@inproceedings {INPROC-2015-62,
   author = {Eva Maria Grochowski and Eva Hoos and Stefan Waitzinger and Dieter Spath and Bernhard Mitschang},
   title = {{Web-based collaboration system for interdisciplinary and interorganizational development teams: case study}},
   booktitle = {Proceeding of the 23rd International Conference on Production Research},
   publisher = {-},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {1--11},
   type = {Conference Paper},
   month = {August},
   year = {2015},
   keywords = {Collaboration; Web-based Platform},
   language = {English},
   cr-category = {J.1 Administration Data Processing},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {The automotive industry faces three major challenges – shortage of fossil
      fuels, politics of global warming and rising competition. In order to remain
      competitive companies have to develop more efficient and alternative fuel
      vehicles. Out of these challenges new cooperation models become inevitable. The
      development of complex products like automobiles claims skills of various
      disciplines e.g. engineering, IT. Furthermore, these skills are spread all over
      various companies within the supply chain and beyond. Hence, supporting IT
      systems for collaborative, innovative work is absolutely essential.
      Interdisciplinary and interorganizational development has new demands on
      information systems. These demands are not well analyzed at the moment and
      therefore, existing collaboration platforms cannot address them. In order to
      determine these new requirements and show the gap to existing collaboration
      platform we performed a case study. In this case study, we analyze the research
      campus “Active Research Environment for the Next Generation of Automobiles”
      (ARENA2036). It is a is a new cooperation form, where diverse partners from the
      industry, research institutes and universities elaborate collaboratively future
      topics in the field of production and light weight construction under “one
      single roof”. We focus on the special needs of the interdisciplinary,
      interorganizational partners. The requirements were polled by a questionnaire.
      About 80 percent of the active research workers in ARENA2036 answered the
      questionnaire. By the answers we can identify the special needs and also role
      profiles of the collaborators. The resulting role profiles specify the personal
      requirements. These are used for an evaluation of existing information
      platforms. The deficits between the offered features and the demands of the
      partners, as well as new technologies supporting the individual needs of users
      are the foundation for the information system concept for ARENA2036. In our
      findings we present a role-based view on requirements for the development of an
      information system for collaboration and cooperation. Based on these
      requirements we then develop a concept for mobile apps with focus on a
      role-based design.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-62&engl=1}
}

@inproceedings {INPROC-2015-60,
   author = {Pascal Hirmer},
   title = {{Flexible Modeling and Execution of Data Integration Flows}},
   booktitle = {Proceedings of the 9th Advanced Summer School on Service Oriented Computing},
   editor = {Johanna Barzen and Rania Khalaf and Frank Leymann and Bernhard Mitschang},
   publisher = {IBM Research Report},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {153--154},
   type = {Conference Paper},
   month = {December},
   year = {2015},
   keywords = {Big Data; Data Integration; Data Flows; Pipes and Filters},
   language = {English},
   cr-category = {E.0 Data General,
                   E.1 Data Structures,
                   H.1 Models and Principles},
   ee = {http://domino.research.ibm.com/library/cyberdig.nsf/papers/656B934403848E8A85257F1D00695A63/$File/rc25564.pdf},
   contact = {Pascal.Hirmer@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {For my PhD, I am working towards an approach for data flow-based, ad-hoc data
      integration based on cloud computing technologies. I started my work roughly
      one year ago. In the following, I will present the research problem and
      introduce a plan how to cope with the introduced issues.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-60&engl=1}
}

@inproceedings {INPROC-2015-57,
   author = {Uwe Breitenb{\"u}cher and Pascal Hirmer and K{\'a}lm{\'a}n K{\'e}pes and Oliver Kopp and Frank Leymann and Matthias Wieland},
   title = {{A Situation-Aware Workflow Modelling Extension}},
   booktitle = {Proceedings of the 17th International Conference on Information Integration and Web-based Applications \& Services (iiWAS 2015)},
   publisher = {ACM},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {478--484},
   type = {Conference Paper},
   month = {December},
   year = {2015},
   keywords = {Situation-Aware Workflows; Workflow Modelling; Workflow Management; Situation-Awareness; Workflow Execution},
   language = {English},
   cr-category = {D.3.3 Programming Language Constructs and Features,
                   H.4.1 Office Automation},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {The automation of business processes is of vital importance for organizations
      to speed up their business and to lower costs. Due to emerging technologies in
      the field of Internet of Things, changing situations can be recognized
      automatically, which provides the basis for an automated adaptation of process
      executions in order to react to changing circumstances. Although approaches
      exist that enable creating self-adapting workflows, a systematic modelling
      approach that supports the specification of situational dependencies directly
      in workflow models is missing. In this paper, we tackle this issue by
      presenting a modelling extension called SitME that defines (i) an extensible
      Situation Event type, (ii) the concept of Situational Scopes, and (iii) a
      visual notation. As the introduced extension is language-independent, we apply
      the approach to BPEL to validate its practical feasibility.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-57&engl=1}
}

