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Dissertations / Theses on the topic 'Spatial control'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 January 2023

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1

Messin, Liam J. "Spatial control of microtubule shrinkage." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/94871/.

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Microtubules are long linear polymers that switch randomly between periods of growth and shrinkage, in a process known as dynamic instability. In vivo, dynamic instability is regulated by microtubule associated proteins (MAPs). One class of MAPS, the kinesins, move actively along microtubules, and some regulate microtubule dynamics. Kinesin-8, a kinesin, regulates microtubule dynamics in a wide range of eukaryotic cells. Schizosaccharomyces pombe (S. pombe) provides a well-characterised system in which to study microtubule regulation by MAPs. During interphase, microtubules grow from the centr

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2

Lino, Christophe. "Virtual camera control using dynamic spatial partitions." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00916835.

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Virtual camera control is nowadays an essential component in many computer graphics applications. Despite its importance, current approaches remain limited in their expressiveness, interactive nature and performances. Typically, elements of directorial style and genre cannot be easily modeled nor simulated due to the lack of simultaneous control in viewpoint computation, camera path planning and editing. Second, there is a lack in exploring the creative potential behind the coupling of a human with an intelligent system to assist users in the complex task of designing cinematographic sequences

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3

Ni, Jie. "Control of the spatial double inverted pendulum." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104855.

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The stabilization of a hip-actuated spatial double inverted pendulum can be considered as a problem of postural control of a humanoid robot. Based on an existing model of this underactuated mechanical system with four degrees of freedom, the ultimate objective is to design a suitable controller to achieve global stabilization around the unstable upright equilibrium position. This thesis presents a number of control algorithms and simulation results that provide either local stabilization or semi-global swing-up. For the effort of local stabilization in the vicinity of the upright equilibrium p

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4

Gauthier, Thomas P. 1980. "Spatial control of cavitation in therapeutic ultrasound." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30171.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.<br>Includes bibliographical references (p. 60-65).<br>Inertial cavitation has been implicated as the primary mechanism for a host of emerging applications. In all these applications, the main concern is to induce cavitation in perfectly controlled locations in the field; this means specifically to be able to achieve cavitation threshold at the geometrical focus of the transducer without stimulating its near field. In this study, we make use of dual-frequency methods to preferential

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5

Chen, Yiyang. "Iterative learning control for spatial path tracking." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/415865/.

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Iterative learning control (ILC) is a high performance method for systems operating in a repetitive manner, which aims to improve tracking performance by learning from previous trial information. In recent years research interest has focused on generalizing the task description in order to achieve greater performance and flexibility. In particular, researchers have addressed the ease of tracking only at a single, or a collection of time instants. However, there still remain substantial open problems, such as the choice of the time instants, the need for system constraint handling, and the abil

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6

Chen, Chih-Keng. "Nonholonomic control of coupled spatial multibody systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1057091907.

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7

Fairbairn, Jonathan Paul. "Spatial and temporal dynamics of entomopathogenic nematodes." Thesis, University of Stirling, 2001. http://hdl.handle.net/1893/26685.

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The life-history and infection parameters of the entomopathogenic nematodes Steinernema feltiae (Filipjev)(Nematoda:Rhabditida) and Heterorhahditis megidis (Poinar, Jackson & Klein)(Nematoda:Rhabditida) were examined to provide specific details for the construction of mathematical SI models for biological control of soil insect pests. Laboratory experiments using the Greater Waxmoth, Galleria mellonella as the model host were undertaken to specifically examine the transmission behaviour of infective juvenile nematodes. The proportion of infective juveniles of S. feltiae which infected hosts wa

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8

Lee, Yong Keat. "Active vibration control of a piezoelectric laminate plate using spatial control approach." Title page, abstract and table of contents only, 2005. http://hdl.handle.net/2440/37711.

