Dissertations / Theses on the topic 'Open Window'
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Bingham, Christie. "Through an Open Window." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc799530/.
Full textClark, Regina Ann. ""The Brownies' Book": An Open Window to Early Twentieth-Century African American Childhood." W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539626582.
Full textAnan, Tetsu. "Open a New Window of Plasma Diagnostics in the Solar Physics with Spectropolarimetric Observation." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/189335.
Full textAndreu, Vázquez Cristina. "Embryo Reduction: An Open Window to Decreasing the Twinning Rate in High-Producing Dairy Cattle." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/96358.
Full textLas gestaciones gemelares tienen un impacto negativo sobre la economía de las explotaciones de vacuno lechero por su elevado riesgo de aborto y el efecto del parto gemelar sobre la eficiencia reproductiva postparto de la vaca. La reducción embrionaria brinda la oportunidad de transformar una gestación múltiple en una simple y se presenta como una herramienta para disminuir la creciente tasa de partos gestaciones y sus efectos negativos. El principal objetivo de esta tesis fue desarrollar y evaluar los beneficios y riesgos potenciales de la reducción embrionaria en vacas de alta producción. Se estudiaron además los factores que afectan a la incidencia de gestaciones gemelares y los efectos de los partos de gemelos sobre la vida productiva de la vaca. Los cuatro estudios experimentales y epidemiológicos incluidos en esta tesis han sido publicados o están sometidos a revisión para su publicación en revistas científicas. En el primer estudio se analizaron los factores de manejo y especialmente de los diferentes protocolos de sincronización de celo empleados sobre la incidencia de gestaciones gemelares. La tasa de gestaciones gemelares sobre un total de 2015 gestaciones fue del 17.9% y la incidencia se vio significativamente afectada por factores individuales (número de lactación y gemelos en el parto previo), factores ambientales (fotoperiodo y estación) y por el protocolo de sincronización aplicado antes de la inseminación. En el secundo estudio se recogieron los historiales reproductivos completos de 4861 vacas lecheras de alta producción con un total de 12587 partos con el objetivo de determinar los efectos del parto gemelar sobre la eficiencia reproductiva postparto y la vida productiva de las vacas. La tasa de partos gemelares durante los 11 años de estudio fue del 5.6% y el 9.8% de las vacas parieron gemelos al menos en una ocasión a lo largo de sus vidas. Las vacas con partos gemelares presentaron, además de una menor tasa de concepción y un mayor riesgo de ser eliminadas durante la siguiente lactación, un mayor riesgo de aborto y una menor vida productiva que las vacas con un único ternero al parto. El tercer estudio evaluó el efecto de la reducción embrionaria mediante la ruptura manual del amnios de uno de los embriones en gestaciones gemelares unilaterales y bilaterales sobre el mantenimiento de la gestación. El riesgo de pérdida de la gestación fue similar para el grupo de vacas con gestación unilateral tratadas y control mientras que la reducción embrionaria incrementó el riesgo de pierda de la gestación en las vacas con gestaciones bilaterales. En el último estudio se compararon las tasas de mantenimiento de la gestación tras reducir gestaciones múltiples mediante la ruptura manual del amnios o mediante aspiración transvaginal del fluido fetal guiado por ecografía. El riesgo de pérdida de la gestación fue similar para ambos métodos de reducción.
Twin pregnancy is an increasing and current topic of the high-producing dairy herds due to the economic losses caused by their great risk of pregnancy failure and the detrimental effects of twinning on the postpartum reproductive efficiency. Transforming a multiple pregnancy into a singleton pregnancy by inducing embryo reduction may circumvent those problems. Therefore, the main aim of this thesis was to develop and evaluate the potential risks and benefits of embryo reduction in dairy cattle as a therapeutic strategy addressed to prevent cows from delivering twins and to reduce the twinning rate in high-producing dairy herds. In order to offer a holistic perspective on the problem of twins and to determine its magnitude, we also studied the factors that affect the incidence of twin pregnancies and the effects of twinning on the productive lifespan of the cows. Research included in this thesis was divided in four studies published or submitted for publication in peer-reviewed journals. The first study addressed potential management risk factors affecting the incidence of twin pregnancies in high-producing dairy cows. Special attention was paid to the estrus synchronization protocol used before the AI resulting in pregnancy. Twin pregnancy was recorded in the 17.9% of the 2015 pregnancy diagnoses, and the incidence was affected by cow factors (lactation number and previous twining), environmental factors (photoperiod and season) and management related to synchronization protocols. The second study analyzed data from complete reproductive records for 4861 high milk-producing dairy cows including 12587 calving events to determine the effects of twinning on the subsequent reproductive performance and productive lifespan of the cows. The twinning rate was 5.6%, and 9.8% of the cows delivered twins at least once during their life. Cows delivering twins, besides being less likely to conceive and more likely to be culled in the subsequent lactation, also carry a higher risk of abortion on the subsequent lactation and show a reduced mean productive lifespan. In the third study we evaluated the effect on pregnancy maintenance of embryo reduction by manual amnion rupture in unilateral and bilateral twin pregnant cows. Embryo reduction by manual amnion rupture did not carry an additional risk of pregnancy loss for unilateral twin pregnancies, whereas the treatment increased the risk of pregnancy failure in bilateral twin pregnancies. The last study compared the effect on pregnancy maintenance of two embryo reduction techniques, Manual Rupture (MR) and Transvaginal Ultrasound Guided Aspiration (TUGA) of allanto-amniotic fluid in dairy cows with multiple pregnancies. No effect was detected on pregnancy maintenance of the technique used.
