Дисертації з теми "Applications in physical sciences"
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Rajotte, Matthew. "Stochastic Differential Equations and Numerical Applications." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3383.
Повний текст джерелаYassin, Zakiya. "Characterization of OSTE-based polymers for acoustofluidic applications." Thesis, KTH, Tillämpad fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209924.
Повний текст джерелаNinic, Svensson Carlo, and Berger Berg. "Characteristics and Applications of One Dimensional Single Photon LiDAR." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297814.
Повний текст джерелаNinic, Svensson Carlo, and Viktor Berger. "Characteristics and Applications of One Dimensional Single Photon LiDAR." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297814.
Повний текст джерелаJohansson, Sara. "Evaluation of Commercial Radar Sensors for Proximity Fuze Applications." Thesis, Umeå universitet, Institutionen för fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-165309.
Повний текст джерелаRadarsensorer har länge använts inom militära applikationer men har på senare tid introducerats på den civila marknaden i form av exempelvis adaptiva farthållare i fordon. Radarsensorn hjälper fordonet att detektera avståndet till fordonet framför samt medför att den kan korrigera hastigheten för att hålla ett säkert avstånd och minska risken för olyckor. Utvecklingen inom den civila marknaden har lett till att radarsensorer idag är både billiga och lättillgängliga. Syftet med detta examensarbete har varit att undersöka den civila marknaden för att se om det finns någon tillgänglig radarsensor som skulle kunna användas för applikationer i zonrör. Marknaden genomsöktes genom att genomföra en litteraturstudie där artiklar innehållande information om frekvensmodulerade kontinuerlig våg radar och pulsad Doppler radar som opererar med en frekvens i GHz-området studerades. Faktorer och egenskaper som tillgänglighet, räckvidd och spridningsvinkel var några av de egenskaper som analyserades. I denna studie hittades fem intressanta frekvenser för frekvensmodulerad kontinuerlig våg radar som används inom olika applikationer på den civila marknaden, 24 GHz, 35 GHz, 77 GHz, 94 GHz och 122 GHz. Baserat på litteraturstudiens resultat beslutades att en 77 GHz radarsensor skulle utvärderas genom fysiska tester för att utvärdera radarsensorns prestanda. Först undersöktes om radarsensorn kunde detektera en drönare på avstånd upp till 20 m i en miljö med eller utan störningar i omgivningen. Tester genomfördes för drönaren när den befann sig i vila eller i rörelse med en hastighet på ungefär 3 m/s. Radarsensorn lyckades detektera testobjektet under samtliga avstånd, hastigheter och miljöer men hade vissa svårigheter att få en tydlig detektering av objektet i miljön innehållande bakgrundsstörningar. Tester genomfördes också på en metallplatta med större radarmålarea än drönaren. Radarsensorn lyckades detektera testobjektet på ett avstånd upp till 20 m och när objektet befann sig 10 m från sensorn i både x- och y-riktning d.v.s. 45 ° från utvärderingsmodulen. Utifrån dessa resultat framkom det att radarsensorer utformade för autonoma applikationer har potential att användas i zonrörs-tillämpningar men att vidare tester för längre avstånd och högre hastigheter måste genomföras innan en slutgiltig slutsats kan dras.
Vestberg, Robert. "Dendron decorated chromophores for optical power limiting applications." Doctoral thesis, Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-78.
Повний текст джерелаMyers, Jametta. "Applications of Operations Research in Domestic Electric Utilities." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1658.
Повний текст джерелаEaton, Chris. "Designing Mobile Applications Around Load-Balancing Principles to Improve Performance." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/honors/142.
Повний текст джерелаPeters, Kyle C. "Sustainable Materials and Processes for Optoelectronic Applications." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1554397264722736.
Повний текст джерелаCrudden, D. J. "Alloys-by-design : applications to polycrystalline nickel superalloys for turbine disc applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:b60e1854-cae4-4dd3-8d6f-cec1351e4c17.
Повний текст джерелаWang, Haodong. "A privacy preserving framework for cyber-physical systems and its integration in real world applications." W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539623552.