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This thesis represents the work that has been done by the author during his Master of Engineering Science candidature in the area of vibration control of flexible structures at the School of Mechanical Engineering, The University of Adelaide, between March 2003 and June 2004. The aim of this research is to further extend the application of the Spatial Control Approach for two-dimensional flexible structures for attenuating global structural vibration with the possible implication of reduction in noise radiation. The research was concentrated on a simply supported thin flexible plate, using pie

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9

Volpe, Giorgio. "Nanoscale spatial control of light in optical antennas." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/96168.

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El control dinámico y determinístico de la luz en una escala espacial por debajo de la longitud de onda es un requisito clave para ampliar los conceptos y las funcionalidades de la macro-óptica hasta la escala nanométrica. Un mayor nivel de control también tendrá implicaciones importantes en nuestra comprensión de los fenómenos ópticos en la nanoescala. Uno de los principales problemas en nano-óptica tiene como objetivo describir cómo y con qué precisión es posible controlar la distribución espacial de la luz de forma dinámica en la nanoescala. Desafortunadamente, un límite fundamental de la f

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10

Bullock, Adrian. "SPACE : SPatial Access Control for collaborative virtual Environments." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285675.

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11

Zaidi, Syed Ali Mustafa. "Accelerating control-flow intensive code in spatial hardware." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708878.

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12

Brown, Gillian Louise. "Spatial control of ligand presentation on biomaterial surfaces." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/57669.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.<br>Includes bibliographical references (leaves 201-211).<br>Adhesion of many cell types to the extracellular matrix or to synthetic bioactive surfaces is mediated by transmembrane integrin receptors. Integrin clustering is believed to be closely associated with focal contact formation and signaling, as assessed by the behavior of cells on surfaces presenting relatively uniform ligand distributions. It has therefore been hypothesized that controlled clustering of 2, 3.....n integrins might b

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13

Falk, Jill E. "Mechanisms underlying spatial control of exit from mitosis." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103238.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Biology, 2016.<br>DVD-ROM contains 4 supplemental movies (mov.) for Chapter III.<br>Both MIT Institute Archives and Science Library copy: with DVD-ROM.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>During mitosis, cells must accurately segregate their genome in order to produce healthy daughter cells. In budding yeast, cells align their anaphase spindle along a predetermined axis of division in order to partition their genome into the daughter cells. In the event that the spindle becomes

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14

Brand, Samuel P. C. "Spatial and stochastic epidemics : theory, simulation and control." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/56738/.

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It is now widely acknowledged that spatial structure and hence the spatial position of host populations plays a vital role in the spread of infection. In this work I investigate an ensemble of techniques for understanding the stochastic dynamics of spatial and discrete epidemic processes, with especial consideration given to SIR disease dynamics for the Levins-type metapopulation. I present a toolbox of techniques for the modeller of spatial epidemics. The highlight results are a novel form of moment closure derived directly from a stochastic differential representation of the epidemic, a stoc

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15

Uhl, Brecken. "Direct Spatial Antenna Modulation for Wideband Phase Control." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/604278.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California<br>Direct spatial antenna modulation (DSAM) is a new approach to phased array control that opens up new "smart antenna" architecture possibilities. The DSAM technique leverages the inherent spatial differences of excitation in an antenna in a novel way to achieve the equivalent of conventional modulation and beam control effects. Smart antenna techniques are of potentially increasin

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16

Schultheis, Holger. "Computational cognitive modeling of control in spatial cognition." Lengerich Berlin Bremen Miami, Fla. Riga Viernheim Wien Zagreb Pabst Science Publ, 2009. http://d-nb.info/998029661/04.

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17

Dylla, Frank. "An agent control perspective on qualitative spatial reasoning : towards more intuitive spatial agent development /." [Berlin] : Aka, 2008. http://d-nb.info/989997510/04.

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18

Hargrave, Stephen Mark. "Spatial material transport and processing systems : modelling, simulation and control." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322919.

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19

Weger, Ulrich Wolfgang. "Spatial and linguistic control of eye movements during reading." Diss., Online access via UMI:, 2005.

