@inproceedings{ElsenKraissKrumbiegel1997, author = {Elsen, Ingo and Kraiss, Karl-Friedrich and Krumbiegel, Dirk}, title = {Pixel based 3D object recognition with bidirectional associative memories}, series = {International Conference on Neural Networks 1997}, booktitle = {International Conference on Neural Networks 1997}, publisher = {IEEE}, address = {New York}, isbn = {0-7803-4122-8}, pages = {1679 -- 1684}, year = {1997}, abstract = {This paper addresses the pixel based recognition of 3D objects with bidirectional associative memories. Computational power and memory requirements for this approach are identified and compared to the performance of current computer architectures by benchmarking different processors. It is shown, that the performance of special purpose hardware, like neurocomputers, is between one and two orders of magnitude higher than the performance of mainstream hardware. On the other hand, the calculation of small neural networks is performed more efficiently on mainstream processors. Based on these results a novel concept is developed, which is tailored for the efficient calculation of bidirectional associative memories. The computational efficiency is further enhanced by the application of algorithms and storage techniques which are matched to characteristics of the application at hand.}, language = {en} } @article{ElsenKraiss1999, author = {Elsen, Ingo and Kraiss, Karl-Friedrich}, title = {System concept and realization of a scalable neurocomputing architecture}, series = {Systems Analysis Modelling Simulation}, volume = {35}, journal = {Systems Analysis Modelling Simulation}, number = {4}, publisher = {Gordon and Breach Science Publishers}, address = {Amsterdam}, issn = {0232-9298}, pages = {399 -- 419}, year = {1999}, abstract = {This paper describes the realization of a novel neurocomputer which is based on the concepts of a coprocessor. In contrast to existing neurocomputers the main interest was the realization of a scalable, flexible system, which is capable of computing neural networks of arbitrary topology and scale, with full independence of special hardware from the software's point of view. On the other hand, computational power should be added, whenever needed and flexibly adapted to the requirements of the application. Hardware independence is achieved by a run time system which is capable of using all available computing power, including multiple host CPUs and an arbitrary number of neural coprocessors autonomously. The realization of arbitrary neural topologies is provided through the implementation of the elementary operations which can be found in most neural topologies.}, language = {en} } @inproceedings{ElsenHawariJohnen2010, author = {Elsen, Ingo and Hawari, Asma and Johnen, Uwe}, title = {Produktkernel in der Systemintegration (Erfahrungsbericht aus der Praxis)}, series = {Vom Projekt zum Produkt - Fachtagung des GI-Fachausschusses Management der Anwendungsentwicklung und -wartung im Fachbereich Wirtschaftsinformatik (WI-MAW), 1. - 3. Dezember 2010 in Aachen}, booktitle = {Vom Projekt zum Produkt - Fachtagung des GI-Fachausschusses Management der Anwendungsentwicklung und -wartung im Fachbereich Wirtschaftsinformatik (WI-MAW), 1. - 3. Dezember 2010 in Aachen}, editor = {Pietsch, Wolfram and Krams, Benedikt}, publisher = {Gesellschaft f{\"u}r Informatik eV}, address = {Bonn}, isbn = {9783885792727}, issn = {1617-5468}, pages = {93 -- 102}, year = {2010}, abstract = {In der Vergangenheit basierten große Systemintegrationsprojekte in der Regel auf Individualentwicklungen f{\"u}r einzelne Kunden. Getrieben durch Kostendruck steigt aber der Bedarf nach standardisierten L{\"o}sungen, die gleichzeitig die individuellen Anforderungen des jeweiligen Umfelds ber{\"u}cksichtigen. T-Systems GEI GmbH wird beiden Anforderungen mit Produktkerneln gerecht. Neben den technischen Aspekten der Kernelentwicklung spielen besonders organisatorische Aspekte eine Rolle, um Kernel effizient und qualitativ hochwertig zu entwickeln, ohne deren Funktionalit{\"a}ten ins Uferlose wachsen zu lassen. Umgesetzt hat T-Systems dieses Konzept f{\"u}r Flughafeninformationssysteme. Damit kann dem wachsenden Bedarf der Flughafenbetreiber nach einer effizienten und kosteng{\"u}nstigen Softwarel{\"o}sung zur Unterst{\"u}tzung Ihrer Gesch{\"a}ftsprozesse entsprochen werden.}, language = {de} } @article{ElsenHartungHornetal.2001, author = {Elsen, Ingo and Hartung, Frank and Horn, Uwe and Kampmann, Markus and Peters, Liliane}, title = {Streaming technology in 3G mobile communication systems}, series = {Computer : innovative technology for computer professionals}, volume = {34}, journal = {Computer : innovative technology for computer professionals}, number = {9 Seiten}, editor = {Voas, Jeffrey}, publisher = {IEEE}, address = {New York}, issn = {0018-9162}, pages = {46 -- 52}, year = {2001}, abstract = {Third-generation mobile communication systems will combine standardized streaming with a range of unique services to provide high-quality Internet content that meets the specific needs of the rapidly growing mobile market.}, language = {en} } @inproceedings{Elsen1998, author = {Elsen, Ingo}, title = {A pixel based approach to view based object recognition with self-organizing neural networks}, series = {IECON'98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society}, booktitle = {IECON'98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society}, publisher = {IEEE}, address = {New York}, isbn = {0-7803-4503-7}, doi = {10.1109/IECON.1998.724032}, pages = {2040 -- 2044}, year = {1998}, abstract = {This paper addresses the pixel based classification of three dimensional objects from arbitrary views. To perform this task a coding strategy, inspired by the biological model of human vision, for pixel data is described. The coding strategy ensures that the input data is invariant against shift, scale and rotation of the object in the input domain. The image data is used as input to a class of self organizing neural networks, the Kohonen-maps or self-organizing feature maps (SOFM). To verify this approach two test sets have been generated: the first set, consisting of artificially generated images, is used to examine the classification properties of the SOFMs; the second test set examines the clustering capabilities of the SOFM when real world image data is applied to the network after it has been preprocessed to be invariant against shift, scale and rotation. It is shown that the clustering capability of the SOFM is strongly dependant on the invariance coding of the images.}, language = {en} } @phdthesis{Elsen2000, author = {Elsen, Ingo}, title = {Ansichtenbasierte 3D-Objekterkennung mit erweiterten selbstorganisierenden Merkmalskarten}, publisher = {VDI-Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-363110-0}, issn = {0341-1796}, pages = {VIII, 140 S. : Ill., graph. Darst.}, year = {2000}, language = {de} } @book{ElsaesserKlebinggatKuhnetal.2024, author = {Elsaesser, Evelyn and Klebinggat, Michael and Kuhn, Wilfried and Michielsens, Constant and Pauels, Willibert and Popkes, Enno E. and Schneider, Elke and Laack, Walter van and Warven, Rinus van}, title = {Schnittstelle Tod - Ist die Menschheit zu retten ohne Vertrauen auf ein Danach}, editor = {Laack, Walter van}, publisher = {van Laack Buchverlag}, address = {Aachen}, isbn = {978-3-936624-58-8}, pages = {156 Seiten}, year = {2024}, language = {de} } @article{EllrichLind2012, author = {Ellrich, Thomas and Lind, Thorsten Patric}, title = {Die 'kalte Zwangsverwaltung' durch den Insolvenzverwalter}, series = {Forderungs-Praktiker : WIKI}, journal = {Forderungs-Praktiker : WIKI}, number = {1}, publisher = {FCH}, address = {Heidelberg}, pages = {16 -- 21}, year = {2012}, language = {de} } @article{EllerwegRitzSchuhmann2009, author = {Ellerweg, Roland and Ritz, Thomas and Schuhmann, Stefan}, title = {Anwendungsentwicklung f{\"u}r iPhone und Windows Mobile : ein bisschen von allem}, series = {iX : Magazin f{\"u}r professionelle Informationstechnik}, journal = {iX : Magazin f{\"u}r professionelle Informationstechnik}, number = {3}, issn = {0935-9680 (Print)}, pages = {132 -- 135}, year = {2009}, language = {de} } @inproceedings{EllerwegRitz2008, author = {Ellerweg, Roland and Ritz, Thomas}, title = {Tool supported requirements analysis for the user centered development of mobile enterprise software}, series = {Proceeding of Wireless Applications and Computing 2008 and Telecommunications, Networks and Systems 2008 : MCCSIS '08 ; IADIS Multi Conference on Computer Science and Information Systems ; 22 - 24 July 2008, Amsterdam, The Netherlands}, booktitle = {Proceeding of Wireless Applications and Computing 2008 and Telecommunications, Networks and Systems 2008 : MCCSIS '08 ; IADIS Multi Conference on Computer Science and Information Systems ; 22 - 24 July 2008, Amsterdam, The Netherlands}, editor = {Roth, J{\"o}rg}, publisher = {IADIS Press}, address = {[Lisboa]}, isbn = {978-972-8924-62-1}, pages = {160 -- 162}, year = {2008}, abstract = {A user centered development method has proved satisfactory for the development of mobile enterprise software. To make use of this method, detailed information about the user and the place where the user interacts with his mobile device is required. This article describes how both can be modeled by a stereotypical and conceptual extended UML extension. Finally, a software tool is presented that supports the developed UML extension.}, language = {en} } @inproceedings{ElgamalHeuermann2020, author = {Elgamal, Abdelrahman and Heuermann, Holger}, title = {Design and Development of a Hot S-Parameter Measurement System for Plasma and Magnetron Applications}, series = {Proceedings of the 2020 German Microwave Conference}, booktitle = {Proceedings of the 2020 German Microwave Conference}, publisher = {IEEE}, address = {New York, NY}, isbn = {978-3-9820397-1-8}, pages = {124 -- 127}, year = {2020}, abstract = {This paper presents the design, development and calibration procedures of a novel hot S-parameter measurement system for plasma and magnetron applications with power level up to 6 kW. Based on a vector network analyzer, a power amplifier and two directional couplers, the input matching hotS 11 and transmission hotS 21 of the device under test are measured at 2.45 GHz center frequency and 300MHz bandwidth, while the device is driven by the magnetron. This measurement system opens a new horizon to develop many new industrial applications such as microwave plasma jets, dryer systems, dryers and so forth. Furthermore, the developing, controlling and monitoring a 2kW 2.45GHz plasma jet and a dryer system using the measurement system are presented and explained.}, language = {en} } @article{ElbersZangBuck1990, author = {Elbers, Gereon and Zang, Thorsten and Buck, Manfred}, title = {Ruß-Immissionsmessungen im Einflußbereich des Kraftfahrzeugverkehrs}, series = {Staub, Reinhaltung der Luft : air quality control. 50 (1990)}, journal = {Staub, Reinhaltung der Luft : air quality control. 50 (1990)}, isbn = {0039-0771}, pages = {93}, year = {1990}, language = {de} } @article{ElbersThomzik1990, author = {Elbers, Gereon and Thomzik, Manfred}, title = {Das Entstehen geruchsintensiver schwefelhaltiger organischer Verbindungen in Lackierereien und M{\"o}glichkeiten zu deren Vermeidung}, series = {Aus der T{\"a}tigkeit der LIS / Landesanstalt f{\"u}r Immissionsschutz des Landes Nordrhein-Westfalen. 1989 (1990)}, journal = {Aus der T{\"a}tigkeit der LIS / Landesanstalt f{\"u}r Immissionsschutz des Landes Nordrhein-Westfalen. 1989 (1990)}, isbn = {0931-5497}, pages = {35}, year = {1990}, language = {de} } @article{ElbersRichter1994, author = {Elbers, Gereon and Richter, J.}, title = {Messung kraftfahrzeugbedingter Rußimmissionen}, series = {Staub, Reinhaltung der Luft : air quality control. 54 (1994)}, journal = {Staub, Reinhaltung der Luft : air quality control. 