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Dissertations / Theses on the topic 'Velocity plan'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Fouari, Aziz. "Contribution à l'étude de la diffusion de la chaleur en aval d'une source linéaire placée dans un jet plan turbulent." Rouen, 1986. http://www.theses.fr/1986ROUES013.

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Etude expérimentale du champ de vitesse moyenne et des fluctuations de vitesse, des champs de température moyenne et de fluctuations de température. Comparaison avec d'autres écoulements turbulents (couche limite turbulente, turbulence de grille, écoulement de conduite). Modèle physique basé sur le comportement relatif du sillage instantané et du sillage moyen décrivant les deux zones du processus de diffusion dans le cas de la couche limite turbulente et le jet plan turbulent

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2

Ступак, Олександр Юрійович. "Кінематичний аналіз плоского важільного механізму програмними засобами(робота)". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/29553.

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У наш час завдання кінематичного аналізу механізмів найчастіше вирішуються графічними або аналітичними методами. З розвитком мов програмування та можливостей відповідних середовищ розробки стає можливою реалізація кінематичного аналізу плоских важільних механізмів програмними методами. Запропонована реалізація являється комбінованим графоаналітичним методом, оскільки аналітичне рішення засноване на графічних побудовах та рішенні відповідних геометричних задач. За допомогою мови програмування Processing реалізовано програмне забезпечення для кінематичного аналізу простих важільних механізмів. К

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3

Cabrera, Gomez Jose Julian. "Velocity-dip analysis in the plane-wave domain." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30604.

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Plane-wave decomposition and slant stack transformation have recently gained much interest as viable routes to perform a variety of prestack processing tasks, such as velocity estimation, migration, filtering, deconvolution, and velocity inversion. To further complement the current advances, the problem of earth model parameter estimation and prestack structural imaging are addressed in this work. Unlike existing methods, the algorithms presented here make a novel and systematic use of the plane-wave domain to determine migration and interval velocities, interface dip angles and common-shot ga

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4

Collins, Justin Andrew. "Velocity and free surface measurements of free plane jets." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17888.

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5

Windholtz, Timothy Nolan. "Plane-Strain Formability of Sheet Metal at High Velocity." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332509672.

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6

Buono, Jared. "Assessing the Ecohydrologic Consequences of Woody Plant Encroachment." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195347.

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This three part study attempted to enhance our understanding of vegetation change and its potential effects on ecohydrology in drylands. The first study developed a method to measure the velocity of shallow overland flow. Under rainfall simulation, dye tracers were applied to runoff and photographed to calculate mean surface velocity. Results showed this approach was a significant improvement explaining 13% more of the variation in mean velocity compared to traditional methods. Results from the first study were used to compare hydraulic parameters on shrub- and grass-dominated plots in the se

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7

Jiao, Junru. "Residual migration velocity analysis in the plane wave domain : theory and applications /." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3023551.

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8

Styles, Julie M. "A wind tunnel study of the velocity field above a model plant canopy." [Canberra] : CSIRO Land and Water, 1997. http://nla.gov.au/nla.arc-13482.

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Thesis (B.Sc. (Honours)) - Australian National University, 1997.<br>Title from title screen (viewed on May 20, 2002). "A thesis submitted in partial fulfilment of the requirements for the Degree of Bachelor of Science (Honours)"--Title screen. Bibliography: p. 64-66. Available full text via the internet.

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9

Salamanca, Gabriel Enrique Dicelis. "Estudo integrado da camada de basalto em Bebedouro - SP, Bacia do Paraná: relocalização dos sismos induzidos por poços tubulares." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-10082011-215956/.

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Dicelis, G. E., Estudo Integrado da Camada de Basalto em Bebedouro SP, Bacia do Paraná: Relocalização dos sismos induzidos por poços tubulares, 2011. Dissertação de Mestrado Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, SP. A partir de 2004, a população do distrito de Andes, Bebedouro (SP), passou a sentir pequenos tremores de terra. Uma rede sismográfica instalada em 2005 mostrou que os sismos locais são induzidos por poços tubulares profundos usados para irrigação de lavouras (Assumpção et al., 2007). Neste projeto de pesquisa foi melhorada a locali

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10

Harsha, Senusi Mohamed. "Interpretation of Southern Georgia coastal plain velocity structure using refraction and wide-angle reflection methods." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/25886.