Повний текст джерелаRittenhouse, Michelle L. "Properties and Recent Applications in Spectral Graph Theory." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1126.
Повний текст джерелаKannan, Balamurali. "Fabrication of surface amine gradients by controlled-rate infusion for chromatographic applications." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/533.
Повний текст джерелаRadwan, Farah. "SYNTHESIS, FUNCTIONALIZATION AND CHARACTERIZATION OF DUAL MODE NANOPARTICLES FOR BIOMEDICAL APPLICATIONS." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2264.
Повний текст джерелаHagelberg, Frank. "Electron Dynamics in Molecular Interactions: Principles and Applications." Digital Commons @ East Tennessee State University, 2014. http://amzn.com/1848164874.
Повний текст джерелаhttps://dc.etsu.edu/etsu_books/1055/thumbnail.jpg
Oyola, Mayra I. "Implementation of a Global Dust Physical Sea Surface Temperature Retrieval For Numerical Weather Prediction Applications." Thesis, Howard University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10188977.
Повний текст джерелаThis works presents the results for the first study to ever attempt to analyze the full potential and limitations of incorporating aerosols within a truly physical SST retrieval for operational weather forecasting purposes. This is accomplished through the application of a satellite sea surface temperature (SST) physical retrieval for satellite split-window and hyperspectral infrared (IR) sensors that allows a better representation of the atmospheric state under aerosol-laden conditions. The new algorithm includes 1) accurate specification of the surface emissivity that characterizes the surface leaving radiance and 2) transmittance and physical characterization of the atmosphere by using the Community Radiative transfer model (CRTM). This project includes application of the NEMS-Global Forecasting System Aerosol Component (NGAC) fields, which corresponds to the first global interactive atmosphere-aerosol forecast system ever implemented at NOAA’s National Center for Environmental Prediction (NCEP).
A number of limiting factors were identified by analysing brightness temperatures and SST outputs biases as a function of latitude, zenith angle, wind and moisture for cases in January and November 2013. SST ouputs are validated against a bulk SST (Reynolds SST) and a parameterized SST derived from operational products and partly against observed measurements from the eastern Atlantic Ocean, which is dominated by Saharan dust throughout most of the year and that is also a genesis region for Atlantic tropical cyclones. These observations are obtained from the NOAA Aerosols and Ocean Science Expeditions (AEROSE). The improved physical SST methodology has the potential to allow for improved representation of the geophysical state under dust-laden conditions.
Tremblay, Louis-Bruno. "Modelling sea ice as a granular material, with applications to climate variability." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34472.
Повний текст джерелаThe origin and space-time evolution of Beaufort Sea ice anomalies are studied using data and the sea-ice model described above. In particular, the influence of river runoff, atmospheric temperature and wind anomalies in creating anomalous sea ice condition in the Beaufort Sea is studied. The sea-ice model is then used to track the position of an ice anomaly as it is transported by the Beaufort Gyre and the Transpolar Drift Stream out of the Arctic Basin.
It can be inferred from driftwood data collected in the Canadian Arctic Archipelago that very different sea-ice drift patterns were present in the Arctic Ocean during the Holocene. In this study, the sea-ice model described above is used to examine the different modes of Arctic sea-ice circulation during this period, and also to infer characteristics of century-to-millennial scale changes in Arctic atmospheric circulation. (Abstract shortened by UMI.)
Bjürnsson, Halldór. "A coupled zonally averaged ocean sea ice atmosphere model with applications to quaternary climate variability /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34503.
Повний текст джерелаThe results obtained with this coupled model are compared with those from an ocean-only model that employs mixed boundary conditions. The differences in the steady states of the two models and their linear stability are examined over a wide range of parameters, for both one- and two-basin ocean models. The presence of additional feedbacks between the ocean circulation and the atmosphere and hydrological cycle in the coupled model produces significant differences between the latter and the ocean-only model. The two models generally have different (though similar) equilibria, but, more importantly for the issue of climate change, the variability in the models near similar steady states is quite different. These differences indicate that to perform relevant investigations of long-term climatic variability, a coupled model is necessary.