@inproceedings {INPROC-2015-55,
   author = {Uwe Breitenb{\"u}cher and Tobias Binz and Oliver Kopp and Frank Leymann and Johannes Wettinger},
   title = {{A Modelling Concept to Integrate Declarative and Imperative Cloud Application Provisioning Technologies}},
   booktitle = {Proceedings of the 5th International Conference on Cloud Computing and Services Science (CLOSER 2015)},
   publisher = {SciTePress},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {487--496},
   type = {Conference Paper},
   month = {May},
   year = {2015},
   keywords = {Cloud Application Provisioning; Automation; Declarative Modelling; Imperative Modelling},
   language = {English},
   cr-category = {K.6 Management of Computing and Information Systems},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {Efficient application provisioning is one of the most important issues in Cloud
      Computing today. For that purpose, various provisioning automation technologies
      have been developed that can be generally categorized into two different
      flavors: (i) declarative approaches are based on describing the desired goals
      whereas (ii) imperative approaches are used to describe explicit sequences of
      low-level tasks. Since modern Cloud-based business applications become more and
      more complex, employ a plethora of heterogeneous components and services that
      must be wired, and require complex configurations, the two kinds of
      technologies have to be integrated to model the provisioning of such
      applications. In this paper, we present a process modelling concept that
      enables the seamless integration of imperative and declarative provisioning
      models and their technologies while preserving the strengths of both flavors.
      We validate the technical feasibility of the approach by applying the concept
      to the workflow language BPEL and evaluate its features by several criteria.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-55&engl=1}
}

@inproceedings {INPROC-2015-52,
   author = {Ulrike Pado and Cornelia Kiefer},
   title = {{Short Answer Grading: When Sorting Helps and When it Doesn’t}},
   booktitle = {Proceedings of the 4th workshop on NLP for Computer Assisted Language Learning, NODALIDA 2015},
   editor = {Link{\"o}pings universitet Link{\"o}ping University Electronic Press},
   address = {Wilna},
   publisher = {LiU Electronic Press and ACL Anthology},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Link{\"o}ping Electronic Conference Proceedings},
   pages = {42--50},
   type = {Workshop Paper},
   month = {May},
   year = {2015},
   isbn = {978-91-7519-036-5},
   keywords = {short-answer grading; assisted grading; short-answer corpora},
   language = {English},
   cr-category = {J Computer Applications},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Automatic short-answer grading promises improved student feedback at reduced
      teacher effort both during and after in- struction. Automated grading is, how-
      ever, controversial in high-stakes testing and complex systems can be difficult
      to set up by non-experts, especially for fre- quently changing questions. We
      propose a versatile, domain-independent system that assists manual grading by
      pre-sorting an- swers according to their similarity to a ref- erence answer. We
      show near state-of- the-art performance on the task of auto- matically grading
      the answers from CREG (Meurers et al., 2011). To evaluate the grader assistance
      task, we present CSSAG (Computer Science Short Answers in Ger- man), a new
      corpus of German computer science questions answered by natives and
      highly-proficient non-natives. On this cor- pus, we demonstrate the positive
      influence of answer sorting on the slowest-graded, most complex-to-assess
      questions.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-52&engl=1}
}

@inproceedings {INPROC-2015-47,
   author = {Oliver Kopp and Michael Falkenthal and Niklas Hartmann and Frank Leymann and Holger Schwarz and Jessica Thomsen},
   title = {{Towards a Cloud-based Platform Architecture for a Decentralized Market Agent}},
   booktitle = {INFORMATIK 2015},
   editor = {Douglas Cunningham and Petra Hofstedt and Klaus Meer and Ingo Schmitt},
   publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Lecture Notes in Informatics (LNI)},
   volume = {P-246},
   pages = {69--80},
   type = {Workshop Paper},
   month = {September},
   year = {2015},
   isbn = {978-3-88579-640-4},
   issn = {1617-5468},
   language = {English},
   cr-category = {J.m Computer Applications Miscellaneous},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {Reorganization of power generation, thereby replacing conventional energy
      sources by innovative renewable energy sources, demands a change in
      distribution grid structure and operation. The foreseen Decentralized Marked
      Agent is a new role in the energy market sector accomplishing not only trading
      on energy and operating reserve markets but also regulating flexibilities at
      the distribution grid level, such as energy storage and decentralized energy
      generators, and thereby considering system services and securing system
      stability. This paper presents requirements on an IT system to support this new
      role.We design an architecture matching these requirements and show how Cloud
      computing technology can be used to implement the architecture. This enables
      data concerning the distribution grid being automatically gathered and
      processed by dedicated algorithms, aiming to optimize cost efficient operation
      and the development of the distribution grid.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-47&engl=1}
}