Björk, Viktor, and Oscar Lundberg. "Det ospecifika immunsystemets svar på måttlig fysisk aktivitet : En randomiserad tvärsnittsstudie med avsikt att undersöka ”open window”-fenomenet hos friska seniorer." Thesis, Linnéuniversitetet, Institutionen för idrottsvetenskap (ID), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-74311.
Full textArroyo, Delgado Eliott. "Comparison of the Leukocyte Response to Interval Exercise versus Continuous Exercise." Kent State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1616695984469633.
Full textZolfaghari, Zahra. "Study of the Effect of Light Emitting Diode (LED) on the Optimum Window-to-Wall Ratio and Whole-Building Energy Consumption in Open Offices." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/100642.
Full textMaster of Architecture
Harnessing daylight with the use of windows helps to offset parts of the electric lighting needs, and decrease the total building energy consumption. This is accomplished by using glazed materials to admit daylight and lighting control systems, which can respond to the dynamic light level. However, improper implementation of a passive daylighting strategy may cause increased energy consumption. Sunlight is accompanied by solar heat radiation which can increase the HVAC load of a space and compromise the energy savings achieved by daylighting. Therefore, a balance between solar heat and light gain is required to fully take advantage of solar energy without reverse impacts. Concerning the mentioned balance, recent advancements in lighting technology question the effectiveness of natural light in reducing whole-building energy consumption. Due to the high energy efficiency of LED luminaires, lighting power consumption is rather low, even when the lighting system operates at full capacity. Therefore, it is unclear whether the solar energy coming through glazed materials works to the advantage or disadvantage of total building energy consumption. This study hypothesized that the total energy consumption of an open office with LED luminaires would be less in absence of solar energy compared to a scenario which utilizes the solar energy. A simulation-based methodology, using a combination of photometric computation and building energy simulation tools, was utilized to examine the hypothesis and explore the impacts of lighting systems on the optimum window-to-wall ratio. The results provide a helpful guideline which highlights the impact of lighting systems on window dimensions and their mutual effect on whole-building energy consumption. Although the optimum window-to-wall ratios suggested by this study only concern energy consumption, integration of them with occupants' preferences can propose an acceptable window-to-wall ratio that satisfies both design quality and performance of a building.
Chen, Jianhao. "Investigation of CdS Nanowires and Planar Films for Enhanced Performance as Window Layers in CdS-CdTe Solar Cell Devices." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/27.
Full textBaldwin, Jeffrey W. Jr. "Determination of a Two-Week `Window’ for PCB Influence on Ultrasonic Vocalization and Other Behavioral Measures in Young Sprague-Dawley Rats." Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1404686457.
Full textStenbro-Olsen, Peter. "Studies on the microbial ecology of open windrow composting." Thesis, Abertay University, 1998. https://rke.abertay.ac.uk/en/studentTheses/5b944936-f6e9-4075-8d16-288248d3f69c.
Full textIrvine, Richard John. "Temperature and physical modelling studies of open windrow composting." Thesis, Abertay University, 2002. https://rke.abertay.ac.uk/en/studentTheses/bd4b95a9-3587-41ab-b3de-60628fe5f63b.
Full textKatsanis, Stylianos. "Numerical modelling of wind borne pollution dispersion from open windrow compost sites." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/5558/.
Full textDouglas, Philippa. "Bioaerosol emissions from open windrow composting facilities : emission characterisation and dispersion modelling improvements." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/8061.
Full textHemberger, Glen J. "Selected Songs for Chamber Winds and Soprano: Rediscovering a Forgotten Repertoire of John Philip Sousa." Thesis, connect to online resource. Access restricted to the University of North Texas campus, 2001. http://www.library.unt.edu/theses/open/20013/hemberger%5Fglen/index.htm.
Full textIncludes 8 concert and recital programs (1997-2001). Accompanied by recital, recorded Sept. 6, 2001. Includes bibliographical references (p. 100-107).
Černý, Jan. "Automatizované ověřování konfigurace operačního systému MS Windows pomocí projektu OpenSCAP." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385898.
Full textGohar, Adnan. "Analyzing Service Oriented Architecture (SOA) in Open Source Products." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10770.
Full textFryer, Cheryl A. "An annotated bibliography of selected chamber music for saxophone, winds and percussion with analyses of Danses exotiques by Jean Françaix and Nonet by Fisher Tull /." connect to online resource, 2003. http://www.library.unt.edu/theses/open/20033/fryer%5Fcheryl/index.htm.
Full textDomínguez, Gómez María Jesús. "Efectos de la materia prima y el proceso secado-maduración sobre la calidad del jamón curado." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/160042.