54 (1994)}, isbn = {0039-0771}, pages = {19}, year = {1994}, language = {de} } @article{ElbersRemmeLehmann1986, author = {Elbers, Gereon and Remme, S. and Lehmann, G.}, title = {EPR of Cr3+ in Tris(acetylacetonato)gallium(III) Single Crystals}, series = {Inorganic Chemistry. 25 (1986)}, journal = {Inorganic Chemistry. 25 (1986)}, isbn = {0020-1669}, pages = {896 -- 897}, year = {1986}, language = {en} } @article{ElbersRemmeLehmann1987, author = {Elbers, Gereon and Remme, S. and Lehmann, G.}, title = {EPR and Optical Absorption of Cr3+ in CsCl and CsBr}, series = {Physica Status Solidi (B). 142 (1987), H. 2}, journal = {Physica Status Solidi (B). 142 (1987), H. 2}, isbn = {0031-8957}, pages = {367 -- 377}, year = {1987}, language = {en} } @article{ElbersPfefferFrieseletal.1995, author = {Elbers, Gereon and Pfeffer, Hans-Ulrich and Friesel, J{\"u}rgen and Beier, Reinhold}, title = {Air Pollution Monitoring in Street Canyons / Hans-Ulrich Pfeffer, J{\"u}rgen Friesel, Gereon Elbers, Reinhold Beier,}, series = {Transport and air pollution : proceedings ; 3rd international symposium, Palais des Papes, Avignon, France, 6 - 10 June 1994 = Transports et pollution de l'air / [Third International Symposium on Transport and Air Pollution]. Ed. by Robert Joumard. Organizer: French National Institute for Transport and Safety Research}, journal = {Transport and air pollution : proceedings ; 3rd international symposium, Palais des Papes, Avignon, France, 6 - 10 June 1994 = Transports et pollution de l'air / [Third International Symposium on Transport and Air Pollution]. Ed. by Robert Joumard. Organizer: French National Institute for Transport and Safety Research}, publisher = {Elsevier}, address = {Amsterdam}, pages = {IX, 337 S : graph. Darst.}, year = {1995}, language = {en} } @article{ElbersPfefferFrieseletal.1993, author = {Elbers, Gereon and Pfeffer, H.-U. and Friesel, J. and Beier, R.}, title = {Pilotuntersuchungen gem{\"a}ß dem Verordnungsentwurf nach \S 40, Abs. 2 des Bundesimmissionsschutzgesetzes / H.-U. Pfeffer, J. Friesel, G. Elbers, R. Beier, K. Ellermann}, series = {Drei Jahrzehnte Luftqualit{\"a}ts{\"u}berwachung : Vortr{\"a}ge und Berichte zum Kolloquium "Drei Jahrzehnte Luftqualit{\"a}ts{\"u}berwachung - Bilanz und Perspektiven" am 11. November 1993 in Essen / [Hrsg.: Landesanstalt f{\"u}r Immissionsschutz Nordrhein-Westfalen. Red. Bearb.: Robert Niesenhaus]}, journal = {Drei Jahrzehnte Luftqualit{\"a}ts{\"u}berwachung : Vortr{\"a}ge und Berichte zum Kolloquium "Drei Jahrzehnte Luftqualit{\"a}ts{\"u}berwachung - Bilanz und Perspektiven" am 11. November 1993 in Essen / [Hrsg.: Landesanstalt f{\"u}r Immissionsschutz Nordrhein-Westfalen. Red. Bearb.: Robert Niesenhaus]}, address = {Essen}, pages = {117}, year = {1993}, language = {de} } @article{ElbersNierenHoffmannetal.2008, author = {Elbers, Gereon and Nieren, Monika and Hoffmann, Katharina and G{\"a}b, Martina}, title = {Schnellerfassung der Wirkung von Luftschadstoffen auf Pflanzen mit der Nahinfrarotspektroskopie (NIRS). Untersuchung Ammoniak exponierter Gr{\"a}ser und Kr{\"a}uter / Nieren, Monika ; Hoffmann, Katharina ; G{\"a}b, Martina ; Ooyen, Sven van ; K{\"o}llner, Barbara ; Elbe}, series = {Immissionsschutz. 13 (2008), H. 2}, journal = {Immissionsschutz. 13 (2008), H. 2}, isbn = {1430-9262}, pages = {82 -- 90}, year = {2008}, language = {de} } @article{ElbersMuratyan1991, author = {Elbers, Gereon and Muratyan, Simone}, title = {Problematik verkehrsbezogener Außenluftmessungen von Partikeln (Dieselruß)}, series = {+ Krebserzeugende Stoffe in der Umwelt : Herkunft, Messung, Risiko, Minimierung ; Kolloquium Mannheim, 23. bis 25. April 1991 / Kommission Reinhaltung der Luft im VDI und DIN}, journal = {+ Krebserzeugende Stoffe in der Umwelt : Herkunft, Messung, Risiko, Minimierung ; Kolloquium Mannheim, 23. bis 25. April 1991 / Kommission Reinhaltung der Luft im VDI und DIN}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-090888-2}, pages = {143}, year = {1991}, language = {de} } @article{ElbersLehmann1985, author = {Elbers, Gereon and Lehmann, G.}, title = {Electron paramagnetic resonance of Vanadyl ion impurities in crystalline solids: A comment}, series = {Journal of Physics and Chemistry of Solids. 46 (1985), H. 6}, journal = {Journal of Physics and Chemistry of Solids. 46 (1985), H. 6}, isbn = {0022-3697}, pages = {761}, year = {1985}, language = {en} } @article{ElbersLehmann1985, author = {Elbers, Gereon and Lehmann, G.}, title = {Electron Paramagnetic Resonance and Optical Absorption Spectra of VO2+ in CsCl Single Crystals}, series = {Zeitschrift f{\"u}r Naturforschung / Section A, a journal of physical sciences. 40 (1985)}, journal = {Zeitschrift f{\"u}r Naturforschung / Section A, a journal of physical sciences. 40 (1985)}, isbn = {0932-0784}, pages = {511}, year = {1985}, language = {en} } @article{ElbersGaebHoffmannetal.2006, author = {Elbers, Gereon and G{\"a}b, Martina and Hoffmann, Katharina and Lobe, Melanie}, title = {NIR-spectroscopic investigation of foliage of ozone-stressed Fagus sylvatica trees / G{\"a}b, Martina ; Hoffmann, Katharina ; Lobe, Melanie ; Metzger, Rut ; Ooyen, Sven van ; Elbers, Gereon ; K{\"o}llner, Barbara}, series = {Journal of Forest Research. 11 (2006), H. 2}, journal = {Journal of Forest Research. 11 (2006), H. 2}, isbn = {1341-6979}, pages = {69 -- 75}, year = {2006}, language = {en} } @article{ElbersBuck1992, author = {Elbers, Gereon and Buck, Manfred}, title = {Soot Concentration in Ambient Air / M. Buck, G. Elbers}, series = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 45 (1992)}, journal = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 45 (1992)}, isbn = {0014-0058}, pages = {219}, year = {1992}, language = {en} } @article{ElbersBehnerRemmeetal.1986, author = {Elbers, Gereon and Behner, T. and Remme, S. and Prissok, F.}, title = {Interstitial Metal Impurities as a Possible Cause of Enhanced Reactivities / T. Behner, G. Elbers, S. Remme, F. Prissok, P. Stegger, and G. Lehmann}, series = {Berichte der Bunsen-Gesellschaft : physical chemistry, chemical physics. 90 (1986)}, journal = {Berichte der Bunsen-Gesellschaft : physical chemistry, chemical physics. 90 (1986)}, isbn = {0005-9021}, pages = {698}, year = {1986}, language = {en} } @article{ElbersBauerBucketal.1994, author = {Elbers, Gereon and Bauer, H. D. and Buck, Manfred and Dahmann, D.}, title = {Rußmessungen am Arbeitsplatz und in der Außenluft - Vergleich zweier Meßmethoden / H.D. Bauer, M. Buck, D. Dahmann, G. Elbers, H.-H. Fricke}, series = {Staub, Reinhaltung der Luft : air quality control. 54 (1994)}, journal = {Staub, Reinhaltung der Luft : air quality control. 54 (1994)}, isbn = {0039-0771}, pages = {55}, year = {1994}, language = {de} } @article{Elbers2009, author = {Elbers, Gereon}, title = {Identification of marker peptides in hair for discrimination with regard to species and breed / Koerner, Andrea ; Ring, Maike ; Fabry, Marlies ; Elbers, Gereon ; Moeller, Martin}, series = {Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009}, journal = {Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009}, publisher = {DWI}, address = {Aachen}, pages = {1 CD-ROM}, year = {2009}, language = {en} } @article{Elbers1993, author = {Elbers, Gereon}, title = {Messung von Ruß in der Außenluft - Praktische Erfahrungen und Meßergebnisse aus NRW}, series = {Aktuelle Aufgaben der Messtechnik in der Luftreinhaltung : Kolloquium Heidelberg, 2. bis 4. Juni 1993 / Kommission Reinhaltung der Luft im VDI und DIN}, journal = {Aktuelle Aufgaben der Messtechnik in der Luftreinhaltung : Kolloquium Heidelberg, 2. bis 4. Juni 1993 / Kommission Reinhaltung der Luft im VDI und DIN}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-091059-3}, pages = {337}, year = {1993}, language = {de} } @book{Elbers2004, author = {Elbers, Gereon}, title = {Entwicklung eines Schnellmessverfahrens zur Charakterisierung der Wirkung von Umweltschadstoffen auf Pflanzen mit der Nahinfrarot-Spektroskopie : Schlussbericht zum Forschungsvorhaben ; Vorhabensbezeichnung: Schnellmessverfahren zur Charakterisierung der Wirkung von Umweltschadstoffen ; Laufzeit des Vorhabens: 01.09.2002 bis 29.02.2004 ; Verl{\"a}ngerung der Laufzeit: 01.03.2004 bis 30.04.04 ; Berichtszeitraum: 01.09.2002 bis 30.04.2004 / Zuwendungsempf{\"a}nger: FH-Aachen, Abt. J{\"u}lich, FB Chemie und Biotechnik. Gereon Elbers}, publisher = {Fachhochschule Aachen}, address = {J{\"u}lich}, pages = {Online-Ressource (17 S., 85,3 KB)}, year = {2004}, language = {de} } @inproceedings{ElDeibChudobaButenwegetal.2002, author = {El-Deib, Khaled and Chudoba, Rostislav and Butenweg, Christoph and Meskouris, Konstantin and K{\"o}nke, Carsten and Bettzieche, Volker}, title = {Safety assessment of rockfill and masonry dams}, series = {Structural dynamics - EURODYN 2002 : proceedings of the 4th [i.e. 5th] International Conference on Structural Dynamics, Munich, Germany, 2 - 5 September 2002 / ed. by H. Grundmann ... Vol. 1}, booktitle = {Structural dynamics - EURODYN 2002 : proceedings of the 4th [i.e. 5th] International Conference on Structural Dynamics, Munich, Germany, 2 - 5 September 2002 / ed. by H. Grundmann ... Vol. 1}, publisher = {Balkema}, address = {Lisse}, organization = {International Conference on Structural Dynamics <5, 2002, M{\"u}nchen>}, isbn = {90-5809-510-X}, pages = {237 -- 242}, year = {2002}, language = {en} } @article{ElDeibButenwegKlinkel2020, author = {El-Deib, Khaled and Butenweg, Christoph and Klinkel, Sven}, title = {Erdbebennachweis von Mauerwerksbauten mit realistischen Modellen und erh{\"o}hten Verhaltensbeiwerten}, series = {Bautechnik}, volume = {97}, journal = {Bautechnik}, number = {11}, publisher = {Ernst \& Sohn}, address = {Berlin}, doi = {10.1002/bate.202000016}, pages = {756 -- 765}, year = {2020}, abstract = {Die Anwendung des linearen Nachweiskonzepts auf Mauerwerksbauten f{\"u}hrt dazu, dass bereits heute Standsicherheitsnachweise f{\"u}r Geb{\"a}ude mit {\"u}blichen Grundrissen in Gebieten mit moderaten Erdbebeneinwirkungen nicht mehr gef{\"u}hrt werden k{\"o}nnen. Diese Problematik wird sich in Deutschland mit der Einf{\"u}hrung kontinuierlicher probabilistischer Erdbebenkarten weiter versch{\"a}rfen. Aufgrund der Erh{\"o}hung der seismischen Einwirkungen, die sich vielerorts ergibt, ist es erforderlich, die vorhandenen, bislang nicht ber{\"u}cksichtigten Tragf{\"a}higkeitsreserven in nachvollziehbaren Nachweiskonzepten in der Baupraxis verf{\"u}gbar zu machen. Der vorliegende Beitrag stellt ein Konzept f{\"u}r die geb{\"a}udespezifische Ermittlung von erh{\"o}hten Verhaltensbeiwerten vor. Die Verhaltensbeiwerte setzen sich aus drei Anteilen zusammen, mit denen die Lastumverteilung im Grundriss, die Verformungsf{\"a}higkeit und Energiedissipation sowie die {\"U}berfestigkeiten ber{\"u}cksichtigt werden. F{\"u}r die rechnerische Ermittlung dieser drei Anteile wird ein nichtlineares Nachweiskonzept auf Grundlage von Pushover-Analysen vorgeschlagen, in denen die Interaktionen von W{\"a}nden und Geschossdecken durch einen Einspanngrad beschrieben werden. F{\"u}r die Bestimmung der Einspanngrade wird ein nichtlinearer Modellierungsansatz eingef{\"u}hrt, mit dem die Interaktion von W{\"a}nden und Decken abgebildet werden kann. Die Anwendung des Konzepts mit erh{\"o}hten geb{\"a}udespezifischen Verhaltensbeiwerten wird am Beispiel eines Mehrfamilienhauses aus Kalksandsteinen demonstriert. Die Ergebnisse der linearen Nachweise mit erh{\"o}hten Verhaltensbeiwerten f{\"u}r dieses Geb{\"a}ude liegen deutlich n{\"a}her an den Ergebnissen nichtlinearer Nachweise und somit bleiben {\"u}bliche Grundrisse in Erdbebengebieten mit den traditionellen linearen Rechenans{\"a}tzen nachweisbar.