@inproceedings {INPROC-2015-46,
   author = {Jessica Thomsen and Niklas Hartmann and Florian Klumpp and Thomas Erge and Michael Falkenthal and Oliver Kopp and Frank Leymann and Sven Stando and Nino Turek and Christoph Schlenzig and Holger Schwarz},
   title = {{Darstellung des Konzeptes -- DMA Decentralised Market Agent -- zur Bew{\"a}ltigung zuk{\"u}nftiger Herausforderungen in Verteilnetzen}},
   booktitle = {INFORMATIK 2015},
   editor = {Douglas Cunningham and Petra Hofstedt and Klaus Meer and Ingo Schmitt},
   publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Lecture Notes in Informatics (LNI)},
   volume = {P-246},
   pages = {53--67},
   type = {Workshop Paper},
   month = {September},
   year = {2015},
   isbn = {978-3-88579-640-4},
   issn = {1617-5468},
   language = {German},
   cr-category = {J.m Computer Applications Miscellaneous},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {In der vorliegenden Ver{\"o}ffentlichung wird ein Konzept f{\"u}r einen neuen
      Marktakteur im Strommarkt vorgestellt, der im zuk{\"u}nftigen Smart Grid als
      Aggregator und Planer fungieren kann. Dieser Decentralised Market Agent – DMA –
      soll die Informationen aller vorhandenen Erzeugungs- und Speicheranlagen,
      Lasten und Netzinformationen auf Verteilnetzebene aggregieren sowie mit lokalen
      Akteuren und an den zentralen M{\"a}rkten agieren um einen kostenoptimalen Betrieb
      und Ausbau des Systems Verteilnetzes zu realisieren. Zur Handlungsf{\"a}higkeit
      dieser neuen Marktrolle bedarf es hochaufl{\"o}sender Messungen im Verteilnetz und
      einer „real-time“ Aufbereitung der Messdaten. Im vorliegenden Paper sollen das
      Konzept sowie die notwendigen Bausteine zur Erreichung der Handlungsf{\"a}higkeit
      des DMA vorgestellt sowie die zuk{\"u}nftig geplanten Untersuchungen erl{\"a}utert
      werden. Die detaillierte Entwicklung des Konzepts sowie weiterf{\"u}hrende Analysen
      sind Teil des Projektes NEMAR – Netzbewirtschaftung als neue Marktrolle,
      gef{\"o}rdert durch BMWi im Rahmen der Forschungsinitiative Zukunftsf{\"a}hige
      Stromnetze.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-46&engl=1}
}

@inproceedings {INPROC-2015-45,
   author = {Laura Kassner and Cornelia Kiefer},
   title = {{Taxonomy Transfer: Adapting a Knowledge Representing Resource to new Domains and Tasks}},
   booktitle = {Proceedings of the 16th European Conference on Knowledge Management},
   publisher = {acpi Online},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {399--407},
   type = {Conference Paper},
   month = {September},
   year = {2015},
   keywords = {taxonomy; ontology; ontology population; semantic resources; domain-specific language},
   language = {English},
   cr-category = {I.2.7 Natural Language Processing,
                   I.2.4 Knowledge Representation Formalisms and Methods,
                   J.7 Computers in Other Systems},
   contact = {Email an laura.kassner@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Today, data from different sources and different phases of the product life
      cycle are usually analyzed in isolation and with considerable time delay.
      Real-time integrated analytics is especially beneficial in a production
      context. We present an architecture fordata- and analytics-driven exception
      escalation in manufacturing and show the advantages of integrating unstructured
      data.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-45&engl=1}
}