Full text[CA] La matèria primera és un element clau en qualsevol procés de transformació alimentària, ja que de la seua composició i qualitats dependrà el producte final. En el cas del pernil, l'origen de la matèria primera, pot procedir de sistemes ramaders convencionals, on la producció és intensiva i l'alimentació està basada en pinsos comercials. En el cas de porcs procedents de ramaderia ecològica, els animals estan subjectes a les condicions marcades per la normativa europea de producció ecològica, on es respecta el medi ambient i el benestar animal. Per al cas de figures de qualitat, les explotacions ramaderes també han de complir els requisits indicats en els plecs de condicions. Un altre element que defineix al pernil curat és el procés d'elaboració, que s'inicia amb la salaó, amb o sense sals nítriques. El temps de l'assecatge-maduració on la duració, el sistema d'assecatge (natural o amb finestra oberta versus cambra amb condicions controlades) i la temperatura són elements clau en el desenvolupament de les qualitats organolèptiques. El principal objectiu del present estudi és aportar resultats sobre l'evolució en la composició de la carn, al llarg del procés d'assecatge-maduració, en l'elaboració de pernil curat, tenint com a variables de l'estudi, la procedència del pernil (de granges ramaderes convencionals, ecològiques o de la DOP Teruel), tecnologia aplicada en el procés d'assecatge (complint els requisits per a la certificació ecològica), així com la influència del sistema d'assecatge (finestra oberta o cambra), avaluant els paràmetres que permeten classificar les diferents variables. Per a això s'analitzen un total de 36 pernils de porc blanc, prenent 12 de cadascuna de les procedències objecte d'estudi (convencional, ecològic i DOP Teruel), destinant 6 pernils de cadascuna per a l'assecatge natural i altres 6 per a l'assecatge en cambra. Els paràmetres analitzats són humitat, minerals totals, sodi, ferro, proteïna, greix, perfil d'àcids grassos, nitrats i nitrits, detecció d'antibiòtics i compostos de la fracció volàtil. Els resultats indiquen que els paràmetres de color L*, b* i C* són majors en els pernils procedents de sistemes de producció convencional, en particular en els pernils DOP Teruel, on a més s'inclou el paràmetre a*. Els pernils de sistemes de producció convencional es caracteritzen per presentar valors més elevats d'humitat, greix, proteïna i cendres, així com un contingut en àcids grassos saturats major. Això repercuteix en els valors dels índexs de qualitat del greix, amb connotacions negatives en l'índex de aterogenicitat, de trombogenicitat o en la relació ω6/ω3, sobretot si els pernils s'assequen en cambra. Els pernils ecològics presenten valors més baixos dels components químics analitzats i nivells superiors de AGMI i AGPI, així com índexs positius de qualitat del greix com el d'àcids grassos bons per a la salut o la relació AGPI/AGS, especialment si s'assequen al natural. Generant pernils amb una major presència de compostos volàtils. La classificació dels pernils, en funció de la procedència i el sistema d'assecatge, s'aconsegueix amb èxit prenent els paràmetres de color, àcids grassos i els components terpenoides de la fracció volàtil. L'estudi de components principals permet classificar els pernils convencionals com aquells amb major contingut en proteïna, L*, cendres, Fe, Na, H*, humitat, greix, nitrats i nitrits, així com pels àcids grassos behénic, palmític, esteàric i mirístic. Els pernils ecològics es caracteritzarien pels seus valors de a*, b* i C*, així com per la presència de linoleic i linolènic i els pernils DOP Teruel serien aquells amb alts valors d'àcids grassos heptadecenoic, palmitoleic i oleic.
[EN] The raw material is a key element in any food transformation process, since the final product will depend on its composition and qualities. In the case of ham, the origin of the raw material can come from conventional livestock systems, where production is intensive and food is based on commercial feed. In the case of pigs from organic farming, the animals are subject to the conditions set by the European organic production regulations where the environment and animal welfare is respected. In the case of quality figures, livestock farms must also meet the requirements indicated in the specifications. Another element that defines cured ham is the production process, which begins with salting, with or without nitric salts. The duration of the drying-maturing, the drying system (natural or with an open window versus chamber with controlled conditions) and temperature are key elements in the development of organoleptic qualities. The main objective of this study is to provide results on the evolution in the composition of the meat, throughout the drying-maturation process, in the elaboration of dry-cured ham, having as variables of the study, the origin of the leg (from cattle farms conventional, ecological or of the Teruel PDO), technology applied in the drying process (meeting the requirements for ecological certification), as well as the influence of the drying system (open window or chamber), evaluating the parameters that allow classifying the different variables. For this, a total of 36 white pig hams are analyzed (conventional, organic and PDO Teruel), allocating 6 hams of each for natural drying and another 6 for drying under controlled conditions. The parameters analyzed are moisture, total minerals, sodium, iron, protein, fat, profile of fatty acids, nitrates and nitrites, detection of antibiotics and compounds of the volatile fraction. The results indicate that the color parameters L *, b * and C * are higher in hams from conventional production systems, particularly in PDO Teruel hams, where the a * parameter is also included. Hams from conventional production systems are characterized by higher moisture, fat, protein and ash values, as well as a higher saturated fatty acid content. This affects the values of the fat quality indices, with negative connotations in the atherogenicity index, thrombogenicity or in the ω6/ω3 ratio, especially if the hams dried in controlled conditions. Organic hams present lower values of the chemical components analyzed and higher levels of MUFA and PUFA, as well as positive indices of fat quality such as fatty acids good for health or the PUFA / SFA ratio, especially in natural driying. Generating hams with a greater presence of volatile compounds. The classification of hams, depending on the origin and the drying system, is successfully achieved by taking the parameters of color, fatty acids and the terpenoid components of the volatile fraction. The study of main components makes it possible to classify conventional hams as those with the highest content in protein, L *, ashes, Fe, Na, H *, moisture, fat, nitrates and nitrites, as well as by behenic, palmitic, stearic and myristic. Organic hams would be characterized by their a *, b * and C * values, as well as by the presence of linoleic and linolenic levels, and DOP Teruel hams would be those with high levels of heptadecenoic, palmitoleic and oleic fatty acids.
