Dissertations / Theses on the topic 'Longitudinal dynamics'
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Sieber, Jan. "Longitudinal dynamics of semiconductor lasers." Doctoral thesis, [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963267795.
Full textKliment, Linda K. "Dynamics of longitudinal wake vortices." Diss., Wichita State University, 2009. http://hdl.handle.net/10057/2554.
Full textThesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Aerospace Engineering
Harris, John Richardson. "Longitudinal dynamics of an intense electron beam." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2906.
Full textThesis research directed by: Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Koscielniak, S. R. "Longitudinal beam dynamics studies on the ISIS synchrotron." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379845.
Full textHaider, Muhammad Rezaul. "Longitudinal Thermal and Solute Dynamics in Regulated Rivers." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/6870.
Full textHamersma, H. A. (Herman Adendorff). "Longitudinal vehicle dynamics control for improved vehicle safety." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/40829.
Full textDissertation (MEng)--University of Pretoria, 2013.
gm2014
Mechanical and Aeronautical Engineering
unrestricted
Tian, Kai. "Study of longitudinal dynamics in space-charge dominated beams." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8063.
Full textThesis research directed by: Dept. of Electrical and Computer Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Zhang, Elizabeth Y. "Microinvasive probes for the longitudinal interrogation of neural dynamics." Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/121645.
Full textThesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 91-99).
Chronically implantable probes are critical to investigating the neural dynamics of functions such as learning, motivation, and movement control over the extended timescales at which they develop. Proven functional lifetimes of over a year are also necessary for eventual clinical use in human patients to help monitor and treat certain neurological diseases. Existing electrochemical probes experience signal degradation and have not been reported to remain viable after 4 months of implantation. Chronic inflammatory and foreign body responses due to large implanted device size and mechanical mismatch are believed to be major contributors to signal degradation. In the first half of this thesis, I present the design of parylene-coated carbon fiber electrodes for electrochemical measurements that reduces implanted footprint by 2 orders of magnitude and flexural rigidity by 3 orders of magnitude compared to state-of-art electrochemical probes.
The parylene-coated carbon fiber electrodes induced minimal chronic inflammatory responses that were not significantly distinguishable from unpenetrated control tissue. The novel microinvasive probes demonstrated stable subsecond measurement of extracellular dopamine neurochemicals for over 1 year. The second half of this thesis explores the effect of axial vibration during probe implantation to reduce experienced insertion forces. The greater compliance of microinvasive probes often preclude their successful implantation, particularly in deep brain regions. Current approaches temporarily encase probes in larger and stiffer guide tubes, for example, but these methods induce undesirable acute trauma that compromise long-term measurement performance. Dynamic implantation was found to significantly reduce in vitro insertion forces and significantly reduce acute in vivo tissue trauma hen compared to conventional static implantation.
The extended chronic functionality of the parylene-coated carbon fiber electrodes and the reduced insertion forces generated during dynamic implantation enable future study of neuroplastic functions and the progression of neurodegenerative diseases in awake and behaving animals, and the findings further advance microinvasive probes towards clinical human use.
by Elizabeth Y. Zhang.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Adhynugraha, Muhammad Ilham. "Longitudinal dynamics of wing in ground effect craft in waves." Thesis, Cranfield University, 2017. http://dspace.lib.cranfield.ac.uk/handle/1826/13095.
Full textDassanayake, Achala Viomy. "Machining dynamics and stability analysis in longitudinal turning involving workpiece whirling." Thesis, [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1817.
Full textZeni, Daniel. "Longitudinal dynamics modeling and handling qualities of a conventional jet aircraft." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8530/.
Full textRaffington, Laurel. "Socioeconomic disparities in children’s cognitive development: Longitudinal dynamics and stress mechanisms." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19217.
Full textIndividual differences in cognitive development in childhood vary along gradients of socioeconomic status (SES). Yet, research has largely ignored longitudinal dynamics, despite evidence that SES, especially income, also changes over time. Furthermore, fairly little is known about the mechanisms by which SES explains cognitive disparities. Lower SES environments are marked by high chronic stress exposure, which has led to the hypothesis that dysregulation of the stress response system resulting in altered cortisol secretion mediates disparities in cognition. This dissertation provides longitudinal evidence for the notion that family income gains and losses predict poor children’s cognitive development throughout later childhood (Paper I). Remarkably, children’s cognition also predicts their parents’ earning ability, indicating previously neglected bidirectional family dynamics. Moreover, this dissertation provides cross–sectional evidence for a stress mechanism involved in SES disparities of cognitive functioning. Both higher stress and lower income are associated with patterns of hypocortisolism in middle childhood (Paper II & III). Further, cognitive control skills may buffer against the embedding of stress exposure in diurnal cortisol secretion (Paper II). Lastly, cortisol hyporeactivity to stress found in low–income children is uniquely associated with their lower memory performance. Notably, this dissertation does not warrant environmentally– or genetically–mediated assumptions of causality. Future intervention studies should continue to explore whether facilitating family income gains, reducing stress exposure, normalizing cortisol secretion, or improving children’s stress coping by training cognitive control alleviates SES–related disparities in cognition.