@inproceedings {INPROC-2015-34,
   author = {Pascal Hirmer and Matthias Wieland and Holger Schwarz and Bernhard Mitschang and Uwe Breitenb{\"u}cher and Frank Leymann},
   title = {{SitRS - A Situation Recognition Service based on Modeling and Executing Situation Templates}},
   booktitle = {Proceedings of the 9th Symposium and Summer School On Service-Oriented Computing},
   editor = {Johanna Barzen and Rania Khalaf and Frank Leymann and Bernhard Mitschang},
   publisher = {IBM Research Report},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Technical Paper},
   volume = {RC25564},
   pages = {113--127},
   type = {Conference Paper},
   month = {December},
   year = {2015},
   keywords = {Situation Recognition, IoT, Context, Integration, Cloud Computing, OSLC},
   language = {English},
   cr-category = {J.6 Computer-Aided Engineering,
                   H.3.1 Content Analysis and Indexing},
   ee = {http://domino.research.ibm.com/library/cyberdig.nsf/papers/656B934403848E8A85257F1D00695A63},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Today, the Internet of Things has evolved due to an advanced connectivity of
      physical objects. Furthermore, Cloud Computing gains more and more interest for
      the provisioning of services. In this paper, we want to further improve the
      integration of these two areas by providing a cloud-based situation recognition
      service – SitRS. This service can be used to integrate real world objects – the
      things – into the internet by deriving their situational state based on
      sensors. This enables context-aware applications to detect events in a smart
      environment. SitRS is a basic service enabling a generic and easy
      implementation of Smart* applications such as SmartFactorys, SmartCities,
      SmartHomes. This paper introduces an approach containing a method and a system
      architecture for the realization of such a service. The core steps of the
      method are: (i) registration of the sensors, (ii) modeling of the situation,
      and (iii) execution of the situation recognition. Furthermore, a prototypical
      implementation of SitRS is presented and evaluated via runtime measurements.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-34&engl=1}
}

@inproceedings {INPROC-2015-33,
   author = {Pascal Hirmer and Peter Reimann and Matthias Wieland and Bernhard Mitschang},
   title = {{Extended Techniques for Flexible Modeling and Execution of Data Mashups}},
   booktitle = {Proceedings of the 4th International Conference on Data Management Technologies and Applications (DATA)},
   editor = {Markus Helfert and Andreas Holzinger and Orlando Belo and Chiara Francalanci},
   address = {Colmar},
   publisher = {SciTePress},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {111--122},
   type = {Conference Paper},
   month = {July},
   year = {2015},
   isbn = {978-989-758-103-8},
   keywords = {Data Mashups, Ad-hoc Integration, Patterns, Data Flow},
   language = {English},
   cr-category = {E.1 Data Structures,
                   E.5 Data Files},
   contact = {pascal.hirmer@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Today, a multitude of highly-connected applications and information systems
      hold, consume and produce huge amounts of heterogeneous data. The overall
      amount of data is even expected to dramatically increase in the future. In
      order to conduct, e.g., data analysis, visualizations or other value-adding
      scenarios, it is necessary to integrate specific, relevant parts of data into a
      common source. Due to oftentimes changing environments and dynamic requests,
      this integration has to support ad-hoc and flexible data processing
      capabilities. Furthermore, an iterative and explorative trial-and-error
      integration based on different data sources has to be possible. To cope with
      these requirements, several data mashup platforms have been developed in the
      past. However, existing solutions are mostly non-extensible, monolithic systems
      or applications with many limitations regarding the mentioned requirements. In
      this paper, we introduce an approach that copes with these issues (i) by the
      introduction of patterns to enable decoupling from implementation details, (ii)
      by a cloud-ready approach to enable availability and scalability, and (iii) by
      a high degree of flexibility and extensibility that enables the integration of
      heterogeneous data as well as dynamic (un-)tethering of data sources. We
      evaluate our approach using runtime measurements of our prototypical
      implementation.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-33&engl=1}
}

@inproceedings {INPROC-2015-25,
   author = {Frank Steimle and Matthias Wieland and Bernhard Mitschang and Sebastian Wagner and Frank Leymann},
   title = {{Design and Implementation Issues of a Secure Cloud-Based Health Data Management System}},
   booktitle = {Proceedings of the 9th Symposium and Summer School On Service-Oriented Computing},
   editor = {Johanna Barzen and Rania Khalaf and Frank Leymann and Bernhard Mitschang},
   publisher = {IBM Research Report},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Technical Paper},
   volume = {RC25564},
   pages = {68--82},
   type = {Conference Paper},
   month = {December},
   year = {2015},
   keywords = {eHealth; mHealth; cloud data; data analysis; security},
   language = {English},
   cr-category = {C.2.4 Distributed Systems,
                   H.2.8 Database Applications,
                   J.3 Life and Medical Sciences},
   ee = {http://domino.research.ibm.com/library/cyberdig.nsf/papers/656B934403848E8A85257F1D00695A63},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {eHealth gains more and more interest since a lot of end-user devices which
      support health data capturing are available. The captured data has to be
      managed and securely stored, in order to access it from different devices and
      to share it with other users such as physicians. The aim of the German-Greek
      research project ECHO is to support the treatment of patients, who suffer from
      Chronic Obstructive Pulmonary Disease (COPD), a chronic respiratory disease.
      Usually the patients need to be examined by their physicians on a regular basis
      due to their chronic condition. Since this is very time consuming and
      expensive, we develop an eHealth system which allows the physician to monitor
      patients conditions remotely, e.g., via smart phones. Therefore, a secure data
      processing and sharing eHealth platform is required. In this paper we introduce
      a health data model and a corresponding platform-architecture for the
      management and analysis of the data provided by the patients. Furthermore, we
      show how the security of the data is ensured and we explain how the platform
      can be hosted in a cloud-based environment using the OASIS standard TOSCA,
      which enables a self-contained and portable description and management of
      cloud-services.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-25&engl=1}
}