Domínguez Gómez, MJ. (2020). Efectos de la materia prima y el proceso secado-maduración sobre la calidad del jamón curado [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/160042
TESIS
Veselý, Jakub. "Analýza a návrh Open Source řešení pro Městský úřad Blansko." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2010. http://www.nusl.cz/ntk/nusl-264870.
Full textNelson, Ryan. "Octatonic Pitch Structure and Motivic Organization in George Walker's Canvas for Wind Ensemble, Voices, and Chorus." Thesis, connect to online resource, 2003. http://www.library.unt.edu/theses/open/20031/nelson%5Fryan/index.htm.
Full textAljadiri, R. T. "Modelling and design of electrostatic based wind energy harvester." Thesis, Coventry University, 2014. http://curve.coventry.ac.uk/open/items/9ee6a6e1-bd1d-4717-b48d-ee48fefb4657/1.
Full textFoschi, Edoardo. "Design of a return circuit for an open loop wind tunnel." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21536/.
Full textMcCallum, Wendy M. "Pedagogical style and influence of Nadia Boulanger on music for wind symphony an analysis of three works by her students, Copland, Bassett, and Grantham /." Thesis, connect to online resource. Access restricted to the University of North Texas campus, 2004. http://www.unt.edu/theses/open/20041/mccallum%5Fwendy/index.htm.
Full textOwens, David Elliot. "Wall Features of Wing-Body Junctions: Towards Noise Reduction." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23717.
Full textMaster of Science
Marathe, Anup Ramesh. "Buckling of dome structure with opening, under wind load." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Full textSholtis, Paul M. "Characterization of Upstream Effects Due to High Blockage in the AFRL Vertical Wind Tunnel." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton155594746187138.
Full textDiaz, Alexander, Steven Rivera, Leonardo Vinces, and Carpio Christian Del. "A Development of a Mobile Application for Monitoring Siemens S7-1200 Controller Variables Through Firebase." Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/653777.
Full textProduction systems need to be monitored because failure to do so can cause a delay in production due to a lack of remote monitoring. There are solutions that provide this information, but they are limited, because they are owned and very expensive solutions. This paper proposes the development of a mobile application for the monitoring of S7-1200 programmable controller variables through Firebase. The goal is to use open-source-type tools to develop a real-time variable monitoring application of a programmable controller capable of hosting a Web server, and the sent data to the Firebase cloud, in order to avoid modifying the driver software and the data stored in memory. The implemented system of sending, handling and presenting variables is developed with tools of open source type, since they have as an advantage to have greater freedom in programming, unlike proprietary solutions or services. The tests were performed on the Siemens S7-1200 controller with a plastic injection molding machine.
Revisión por pares
Tourn, Cremona Silvana Cecilia. "Characterization of a New Open Jet Wind Tunnel to Optimize and Test Vertical Axis Wind Turbines." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/461079.
Full textBasado en el creciente interés en las tecnologías ambientales urbanas, el estudio de turinas de eje vertical de pequeña escala muestra desafíos motivadores. En esta tesis, se presentan los criterios de diseño, las características y potencialidades de un nuevo túnel de viento de seccion de prueba abierta. Tiene un área de salida e la boquilla del túnel de 1,5 x 1,5 m2, y se puede operar con velocidades de salida de 3 m/s a 17 m/s. La caracterización del flujo se ha llevado a cabo con tubos pitot calibrados, anemómetros de cazoletas y anemómetros de hilo caliente. Se consideran dos configuraciones diferentes del área de prueba, con y sin techo. Las mediciones en el rango de velocidades de salida disponibles muestran que la sección transversal, donde las intensidades de velocidad y turbulencia muestran un nivel aceptable de uniformidad, tiene un área de 0,8 x 0,8 m2 y una dimensión de 2 m desde la salida de la boquilla del túnel. En esta sección de trabajo, la intensidad máxima de la turbulencia es del 4%. La caracterización detallada del flujo realizado indica que el túnel de viento se puede utilizar para probar modelos a de aerogeneradores de pequeña escala.
Based on the increasing interest in urban environmental technologies, the study of small scale vertical axis wind turbines shows motivating challenges. In this thesis, we present the design criteria, characteristics and potentials of a new open jet wind tunnel. It has a nozzle exit area of 1.5 x1.5 m2, and it can be operated with exit velocities from 3 m/s to 17 m/s. The characterization of the flow has been carried out with calibrated pitot tubes, cup anemometers, and hot wire anemometers. Two different configurations of the test area, with and without a ceiling, are considered. Measurements in the range of available exit velocities show that the cross section, where the velocity and turbulence intensities show an acceptable level of uniformity, has an area of 0.8 x 0.8 m2 and a streamwise dimension of 2 m from the nozzle exit of the tunnel. In this working section, the maximum turbulence intensity is 4%. The detailed characterization of the flow carried out indicates that the wind tunnel can be used to test small scale models of wind turbines.
Limberger, Rodrigo Prestes. "Estudo do forjamento de eixos vazados com contorno interno para utilização em aerogeradores." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/139351.