Next the coupled model with three-ocean basins is applied to last glacial maximum (LGM) conditions. It is found that to achieve realistic results, it is necessary to add a thermodynamic sea ice model into the coupled atmosphere-ocean model. The variability of the LGM conveyor circulation in the coupled ocean-sea ice-atmosphere model is then examined, and the model is subjected to a range of freshwater perturbation experiments. The conveyor state circulation is quite sensitive to the interbasin atmospheric transport of water vapour from the Atlantic to the Pacific. In particular, increasing this transport makes the conveyor state more robust. The LGM model circulation does not exhibit internal century-to-millennial scale variability, nor can the latter be excited by steady freshwater forcing. However, rapid climatic change on a timescale of decades can be generated through transient freshwater forcing of the northern North Atlantic. Perturbations in the ocean circulation are also found to propagate from the Atlantic Ocean to the Pacific Ocean in a few decades. Stochastic, white noise forcing of the model results in a mainly red noise response but also excites a natural mode of THC variability with a timescale of about 150 years.
Sønderby, Steffen. "Physical Vapor Deposition of Yttria-Stabilized Zirconia and Gadolinia-Doped Ceria Thin Films for Fuel Cell Applications." Licentiate thesis, Linköpings universitet, Tunnfilmsfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84611.
Повний текст джерелаScott, Daniel F. "DEVELOPMENT OF LUMINESCENT SENSING SYSTEMS WITH CLINICAL APPLICATIONS." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/184.
Повний текст джерелаNagler, Pamela Lynn. "Remote sensing applications: Environmental assessment of the Colorado River delta in Mexico." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279882.
Повний текст джерелаParker, Lonnie Thomas. "Science-centric sampling approaches of geo-physical environments for realistic robot navigation." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44813.
Повний текст джерелаWarren, Christopher. "Synthesis, Characterization, and Functionalization of Magnetic Iron Nanoparticles for Enhanced Biological Applications." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3283.
Повний текст джерелаCheng, Cheng. "Semiconductor colloidal quantum dots for photovoltaic applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:07baccd0-2098-4306-8a9a-49160ec6a15a.
Повний текст джерелаWalker, Ann L. (Ann Lee). "Strategic Planning Applications in Postsecondary Institutions with Accredited Physical Therapy Educational Programs." Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc331640/.
Повний текст джерелаWray, John. "INVESTIGATING THE POTENTIAL APPLICATIONS OF A RAMAN TWEEZER SYSTEM." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3135.
Повний текст джерелаJackson, Gregory M. "A Test Suite Generator For Struts Based Applications." UNF Digital Commons, 2004. http://digitalcommons.unf.edu/etd/294.
Повний текст джерелаGingell, Alexander David. "Applications of Coulomb crystals in cold chemistry." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:3b93832d-b9eb-49e1-b4a4-1bb43d7c9c00.
Повний текст джерелаYates, Phillip. "An Inferential Framework for Network Hypothesis Tests: With Applications to Biological Networks." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2200.
Повний текст джерелаStelljes, Scott. "Applications of Stochastic Calculus to Finance." UNF Digital Commons, 2004. http://digitalcommons.unf.edu/etd/267.
Повний текст джерелаSamanta, Devleena. "UNCONVENTIONAL SUPERHALOGENS: DESIGN AND APPLICATIONS." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2844.
Повний текст джерелаAdams, Jonathan. "Database Auto Awesome: Enhancing Database-Centric Web Applications through Informed Code Generation." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6265.
Повний текст джерелаMawk, Russell Lynn. "A survey of applications of spline functions to statistics." [Johnson City, Tenn. : East Tennessee State University], 2001. http://etd-submit.etsu.edu/etd/theses/available/etd-0714101-104229/restricted/mawksr0809.pdf.
Повний текст джерелаGhanbarian-Alavijeh, Behzad. "Modeling Physical and Hydraulic Properties of Disordered Porous Media: Applications from Percolation Theory and Fractal Geometry." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401380554.
Повний текст джерелаDenison, Michael Hunter. "Image Source Modeling of Time Reversal for Room Acoustics Applications." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7449.
Повний текст джерелаWang, Jing. "Novel Carbon Nanotube Sol-Gel Composite for Sensing Applications." Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etd/2241.
