Bauhaus University, Weimar

About: Bauhaus University, Weimar is a education organization based out in Weimar, Thüringen, Germany. It is known for research contribution in the topics: Finite element method & Isogeometric analysis. The organization has 1421 authors who have published 2998 publications receiving 104454 citations. The organization is also known as: Bauhaus-Universität Weimar & Hochschule für Architektur und Bauwesen.

WORDGRAPH: Keyword-in-Context Visualization for NETSPEAK's Wildcard Search

Abstract: The WORDGRAPH helps writers in visually choosing phrases while writing a text. It checks for the commonness of phrases and allows for the retrieval of alternatives by means of wildcard queries. To support such queries, we implement a scalable retrieval engine, which returns high-quality results within milliseconds using a probabilistic retrieval strategy. The results are displayed as WORDGRAPH visualization or as a textual list. The graphical interface provides an effective means for interactive exploration of search results using filter techniques, query expansion, and navigation. Our observations indicate that, of three investigated retrieval tasks, the textual interface is sufficient for the phrase verification task, wherein both interfaces support context-sensitive word choice, and the WORDGRAPH best supports the exploration of a phrase's context or the underlying corpus. Our user study confirms these observations and shows that WORDGRAPH is generally the preferred interface over the textual result list for queries containing multiple wildcards.

Meta Analysis within Authorship Verification

Abstract: In an authorship verification problem one is given writing examples from an author A, and one is asked to determine whether or not each text in fact was written by A. In a more general form of the authorship verification problem one is given a single document d only, and the question is whether or not d contains sections from other authors. The heart of authorship verification is the quantization of an author's writing style along with an outlier analysis to identify anomalies. Human readers are well-versed in detecting such spurious sections since they combine a highly-developed sense for wording with context-dependent meta knowledge in their analysis. The intention of this paper is to compile an overview of the algorithmic building blocks for authorship verification. In particular, we introduce authorship verification problems as decision problems, discuss possibilities for the use of meta knowledge, and apply meta analysis to post- process unreliable style analysis results. Our meta analysis combines a confidence-based majority decision with the unmasking approach of Koppel and Schler. With this strategy we can improve the analysis quality in our experiments by 33% in terms of the F-measure.

An Algorithm to compute damage from load in composites

Abstract: We present a new method to model fracture of concrete based on energy minimisation. The concrete is considered on the mesoscale as composite consisting of cement paste, aggregates and micro pores. In this first step, the alkali-silica reaction is taken into account through damage mechanics though the process is more complex involving thermo-hygro-chemo-mechanical reaction. We use a non-local damage model that ensures the well-posedness of the boundary value problem (BVP). In contrast to existing methods, the interactions between degrees of freedom evolve with the damage evolutions. Numerical results are compared to analytical and experimental results and show good agreement.

Sustainable design of geopolymers. Evaluation of raw materials by the integration of economic and environmental aspects in the early phases of material development

Abstract: Materials, defined as solids with a function, are basic modules for products in our everyday living and work environment. The development of products facing a complex qualification profile, which includes besides other technical, but also economic and ecological aspects. The two later aspects are not sufficient included in material development, especially from a Life cycle point of view, to provide them for the phase of product development.