@inproceedings {INPROC-2015-24,
   author = {Matthias Wieland and Holger Schwarz and Uwe Breitenb{\"u}cher and Frank Leymann},
   title = {{Towards Situation-Aware Adaptive Workflows}},
   booktitle = {Proceedings of the 13th Annual IEEE Intl. Conference on Pervasive Computing and Communications Workshops: 11th Workshop on Context and Activity Modeling and Recognition},
   address = {St. Louis, Missouri, USA},
   publisher = {IEEE},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {32--37},
   type = {Workshop Paper},
   month = {March},
   year = {2015},
   keywords = {situation-awareness; adaptive-workflows; situation recognition; situation-aware workflow system},
   language = {English},
   cr-category = {H.4.1 Office Automation},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {Workflows are an established IT concept to achieve business goals in a reliable
      and robust manner. However, the dynamic nature of modern information systems,
      the upcoming Industry 4.0, and the Internet of Things increase the complexity
      of modeling robust workflows significantly as various kinds of situations, such
      as the failure of a production system, have to be considered explicitly.
      Consequently, modeling workflows in a situation-aware manner is a complex
      challenge that quickly results in big unmanageable workflow models. To overcome
      these issues, we present an approach that allows workflows to become
      situation-aware to automatically adapt their behavior according to the
      situation they are in. The approach is based on aggregated context information,
      which has been an important research topic in the last decade to capture
      information about an environment. We introduce a system that derives high-level
      situations from lower-level context and sensor information. A situation can be
      used by different situation-aware workflows to adapt to the current situation
      in their execution environment. SitOPT enables the detection of situations
      using different situation-recognition systems, exchange of information about
      detected situations, optimization of the situation recognition, and runtime
      adaption and optimization of situationaware workflows based on the recognized
      situations.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-24&engl=1}
}

@inproceedings {INPROC-2015-21,
   author = {Oliver Kopp and Tobias Binz and Uwe Breitenb{\"u}cher and Frank Leymann and Thomas Michelbach},
   title = {{A Domain-Specific Modeling Tool to Model Management Plans for Composite Applications}},
   booktitle = {Proceedings of the 7th Central European Workshop on Services and their Composition, ZEUS 2015},
   editor = {Thomas S. Heinze and Thomas M. Prinz},
   publisher = {CEUR Workshop Proceedings},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {CEUR Workshop Proceedings},
   volume = {1360},
   pages = {51--54},
   type = {Demonstration},
   month = {May},
   year = {2015},
   issn = {1613-0073},
   keywords = {TOSCA; BPMN Extension},
   language = {English},
   cr-category = {H.4.1 Office Automation},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2015-21/INPROC-2015-21.pdf,
      http://ceur-ws.org/Vol-1360/,
      www.zeus-workshop.eu/2015/},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {TOSCA is a standard to describe composite Cloud-applications and their
      management in a portable fashion. Thereby, BPMN4TOSCA is a proposed extension
      for BPMN to ease modeling of management plans. This demonstration presents a
      web-based modeling tool that supports an updated version of BPMN4TOSCA. The
      updated version supports direct wiring of data of tasks and events without the
      need of separate data objects.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-21&engl=1}
}