Heffernan, Matthew Evan Bevly David M. "Simulation, estimation, and experimentation of vehicle longitudinal dynamics that effect fuel economy." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/HEFFERNAN_MATTHEW_41.pdf.
Full textLee, Changheon. "Dynamics of Advice Network and Knowledge Contribution: A Longitudinal Social Network Analysis." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/243117.
Full textWagner, Simon John, and simonjwagner@gmail com. "DERAILMENT RISK ASSESSMENT." Central Queensland University. Engineering, 2004. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20060720.100637.
Full textHawley, Lance. "Longitudinal dynamics of the therapy process during and following brief treatment for depression." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102983.
Full textThe purpose of this research was to evaluate established theories of depression vulnerability as well as theories of psychotherapy process, both during and following depression treatment. The research described in Chapter 2 examined several theories of the longitudinal relationship between depression and perfectionism during depression treatment, while considering the role of the therapeutic alliance. Longitudinal LDS analyses supported a "personality vulnerability" model of depression, in which perfectionism predicted the subsequent rate of depression change throughout treatment. Results indicate that patients with high levels of perfectionism experience less reduction in their depression scores throughout treatment. Furthermore, the strength of the therapeutic alliance significantly predicted the rate of change in personality vulnerability throughout therapy. The research described in Chapter 3 examined several theories of the longitudinal relationship between depression and stress following treatment termination. Results supported a "stress reactivity" model, in which stressful events led to elevations in the rate of depression change following therapy. Multigroup LDS analysis indicated that stress reactivity only occurred for patients who had been treated with medication, and not for those who had received psychotherapy.
These findings have several implications. First, comprehensive analyses of treatment efficacy can move beyond symptom reduction by examining mechanisms underlying treatment response using an appropriate statistical framework. The first paper demonstrates that an efficient route to symptom reduction involves establishing an adequate therapeutic alliance in order to target personality vulnerability. The second paper demonstrates that importance of evaluating treatment efficacy by considering whether a treatment leads to enduring change. Specifically, results indicate that the enduring effects of psychotherapy (in comparison to medication treatments) following treatment termination involves increased resiliency to stressful life events.
Dorais, Stephanie. "The Dynamics Of Resilience In A Centering Meditation: A Longitudinal Randomized Controlled Trial." W&M ScholarWorks, 2021. https://scholarworks.wm.edu/etd/1627407477.
Full textXu, Lei. "Magnetization Dynamics at Elevated Temperatures." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/311342.
Full textEckert, Jony Javorski 1988. "Análise comparativa entre os métodos de cálculo da dinâmica longitudinal em veículos." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264392.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: Dinâmica veicular é o estudo das interações entre o veículo, condutor e o ambiente bem como as reações de carga, sendo esta dividida em 3 grandes áreas: dinâmica longitudinal, vertical e lateral. Existem variações entre os métodos propostos pela literatura para o cálculo da dinâmica longitudinal do veículo, sendo que o objetivo deste trabalho é, por meio de simulações, compararem os resultados obtidos pelas diversas metodologias. Por meio de um modelo gerado com auxílio do programa de análise dinâmica de multicorpos Adams®, juntamente com o Simulink Matlab®, foram implementados os métodos de cálculo propostos pela literatura de forma a simular o comportamento de um veículo em função de uma demanda de potência gerada por meio do padrão de velocidades imposto pelos ciclos das normas brasileiras NBR6601 e NBR7024. Os resultados encontrados foram comparados por meio da correlação linear entre as curvas de torque resultantes do modelo dinâmico, possibilitando uma avaliação entre os resultados encontrados pelos diferentes métodos. Também foram avaliados o consumo de combustível, a influência da variação da massa do veículo e da estratégia de condução no comportamento dinâmico do veículo, bem como modelos complementares referentes a veículos híbridos e o efeito da adição de um modelo de embreagem no conjunto simulado
Abstract: Vehicular dynamics is the study of interactions between vehicle, driver and load reactions. The vehicular dynamics is divided into three areas: longitudinal, vertical and lateral. There are variations between the methods proposed in the literature to calculate the longitudinal dynamics of the vehicle. The purpose of this study is, through simulations; compare the results obtained by different methods. By means of a model generated by Adams® (Software of Multibody Dynamics Analysis) together with Simulink Matlab® were implemented the calculation methods proposed by literature to simulate the behavior of a vehicle according to a power demand resulting from the default speeds cycles required by Brazilian Standards NBR6601 and NBR7024. The results were compared using linear correlation between the couple curves resulting from the dynamic model, allowing an evaluation of the results reported by different methods. Were also evaluated: the fuel consumption and the influence of the mass vehicle variation, the driving strategy in the vehicle dynamic behavior, some complementary models of hybrid vehicles and the effect of add a clutch model
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
Islam, Zeenath Ul. "Statistical modelling and analysis of the infection dynamics of PRRSV in vivo infections." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29513.
