Visualization of chiral condensate at finite temperature on the lattice

We perform an analysis of the topological and chiral vacuum structure of four-dimensional QCD on the lattice at finite temperature. From correlation functions we show the existence of local correlations between the topological charge density and the quark condensate on gauge average. We comment on sizes of clusters of nontrivial chiral condensate and of instantons in full QCD. By analysis of individual gauge configurations, we demonstrate that at the places in Euclidian space-time, where instantons are present, amplified production of quark condensate occurs.Comment: 5 pages, 3 EPS figures, Talk presented at ``QCD97'', to appear in Nucl. Phys. B (Proc. Suppl.

Visualization of topological objects in the deconfinement phase of pure QCD

In the last years it turned out that instantons and monopoles have a certain local correlation in four-dimensional QCD. It was demonstrated by several groups independently and by different methods that at the locations of instantons also monopoles in the maximal abelian projection can be found with enhanced probability. Further we observed such nontrivial correlation functions in the deconfinement phase. We continue our visualization project to analyze several specific gauge-field configurations.Comment: 3 pages, 2 EPS figures, Poster presented at "Lattice'97", to appear in Nucl. Phys. B (Proc. Suppl.

Visualization of topological objects in QCD

Recently evidence appeared that instantons and monopoles have a certain local correlation in four-dimensional pure $SU(2)$ and $SU(3)$ gauge theory. We visualize several specific gauge field configurations and show directly that there is an enhanced probability for finding maximally projected abelian monopole loops in the vicinity of instantons. This feature is independent of the topological charge definition used.Comment: Poster presented at LATTICE96(poster), 4 pages, 14 eps figure

Exploring the Use of 360-degree Video for Teacher-Training Reflection in Higher Education

360-degree videos offer new features to extend video-based learning scenarios. In combination with virtual reality (VR) displays such as full-feature or cardboard displays the use of 360-degree video can further support the feeling of immersion and provide more degrees of freedom to look around. This paper presents preliminary results from an interpretive case study (n=16) evaluating the use of 360-degree videos for video reflection of teacher training sessions in a business education context. In two courses students were offered to record their teaching sessions with a 360-degree video camera in order to reflect on their teaching performance. The process of video reflection consisted of watching the video multiple times and answering specific questions on didactics, content and performance. For this case study participants could explore three viewing experiences, a head-mounted display, a cardboard viewer and a web-based player. Based on their experiences made, they were interviewed focusing on the usefulness for video-based self- reflection. Preliminary results show that 360-degree videos are embraced positively and perceived more useful than regular video for reflection. However, challenges were identified for the scalability and usability of 360-degree video content

Multiresolution wavelet analysis of heartbeat intervals discriminates healthy patients from those with cardiac pathology

We applied multiresolution wavelet analysis to the sequence of times between human heartbeats (R-R intervals) and have found a scale window, between 16 and 32 heartbeats, over which the widths of the R-R wavelet coefficients fall into disjoint sets for normal and heart-failure patients. This has enabled us to correctly classify every patient in a standard data set as either belonging to the heart-failure or normal group with 100% accuracy, thereby providing a clinically significant measure of the presence of heart-failure from the R-R intervals alone. Comparison is made with previous approaches, which have provided only statistically significant measures.Comment: 5 pages, 4 figures, to appear in Phys. Rev. Letter

Visualization of topological structure and chiral condensate

We perform a mutual analysis of the topological and chiral vacuum structure of four-dimensional QCD on the lattice at finite temperature. We demonstrate that at the places where instantons are present, amplified production of quark condensate takes place. It turns out for full QCD that the clusters of nontrivial chiral condensate have a size of about 0.4 fm corresponding to the instanton sizes in the same configurations.Comment: 3 pages, 3 EPS figures, Poster presented at "Lattice'97", to appear in Nucl. Phys. B (Proc. Suppl.