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Dissertations / Theses on the topic 'Time to contact'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Karanka, Joni. "Learning in binocular time-to-contact perception." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54808/.

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Time-to-contact (TTC) is defined as the remaining time for an object to reach the observer. This is an important quantity for timing an action such as hitting or catching a ball. This thesis deals with learning processes in TTC perception when binocular vision is available. Chapter 1 studies the learning of TTC in relative discrimination tasks. We did not find learning in this task, but we found that simple correlates of TTC explained the judgments made by the participants. Chapter 2 studies the learning of TTC in absolute estimation tasks. We found that the variable and constant error of the

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2

Nilsson, Robin Lindh. "Contact Sound Synthesis in Real-time Applications." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3938.

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Synthesizing sounds which occur when physically-simulated objects collide in a virtual environment can give more dynamic and realistic sounds compared to pre-recorded sound effects. This real-time computation of sound samples can be computationally intense. In this study we investigate a synthesis algorithm operating in the frequency domain, previously shown to be more efficient than time domain synthesis, and propose a further optimization using multi-threading on the CPU. The multi-threaded synthesis algorithm was designed and implemented as part of a game being developed by Axolot Games. Me

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3

Long, Xinhua. "Loss of contact and time delay dynamics of milling processes." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3421.

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Thesis (Ph.D.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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4

Brendel, Esther Simone [Verfasser]. "Safety Strategies in Time-to-Contact Estimation / Esther Simone Brendel." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/1175400556/34.

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5

Haulcy, R'mani(R'mani Symon). "Time-to-contact statistics as a proxy for accident probabilities." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122699.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 56-58).<br>Accidents are relatively rare, and this makes it difficult to study the impact of traffic system changes or vehicle control changes on accident rates. One potential solution to this problem is the use of time-to-contac

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6

Waizenegger, Wolfgang. "Real-time 3D-based Virtual Eye Contact for Video Communication." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20159.

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Das Problem des fehlenden Augenkontaktes vermindert den Eindruck einer natürlichen Kommunikationssituation bei Videokonferenzen. Während eine Person auf den Bildschirm blickt, wird sie von Kameras aufgenommen, die sich normalerweise direkt daneben befinden. Mit dem Aufkommen von massiv paralleler Computer Hardware und ganz speziell den sehr leistungsstarken Spielegrafikkarten ist es möglich geworden, viele Eingabeansichten für eine Echtzeit 3D Rekonstruktion zu verarbeiten. Eine größere Anzahl von Eingabeansichten mildert Verdeckungsprobleme ab und führt zu vollständigeren 3D Daten. In dieser

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7

Vincent, Ruddy Serge. "Detailed modelling of catalytic chemistry in short contact time reactors." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/9567.

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The current thesis presents a detailed modelling study of the selective oxidation of ethane over noble metal coated surfaces in short contact time reactors. Computational studies were performed featuring heated gas streams flowing through ceramic-foam catalysts coated with platinum and followed by a long inert section. The detailed chemical kinetic mechanisms, with coupled surface and gas-phase chemical reactions, were explored via extensive reaction path and sensitivity analyses to assess the relative contributions of the homogeneous and heterogeneous chemistries and to establish the key hete

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8

Patel, Ketan. "Frequency and time domain contact parameter estimation for space robotic operations." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19579.

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Computer simulations play a significant role in the development and operation of space systems because of the difficulty in performing ground-based hardware testing and onorbit tests are impossible before the launch of these systems. Hence, accurate modeling and simulation of space robotic tasks involving contact is very crucial. This in turn implies that accurate model (contact) parameters, used as inputs to the software to represent the contact operation being simulated, are imperative. In this work, we addressed the contact parameter estimation problem for simple contacting geometries (one-

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9

Kopf, Samantha. "The Effect of Juvenile Justice Contact on Family Support Across Time." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1585150858834228.

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10

Hussain, I. "Multiple model based real time estimation of wheel-rail contact conditions." Thesis, University of Salford, 2012. http://usir.salford.ac.uk/38094/.

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The issue of low adhesion between the wheel and the rail has been a problem for the design and operation of the railway vehicles. The level of adhesion can be influenced by many different factors, such as contamination, climate, and vegetation, and it is extremely difficult to predict with certainty. Changes in the adhesion conditions can be rapid and short-lived, and values can differ from position to position along a route, depending on the type and degree of contamination. All these factors present a significant scientific challenge to effectively design a suitable technique to tackle this

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11

Ibrahim, Mustapha. "Investigation of contact time and impact force of particle-surface impacts." Thesis, Glasgow Caledonian University, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726774.