Full textBohman, Love. "Director Interlocking and Firm Ownership : Longitudinal Studies of 1- and 3-Mode Network Dynamics." Doctoral thesis, Stockholms universitet, Sociologiska institutionen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-36774.
Full textAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript.
Martin, de Holan Pablo. "The dynamics of knowledge in international strategic alliances : a longitudinal study of service firms." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37775.
Full textMethodologically, this thesis utilizes a qualitative, longitudinal perspective, based on several cases of organizations in similar structural context but whose results after a few years of operation show large variances. The findings of this work show that the usefulness of knowledge for business firm (its value), is highly dependent on the life-cycle of the organization. Also, the types of knowledge mobilized varied also according to position in the life-cycle. Whereas younger, inexperienced organizations sought to transfer and develop knowledge, older organizations tried to prevent knowledge from dissipating. All these findings contribute to the creation of a contingent, evolutionary view of knowledge in business firms. In addition, the notion of knowledge consolidation (or effortful activities needed to maintain a piece of knowledge in the organization) is developed, and evidence is presented to support it.
Lyons, David J. "Context and complexity : a longitudinal study of motivational dynamics among South Korean university students." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6711/.
Full textActon, Bryan Patrick. "Working in Harmony: The Impact of Personality on the Short- and Long-Run Dynamics of Team Cohesion." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/78138.
Full textMaster of Science
Chou, Hsin-Hui. "Technological changes and business network dynamics : a longitudinal perspective from the optical recording media industry." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/technological-changes-and-business-network-dynamics-a-longitudinal-perspective-from-the-optical-recording-media-industry(6b61e609-5686-456c-b067-fd26286247f1).html.
Full textPereira, Danilo Carlos. "Dinamica não linear e controle de uma aeronave em voo longitudinal." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265379.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: Neste trabalho analisou-se a dinâmica não linear de uma aeronave em vôo longitudinal. Efetuou-se a análise do comportamento bifurcacional da aeronave F-8 ¿Cruzader¿. Na análise bifurcacional foi estudado o comportamento topológico desta aeronave tomando-se dois parâmetros de controle: a deflexão do profundor e a alteração da massa da referida aeronave. Ante a pesquisa desenvolvida, foi proposto um projeto de controle linear ótimo com o objetivo de estabilizar as oscilações do ângulo de ataque, considerando-se regiões criticas do comportamento não linear da aeronave. Adicionalmente, incluiu-se no modelo matemático a variação da velocidade longitudinal da aeronave, visto tratar-se de simulações numéricas em um túnel de vento virtual
Abstract: In this work it was analyzed the non linear dynamic of an aircraft taken onto longitudinal flight. It was done analysis of the bifurcacional behavior of the aircraft F-8 ¿Cruzader¿. In the bifurcational analysis was studied the topological behavior of this aircraft taken into account two parameters of control: the deflection of the elevator and the alteration of the mass of the related aircraft. In the face of the developed research, an optimum linear control project was proposed with the objective of stabilizing the oscillations of the angle-of-attack. Additionally, the variation of the longitudinal speed of the aircraft was included in the mathematic model in order to simulate the oscillatory movement of the aircraft considered, in a tunnel of virtual wind
Doutorado
Materiais e Processos de Fabricação
Mestre em Engenharia Mecânica
Bland, Simon Nicholas. "Plasma dynamics in aluminium wire array Z-pinch implosions." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342345.