@inproceedings {INPROC-2015-20,
   author = {Sebastian Wagner and Oliver Kopp and Frank Leymann},
   title = {{Choreography-based Consolidation of Interacting Processes Having Activity-based Loops}},
   booktitle = {Proceedings of the 5th International Conference on Cloud Computing and Service Science (CLOSER 2015)},
   address = {Stuttgart},
   publisher = {SciTePress},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {284--296},
   type = {Conference Paper},
   month = {May},
   year = {2015},
   keywords = {BPEL; Choreography; Process Consolidation; Loops},
   language = {English},
   cr-category = {H.4.1 Office Automation},
   contact = {sebastian.wagner@iaas.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {Choreographies describe the interaction between two or more parties. The
      interaction behavior description might contain loops. In case two parties want
      to merge their behavior to gain competitive advantage, the contained loop
      constructs also have to be merged. This paper presents a language-independent
      discussion on loop-structure pairing in choreographies and possible merging
      strategies. Thereby, the focus is turned on loops grouping child activities to
      be iterated. We show the feasibility of the merging strategies by applying them
      to BPEL-based choreographies.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-20&engl=1}
}

@inproceedings {INPROC-2015-15,
   author = {Laura Kassner and Bernhard Mitschang},
   title = {{MaXCept – Decision Support in Exception Handling through Unstructured Data Integration in the Production Context. An Integral Part of the Smart Factory.}},
   booktitle = {Proceedings of the 48th Hawaii International Conference on System Sciences: HICSS 48, 2015},
   publisher = {IEEE Computer Society},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {1007--1016},
   type = {Conference Paper},
   month = {January},
   year = {2015},
   keywords = {smart manufacturing; industrial internet; unstructured data; data integration; exception escalation; expert search},
   language = {English},
   cr-category = {H.4.0 Information Systems Applications General,
                   J.1 Administration Data Processing,
                   J.7 Computers in Other Systems},
   contact = {laura.kassner@gsame.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Today, data from different sources and different phases of the product life
      cycle are usually analyzed in isolation and with considerable time delay.
      Real-time integrated analytics is especially beneficial in a production
      context. We present an architecture fordata- and analytics-driven exception
      escalation in manufacturing and show the advantages of integrating unstructured
      data.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-15&engl=1}
}

@inproceedings {INPROC-2015-11,
   author = {Christoph Stach},
   title = {{How to Deal with Third Party Apps in a Privacy System - The PMP Gatekeeper}},
   booktitle = {Proceedings of the 16th International Conference on Mobile Data Management},
   address = {Pittsburgh},
   publisher = {IEEE Computer Society Conference Publishing Services},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {1--6},
   type = {Conference Paper},
   month = {June},
   year = {2015},
   keywords = {Android; Privacy Systems; Legacy Apps},
   language = {English},
   cr-category = {K.4.1 Computers and Society Public Policy Issues,
                   D.4.6 Operating Systems Security and Protection},
   contact = {Senden Sie eine E-Mail an Christoph.Stach@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Nowadays, mobile devices collect a lot of private information. Therefore every
      vendor of a mobile platform has to provide a sufficient mechanism to secure
      this data. Android pursues a strategy to pass full control (and thus full
      responsibility) over any private data to the user. However, the Android
      Permission System is not sufficient for that purpose. Various third party
      approaches try to enhance the Android privacy policy model. Nevertheless, these
      approaches have to solve the problem of how to deal with Legacy Apps, i.e.,
      apps that do not collaborate with an enhanced privacy policy model.
      
      In this paper, we analyze various alternative privacy systems and discuss
      different approaches of how to deal with Legacy Apps. Based on our findings, we
      introduce the so-called PMP Gatekeeper, a best of breed approach dealing with
      Legacy Apps for the Privacy Management Platform (PMP). The PMP Gatekeeper
      classifies apps and deals with each class appropriately. So the user can adjust
      privacy settings for every kind of app. With our prototype we show, that the
      PMP in combination with the PMP Gatekeeper becomes a holistic privacy system.
      Although our prototype is for Android, our realization approach can be applied
      to other application platforms in order to offer a satisfying privacy system.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2015-11&engl=1}
}

