The diploma thesis deals with measurement of the interior of a parish building and its close surroundings in Čučice. Necessary steps for creating the thematic map and the building documentation are described in this thesis. First the preparatory work was made, which means that ground reconnaissance was made and required equipment and tools were chosen. In the next part the measurements, which include the construction of an auxiliary measuring network, the measurement of the detailed and control points, are described. After the measurement work, the office work followed, the coordinates and the heights of the auxiliary and detailed points were specified. The accuracy of the map according to ČSN 01 3410 was tested. Finally a thematic map in scale 1: 500 and the building drawings in scale 1:50: 1st floor plan, 2nd floor plan, longitudinal and cross-section were created.

The content of this master’s thesis deals with competitiveness of the accommodation establishment „Jacob Brno“ through its brand. The current situation of the company is dismantled according to theoretical knowledge. Based on the value chain theory, the value creation process for the customer is further dismantled and compared to competing company. According to the variety of analyses, it is proposed to extend the supply of the accommodation establishment to ancillary services. This includes services such as a conference facility or an improved way to accommodate guests.

In this thesis is elaborated analysis of auxiliary gear box, which is part of the support structure TATRA truck. Target of this work is to determine the size of the forces in the gearing, bearings and perform Strain Stress analysis of load is in excess of two states. The first load is in excess status will only react to the load forces from gearing. The second load is in excess status is designed for load bearing structure forces from these values were provided by TATRA a.s..

I denna rapport utreds problem med spänningsfall i hjälpkraften på olika sträckor i Sverige. Hjälpkraften förser el, tele och signalsystemen med ström. Spänningsnivån kan vara 22 kV trefas eller 11 kV tre eller tvåfassystem. Rapportens utgångspunkt är STRI’s utredning om hjälpkraft där en schablonmetod har framställts. Den metoden har jämförts med simuleringsresultat ur µPAS. De sträckor som rapporten omfattar är trefas med den nominella spänningen 11 kV, 50 Hz. Sträckorna har modellerats och simulerats i µPAS. Vidare har enkla analytiska metoder används, där hela lasten antogs ligga  i slutet på linjen. Resultaten från den analytiska modellen har sedan jämförts med de simulerade. Utifrån detta har två alternativa lösningar tagits fram: att höja den nominala spänningen till 22 kV eller ändra placeringen på inmatningspunkterna vid långmatning. För ett indikativt resultat kunde schablonmetoden användas, för en mer precis undersökning var  µPAS ett bättre alternativ. Slutsatsen är att alla undersökta och normalmatade sträckor för 11 kV klarar spänningskraven på ± 10 % av nominalspänning. Problem uppkommer vid långmatning och då 11 kV inte upprätthålls från omformarstation. / This report will investigate troubles with voltage drop in the auxiliary power system on different routes in the Swedish railway. The auxiliary power system provides the electrical, telecom and signalling systems with power. The voltage level can be 22 kV three phase or 11 kV three or two phase. The report is based on an investigation from STRI where a standardised approach has been developed. The routes included in the report are three phase and has the rated voltage of 11 kV, 50 Hz. The routes have been modulated and simulated in µPAS. To verify the results from the simulations calculations have been made separately. From the results two alternative solutions has been presented. Raise the voltage to 22 kV or change the position of the feeder for long feed. The aim was to lower the voltage drop for each of the solutions. For a quick control the standardised approach can be used. To get more accurate values µPAS is the better alternative.   One conclusion was that all examined routes with 11 kV and are normal fed fulfil the demands of ± 10 % of rated voltage. Issues appear when a route is long fed and if the voltage from a frequency converter drops below 11 kV.

Das Archiv für Epigraphik ist eine Fachzeitschrift für die Erforschung von Inschriften der Vormoderne mit einem thematischen Schwerpunkt im Mittelalter und der Frühen Neuzeit.