}, language = {de} } @article{ElDeibButenwegKlinkel2021, author = {El-Deib, Khaled and Butenweg, Christoph and Klinkel, Sven}, title = {Erdbebennachweis von Mauerwerksbauten mit realistischen Modellen und erh{\"o}hten Verhaltensbeiwerten}, series = {Mauerwerk}, volume = {2021}, journal = {Mauerwerk}, number = {3}, editor = {Jesse, Dirk}, publisher = {Wiley}, address = {Weinheim}, issn = {1437-1022}, doi = {10.1002/dama.202110014}, pages = {110 -- 119}, year = {2021}, abstract = {Die Anwendung des linearen Nachweiskonzepts auf Mauerwerksbauten f{\"u}hrt dazu, dass bereits heute Standsicherheitsnachweise f{\"u}r Geb{\"a}ude mit {\"u}blichen Grundrissen in Gebieten mit moderaten Erdbebeneinwirkungen nicht mehr gef{\"u}hrt werden k{\"o}nnen. Diese Problematik wird sich in Deutschland mit der Einf{\"u}hrung kontinuierlicher probabilistischer Erdbebenkarten weiter versch{\"a}rfen. Aufgrund der Erh{\"o}hung der seismischen Einwirkungen, die sich vielerorts ergibt, ist es erforderlich, die vorhandenen, bislang nicht ber{\"u}cksichtigten Tragf{\"a}higkeitsreserven in nachvollziehbaren Nachweiskonzepten in der Baupraxis verf{\"u}gbar zu machen. Der vorliegende Beitrag stellt ein Konzept f{\"u}r die geb{\"a}udespezifische Ermittlung von erh{\"o}hten Verhaltensbeiwerten vor. Die Verhaltensbeiwerte setzen sich aus drei Anteilen zusammen, mit denen die Lastumverteilung im Grundriss, die Verformungsf{\"a}higkeit und Energiedissipation sowie die {\"U}berfestigkeiten ber{\"u}cksichtigt werden. F{\"u}r die rechnerische Ermittlung dieser drei Anteile wird ein nichtlineares Nachweiskonzept auf Grundlage von Pushover-Analysen vorgeschlagen, in denen die Interaktionen von W{\"a}nden und Geschossdecken durch einen Einspanngrad beschrieben werden. F{\"u}r die Bestimmung der Einspanngrade wird ein nichtlinearer Modellierungsansatz eingef{\"u}hrt, mit dem die Interaktion von W{\"a}nden und Decken abgebildet werden kann. Die Anwendung des Konzepts mit erh{\"o}hten geb{\"a}udespezifischen Verhaltensbeiwerten wird am Beispiel eines Mehrfamilienhauses aus Kalksandsteinen demonstriert. Die Ergebnisse der linearen Nachweise mit erh{\"o}hten Verhaltensbeiwerten f{\"u}r dieses Geb{\"a}ude liegen deutlich n{\"a}her an den Ergebnissen nichtlinearer Nachweise und somit bleiben {\"u}bliche Grundrisse in Erdbebengebieten mit den traditionellen linearen Rechenans{\"a}tzen nachweisbar.}, language = {de} } @article{ElQuardiStreckertBitzetal.2011, author = {El Quardi, A. and Streckert, J. and Bitz, Andreas and M{\"u}nkner, S. and Engel, J. and Hansen, V.}, title = {New fin-line devices for radiofrequency exposure of small biological samples in vitro allowing whole-cell patch clamp recordings}, series = {Bioelectromagnetics}, volume = {32}, journal = {Bioelectromagnetics}, number = {2}, publisher = {Wiley}, address = {Weinheim}, issn = {1521-186X}, doi = {10.1002/bem.20621}, pages = {102 -- 112}, year = {2011}, abstract = {The development and analysis of three waveguides for the exposure of small biological in vitro samples to mobile communication signals at 900 MHz (GSM, Global System for Mobile Communications), 1.8 GHz (GSM), and 2 GHz (UMTS, Universal Mobile Telecommunications System) is presented. The waveguides were based on a fin-line concept and the chamber containing the samples bathed in extracellular solution was placed onto two fins with a slot in between, where the exposure field concentrates. Measures were taken to allow for patch clamp recordings during radiofrequency (RF) exposure. The necessary power for the achievement of the maximum desired specific absorption rate (SAR) of 20 W/kg (average over the mass of the solution) was approximately Pin = 50 mW, Pin = 19 mW, and Pin = 18 mW for the 900 MHz, 1800 MHz, and 2 GHz devices, respectively. At 20 W/kg, a slight RF-induced temperature elevation in the solution of no more than 0.3 °C was detected, while no thermal offsets due to the electromagnetic exposure could be detected at the lower SAR settings (2, 0.2, and 0.02 W/kg). A deviation of 10\% from the intended solution volume yielded a calculated SAR deviation of 8\% from the desired value. A maximum ±10\% variation in the local SAR could occur when the position of the patch clamp electrode was altered within the area where the cells to be investigated were located.}, language = {en} } @article{ElMoussaouiTalbiAtmaneetal.2020, author = {El Moussaoui, Noureddine and Talbi, Sofian and Atmane, Ilyas and Kassmi, Khalil and Schwarzer, Klemens and Chayeb, Hamid and Bachiri, Najib}, title = {Feasibility of a new design of a Parabolic Trough Solar Thermal Cooker (PSTC)}, series = {Solar Energy}, volume = {201}, journal = {Solar Energy}, number = {Vol. 201 (May 2020)}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0038-092X}, doi = {10.1016/j.solener.2020.03.079}, pages = {866 -- 871}, year = {2020}, abstract = {In this article, we describe the structure, the functioning, and the tests of parabolic trough solar thermal cooker (PSTC). This oven is designed to meet the needs of rural residents, including Urban, which requires stable cooking temperatures above 200 °C. The cooking by this cooker is based on the concentration of the sun's rays on a glass vacuum tube and heating of the oil circulate in a big tube, located inside the glass tube. Through two small tubes, associated with large tube, the heated oil, rise and heats the pot of cooking pot containing the food to be cooked (capacity of 5 kg). This cooker is designed in Germany and extensively tested in Morocco for use by the inhabitants who use wood from forests. During a sunny day, having a maximum solar radiation around 720 W/m2 and temperature ambient around 26 °C, maximum temperatures recorded of the small tube, the large tube and the center of the pot are respectively: 370 °C, 270 °C and 260 °C. The cooking process with food at high (fries, ..), we show that the cooking oil temperature rises to 200 °C, after 1 h of heating, the cooking is done at a temperature of 120 °C for 20 min. These temperatures are practically stable following variations and decreases in the intensity of irradiance during the day. The comparison of these results with those of the literature shows an improvement of 30-50 \% on the maximum value of the temperature with a heat storage that could reach 60 min of autonomy. All the results obtained show the good functioning of the PSTC and the feasibility of cooking food at high temperature (>200 °C).}, language = {en} } @inproceedings{ElMoussaouiKassmiAlexopoulosetal.2021, author = {El Moussaoui, Noureddine and Kassmi, Khalil and Alexopoulos, Spiros and Schwarzer, Klemens and Chayeb, Hamid and Bachiri, Najib}, title = {Simulation studies on a new innovative design of a hybrid solar distiller MSDH alimented with a thermal and photovoltaic energy}, series = {Materialstoday: Proceedings}, volume = {45}, booktitle = {Materialstoday: Proceedings}, number = {8}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2214-7853}, doi = {10.1016/j.matpr.2021.03.115}, pages = {7653 -- 7660}, year = {2021}, abstract = {In this paper, we present the structure, the simulation the operation of a multi-stage, hybrid solar desalination system (MSDH), powered by thermal and photovoltaic (PV) (MSDH) energy. The MSDH system consists of a lower basin, eight horizontal stages, a field of four flat thermal collectors with a total area of 8.4 m2, 3 Kw PV panels and solar batteries. During the day the system is heated by thermal energy, and at night by heating resistors, powered by solar batteries. These batteries are charged by the photovoltaic panels during the day. More specifically, during the day and at night, we analyse the temperature of the stages and the production of distilled water according to the solar irradiation intensity and the electric heating power, supplied by the solar batteries. The simulations were carried out in the meteorological conditions of the winter month (February 2020), presenting intensities of irradiance and ambient temperature reaching 824 W/m2 and 23 °C respectively. The results obtained show that during the day the system is heated by the thermal collectors, the temperature of the stages and the quantity of water produced reach 80 °C and 30 Kg respectively. At night, from 6p.m. the system is heated by the electric energy stored in the batteries, the temperature of the stages and the quantity of water produced reach respectively 90 °C and 104 Kg for an electric heating power of 2 Kw. Moreover, when the electric power varies from 1 Kw to 3 Kw the quantity of water produced varies from 92 Kg to 134 Kg. The analysis of these results and their comparison with conventional solar thermal desalination systems shows a clear improvement both in the heating of the stages, by 10\%, and in the quantity of water produced by a factor of 3.}, language = {en} } @article{ElBerguiAbouabdillahBouriougetal.2023, author = {El Bergui, Omnia and Abouabdillah, Aziz and Bourioug, Mohamed and Schmitz, Dominik and Biel, Markus and Aboudrare, Abdellah and Krauss, Manuel and Jomaa, Ahlem and Romuli, Sebastian and M{\"u}ller, Joachim and Fagroud, Mustapha and Bouabid, Rachid}, title = {Innovative solutions for drought: Evaluating hydrogel application on onion cultivation (Allium cepa) in Morocco}, series = {Water}, volume = {15}, journal = {Water}, number = {11}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/w15111972}, pages = {Artikel 1972}, year = {2023}, abstract = {Throughout the last decade, and particularly in 2022, water scarcity has become a critical concern in Morocco and other Mediterranean countries. The lack of rainfall during spring was worsened by a succession of heat waves during the summer. To address this drought, innovative solutions, including the use of new technologies such as hydrogels, will be essential to transform agriculture. This paper presents the findings of a study that evaluated the impact of hydrogel application on onion (Allium cepa) cultivation in Meknes, Morocco. The treatments investigated in this study comprised two different types of hydrogel-based soil additives (Arbovit® polyacrylate and Huminsorb® polyacrylate), applied at two rates (30 and 20 kg/ha), and irrigated at two levels of water supply (100\% and 50\% of daily crop evapotranspiration; ETc). Two control treatments were included, without hydrogel application and with both water amounts. The experiment was conducted in an open field using a completely randomized design. The results indicated a significant impact of both hydrogel-type dose and water dose on onion plant growth, as evidenced by various vegetation parameters. Among the hydrogels tested, Huminsorb® Polyacrylate produced the most favorable outcomes, with treatment T9 (100\%, HP, 30 kg/ha) yielding 70.55 t/ha; this represented an increase of 11 t/ha as compared to the 100\% ETc treatment without hydrogel application. Moreover, the combination of hydrogel application with 50\% ETc water stress showed promising results, with treatment T4 (HP, 30 kg, 50\%) producing almost the same yield as the 100\% ETc treatment without hydrogel while saving 208 mm of water.}, language = {en} } @article{EilmannZweifelBuchmannetal.2011, author = {Eilmann, Britta and Zweifel, Roman and Buchmann, Nina and Graf Pannatier, Elisabeth and Rigling, Andreas}, title = {Drought alters timing, quantity, and quality of wood formation in Scots pine}, series = {Journal of Experimental Botany}, volume = {62}, journal = {Journal of Experimental Botany}, number = {8}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1460-2431 (Online)}, doi = {10.1093/jxb/erq443}, pages = {2763 -- 2771}, year = {2011}, language = {en} } @article{EilmannZweifelBuchmannetal.2009, author = {Eilmann, Britta and Zweifel, Roman and Buchmann, Nina and Fonti, Patrick and Rigling, Andreas}, title = {Drought-induced adaptation of the xylem in Scots pine and pubescent oak}, series = {Tree Physiology}, volume = {29}, journal = {Tree Physiology}, number = {8}, publisher = {Heron}, address = {Victoria, BC}, issn = {0829-318X (Print)}, doi = {10.1093/treephys/tpp035}, pages = {1011 -- 1020}, year = {2009}, language = {en} } @article{EilmannWeberRiglingetal.2006, author = {Eilmann, Britta and Weber, Pascale and Rigling, Andreas and Eckstein, Dieter}, title = {Growth reactions of Pinus sylvestris L. and Quercus pubescens Willd. to drought years at a xeric site in Valais, Switzerland}, series = {Dendrochronologia}, volume = {23}, journal = {Dendrochronologia}, number = {3}, issn = {1612-0051 (Online)}, doi = {doi:10.1016/j.dendro.2005.10.002}, pages = {121 -- 132}, year = {2006}, language = {en} } @article{EilmannSterckWegneretal.2014, author = {Eilmann, Britta and Sterck, Frank J. and Wegner, L. and de Vries, Sven M. G. and von Arx, G. and Mohren, Godefridus M. J. and den Ouden, Jan and Sass-Klaassen, Ute G. W.