@article{20942,
  abstract     = {{Interface modification based on ultra-thin mercapto-propyl(trimethoxy) silane (MPTMS) films is shown to promote joining of copper and aluminum by plastic deformation followed by a heat treatment. The surface morphology and the surface chemistry of the metal substrates were analyzed by means of FE-SEM, XPS, and FT-IRRAS. The spectroscopic data show that the MPTMS film is crosslinked via Si-O-Si bonds and that stable Cu-S and Si-O-Al interfacial bonds are formed. The shear-force tests of the joints led to force displacement curves that are characteristic for a covalently bonded interface. Complementary cross sectional SEM and EDS analysis of the joint proved that a defect-free interface was formed without any measureable interdiffusion of metals across the interface or cracking of an oxide films.}},
  author       = {{Hoppe, Christian and Ebbert, Christoph and Voigt, Markus and Schmidt, Hans Christian and Rodman, Dmytro and Homberg, Werner and Maier, Hans Juergen and Grundmeier, Guido}},
  issn         = {{1527-2648}},
  journal      = {{ADVANCED ENGINEERING MATERIALS}},
  number       = {{6}},
  pages        = {{1066--1074}},
  title        = {{{Molecular Engineering of Aluminum-Copper Interfaces for Joining by Plastic Deformation}}},
  doi          = {{10.1002/adem.201500501}},
  volume       = {{18}},
  year         = {{2016}},
}

@inproceedings{17320,
  author       = {{Budde, Jannica and Oevel, Gudrun}},
  booktitle    = {{INFORMATIK 2016}},
  editor       = {{Mayr, Heinrich C. and Pinzger, Martin}},
  pages        = {{947--959}},
  publisher    = {{Gesellschaft für Informatik}},
  title        = {{{Innovationsmanagement an Hochschulen: Maßnahmen zur Unterstützung der Digitalisierung von Studium und Lehre}}},
  year         = {{2016}},
}

@inbook{17323,
  author       = {{Oevel, Gudrun}},
  booktitle    = {{"Ei, dem alten Herrn zoll' ich Achtung gern'". Festschrift für Joachim Veit zum 60. Geburtstag}},
  editor       = {{Richts, Kristina and Stadler, Peter}},
  pages        = {{509--522}},
  publisher    = {{Allitera}},
  title        = {{{Der Ton macht die Musik. Digitalisierung von Forschungsprozessen nicht nur in der Musikwissenschaft}}},
  year         = {{2016}},
}

@inbook{17327,
  author       = {{Oevel, Gudrun}},
  booktitle    = {{Kooperation von Rechenzentren. Festkolloquium für Gerhard Schneider zum 60. Geburtstag}},
  editor       = {{von Suchodoletz, Dirk and Schulz, Janne Chr. and Leendertse, Jan and Hotzel, Hartmut and Wimmer, Martin}},
  pages        = {{365--376}},
  publisher    = {{De Gruyter}},
  title        = {{{G´schichten aus dem Rechnerwald: Sieben auf einen Streich}}},
  doi          = {{10.1515/9783110459753-031}},
  year         = {{2016}},
}

@inproceedings{19,
  abstract     = {{Version Control Systems (VCS) are a valuable tool for software development
and document management. Both client/server and distributed (Peer-to-Peer)
models exist, with the latter (e.g., Git and Mercurial) becoming
increasingly popular. Their distributed nature introduces complications,
especially concerning security: it is hard to control the dissemination of
contents stored in distributed VCS as they rely on replication of complete
repositories to any involved user.