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12

Walloth, Mirjam [Verfasser]. "Adaptive numerical simulation of contact problems : Resolving local effects at the contact boundary in space and time / Mirjam Walloth." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044082747/34.

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13

Pei, Jiantao, and n/a. "The Accuracy of Time-to-Contact Estimation in the Prediction Motion Paradigm." University of Canberra. Applied Science, 2002. http://erl.canberra.edu.au./public/adt-AUC20050627.143329.

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This thesis is concerned with the accuracy of our estimation of time to make contact with an approaching object as measured by the “Prediction Motion” (PM) technique. The PM task has commonly been used to measure the ability to judge time to contact (TTC). In a PM task, the observer's view of the target is occluded for some period leading up to the moment of impact. The length of the occlusion period is varied and the observer signals the moment of impact by pressing a response key. The interval separating the moment of occlusion and the response is interpreted as the observer's estimate of TT

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14

Müller, Georg [Verfasser], and Anton [Akademischer Betreuer] Schiela. "Optimal control of time-discretized contact problems / Georg Müller ; Betreuer: Anton Schiela." Bayreuth : Universität Bayreuth, 2019. http://d-nb.info/1188314068/34.

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15

Noh, Gunwoo. "An evaluation of time integration schemes in the solution of contact problems." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65313.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 65-66).<br>Contact analysis is an important branch of structural mechanics. The finite element method has become a major solution approach because of the high nonlinearities in contact problems. A large number of algorithms have been proposed and extensively used to solve engineering problems, but some issues have not been addressed yet. The first purpose of this research is to evaluate attempts to achieve accurate and

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16

Blaxter, Tam Tristram. "Speech in space and time : contact, change and diffusion in medieval Norway." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/269365.

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This project uses corpus linguistics and geostatistics to test the sociolinguistic typological theory put forward by Peter Trudgill on the history of Norwegian. The theory includes several effects of societal factors on language change. Most discussed is the proposal that ‘intensive’ language contact causes simplification of language grammar. In the Norwegian case, the claim is that simplificatory changes which affected all of the Continental North Germanic languages (Danish, Swedish, Norwegian) but not the Insular North Germanic Languages were the result of contact with Middle Low German thro

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17

Goggins, Joe. "Distributing real time data from a multi-node large scale contact center using CORBA." [Denver, Colo.] : Regis University, 2007. http://165.236.235.140/lib/JGoggins2007.pdf.

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18

Keil, Tina. "Capturing everyday contact : perceptions, experiences and measurement of everyday intergroup contact in public and private settings." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/32118.

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Increasingly, culturally and ethnically diverse environments provide an abundance of ordinary, everyday intergroup encounters, especially in public settings---often consisting of a conglomeration of positive and negative experiences. Yet few intergroup contact studies have focused on measuring and assessing contact in public settings. Reasons for this include both theoretical and methodological considerations. However, before the impact of mundane, everyday encounters on prejudice reduction can be assessed, it is necessary to examine the following questions: (1) Which situations are perceived

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19

Melendez, Castillo Maria Georgina. "The effects of acid contact time and rock surfaces on acid fracture conductivity." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1956.

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20

Zielke, Hanno [Verfasser]. "Time-related alterations and other confounding factors in direct sediment contact tests / Hanno Zielke." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2011. http://d-nb.info/1014298180/34.

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21

Young, Riki G. "Effect of organic matter and contact time on the sorption and bioavailability of chlorophenols." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-12042009-020047/.

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22

Giachritsis, Christos Dimitrios. "Estimating time-to-contact from retinal flow : the roles of global and local expansion." Thesis, University of Birmingham, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369348.

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23

Göktuğ, Gökhan. "Real-time non-contact measurement and analysis for the control of distortion during welding." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37748.

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24

Mu, Yan, and Yan Mu. "Slurry Mean Residence Time Analysis and Pad-Wafer Contact Characterization in Chemical Mechanical Planarization." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621459.

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This dissertation presents a series of studies related to the slurry mean residence time analysis and the pad-wafer contact characterization in Chemical Mechanical Planarization (CMP). The purpose of these studies is to further understand the fundamentals of CMP and to explore solutions to some of CMP's challenges. Mean residence time (MRT) is a widely used term that is mostly seen in classical chemical engineering reactor analysis. In a CMP process, the wafer-pad interface can be treated as a closed system reactor, and classical reactor theory can be applied to the slurry flow through the reg

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25

Rubin, Ori. "Contact between parents and adult children: The role of time constraints, commuting and automobility." Elsevier, 2015. https://publish.fid-move.qucosa.de/id/qucosa%3A72786.