}, title = {Wood structural differences between northern and southern beech provenances growing at a moderate site}, series = {Tree Physiology}, volume = {34}, journal = {Tree Physiology}, number = {8}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1758-4469 (Online)}, doi = {10.1093/treephys/tpu069}, pages = {882 -- 893}, year = {2014}, language = {en} } @article{EilmannRigling2012, author = {Eilmann, Britta and Rigling, Andreas}, title = {Tree-growth analyses to estimate tree species' drought tolerance}, series = {Tree Physiology}, volume = {32}, journal = {Tree Physiology}, number = {2}, editor = {Abrams, Marc}, publisher = {Oxford University Press}, address = {Oxford}, issn = {0829-318X (Print)}, doi = {10.1093/treephys/tps004}, pages = {178 -- 187}, year = {2012}, abstract = {Climate change is challenging forestry management and practices. Among other things, tree species with the ability to cope with more extreme climate conditions have to be identified. However, while environmental factors may severely limit tree growth or even cause tree death, assessing a tree species' potential for surviving future aggravated environmental conditions is rather demanding. The aim of this study was to find a tree-ring-based method suitable for identifying very drought-tolerant species, particularly potential substitute species for Scots pine (Pinus sylvestris L.) in Valais. In this inner-Alpine valley, Scots pine used to be the dominating species for dry forests, but today it suffers from high drought-induced mortality. We investigate the growth response of two native tree species, Scots pine and European larch (Larix decidua Mill.), and two non-native species, black pine (Pinus nigra Arnold) and Douglas fir (Pseudotsuga menziesii Mirb. var. menziesii), to drought. This involved analysing how the radial increment of these species responded to increasing water shortage (abandonment of irrigation) and to increasingly frequent drought years. Black pine and Douglas fir are able to cope with drought better than Scots pine and larch, as they show relatively high radial growth even after irrigation has been stopped and a plastic growth response to drought years. European larch does not seem to be able to cope with these dry conditions as it lacks the ability to recover from drought years. The analysis of trees' short-term response to extreme climate events seems to be the most promising and suitable method for detecting how tolerant a tree species is towards drought. However, combining all the methods used in this study provides a complete picture of how water shortage could limit species.}, language = {en} } @article{EilmannDobbertinRigling2013, author = {Eilmann, Britta and Dobbertin, Matthias and Rigling, Andreas}, title = {Growth response of Scots pine with different crown transparency status to drought release}, series = {Annals of Forest Science}, volume = {70}, journal = {Annals of Forest Science}, number = {7}, publisher = {Springer}, address = {Cham}, issn = {1286-4560 (Print)}, doi = {10.1007/s13595-013-0310-z}, pages = {685 -- 693}, year = {2013}, language = {en} } @article{EilmanndeVriesdenOudenetal.2013, author = {Eilmann, Britta and de Vries, Sven M. G. and den Ouden, Jan and Mohren, Godefridus M. J. and Sauren, Pascal and Sass-Klaassen, Ute G. W.}, title = {Origin matters! Difference in drought tolerance and productivity of coastal Douglas-fir (Pseudotsuga menziesii (Mirb.)) provenances}, series = {Forest Ecology and Management}, volume = {2013}, journal = {Forest Ecology and Management}, number = {302}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7042 (Online)}, doi = {doi:10.1016/j.foreco.2013.03.031}, pages = {133 -- 143}, year = {2013}, language = {en} } @article{EilmannBuchmannSiegwolfetal.2010, author = {Eilmann, Britta and Buchmann, Nina and Siegwolf, Rolf and Saurer, Matthias and Cherubini, Paolo and Rigling, Andreas}, title = {Fast response of Scots pine to improved water availability reflected in tree-ring width and δ13C}, series = {Plant, Cell and Environment}, volume = {33}, journal = {Plant, Cell and Environment}, number = {8}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1365-3040 (Online)}, doi = {10.1111/j.1365-3040.2010.02153.x}, pages = {1351 -- 1360}, year = {2010}, abstract = {Drought-induced forest decline, like the Scots pine mortality in inner-Alpine valleys, will gain in importance as the frequency and severity of drought events are expected to increase. To understand how chronic drought affects tree growth and tree-ring δ13C values, we studied mature Scots pine in an irrigation experiment in an inner-Alpine valley. Tree growth and isotope analyses were carried out at the annual and seasonal scale. At the seasonal scale, maximum δ13C values were measured after the hottest and driest period of the year, and were associated with decreasing growth rates. Inter-annual δ13C values in early- and latewood showed a strong correlation with annual climatic conditions and an immediate decrease as a response to irrigation. This indicates a tight coupling between wood formation and the freshly produced assimilates for trees exposed to chronic drought. This rapid appearance of the isotopic signal is a strong indication for an immediate and direct transfer of newly synthesized assimilates for biomass production. The fast appearance and the distinct isotopic signal suggest a low availability of old stored carbohydrates. If this was a sign for C-storage depletion, an increasing mortality could be expected when stressors increase the need for carbohydrate for defence, repair or regeneration.}, language = {en} } @article{EijckDemmelArtmannetal.2011, author = {Eijck, Lambert van and Demmel, Franz and Artmann, Gerhard and Stadtler, Andreas Maximilian}, title = {Macromolecular dynamics in red blood cells investigated using neutron spectroscopy}, series = {Journal of the Royal Society Interface}, volume = {8}, journal = {Journal of the Royal Society Interface}, number = {57}, publisher = {The Royal Society}, address = {London}, isbn = {1742-5689}, pages = {590 -- 600}, year = {2011}, language = {en} } @misc{EickmannEschFunkeetal.2014, author = {Eickmann, Matthias and Esch, Thomas and Funke, Harald and Abanteriba, Sylvester and Roosen, Petra}, title = {Biofuels in Aviation - Safety Implications of Bio-Ethanol Usage in General Aviation Aircraft}, year = {2014}, abstract = {Up in the clouds and above fuels and construction materials must be very carefully selected to ensure a smooth flight and touchdown. Out of around 38,000 single and dual-engined propeller aeroplanes, roughly a third are affected by a new trend in the fuel sector that may lead to operating troubles or even emergency landings: The admixture of bio-ethanol to conventional gasoline. Experiences with these fuels may be projected to alternative mixtures containing new components.}, language = {en} } @inproceedings{EichlerSkupinThurnetal.2019, author = {Eichler, Fabian and Skupin, Marco and Thurn, Laura and Kasch, Susanne and Schmidt, Thomas}, title = {Operating limits for beam melting of glass materials}, series = {Modern Technologies in Manufacturing (MTeM 2019)}, volume = {299}, booktitle = {Modern Technologies in Manufacturing (MTeM 2019)}, number = {Article 01004}, doi = {10.1051/matecconf/201929901004}, pages = {8 Seiten}, year = {2019}, abstract = {Laser-based Additive Manufacturing (AM) processes for the use of metals out of the powder bed have been investigated profusely and are prevalent in industry. Although there is a broad field of application, Laser Powder Bed Fusion (LPBF), also known as Selective Laser Melting (SLM) of glass is not fully developed yet. The material properties of glass are significantly different from the investigated metallic material for LPBF so far. As such, the process cannot be transferred, and the parameter limits and the process sequence must be redefined for glass. Starting with the characterization of glass powders, a parameter field is initially confined to investigate the process parameter of different glass powder using LPBFprocess. A feasibility study is carried out to process borosilicate glass powder. The effects of process parameters on the dimensional accuracy of fabricated parts out of borosilicate and hints for the post-processing are analysed and presented in this paper.}, language = {en} } @article{EichlerBalcBremenetal.2024, author = {Eichler, Fabian and Balc, Nicolae and Bremen, Sebastian and Nink, Philipp}, title = {Investigation of laser powder bed fusion parameters with respect to their influence on the thermal conductivity of 316L samples}, series = {Journal of Manufacturing and Materials Processing}, volume = {8}, journal = {Journal of Manufacturing and Materials Processing}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {2504-4494}, doi = {10.3390/jmmp8040166}, pages = {12 Seiten}, year = {2024}, abstract = {The thermal conductivity of components manufactured using Laser Powder Bed Fusion (LPBF), also called Selective Laser Melting (SLM), plays an important role in their processing. Not only does a reduced thermal conductivity cause residual stresses during the process, but it also makes subsequent processes such as the welding of LPBF components more difficult. This article uses 316L stainless steel samples to investigate whether and to what extent the thermal conductivity of specimens can be influenced by different LPBF parameters. To this end, samples are set up using different parameters, orientations, and powder conditions and measured by a heat flow meter using stationary analysis. The heat flow meter set-up used in this study achieves good reproducibility and high measurement accuracy, so that comparative measurements between the various LPBF influencing factors to be tested are possible. In summary, the series of measurements show that the residual porosity of the components has the greatest influence on conductivity. The degradation of the powder due to increased recycling also appears to be detectable. The build-up direction shows no detectable effect in the measurement series.}, language = {en} } @inproceedings{EichenbaumNikolovskiMuelhensetal.2023, author = {Eichenbaum, Julian and Nikolovski, Gjorgji and M{\"u}lhens, Leon and Reke, Michael and Ferrein, Alexander and Scholl, Ingrid}, title = {Towards a lifelong mapping approach using Lanelet 2 for autonomous open-pit mine operations}, series = {2023 IEEE 19th International Conference on Automation Science and Engineering (CASE)}, booktitle = {2023 IEEE 19th International Conference on Automation Science and Engineering (CASE)}, publisher = {IEEE}, isbn = {979-8-3503-2069-5 (Online)}, doi = {10.1109/CASE56687.2023.10260526}, pages = {8 Seiten}, year = {2023}, abstract = {Autonomous agents require rich environment models for fulfilling their missions. High-definition maps are a well-established map format which allows for representing semantic information besides the usual geometric information of the environment. These are, for instance, road shapes, road markings, traffic signs or barriers. The geometric resolution of HD maps can be as precise as of centimetre level. In this paper, we report on our approach of using HD maps as a map representation for autonomous load-haul-dump vehicles in open-pit mining operations. As the mine undergoes constant change, we also need to constantly update the map. Therefore, we follow a lifelong mapping approach for updating the HD maps based on camera-based object detection and GPS data. We show our mapping algorithm based on the Lanelet 2 map format and show our integration with the navigation stack of the Robot Operating System. We present experimental results on our lifelong mapping approach from a real open-pit mine.