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11

Zhou, Yu. "Simulation of High-velocity Penetration for Rigid Projectile into Plain Concrete Target using Discrete Element Method." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31325.

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Penetration of high velocity is of concern for both civilian and military research for decades, and computerized simulation is the scholarâ s focus in recent years. This study presents a study on the Discrete Element Method (DEM) simulation of plain concrete targetâ s behavior under high-velocity penetration of rigid projectile. In this thesis, different types of research works including empirical, analytical and numerical methods in penetration by the previous scholars were carefully reviewed. A DEM-based concrete model was established by using software PFC3D. The major micro-variables o

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12

Tetzlaff, Gerd, and Uwe Hoppmann. "Die Leistung von AEOLUS II in Abhängigkeit von mittlerem Windprofil und Turbulenz im Bereich der Rotorfläche." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212831.

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Synchrone Messungen der Windgeschwindigkeit und die Leistung von Windkraftanlagen dienen der Ermittlung der Kennlinien der Anlagen. Die existierenden Vorschriften zur Vermessung enthalten bezüglich der Strömungseigenschaften des Windes nahezu keine Spezifikationen. Diese sind jedoch notwendig, um die erreichbare Genauigkeit und Repräsentativität der vermessenen Kennlinie zu quantifizieren. Messungen am Standort der AEOLUS II-Anlage in Wilhelmshaven dienten dazu, bei einer Anlagenvermessung die Eigenschaften der Strömung und die Kennlinie gemeinsam zu untersuchen. Es wurde gefunden, daß die Str

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13

Sushanta, Mitra. "Breakup Process of Plane Liquid Sheets and Prediction of Initial Droplet Size and Velocity Distributions in Sprays." Thesis, University of Waterloo, 2001. http://hdl.handle.net/10012/931.

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Spray models are increasingly becoming the principal tools in the design and development of gas turbine combustors. Spray modeling requires a knowledge of the liquid atomization process, and the sizes and velocities of subsequently formed droplets as initial conditions. In order to have a better understanding of the liquid atomization process,the breakup characteristics of plane liquid sheets in co-flowing gas streams are investigated by means of linear and nonlinear hydrodynamic instability analyses. The liquid sheet breakup process is studied for initial sinuous and varicose modes of di

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14

Marsden, Katelyn Randi Lee. "Cerebral blood flow velocity : does it play a role in symptom exacerbation during exercise in concussed athletes?" Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45239.

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Exercise frequently results in exacerbation of symptoms following a sports-related concussion (SRC). However, the mechanism(s) behind this phenomenon has yet to be determined. It is possible that an inability to regulate cerebral blood flow (CBF) may lead to over-perfusion, and thus cause the exacerbation of symptoms seen during exercise. It was hypothesized that: 1) CBF velocity during exercise will be greater in SRC. 2) Severity of symptoms will be correlated with CBF velocity during exercise and 3) day-to-day variability in CBF velocity will be greater in SRC compared to control subjects. S

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15

Riener, Manuel [Verfasser], and Henrik [Akademischer Betreuer] Beuther. "The detailed velocity structure and distribution of 13CO emission in the Galactic plane / Manuel Riener ; Betreuer: Henrik Beuther." Heidelberg : Universitätsbibliothek Heidelberg, 2020. http://d-nb.info/121424291X/34.

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16

Thakur, Sandeep. "Cleaning flax fibre; extracting and identifying antimicrobials and measuring water absorption of plant stems." ASABE-CSBE Joint conference 2014, Montreal, 2014. http://hdl.handle.net/1993/30686.

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Decorticated flax contains a significant amount of shive content, which limits applications of flax fibre. Separation of shives from the fibre is essential to improve the quality of flax fibre. Pneumatic method and a Sorter were implemented to meet the above objective. Terminal velocities of individual flax fibre and shive particles were investigated and their width, length, and mass were recorded. A sorting method was used for separation of short and long fibre for two grades of fibre: Grade 1 and Grade 2, with initial fibre purities of 51% and 15%, respectively. The ranges of terminal veloci

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17

Fimiani, Fosca. "Study of the calibration method of pressure-velocity probes and its application in a field of progressive plane waves." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10817/.

