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Hinweis: Es ist Studierenden ausdrücklich empfohlen, sich frühzeitig bei den verschiedenen Arbeitsgruppen über mögliche Themen der Abschlussarbeit zu informieren. WWW-Seiten wie diese hier sind ein guter erster Anlaufpunkt, und es ist eine gute Idee, sich vor einem Gespräch mit einem potenziellen Betreuer (Professor, Assistenten -- generell die Dozenten von Lehrveranstaltungen) über mögliche Themen einen Blick auf diese Seiten zu werfen. Es ist jedoch erfahrungsgemäß schwierig, auf solchen Seiten vollständige und aktuelle Informationen bereitzustellen; sie sollten daher eher als grober Indikator der jeweils möglichen Themenfelder dienen denn als konkrete Ausschreibungen. Um zu erfahren, welche Themen konkret verfügbar sind, zu dem angestrebten Zeitrahmen, sollte man auf jeden Fall die Dozenten konsultieren.

Die möglichen Themen sind im Folgenden thematisch gruppiert. Die Zahlen vor der Themenbeschreibung stehen für Prioritäten. Je kleiner die Zahl, desto wichtiger ist uns das Thema.

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REAKT – Railway Research

Advisors: Niklas Rentz, Alexander Schulz-Rosengarten, Reinhard von Hanxleden.

In a nutshell, the REAKT-Initiative aims to make railway systems fit for the future, with the track Malente – Lütjenburg available as real-world laboratory (https://www.schiene-m-l.de/).

There is a broad set of topics to be worked on, also as a Bachelor or Master's thesis.

More information is found at the REAKT Project 2023 Home, but as things are developing faster than this web site can keep up, we recommend to contact one of the advisors listed above.

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Automatic Graph Layout

Advisors: Christoph Daniel Schulze Sören Domrös, Max Kasperowski, Reinhard von Hanxleden.

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Die Entwicklung geschieht im Eclipse Layout Kernel-Projekt (kurz ELK), einem offiziellen Eclipse-Projekt welches hauptsächlich wir betreuen und weiter entwickeln. Ergebnisse in diesem Bereich fließen damit einer tatsächlich existierenden Nutzerbasis zu.

Modeling Pragmatics

Advisors: Christoph Daniel Schulze, Reinhard von Hanxleden

  • Post-Processing Label Placement with Label Management (Bachelor, Master)
    This is about implementing a stand-alone label placement algorithm that can place node and edge labels after everything else has already been placed. Since there might not be enough space to place all labels, the algorithm should provide different options of coping with such situations. One would be to hide such labels, another one would be to apply label management to them.
  • Standalone Edge Routing (Master)
  • Compound Graph Exploration (Bachelor, Master)
    A new graph exploration approach should be examined which is uses different zoom levels for different compound nodes. This tries to map the "Google Maps approach" of only showing the information of interest at any given zoom level to the field of graph exploration.
  • Improvements to Spline Edge Routing (Bachelor, Master)
    Spline edge routing closely follows the routes orthogonal edges would take. A Bachelor's thesis could work on improving how splines connect to their end points to make the results look more natural. A Master's thesis could look at improving the routes splines take through a diagram more generally.
  • Interactivity for Further Diagram Elements and Layout Algorithms (Bachelor, Master)
  • Relative Interactivity Constraints (Bachelor, Master)
  • Polishing and Evaluating Interactive User Experiences (Bachelor, Master)
  • Interaction Techniques for Large Diagrams (Bachelor, Master)
  • Control Flow Graph Exploration / Visualization (Bachelor)
    Use pragmatics concepts (automatic layout, focus & context) for exploring/visualizing control flow graphs and specific paths, eg. as computed by OTAWA WCET analysis tool, eg. using KLighD.

Topics

Further possible thesis topics can be found in ELK's GitHub repository. Note, however, that some issues there may already be worked on.

Modeling Pragmatics

Advisors: Niklas Rentz, Reinhard von Hanxleden

Topics

Semantics, Synchronous Languages and Model-based Design

Advisors: Steven Smyth, Alexander Schulz-Rosengarten, Reinhard v. Hanxleden

Synchronous languages are well-established for the design of embedded, in particular safety-critical systems. One of our research areas concerns the further development of such languages and their efficient compilation. Specifically, we explore the paradigm of "sequential constructiveness" for reconciling familiar, imperative programming concepts with the sound grounding of synchronous languages. One language we have developed to try out and validate our concepts is the SCCharts language, which keeps evolving and thus offers many opportunities for student theses.

SCCharts Code Generation & Optimizations

  • Optimization of the SCCharts compiler/transformations (Bachelor/Master)
    Profile the actual SCCharts compiler/transformations and apply optimizations; also evaluate the possibility to use multiple cores for compilation.
  • Efficient data dependency & scheduling analyses in SCCharts (Master/Bachelor)
    Implement analyses for data dependencies and scheduling (e.g. tick boundaries) for SCCharts to improve static scheduling of the compiler.
  • Javascript code generation (Bachelor/Master)
    Implement a javascript code generation for SCCharts. Integrate with simulation and (environment) visualization to deploy a complete example as standalone web page. Compare with HipHop.js based on Esterel.

SCCharts Simulation

  • Visualization of Model-based Simulation via Tracing (Bachelor/Master)
    Use the already implemented Model-to-Model-Tracing in KIELER to visualize simulations. 
  • Core SCCharts Interpreter with dynamic Scheduling (Master/Bachelor)
    Implement an Interpreter for Core SCCharts that supports SC Policies.
  • Live Debugging of Statecharts (Master/Bachelor)
    Implement a dedicated debugging view for SCCharts.
  • Microstep-Simulation of Statecharts (Master/Bachelor)
    Implement a method to do microstep simulation with SCCharts.

Model-based C Code Compilation

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Safety Analysis

Advisors: Jette Petzold, Reinhard v. Hanxleden

Topics