}, language = {en} } @misc{EhmkeFingerHojdisetal.2020, author = {Ehmke, Tobias and Finger, Sebastian and Hojdis, Nils and Kurz, Martin and Nawrocka-Herczynska, Monika}, title = {Funkeinheit und Vorrichtung mit einer Funkeinheit}, year = {2020}, abstract = {Dargestellt und beansprucht ist eine Funkeinheit mit einem Funkbauteil, einer elektrisch leitf{\"a}higen Antenne und einem Kunststoffverbindungsmittel. Das Funkbauteil weist einen Antennenanschluss auf. Das Kunststoffverbindungsmittel weist ein erstes Elastomermaterial mit elektrisch leitf{\"a}higem Zusatzmaterial auf, so dass das Kunststoffverbindungsmittel elektrisch leitf{\"a}hig ist. Das Kunststoffverbindungsmittel bildet eine mechanische und elektrisch leitf{\"a}hige Verbindung zwischen dem Antennenanschluss und der Antenne. Weiterhin wird eine Vorrichtung mit einem ein Matrixmaterial mit oder aus einem zweiten Elastomermaterial und einer Funkeinheit beschrieben und beansprucht, wobei die Funkeinheit vollst{\"a}ndig in das Matrixmaterial eingebettet ist. Die Vorrichtung kann insbesondere ein Fahrzeugreifen sein.}, language = {de} } @article{EgnerHeydeLaumannetal.2015, author = {Egner, Ralf and Heyde, Stefan and Laumann, J{\"o}rg and Prokop, Ines}, title = {Vorschl{\"a}ge f{\"u}r eine anwenderfreundliche und praxistaugliche Novellierung der allgemeinen Bemessungsregeln und Regeln f{\"u}r den Hochbau (EN 1993 Teil 1-1)}, series = {Stahlbau}, volume = {84}, journal = {Stahlbau}, number = {10}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {1437-1049}, doi = {10.1002/stab.201510321}, pages = {811 -- 822}, year = {2015}, language = {de} } @article{EgliAyerPeteretal.2010, author = {Egli, Simon and Ayer, Fran{\c{c}}ois and Peter, Martina and Eilmann, Britta and Rigling, Andreas}, title = {Is forest mushroom productivity driven by tree growth? Results from a thinning experiment}, series = {Annals of Forest Science}, volume = {67}, journal = {Annals of Forest Science}, number = {5}, publisher = {Springer}, address = {Paris}, issn = {1286-4560 (Print)}, doi = {10.1051/forest/2010011}, pages = {509}, year = {2010}, abstract = {• Most of the edible forest mushrooms are mycorrhizal and depend on carbohydrates produced by the associated trees. Fruiting patterns of these fungi are not yet fully understood since climatic factors alone do not completely explain mushroom occurrence. • The objective of this study was to retrospectively find out if changing tree growth following an increment thinning has influenced the diversity patterns and productivity of associated forest mushrooms in the fungus reserve La Chan{\´e}az, Switzerland. • The results reveal a clear temporal relationship between the thinning, the growth reaction of trees and the reaction of the fungal community, especially for the ectomycorrhizal species. The tree-ring width of the formerly suppressed beech trees and the fruit body number increased after thinning, leading to a significantly positive correlation between fruit body numbers and tree-ring width. • Fruit body production was influenced by previous annual tree growth, the best accordance was found between fruit body production and the tree-ring width two years previously. • The results support the hypothesis that ectomycorrhizal fruit body production must be linked with the growth of the associated host trees. Moreover, the findings indicate the importance of including mycorrhizal fungi as important players when discussing a tree as a carbon source or sink.}, language = {en} } @incollection{EggertZaehlWolfetal.2023, author = {Eggert, Mathias and Z{\"a}hl, Philipp M. and Wolf, Martin R. and Haase, Martin}, title = {Applying leaderboards for quality improvement in software development projects}, series = {Software Engineering for Games in Serious Contexts}, booktitle = {Software Engineering for Games in Serious Contexts}, editor = {Cooper, Kendra M.L. and Bucchiarone, Antonio}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-33337-8 (Print)}, doi = {10.1007/978-3-031-33338-5_11}, pages = {243 -- 263}, year = {2023}, abstract = {Software development projects often fail because of insufficient code quality. It is now well documented that the task of testing software, for example, is perceived as uninteresting and rather boring, leading to poor software quality and major challenges to software development companies. One promising approach to increase the motivation for considering software quality is the use of gamification. Initial research works already investigated the effects of gamification on software developers and come to promising. Nevertheless, a lack of results from field experiments exists, which motivates the chapter at hand. By conducting a gamification experiment with five student software projects and by interviewing the project members, the chapter provides insights into the changing programming behavior of information systems students when confronted with a leaderboard. The results reveal a motivational effect as well as a reduction of code smells.}, language = {en} } @inproceedings{EggertWinkelmannLohmannetal.2013, author = {Eggert, Mathias and Winkelmann, Axel and Lohmann, Patrick and Knackstedt, Ralf}, title = {The Regulatory Influence On Management Information Systems - A Contingency Perspective}, series = {ECIS 2013 Completed Research. 9}, booktitle = {ECIS 2013 Completed Research. 9}, pages = {13 S.}, year = {2013}, language = {en} } @inproceedings{EggertWeber2023, author = {Eggert, Mathias and Weber, Jannik}, title = {What drives the purchase decision in Instagram stores?}, series = {ECIS 2023 Research Papers}, booktitle = {ECIS 2023 Research Papers}, pages = {1 -- 17}, year = {2023}, abstract = {The popularity of social media and particularly Instagram grows steadily. People use the different platforms to share pictures as well as videos and to communicate with friends. The potential of social media platforms is also being used for marketing purposes and for selling products. While for Facebook and other online social media platforms the purchase decision factors are investigated several times, Instagram stores remain mainly unattended so far. The present research work closes this gap and sheds light into decisive factors for purchasing products offered in Instagram stores. A theoretical research model, which contains selected constructs that are assumed to have a significant influence on Instagram user´s purchase intention, is developed. The hypotheses are evaluated by applying structural equation modelling on survey data containing 127 relevant participants. The results of the study reveal that 'trust', 'personal recommendation', and 'usability' significantly influences user's buying intention in Instagram stores.}, language = {en} } @inproceedings{EggertStanke2020, author = {Eggert, Mathias and Stanke, Max-Alexander}, title = {Adoption of Integrated Voice Assistants in Health Care- Requirements and Design Guidelines}, publisher = {GITO}, address = {Berlin}, doi = {10.30844/wi_2020_k2-eggert}, pages = {16 Seiten}, year = {2020}, abstract = {Integrated voice assistants (IVA) receive more and more attention and are widespread for entertainment use cases, such as radio hearing or web searches. At the same time, the health care segment suffers in process inefficiency and missing staff, whereas the usage of IVA has the potential to improve caring processes and patient satisfaction. By applying a design science approach and based on a qualitative study, we identify IVA requirements, barriers and design guidelines for the health care sector. The results reveal three important IVA functions: the ability to set appointments with care service staff, the documentation of health history and the communication with service staff. Integration, system stability and volume control are the most important nonfunctional requirements. Based on the interview results and project experiences, six design and implementation guidelines are derived.}, language = {en} } @inproceedings{EggertSchadeBroehletal.2024, author = {Eggert, Mathias and Schade, Maximilian and Br{\"o}hl, Florian and Moriz, Alexander}, title = {Generating synthetic LiDAR point cloud data for object detection using the Unreal Game Engine}, series = {Design Science Research for a Resilient Future (DESRIST 2024)}, booktitle = {Design Science Research for a Resilient Future (DESRIST 2024)}, editor = {Mandviwalla, Munir and S{\"o}llner, Matthias and Tuunanen, Tuure}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-61174-2 (Print)}, doi = {10.1007/978-3-031-61175-9_20}, pages = {295 -- 309}, year = {2024}, abstract = {Object detection based on artificial intelligence is ubiquitous in today's computer vision research and application. The training of the neural networks for object detection requires large and high-quality datasets. Besides datasets based on image data, datasets derived from point clouds offer several advantages. However, training datasets are sparse and their generation requires a lot of effort, especially in industrial domains. A solution to this issue offers the generation of synthetic point cloud data. Based on the design science research method, the work at hand proposes an approach and its instantiation for generating synthetic point cloud data based on the Unreal Engine. The point cloud quality is evaluated by comparing the synthetic cloud to a real-world point cloud. Within a practical example the applicability of the Unreal Game engine for synthetic point cloud generation could be successfully demonstrated.}, language = {de} } @incollection{EggertMoulen2023, author = {Eggert, Mathias and Moulen, Tobias}, title = {Auswahl von Gesch{\"a}ftsprozessen zur Anwendung von Robotic Process Automation - Vergleich relevanter Kriterien aus Theorie und Praxis}, series = {Robotik in der Wirtschaftsinformatik}, booktitle = {Robotik in der Wirtschaftsinformatik}, editor = {D'Onofrio, Sara and Meinhardt, Stefan}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-39620-6 (Print)}, pages = {107 -- 129}, year = {2023}, abstract = {Die Auswahl der passenden Gesch{\"a}ftsprozesse f{\"u}r eine Automatisierung mittels Robotic Process Automation (RPA) ist f{\"u}r den Erfolg von RPA-Projekten entscheidend. Das vorliegende Kapitel liefert daf{\"u}r Selektionskriterien, die aus einer qualitativen Studie mit elf interviewten RPA-Experten aus dem Versicherungsumfeld resultieren. Das Ergebnis umfasst eine gewichtete Liste von sieben Dimensionen und 51 Prozesskriterien, welche die Automatisierung mit Softwarerobotern beg{\"u}nstigen beziehungsweise deren Nichterf{\"u}llung eine Umsetzung erschweren oder sogar verhindern. Die drei wichtigsten Kriterien zur Auswahl von Gesch{\"a}ftsprozessen f{\"u}r die Automatisierung mittels RPA umfassen die Entlastung der an dem Prozess mitwirkenden Mitarbeiter (Arbeitnehmerentlastung), die Ausf{\"u}hrbarkeit des Prozesses mittels Regeln (Regelbasierte Prozessteuerung) sowie ein positiver Kosten-Nutzen-Vergleich. Auf diesen Ergebnissen aufbauend wird ein Vergleich mit den bereits bekannten Selektionskriterien aus der Literatur erstellt und diskutiert. Praktiker k{\"o}nnen die Ergebnisse verwenden, um eine systematische Auswahl von RPA-relevanten Prozessen vorzunehmen. Aus wissenschaftlicher Perspektive stellen die Ergebnisse eine Grundlage zur Erkl{\"a}rung des Erfolgs und Misserfolgs von RPA-Projekten dar.