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This dissertation presents a calibration procedure for a pressure velocity probe. The dissertation is divided into four main chapters. The first chapter is divided into six main sections. In the firsts two, the wave equation in fluids and the velocity of sound in gases are calculated, the third section contains a general solution of the wave equation in the case of plane acoustic waves. Section four and five report the definition of the acoustic impedance and admittance, and the practical units the sound level is measured with, i.e. the decibel scale. Finally, the last section of the cha

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18

Worcester, Katherine Sara. "EFFECTS OF INERTIAL LOAD ON SAGITTAL PLANE KINEMATICS DURING FLYWHEEL-BASED RESISTANCE TRAINING SQUATS." UKnowledge, 2018. https://uknowledge.uky.edu/khp_etds/57.

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Background: Training to increase muscular power is essential for improving athletic performance in most sports. Weight training (WT) is a common means for training muscular power. Another modality, flywheel resistance training (FRT), may be superior for improving muscular power. However, few studies have examined if FRT is kinematically similar to WT, or if FRT kinematics change with increasing inertial load. The purposes of this study were to determine how sagittal plane joint kinematics are affected by increasing inertial load during FRT squats, and to determine how FRT squat joint kinematic

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19

Bellec, Morgane. "Études du couplage entre turbulence et gradient de température pour l'intensification des transferts de chaleur dans les récepteurs solaires à haute température." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0005/document.

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Une voie prometteuse pour améliorer le rendement des centrales solaires à tour consiste à chauffer de l'air pressurisé à haute température afin d'alimenter un cycle thermodynamique de Brayton. Pour cela, il est indispensable de concevoir des récepteurs solaires performants,permettant de forts transferts de chaleur vers le fluide. Le développement de tels récepteurs passe par une compréhension fine de leurs écoulements internes. Il s'agit d'écoulements complexes, combinant de hauts niveaux de turbulence et un fort gradient de température entre la paroi irradiée par le flux solaire concentré et

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20

Kanaki, Kalliopi. "Electric Field and Drift Characteristics Studies for the Multiwire Chambers of the Third Plane of HADES." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-29306.

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Aim of this report is the investigation of suitable operational conditions for the drif{}t chambers MDC III installed in the HADES setup. The simulations performed showed that operating the drif{}t chambers in a mode with nearly constant electron drif{}t velocity in a predominant part of the cell allows a more precise and fast tracking. This is particularly important for electrons and positrons; here the invariant dilepton mass must be reconstructed with high precision to get a resolution of $\Delta M/M\approx 1\%$ for the $\omega$ and $\phi$ mass peaks and thus a chance to verify also small i

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21

Kanaki, Kalliopi. "Electric Field and Drift Characteristics Studies for the Multiwire Chambers of the Third Plane of HADES." Forschungszentrum Rossendorf, 2003. https://hzdr.qucosa.de/id/qucosa%3A21758.

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Aim of this report is the investigation of suitable operational conditions for the drif{}t chambers MDC III installed in the HADES setup. The simulations performed showed that operating the drif{}t chambers in a mode with nearly constant electron drif{}t velocity in a predominant part of the cell allows a more precise and fast tracking. This is particularly important for electrons and positrons; here the invariant dilepton mass must be reconstructed with high precision to get a resolution of $\Delta M/M\approx 1\%$ for the $\omega$ and $\phi$ mass peaks and thus a chance to verify also small i

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22

Coelho, Fernando José Vinhas Sousa. "Medição da velocidade de chama plana laminar de misturas metano/ar e gás natural/ar utilizando o método de fluxo de calor." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/103804.

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A velocidade de queima laminar adiabática de reações de combustão é um parâmetro chave, relacionado à cinética química do combustível, a qual define características importantes como a forma e a faixa de estabilidade de uma chama. Nos últimos anos, um grande esforço vem sendo direcionado para a determinação precisa desse parâmetro para diferentes combustíveis, porém a grande diversidade de técnicas e metodologias de medição existente acarreta em uma grande dispersão entre os resultados encontrados na literatura. Dentre as várias técnicas disponíveis, o método do fluxo de calor destaca-se por fo

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23

Castro, Alfredo José Alvim de. "Análise experimental de velocidade crítica em elemento combustível tipo placa plana para reatores nucleares de pesquisa." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/85/85133/tde-23052017-160724/.

