@inproceedings {INPROC-2010-97,
   author = {Uwe-Philipp K{\"a}ppeler and Oliver Zweigle and Kai H{\"a}u{\ss}ermann and Hamid Rajaie and Andreas Tamke and Andreas Koch and Bernd Eckstein and Fabian Aichele and Daniel DiMarco and Adam Berthelot and Thomas Walter and Paul Levi},
   title = {{1.RFC Stuttgart Team Description 2010}},
   booktitle = {RoboCup Team Description Papers 2010},
   editor = {RoboCup},
   address = {Singapur},
   publisher = {Online},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {1--10},
   type = {Conference Paper},
   month = {June},
   year = {2010},
   keywords = {RoboCup; RFC; Stuttgart},
   language = {English},
   cr-category = {I.2.9 Robotics},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2010-97/INPROC-2010-97.pdf},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {The 1. RFC Stuttgart robot soccer team is used as a testbed for multi-agent
      software architecture principles in dynamic real time domains. The current
      research activities focus on a system for advanced data logging using augmented
      reality and automated camera guidance. It includes approaches from the {\"\i}¬eld
      of real-time robot message logging, situation based camera control and 3D video
      visualisation. Another research focus is a genetic algorithm for optimizing the
      motorcontrol which enables our robots to adapt to di{\"\i}¬€erent {\"\i}¬‚oor and carpet
      conditions.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-97&engl=1}
}

@inproceedings {INPROC-2010-44,
   author = {Kai H{\"a}ussermann and Christoph Hubig and Paul Levi and Frank Leymann and Oliver Simoneit and Matthias Wieland and Oliver Zweigle},
   title = {{Understanding and designing situation-aware mobile and ubiquitous computing systems - an interdisciplinary analysis on the recognition of situation with uncertain data using situation templates.}},
   booktitle = {Proceedings of International Conference on Mobile, Ubiquitous and Pervasive Computing},
   publisher = {WASET},
   institution = {University of Stuttgart : Collaborative Research Center SFB 627 (Nexus: World Models for Mobile Context-Based Systems), Germany},
   pages = {329--339},
   type = {Conference Paper},
   month = {March},
   year = {2010},
   issn = {2070-3724},
   keywords = {context-awareness; ethics; facilitation of system use through workflows},
   language = {English},
   cr-category = {H.1.0 Information Systems Models and Principles General,
                   H.1.1 Systems and Information Theory,
                   H.1.2 User/Machine Systems},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Philosophie, Abteilung f{\"u}r Wissenschaftstheorie und Technikphilosophie (IP/WTTP);
                  University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding;
                  University of Stuttgart, Institute of Architecture of Application Systems},
   abstract = {Using spatial models as a shared common basis of information about the
      environment for different kinds of context- aware systems has been a heavily
      researched topic in the last years. Thereby the research focused on how to
      create, to update, and to merge spatial models so as to enable highly dynamic,
      consistent and coherent spatial models at large scale. In this paper however,
      we want to concentrate on how context-aware applications could use this
      information so as to adapt their behavior according to the situation they are
      in. The main idea is to provide the spatial model infrastructure with a
      situation recognition component based on generic situation templates. A
      situation template is - as part of a much larger situation template library -
      an abstract, machine- readable description of a certain basic situation type,
      which could be used by different applications to evaluate their situation. In
      this paper, different theoretical and practical issues - technical, ethical and
      philosophical ones - are discussed important for understanding and developing
      situation dependent systems based on situation templates. A basic system design
      is presented which allows for the reasoning with uncertain data using an
      improved version of a learning algorithm for the automatic adaption of
      situation templates. Finally, for supporting the development of adaptive
      applications, we present a new situation-aware adaptation concept based on
      workflows.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-44&engl=1}
}