}, language = {de} } @inproceedings{EggertKriska2022, author = {Eggert, Mathias and Kriska, Melina}, title = {Gamification for software development processes - relevant affordances and design principles}, series = {Proceedings of the 55th Hawaii International Conference on System Sciences}, booktitle = {Proceedings of the 55th Hawaii International Conference on System Sciences}, publisher = {HICSS Publishing}, address = {Honolulu}, isbn = {978-0-9981331-5-7}, doi = {10.24251/HICSS.2022.200}, pages = {1614 -- 1623}, year = {2022}, abstract = {A Gamified Information System (GIS) implements game concepts and elements, such as affordances and game design principles to motivate people. Based on the idea to develop a GIS to increase the motivation of software developers to perform software quality tasks, the research work at hand aims at investigating relevant requirements from that target group. Therefore, 14 interviews with software development experts are conducted and analyzed. According to the results, software developers prefer the affordances points, narrative storytelling in a multiplayer and a round-based setting. Furthermore, six design principles for the development of a GIS are derived.}, language = {en} } @article{EggertKnackstedtFleischeretal.2013, author = {Eggert, Mathias and Knackstedt, Ralf and Fleischer, Stefan and Becker, J{\"o}rg}, title = {The Potential of Configurative Reference Modeling for Business to Government Reporting - A Modeling Technique and its Evaluation}, series = {e-Service Journal}, volume = {9}, journal = {e-Service Journal}, number = {1}, publisher = {Indiana University Press}, address = {Bloomington}, issn = {1528-8234}, pages = {28 -- 59}, year = {2013}, language = {en} } @inproceedings{EggertEdelbauer2020, author = {Eggert, Mathias and Edelbauer, Thomas Rudolf}, title = {Gamified Information Systems for Assisted Living Facilities - Relevant Design Guidelines, Affordances and Adoption Barriers}, publisher = {GITO}, address = {Berlin}, doi = {10.30844/wi_2020_f3-eggert}, pages = {16 Seiten}, year = {2020}, abstract = {Gamification and gamified information systems (GIS) apply video game elements to encourage the work on boring and everyday tasks. Meanwhile, several research works provide evidence that gamification increases efficiency and effectivity of such tasks. The paper at hand investigates the health care sector, which is challenged with cost pressure and suffers in process efficiency. We hypothesize that GIS may improve the efficiency and quality of care processes. By applying an interview-based content analysis, the paper at hand evaluates gamification elements in an assisted living environment and provides three research contributions. First, insights into relevant GIS affordances and application examples for assisted living facilities are given. Second, assisted living experts evaluate GIS design guidelines. Both the relevant affordances and design principles comprise a basis for the development of a GIS for social workers in assisted living facilities. Third, potential adoption barriers and design guidelines for GIS in assisted living are presented.}, language = {en} } @inproceedings{EggertDyong2022, author = {Eggert, Mathias and Dyong, Julian}, title = {Applying process mining in small and medium sized IT enterprises - challenges and guidelines}, series = {Business Process Management, 20th International Conference, BPM 2022, Proceedings}, booktitle = {Business Process Management, 20th International Conference, BPM 2022, Proceedings}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-16103-2}, doi = {10.1007/978-3-031-16103-2_11}, pages = {125 -- 142}, year = {2022}, abstract = {Process mining gets more and more attention even outside large enterprises and can be a major benefit for small and medium sized enterprises (SMEs) to gain competitive advantages. Applying process mining is challenging, particularly for SMEs because they have less resources and process maturity. So far, IS researchers analyzed process mining challenges with a focus on larger companies. This paper investigates the application of process mining by means of a case study and sheds light into the particular challenges of an IT SME. The results reveal 13 SME process mining challenges and seven guidelines to address them. In this way, the paper contributes to the understanding of process mining application in SME and shows similarities and differences to larger companies.}, language = {en} } @inproceedings{EggertChwallekWollf2022, author = {Eggert, Mathias and Chwallek, Constanze and Wollf, Frederik}, title = {The role of environmental factors for the success of digital start-ups}, series = {ECIS 2022 Research Papers}, booktitle = {ECIS 2022 Research Papers}, pages = {1 -- 16}, year = {2022}, abstract = {Digital start-ups are perceived as an engine for innovation and job promotor. While success factors for non-IT start-ups have already been extensively researched, this study sheds light on digital entrepreneurs, whose business model relies primarily on services based on digital technologies. Applying the Grounded Theory method, we identify relevant environmental success factors for digital entrepreneurs. The study's research contribution is threefold. First, we provide 16 relevant and less relevant environmental success factors, which enables a comparison with prior identified factors. We found out that several prior environmental success factors, such as accessibility to transportation or the availability of land and facilities are less relevant for a digital entrepreneur. Second, we derive and discuss hypotheses for the influence of these factors on digital start-up success. Third, we present a theoretical model that lays the foundation for explaining the environmental influence on digital entrepreneurship success.}, language = {de} } @article{EggertAlberts2020, author = {Eggert, Mathias and Alberts, Jens}, title = {Frontiers of business intelligence and analytics 3.0: a taxonomy-based literature review and research agenda}, series = {Business Research}, volume = {2020}, journal = {Business Research}, number = {13}, publisher = {Springer}, address = {Heidelberg}, issn = {2198-2627}, doi = {10.1007/s40685-020-00108-y}, pages = {685 -- 739}, year = {2020}, abstract = {Researching the field of business intelligence and analytics (BI \& A) has a long tradition within information systems research. Thereby, in each decade the rapid development of technologies opened new room for investigation. Since the early 1950s, the collection and analysis of structured data were the focus of interest, followed by unstructured data since the early 1990s. The third wave of BI \& A comprises unstructured and sensor data of mobile devices. The article at hand aims at drawing a comprehensive overview of the status quo in relevant BI \& A research of the current decade, focusing on the third wave of BI \& A. By this means, the paper's contribution is fourfold. First, a systematically developed taxonomy for BI \& A 3.0 research, containing seven dimensions and 40 characteristics, is presented. Second, the results of a structured literature review containing 75 full research papers are analyzed by applying the developed taxonomy. The analysis provides an overview on the status quo of BI \& A 3.0. Third, the results foster discussions on the predicted and observed developments in BI \& A research of the past decade. Fourth, research gaps of the third wave of BI \& A research are disclosed and concluded in a research agenda.}, language = {en} } @inproceedings{Eggert2019, author = {Eggert, Mathias}, title = {Understanding the acceptance of smart home-based insurances}, series = {Proceedings of the 27th European Conference on Information Systems (ECIS), Stockholm \& Uppsala, Sweden, June 8-14, 2019}, booktitle = {Proceedings of the 27th European Conference on Information Systems (ECIS), Stockholm \& Uppsala, Sweden, June 8-14, 2019}, isbn = {978-1-7336325-0-8}, pages = {1 -- 15}, year = {2019}, language = {en} } @incollection{Eggert2019, author = {Eggert, Mathias}, title = {Big Data Research - How to Structure the Changes of the Past Decade?}, series = {The Art of Structuring}, booktitle = {The Art of Structuring}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-06234-7}, doi = {10.1007/978-3-030-06234-7_26}, pages = {271 -- 281}, year = {2019}, abstract = {In the past decade, many IS researchers focused on researching the phenomenon of Big Data. At the same time, the relevance of data protection gets more attention than ever before. In particular, since the enactment of the European General Data Protection Regulation in May 2018 Information Systems research should provide answers for protecting personal data. The article at hand presents a structuring framework for Big Data research outcome and the consideration of data protection. IS Researchers might use the framework in order to structure Big Data literature and to identify research gaps that should be addressed in the future.}, language = {en} } @inproceedings{EdipGarevskiButenwegetal.2014, author = {Edip, Kemal and Garevski, Mihail and Butenweg, Christoph and Sheshov, Vlatko and Bojadjieva, Julijana and Gjorgjiev, Igor}, title = {New coupled finite-infinite element approach for wave propagation simulation of unbounded soil media}, series = {2nd European Conference on Earthquake Engineering and Seismology 2014 (2nd ECEES) : joint event of the 15th European Conference on Earthquake Engineering and the 34th General Assembly of the European Seismological Commission : Istanbul, Turkey, 25-29 August 2014 / European Association for Earthquake Engineering (EAEE) ; Vol. 2}, booktitle = {2nd European Conference on Earthquake Engineering and Seismology 2014 (2nd ECEES) : joint event of the 15th European Conference on Earthquake Engineering and the 34th General Assembly of the European Seismological Commission : Istanbul, Turkey, 25-29 August 2014 / European Association for Earthquake Engineering (EAEE) ; Vol. 2}, publisher = {Curran Associates, Inc.}, address = {Red Hook, NY}, organization = {European Conference on Earthquake Engineering and Seismology <2, 2014, Istanbul>}, isbn = {978-1-5108-1021-1}, pages = {1556 -- 1561}, year = {2014}, language = {en} } @article{EdipGarevskiButenwegetal.2013, author = {Edip, Kemal and Garevski, Mihail and Butenweg, Christoph and Sesov, Vlatko and Cvetanovska, Julijana and Gjorgiev, Igor}, title = {Numerical simulation of geotechnical problems by coupled finite and infinite elements}, series = {Journal of civil engineering and architecture}, volume = {7}, journal = {Journal of civil engineering and architecture}, number = {1}, publisher = {David Publishing}, address = {Libertyville}, issn = {1934-7359 (E-Journal)}, pages = {68 -- 77}, year = {2013}, language = {en} } @inproceedings{EdipGarevskiButenwegetal.2014, author = {Edip, Kemal and Garevski, Mihail and Butenweg, Christoph and Sesov, Vlatko and Bojadjieva, Julijana and Gjorgjiev, Igor}, title = {Boundary effects on seismic analysis of multi-storey frames considering soil structure interaction phenomenon}, series = {Seismic design of industrial facilities : proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) ; [Aachen, 26. - 27. September 2013] / Chair of Structural Statics and Dynamics, RWTH Aachen. Sven Klinkel ..., ed}, booktitle = {Seismic design of industrial facilities : proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) ; [Aachen, 26. - 27. September 2013] / Chair of Structural Statics and Dynamics, RWTH Aachen. Sven Klinkel ..., ed}, publisher = {Springer Vieweg}, address = {Wiesbaden}, organization = {International Conference on Seismic Design of Industrial Facilities <2013, Aachen>}, isbn = {978-3-658-02809-1 (Print) ; 978-3-658-02810-7}, doi = {10.1007/978-3-658-02810-7_47}, pages = {569 -- 576}, year = {2014}, language = {en} } @article{EdipSesovButenwegetal.2018, author = {Edip, K. and Sesov, V. and Butenweg, Christoph and Bojadjieva, J.