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Os elementos de combustível de um reator nuclear de pesquisa tipo MTR (\"Material Testing Reactor\") são, em sua grande maioria, formados por placas de combustível revestidas com alumínio contendo no cerne silicileto de urânio (U3Si2) disperso em matriz de alumínio. Essas placas possuem espessura da ordem de milímetros e comprimentos muito maiores em relação à sua espessura. Elas são dispostas paralelamente no conjunto que forma o elemento combustível, de maneira a formar canais entre elas com poucos milímetros de espessura, por onde escoa o fluido de refrigeração (água leve ou água pesada). E

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24

Tetzlaff, Gerd, and Uwe Hoppmann. "Die Leistung von AEOLUS II in Abhängigkeit von mittlerem Windprofil und Turbulenz im Bereich der Rotorfläche." Universität Leipzig, 1996. https://ul.qucosa.de/id/qucosa%3A15043.

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Synchrone Messungen der Windgeschwindigkeit und die Leistung von Windkraftanlagen dienen der Ermittlung der Kennlinien der Anlagen. Die existierenden Vorschriften zur Vermessung enthalten bezüglich der Strömungseigenschaften des Windes nahezu keine Spezifikationen. Diese sind jedoch notwendig, um die erreichbare Genauigkeit und Repräsentativität der vermessenen Kennlinie zu quantifizieren. Messungen am Standort der AEOLUS II-Anlage in Wilhelmshaven dienten dazu, bei einer Anlagenvermessung die Eigenschaften der Strömung und die Kennlinie gemeinsam zu untersuchen. Es wurde gefunden, daß die Str

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25

SAKAI, Yasuhiko, Nobuhiko TANAKA, and Takehiro KUSHIDA. "On the Development of Coherent Structure in a Plane Jet (Part1, Characteristics of Two-Point Velocity Correlation and Analysis of Eigenmodes by the KL Expansion)." The Japan Society of Mechanical Engineers, 2006. http://hdl.handle.net/2237/9011.

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26

Abtahi, Seyed Ali. "Ultrafast Laser Sampling of a Plant Tissue and ion Conductivity Measurement for Investigation of Light Stress Generation Mechanisms." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc31522/.

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In this study we applied ultra-short laser pulses on a biological sample (Arabidopsis), in order to cut it precisely in a square pattern and subsequently use it for studying stress generation mechanisms. For this purpose, we utilized femtosecond laser pulses at 100 fs pulse width and 80 MHz repetition rate. We took two processing parameters into consideration such as laser power, laser exposure time which is related to the stage speed. Therefore, we were able to find the laser optimum conditions for ablation of biological tissues. The mutant and wildtype (control) obtained from laser cutting w

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27

CASTRO, ALFREDO J. A. de. "Análise experimental de velocidade crítica em elemento combustível tipo placa plana para reatores nucleares de pesquisa." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28022.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-17T17:27:31Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-17T17:27:31Z (GMT). No. of bitstreams: 0<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>Os elementos de combustível de um reator nuclear de pesquisa tipo MTR (\"Material Testing Reactor\") são, em sua grande maioria, formados por placas de combustível revestidas com alumínio contendo no cerne silicileto de urânio (U3Si2) disperso em matriz de alumínio. Essas placas possuem espessura da ordem de milímetros e comprimentos muito maiores

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28

Farkas, I., A. Aszodi, J. Elter, et al. "The European project FLOMIX-R: Description of the experimental and numerical studies of flow distribution in the reactor primary circuit(Final report on WP 3)." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28628.

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The flow distribution in the primary circuit of the pressurized water reactor was studied with experiments and Computational Fluid Dynamics (CFD) simulations. The main focus was on the flow field and mixing in the downcomer of the pressure vessel: how the different factors like the orientation of operating loops, the total loop flow rate and the asymmetry of the loop flow rates affect the outcome. In addition to the flow field studies the overall applicability of CFD methods for primary circuit thermal-hydraulic analysis was evaluated based on the CFD simulations of the mixing experiments of t

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29

Farkas, I., A. Aszodi, J. Elter, et al. "The European project FLOMIX-R: Description of the experimental and numerical studies of flow distribution in the reactor primary circuit(Final report on WP 3)." Forschungszentrum Rossendorf, 2005. https://hzdr.qucosa.de/id/qucosa%3A21689.

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The flow distribution in the primary circuit of the pressurized water reactor was studied with experiments and Computational Fluid Dynamics (CFD) simulations. The main focus was on the flow field and mixing in the downcomer of the pressure vessel: how the different factors like the orientation of operating loops, the total loop flow rate and the asymmetry of the loop flow rates affect the outcome. In addition to the flow field studies the overall applicability of CFD methods for primary circuit thermal-hydraulic analysis was evaluated based on the CFD simulations of the mixing experiments of t

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30

Lismonde, Baudouin. "Champ de vitesse au bord d'attaque et dans le spot laminaire d'un écoulement sur une plaque plane." Grenoble 1, 1987. http://www.theses.fr/1987GRE10074.

