A multi-agent system can be analyzed and specified as an organization consisting of roles and their relations. The performance of an organization depends on many factors among which the type of its organizational structure, i.e., the set of relations holding between its roles. This work focuses on the structure of organizations and addresses the issue of the analysis, evaluation, and comparison...

A phase field method is developed to investigate the morphological evolution of a vesicle in an electric field, taking into account coupled mechanical and electric effects such as bending, osmotic pressure, surface tension, flexoelectricity, and dielectricity of the membrane. The energy of the system is formulated in terms of a continuous phase field variable and the electric potential. The gov...

We introduce a novel validation framework to measure the true robustness of learning models for real-world applications by creating sourceinclusive and source-exclusive partitions in a dataset via clustering. We develop a robustness metric derived from source-aware lower and upper bounds of model accuracy even when data source labels are not readily available. We clearly demonstrate that even o...

In this work a new method for CAD model simpliication is presented. The method is especially suited for simpliications performed in preparation for meshing the models. It uses a local analysis approach based on a clustering procedure. The method provides a generic approach for model simpliication. It is eecient and robust. It works on non-manifold models, free-form and linear faces, and models ...

Specifications for reactive systems often consist of environment assumptions and system guarantees. An implementation should not only be correct, but also robust in the sense that it behaves reasonably even when the assumptions are (temporarily) violated. We present an extension of the requirements analysis and synthesis tool RATSY that is able to synthesize robust systems from GR(1) specificat...

A journal set in an interdisciplinary or newly developing area can be determined by including the journals classified under the most relevant ISI Subject Categories into a journal-journal citation matrix. Despite the fuzzy character of borders, factor analysis of the citation patterns enables us to delineate the specific set by discarding the noise. This methodology is illustrated using communi...

The paper provides a set of algorithms for performing set operations on polygonal regions in the plane using standard floating-point arithmetc. The algorithms are robust, guaranteeing both topological consistency and numerical accuracy. Each polygon edge is modelled as an implicit or explicit polygonal curve which stays within some distance fl of the original line segment. If the curve is impli...

We propose a novel clustering scheme for spatio-temporal segmentation of sparse motion fields obtained from feature tracking. The approach allows for the segmentation of meaningful motion components in a scene, such as shortand long-term motion of single objects, groups of objects and camera motion. The method has been developed within a project on the analysis of low-quality archive films. We ...

This problem has been solved by Watanabe et al. [14], [13] by introducing a distributed time-delay in the observer dynamic system. Also, Pearson et al. [10] and Ramos et al. [12] have built observers for delayed-state systems by computing the unstable eigenvalues of the system under consideration which, in some case, may be a very difficult numerical problem [7]. In those papers the robustness ...

Theory suggests that subjective well-being is affected by income comparisons and adaptation to income. Empirical tests of the effects often rely on self-constructed measures from survey data. This paper shows that results can be highly sensitive to simple parameter changes. Using large-scale panel data from Germany and the UK, I report cases where plausible variations in the underlying income t...