Повний текст джерелаJons, Mattias. "Doped 3C-SiC Towards Solar Cell Applications." Thesis, Linköpings universitet, Halvledarmaterial, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148595.
Повний текст джерелаBarker, Jolene. "APPLICATIONS OF THE BIVARIATE GAMMA DISTRIBUTION IN NUTRITIONAL EPIDEMIOLOGY AND MEDICAL PHYSICS." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1623.
Повний текст джерелаDavis, Brian Lafayette. "Subword Spotting and Its Applications." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7058.
Повний текст джерелаBauer, Thomas. "Thermophotovoltaic applications in the UK : critical aspects of system design." Thesis, Northumbria University, 2006. http://nrl.northumbria.ac.uk/82/.
Повний текст джерелаTonvall, Daniel. "Study of reflective and polarization properties of objects found in automotive LiDAR applications." Thesis, Umeå universitet, Institutionen för fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-173469.
Повний текст джерелаVilasur, Swaminathan Rohith. "Vortices in sinusoidal shear, with applications to Jupiter." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104600.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 97-99).
In this thesis, we have studied the existence of vortex steady states in a sinusoidal background shear flow in a 1.75 layer quasi-geostrophic model. Trying to find vortex structures by integrating the Hamiltonian system has the drawback that the vortices lose enstrophy by filamentation and numerical dissipation, while continuing to deform and wobble. Adopting the local optimization technique of Hamiltonian Dirac Simulated Annealing overcomes this drawback and allows us to obtain steady/quasi-steady vortices that have roughly the same area as that of the initial vortex. The steady states that we have generated range from elliptical with major axis aligned with the flow in the prograde shear region to triangular at the latitude where prograde and adverse shear meet and back to elliptical but with the major axis aligned perpendicular to the shear flow at the center of the adverse shear region. The steady states calculated by the above technique can be used for further analysis and as an initial condition to study the merger of vortices in background shear. This result is directly applicable to the kind of dynamics visible on planets like Jupiter, where vortices residing in zonal shear are a common occurrence.
by Rohith Vilasur Swaminathan.
S.M.
Walker, Richard James. "Quantum cascade laser spectroscopy : developments and applications." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:5021ac50-c69d-4a1d-8071-e59ffed9fcb8.
Повний текст джерелаSevy, Clément. "AI in Simulated 3D Environments : Application to Cyber-Physical systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-251318.
Повний текст джерелаUnder de senaste åren har obemannade flygplan och autonoma system i allmänhet blivit heta ämnen, både inom akademin och industrin. Faktum är att möjligheterna till tillämpning av sådan teknik är stora, med militär- och infrastrukturindustrin som de två mest framträdande fallen. Fram till nyligen medförde autonoma system föga flexibilitet då deras handlingar härrör från väldefinierade program som utför givna, väl specificerade uppgifter, utan större förmåga att anpassa sig till nya förhållanden i omgivningen. Nya framsteg inom AI och Machine Learning har däremot gjort det möjligt att träna datoralgoritmer med oöverträffad effektivitet, vilket öppnade dörren för att ha cyber-fysiska system som kan uppvisa intelligent beteenden och beslutsfattande förmågor. Med hjälp av simulerade miljöer kan man nu träna sådana system för att uppvisa acceptabel prestanda i uppgifter vars komplexitet förbryllade toppmoderna algoritmer för mindre än ett decennium sedan. Ett tillvägagångssätt som har visat sig vara mycket framgångsrikt är Reinforcement Learning (RL). I detta examensarbete använde vi denna metod (tillsammans med andra AI-tekniker) för att ”lära” en virtuell flygande drönare att utföra två olika uppgifter. Den första uppgiften bestod av att få drönaren att flyga mot ett fördefinierat objekt, oavsett var objektet är placerat. Den andra uppgiften innebar att få den att flyga på ett sätt som skulle möjliggöra utforskning av en okänd miljö. Vi kunde kombinera båda uppgifterna: att hitta och leda mot ett specifikt mål inom en okänd miljö, genom att bara använda drönarens relativa position i förhållande till dess startpunkt och dess kamera, därför utan någon miljöspecifik information. Efter en försöksprocess med ett flertal svårigheter utvecklade vi ett ramverk för prospektering på ett plan, med undantag av rörelsen på yaw-axeln. För att kunna utföra sådana uppgifter med en djup Q-nätverksmodell behövde vi hämta en djupbild, drönarens relativa position och en segmenterad bild. Resultaten som presenteras i denna rapport visar att en drönare kan utvecklas för att bli mer ”intelligent” avseende rimlig prestanda för att utföra de ovan nämnda uppgifterna. Vi uppnådde upp till 81% noggrannhet i en okänd testmiljö för en viss uppgift, samtidigt som vi uppnådde 98% noggrannhet för träningsmiljön på samma uppgift. Det ger hopp om att det i framtiden kommer vara möjligt att uppnå liknande fenomen med andra cyber-fysiska system och för mer komplexa uppgifter.
