@article{KlockeRichertSube2018,
  author    = {Klocke, Martina and Richert, Vera and Sube, Maike},
  title     = {Vier Jahre „Guter Studienstart im Ingenieurbereich": Entwicklung und Perspektiven des „Nullten Semesters" in Aachen},
  series = {Zeitschrift f{\"u}r Beratung und Studium},
  volume    = {13},
  journal   = {Zeitschrift f{\"u}r Beratung und Studium},
  number    = {1},
  publisher = {Universit{\"a}tsverlag Webler},
  address   = {Bielefeld},
  issn      = {1860-3068},
  pages     = {17 -- 22},
  year      = {2018},
  abstract  = {Bereits 2015 wurde in der Zeitschrift „Qualit{\"a}t in der Wissenschaft" (QiW) {\"u}ber das Kooperationsprojekt „Guter Studienstart im Ingenieurbereich", das Orientierungssemester von RWTH und FH Aachen, berichtet. In diesem Artikel legen wir den Schwerpunkt auf die Entwicklung des Projekts in den Jahren 2015 bis 2018 und geben eine R{\"u}ckschau sowie einen Ausblick auf die Entwicklungsperspektiven nach dem offiziellen Projektende.},
  language  = {de}
}
@article{BabilonWilbringTappertetal.2018,
  author    = {Babilon, Katharina and Wilbring, Daniela and Tappert, Tim and Pfaff, Raphael and Enning, Manfred},
  title     = {Schienenfahrzeugtechnik hands on - FH Aachen IMechE Railway Challenge},
  series = {Ingenieurspiegel},
  journal   = {Ingenieurspiegel},
  number    = {2},
  publisher = {Public Verlag},
  address   = {Bingen},
  issn      = {1868-5919},
  pages     = {20 -- 22},
  year      = {2018},
  language  = {de}
}
@article{FranzenPindersPfaffetal.2018,
  author    = {Franzen, Julius and Pinders, Erik and Pfaff, Raphael and Enning, Manfred},
  title     = {RailCrowd's virtual fleets: Make most of your asset data},
  series = {Deine Bahn},
  journal   = {Deine Bahn},
  number    = {9},
  publisher = {Bahn-Fachverlag},
  address   = {Berlin},
  issn      = {0948-7263},
  pages     = {11 -- 13},
  year      = {2018},
  abstract  = {For smaller railway operators or those with a diverse fleet, it can be difficult to collect sufficient data to improve maintenance programs. At the same time, new rules such as entity in charge of maintenance - ECM - regulations impose an additional workload by requiring a dedicated maintenance management system and specific reports. The RailCrowd platform sets out to facilitate compliance with ECM and similar regulations while at the same time pooling anonymised fleet data across operators to form virtual fleets, providing greater data insights.},
  language  = {en}
}
@article{SchmidtEnningPfaff2018,
  author    = {Schmidt, Bernd and Enning, Manfred and Pfaff, Raphael},
  title     = {G{\"u}terwagen 4.0 - Der G{\"u}terwagen f{\"u}r das Internet der Dinge Teil 3: Einf{\"u}hrungsszenarien f{\"u}r aktive, kommunikative G{\"u}terwagen},
  series = {ETR - Eisenbahntechnische Rundschau},
  volume    = {67},
  journal   = {ETR - Eisenbahntechnische Rundschau},
  number    = {5},
  publisher = {DVV Media Group},
  address   = {Hamburg},
  issn      = {0013-2845},
  pages     = {60 -- 64},
  year      = {2018},
  abstract  = {Wenn durch innovative, automatisierte G{\"u}terwagen betriebswirtschaftliche Vorteile nutzbar gemacht werden sollen, muss die Migration auf das neue System in sinnvollen Teilschritten unter Ber{\"u}cksichtigung der organisationellen und betrieblichen Vereinbarkeit vorgenommen werden. Eine stufenweise Migration mit Nachr{\"u}stbarkeit und Kompatibilit{\"a}t kann die optimale Ausstattungsvariante f{\"u}r die unterschiedlichen Betriebsszenarien sowie eine Steigerung der Wirtschaftlichkeit des Gesamtsystems bieten.},
  language  = {de}
}
@article{Thomas2018,
  author    = {Thomas, Axel},
  title     = {Technologiezentren in der Aachener Region - Retrospektiven und Perspektiven},
  series = {VM Verwaltung und Management},
  volume    = {24},
  journal   = {VM Verwaltung und Management},
  number    = {3},
  publisher = {Nomos},
  address   = {Baden-Baden},
  issn      = {0947-9856},
  doi       = {10.5771/0947-9856-2018-3-147},
  pages     = {147 -- 156},
  year      = {2018},
  language  = {de}
}
@article{Thomas2018,
  author    = {Thomas, Axel},
  title     = {Zielerreichungen der Technologie- und Gr{\"u}nderzentren aus Sicht der kommunalen Finanzwirtschaft - dargestellt am Beispiel der Aachener Region},
  series = {Der Gemeindehaushalt},
  volume    = {119},
  journal   = {Der Gemeindehaushalt},
  number    = {7},
  publisher = {Kohlhammer},
  address   = {Stuttgart},
  issn      = {0340-3645},
  pages     = {149 -- 155},
  year      = {2018},
  language  = {de}
}
@article{WilbringEnningPfaffetal.2020,
  author    = {Wilbring, Daniela and Enning, Manfred and Pfaff, Raphael and Schmidt, Bernd},