Full textThis work proposes the investigation of the internal contour of hollow shafts for wind turbines when applied mandrels with different diameters along its length in incremental open-die forging. It is intended to manufacture a mandrel to provide a forged part closer to the final proposed geometry. Studies were conducted using the numerical computer simulations software Simufact.forming 12 and models of plasticine aiming possible mandrel geometries, varying the angle of the different-diameters region along the length between 0˚, 30˚ and 60˚ and analyzed the behavior of the material flow in the region. As the simulation process was concluded, the mandrel with the best performance was produced and practical tests were performed. In total, two workpieces were forged and analyzed its results. The proposed geometry was achieved, confirming the choice of process kinematics. The temperature of the mandrel was measured and compared with the temperature during the simulation at the last pass, the measurement resulted in 720°C and the simulated around 620°C. The forging forces showed differences between simulation and forging of an average of 7.6%.
Milbank, Juliette, and milbank@turbulenflow com au. "Investigation of fluid-dynamic cavity oscillations and the effects of flow angle in an automotive context using an open-jet wind tunnel." RMIT University. Aerospace, Mechanical & Manufacturing Engineering, 2005. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090723.121800.
Full textHjärtström, Daniel. "Utilizing web standards for cross platform mobile development." Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-20421.
Full textSkalický, Martin. "Cyklistický/běžecký tréninkový deník využívající GPS data." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237039.
Full textGiez, Justine. "Effets de charge et de géométrie sur le bruit d'interaction rotor-rotor des doublets d'hélices contra-rotatives." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEC005.
Full textThe development of alternative propeller systems to turbojets is a main issue for research in the current context of aeronautical transport. Counter rotating open rotors are a candidate solution because they allow reduction of fuel consumption and gas emission. However, noise emissions are still a challenge for these types of configuration, in particular because they cannot benefit from the nacelle and the liners currently used in turbojet. The understanding of acoustic sources and their prediction is necessary in order to be able to reduce noise emission in the near future. Flows in an open-rotor are complex, in particular for the downstream propeller which is the subject of this approach.This work based on a numerical, experimental and analytical study and takes part in the ADOPSYS chair between Safran Aircraft Engines and l’Ecole Centrale de Lyon. This PhD has two main goals. The first one is to complete an experimental study in order to elucidate the behavior of the flow on a swept airfoil and the resulting acoustics, with a possibly developing leading-edge vortex. The measurements will be a data base for further comparison with analytical prediction. The second objective of the PhD consists in developing a semi-analytical modeling of the noise emitted by an airfoil in response to an incoming perturbation, taking into account the loading and geometry effects. A numerical study of a full counter-rotating system was used as a basis for designing the investigated airfoil. The latter was designed so that a leading-edge vortex could be formed on the surface for some angles of attack. The mock-up was then tested in an anechoic wind tunnel of Ecole Centrale de Lyon for various sets of parameters. Flow visualization and wall-pressure measurements indicated the presence of the leading-edge vortex for some angles of attack. The far-field measurements indicated three acoustic regimes, which can be associated with three behaviors of the leading-edge vortex. Source localization measurements corroborate these observations. Analytical predictions of the noise emitted by the airfoil and based on Amiet’s model were also performed. Firstly, the sweep angle is taken into account in the model. Secondly it is applied to the studied airfoil. A better match of the results is found when the sweep is considered, in particular in the perpendicular directions. The model in then extended in order to include the wall-junction. This part is exploratory and should be further developed. Finally, a complementary experimental investigation of the impingement of periodic wakes on the airfoil has been performed, using a system made of rotating bars, mimics true wake interactions. The measurements suggest that the leading-edge vortex has a quasi-steady behavior
Bennaceur, Iannis. "Etude numérique de la diffusion d'une onde acoustique par une couche de cisaillement turbulente à l'aide d'une simulation aux grandes échelles." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0187/document.
Full textDuring open jet wind tunnel measurements, the acoustic waves emitted by a device or an acoustic source located inside the flow propagate inside the turbulent shear layer that develops at the periphery of the jet before being received by microphones located outside the flow. The acoustic wave interacts with the turbulent velocity field leading to a change of directivity, a phase and amplitude modulation as well as a spectral re-distribution of the acoustic energy over a band of frequencies. This phenomenon is known as acoustic scattering. This work has consisted in the study of the scattering of an acoustic wave by a turbulent shear layer using large-eddy simulation. The first step of the study has consisted in the large-eddy simulation of a turbulent shear layer in its self-similar state. In a second second step, the direct computation of the interaction between the acoustic wave and the turbulent flow has been performed in order to study the characteristics of the resulting scattered pressure field. It has been shown that the numerical simulation is able to accurately predict the frequencies on which the main part of the scattered energy is redistributed, as well as the shape of the scattered pressure spectrum. Finally, the turbulent velocity field which is correlated with the envelope of the scattered pressure field is reconstructed using the linear stochastic estimation method. This method has enabled the visualization of the large turbulent structures that mainly take part in the acoustic scattering mechanism
Heidari, Shayan. "Economic Modelling of Floating Offshore Wind Power : Calculation of Levelized Cost of Energy." Thesis, Mälardalens högskola, Industriell ekonomi och organisation, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36130.
Full textGaber, Tarek. "Support consumers' rights in DRM : a secure and fair solution to digital license reselling over the Internet." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/support-consumers-rights-in-drm-a-secure-and-fair-solution-to-digital-license-reselling-over-the-internet(6b653587-36d3-4074-8578-5eaacdb68004).html.
Full textTunková, Martina. "Městské lázně." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215713.
Full textCHU, YI-CHEN, and 朱奕溱. "Solving the Air Permeability Window Open Difficulty With TRIZ." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/23w79c.