1 Selected issues of legal regulation of genetically modified organisms Abstract Genetically modified organisms are one of the most pressing challenges of modern agriculture and other economic sectors. This is due to the large number of potential benefits and risks, which are quite often insufficiently scientifically researched, exacerbating the controversy associated with their use. It is a technology that has been used for a relatively long time, but its legal regulation is constantly challenged due to the dynamic development of the related scientific advances. Despite the aforementioned, some issues of the topic receive only marginal attention, which makes it difficult to create and apply a fully functioning legal regulation. The diploma thesis itself deals with selected issues of legal regulation of genetically modified organisms, focusing on the readiness of legal regulation, functionality of auxiliary instruments, as well as de lege ferenda considerations. These topics are formulated into three basic research questions, which the author tries to answer by analyzing relevant parts of the legal regulation. The aim of this thesis is to expand this vital part of environmental law with new findings and thus supplement other academic works that deal with legal regulation of genetically modified organisms....

Medical doctors understaffing is becoming a compelling problem in many healthcare systems. This problem can be alleviated by utilising Computer-Aided Diagnosis (CAD) systems to substitute doctors in different tasks, for instance, histopa-thological image classification. The recent surge of deep learning has allowed CAD systems to perform this task at a very competitive performance. However, a major challenge with this task is the need to periodically update the models with new data and/or new classes or diseases. These periodical updates will result in catastrophic forgetting, as Convolutional Neural Networks typically requires the entire data set beforehand and tend to lose knowledge about old data when trained on new data. Incremental learning methods were proposed to alleviate this problem with deep learning. In this thesis, two incremental learning methods, Learning without Forgetting (LwF) and a generative rehearsal-based method, are investigated. They are evaluated on two criteria: The first, capability of incrementally adding new classes to a pre-trained model, and the second is the ability to update the current model with an new unbalanced data set. Experiments shows that LwF does not retain knowledge properly for the two cases. Further experiments are needed to draw any definite conclusions, for instance using another training approach for the classes and try different combinations of losses. On the other hand, the generative rehearsal-based method tends to work for one class, showing a good potential to work if better quality images were generated. Additional experiments are also required in order to investigating new architectures and approaches for a more stable training.