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Calcul numerique des champs de vitesse, de pression et de temperature dans la zone pres du bord d'attaque ou il faut utiliser une approximation d'ordre 3 de la couche limite. Mesure des trois composantes de la vitesse de l'ecoulement perturbe par un microjet instantane traversant la couche limite laminaire

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31

Hill, Michelle Denise. "Damage resistance and tolerance investigation of carbon/epoxy skinned honeycomb sandwich panels." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/10072.

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This thesis documents the findings of a three year experimental investigation into the impact damage resistance and damage tolerance of composite honeycomb sandwich panels. The primary area of work focuses on the performance of sandwich panels under quasi-static and low-velocity impact loading with hemispherical and flat-ended indenters. The damage resistance is characterised in terms of damage mechanisms and energy absorption. The effects of varying the skin and core materials, skin thickness, core density, panel boundary conditions and indenter shape on the transverse strength and energy abs

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Fu, Li. "Rhéologie des polymères dans les contacts confinés : tribologie des interfaces étudiées par un nouveau dispositif couplant FRAPP et nanotribologie." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE030/document.

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Ce travail porte sur le développement d’une nouvelle technique expérimentale dédiée à l’étude de la rhéologie mise en jeux lors du glissement d’une pointe rigide sur une surface de polymère. Ce travail s'est déroulé progressivement de l'échelle mésoscopique vers l'échelle nanométrique. Pour cette dernière, la zone ciblée est la zone interfaciale confinée et cisaillée.Pour mettre en évidence les comportements de la zone cohésive, nous avons étudié un système de réseaux interpénétrés de polymères (RIPs) CR39-PMMA. Grâce à leurs propriétés ajustables, nous pourrons utiliser les RIPs sont utilisés

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33

Viglioni, Humberto Henrique de Barros. "Dinâmica de vórtices em superfícies com aplicações ao problema de dois vórtices no toro plano." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/45/45132/tde-03042017-161053/.

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Este trabalho apresenta uma dedução das equações para a dinâmica de vórtices em superfícies utilizando argumentos físicos e balanço de momento, obtendo o resultado já conhecido devido a Boatto/Koiller e Hally. Na primeira parte, elaboramos uma releitura da contribuição de diversos pesquisadores incluindo, além dos já citados, o trabalho de Marchioro e Pulvirenti sobre a propriedade de localização para a equação de Euler e também a importante contribuição de Flucher e Gustafsson no que diz respeito à determinação da função de Green e função de Robin hidrodinâmicas em domínios do plano. Na seg

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34

Hissey, Stephen. "Comparison Of The Physical, Physiological And Perceptual Demands Of Small-Sided Games And Match Play In Professional Football Players." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2014. https://ro.ecu.edu.au/theses/1423.

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The physical and technical requirements of a range of small-sided football (soccer) games (SSGs) have previously been examined in order to compare their requirements to competitive match play. SSGs are used to combine the technical, tactical and physical components of normal match play in training in order to make the training sessions specific to football. However, most previous research has focused on youth players and it is known that the playing patterns, and thus session outcomes, are different for elite players. Consequently, research examining elite players is required in order to impro

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35

Kokkalis, Efstratios. "Fluid dynamic assessments of spiral flow induced by vascular grafts." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/5b96492f-983f-4baa-8e48-20da6939e65c.

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Peripheral vascular grafts are used for the treatment of peripheral arterial disease and arteriovenous grafts for vascular access in end stage renal disease. The development of neo-intimal hyperplasia and thrombosis in the distal anastomosis remains the main reason for occlusion in that region. The local haemodynamics produced by a graft in the host vessel is believed to significantly affect endothelial function. Single spiral flow is a normal feature in medium and large sized vessels and it is induced by the anatomical structure and physiological function of the cardiovascular system. Grafts

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36

Čamaj, Peter. "Stabilizační a autopilotní systém pro RC model letadla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221051.

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The master thesis deals with design and realization of stabilizing and autopilot system, which is used in radio controlled model planes. The thesis contains a proposal of hardware platform, which is able to control the plane model based on data measured from a sensor system. Moreover, this thesis describes a software implementation of individual modules, which is measured the onboard values. The basic principles of stabilization and autonomous flight control are also summarized. In conclusion, the system is subjected to flight tests.