Full text國立高雄科技大學
工業工程與管理系
107
If the buildings need to ventilate, we must need windows. Due to Taiwanese using habits, the Horizontal Sliding Windows is more popular.Taiwanese use to living in the High-rise building ; what’s more, the strength of typhoons is getting stronger and stronger . Therefore, the requirement of windows’ air permeability is much higher than before.With the requirement about the promotion of living quality, the consumers’ request of sound insulation is rising. To respond the needs of consumers, the effects of sound insulation is obviously improved. Because of these improvements, we need to use the air permeability strip、plenty of Hardware tools and the thickness of glasses to satisfy the consumers’ requirements. However, adding air permeability strip may make the Alu Clad Windows hard to be opened. The original purpose of windows is to let the living space ventilate.So as not to violate the original purpose(ventilation), we need to improve the opening problem of windows. Thus,we choose to discover the problems by Cause and effect Analysis, with choosing TRIZ’s 39 Engineering Matrix into Inventive TRIZ Matrix to find out the most suitable items of 40 Inventive Principles. In addition, we will use the tension test to prove the effects has been improved. Solving the window open difficulty by TRIZ theory.Air permeability strip was changed but still could pass the mock-up test.Make customers feel that opening the window is no longer a tiring thing.Manufacturer won’t be charged by this problem.Manufacturer not noly could avoid unnecessary、large amount of engineering deduction ,but solving the time cost of replacing hadeware by engineering stuff .
Câmara, Maria Carolina Andion Boulloza Perry da. "Liquidity risk : an opportunity to open the window after closing a door." Master's thesis, 2014. http://hdl.handle.net/10400.14/17370.
Full textDu, Toit Getruida Elizabeth. "Information-seeking behaviour of the Open Window School of Visual Communication undergraduate students : a case study." Diss., 2015. http://hdl.handle.net/10500/21187.
Full textInformation Science
M. Inf.
Lopes, Pedro Miguel Cravinho. "An open window to a different world: encounters with jazz on television in Portugal (1956-1974)." Doctoral thesis, 2018. http://hdl.handle.net/10773/24261.
Full textA presente dissertação apresenta uma abordagem etnomusicológica à produção televisiva de música jazz no âmbito da Radiotelevisão Portuguesa, entre 1956-1974. A partir de meados do século XX, a sociedade portuguesa passou por profundas transformações, directa ou indirectamente, relacionadas com o advento da televisão (Barreto 2000). Essas mudanças de comportamento e mentalidade, que Rosas descreve como “mudanças invisíveis”, ocorreram durante a Guerra Fria sob a influência dos Estados Unidos da América num contexto de isolamento do país do resto do mundo sob a governação do regime do Estado Novo (Rosas 2001). Em Março de 1957, a televisão surge como instrumento de unificação e conformação do povo português à ideologia dominante e às políticas culturais do regime, ou em ruptura com esses valores através da circulação na esfera pública nacional de novos conteúdos culturais transnacionais, assumindo-se como uma ‘janela aberta para um mundo diferente’. Consequentemente, a televisão deu um contributo significativo para a difusão do jazz em Portugal, como prática social e musical, que até então se restringia principalmente à esfera privada (clubes, concertos e festivais), transmitindo não só os conteúdos da televisão nacionais mas também produzindo no exterior. No entanto, não contribuiu apenas para a disseminação do jazz na esfera pública portuguesa. Também proporcionou um contraponto cultural significativo às políticas coloniais do regime do Estado Novo. No sentido de compreender a complexidade desses processos, quer ao nível da diversidade da programação televisiva de jazz, quer a sua potencialidade subversiva, esta tese recorre ao estudo do percurso profissional do Assistente de Produção Musical da RTP, Manuel Jorge Veloso (1937-). É traçada a sua trajectória pessoal e musical no âmbito da cena jazzística portuguesa, assim como analisada a sua actividade profissional tripartida no âmbito da programação televisiva de jazz em Portugal: enquanto produtor, apresentador e músico de jazz. Tratando-se de um ‘território inexplorado’ no quadro da investigação em Portugal, esta dissertação realiza um exame aprofundado da produção televisiva dedicada ao jazz na âmbito da RTP, assim como do influente papel de Manuel Jorge Veloso nesse processo, recorrendo a pesquisa arquivista, bibliográfica e trabalho de campo. Desta forma, pretende oferecer um contributo para uma reflexão sobre o papel da televisão enquanto meio de disseminação do jazz em Portugal e para o mapeamento da programação televisiva dedicada ao jazz que foi transmitida pela Radiotelevisão Portuguesa durante o regime do Estado Novo (1956-1974).
Programa Doutoral em Música
Sung, Ting-Mei, and 宋挺美. "Open a New Learning Window for Suburban Pupils: An Action Research on the Newspaper in Education in an Elementary School in Taipei County." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/20344840873956708879.