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It is anticipated that massive amounts of energy will be transferred long distances via High-Voltage Direct Current (HVDC) links in the future and the prospect of having meshed HVDC grids is envisioned, for example the European super grid. Such a power system would benefit greatly if HVDC circuit breakers could reliably clear faults within the HVDC network. Different ways to break large direct currents have been proposed throughout the years and one distinguished concept is based on generating an artificial zero-crossing of the current and pass it through a mechanical interrupter as it opens. This concept is implemented in the Voltage-Source Converter Assisted Resonant Current (VARC) circuit breakers developed at Scibreak which require auxiliary power from an off-line supply unit to energize their electronic equipment. This thesis continuous and builds on research previously carried out at Scibreak on a special Auxiliary Power Supply (APS) concept for 525 kV HVDC applications. In essence, it is a unique modularized high-frequency transformer whose power transfer and voltage withstand capabilities are the cornerstones of its design. The APS must supply an adequate amount of power to drive the VARC circuit breakers with preferably high efficiency while also fulfilling the considerable insulation demands of HVDC grids. A feasibility study of this APS concept was carried out by building a parametric 3D model in the Finite Element Analysis (FEA) software Ansys Maxwell which includes all parts that affect both its magnetic and electrical properties. The initial model reproduced experimental results from a magnetic APS prototype and was then used to explore a plethora of different geometries and materials with regards to its magnetic and dielectric designs. Specific design candidates were selected for more in-depth analysis and experimental work. All obtained results together with knowledge of commercially available materials show that the APS holds great promise to meet the necessary design criteria for its HVDC applications. Its dielectric design is well suited to continuously handle an operating voltage of 525 kV DC, meet the required impulse voltage levels of the grid and properly shield the magnetic structure. It is expected to have a long life time where the design criterion was always 30 years in this work. Moreover, its magnetic design is anticipated to supply a few kW of active power with efficiencies between 80 to 95 percent and manage a continuous operating time of 5 min. Both design aspects are interchangeable to a decent extent in order to cope with one another and produce a compromised design. / Det förväntas att enorma mängder energi kommer överföras långa sträckor med Högspänd Likström (HVDC) i framtiden och blivande HVDC-nät håller på att föreställas, till exempel det europeiska superelnätet. Ett sådant kraftsystem skulle ha stor nytta av HVDC-brytare som tillförlitligt kan bryta felströmmar inom HVDC-nätet. Olika sätt att bryta stora likströmmar har föreslagits med åren och ett distinkt koncept bygger på att generera en artificiell nollgenomgång av strömmen och föra den genom en mekanisk brytarkammare när den öppnas. Detta koncept är implementerat i de så kallade VARC-strömbrytarna som utvecklas hos Scibreak, vilka kräver hjälpmatning av effekt från en extern försörjningsenhet för att driva deras elektroniska utrustning. Denna avhandling fortsätter och bygger vidare på forskning som tidigare utförts hos Scibreak på ett speciellt Hjälpmatningskoncept (APS) för 525 kV HVDC-tillämpningar. I huvudsak är det en unik modulariserad högfrekvenstransformator vars kraftöverföring och spänningståligheter är huvudfokusen i dess design. Hjälpmatningen måste kunna leverera en tillräcklig mängd effekt för att driva VARC-brytarna med företrädesvis hög verkningsgrad, samtidigt som den ska uppfylla de betydande isolationskraven för HVDC-nät. En genomförbarhetsstudie av detta APS-koncept gjordes genom att bygga en parametrisk 3D modell i Finita Elementmetodsprogramvaran (FEM) Ansys Maxwell som inkluderar alla delar som påverkar både dess magnetiska och elektriska egenskaper. Den initiala modellen reproducerade experimentella resultat från en magnetisk APS-prototyp och användes sedan för att utforska en uppsjö av olika geometrier och material med avseende på dess magnetiska och dielektriska konstruktioner. Specifika designkandidater valdes ut för mer djupgående analys och experimentiellt arbete. Alla erhållna resultat tillsammans med kunskap om kommersiellt tillgängliga material visar att APS:n har stora möjligheter att uppfylla alla nödvändiga kriterier för sina HVDC-tillämpningar. Dess dielektriska design är väl lämpad för att kontinuerligt hantera en driftspänning på 525 kV DC, möta de erforderliga stötspänningståligheterna i nätet och ordentligt skydda den magnetiska strukturen. Den förväntas ha en lång livstid där designkriteriet alltid var 30 år i detta arbete. Dessutom förväntas dess magnetiska design leverera några kW aktiv effekt med verkningsgrader mellan 80 till 95 procent och klara en kontinuerlig drifttid på 5 min. Båda designaspekterna kan justeras i en någorlunda utsträckning för möta de krav som ställs från varandra och producera en kompromissad design.

Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. Truck manufacturers are working to develop equipment using auxiliary power units to supply the trucks with electricity, which operate independently of the main engine. Fuel cell-based auxiliary power units could offer high efficiencies and low noise and vibrations. The hydrogen required for the fuel cell can be generated in an onboard fuel reformer. This thesis is devoted to hydrogen generation from dimethyl ether, DME, by autothermal reforming focusing on the application of fuel cell auxiliary power units. In the search for alternative fuels, DME has lately been identified as a promising diesel substitute. The first part of the thesis gives an introduction to the field of DME reforming with a literature survey of recent studies within the area. Included are also results from thermodynamic equilibrium calculations. In the following parts of the thesis, experimental studies on autothermal reforming of DME are presented. A reformer constructed to generate hydrogen to feed a 5 kWe polymer electrolyte fuel cell is evaluated with emphasis on trying to work close to a practically viable process, i.e. without external heating and using gas mixtures resembling real conditions. Additional experiments have been conducted to investigate the use of catalytic oxidation of dimethyl ether as a heat source during startup. The results of these studies are presented in Paper I. In the second experimental study of this thesis, which is presented in Paper II, Pd-based monolithic catalysts are evaluated at small scale for use in autothermal reforming of DME. A screening of various catalyst materials has been performed followed by a study of the influence on the product composition of varying operating parameters such as oxygen-to-DME ratio, steam-to-DME ratio, and temperature. / QC 20101115