Full textHandoko, Yunendar Aryo, and yunendar@inka web id. "INVESTIGATION OF THE DYNAMICS OF RAILWAY BOGIES SUBJECTED TO TRACTION / BRAKING TORQUE." Central Queensland University. Centre for Railway Engineering, 2006. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20070209.101959.
Full textSorgenfrei, Florian [Verfasser]. "Time-Resolved Jitter-Free Experiments at FLASH: From Longitudinal Coherence Studies to Nonlinear Dynamics / Florian Sorgenfrei." München : Verlag Dr. Hut, 2013. http://d-nb.info/1042308047/34.
Full textTorchinsky, Darius H. "Optical study of shear and longitudinal acoustic waves and complex relaxation dynamics of glass forming liquids." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45440.
Full textIncludes bibliographical references (p. 259-277).
The spectroscopic technique Impulsive Stimulated Scattering (ISS) was refined and used to study the complex structural relaxation dynamics of glass forming liquids, allowing both empirical modeling and testing of the predictions of the mode-coupling theory (MCT). Longitudinal and shear acoustic waves throughout much of the MHz frequency range, time-dependent thermal expansion on nanosecond and microsecond scales, and slower thermal diffusion were all monitored in real time. The data were used to construct complex longitudinal modulus spectra spanning from, 30 kHZ to 3 GHz, and complex shear modulus spectra from - 10 MHz to 1 GHz. In the liquid tetramethyl tetraphenyl trisiloxane, experiments which verified timetemperature superposition of its relaxation dynamics permitted construction of a master plot of scaled relaxation spectra in the entire temperature range studied. MCT predictions of power-law frequency dependencies of the high and low frequency wings of the loss modulus yielded a high-frequency exponent parameter in good agreement with the width of the non-exponential relaxation kinetics. The low-frequency exponent did not agree with the predicted value. In triphenyl phosphite, measurements of the measured shear relaxation spectrum over two decades in frequency revealed that it does not match the previously measured longitudinal spectrum, suggesting that different underlying degrees of freedom contribute to shear and compressional relaxation. Measurement of shear wave propagation as a function of temperature lent credence to the dominance of the temperature dependence of the transport by the instantaneous shear modulus. These measurements also call into question other relationships drawn between glass mechanical behavior and the supercooled liquid fragility. In work conducted collaboratively, the ISS technique was employed in singles hot measurements of liquid benzene under conditions of shock loading. The results indicate that benzene remains in a liquid state for at least 200 ns after the shock's arrival. ISS was also used to characterize both the thermal transport and mechanical properties of nanofluids.
(cont.) Finally, results of ISS acoustic measurements of thin films and their relationship with the study of glass forming liquids are briefly discussed.
by Darius H. Torchinsky.
Ph.D.
Vaillant, Julia. "Imbricated dynamics in times of fragile growth : individuals, families and household businesses in Madagascar, 1995-2005." Thesis, Paris 9, 2012. http://www.theses.fr/2012PA090068.
Full textIn developing countries, the complex interdependence of households, individuals and businesses makes the measurement of welfare dynamics challenging, especially over a long period, because economic activities are predominantly embedded in households. The context we have chosen, Madagascar between 1995 and 2005, is particularly interesting because it corresponds to an unprecedented period of growth interrupted only by a recession in 2002 due to a political crisis. Using urban, rural, cross-sectional and panel data, the three essays presented attempt to shed light on various aspects of welfare dynamics over a long period in Madagascar, with a special focus on the imbrication of productive activities, households and individuals. The first essay studies informal sector dynamics in Antananarivo with a special attention on its heterogeneous nature. The second measures the extent of the gender performance gap among informal entrepreneurs and explores the existence of gender-differentiated effects of sharing norms and the allocation of tasks within the household on the technical efficiency of enterprises. Finally, the third essay is a methodological contribution on the relevance of tracking movers in panel data collection in rural areas. Studying microenterprises within their family and social environment is necessary to fully grasp the constraints on productive activities. More research is necessary on the behavior and economic rationality of urban households. The lack of panel data on informal businesses limits what can be said on their demography, especially over a long period. There is a pressing need for innovative data collection devices which follow these production units over time
Granberg, Nils. "The dynamics of second language learning : a longitudinal and qualitative study of an adult's learning of Swedish." Doctoral thesis, Umeå universitet, Litteraturvetenskap och nordiska språk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-59857.