}, title = {Development of coupled numerical model for simulation of multiphase soil}, series = {Computers and Geotechnics}, volume = {96}, journal = {Computers and Geotechnics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0266-352X}, doi = {10.1016/j.compgeo.2017.08.016}, pages = {118 -- 131}, year = {2018}, abstract = {In this paper, a coupled multiphase model considering both non-linearities of water retention curves and solid state modeling is proposed. The solid displacements and the pressures of both water and air phases are unknowns of the proposed model. The finite element method is used to solve the governing differential equations. The proposed method is demonstrated through simulation of seepage test and partially consolidation problem. Then, implementation of the model is done by using hypoplasticity for the solid phase and analyzing the fully saturated triaxial experiments. In integration of the constitutive law error controlling is improved and comparisons done accordingly. In this work, the advantages and limitations of the numerical model are discussed.}, language = {en} } @book{EckeyKurth2010, author = {Eckey, Ulrich and Kurth, Fabian}, title = {Hamburg 2010 : Hafencity, Jungfernstieg, IBA 2013, Chilehaus, Speicherstadt, BRT Architekten.}, publisher = {FH Aachen}, address = {Aachen}, pages = {129 S. : zahlr. Ill.}, year = {2010}, language = {de} } @book{Eckey2011, author = {Eckey, Ulrich}, title = {Paris 2011 / [Organisation: Ulrich Eckey ... Red.: Felix Bockmeyer]}, publisher = {FH Aachen}, address = {Aachen}, pages = {123 S. : zahlr. Ill}, year = {2011}, language = {de} } @book{Eckey2008, author = {Eckey, Ulrich}, title = {Aachen, K{\o}benhavn, 2008 / Damm, Patricia ; [Hrsg: Eckey, Ulrich]}, publisher = {FH Aachen}, address = {Aachen}, pages = {129 S. zahlr. Ill.}, year = {2008}, language = {de} } @article{EckertRudolphGuoetal.2018, author = {Eckert, Alexander and Rudolph, Tobias and Guo, Jiaqi and Mang, Thomas and Walther, Andreas}, title = {Exceptionally Ductile and Tough Biomimetic Artificial Nacre with Gas Barrier Function}, series = {Advanced Materials}, volume = {30}, journal = {Advanced Materials}, number = {32}, publisher = {Wiley-VCH}, doi = {10.1002/adma.201802477}, pages = {Article number 1802477}, year = {2018}, abstract = {Synthetic mimics of natural high-performance structural materials have shown great and partly unforeseen opportunities for the design of multifunctional materials. For nacre-mimetic nanocomposites, it has remained extraordinarily challenging to make ductile materials with high stretchability at high fractions of reinforcements, which is however of crucial importance for flexible barrier materials. Here, highly ductile and tough nacre-mimetic nanocomposites are presented, by implementing weak, but many hydrogen bonds in a ternary nacre-mimetic system consisting of two polymers (poly(vinyl amine) and poly(vinyl alcohol)) and natural nanoclay (montmorillonite) to provide efficient energy dissipation and slippage at high nanoclay content (50 wt\%). Tailored interactions enable exceptional combinations of ductility (close to 50\% strain) and toughness (up to 27.5 MJ m⁻³). Extensive stress whitening, a clear sign of high internal dynamics at high internal cohesion, can be observed during mechanical deformation, and the materials can be folded like paper into origami planes without fracture. Overall, the new levels of ductility and toughness are unprecedented in highly reinforced bioinspired nanocomposites and are of critical importance to future applications, e.g., as barrier materials needed for encapsulation and as a printing substrate for flexible organic electronics.}, language = {en} } @article{EckertAbbasiMangetal.2020, author = {Eckert, Alexander and Abbasi, Mozhdeh and Mang, Thomas and Saalw{\"a}chter, Kay and Walther, Andreas}, title = {Structure, Mechanical Properties, and Dynamics of Polyethylenoxide/Nanoclay Nacre-Mimetic Nanocomposites}, series = {Macromolecules}, volume = {53}, journal = {Macromolecules}, number = {5}, publisher = {ACS Publications}, address = {Washington, DC}, issn = {1520-5835}, doi = {10.1021/acs.macromol.9b01931}, pages = {1716 -- 1725}, year = {2020}, abstract = {Nacre-mimetic nanocomposites based on high fractions of synthetic high-aspect-ratio nanoclays in combination with polymers are continuously pushing boundaries for advanced material properties, such as high barrier against oxygen, extraordinary mechanical behavior, fire shielding, and glass-like transparency. Additionally, they provide interesting model systems to study polymers under nanoconfinement due to the well-defined layered nanocomposite arrangement. Although the general behavior in terms of forming such layered nanocomposite materials using evaporative self-assembly and controlling the nanoclay gallery spacing by the nanoclay/polymer ratio is understood, some combinations of polymer matrices and nanoclay reinforcement do not comply with the established models. Here, we demonstrate a thorough characterization and analysis of such an unusual polymer/nanoclay pair that falls outside of the general behavior. Poly(ethylene oxide) (PEO) and sodium fluorohectorite form nacre-mimetic, lamellar nanocomposites that are completely transparent and show high mechanical stiffness and high gas barrier, but there is only limited expansion of the nanoclay gallery spacing when adding increasing amounts of polymer. This behavior is maintained for molecular weights of PEO varied over four orders of magnitude and can be traced back to depletion forces. By careful investigation via X-ray diffraction and proton low-resolution solid-state NMR, we are able to quantify the amount of mobile and immobilized polymer species in between the nanoclay galleries and around proposed tactoid stacks embedded in a PEO matrix. We further elucidate the unusual confined polymer dynamics, indicating a relevant role of specific surface interactions.}, language = {en} } @misc{EcclestonDrummondMiddletonetal.2020, author = {Eccleston, Paul and Drummond, Rachel and Middleton, Kevin and Bishop, Georgia and Caldwell, Andrew and Desjonqueres, Lucile and Tosh, Ian and Cann, Nick and Crook, Martin and Hills, Matthew and Pearson, Chris and Simpson, Caroline and Stamper, Richard and Tinetti, Giovanna and Pascale, Enzo and Swain, Mark and Holmes, Warren A. and Wong, Andre and Puig, Ludovic and Pilbratt, G{\"o}ran and Linder, Martin and Boudin, Nathalie and Ertel, Hanno and Gambicorti, Lisa and Halain, Jean-Philippe and Pace, Emanuele and Vilardell, Francesc and G{\´o}mez, Jos{\´e} M. and Colom{\´e}, Josep and Amiaux, J{\´e}r{\^o}me and Cara, Christophe and Berthe, Michel and Moreau, Vincent and Morgante, Gianluca and Malaguti, Giuseppe and Alonso, Gustavo and {\´A}lvarez, Javier P. and Ollivier, Marc and Philippon, Anne and Hellin, Marie-Laure and Roose, Steve and Frericks, Martin and Krijger, Matthijs and Rataj, Miroslaw and Wawer, Piotr and Skup, Konrad and Sobiecki, Mateusz and Christian Jessen, Niels and M{\o}ller Pedersen, S{\o}ren and Hargrave, Peter and Griffin, Matt and Ottensamer, Roland and Hunt, Thomas and Rust, Duncan and Saleh, Aymen and Winter, Berend and Focardi, Mauro and Da Deppo, Vania and Zuppella, Paola and Czupalla, Markus}, title = {The ARIEL payload: A technical overview}, series = {Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave}, volume = {11443}, journal = {Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave}, editor = {Lystrup, Makenzie and Perrin, Marshall D. and Batalha, Natalie and Siegler, Nicholas and Tong, Edward C.}, publisher = {SPIE}, address = {Washington}, doi = {10.1117/12.2561478}, pages = {114430Z}, year = {2020}, abstract = {The Atmospheric Remote-Sensing Infrared Exoplanet Large-survey, ARIEL, has been selected to be the next (M4) medium class space mission in the ESA Cosmic Vision programme. From launch in 2028, and during the following 4 years of operation, ARIEL will perform precise spectroscopy of the atmospheres of ~1000 known transiting exoplanets using its metre-class telescope. A three-band photometer and three spectrometers cover the 0.5 µm to 7.8 µm region of the electromagnetic spectrum. This paper gives an overview of the mission payload, including the telescope assembly, the FGS (Fine Guidance System) - which provides both pointing information to the spacecraft and scientific photometry and low-resolution spectrometer data, the ARIEL InfraRed Spectrometer (AIRS), and other payload infrastructure such as the warm electronics, structures and cryogenic cooling systems.}, language = {en} } @masterthesis{Ebert2022, type = {Bachelor Thesis}, author = {Ebert, Julia}, title = {Die unsichtbare Gefahr : Mikroplastik}, publisher = {FH Aachen}, address = {Aachen}, school = {Fachhochschule Aachen}, pages = {23 Seiten}, year = {2022}, abstract = {Bereits ein einziger pr{\"u}fender Blick in einen klassischen Privathaushalt vermittelt einen ersten Eindruck davon, wie allgegenw{\"a}rtig Kunststoff im menschlichen Leben ist. H{\"a}ufig {\"u}bersehen wird dabei Mikroplastik, welches im Verh{\"a}ltnis zu seinen gravierenden Auswirkungen auf Mensch und Umwelt in der {\"o}ffentlichen Diskussion bislang noch wenig Beachtung findet. Das f{\"u}hrt dazu, dass die Problematik durch unaufgekl{\"a}rten Konsum weiter angefacht wird. Die Gestaltung des visuellen Magazins m{\"o}chte {\"u}ber die Konsequenzen von Mikroplastik aufkl{\"a}ren und das Bewusstsein {\"u}ber das pers{\"o}nliche Konsumverhalten sch{\"a}rfen. Mithilfe kurzer Infotexte wird die Problematik aus der wissenschaftlichen Perspektive der Umweltorganisationen beleuchtet und durch ausgew{\"a}hlte Mikroskop-Aufnahmen illustriert. Hiermit werden unsichtbare Krisentreiber endlich sichtbar gemacht.}, language = {de} } @masterthesis{Eberhardt2022, type = {Bachelor Thesis}, author = {Eberhardt, Dag Norman}, title = {"I Was Here!"}, publisher = {FH Aachen}, address = {Aachen}, pages = {77 Seiten}, year = {2022}, abstract = {Die Menschheit erlebt aktuell Zeiten drastischen Wandels. Deswegen k{\"o}nnte es wohltun, einen Blick in die Vergangenheit zu werfen und sich darauf zu besinnen, wo die Menschen herkommen, wer sie waren und was seitdem bereits erreicht wurde. In dieser Grafiknovelle wird ein kleiner Steinzeitjunge namens Muami begleitet, der vor 35.000 Jahren die Verg{\"a}nglichkeit des Lebens kennenlernt. Im Verlauf des folgenden Jahres erfindet er die Selbstverewigung in der H{\"o}hlenmalerei. Mit seiner Figur soll aufgezeigt werden, dass die fr{\"u}hen Europ{\"a}er eben keine primitiven Halbaffen, sondern intelligente und außerdem zutiefst kreative Menschen waren. Trotz ihrer rauen Umwelt waren ihre Sorgen und Freuden den unseren gar nicht so un{\"a}hnlich. „I Was Here!" ist ein Versuch, ein authentisches Portr{\"a}t jener Menschen zu schaffen und dabei ihrer Welt, ihrem Leben und ihrer Kunst gerecht zu werden.