Full text淡江大學
教育政策與領導研究所碩士在職專班
98
This is an action research which implemented Newspaper in Education for the 5th graders of a suburban elementary school in Taipei County. The purpose of this action research is to use the different strategies to develop the reading program with the core of the “excellent little citizen”, “sharing the articles about parent-child” and “widespread reading”. In the process of action research, multiple methods, such as observation, interview, document analysis, survey are used to explore the situation of Newspaper in Education, students’ opinions, possible difficulties, feasible teaching strategies in practice and to reflect the teaching methods. Based on results of this research, some conclusions are synthesized as follows: I. To apply Newspaper in Education in class will promote the 5th graders’ language ability. 1. Playing games with all kinds of materials advances the interest of student reading. 2. To solicit articles by hot topics of conversation, to talk by watching pictures in language classroom, and to read the Little Hurry comic book promote pupils’ abilities of reading and writing. 3. To apply all kinds of reading methods in class promotes pupils’ abilities of admiring articles and talking expression. II. To prepare information fully and flexible classes promotes the efficiencies of Newspaper in Education. 1. Warming-up course is necessary. 2. The Newspaper in Education by asking, linking, discussing, sharing helps to advance pupils’ abilities of reading and rectification. 3. The reading course should be adjusted with the pupils’responds. III. To apply Newspaper in Education in class advances parent-children interaction. 1. Sharing the articles about parent-child advances parent-children interaction. 2. These activities of reading and cutting newspaper advance the parents and children’s abilities of reading and talking. IV. To apply Newspaper in Education in class advances pupils’ concern for the society and the citizenship. 1. To apply Newspaper in Education in class improves pupils’ concern for the current affairs of the society. 2. The discussion of the current events on newspaper advances pupils’ thinking ability. V. To apply Newspaper in Education in class provides opportunity for the researcher to have reflections and professional growth. 1. The researcher needs to find the methods for the difficulties in the process of action research. 2. The researcher gets grown in the process of action research. Based on conclusions mentioned above, the researcher proposes some suggestions for educational administration, school, action teachers and parents for reference.
LI, Yi-Yen, and 李宜燕. "Open a Window of Opportunity for the New Immigrant Family:A Case Study of One Pair of New Immigrant Parent-Child for Learning Mathematics." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/76876392953240181047.
Full text中原大學
教育研究所
100
To incorporate the Magic Board and the culture of the new immigrant’s mother countries into the parent-child for learning mathematics of new immigrant family, the purpose of this study was to explore the learning experience and process, as well as outcomes of the new immigrant mothers and children. This study employed a case study approach, by using in-dept interviews, participatory observation, and video-taping of teaching and learning for a half-year. Findings of this study included the following. First, the new immigrant mothers and children liked the parent-child model for learning mathematics and viewed the learning as a joyful process. Similarly, the parent-child model also helped the children become fond of learning mathematics. Second, new immigrant’s mothers and children agreed that the parent-child model for learning mathematics fostered the interaction between the mothers and children, improved mathematics outcomes, and directed learning mathematics. Third, teachers confirmed that the parent-child model was beneficial to promote mathematics learning.
Huang, Siang-yue, and 黃湘月. "USING STAMPS TO OPEN THE WINDOW ON CULTURE FOR EFL STUDENTS ON THE INTERMEDIATE AND THE ADVANCED LEVELS IN AN ELEMENTARY SCHOOL IN PINGTUNG COUNTY." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/25834081653764232131.
Full text國立高雄師範大學
英語學系
99
The purpose of the study is to investigate the effects of the stamp-oriented project (SOP) on English reading performance of the intermediate level students (ILS) and the advanced level students (ALS). Specifically, the difference between the ILS’s and the ALS’s responses to English vocabulary, reading comprehension and cultural awareness were examined and analyzed. Additionally, the ILS’s and the ALS’s comments and suggestions were further explored. The subjects of the study were 71 third to sixth grade students from four classes in Tien-nan Elementary School in Liou-chiou Hsiang, Pingtung County, Taiwan. They were recruited into the ILS and the ALS group. The ILS group included 39 third and fourth graders from two classes, and the ALS group was 32 fifth and sixth graders from two classes. During a twelve-week the SOP program, both of the groups received four SOP lessons, Flags, Popular Sports, Special Animals and Nature. Before and after the SOP program, the subjects were asked to have the pretest and post-test of English vocabulary and reading comprehension to investigate their reading performance respectively. In addition, the subjects were asked to write worksheet after learning each lesson. After the SOP program, the students were asked to answer questionnaires to investigate their attitudes to the SOP. Then, the tests scores and the responses to the SOP were computed and compared by paired samples t-tests and independent sample t-tests respectively. Besides, the students’ comments and suggestions for the SOP were analyzed qualitatively. On the basis of the data analysis, the major findings of the present study are summarized as follows. 1.There are significant differences on English reading performance for the ILS and the ALS before and after the SOP respectively. Both of the ILS and the ALS significantly improved their English reading performance in terms of English vocabulary and reading comprehension. The SOP significantly help improve the students’ reading performance. 2.There is a significance in the ILS’s and the ALS’s responses to English vocabulary and reading comprehension. Many of the ALS showed they did not have many difficulties learning the English vocabulary and understanding English articles in the SOP, while many of ILS did. However, both of them indicated that they improved English vocabulary and reading comprehension after receiving the SOP. 3.There is a significance in the ILS’s and the ALS’s responses in terms of cultural awareness. Most of the ALS could understand that cultures are sometimes different, while sometimes are the same. They could also show respects to cultures different from their own culture. The results show that the ILS developed lower cultural awareness than that of the ALS. 4.The students held positive attitudes toward the SOP program in culture and reading instruction. Specially, they expressed that they were willing to learn more SOP lessons in the future. Based on the study findings, it is suggested that the teachers can apply the SOP in their English classes. Through the SOP, students enhanced their reading performance and cultural awareness. To be specific, teachers through stamps can help students develop both reading proficiency and cultural knowledge.
"Automated Event-driven Security Assessment." Master's thesis, 2014. http://hdl.handle.net/2286/R.I.24765.