We overcome this issue by designing and implementing a concept for
cryptography-enforced access control which is transparent to the user. Use
of field-tested schemes (end-to-end encryption, digital signatures) allows
for strong security, while adoption of convergent encryption and
content-defined chunking retains storage efficiency. The concept is
seamlessly integrated into Mercurial---respecting its distributed storage
concept---to ensure practical usability and compatibility to existing
deployments.}},
  author       = {{Lass, Michael and Leibenger, Dominik and Sorge, Christoph}},
  booktitle    = {{Proc. 41st Conference on Local Computer Networks (LCN)}},
  isbn         = {{978-1-5090-2054-6}},
  keywords     = {{access control, distributed version control systems, mercurial, peer-to-peer, convergent encryption, confidentiality, authenticity}},
  publisher    = {{IEEE}},
  title        = {{{Confidentiality and Authenticity for Distributed Version Control Systems - A Mercurial Extension}}},
  doi          = {{10.1109/lcn.2016.11}},
  year         = {{2016}},
}

@techreport{23737,
  author       = {{Lammers, Stefan and Quattrone, Francesco and Mrozek, Rafael}},
  publisher    = {{Forschungsvereinigung Antriebstechnik e.V.}},
  title        = {{{Machbarkeitsstudie 3D Druck Elektromotoren}}},
  volume       = {{Nr. 1189}},
  year         = {{2016}},
}

@techreport{20822,
  abstract     = {{Several examples of mechatronic systems can be found nowadays in modern cars, production systems, and medical technology. Day by day, the number of innovative functionalities in such mechatronic systems is increasing. These functionalities are realized with complex software. Such software exhibits hard real-time, safety requirements. The adherence to these requirements must be thoroughly analyzed and verified. Moreover, to obtain a significant increment in the reliability, performance, and efficiency of such software, it needs to maintain the self-adaptation of its properties. In order to develop such systems with a high quality and within a short time, we need a systematic and consistent design method. For this purpose, the software engineering group at the University of Paderborn and the Fraunhofer IEM in Paderborn propose the MechatronicUML method. This method provides a comprehensive model-driven process support, that starts from requirements and reaches the executable software after passing through several design and analysis steps. This process improves the comprehension during development and makes complex systems manageable. MechatronicUML emphasizes mainly on: (1) modeling and (formal) verification of reconfigurable software architectures, (2) the coordination among system components in such architectures, and (3) the integration of discrete software events with the continuous behavior of control devices.}},
  author       = {{Dziwok, Stefan and Pohlmann, Uwe and Piskachev, Goran and Schubert, David and Thiele, Sebastian and Gerking, Christopher}},
  title        = {{{The MechatronicUML Design Method: Process and Language for Platform-Independent Modeling}}},
  year         = {{2016}},
}

@techreport{20823,
  abstract     = {{In this technical report, we present the MechatronicUML requirements engineering method. The method encompasses a process and a scenario-based modeling language for the documentation and analysis of requirements on the message-based interaction behavior of software-intensive systems. The modeling language uses a scenario notation based on Modal Sequence Diagrams (MSDs), which borrows concepts of UML Interactions as well as of Live Sequence Charts. Furthermore, we introduce the so-called Emergency Braking & Evasion System (EBEAS) as a running example, which is based on current and upcoming real-world driver assistance systems. }},
  author       = {{Holtmann, Jörg and Fockel, Markus and Koch, Thorsten and Schmelter, David and Brenner, Christian and Bernijazov, Ruslan and Sander, Marcel}},
  title        = {{{The MechatronicUML Requirements Engineering Method: Process and Language}}},
  doi          = {{10.13140/RG.2.2.33223.29606}},
  year         = {{2016}},
}