@article {ART-2015-10,
   author = {Cornelia Kiefer and Ulrike Pado},
   title = {{Freitextaufgaben in Online-Tests – Bewertung und Bewertungsunterst{\"u}tzung}},
   journal = {HMD Praxis der Wirtschaftsinformatik},
   publisher = {Springer},
   volume = {52},
   number = {1},
   pages = {96--107},
   type = {Article in Journal},
   month = {January},
   year = {2015},
   isbn = {10.1365/s40702-014-0104-2},
   language = {German},
   cr-category = {J Computer Applications},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Der Einsatz von eLearning-Szenarien bietet viele innovative M{\"o}glichkeiten f{\"u}r
      die Wissensvermittlung. Spezielle eLearning-Tools dienen dazu, Lernressourcen,
      interaktive Elemente sowie Interaktions- und Kommunikationsm{\"o}glichkeiten
      bereitzustellen und zu kombinieren. So wird selbstgesteuertes, asynchrones
      Lernen m{\"o}glich, methodisch erschlie{\ss}en sich neue Wege und hohe Aufw{\"a}nde f{\"u}r
      gro{\ss}e Lerngruppen k{\"o}nnen sinken. In diesem Zusammenhang stellt sich die Frage,
      welchen Nutzen die computergest{\"u}tzte Umsetzung von Lernstands{\"u}berpr{\"u}fungen
      (Tests und Klausuren) f{\"u}r Dozenten und Lernende haben kann. Stark assoziiert
      mit Tests im eLearning-Bereich sind Multiple-Choice-Aufgaben. Als automatisch
      korrigierbare Fragen k{\"o}nnen sie im eLearning-Umfeld schnell und objektiv
      bewertet werden und liefern auch bei gro{\ss}en Teilnehmerzahlen schnell Feedback
      an Lernende und Dozenten. Gleichzeitig zweifeln viele Dozenten daran, dass
      diese Frageform die geforderten Kenntnisse und F{\"a}higkeiten wirklich
      wiederspiegeln und bef{\"u}rchten ungerechtfertigte Erfolge durch Raten.
      Freitextfragen umgehen diese Probleme und bieten den Mehrwert einer klareren
      Einsicht in die Denkweise des Pr{\"u}flings, doch ist ihre Korrektur zeitaufw{\"a}ndig
      und oft subjektiv. Wir geben Hinweise f{\"u}r die Praxis, die die Bewertung von
      Freitextaufgaben verbessern und beschleunigen helfen, und illustrieren unsere
      {\"U}berlegungen an einem realen Datensatz von Freitextfragen und Antworten, der im
      Verlauf einer Einf{\"u}hrungsveranstaltung in die Programmierung f{\"u}r Informatiker
      und Wirtschaftsinformatiker gewonnen wurde. Abschlie{\ss}end stellen wir unsere
      noch andauernde Arbeit an einem System zur halbautomatischen
      Bewerterunterst{\"u}tzung vor, das vom computerbasierten Umfeld im
      eLearning-Bereich profitiert und sowohl den Zeitaufwand f{\"u}r die manuelle
      Bewertung als auch die Replizierbarkeit der Bewertungen weiter optimieren soll.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2015-10&engl=1}
}

@article {ART-2015-05,
   author = {Christoph Stach and Bernhard Mitschang},
   title = {{Der Secure Data Container (SDC)}},
   journal = {Datenbank-Spektrum},
   address = {Berlin, Heidelberg},
   publisher = {Springer Verlag},
   volume = {15},
   number = {2},
   pages = {109--118},
   type = {Article in Journal},
   month = {July},
   year = {2015},
   issn = {1618-2162},
   doi = {10.1007/s13222-015-0189-y},
   keywords = {Datenschutz; Schutzziele; PMP-Erweiterung; Datencontainer; Evaluation},
   language = {German},
   cr-category = {K.4.1 Computers and Society Public Policy Issues,
                   D.4.6 Operating Systems Security and Protection},
   contact = {Senden Sie eine E-Mail an Christoph.Stach@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Mobile Endger{\"a}te wurden zu Marc Weisers Computer des 21. Jahrhunderts, da sie
      als dauerhaft verf{\"u}gbare Informationsquelle Einzug in unseren Alltag gehalten
      haben. Auf ihnen treffen private Daten (z.B. Fotos) auf Kontextdaten (z.B.
      Standortdaten); verkn{\"u}pft stellen diese ein immenses Sicherheitsrisiko dar. Wie
      eine Vielzahl an Datendiebst{\"a}hlen belegt, reichen die existierenden
      Datensicherheitssysteme f{\"u}r Mobilplattformen bei weitem nicht aus. Daher bedarf
      es einer Identifikation m{\"o}glicher Angriffsvektoren sowie einer Analyse der
      speziellen Schutzziele eines solchen Systems. Darauf basierend wird die Privacy
      Management Platform, ein Berechtigungssystem, mithilfe des neu eingef{\"u}hrten
      Secure Data Containers zu einem ganzheitlichen Datensicherheitssystem
      erweitert. Dabei zeigt sich, dass diese Kombination alle Schutzziele erf{\"u}llt
      und dennoch hochperformant ist. Obwohl die vorgestellten Prototypen auf Android
      basieren, ist das Konzept auch auf andere App-Plattformen anwendbar.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2015-05&engl=1}
}