Full textdigitalisering@umu
Heigoldt, Matthias [Verfasser], and Stefan [Akademischer Betreuer] Karsch. "Temporal dynamics of the longitudinal bunch profile in a laser wakefield accelerator / Matthias Heigoldt ; Betreuer: Stefan Karsch." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1136270981/34.
Full textKlein, Marit [Verfasser]. "Optics Calculations and Simulations of Longitudinal Beam Dynamics for the Low-α Mode at ANKA / Marit Klein." München : Verlag Dr. Hut, 2012. http://d-nb.info/1028784295/34.
Full textGasparini, Ricardo Ferreira. "Dinâmica longitudinal de veículos pesados = forças resistivas e outros fatores de influência no consumo de combustível." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264373.
Full textDissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: O principal objetivo deste trabalho é estudar a interação de veículos comerciais com o meio e a influência de suas características dinâmicas no consumo de combustível. O primeiro passo é o levantamento dos parâmetros influentes na modelagem para o desempenho veicular, seja este baseado em métodos de energia, seja baseado em métodos de forças. As relações do veículo com o ambiente serão tratadas como aspectos influentes e incluídas no modelo de desempenho. As simulações e a modelagem final foram implementadas no programa GTDrive, software comercial. Conhecendo essas interações entre veículo e meio, e a influência destas interações no consumo de combustível, deseja-se propor uma nova abordagem no desenvolvimento de projetos automotivos para futuras aplicações em veículos comerciais, visando a redução do consumo de combustível no Brasil
Abstract: The main focus of this work is the study of interaction between commercial vehicle and the environment and also the influence of their dynamic characteristics in the fuel consumption. The first step of this work is to analyze the types of vehicle dynamic modeling based on energy and based on forces (Newton). The relationship between the vehicle and it.senvironment will be considered as influent aspects and should be included into vehicle dynamic modeling. By understanding this relationships and their influence in the fuel consumption it is possible to propose an approach to develop new automotive projects for future commercial vehicle applications focus on fuel consumption and taking into account the Brazilian reality
Mestrado
Dinâmica
Mestre em Engenharia Automobilistica
Leclercq-Samson, Adeline. "Estimation dans les modèles non-linéaires à effets mixtes : extensions de l'algorithme SAEM pour l'analyse de la dynamique virale sous traitement anti-VIH." Paris 6, 2006. http://www.theses.fr/2006PA066536.
Full textZhang, Hancheng. "SYNTHESIZING COOPERATIVE ADAPTIVE CRUISE CONTROL WITH SHARED AUTONOMY." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2542.
Full textLong, Jacob Andrew. "Time Dynamics and Stability of Political Identity and Political Communication." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595519865595447.
Full textLiere, Diederik Willem van. "Network horizon and the dynamics of network positions a multi-method multi-level longitudinal study of interfirm networks /." [Rotterdam] : Rotterdam : Erasmus Research Institute of Management (ERIM), Erasmus University Rotterdam ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/10181.
Full textLohano, Hari Ram. "Agricultural Growth and Poverty Dynamics in Rural Pakistan : A Longitudinal Survey in Sindh Province (1987/88 - 2004/05)." Thesis, University of Bath, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507773.
Full textTsourides, Kleovoulos (Kleovoulos Leo). "Visually grounded virtual accelerometers : a longitudinal video investigation of dyadic bodily dynamics around the time of word acquisition." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/65179.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis.
Includes bibliographical references (p. 105-110).
Human movement encodes information about internal states and goals. When these goals involve dyadic interactions, such as in language acquisition, the nature of the movement and proximity become representative, allowing parts of our internal states to manifest. We propose an approach called Visually Grounded Virtual Accelerometers (VGVA), to aid with ecologically-valid video analysis investigations, involving humans during dyadic interactions. Utilizing the Human Speechome (HSP) [1] video corpus database, we examine a dyadic interaction paradigm taken from the caregiver-child ecology, during language acquisition. We proceed to characterize human interaction in a video cross-modally; by visually detecting and assessing the child's bodily dynamics in a video, grounded on the caregiver's bodily dynamics of the same video and the related HSP speech transcriptions [2]. Potential applications include analyzing a child's language acquisition, establishing longitudinal diagnostic means for child developmental disorders and generally establishing a metric of effective human communication on dyadic interactions under a video surveillance system. In this thesis, we examine word-learning transcribed video episodes before and after the age of the word's acquisition (AOA). As auditory stimulus is uttered from the caregiver, points along the VGVA tracked sequences corresponding to the onset and post-onset of the child-caregiver bodily responses, are used to longitudinally mark and characterize episodes of word learning. We report a systematic shift in terms of caregiver-child synchrony in motion and turning behavior, tied to exposures of the target word around the time the child begins to understand and thus respond to instances of the spoken word. The systematic shift, diminishes gradually after the age of word acquisition (AOA).
by Kleovoulos (Leo) Tsourides.