@inproceedings{20824,
  abstract     = {{Für die Ausführung der Software müssen die Softwarekomponenten auf ECUs verteilt werden. Dabei unterliegt die Verteilung sicherheitskritischen Constraints. Das Suchen der optimalen und gültigen Verteilung ist sehr komplex. Die Lösung kann effizient durch Verfahren des Operations Research ermittelt werden. Jedoch ist die manuelle Kodierung sehr aufwändig. Dieser Beitrag stellt eine modellgetriebene Methode und Werkzeugunterstützung vor, welche die Beschreibung von Constraints und Optimierungen vereinfacht sowie die formale Kodierung und Lösungssuche automatisiert. Dies erlaubt die effiziente Nutzung der Macht von formalen Modellen ohne Kenntnis der formalen mathematischen Verfahren. Die Vorteile der Methode werden anhand eines Beispiels aus der Automobilindustrie beschrieben. }},
  author       = {{Pohlmann, Uwe and Holtmann, Jörg and Meyer, Matthias}},
  booktitle    = {{Tagungsband Embedded Software Engineering Kongress 2016}},
  pages        = {{587--592}},
  title        = {{{Das Erwachen der Macht – Automatische Softwareverteilung}}},
  year         = {{2016}},
}

@inproceedings{20826,
  abstract     = {{The development of today’s technical products (e.g., in automation) is characterized by high customer expectations regarding the product individualization, which causes a wide range of product variants. Original equipment manufacturers (OEMs) can apply classical approaches from product line engineering, like feature modeling, to cope with the variability and the induced development complexity. Our tool support for feature models integrates a variety of feature model extensions like feature attributes and properties, logical constraints between features and feature properties, and the distinction between features and feature realizations. Furthermore, technical products have geometrical dimensions. The OEM specifies Computer Aided Design (CAD) models to consider these geometric dimensions and to virtually layout particular product variants. Geometric assembly constraints specify how parts of the product can be arranged in a CAD model. However, a potential product customer cannot configure an individual product variant and virtually layout this variant in the same software tool since the respective information stems from different sources. In order to cope with this problem, we present in this paper an extension of our tool support for feature models to specify geometric assembly constraints. Based on the proposed extension, we outline our research roadmap to consider these constraints in an online shop of an e-commerce system, in which a potential customer shall be able to configure a product variant and to virtually layout it according to the assembly constraints.
}},
  author       = {{Koch, Thorsten and Holtmann, Jörg and Schubert, David and Lindemann, Timo}},
  booktitle    = {{3rd International Conference on System-integrated Intelligence: New Challenges for Product and Production Engineering (SysInt 2016)}},
  editor       = {{Trächtler, Ansgar and Denkena, Berend and Thoben, Klaus-Dieter}},
  pages        = {{447--454}},
  publisher    = {{Elsevier}},
  title        = {{{Towards Feature-based Product Line Engineering of Technical Systems}}},
  doi          = {{10.1016/j.protcy.2016.08.057}},
  year         = {{2016}},
}

@inproceedings{20827,
  abstract     = {{Cyber-physical systems like self-driving cars are highly complex and safety-critical. This results in a great number of safety requirements that have different levels of criticality. In automotive, the criticality is categorized in Automotive Safety Integrity Levels (ASIL). As a high ASIL causes high development effort, the goal is to develop most subsystems with lower ASIL requirements. To achieve this ASIL tailoring, subsystems need to be separated or redundantly implemented. These safety measures are usually integrated late in the development process and thus cause costly development iterations. In this paper, we present a systematic, tool-supported ASIL tailoring process for the requirements analysis phase. It is applied on formal safety requirements and automatically generated fault trees for a functional view of the system. The process supports early planning of safety efforts for mixed-criticality systems and avoids costly late development iterations.}},
  author       = {{Fockel, Markus}},
  booktitle    = {{5th International Workshop on Next Generation of System Assurance Approaches for Safety-Critical Systems (SASSUR)}},
  pages        = {{298–310}},
  publisher    = {{Springer International Publishing Switzerland}},
  title        = {{{ASIL Tailoring on Functional Safety Requirements}}},
  volume       = {{9923}},
  year         = {{2016}},
}