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Recent developments suggest that the need for contact between parents and adult children is expected to grow, while paid labour is re-organized to include more flexible work schedules and locations. In parallel we view a pressure to increase sustainable mobility through reducing car driving. Against this background, this paper addresses the question: to what extent the frequency of contact between parents and their adult children living out of home is associated with time allocated to work, including commuting time, and with automobility? Face-to-face and telecommunication based contact is con

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26

Wadhwa, Navish. "Non-coalescence of Jets." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/42636.

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Contrary to common intuition, free jets of fluid can ``bounce'' off each other on collision in mid-air, through the effect of a lubricating air film that separates the jets. While there has been much work on coalescing jets of fluid and non-coalescence in other systems like drop-drop, drop on a bath, jet on a bath, non-coalescence of fluid jets has been little studied. A simple experimental setup was developed to stably demonstrate and study the non-coalescence of jets upon collision. This thesis presents the results of an experimental investigation of oblique collision between two fluid jets.

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27

Dinh, Phuong Mai. "Time-dependent density functional theory applied to clusters and molecules in contact with an environment." Habilitation à diriger des recherches, Université Paul Sabatier - Toulouse III, 2009. http://tel.archives-ouvertes.fr/tel-00981941.

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We present recent theoretical and methodological explorations on the dynamics of sodium clusters in the framework of Time-Dependent Density Functional Theory (TDDFT), coupled non-adiabatically to Molecular-Dynamics (MD). In particular, a hierarchical approach, in the spirit of Quantum-Mechanical/Molecular-Mechanical methods, has been developed for the description of metal clusters in interaction with a dynamically polarizable substrate, as rare gases or MgO. Numerous examples of application of this approach (Na clusters in or on Ar substrate, Na clusters deposited on MgO; optical response, dyn

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28

Hossain, Mian Bazle. "Assessment of family planning outreach workers' contact and contraceptive use dynamics in rural Bangladesh using multilevel modelling." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340527.

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29

Reeder, Patrick F. "Infinitesimals for Metaphysics: Consequences for the Ontologies of Space and Time." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343683113.

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30

Can, Van Hao. "Processus de contact sur des graphes aléatoires." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4709/document.

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Le processus de contact est l'un des systèmes de particules en interaction les plus étudiés. Il peut s'interpréter comme un modèlepour la propagation d'un virus dans une population ou sur un réseau. L'objectif de cette thèse est d'étudier la relation entre la structure locale du réseau et le comportement global du processus sur le réseau tout entier.Le cadre typique dans lequel on se place est celui d’une suite de graphes aléatoires $(G_n)$ convergeant localement vers un graphe limite $G$.On étudie alors le comportement asymptotique du temps d’extinction $tau_n$ du processussur $G_n$; lorsqu’i

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31

Bäckström, Nilsson Wilma. "Carbon Filters for Drinking Water Treatment – How Flow Rate and Empty Bed Contact Time Influence the Performance." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298356.

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Dricksvatten är en essentiell del av ett hållbart samhälle. Därför är det viktigt att säkerställa säkert dricksvatten genom fungerande vattenreningsverk. En viktig förorening att behandla är NOM, som i sig är ofarligt men som kan producera farliga föroreningar. En teknik som används för behandling av NOM är kolfiltrering. Hur ökad flödeshastighet och ökad kontakttid påverkade kolfiltrens effektivitet undersöktes vid dricksvattenreningsverket Norrvatten. De undersökta parametrarna var partiklar, ultraviolett absorbans vid 254 nm, turbiditet, konduktivitet, fluorescent löst organiskt material, t

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32

WILSON, GREGORY. "ANAEROBIC/AEROBIC BIODEGRADATION OF PENTACHLOROPHENOL USING GAC FLUIDIZED BED BIOREACTORS: OPTIMIZATION OF THE EMPTY BED CONTACT TIME." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1018531262.

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33

Doyen, David. "Numerical methods for dynamic contact and fracture problems." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00596029.