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20

Howarth, Richard J. "Spatial representation, reasoning and control for a surveillance system." Thesis, Queen Mary, University of London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369664.

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21

Jackson, David P. "Spatial control of transcription in flowers of Antirrhinum majus." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292659.

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22

Hinder, Steven. "The compositional and spatial control of self-assembled monolayers." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364666.

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23

Zheng, Xiao. "Mid-spatial frequency control for automated functional surface processing." Thesis, University of Huddersfield, 2018. http://eprints.hud.ac.uk/id/eprint/34723/.

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Functional surfaces interact with surrounding substances, such as another solid, a liquid, gas, acoustic or electromagnetic waves etc., in order to achieve a required effect. Surfaces are increasingly required with complex forms and ever-increasing precision, can be very challenging to make. In particular, mid-spatial frequency (MSF) ripples are difficult to avoid for various reasons, but especially the changing misfit between a polishing tool as it moves across a complex workpiece surface. Current surface processing techniques are limited in their ability effectively to control or remove MSF

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24

Atwood, Emma Katherine. "Spatial Dramaturgy and Domestic Control in Early Modern Drama." Thesis, Boston College, 2015. http://hdl.handle.net/2345/bc-ir:104813.

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Thesis advisor: Mary T. Crane<br>Thesis advisor: Andrew Sofer<br>Spatial Dramaturgy and Domestic Control in Early Modern Drama explores the social components of early modern domestic architecture and the spatial practices that helped to dramatize them. Each chapter examines a particular domestic feature—doors, windows, galleries, studies—and considers its role in a variety of early modern plays. Methodologically, I bridge the gaps between literary study, dramaturgy, and history by analyzing the palimpsest of the physical stage (e.g., the upper playing balcony) and the fictional spaces produced

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25

Hegarty-Cremer, Solene G. "Spatial control and cell guidance in evolving biological tissues." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207246/1/Solene_Hegarty-Cremer_Thesis.pdf.

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In this thesis, a mathematical model for tissue growth under curvature control and directed cell guidance is derived. The model extends previous mathematical work by adding a tangential cell velocity. A numerical solver is implemented to solve the model and the solutions show that new cases of tissue growth can now be simulated thanks to the extension derived in this thesis. Finally, the model is fit to data on bone pore infilling and is used to examine hypotheses about atypical tissue growth.

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26

Dai, Jing. "Efficient Concurrent Operations in Spatial Databases." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28987.

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As demanded by applications such as GIS, CAD, ecology analysis, and space research, efficient spatial data access methods have attracted much research. Especially, moving object management and continuous spatial queries are becoming highlighted in the spatial database area. However, most of the existing spatial query processing approaches were designed for single-user environments, which may not ensure correctness and data consistency in multiple-user environments. This research focuses on designing efficient concurrent operations on spatial datasets. Current multidimensional data access meth

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27

Wang, Xuan. "Contrôle de forme d'un miroir spatial par actionneurs piézoélectriques." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0043/document.

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La prochaine génération de télescopes spatiaux devra repousser les limites des technologies actuelles afin d’accroitre les performances techniques et opérationnelles. Dans le cas d’observations difficiles, l'utilisation de plus grandes ouvertures des miroirs primaires est essentielle pour obtenir la résolution optique et la sensibilité requises. Toutefois, les grandes ouvertures primaires induisent un certain nombre de défis techniques tels que la masse, le volume et la raideur du miroir. La masse et le volume doivent rester acceptables par rapport au lanceur et la raideur du miroir, qui dimin

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28

Oscarsson, Joakim. "A spatial presence of thoughtfulness : Electrolux experience." Thesis, Konstfack, Industridesign, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-2834.

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"It is not about the product. It is about the total experience." My aim with this project is to explore the interaction between technology, brand, space and the human being in designing an overall experience. We are moving towards a reality where intelligent technology is getting embedded in our homes and our lives. How can we make technology not just intelligent, but also more empathic and sensual? Can we create a relationship to a company, just as if it was a real person? Considering design as communication/conversation, I like to think of the product as a presence of a subject rather than a

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29

Kircali, Omer Faruk. "Active Vibration Control Of A Smart Beam: A Spatial Approach." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607555/index.pdf.