  title     = {Neue Perspektiven f{\"u}r die Bahn in der Produktions- und Distributionslogistik durch Prozessautomation},
  series = {ETR - Eisenbahntechnische Rundschau},
  volume    = {69},
  journal   = {ETR - Eisenbahntechnische Rundschau},
  number    = {3},
  issn      = {0013-2845},
  pages     = {15 -- 19},
  year      = {2020},
  language  = {de}
}
@article{CosmaKesslerGebhardtetal.2020,
  author    = {Cosma, Cosmin and Kessler, Julia and Gebhardt, Andreas and Campbell, Ian and Balc, Nicolae},
  title     = {Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed},
  series = {Materials},
  volume    = {13},
  journal   = {Materials},
  number    = {4},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {1996-1944},
  doi       = {10.3390/ma13040905},
  pages     = {1 -- 18},
  year      = {2020},
  abstract  = {To manufacture custom medical parts or scaffolds with reduced defects and high mechanical characteristics, new research on optimizing the selective laser melting (SLM) parameters are needed. In this work, a biocompatible powder, 316L stainless steel, is characterized to understand the particle size, distribution, shape and flowability. Examination revealed that the 316L particles are smooth, nearly spherical, their mean diameter is 39.09 μm and just 10\% of them hold a diameter less than 21.18 μm. SLM parameters under consideration include laser power up to 200 W, 250-1500 mm/s scanning speed, 80 μm hatch spacing, 35 μm layer thickness and a preheated platform. The effect of these on processability is evaluated. More than 100 samples are SLM-manufactured with different process parameters. The tensile results show that is possible to raise the ultimate tensile strength up to 840 MPa, adapting the SLM parameters for a stable processability, avoiding the technological defects caused by residual stress. Correlating with other recent studies on SLM technology, the tensile strength is 20\% improved. To validate the SLM parameters and conditions established, complex bioengineering applications such as dental bridges and macro-porous grafts are SLM-processed, demonstrating the potential to manufacture medical products with increased mechanical resistance made of 316L.},
  language  = {en}
}
@article{KosterScheidweilerTieves2016,
  author    = {Koster, Arie and Scheidweiler, Robert and Tieves, Martin},
  title     = {A flow based pruning scheme for enumerative equitable coloring algorithms},
  series = {A flow based pruning scheme for enumerative equitable coloring algorithms},
  journal   = {A flow based pruning scheme for enumerative equitable coloring algorithms},
  doi       = {10.48550/arXiv.1607.08754},
  pages     = {1 -- 30},
  year      = {2016},
  abstract  = {An equitable graph coloring is a proper vertex coloring of a graph G where the sizes of the color classes differ by at most one. The equitable chromatic number is the smallest number k such that G admits such equitable k-coloring. We focus on enumerative algorithms for the computation of the equitable coloring number and propose a general scheme to derive pruning rules for them: We show how the extendability of a partial coloring into an equitable coloring can be modeled via network flows. Thus, we obtain pruning rules which can be checked via flow algorithms. Computational experiments show that the search tree of enumerative algorithms can be significantly reduced in size by these rules and, in most instances, such naive approach even yields a faster algorithm. Moreover, the stability, i.e., the number of solved instances within a given time limit, is greatly improved. Since the execution of flow algorithms at each node of a search tree is time consuming, we derive arithmetic pruning rules (generalized Hall-conditions) from the network model. Adding these rules to an enumerative algorithm yields an even larger runtime improvement.},
  language  = {en}
}
@article{BeckenbachScheidweiler2016,
  author    = {Beckenbach, Isabel and Scheidweiler, Robert},
  title     = {Perfect ƒ-Matchings and ƒ-Factors in Hypergraphs - A Combinatorial Approach},
  series = {Discrete Mathematics},
  volume    = {240},
  journal   = {Discrete Mathematics},
  number    = {10},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {2192-7782},
  doi       = {10.1016/j.disc.2017.05.005},
  pages     = {2499 -- 2506},
  year      = {2016},
  abstract  = {We prove characterizations of the existence of perfect ƒ-matchings in uniform mengerian and perfect hypergraphs. Moreover, we investigate the ƒ-factor problem in balanced hypergraphs. For uniform balanced hypergraphs we prove two existence theorems with purely combinatorial arguments, whereas for non-uniform balanced hypergraphs we show that the ƒ-factor problem is NP-hard.},
  language  = {en}
}