}, language = {de} } @article{DuennwaldDemirSiegertetal.2001, author = {D{\"u}nnwald, Thomas and Demir, Ayhan S. and Siegert, Petra and Pohl, Martina and M{\"u}ller, Michael}, title = {ChemInform Abstract: Enantioselective synthesis of (S)-2-Hydroxypropanone derivatives by Benzoylformate Decarboxylase Catalyzed C—C Bond Formation}, series = {Cheminform}, volume = {Vol. 32}, journal = {Cheminform}, number = {Iss. 4}, issn = {1522-2667 (E-Journal); 0931-7597 (Print)}, pages = {Publ. online}, year = {2001}, language = {en} } @article{DuennwaldDemirSiegertetal.2000, author = {D{\"u}nnwald, Thomas and Demir, Ayhan S. and Siegert, Petra and Pohl, Martina and M{\"u}ller, Michael}, title = {Enantioselective Synthesis of (S)-2-Hydroxypropanone Derivatives by Benzoylformate Decarboxylase Catalyzed C-C Bond Formation}, series = {European journal of organic chemistry}, volume = {Vol. 2000}, journal = {European journal of organic chemistry}, number = {Iss. 11}, issn = {0365-5490 (E-Journal); 1099-0690 (E-Journal); 0075-4617 (Print); 0170-2041 (Print); 0947-3440 (Print); 1434-193X (Print); 1434-243X (Print)}, pages = {2161 -- 2170}, year = {2000}, language = {en} } @article{DuenkelmannKolterJungNitscheetal.2002, author = {D{\"u}nkelmann, Pascal and Kolter-Jung, Doris and Nitsche, Adam and Demir, Ayhan S. and Siegert, Petra and Lingen, Bettina and Baumann, Martin and Pohl, Martina and M{\"u}ller, Michael}, title = {Development of a donor-acceptor concept for enzymatic cross-coupling reactions of adehydes : the first asymmetric cross-benzoin condensation}, series = {Journal of the American Chemical Society}, volume = {Vol. 124}, journal = {Journal of the American Chemical Society}, issn = {1520-5126 (E-Journal); 0002-7863 (Print)}, pages = {12084 -- 12085}, year = {2002}, language = {en} } @inproceedings{DuemmlerOetringerGoettsche2020, author = {D{\"u}mmler, Andreas and Oetringer, Kerstin and G{\"o}ttsche, Joachim}, title = {Auslegungstool zur energieeffizienten K{\"u}hlung von Geb{\"a}uden}, series = {DKV-Tagung 2020, AA IV}, booktitle = {DKV-Tagung 2020, AA IV}, pages = {1109}, year = {2020}, abstract = {Thematisch widmet sich das Projekt Coolplan- AIR der Fortentwicklung und Feldvalidierung eines Berechnungs- und Auslegungstools zur energieeffizienten K{\"u}hlung von Geb{\"a}uden mit luftgest{\"u}tzten Systemen. Neben dem Aufbau und der Weiterentwicklung von Simulationsmodellen erfolgen Vermessungen der Gesamtsysteme anhand von Praxisanlagen im Feld. Der Schwerpunkt des Projekts liegt auf der Vermessung, Simulation und Integration rein luftgest{\"u}tzter K{\"u}hltechnologien. Im Bereich der K{\"a}lteerzeugung wurden Luft- Luft- W{\"a}rmepumpen, Anlagen zur adiabaten K{\"u}hlung bzw. offene K{\"u}hlt{\"u}rme und VRF- Multisplit- Systeme (Variable Refrigerant Flow) im Feld bzw. auf dem Teststand der HSD vermessen. Die Komponentenmodelle werden in die Matlab/Simulink- Toolbox CARNOT integriert und anschließend auf Basis der zuvor erhaltenen Messdaten validiert. Einerseits erlauben die Messungen das Betriebsverhalten von Anlagenkomponenten zu analysieren. Andererseits soll mit der Vermessung im Feld gepr{\"u}ft werden, inwieweit die Simulationsmodelle, welche im Vorg{\"a}ngerprojekt aus Pr{\"u}fstandmessungen entwickelt wurden, auch f{\"u}r gr{\"o}ßere Ger{\"a}teleistungen G{\"u}ltigkeit besitzen. Die entwickelten und implementierten Systeme, bestehend aus verschiedensten Anlagenmodellen und Regelungskomponenten, werden gepr{\"u}ft und dahingehend qualifiziert, dass sie in Standard- Auslegungstools zuverl{\"a}ssig verwendet werden k{\"o}nnen. Zus{\"a}tzlich wird ein energetisches Monitoring eines H{\"o}rsaalgeb{\"a}udes am Campus J{\"u}lich durchgef{\"u}hrt, das u. a. zur Validierung der K{\"u}hllastberechnungen in g{\"a}ngigen Simulationsmodelle genutzt werden kann.}, language = {de} } @inproceedings{DoeringZillerHortmanns2003, author = {D{\"o}ring, Bernd and Ziller, Claudia and Hortmanns, M.}, title = {Ventilation of double facades by external dynamic wind pressure}, series = {11th International Conference on Wind Engineering. 1}, booktitle = {11th International Conference on Wind Engineering. 1}, publisher = {The Wind Science and Engineering Research Center}, address = {Lubbock, Tex.}, organization = {International Conference on Wind Engineering <11, 2003, Lubbock, Tex.>}, pages = {721 -- 730}, year = {2003}, language = {en} } @inproceedings{DoeringSedlacek2004, author = {D{\"o}ring, Bernd and Sedlacek, Gerhard}, title = {Improvement of thermal comfort in light weight buildings made of steel with new concepts for slab systems}, series = {10th Nordic Steel Construction Conference, Copenhagen, Denmark 7-9. June 2004: NSCC 2004 : proceedings}, booktitle = {10th Nordic Steel Construction Conference, Copenhagen, Denmark 7-9. June 2004: NSCC 2004 : proceedings}, publisher = {Danish Steel Inst.}, address = {Copenhagen}, organization = {Nordic Steel Construction Conference <10, 2004, Copenhagen>}, pages = {35 -- 44}, year = {2004}, language = {en} } @article{DoeringRegerKuhnhenneetal.2015, author = {D{\"o}ring, Bernd and Reger, Vitali and Kuhnhenne, Markus and Feldmann, Markus and Kesti, Jyrki and Lawson, Mark and Botti, Andrea}, title = {Steel solutions for enabling zero-energy buildings}, series = {Steel Construction - Design and Research}, volume = {8}, journal = {Steel Construction - Design and Research}, number = {3}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {1867-0539}, doi = {10.1002/stco.201510029}, pages = {194 -- 200}, year = {2015}, language = {en} } @techreport{DoeringKuhnhenneVassartetal.2009, author = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Vassart, O. and Harper, C.}, title = {Integrated pre-fabricated steel technologies for the multi-storey sector}, publisher = {Office for Official Publ. of the European Communities}, address = {Luxembourg}, isbn = {9789279113192}, pages = {149 S.}, year = {2009}, language = {de} } @article{DoeringKuhnhenneHellbergetal.2008, author = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Hellberg, Jan and Feldmann, Markus}, title = {Aktive und passive Temperierung eines Stahldeckensystems : thermische Bauteilaktivierung : numerische und messtechnische Untersuchungen. T. 2.}, series = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik}, volume = {Bd. 59}, journal = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik}, number = {H. 11}, issn = {1436-5103}, pages = {37 -- 41}, year = {2008}, language = {de} } @article{DoeringKuhnhenneHellbergetal.2008, author = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Hellberg, Jan and Feldmann, Markus}, title = {Aktive und passive Temperierung eines Stahldeckensystems : numerische und messtechnische Untersuchungen. T. 1}, series = {HLH : L{\"u}ftung, Klima, Heizung, Sanit{\"a}r, Geb{\"a}udetechnik}, volume = {Bd. 59}, journal = {HLH : L{\"u}ftung, Klima, Heizung, Sanit{\"a}r, Geb{\"a}udetechnik}, number = {H. 10}, issn = {1436-5103, 0017-9906, 1434-422X, 1436-5103}, pages = {54 -- 60}, year = {2008}, language = {de} } @inproceedings{DoeringKuhnhenneFeldmann2011, author = {D{\"o}ring, Bernd and Kuhnhenne, Markus and Feldmann, Markus}, title = {Floor systems - key elements for sustainable multi-storey buildings}, series = {SB11 Helsinki World Sustainable Building Conference : 18. - 21.10.2011}, booktitle = {SB11 Helsinki World Sustainable Building Conference : 18. - 21.10.2011}, organization = {World Sustainable Building Conference <2011, Helsinki>}, pages = {1 -- 6}, year = {2011}, language = {en} } @article{DoeringKendrickLawson2013, author = {D{\"o}ring, Bernd and Kendrick, C. and Lawson, R. M.}, title = {Thermal capacity of composite floor slabs}, series = {Energy and buildings}, volume = {Vol. 67}, journal = {Energy and buildings}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-6178 (E-Journal); 0378-7788 (Print)}, pages = {531 -- 539}, year = {2013}, language = {en} } @misc{DoeringHechler2003, author = {D{\"o}ring, Bernd and Hechler, Oliver}, title = {Verfahren und Vorrichtung zu Temperierung von Bauteilen : Offenlegungsschrift}, publisher = {Deutsches Patent- und Markenamt}, address = {M{\"u}nchen}, pages = {9 S. : graph. Darst.}, year = {2003}, language = {de} } @article{DoeringHechlerWeberetal.2004, author = {D{\"o}ring, Bernd and Hechler, O. and Weber, F. and Sedlacek, Gerhard}, title = {Thermische Aktivierung von Fertigteildecken}, series = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik}, volume = {Jg. 55}, journal = {HLH L{\"u}ftung/Klima, Heizung/Sanit{\"a}r, Geb{\"a}udetechnik}, number = {Nr. 5}, issn = {1436-5103}, pages = {24 -- 35}, year = {2004}, language = {de} } @article{DoeringFeldmannKuhnhenneetal.2011, author = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus and M{\"u}ller, Dirk}, title = {Phasenwechselmaterial im Metallleichtbau zur Optimierung von Energieeffizienz und sommerlicher Raumtemperatur}, series = {Stahlbau}, volume = {Vol. 80}, journal = {Stahlbau}, number = {Iss. 9}, publisher = {Wiley}, address = {Weinheim}, issn = {1437-1049 (E-Journal); 0038-9145 (Print)}, pages = {666 -- 672}, year = {2011}, language = {de} } @inproceedings{DoeringFeldmannKuhnhenneetal.2008, author = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus and Hellberg, Jan}, title = {Implementing a thermal activation system into a light-weight steel deck element}, series = {Eurosteel 2008 : 5th European Conference on Steel and Composite Structures ; research, practice, new materials ; 3rd to 5th September 2008, Graz, Austria / ed. by Robert Ofner ...}, booktitle = {Eurosteel 2008 : 5th European Conference on Steel and Composite Structures ; research, practice, new materials ; 3rd to 5th September 2008, Graz, Austria / ed. by Robert Ofner ...}, publisher = {ECCS, European Convention for Construction Steelwork}, address = {Brussels}, organization = {Eurosteel <5, 2008, Graz>}, isbn = {92-0147-000-90}, pages = {941 -- 946}, year = {2008}, language = {en} } @article{DoeringFeldmannKuhnhenne2009, author = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus}, title = {Der Beitrag von Profilblechdecken zur passiven K{\"u}hlung}, series = {Bauphysik}, volume = {Vol. 31}, journal = {Bauphysik}, number = {Iss. 2}, publisher = {Wiley}, address = {Weinheim}, isbn = {1437-0980 (E-Journal); 0171-5445 (Print)}, pages = {65 -- 71}, year = {2009}, language = {de} } @inproceedings{DoeringFeldmannKuhnhenne2007, author = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus}, title = {An innovative thermally activated light-weight steel deck system - numerical investigations and practical tests}, series = {Clima 2007 WellBeing Indoors: 9th Rehva World Congress, 10-14 June 2007, Helsinki, Finland : proceedings}, booktitle = {Clima 2007 WellBeing Indoors: 9th Rehva World Congress, 10-14 June 2007, Helsinki, Finland : proceedings}, address = {Helsinki}, isbn = {978-952-99898-2-9}, pages = {1 -- 8}, year = {2007}, language = {en} } @misc{DoeringFeldmannKuhnhenne2013, author = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus}, title = {Schallschutz-Wandaufbau f{\"u}r ein Bauwerk oder ein Bauteil in Metallleichtbauweise, das mit Solarzellen best{\"u}ckt ist : Offenlegungsschrift}, publisher = {Deutsches Patent- und Markenamt}, address = {M{\"u}nchen}, pages = {14 S. : graph. Darst.}, year = {2013}, language = {de} } @phdthesis{Doering2008, author = {D{\"o}ring, Bernd}, title = {Einfluss von Deckensystemen auf Raumtemperatur und Energieeffizienz im Stahlgeschossbau. (Schriftenreihe Stahlbau. Bd. 64)}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8322-7516-7}, pages = {154 S.}, year = {2008}, language = {de} } @techreport{Doering1997, author = {D{\"o}ring, Bernd}, title = {Nutzung erneuerbarer Energien in Landesbauten : Dokumentation realisierter und geplanter Anlagen}, publisher = {Landesinstitut f{\"u}r Bauwesen des Landes Nordrhein-Westfalen}, address = {Aachen}, isbn = {3-930860-51-1}, pages = {66 S.}, year = {1997}, language = {de} } @inproceedings{DoerenWernicke1983, author = {D{\"o}ren, Horst-Peter and Wernicke, K.}, title = {Auftragen von verschleißfesten stranggegossenen Hartlegierungen auf Kobaltbasis durch das WIG- und Gasschweißen}, series = {Schweißen und Schneiden '83 = Welding and Cutting '83. Vortr{\"a}ge der Großen Schweißtechnischen Tagung in Aachen vom 28. bis 30. September 1983. Veranst.: Deutscher Verband f{\"u}r Schweißtechnik (DVS). DVS-Berichte. 83}, booktitle = {Schweißen und Schneiden '83 = Welding and Cutting '83. Vortr{\"a}ge der Großen Schweißtechnischen Tagung in Aachen vom 28. bis 30. September 1983. Veranst.: Deutscher Verband f{\"u}r Schweißtechnik (DVS). DVS-Berichte. 83}, publisher = {Dt. Verl. f{\"u}r Schweißtechnik}, address = {D{\"u}sseldorf}, issn = {3-87155-388-3}, pages = {109 -- 113}, year = {1983}, language = {de} }