@inproceedings {INPROC-2010-35,
   author = {Julia M{\"o}hrmann and Gunter Heidemann and Oliver Siemoneit and Christoph Hubig and Uwe-Philipp K{\"a}ppeler and Paul Levi},
   title = {{Context Generation with Image Based Sensors: An Interdisciplinary Enquiry on Technical and Social Issues and their Implications for System Design}},
   booktitle = {Proceedings of World Academy of Science, Engineering and Technology},
   address = {Capetown},
   publisher = {WASET},
   institution = {University of Stuttgart : Collaborative Research Center SFB 627 (Nexus: World Models for Mobile Context-Based Systems), Germany},
   pages = {262--268},
   type = {Conference Paper},
   month = {January},
   year = {2010},
   keywords = {Context-aware computing; ethical and social issues; image recognition; requirements in system design},
   language = {English},
   cr-category = {I.4.1 Digitization and Image Capture,
                   I.4.8 Image Processing and Computer Vision Scene Analysis},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Philosophie, Abteilung f{\"u}r Wissenschaftstheorie und Technikphilosophie (IP/WTTP);
                  University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding;
                  University of Stuttgart, Institute of Visualisation and Interactive Systems, Visualisation and Interactive Systems},
   abstract = {Image data holds a large amount of different context information. However, as
      of today, these resources remain largely untouched. It is thus the aim of this
      paper to present a basic technical framework which allows for a quick and easy
      exploitation of context information from image data especially by non-expert
      users. Furthermore, the proposed framework is discussed in detail concerning
      important social and ethical issues which demand special requirements in system
      design. Finally, a first sensor prototype is presented which meets the
      identified requirements. Additionally, necessary implications for the software
      and hardware design of the system are discussed, rendering a sensor system
      which could be regarded as a good, acceptable and justifiable technical and
      thereby enabling the extraction of context information from image data.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-35&engl=1}
}

@inproceedings {INPROC-2010-33,
   author = {Uwe-Philipp K{\"a}ppeler and Markus H{\"o}ferlin and Paul Levi},
   title = {{3D Object Localization via Stereo Vision using an Omnidirectional and a Perspective Camera}},
   booktitle = {Proceedings of the IEEE International Conference on Robotics and Automation, Workshops and Tutorials},
   address = {Anchorage, USA},
   publisher = {IEEE Press},
   institution = {University of Stuttgart : Collaborative Research Center SFB 627 (Nexus: World Models for Mobile Context-Based Systems), Germany},
   pages = {1--6},
   type = {Workshop Paper},
   month = {May},
   year = {2010},
   language = {English},
   cr-category = {I.2.9 Robotics,
                   I.2.10 Vision and Scene Understanding,
                   I.4.0 Image Processing and Computer Vision General},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {Abstract—This paper describes our stereo vision method which is combining an
      omnidirectional and a perspective camera. It was developed for our robot soccer
      team 1. RFC Stuttgart, which attends RoboCup competitions every year. The
      common approach to stereovision leads to high deviations from the real
      positions when it is not possible to synchronize the cameras for tracking
      moving objects. Therefore we introduce an object localization in RoboCup
      combining the most accurate position information from each camera system. Our
      method for a reliable three-dimensional position estimation can be used to
      track a flying ball after being kicked by a robot.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-33&engl=1}
}

@inproceedings {INPROC-2010-117,
   author = {Oliver Zweigle and Uwe-Philipp K{\"a}ppeler and Kai H{\"a}u{\ss}ermann and Paul Levi},
   title = {{Event Based Distributed Real-time Communication Architecture for Multi-Agent Systems}},
   booktitle = {The ICCIT 2010 International Conference Proceedings},
   address = {Seoul},
   publisher = {IEEE},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   series = {Computer Sciences and Convergence Information Technology},
   volume = {5},
   pages = {503--510},
   type = {Conference Paper},
   month = {November},
   year = {2010},
   isbn = {978-89-88678-29-9},
   keywords = {communication; network; robotics; robot; udp; tcp; robocup},
   language = {English},
   cr-category = {I.2.9 Robotics},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {In this paper an event-based distributed real-time communication architecture
      for multi-agent systems is presented. The architecture was designed regarding
      the needs of hardware-based multi-agent systems, especially robotic systems.
      This includes in particular fast and reliable transportation of messages in
      unstable wireless networks. Furthermore the architecture is usable for
      different agent-based software systems and allows communication between
      different systems even if they have a complete different representation of
      internal data. The architecture was evaluated in the RoboCup scenario with a
      multi-agent system of 5 robots interacting in a highly dynamic environment.
      Using this system, the RoboCup team of the University of Stuttgart won the
      RoboCup German Open Championship and World Championship in 2009.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-117&engl=1}
}