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This study presented the design and implementation of a spatial Hinf controller to suppress the free and forced vibrations of a cantilevered smart beam. The smart beam consists of a passive aluminum beam with surface bonded PZT (Lead-Zirconate-Titanate) patches. In this study, the PZT patches were used as the actuators and a laser displacement sensor was used as the sensor. In the first part of the study, the modeling of the smart beam by the assumed-modes method was conducted. The model correction technique was applied to include the effect of out-of-range modes on the dynamics of the syst

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30

Newman, Lisa J. "MYB misexpression links the spatial control of lignification with photomorphogenesis." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365719.

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31

Hsieh, Shulan. "Shifting task 'set' : exploring non-spatial aspects of intentional control." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316858.

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32

Webb, Richard Davis 1957. "Spatial frequency based closed-loop control of sheet metal forming." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14827.

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33

Guo, Ruey-Shan. "Modeling, optimization, and control of spatial uniformity in manufacturing processes." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13459.

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34

Gossain, Hrishikesh. "Power Control and Spatial Reusability in Mobile Ad Hoc Networks." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1115308673.

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35

Harvey, Sean [Verfasser]. "Nanoscale spatial control and application of poly(catecholamines) / Sean Harvey." Ulm : Universität Ulm, 2021. http://d-nb.info/1225400945/34.

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36

Aslani, Pegah. "Active Control of Cylindrical Shells Using the Weighted Sum of Spatial Gradients (WSSG) Control Metric." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6454.

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Cylindrical shells are common structures that are often used in industry, such as pipes, ducts, aircraft fuselages, rockets, submarine pressure hulls, electric motors and generators. In many applications it is desired to attenuate the sound radiated from the vibrating structure. There are both active and passive methods to achieve this purpose. However, at low frequencies passive methods are less effective and often an excessive amount of material is needed to achieve acceptable results. There have been a number of works regarding active control methods for this type of structure. In most case

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37

Moore, Brandon Joseph. "Cooperative strategies for spatial resource allocation." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1180971769.

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38

Shrekenhamer, David. "Dynamic Control of Metamaterials at Terahertz Frequencies." Thesis, Boston College, 2013. http://hdl.handle.net/2345/3152.

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Thesis advisor: Willie J. Padilla<br>Progress in the field of metamaterials has started coming to a point where the field may finally begin to emerge as a viable solution to many electromagnetic challenges facing the community. No where is that more true then at terahertz frequencies where there lies an immense opportunity for growth. The development of mature technologies within this region of the electromagnetic spectrum would provide a valuable resource to become available for a multitude of applications. In order to achieve this, the necessary first steps of identifying viable materials an

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39

Gupta, Maneesh Kumar. "Stimuli-responsive hybrid nanomaterials: spatial and temporal control of multifunctional properties." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45920.

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Recently, technological advancement and the promise of next-generation devices have created an overwhelming push for the continued miniaturization of active systems to the micro- and nanometer scale. In this regime, traditional mechanical systems are largely inaccessible and as a result new active or stimuli-responsive materials are required. The work presented in this dissertation provides an understanding of the responsive nature of polymer and biopolymer interfaces especially in contact with metal nanoparticles. This understanding was utilized in conjunction with top-down template-based an

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40

Sinclair, Scott. "Pattern formation and control of spatial structures in optical parametric oscillators." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249142.

