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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
471

Variantní řešení křižovatky u obce Přestanov / Design of Crossroad Near Přestanov

Nitková, Jana January 2015 (has links)
The main objective of the thesis is to design a roundabout in the depth of anurbanistic study. The concerned crossroad is found in a village of Prestanov where the roads I/13 and II/253 intersecting. The goal of a supposed reconstruction is to change the traffic scheme of the current crossroad to design a roundabout. The change would provide the traffic flow going from the minor road II/253 with free-flowing traffic and better safety issues. Three new versions of the crossroad were designed. The spiral type roundabout is pursued further to the final design. The drawings and the technical report are also included. On top of that, the thesis contains an engineering geology survey and a road capacity assessment.
472

Vyhrnovací dopravník kalového sila / Sediment conveyor

Fučík, Petr January 2008 (has links)
The subject of this diploma thesis is engineering design of the sediment conveyer. Conveyer is instrumental to total emptying of sediment silo that is situated in a sewage treatment plant. Proposed construction has to fulfill the specified functional requirements and parameters. Parts of solution are also necessary analytical and FEM calculations.
473

Modifikace utěsnění průlezu kompenzátoru objemu VVER 1000 / The flange gasket modification of VVER 1000 pressurizer manhole

Švaříček, Tomáš January 2011 (has links)
The main purpose of this thesis is the modification of the original flange gasket of the VVER1000 pressurizer manhole. Then the construction and function of the pressurizer itself is described, together with detailed calculations of the original and new modified gasket to meet the ČSN EN 1591 standard together with a description of the legislation that has to be followed in the calculations. The comparisons of both gasket types together with main conclusions are placed in the last section of this thesis.
474

Měření napjatosti ve spirále vodní turbíny pomocí tenzometrů / Measurements of the stress in the turbine spiral casing using the strain gauges

Dokoupil, Pavel January 2014 (has links)
The Master‘s thesis is focused on measuring of the stress in the spiral case of water turbine using the strain gauges measurement. It contains the theoretical and the practical part. The theoretical part includes a description of theoretical background (basic mechanics, measurement and evaluation, strain gauges, pressure measurement, uncertainty of measurement). One of the chapters describes Water Power Plant Lipno nad Vltavou (history of power plant, issues and the history of measurement). The practical part contains a theoretical calculation of measurement uncertainty and measuring of stress on spiral case Francis turbine at Water Power Plant Lipno I (Unit TG2). Measurement was made before and after overhaul. There are described technical data of spiral cases, description of measurement, results of measuring of strain and stress including comparison with the pressure in spiral case and calculation of uncertainties of measurement.
475

Návrh odstředivého čerpadla metodami diferenciální geometrie / Design of Centrifugal Pump Using Differential Geometry Methods

Sloupenský, Zdeněk January 2011 (has links)
This thesis deals with a new approach to the design of impeller, blade and spiral of centrifugal pump. The mathematic model of flow inside meridional section of impeller and spiral is based on the instruments of differential geometry applied to Bezier surfaces. This formerly introduced theory is more deeply developed in this thesis and the conclusions are applied to the design of centrifugal pump parts working with fluid. The main thesis output is the mathematic model and on its principles created software determined for the design of impeller, blade and spiral. The received results are exportable into one of the commonly used 3D modeling programs.
476

Correlation and Spiral Microscopy using a Spatial Light Modulation / Correlation and Spiral Microscopy using a Spatial Light Modulation