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The present work deals with the numerical solution of dynamic contact and fracture problems. The contact problem is a Signorini problem with or without Coulomb friction. The fracture problem uses a cohesive zone model with a prescribed crack path. These problems are characterized by a non-regular boundary condition and can be formulated with evolutionary variational inequations or differential inclusions. For the numerical solution, we combine, as usual in solid dynamics, a finite element discretization in space and time-integration schemes. For the contact problem, we begin by comparing the m

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34

Knudsen, Bernard. "A Rheological Examination of Polymer Composites: Including Functionalized Carbon Nanotubes, Viable Polyurethane Alternates, and Contact Lens Hydrogels." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4522.

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From medicine to aerospace, innovation in multiple fields will not occur without addressing current questions that still exist in polymer behavior and manipulation. This dissertation represents the research carried out over the course of three separate experiments using rheometry as the key technique to explore the behavior of polymer composites. In all three studies, polymer composites were investigated for changes to their known physical properties caused through the addition of a filler or functionalization. Chapter Two examines the possibility of enhancing poly(4-methyl-1-pentene) throug

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35

Hodges, Mandi. "Calling time : a discursive analysis of telephone calls to an alcohol helpline." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/7994.

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This thesis takes Discursive Psychology as its main theoretical influence. Drawing on the resources of Discursive Psychology and utilising analytic tools provided by Conversation Analysis, these principles are applied to the study of addiction, and specifically alcohol problems. The data explored are telephone calls to an alcohol helpline. Four analytic chapters are presented. The first focuses on the concept of loss of control over drinking, identifying features of how this concept is constructed in talk and suggests possible functions of control talk for both callers and Advice Workers. The

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36

Waizenegger, Wolfgang [Verfasser], Peter [Gutachter] Eisert, Ralf [Gutachter] Reulke, and Thomas [Gutachter] Sikora. "Real-time 3D-based Virtual Eye Contact for Video Communication / Wolfgang Waizenegger ; Gutachter: Peter Eisert, Ralf Reulke, Thomas Sikora." Berlin : Humboldt-Universität zu Berlin, 2019. http://d-nb.info/1192752872/34.

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37

Worp, Everardus Cornelis Johannes van der. "Corneal desiccation in rigid gas permeable contact lens wear time to deal with 3- and 9-o clock staining /." Maastricht : Maastricht : Universitaire Pers ; University Library, Universiteit Maastricht [host], 2008. http://arno.unimaas.nl/show.cgi?fid=14422.

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38

Sander, Jacob Victor. "Vertical height estimates of pitched balls." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1576607357582938.

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39

Bushnell, Tyler D. "A Biomechanical Analysis of Sprinters vs. Distance Runners at Equal and Maximal Speeds." BYU ScholarsArchive, 2004. https://scholarsarchive.byu.edu/etd/217.

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In the sport of track and field, sprinting and distance running represent two major categories of athletes. Sprinting is associated with power and speed, whereas distance running focuses on the economy of movement. With distance running there are elements of sprint technique that overlap. With distance events, there comes a time near the end of the race where economy gives way to speed. If the distance runners knew how to alter their technique in a way to become more sprint-like, this process could possibly be more successful. PURPOSE: This study compared the differences in technique between s

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40

Gimenez, Renato Lucato. "Sólidos viscoelásticos: área de hemiesferas de borracha contra uma superfície de vidro." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-23052011-111849/.

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Neste trabalho estudou-se a variação da área de contato de hemiesferas de borracha contra uma superfície plana de vidro, variando-se a força de compressão aplicada, o tempo de aplicação da força e a força de separação das superfícies em contato. Os experimentos foram realizados com quatro borrachas de módulos de elasticidade 16,8, 5,77, 5,42 e 2,64 MPa e durezas de 87, 68, 57 e 44 Shore A, respectivamente. Para borrachas de dureza mais elevada, a variação da área de contato é menor para um mesmo carregamento de referência. Para borrachas com maior módulo viscoso, maior é a variação da área de

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Zhao, Litao. "Using a Tracer Study to Determine the Disinfectant Contact Times for the Clarifiers in the City of Carbondale Water Treatment Plant." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967805041&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Banov, Ivan K. "The Production of Voice Onset Time in Voiceless Stops by Spanish-English Natural Bilinguals." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4340.

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This study analyzes the production of Voice Onset Time (VOT) of natural Spanish-English bilinguals. VOT is a linguistic characteristic that measures the amount of aspiration occurring after the release of a stop consonant. In terms of VOT, English stop consonants differ substantially from their Spanish equivalents. This study analyzes whether or not natural bilinguals produce VOTs that approximate VOTs of monolingual speakers of each language. Participants completed two surveys to quantify their linguistic dominance in English and Spanish. They were then recorded performing similar speaking ta

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Wiechern, Beth Justina. "Analysis of breathing during oral reading by young children with and without asthma using non-contact respiratory monitoring methods : a preliminary study of task and reading difficulty effects." Thesis, University of Canterbury. Health Sciences, 2014. http://hdl.handle.net/10092/10202.