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37

Tounsi, Rami. "Comportement des structures en nids d'abeilles sous sollicitations dynamiques mixtes compression/cisaillement et effet de l'orientation des cellules." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2014. http://tel.archives-ouvertes.fr/tel-01002421.

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Les nids d'abeille d'aluminium combinent légèreté et grande capacité d'absorption d'énergie. Ils sont alors de plus en plus utilisés dans les secteurs du transport (automobile, aéronautique ...) pour contribuer conjointement à l'allègement structural et à la sécurité. Dans cette thèse, le comportement à l'écrasement des nids d'abeille est étudié en tenant compte de l'effet combiné de l'angle d'orientation dans le plan des cellules, de l'angle de chargement et de la vitesse de sollicitation, que la littérature ne relate pas. Un dispositif de chargement mixte compression/cisaillement est conçu p

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Guo, Bowen. "Superresolution Imaging Using Resonant Multiples and Plane-wave Migration Velocity Analysis." Diss., 2017. http://hdl.handle.net/10754/625420.

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Seismic imaging is a technique that uses seismic echoes to map and detect underground geological structures. The conventional seismic image has the resolution limit of λ/2, where λ is the wavelength associated with the seismic waves propagating in the subsurface. To exceed this resolution limit, this thesis develops a new imaging method using resonant multiples, which produces superresolution images with twice or even more the spatial resolution compared to the conventional primary reflection image. A resonant multiple is defined as a seismic reflection that revisits the same subsurface lo

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Jiao, Junru 1959. "Residual migration velocity analysis in the plane wave domain : theory and applications." 2001. http://hdl.handle.net/2152/10600.

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Huang, Yu-Chih, and 黃有志. "Site Effect and Near Surface S Wave Velocity Structure in Lan-Yang Plain." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/10227474040060202164.

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碩士<br>國立中央大學<br>地球物理研究所<br>91<br>The purpose of this study is trying to understand the site effect and to compute near surface S wave velocity structure of the Lan-Yang plain. We used very dense microtremor measurements to study the site effect, and used portable seismic array to estimate the near surface sediment''s S wave velocity structure. In this study, we performed 354 microtremor measurements, and analyzed site effect by applying single station spectral ratio method (Nakamura, 1989). After that, we conducted 9 portable seismic arrays. The analysis procedures can be categorized as (1)

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Song-Nan, Tsau, and 曹松楠. "The Relationship Between Ultrasonic Velocity and Metallography of Boiler Tube of Power Plane." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/22182245601002509084.

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碩士<br>國立臺灣科技大學<br>機械工程研究所<br>84<br>For developing new evaluation technology of deteriation of boiler tube the relationships between ultrasonic velocity and deterioration of boiler tube must be find. In this study, the image analysis technology was used to quantify metallography characteristics of new, creeping tested & used boiler tubes that were cutted from characteristics (velocity & attenuation) and hardness was tested,too.TPC Da-Lin power station. Ultrasonic the experiment results,the r

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Yang, Che-Ming, and 楊哲銘. "Applications of velocity-dependent friction law on catastrophic plane failure and accretionary wedge." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/9837rn.

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博士<br>國立中央大學<br>應用地質研究所<br>105<br>The friction coefficient of a fault gouge or sliding plane dominates the fault dynamics and kinematics of a landslide. However, the friction coefficient and behavior of fault gouges or sliding planes are influenced by the slip rate, displacement, normal stress, pore pressure, water content, temperature, mineral content, particle size, and shear structure. We performed a series of rotary shear tests under different experimental conditions from low to high velocity to establish the velocity-dependent friction law. Accordingly, the friction coefficient can be eva

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Chen, Mei-Ling, and 陳美伶. "Sediment Velocity Structures in the Taiwan Strait and the Coastal Plain of west Taiwan." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/05196469270688784417.