Bouchal, Petr January 2016 (has links)
Dizertační práce je uceleným shrnutím výsledků dosažených v průběhu doktorského studia. V úvodní části práce je představena motivace, odborné a technické zázemí a grantová podpora realizovaného výzkumu. Popsány jsou také dosažené výsledky a jejich význam pro skupinu Experimentální biofotoniky, Ústavu fyzikálního inženýrství, Vysokého učení technického v Brně. Vědecká část práce je rozdělena do dvou hlavních bloků, které se postupně zabývají návrhem nových zobrazovacích koncepcí a technickou modifikací stávajících zobrazovacích systému v praktických aplikacích. Dosažené vědecké výsledky podporují vývoj v oblastech korelační a spirální mikroskopie s prostorovou modulací světla. V části zabývající se návrhem nových zobrazovacích koncepcí je provedena studie korelačního zobrazení v podmínkách proměnné časové a prostorové koherence. Následně jsou zkoumány možnosti praktického využití vírových a nedifrakčních svazků v oblastech korelační, holografické a optické mikroskopie. Interference vírových svazků a samozobrazení nedifrakčních svazků je postupně využito k dosažení 3D zobrazení s hranovým kontrastem a rotující bodovou rozptylovou funkcí. Pokročilé zobrazovací metody jsou úspěšně zavedeny optickou cestou ale i digitální modifikací holografických záznamů. Výsledky teoretických modelů a numerických simulací jsou doprovázeny praktickým vyhodnocením navržených zobrazovacích principů. V technicky zaměřené části jsou navrženy nové způsoby zavedení prostorové modulace světla, které umožňují rozšíření zorného pole v experimentech korelačního zobrazení a dosažení achromatizace při zobrazení pomocí programovatelných difraktivních prvků. Rozšíření zorného pole v korelačních experimentech umožňuje přizpůsobovací optický systém vložený do standardní zobrazovací sestavy. Achromatizace difraktivního zobrazení je zajištěna použitím speciálně navrženého refraktivního korektoru. V navazující části je navržena nová metoda krokování fáze, která pracuje s dvojlomností kapalných krystalů využívaných v systémech pro prostorovou modulaci světla. Použití metody je experimentálně demonstrováno v polarizačně modifikovaném Mirau interferometru. Získané technické zkušenosti jsou využity v praktickém návrhu a realizaci multimodálního zobrazovacího systému s prostorovou modulací světla.
477

Umělé světlo v umění / Artificial Light in Art

Víchová, Ilona January 2020 (has links)
In my dissertation I focus on light and spatial situations rooted in a dialogue between an empty space and artificial light. These environments are so charged in terms of perception that their experience affects the processes in the viewer's consciousness. First, there are usually the feelings of increased instability and disorientation. These factors were first explored in depth by the Californian artists James Turrell and Robert Irwin in the mid-1960s, in response to psychological and neurological scientific experiments in the field of sensory deprivation. Turrell's and Irwin's progressive approach found a host of followers. In Europe, it was developed, in particular, by the contemporary artists Olafur Eliasson and Ann Veronica Janssens, in the Czech milieu by Pavel Korbička. Korbička's interest in the potential of space and its definition by artificial light constitutes a key material in my dissertation for the explanation of the links between light and spatial works and the processes regarding the viewer's perception. Inside light and spatial works, the limits of the viewer's body dissolve; at the same time, the natural dependence of human orientation on allocentric representation (i.e. on the relationship between the subject and the surrounding landmarks) is stimulated, to the extent that the...
478

Inspektionsmetoder för inre vattenvägar i vattenkraftverk / Inspection methods for internal waterways in hydropower plants