@article{20828,
  abstract     = {{In verschiedenen Unternehmen wird mit Anforderungen unterschiedlich umgegangen. Je nach Größe, Branche und Unternehmenskultur ist das Thema Requirements Engineering (RE) mal weniger, mal mehr etabliert. In einigen Unternehmen wird es als lästige Zusatzaufgabe betrachtet, während andere Unternehmen ganze Abteilungen mit RE als Kernkompetenz betreiben. RE wird allerdings in jedem Projekt - bewusst oder unbewusst - durchgeführt! RE ist die Basis für den weiteren Entwicklungsprozess, die Validierung/Verifikation und die Plan- und Messbarkeit des Projekts. Darüber hinaus können Fehler, die auf Anforderungsebene gefunden werden, weniger aufwendig und somit günstiger behoben werden als in späteren Entwicklungsphasen. Am Fraunhofer IEM beraten wir Unternehmen und erforschen neue Methoden bezüglich der Entwicklung von intelligenten technischen Systemen. In diesem Artikel berichten wir über unsere Erfahrungen aus Projekten, in denen wir Unternehmen aus verschiedenen Branchen und mit unterschiedlichem RE-Reifegrad zwecks Leistungssteigerung des RE begleitet haben. Auf Basis dieser Projekterfahrungen zeigen wir Wege auf, wie der Stand des RE mittels eines Reifegradmodells im eigenen Unternehmen verbessert werden kann.}},
  author       = {{Holtmann, Jörg and Fockel, Markus and Koch, Thorsten and Schmelter, David}},
  journal      = {{OBJEKTspektrum}},
  number       = {{RE/2016}},
  title        = {{{Requirements Engineering - Zusatzaufgabe oder Kernkompetenz?}}},
  year         = {{2016}},
}

@article{20829,
  abstract     = {{The development of software-intensive technical systems involves several engineering disciplines like mechanical, electrical, control, and particularly software engineering. Model-based Systems Engineering (MBSE) coordinates these disciplines throughout the development by means of discipline-spanning processes and a system model. Such a system model provides a common understanding of the system under development and serves as a starting point for the discipline-specific development. An integral part of MBSE is the requirements engineering on the system level. However, these requirements need to be refined for the discipline-specific development to start, e.g., into specific requirements for the embedded software. Since existing MBSE approaches lack support for this refinement step, we conceived in previous work a systematic transition from MBSE to model-based software requirements engineering. We automated the steps of the transition where possible, in order to avoid error-prone and time-consuming manual tasks. In this paper, we extend this approach with support for subsequent process iterations and provide an algorithm for the automated steps. We illustrate the approach and perform a case study with an example of an automotive embedded system.}},
  author       = {{Holtmann, Jörg and Bernijazov, Ruslan and Meyer, Matthias and Schmelter, David and Tschirner, Christian}},
  journal      = {{Journal of Software Evolution and Process}},
  title        = {{{Integrated and iterative systems engineering and software requirements engineering for technical systems}}},
  doi          = {{10.1002/smr.1780}},
  year         = {{2016}},
}

@inproceedings{20830,
  author       = {{Schubert, David and Heinzemann, Christian and Gerking, Christopher}},
  booktitle    = {{Proceedings of the 19th international ACM Sigsoft symposium on component-based software engineering}},
  publisher    = {{ACM}},
  title        = {{{Towards Safe Execution of Reconfigurations in Cyber-Physical Systems}}},
  year         = {{2016}},
}