@inproceedings {INPROC-2010-113,
   author = {Paul Levi and Uwe-Philipp Kaeppeler},
   title = {{Recognition of robot actions without human interaction}},
   booktitle = {Proceedings of the IEEE/RSJ 2010 International Conference on Intelligent Robots and Systems, Workshops and Tutorials},
   address = {Taipei, Taiwan},
   publisher = {IEEE},
   institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
   pages = {23--38},
   type = {Workshop Paper},
   month = {October},
   year = {2010},
   keywords = {situation recognition, cognitive robotics},
   language = {English},
   cr-category = {I.2.9 Robotics},
   ee = {http://www.roboearth.org/irosworkshop2010},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {The autonomous robotics community is starting to tackle more and more complex
      manipulation activities, such as doing household chores, in more and more
      realistic operating environments such as human working and living environments.
      One of the biggest challenges in such applications is the open-endedness of the
      task domains and the enormous amount of knowledge needed to achieve reliable
      task success. Luckily almost every robot has access to the World Wide Web, the
      world's largest knowledge and information source. While up to now robots have
      only made limited use of the web as an information and knowledge source the
      opportunities are obvious and manifold. Robots can use search engines such as
      Google images, video, or 3D warehouse. They can also ask for the help from
      humans using tools such as the Amazon Mechanical Turk. Or, robots could perhaps
      form communities to build up huge common knowledge bases, much in the same
      spirit as people work on Wikipedia. Or, robots could reproduce the situations
      they cannot handle in web games and observe how the players deal with the
      situations and what the consequences might be. This workshop aims at bringing
      robotics researchers together that investigate the ways that robots can make
      good use of the Internet infrastructure. The workshop will provide a
      state-of-the-art overview of the field and will offer ample room for discussion
      to jointly identify new challenges and opportunities for future research.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2010-113&engl=1}
}

@article {ART-2010-19,
   author = {Viktor Avrutin and Michael Schanz and Laura Gardini},
   title = {{Self-similarity of the bandcount adding structures: Calculation by map replacement}},
   journal = {Regular and Chaotic Dynamics},
   publisher = {Springer Verlag},
   volume = {15},
   number = {6},
   pages = {658--703},
   type = {Article in Journal},
   month = {December},
   year = {2010},
   doi = {10.1134/S1560354710060055},
   keywords = {piecewise-linear maps, crisis bifurcations, chaotic attractors, bandcount adding and doubling, self-similarity, renormalization},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {Recently it has been demonstrated that the domain of robust chaos close to the
      periodic domain, which is organized by the period-adding structure, contains an
      infinite number of interior crisis bifurcation curves. These curves form the
      so-called bandcount adding scenario, which determines the occurrence of
      multi-band chaotic attractors. The analytical calculation of the interior
      crisis bifurcations represents usually a quite sophisticated and cumbersome
      task. In this work we demonstrate that, using the map replacement approach, the
      bifurcation curves can be calculated much easier. Moreover, using this approach
      recursively, we confirm the hypothesis regarding the self-similarity of the
      bandcount adding structure.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-19&engl=1}
}

@article {ART-2010-18,
   author = {Laura Gardini and Fabio Tramontana and Viktor Avrutin and Schanz Michael},
   title = {{Border-Collision Bifurcations in 1D Piecewise-Linear Maps and Leonov's Approach}},
   journal = {International Journal of Bifurcation and Chaos},
   publisher = {World Scientific Publishing Company},
   volume = {20},
   number = {10},
   pages = {3085--3104},
   type = {Article in Journal},
   month = {December},
   year = {2010},
   doi = {10.1142/S021812741002757X},
   keywords = {Discontinuous piecewise-linear 1D maps; border collision bifurcations; adding mechanism; Farey structure},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {50 years ago (1959) in a series of publications by Leonov, a detailed
      analytical study of the nested period adding bifurcation structure occurring in
      piecewise-linear discontinuous 1D maps was presented. The results obtained by
      Leonov are barely known, although they allow the analytical calculation of
      border-collision bifurcation subspaces in an elegant and much more efficient
      way than it is usually done. In this work we recall Leonov's approach and
      explain why it works. Furthermore, we slightly improve the approach by avoiding
      an unnecessary coordinate transformation, and also demonstrate that the
      approach can be used not only for the calculation of border-collision
      bifurcation curves.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-18&engl=1}
}

@article {ART-2010-17,
   author = {Viktor Avrutin and Michael Schanz and Laura Gardini},
   title = {{Calculation of Bifurcation Curves by Map Replacement}},
   journal = {International Journal of Bifurcation and Chaos},
   publisher = {World Scientific Publishing Company},
   volume = {20},
   number = {10},
   pages = {3105--3135},
   type = {Article in Journal},
   month = {December},
   year = {2010},
   doi = {10.1142/S0218127410027581},
   keywords = {Discontinuous piecewise-linear 1D map; border collision bifurcation curves; map replacement technique; rested period adding; Farey structure.},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering},
   contact = {Viktor.Avrutin@ipvs.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {The complex bifurcation structure in the parameter space of the general
      piecewise-linear scalar map with a single discontinuity - nowadays known as
      nested period adding structure - was completely studied analytically by N. N.
      Leonov already 50 years ago. He used an elegant and very efficient recursive
      technique, which allows the analytical calculation of the border-collision
      bifurcation curves, causing the nested period adding structure to occur. In
      this work, we have demonstrated that the application of Leonov's technique is
      not resticted to that particular bifurcation structure. On the contrary, the
      presented map replacement approach, which is an extension of Leonov's
      technique, allows the analytical calculation of border-collision bifurcation
      curves for periodic orbits with high periods and complex symbolic sequences
      using appropriate composite maps and the bifurcation curves for periodic orbits
      with much lower periods.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-17&engl=1}
}