Sundberg, Sebastian, Amsköld, Tobias January 2015 (has links)
Den svenska vattenkraften står för nästan 50 % av landets elproduktion vilket gör dess konstruktioner till en viktig del av samhällets infrastruktur. För att ett vattenkraftverk ska fungera effektivt och säkert ställs höga krav på komponenternas funktion och kondition. I dagsläget genomförs därför rutinmässiga kontroller på, i och runt dessa anläggningar. För de aggregatnära inre vattenvägarna genomförs detta ca vart åttonde år i samband med reparationer av turbinerna, vilka då måste tömmas på vatten. För till- och utloppstunnlarna, som ofta är drivna i berg, finns det dock inte några sådana rutiner. Detta i kombination med att majoriteten av Sveriges vattenkraftverk har uppnått en ålder på över 50 år gör att branschen har börjat bli intresserade av att få kännedom om skicket på tunnlarna. Att genom-föra inspektioner genom att torrlägga dessa är dock en tidsödande process som kräver att kraftverket är avstängt under en lång tid och därmed ger en stor ekonomisk förlust för ägaren. Detta arbete har därför utförts med syfte att utvärdera till vilken grad inspektioner med undervattensfarkoster, ROV, kan användas som alternativ till inspektioner av inre vatten-vägar, både aggregatnära och i till- och utloppstunnlarna. En litteraturstudie har genomförts, om vattenkraftverk, vanliga skador, dagens inspektionsmetoder samt hur en ROV är uppbyggd och fungerar. Arbetet innefattar även tre praktiska moment bestående av deltagande på en inspektion av torrlagda aggregatnära inre vattenvägar och en inspektion med ROV i en 2,5 km lång utloppstunnel samt egna försök med inhyrd ROV för att undersöka vilka typer av betongskador som är möjliga att detektera. Resultatet från samtliga delar i arbetet pekar på att besiktningar med ROV kan övervägas för flera olika typer av inspektioner. För till- och utloppstunnlar är denna typ av inspektion många gånger den enda rimliga. För de aggregatnära inre vattenvägarna ger dagens inspektionsmetoder med torrläggning ett fullgott resultat, men ROV skulle kunna vara ett alternativ vid svårtillgängliga delar, t.ex. på grund av utformning eller stora läckage. / Swedish hydro power accounts for nearly 50 % of the country's electricity production which makes the constructions within this production system an important part of the societal infrastructure. To ensure safe and efficient operation of these hydroelectric power plants high demands are put on the components function and condition. Therefore, routine inspections are carried out inside and around these facilities. For the waterways directly connected to the power station, such as penstocks, wicket gates and draft tubes, these checkups are made about every eight years simultaneously as planned repairs of the turbine, when the waterways have to be emptied. For the head and trail race tunnels, which often are driven in bedrock, there are no such routines. This, in combination with the fact that the majority of the Swedish hydroelectric plants have attained the age of over 50 years, has led to an increased interest within the industry in ways to increase their knowledge about the condition of these water passageways. To conduct inspections by draining the tunnels is however a very time consuming process that requires the power plant to be turned off for a long time causing a major financial loss for the owner. The purpose of this master thesis is to assess the extent to which inspections with remotely operated vehicles, ROV, can be used as an alternative method for inspections of covered waterways, both those close to the power house and the head and tail race tunnels. A literature study of hydro power plants, common damages, current inspection methods and the construction and function of an ROV, has been conducted. The method also includes three practical activities, participation at inspections in drained waterways and at an ROV inspection of a 2.5 km tail race tunnel. Furthermore, tests with a rented ROV were carried out to investigate what type of concrete damages that are possible to detect using this method. The result from all parts in this thesis indicates that examinations by ROV can be considered for several types of inspections. For head and tail race tunnels, this type of inspection is often the only reasonable method. For the waterways directly connected to the power station, current inspection methods by draining show good result. But the ROV could here be an alternative in inaccessible areas, for instance due to waterway design or heavy leakage for instance.
479

Mind the Gap: An Integration of Art and Science in Music Theory Pedagogy

Penny, Lori Lynn 22 April 2021 (has links)
My inquiry, centered on the applied practice of teaching, confronts the detachment that often disassociates the intellectual study of music theory from the physical experience of music. This pedagogical detachment, perceived as a split between opposing views of knowledge, privileges positivist science over interpretive art (Aróstegui, 2003), producing written competencies that have little or no musical meaning (Rogers, 2004). Endeavouring to re-attach music theory and the music it was initially intended to explain (Dirié, 2014), I constructed four Listening Guides to align with the intermediate-level theory curriculum of the Royal Conservatory of Music. Their construction incorporates elements of design research along with an underlying framework derived from the Kodály Method’s four-step instructional process. Given my multi-faceted personal/professional interactions with music theory, my research project is presented in the form of a quest narrative that weaves together my story and the stories of participant teachers who established the Listening Guides’ potential usefulness through reviewing and implementing interactions. This narrative, as a creative representation of arts-based research practices (Leavy, 2015), is derived from the blurring of specific cognitive findings and less definable aesthetic knowings (Greenwood, 2012). My data, both the prototypical data I designed and the empirical data I collected from focus group discussions with my participants, are filtered through an a/r/tographic lens that acknowledges the coexistence of my artist/researcher/teacher identities. The analysis of our aggregate narrative, as an exploration of music theory pedagogy with, about, in, and through music, relies on the evaluative tools of educational criticism (Eisner, 1991). Unfolding in a mostly linear climb, my quest for a fully integrated music/theory (art/science) pedagogy reaches its apex in the understanding that a music-logic organization confounds the subject-logic of traditional teaching approaches. Thus, my inquiry challenges the customary practices of scientific knowledge-building with a model for artistic “ways-of-knowing” in music theory pedagogy.
480

Simulace tepelně-aktivovaných základových konstrukcí budov / Simulation of thermally activated foundation structures of buildings

Sliva, Matěj Unknown Date (has links)
Diploma thesis deals with geothermal foundations. The aim of the thesis is to find optimal way of pipe winding for heat-carrying liquid in foundation piles. The problem is solved by CFD simulations in ANSYS Fluent. Determinative parameters like the pressure loss, heat fluxes and U-value in one pile circuit with two ways of pipe installations – Single coil, where reverse pipe is led in the middle of pile and Duplex Coil with reverse pipe in spiral shape are observed.

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