {\"u}berdenken und verbessern. Heute etwas anders, etwas besser machen und damit eine gr{\"u}nere Zukunft schaffen. Wir wollen einen Planeten hinterlassen, auf dem auch unsere Nachfahren noch eine lebenswerte Zukunft erleben k{\"o}nnen. Das ist unser Ziel und unsere Mission. Darum heißt unser E-Learning Der Butterfly-Effekt. ...}, language = {de} } @inproceedings{Marmann2019, author = {Marmann, Michael}, title = {Agilit{\"a}t als Grundprinzip des Lernens im 21. Jahrhundert? Perspektiven zur Entwicklung der digital literacy in der Hochschullehre}, series = {Tag der digitalen Lehre 2019, 22. Juni 2019 an der TH Ingolstadt}, booktitle = {Tag der digitalen Lehre 2019, 22. Juni 2019 an der TH Ingolstadt}, publisher = {Technische Hochschule Ingolstadt}, address = {Ingolstadt}, organization = {Technische Hochschule Ingolstadt}, year = {2019}, abstract = {Das Buzzword Agilit{\"a}t ist in aller Munde und wird h{\"a}ufig im Zusammenhang mit Projektmanagement oder Softwareentwicklung genannt. Auch die Startup-Szene macht sich agile Konzepte intensiv zu eigen. Aber Agilit{\"a}t in der Hochschullehre? Im Agilen Manifest aus dem Jahre 2001 sind - auch jenseits der Technik - wichtige Werte und Prinzipien, wie z.B. Selbstorganisation, Transparenz, Fokussierung und Kommunikation auf Augenh{\"o}he beschrieben. Im Vortrag wird es darum gehen, ob und wie sich agile Konzepte, Methoden und Werkzeuge auf die Lehre {\"u}bertragen lassen, um dadurch vielleicht wendiger und individueller auf aktuelle Lernbedarfe reagieren zu k{\"o}nnen. Dar{\"u}ber hinaus wird anhand konkreter Beispiele aus der Lehrpraxis aufgezeigt, wie der Einsatz digitaler, agiler Werkzeuge Studierende besser auf die sogenannten „21st Century Skills" vorbereiten und gleichzeitig digital kompetenter machen kann. Im anschließenden Praxisworkshop mit dem Titel "Digital Learning Blends f{\"u}r agile Lernsettings" werden beispielhaft einige digitale Tools des vorangegangenen Vortrages vorgestellt, die in agilen Lernsettings eine wichtige Rolle einnehmen k{\"o}nnen.}, language = {de} } @inproceedings{Marmann2019, author = {Marmann, Michael}, title = {Agilit{\"a}t, Digital Literacy und 4C's - Bausteine innovativer Lernsettings f{\"u}r das 21. Jahrhundert?}, series = {DINI-Zukunftswerkstatt 2019 gemeinsam mit den 17. Koblenzer E-Learning-Tagen, 13. bis 14. Juni 2019}, booktitle = {DINI-Zukunftswerkstatt 2019 gemeinsam mit den 17. Koblenzer E-Learning-Tagen, 13. bis 14. Juni 2019}, publisher = {Universit{\"a}t Koblenz-Landau}, address = {Koblenz}, organization = {Universit{\"a}t Koblenz-Landau, DINI-Arbeitsgruppen "E-Learning", "Lernr{\"a}ume" und "VIKTAS"}, year = {2019}, abstract = {Agilit{\"a}t ist in aller Munde und wird sehr h{\"a}ufig im Zusammenhang mit Projektmanagement oder Softwareentwicklung genannt. Auch die Startup-Szene macht sich agile Konzepte intensiv zu eigen. Aber Agilit{\"a}t in der Hochschullehre? In dieser Keynote wird die Frage behandelt, ob und wie sich agile Werte, Prinzipien, Methoden und Tools in der Hochschullehre anwenden lassen, um wendiger und individueller auf aktuelle Lernbedarfe reagieren zu k{\"o}nnen und vielleicht sogar effizienter zu lehren. Dar{\"u}ber hinaus wird anhand konkreter Beispiele aus der Lehrpraxis aufgezeigt, wie der Einsatz digitaler und agiler Werkzeuge Studierende besser auf die sogenannten „21st Century Skills" (auch: 4C's) vorbereiten und dabei gleichzeitig digital kompetenter machen kann.}, language = {de} } @article{KretschmarNiemannDeckert2019, author = {Kretschmar, Dominik and Niemann, J{\"o}rg and Deckert, Carsten}, title = {Digitalisierungsindex zur prozessnahen Analyse mittelst{\"a}ndischer Unternehmen}, series = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, volume = {114}, journal = {ZWF Zeitschrift f{\"u}r wirtschaftlichen Fabrikbetrieb}, number = {4}, publisher = {Hanser}, issn = {0947-0085}, doi = {10.3139/104.112064}, pages = {213 -- 218}, year = {2019}, language = {de} } @article{DeckertGoers2019, author = {Deckert, Carsten and G{\"o}rs, Nadine}, title = {Transport carbon footprint in the german courier, express and parcel industry (CEP industry)}, series = {Sustainability Management Forum | NachhaltigkeitsManagementForum}, volume = {27}, journal = {Sustainability Management Forum | NachhaltigkeitsManagementForum}, number = {1}, publisher = {Springer}, doi = {10.1007/s00550-018-0471-1}, pages = {23 -- 30}, year = {2019}, language = {en} } @periodical{OPUS4-1502, title = {Journal of Virtual Reality and Broadcasting}, editor = {Herder, Jens}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, issn = {1860-2037}, year = {2019}, abstract = {The "Journal of Virtual Reality and Broadcasting" is an open access E-journal covering advanced media technology for the integration of human computer interaction and modern information systems. The main focus is on the creation of synergies between such basic technologies as computer graphics and state-of-the-art broadcasting techniques. The main goals are to publish research results in the field of Virtual Reality and Broadcasting, to provoke discussions, and to promote the exchange of ideas and information. Developments in the area have a direct effect on society, therefore social aspects will also be considered. As an interdisciplinary field Virtual Reality requires multilateral collaboration in order to enable new applications. RB publishes articles consecutively and in electronic form only. All articles are peer-reviewed in a strict review process by at least three independent experts from the appropriate field of research and appear in the English language. The articles are organized in one volume per year with ten to twenty articles. Material that has been previously presented at conferences undergo a major revision and are extended and modified by the authors with at least 20\% new material according to the Journal's policy for previously published articles. The Journal has been established in 2004. Currently, the submission and publication of articles is free of charge. No author fees are applied.}, language = {en} }