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.

Open Source, Open Science, and the Replication Crisis in HCI

Abstract: The open-source model of software development is an established and widely used method that has been making inroads into several scientific disciplines which use software, thereby also helping much-needed efforts at replication of scientific results. However, our own discipline of HCI does not seem to follow this trend so far. We analyze the entire body of papers from CHI 2016 and CHI 2017 regarding open-source releases, and compare our results with the discipline of bioinformatics. Based on our comparison, we suggest future directions for publication practices in HCI in order to improve scientific rigor and replicability.

Computational Argumentation Synthesis as a Language Modeling Task

Abstract: Synthesis approaches in computational argumentation so far are restricted to generating claim-like argument units or short summaries of debates. Ultimately, however, we expect computers to generate whole new arguments for a given stance towards some topic, backing up claims following argumentative and rhetorical considerations. In this paper, we approach such an argumentation synthesis as a language modeling task. In our language model, argumentative discourse units are the “words”, and arguments represent the “sentences”. Given a pool of units for any unseen topic-stance pair, the model selects a set of unit types according to a basic rhetorical strategy (logos vs. pathos), arranges the structure of the types based on the units’ argumentative roles, and finally “phrases” an argument by instantiating the structure with semantically coherent units from the pool. Our evaluation suggests that the model can, to some extent, mimic the human synthesis of strategy-specific arguments.

An Analysis and a Model of 3D Interaction Methods and Devices for Virtual Reality

Abstract: The growing power of computing devices allows the representation of three-dimensional interactive virtual worlds. Interfaces with such a world must profit from our experience in the interaction with the real world. This paper corrects the early taxonomy of interaction devices and actions introduced by Foley for screen based interactive systems by adapting it to real world and to virtual reality systems. Basing on the taxonomy derived, the paper presents a model for a Virtual Reality system based on Systems Theory. The model is capable of including both traditional event-based interaction input devices, as well as continuous input devices. It is strongly device oriented, and allows to model mathematically all currently possible input devices for Virtual Reality. The model has been used for the implementation of a general input device library serving as an abstraction layer to a Virtual Reality system.

Computational model generation and RVE design of self-healing concrete

Abstract: Computational homogenization is a versatile tool that can extract effective properties of heterogeneous or composite material through averaging technique. Self-healing concrete (SHC) is a heterogeneous material which has different constituents as cement matrix, sand and healing agent carrying capsules. Computational homogenization tool is applied in this paper to evaluate the effective properties of self-healing concrete. With this technique, macro and micro scales are bridged together which forms the basis for multi-scale modeling. Representative volume element (RVE) is a small (microscopic) cell which contains all the microphases of the microstructure. This paper presents a technique for RVE design of SHC and shows the influence of volume fractions of different constituents, RVE size and mesh uniformity on the homogenization results.

Qualitative and quantitative schlieren optical measurement of the human thermal plume

Abstract: A new large-field, high-sensitivity, single-mirror coincident schlieren optical instrument has been installed at the Bauhaus-Universitat Weimar for the purpose of indoor air research. Its performance is assessed by the non-intrusive measurement of the thermal plume of a heated manikin. The schlieren system produces excellent qualitative images of the manikin's thermal plume and also quantitative data, especially schlieren velocimetry of the plume's velocity field that is derived from the digital cross-correlation analysis of a large time sequence of schlieren images. The quantitative results are compared with thermistor and hot-wire anemometer data obtained at discrete points in the plume. Good agreement is obtained, once the differences between path-averaged schlieren data and planar anemometry data are reconciled.