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41

Tekin, Halil. "Microengineered responsive platforms for spatial and geometrical control of multicellular organizations." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79222.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Living systems are composed of complex multicellular organizations containing various cell types spatially distributed in defined microenvironments. The intricate cell-cell and cell-matrix interactions in these microenvironments regulate the cell fate, differentiation of the cells, and functions of the associated tissues. Recreating these complex associations in vitro can be highly useful for fabr

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42

Chao, Ling Ph D. Massachusetts Institute of Technology. "Spatial and temporal control of lipid-membrane morphology induced by sphingomyelinase." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51670.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 195-201).<br>Sphingomyelinase (SMase) has been shown to be involved in a variety of cell regulation processes. It can convert sphingomyelin (SM) to ceramide (Cer) and has been suggested to influence the cellular processes by reorganizing the cell membrane morphology. This thesis aims at a more comprehensive under

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Kurup, Abhishek. "Spatial awareness| how cells respond and control extracellular matrix stiffness topography." Thesis, University of California, Irvine, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3727444.

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<p> The mechanical properties of the extracellular matrix (ECM) have shown to regulate key cellular processes. However, current tools studying cell-ECM biophysical interactions revolve around cell-mediated traction forces, which, as I will show, are not appropriate in natural matrices due to matrix remodeling. I used active microrheology (AMR) to, instead, measure ECM stiffness in order to quantify these interactions in various cell-ECM systems. </p><p> In the first system, I evaluated a commonly used 3D cell-culture method in breast cancer research. I show that this model produces a large

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44

Stringer, Bryan Pascal. "Cities Divided: The Spatial Legacy of Apartheid." Ohio University Honors Tutorial College / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors155628942846541.

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45

Bonham, John G. "Effects of Spatial Information on Estimated Farm Nonpoint Source Pollution Control Costs." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34797.

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In the state of Virginia, population growth and the associated increases in municipal wastewater, along with the threat of EPA regulations, will increase the need for reductions in phosphorous (P) loads in surface waters in order to meet and maintain water quality standards for the Chesapeake Bay. Agriculture contributes 49% of P entering the Bay; therefore, it can be expected that agriculture will be targeted as a source of P reductions. Spatially variable physical and socioeconomic characteristics of a watershed and its occupant farms affect both the decisions made by farmers and the transpo

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Reuther, Cordula. "Patterning planar surfaces with motor proteins: Towards spatial control over motile microtubules." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-20916.

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A major challenge in nanotechnology is the spatially controlled transport of cargo on the nanometer scale. The use of a nanoscale transport system based on molecular motors and filaments of the cytoskeleton proved as a promising approach to this problem. Therefore, the objective of this work was to pattern planar surfaces with motor proteins in a way that allows controlled and guided movement of microtubule-shuttles. The first part of the work was in particular focused on generating nanometer–sized tracks of motor proteins on unstructured surfaces. Specifically, microtubules themselves were us

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Weber, Kimberly Diane. "Motor learning in the non-visual control of spatial orientation during locomotion." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq24709.pdf.

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48

O'Rorke, Richard. "The spatial control of particles in microfluidic systems using surface acoustic waves." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590299.

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Control over particle positioning is of particular importance in microfluidic systems. Acoustic techniques offer a low- power, minimally invasive method of achieving such control. This thesis discusses such control using surface acoustic waves. Mathematical models are first developed to describe the control over particles in liquids using acoustic radiation forces , which highlight the influence of acoustic power and particle size. The formation of both one and two dimensional particle arrays in fluidic channels are t hen demonstrated experimentally in a range of fluidic channels. Particle acc

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49

Trukenbrod, Hans Arne. "Temporal and spatial aspects of eye-movement control : from reading to scanning." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2014/7020/.

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Eye movements are a powerful tool to examine cognitive processes. However, in most paradigms little is known about the dynamics present in sequences of saccades and fixations. In particular, the control of fixation durations has been widely neglected in most tasks. As a notable exception, both spatial and temporal aspects of eye-movement control have been thoroughly investigated during reading. There, the scientific discourse was dominated by three controversies, (i), the role of oculomotor vs. cognitive processing on eye-movement control, (ii) the serial vs. parallel processing of words, and,

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Weir, Clifford Ronald. "The role of extraocular afferent signals in oculomotor control and spatial localisation." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390774.

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