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The aim of this research was to investigate the breathing patterns of children aged 5-9 years with asthma as they read aloud stories of increasingly difficulty. Participants were 11 children diagnosed with moderate to severe asthma recruited from an out-patient clinic and 11 gender- and age-matched controls recruited from local schools. Non-contact respiratory monitoring methods were employed to yield acoustic recordings during three non-reading tasks and three reading aloud tasks which increased in difficulty. Measurements included breathing rate, pause time in speech, and time ratio between

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Ono, Keita [Verfasser], Heinz [Akademischer Betreuer] Ulbrich, and Bodo [Akademischer Betreuer] Heimann. "Development of an XFEM based Adaptive Contact Model for Telepresence Systems with Time Delay / Keita Ono. Gutachter: Bodo Heimann. Betreuer: Heinz Ulbrich." München : Universitätsbibliothek der TU München, 2011. http://d-nb.info/1019588322/34.

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45

Dzeaye, Ngah Veranyuy. "Prolactin and testosterone levels in first-time fathers with skin-to-skin contact with their infants soon after birth by caesarean section." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/5939.

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46

Di, Stasio Jean. "The CD-Lagrange scheme, a robust explicit time-integrator for impact dynamics : A new singular mass formulation, and an extension to deformable-deformable contact." Thesis, Lyon, 2021. http://www.theses.fr/2021LYSEI029.

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Les pneumatiques sont complexes à simuler car les matériaux y sont hétérogènes, incompressibles et non-linéaires. De plus la géométrie descend jusqu’à l’échelle millimétrique pour les sculptures de la bande de roulement, ce qui requiert un maillage fin. Le modèle éléments finis présente donc un grand nombre de degrés de liberté, reliés par des équations non-linéaires. En dynamique, la simulation est d’autant plus compliquée avec des chocs. Néanmoins elle est cruciale dans le processus de conception pneumatique, où elle apporte une meilleur compréhension de la physique ceci sans tests réels. Le

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Beyer, Thibault. "Semi-analytical modeling of damage under contact loading : Application to heterogeneous materials." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI045/document.

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Les pieds d’aubes de soufflantes de turboréacteurs étant soumis à des sollicitations de type fretting, l’introduction de matériaux composites dans la nouvelle génération de moteur d’avion a rendu nécessaire le développement d’outils permettant de modéliser le contact entre des matériaux hétérogènes. En particulier, le comportement tribologique et l’endommagement de ces matériaux est encore mal compris. La mise en place de méthodes numériques capable de prédire les endommagements dans le contact permettrait de mieux prédire la durée de vie des pièces en service et de garantir la sécurité des pa

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48

Stevens, Ben. "Short-time structural stability of compressible vortex sheets with surface tension." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:378713da-cd05-4b9a-856d-bee2b0fb47ce.

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The main purpose of this work is to prove short-time structural stability of compressible vortex sheets with surface tension. The main result can be summarised as follows. Assume we start with an initial vortex-sheet configuration which consists of two inviscid fluids with density bounded below flowing smoothly past each other, where a strictly positive fixed coefficient of surface tension produces a surface tension force across the common interface, balanced by the pressure jump. We assume the fluids are modelled by the compressible Euler equations in three space dimensions with a very genera

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49

Rogge, Matthew Douglas. "In-process sensing of weld penetration depth using non-contact laser ultrasound system." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31698.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Ume, Charles; Committee Member: Chen, Ye-Hwa; Committee Member: Michaels, Jennifer; Committee Member: Sadegh, Nader; Committee Member: Vachtsevanos, George. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Quirt, Jill Sutherland. "Epigenetic DNA methylation is not associated with natural variation in caregiver-infant physical contact time in a cross-sectional sample of human toddlers." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42157.

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Background: Early infant experience has been associated with long term epigenetic modifications of gene expression and subsequent health outcomes. We questioned whether daily physical contact time shared between an infant and their caregiver as an early experience was associated with prolonged variations in the epigenetic patterns of toddlers. Methods: We performed a second look analysis of a self-reported 3-day diary kept by 1,055 caregivers of their behaviours and interactions with their infants at 5 weeks of age. We measured the average daily physical contact time shared between the infant

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