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碩士<br>國立中央大學<br>地球物理研究所<br>95<br>The method of reflection seismic imaging displays subsurface structures in time rather than in depth. One therefore needs to know the 3-D distribution of subsurface velocity in order to convert seismic time into depth and obtain 3-D subsurface depth structures. I use borehole and seismic data to compute a 3-D sediment velocity structure in the Taiwan Strait and the coastal plain in west Taiwan by using V0-k method. The V0-k method assumes that velocity increases with increasing depth in a linear form, in which V0 is the initial velocity at the seabed or on the

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Pan, Min-yan, and 潘旻諺. "Ultrasonic Estimation of Vector Blood Velocity using Speckle Tracking with Coherent Plane Wave Compounding Imaging." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/83969428745442844327.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>98<br>Doppler technique is commonly used in medical ultrasound system. However, conventional Doppler is limited by the flow angle and the maximum detectable velocity. This research was designed to combine the high frame rate imaging system and the speckle tracking technique to provide accurate estimation of the vector velocity. The high accuracy of speckle tracking technique depends on high image quality and high frame rate. In this study, we investigate the coherent plane wave compounding imaging approach (CPWC) to improve the efficacy of blood velocity estimation i

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Su, Chao-wei, and 蘇超偉. "Velocity and temperature distributions of turbulent plane jet interaction with the nonlinear oppositive progressive wave." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51758174594641110236.

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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>98<br>The present extends analytical results obtained by Hwung et al. (1981) and considers non-linearity of waves to study variation horizontal velocity, temperature distribution induced by interaction of 2-D plane jet and waves. On the steady state, the nonlinear wave is considered as external force in motion equations, property of momentum conservation of jet flow, and radiation stress are applied to analyze interaction of waves- jet flow in arbitrary profile. The scale function ε1α1(x), ε2α2(x) between variation function f (x,y)and velocity distribution can a

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KADIAN, SATISH KUMAR. "HYDROULIC ANALYSIS AND MODELLING OF SMALL HYDRO POWER: A CASE STUDY OF PLANT AT GOGRIPUR, KARNAL." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16387.

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Chapter 1 deals with introduction of small hydropower plant with renewable potential and achievement in India as well as hydro-power potential of India. It also deals with major elements of a hydro system i.e. basic element, turbine efficiency, drive system, and control system. Chapter 2 deals with literature review of hydropower projects, there cost effectiveness, life cycle, Performance analysis and study of renewal energy using micro hydro turbine. It shows the detail summary of various research paper in a brief way, including their results. Chapter 3 gives us the Idea about Head and Flow a

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Lin, Che-Min, and 林哲民. "Shallow velocity structure, site effect and 3D seismic wave simulation of the western plain of Taiwan." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/7394aq.

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博士<br>國立中央大學<br>地球物理研究所<br>97<br>The shallow S-wave velocity structures and site effect of the western plain of Taiwan were respectively estimated by the microtremor array measurements and dense station measurements. The complete 3D velocity model was constructed with the shallow structures to simulate the seismic wave propagation in the western plain. Seven microtremor arrays estimated the S-wave velocity structures from the surface to a depth of 3 km. The velocities at near-surface were very slow and increased gradually. And several interfaces with substantial S-wave velocity variations were

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CAMMAROTA, VALENTINA. "Random Processes in Hyperbolic Spaces. Hyperbolic Brownian Motion and Processes with Finite Velocity in the Hyperbolic Plane." Doctoral thesis, 2010. http://hdl.handle.net/11573/419111.

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Wang, K. D., and 王凱達. "Low Velocity Impact Response of Plain-Weaved and Double-Walled GFRP Composites Utilized A Drop-Weight Impact Tower." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/24594329712814273314.

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碩士<br>國立成功大學<br>航空太空工程學系<br>88<br>The purpose of this thesis is to study the impact response and damage development of plain-weaved and Double-wall GFRP composites. The plain-weaved contain two different layers which are 8-plys and 11-plys, and double-walled include two types which are Parabeam-3mm and Parabeam- 6mm. We are using a Drop-Weight Impact Tower with a hemispherical tup in ascending impact Energy to do a series experiments for four laminates respectively. Utilizing the force Sensor (PCB) and data acquisition system (NI), we can get the impact force and absorbed energy histories in d

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Li, Zong-Heng, and 李宗恆. "Velocity and temperature distributions of turbulent plane jet interaction with the nonlinear oppositive progressive gravity wave and ocean current." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/97288184079624127190.

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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>99<br>The variation of velocity and temperature distribution in arbitrary profile along the centerline in turbulent which encounters non-linearity regular progressive gravity wave and steady uniform flow right in front are investigated analytically and verified by existing experiments. Firstly, the action of periodic waves and current are incorporated into the equation of motion as an external force and applied radiation stress for evaluating the velocity distribution over arbitrary lateral cross section. Based on the momentum exchange after the interaction betw

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