@article {ART-2015-03,
   author = {Stefan Silcher and Erwin Gro{\ss} and Jan K{\"o}nigsberger and J{\"o}rg Siegert and Michael Lickefett and Thomas Bauernhansl and Bernhard Mitschang},
   title = {{Mobile Fabriklayoutplanung}},
   journal = {wt Werkstattstechnik online},
   address = {D{\"u}sseldorf},
   publisher = {Springer-VDI-Verlag},
   volume = {105},
   number = {3},
   pages = {96--101},
   type = {Article in Journal},
   month = {March},
   year = {2015},
   language = {German},
   cr-category = {J.6 Computer-Aided Engineering,
                   H.4.2 Information Systems Applications Types of Systems},
   ee = {http://www.werkstattstechnik.de/wt/currentarticle.php?data[article_id]=82746},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Eine stetig steigende Produktvielfalt sowie ein sich schnell {\"a}nderndes
      Marktumfeld erfordern neue Methoden der Planung, um auf diese Komplexit{\"a}t der
      M{\"a}rkte angemessen zu reagieren. Einen wichtigen Stellhebel bildet dabei die
      Wandlungsf{\"a}higkeit, die durch geeignete Planungsmethoden unterst{\"u}tzt und
      optimiert wird. Gerade in der Layoutplanung k{\"o}nnen geeignete Methoden und
      Systeme zu einem Wettbewerbsvorteil f{\"u}hren. Dieser Fachartikel geht am
      Beispiel der Lernfabrik {\^a}€žadvanced Industrial Engineering{\^a}€ś (aIE) und einer
      f{\"u}r das Android-Betriebssystem entwickelten App zur Layoutplanung auf die
      mobile Layoutplanung {\^a}€žvor Ort{\^a}€ś in der Fabrik ein.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2015-03&engl=1}
}

@inbook {INBOOK-2015-06,
   author = {Uwe Breitenb{\"u}cher and Tobias Binz and Oliver Kopp and Frank Leymann and Matthias Wieland},
   title = {{Context-Aware Provisioning and Management of Cloud Applications}},
   series = {Cloud Computing and Services Sciences},
   publisher = {Springer International Publishing},
   pages = {151--168},
   type = {Article in Book},
   month = {December},
   year = {2015},
   doi = {10.1007/978-3-319-25414-2_10},
   isbn = {978-3-319-25413-5},
   keywords = {Application Management; Provisioning; Context; Automation; Cloud Computing},
   language = {English},
   cr-category = {K.6 Management of Computing and Information Systems},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {The automation of application provisioning and management is one of the most
      important issues in Cloud Computing. However, the steadily increasing number of
      different services and software components employed in composite Cloud
      applications leads to a high risk of unintended side effects when different
      technologies work together that bring their own proprietary management APIs.
      Due to unknown dependencies and the increasing diversity and heterogeneity of
      employed technologies, even small management tasks on a single component may
      compromise the whole application functionality for reasons that are neither
      expected nor obvious to non-experts. In this paper, we tackle these issues by
      introducing a method that enables detecting and correcting unintended effects
      of provisioning and management tasks in advance by analyzing the context in
      which the tasks are executed. We validate the method practically and show how
      context-aware expert management knowledge can be applied fully automatically to
      provision and manage running Cloud applications.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INBOOK-2015-06&engl=1}
}

@inbook {INBOOK-2015-02,
   author = {Eva Hoos and Christoph Gr{\"o}ger and Stefan Kramer and Bernhard Mitschang},
   title = {{ValueApping: An Analysis Method to Identify Value-Adding Mobile Enterprise Apps in Business Processes}},
   series = {Enterprise Information Systems},
   publisher = {Springer International Publishing},
   series = {Lecture Notes in Business Information Processing},
   volume = {227},
   type = {Article in Book},
   month = {September},
   year = {2015},
   language = {English},
   cr-category = {H.1.1 Systems and Information Theory},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Applications of Parallel and Distributed Systems},
   abstract = {Mobile enterprise apps provide novel possibilities for the optimization and
      redesign of business processes, e.g., by the elimination of paper-based data
      acquisitioning or ubiquitous access to up-to-date information. To leverage
      these business potentials, a critical success factor is the identification and
      evaluation of valueadding MEAs based on an analysis of the business process.
      For this purpose, we present ValueApping, a systematic analysis method to
      identify usage scenarios for value-adding mobile enterprise apps in business
      processes and to analyze their business benefits. We describe the different
      analysis steps and corresponding analysis artifacts of ValueApping and discuss
      the results of a case-oriented evaluation in the automotive industry.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INBOOK-2015-02&engl=1}
}