S.M.
Chen, Ren. "Bayesian Inference on Mixed-effects Models with Skewed Distributions for HIV longitudinal Data." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4298.
Full textHardenbicker, Paulin [Verfasser], Markus [Akademischer Betreuer] Weitere, Thomas [Gutachter] Berendonk, and Helmut [Gutachter] Hillebrand. "Phytoplankton dynamics in two large rivers: : long-term trends, longitudinal dynamics and potential impacts of climate change / Paulin Hardenbicker ; Gutachter: Thomas Berendonk, Helmut Hillebrand ; Betreuer: Markus Weitere." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://d-nb.info/1154680002/34.
Full textHardenbicker, Paulin [Verfasser], Markus [Akademischer Betreuer] Weitere, Thomas U. [Gutachter] Berendonk, and Helmut [Gutachter] Hillebrand. "Phytoplankton dynamics in two large rivers: : long-term trends, longitudinal dynamics and potential impacts of climate change / Paulin Hardenbicker ; Gutachter: Thomas Berendonk, Helmut Hillebrand ; Betreuer: Markus Weitere." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-147859.
Full textPeterson, Samuel. "Why Can’t We Be Friends? Exploring Short-term Peer Selection and Peer Influence Dynamics Using Longitudinal Social Network Analysis." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1505124845051989.
Full textKim, Mihyun Esther. "A study on pulsation in Runehamar Tunnel fire tests with forced longitudinal ventilation." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-100506-112551/.
Full textKeywords: pulsation; FDS; fire dynamics simulator; oscillation; fluctuation; tunnel fire; forced ventilation. Includes bibliographical references (p.65-66).
Ahmad, Husain Abdulrahman. "Dynamic Braking Control for Accurate Train Braking Distance Estimation under Different Operating Conditions." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19322.
Full textAn MRAC system is developed to control the amount of current through traction motors under various wheel/rail adhesion conditions while braking. Minimizing the braking distance of a train requires the dynamic braking forces to be maximized within the available wheel/rail adhesion. Excessively large dynamic braking can cause wheel lockup that can damage the wheels and rail. Excessive braking forces can also cause large buff loads at the couplers. For DC traction motors, an MRAC system is used to control the current supplied to the traction motors. This motor current is directly proportional to the dynamic braking force. In addition, the MRAC system is also used to control the train speed by controlling the synchronous speed of the AC traction motors. The goal of both control systems for DC and AC traction motors is to apply maximum available dynamic braking while avoiding wheel lockup and high coupler forces. The results of the study indicate that the MRAC system significantly improves braking distance while maintaining better wheel/rail adhesion and coupler dynamics during braking. Furthermore, according to this study, the braking distance can be accurately estimated when MRAC is used. The robustness of the MRAC system with respect to different parameters is investigated, and the results show an acceptable robust response behavior.
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Raffington, Laurel [Verfasser], Ulman [Gutachter] Lindenberger, Christine [Gutachter] Heim, and Kimberly [Gutachter] Noble. "Socioeconomic disparities in children’s cognitive development: Longitudinal dynamics and stress mechanisms / Laurel Raffington ; Gutachter: Ulman Lindenberger, Christine Heim, Kimberly Noble." Berlin : Humboldt-Universität zu Berlin, 2018. http://d-nb.info/1182540996/34.
Full textRaffington, Laurel [Verfasser], Ulman Gutachter] Lindenberger, Christine [Gutachter] [Heim, and Kimberly [Gutachter] Noble. "Socioeconomic disparities in children’s cognitive development: Longitudinal dynamics and stress mechanisms / Laurel Raffington ; Gutachter: Ulman Lindenberger, Christine Heim, Kimberly Noble." Berlin : Humboldt-Universität zu Berlin, 2018. http://d-nb.info/1182540996/34.
Full textBlimbaum, Jordan Matthew. "Finite element analysis of acoustic wave transverse to longitudinal coupling during transverse combustion instability." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44757.
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