Naik, Sweta. "Design of control release drug delivery system (DDS) for imaging and therapeutic applications." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2606.
Повний текст джерелаMasilela, Mbonisi. "Supporting Data-Intensive Wireless Sensor Applications using Smart Data Fragmentation and Buffer Management." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/779.
Повний текст джерелаRamineni, Sri Ram. "Hidden History: A Mobile Application for Discovering Surrounding Landscapes." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/4953.
Повний текст джерелаOrdonez, Iván. "STA : Spatio-Temporal Aggregation of physical fields with applications to analysis of diffusion-reaction phenomena /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488192960171019.
Повний текст джерелаMan, Gabriel Jen Shi. "Metal Oxide/Semiconductor Heterojunctions as Carrier-Selective Contacts for Photovoltaic Applications." Thesis, Princeton University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10265452.
Повний текст джерелаSolar radiation is a vast, distributed, and renewable energy source which Humanity can utilize via the photovoltaic effect. The goal of photovoltaic technology is to minimize the true costs, while maximizing the power conversion efficiency and lifetime of the cell/module. Interface-related approaches to achieving this goal are explored here, for two technologically-important classes of light absorbers: crystalline-silicon (c-Si) and metal halide perovskite (MHP). The simplest solar cell consists of a light absorber, sandwiched between two metals with dissimilar work functions. Carrier-selective contacts (CSC’s), which are ubiquitous in modern solar cells, are added to improve the electrical performance. Solar cells require asymmetric carrier transport within the cell, which can be effected via electrostatic and/or effective fields, and CSC’s augment the asymmetry by selectively transporting holes to one contact, and electrons to the other contact.
The proper design and implementation of a CSC is crucial, as the performance, lifetime, and/or cost reduction of a solar cell can be hampered by a single interface or layer. A framework, consisting of eight core requirements, was developed from first-principles to evaluate the effectiveness of a given CSC. The framework includes some requirements which are well-recognized, such as the need for appropriate band offsets, and some requirements which are not well-recognized at the moment, such as the need for effective valence/conduction band density of states matching between the absorber and CSC.
The application of the framework to multiple silicon-based and MHP-based CSC’s revealed the difficulties of effectively designing and implementing a CSC. A poly(3-hexylthiophene)/c-Si heterojunction was found to be a near ideal hole-selective contact (HSC). Three metal oxide/c-Si heterojunctions initially expected to yield comparable electron-selective contacts (ESC’s), titanium dioxide/c-Si (TiO2/c-Si), zinc oxide/c-Si (ZnO/c-Si), and tin dioxide/c-Si (SnO2/c-Si), were instead discovered to be widely different. The TiO2/MHP heterojunction was found to be a moderately ideal ESC, and the nickel oxide/MHP (NiOX/MHP) heterojunction is expected to be a good HSC. If interfacial lead di-iodide (PbI2) is intentionally or unintentionally deposited at the interfaces of a MHP solar cell, it is expected to be detrimental to the operation of the NiOX/MHP HSC, but not to the TiO2/MHP ESC.
Tegfalk, Elin. "Application of machine learning techniques to perform base-calling in next-generation DNA sequencing." Thesis, KTH, Tillämpad fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280487.
Повний текст джерела