@inproceedings{22107,
  abstract     = {{Die Zielsetzung beim Radfahren ist das Leistungspotential des Fahrers vollständig auszunutzen. Dabei muss das Fahrrad optimal an die Körpermaße des Fahrers angepasst werden. Besonders im Radrennsport ist neben dem hohen Leichtbaupotential eine aerodynamische Sitzhaltung von enormer Bedeutung. Unter Berücksichtigung dieser Anforderungen sind individuelle Bauteile und Strukturen zu entwickeln, da nicht in allen Fällen die Abmessungen der Standardbauteile eine optimale Anpassung zulassen. Im Hinblick auf einen groß gewachsenen Fahrer ist ein verlängerter Vorbau – Gabel-Lenker-Verbindung – für eine aerodynamische Sitzhaltung und somit einen geringen Luftwiderstand unumgänglich. Für die Herstellung solcher maßgeschneiderten Strukturen ist die additive Fertigung aufgrund der hohen gestalterischen Freiheiten und des hohen Individualisierungsgrades besonders geeignet. Im Rahmen dieses Beitrags wird ein Fahrradvorbau für einen überdurchschnittlich langen Fahrer festigkeits- und leichtbauoptimiert konstruiert und nach der Norm DIN EN ISO4210 unter Berücksichtigung der verfahrensspezifischen Randbedingungen beziehungsweise Gestaltungsrichtlinien des Laserstrahlschmelzens ausgelegt. Ausgangsbasis für die Geometriegestaltung sind die Grundlagen der Festigkeitsberechnung. Ein CAD-Modell wird erstellt und aufgrund der komplexen Belastungssituation mit Hilfe der Finite-Elemente-Methode numerisch untersucht sowie optimiert. Nach mehreren Iterationsschritten wird für den Werkstoff TiAl6V4 ein gewichtsreduzierter überlanger Fahrradvorbau von 140mm entwickelt und generativ hergestellt. Der anschließende Vergleich zu einem handelsüblichen Vorbau zeigt eine Gewichtsreduktion von ca. 30%.}},
  author       = {{Brüggemann, J.P. and Reschetnik, W. and Richard, H.A. and Kullmer, G. and Schramm, B.}},
  booktitle    = {{Rapid Tech - International Trade Show & Conference for Additive Manufacturing}},
  isbn         = {{978-3-446-45060-8}},
  pages        = {{290--300}},
  title        = {{{Festigkeits- und leichtbauoptimierte Konstruktion und Auslegung eines additiv gefertigten Fahrradvorbaus}}},
  doi          = {{10.3139/9783446450608.025}},
  year         = {{2016}},
}

@inproceedings{22109,
  author       = {{Reschetnik, W. and Grylls, R. and Bauer, B. and Richard, H.A. and Kullmer, G.}},
  title        = {{{Fatigue Life Manipulation of SLM Parts}}},
  year         = {{2016}},
}

@inproceedings{22128,
  author       = {{Brüggemann, J.P. and Riemer, A. and Reschetnik, W. and Aydinöz, M.E. and Kullmer, G. and Richard, H.A. and Schaper, M.}},
  booktitle    = {{DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}},
  pages        = {{101--112}},
  title        = {{{Optimierung von Fahrradtretkurbeln mittels additiver Fertigung}}},
  year         = {{2016}},
}

@inproceedings{22130,
  author       = {{Reschetnik, W. and Brüggemann, J.P. and Aydinöz, M.E. and Kullmer, G. and Richard, H.A. and Schaper, M.}},
  booktitle    = {{DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}},
  pages        = {{131--140}},
  title        = {{{Lebensdauerbeeinflussung durch Additive Fertigung}}},
  year         = {{2016}},
}

@inproceedings{22132,
  author       = {{Riemer, A. and Leuders, L. and Kullmer, G. and Richard, H.A.}},
  booktitle    = {{DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}},
  pages        = {{161--174}},
  title        = {{{Materialkennwerte lasergeschmolzener Werkstoffe}}},
  year         = {{2016}},
}

@inproceedings{22146,
  abstract     = {{manufacturing in electrical engineering applications.}},
  author       = {{Reschetnik, W. and Brüggemann, J.P. and Aydinöz, M.E. and Grydin, O. and Hoyer, K.P. and Kullmer, G. and Richard, H.A.}},
  booktitle    = {{Procedia Structural Integrity}},
  pages        = {{3040--3048}},
  title        = {{{Fatigue crack growth behavior and mechanical properties of additively processed EN AW-7075 aluminium alloy}}},
  year         = {{2016}},
}