The flow of polymer solutions in the high Elasticity number, El, regime in complex geometries may lead to strong viscoelastic behaviour and eventually become unstable as the Weissenberg number, Wi, is increased beyond a critical level. So far, the success of numerical simulations in predicting the highly non-linear behaviour of polymer solutions in complex flows has been limited. In this thesis, selected constitutive models are evaluated under the high El flow regime in the cross-slot and contraction benchmark flows using a numerical technique based on the finite volume method. The numerical technique is implemented within the OpenFOAM framework and thoroughly validated in the benchmark flow. A modification to the FENE dumbbell model based on the non-affine deformation of polymer solutions is proposed, which enabled the prediction of some non-linear material functions and also enhanced numerical stability, allowing a higher Wi to be attained. Asymmetric flow instability in the cross-slot flow has been studied. Time-dependent stability diagrams were constructed based on Wi and the strain, ε, both of which govern the stretching of a polymer chain. In the contraction flow, elastic instability is simulated for the first time in this geometry. Substantial time-dependent asymmetric flow patterns were predicted as seen in experiments. The effect of the contraction ratio is investigated through a stability diagram. Three-dimensional finite element simulations were also carried out to study the effect of the aspect ratio in the contraction flow of a Phan-Thien-Tanner fluid. The simulations suggest that a lip vortex mechanism is a signature for the onset of strong viscoelastic behaviour.

The thesis examines the theory of formal languages in the field of context-free grammars. It focuses mainly on the possibilities and models of collaborating grammars to solve a common problem. In this context, it presents grammatical systems that have been designed as a formal means for describing distributed and parallel processing. After introducing to the problematics, the thesis focuses on the practical use of these mechanisms in the translation controlled syntax, and therefore the second part of the thesis deals with the implementation of a dynamic syntactic analyzer that uses more grammars during the analysis. With respect to the greatest user friendliness and the possible didactic use, the application is implemented using modern web technologies HTML5, JavaScript, AngularJS, CSS3, LESS and more.

Práca sa zaoberá automatizáciou testovania technickej dokumentácie napísanej v značkovacom jazyku AsciiDoc pomocou open-source frameworku testovania technickej dokumentácie Emender implementovaného na CI/CD platforme. Framework bol rozšírený o webovú aplikáciu emenderwebservice s REST API, ktorá poskytuje užívateľské grafické rozhranie s výsledkami testov a mechanizmom na odrieknutie falošne pozitívnych výsledkov testov. Webová aplikácia bola vytvorená pomocou WSGI frameworku na tvorbu webových aplikácií Flask s databázou ktorá umožňuje agregáciu výsledkov testov a ich unikátnu identifikáciu. Aplikácia uľahčuje prístup ku výsledkom testov vygenerovaných frameworkom Emender v CI/CD systémoch a poskytuje technical writer-om ucelené užívateľské prostredie.

The aim of my diploma thesis was to explore the influence of manganese ions put into nickel nitrate structure. The attention was focused mainly on the stabilization of nickel nitrate a modification, which could not change into b modification. The theoretical part of my thesis focused on applied materials, kinds of acumulators, basic parameters of acumulators and the description of chosen methods of measurement employed. It contained the electrodeposition, the impedance spectroscopy and the cyclic voltammetry. The task of the experimental part was to measure the effect of manganese ions put into potassium hydroxide structure. Proportions of Ni (nickel nitrate) : Mn (manganese nitrate) 10:0, 7:3, 5:5, 6:1 and 6:4 were blended for the measurement. By means of the electrodeposition, there was a thin layer of nickel hydroxide with an admixture of manganese ions from nickel nitrate and manganese nitrate dilution put on the nickel plate. After the spread of the thin layer on the nickel plate, the measurement by the method of cyclic voltammetry followed. The next task consisted in trying to add KOH (potassium hydroxide) anionic and cationic surfactant into the dilution.

This masters's thesis contains description of designed and implemented tool for classification of plant microRNA without genome. Properties of mature and star sequences in microRNA duplexes are used. Implemented method is based on clustering of RNA sequences (with CD-HIT) to mainly reduce their count. Selected representants from each clusters are classified using support vector machine. Performance of classification is more than 96% (based on cross-validation method using the training data).

MAAS / Department of Music

Das Campusnetz - neue Strukturen und Funktionen Neues vom WWW-Server Umstellung der HOME-Verzeichnisse vom NFS ins AFS AFS löst NFS ab! Neue Rechnersysteme - zur allgemeinen Nutzung Superskalarrechner - Inbetriebnahme und Nutzungsmöglichkeiten PC-Integration via SAMBA-Server CD-ROM im Netz Die Programmpakete MATHEMATICA und ANSYS Ueberblick ueber /uni/global-Software Ein weihnachtliches Problem?

Der neue PC-Pool Rhstr. Windows 95 kontra NT 4.0 Administrationsdienst fuer Windows NT-Workstations DQS: Batchsystem fuer den Parsytec Parallelrechner File- und Archivserver Mailing-Listen mit Majordomo Campusnetzzugang ueber das oeffentliche Telefonnetz Brennen von CD's im Batchbetrieb Software-Handbuecher

Inhalt: Neuregelungen zur Inanspruchnahme kostenpflichtiger URZ-Dienste; Administrationsdienst für Windows NT und RedHat Linux; Aufbau eines Linux-Clusters am Institut für Physik; Neue AFS-Version verfügbar; Neues von MONARCH; Recherchieren von Datenbanken im Uni-Netz; ¨Zertifikat Internet-Nutzung¨ der TU Chemnitz

Inhalt: Jahresrückblick 2001 Der Computer und das Euro-Zeichen Software-News 4. Chemnitzer Linux-Tag - Vortragsprogramm