@article {ART-2010-13,
   author = {Viktor Avrutin and Enric Fossas and Albert Granados and Michael Schanz},
   title = {{Virtual orbits and two-parameter bifurcation analysis in a ZAD-controlled buck converter}},
   journal = {Zeitschrift: Nonlinear Dynamics},
   editor = {Springer-Verlag},
   publisher = {Online},
   pages = {1--15},
   type = {Article in Journal},
   month = {August},
   year = {2010},
   doi = {10.1007/s11071-010-9782-7},
   keywords = {power electronics; zero average dynamics (ZAD) control; bifurcations; non-smooth systems; bifurcations; virtual orbits},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering},
   contact = {Albert.Granados@ipvs.uni-stuttgart.de Viktor.Avrutin@ipvs.uni-stuttgart.de Michael.Schanz@informatik.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {Based on a recently obtained Lemma about periodic orbits in linear systems with
      a piecewise-linear non-autonomous periodic control, we describe analytically
      the bifurcation structures in a ZAD-controlled buck converter. This analytical
      description shows that the period doubling bifurcation in this system may be
      both subcritical or supercritical. Considering virtual orbits we show how a
      saddle-node bifurcation becomes feasible and how it is destroyed at a new
      codimension-2 bifurcation point, where the subcritical period doubling
      bifurcation becomes supercritical. We also show that this phenomenon does not
      take place when the error surface in the ZAD conditions piecewise-linear
      defined.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-13&engl=1}
}

@article {ART-2010-05,
   author = {Viktor Avrutin and Michael Schanz and Laura Gardini},
   title = {{On a special type of border-collision bifurcations occurring at infinity}},
   journal = {Physica D},
   publisher = {Elsevier},
   volume = {239},
   number = {13},
   pages = {1083--1094},
   type = {Article in Journal},
   month = {July},
   year = {2010},
   doi = {10.1016/j.physd.2010.02.015},
   keywords = {Border-collision bifurcations; Piecewise-smooth maps; Piecewise-linear maps},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering,
                   G.2 Discrete Mathematics},
   contact = { Michael.Schanz@informatik.uni-stuttgart.deViktor.Avrutin@informatik.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {In piecewise-smooth dynamical systems, the regions of existence of a periodic
      orbit are typically parameter sub-spaces confined by border-collision
      bifurcations of this orbit. We demonstrate that additionally to the usual
      border-collision bifurcations occurring at finite points in the state space
      there exist also border-collision bifurcations occurring at infinity.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-05&engl=1}
}

@article {ART-2010-04,
   author = {Viktor Avrutin and Partha Sharathi Dutta and Michael Schanz and Banerjee Soumitro},
   title = {{Influence of a square-root singularity on the behaviour of piecewise smooth maps}},
   journal = {Nonlinearity},
   publisher = {IOP Science},
   volume = {23},
   number = {2},
   pages = {445--463},
   type = {Article in Journal},
   month = {February},
   year = {2010},
   doi = {10.1088/0951-7715/23/2/012},
   keywords = {Border-collision bifurcations; Piecewise-smooth maps},
   language = {English},
   cr-category = {J.2 Physical Sciences and Engineering,
                   G.2 Discrete Mathematics},
   ee = {http://iopscience.iop.org/0951-7715/23/2/012},
   contact = { Michael.Schanz@informatik.uni-stuttgart.deViktor.Avrutin@informatik.uni-stuttgart.de},
   department = {University of Stuttgart, Institute of Parallel and Distributed Systems, Image Understanding},
   abstract = {We consider a one-dimensional continuous piecewise smooth nonlinear map with
      square-root singularity. For particular choice of the parameters, this map
      represents the normal form of discrete-time representation of impact oscillator
      near grazing bifurcation. Owing to the nonlinearity, the map exhibits smooth
      and nonsmooth bifurcations very closely related to each other. Our main aim is
      to study how the nonlinearity influences the known results of nonsmooth
      bifurcations and the interaction between smooth and nonsmooth bifurcations
      considering the whole parameter space. We also explain the organizing source of
      several atypical bifurcation phenomena using the concept of multi-parametric
      bifurcation.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2010-04&engl=1}
}