Full textDissertation/Thesis
M.S. Computer Science 2014
Ya-YunJheng and 鄭雅云. "Heuristic Algorithm for Two-Stage Open Shop Scheduling Problem with Time Windows." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/47921944429615756513.
Full textLin, Yun-han, and 林韵函. "A particle swarm optimization for the open vehicle routing problem with time windows." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/70777313684326246549.
Full text國立臺灣科技大學
工業管理系
100
This research considers the open vehicle routing problem with time windows (OVRPTW), a new variant of the well-known vehicle routing problem (VRP) and an extension of the vehicle routing problem with time windows (VRPTW). The objective of this study is to describe the problem and develop an effective algorithm for solving the problem. VPR as well as VRPTW belong to the class of NP-hard problem. When the problem scale gets larger, the difficulty and time for finding an optimum solution also increase. Therefore, heuristic algorithms are often developed for solving VRP and VRPTW problems. The OVRPTW in this study is also an NP-hard problem. Thus the goal of this study aims at developing a heuristic algorithm to solve OVRPTW. The results of computational study show that the proposed algorithm is effective in solving the OVRPTW within a reasonable amount of time. The obtained solutions reduce travel distance while using more vehicles. However, this increase in vehicle use is still acceptable. This study indicates that it is possible to reduce the operating costs of third party logistics (3PL) companies while satisfying the rigid constraints from customers and logistics operations.
Chiang, Tsung-Han, and 蔣宗翰. "A tabu search algorithm for the open inventory routing problem with time windows." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/10442624953190659836.
Full text國立臺灣科技大學
工業管理系
101
The open vehicle routing problem (OVRP) is one of the extensions of the vehicle routing problem (VRP). The original VRP concerns a closed loop problem in which all the routes start and end in the same depot. On the other hand, the OVRP is an open loop problem in which each vehicle starts from a depot, but ends at a final served customer. The applications of OVRP include school bus, train service, and third party logistics. In this research we incorporate the inventory effect into a routing decision, consider the time-window situation in our life and then define a new problem called the open inventory routing problem with time window (OIRPTW). This research presents a mathematical model and algorithm of the OIRPTW based on tabu search (TS). The objective of the OIRPTW is to minimize the sum of the total transportation costs, inventory costs and penalty item of time-window constraint.
Asri, Arlita Nurmaya, and Arlita Nurmaya Asri. "A Branch-and-Price Approach for the Open Location Routing Problem with Time Windows." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/5c9e3j.
Full text國立臺灣科技大學
工業管理系
105
Facility location and vehicle routing problems are two critical decisions in designing a supply chain network. Although they are often solved separately because of the differences in their planning horizon, these two problems have been proven to be interdependent. Therefore, the location routing problem (LRP) is proposed to solve these problems simultaneously. The problem extend from a practical perspective when the companies do not have their own vehicles to deliver their products. Considering in some real-life situations, arrival time at a customer will affect the customer’s satisfaction level or sales to the customer. Each customer may have a specific service time window during which s/he can be serviced, and a service vehicle must arrive within this time window to start its service. Therefore, this study combines the open location routing problem (OLRP) and time windows constraint into the open location routing problem with time windows (OLRPTW). This study proposes a branch-and-price algorithm to solve OLRPTW. This problem is solved by the simplex algorithm in the master problem. The elementary shortest path problem with resource constraints (ESPPRC) is used in this pricing problem which has the goal to generate feasible routes with negative reduced costs to be added to the restricted master problem (RMP). The OLRPTW instances are derived from three LRP benchmark data sets. The computational result indicates that the branch-and-price algorithm is comparable for small-medium instances. For large instances, it can solve instance with 200 customers and 10 depots to the optimality.
Chiu, Hsiao-Chien, and 邱筱茜. "A Creation Study on Patterns of Open-type Iron Windows: Based on Civilian Customs in Tainan." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/xuzcw7.
Full text崑山科技大學
視覺傳達設計研究所
104
Iron window-black iron, embracing many tricks of window-during the Japanese colonial period from Japan and the Tainan Street Lane, is often seen, beautiful people habitually ignored, its value can be used to characterize the diverse patterns of contemporary everyday life aesthetics. This creation research through collection Tainan, and Taipei, and street of iron spent window patterns and meeting whole, and analysis will patterns classification into Japan culture, and geometry, and new art baby, category, and Japan traditional of patterns control Hou can understand patterns except anti-theft function, and beautiful decorative outside, also can reflect contemporary of Palace life, and life aesthetics, and popular things baby,, and we today by saw of iron spent window, are is 30-60 years generation Shi by built out of, reflect with that times of Palace life, is that era of memory where. Today, Taiwan in the process of westernization, course environment is entering the high degree of homogeneity, what patterns can be used to characterize, represent this area in Tainan? Tainan's unique characteristics and culture then what is it? Iron spent window from Tainan fortune, will return Tainan, through window light-time-circulation, reverse thinking now Tainan unique of special culture why, those and iron spent window as, not retained on will disappeared of culture, and exists Yu life, and food clothing live line Yu Le of Palace culture, and will collected and to of iron spent window patterns finishing, and analysis out its five big rules: composition elements, and process workers method, and patterns category, and patterns arranged way, and itself characteristics, in these rules Xia and Tainan culture combined, creation out belongs to Tainan of patterns, will its to " Units of stereo-plane-"three levels, expression from the unit to the plane to solid performance and use different materials to make, produce a series of studies on performance of process, formed the evolution.