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Dissertations / Theses on the topic 'Motor image'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Hamblin, Erin. "The Effects of Divided Attention on Speech Motor, Verbal Fluency and Manual Motor Task Performance." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd905.pdf.

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2

Rohlén, Robin. "Segmentation of motor units in ultrasound image sequences." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-126896.

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The archetypal modern comic book superhero, Superman, has two superpowers of interest: the ability to see into objects and the ability to see distant objects. Now, humans possess these powers as well, due to the medical ultrasound imaging and sound navigation. Ultrasound, a type of sound we cannot hear, has enabled us to see a world otherwise invisible to us. Ultrasound medical imaging can be used to visualize and quantify anatomical and functional aspects of internal tissues and organs of the human body. Skeletal muscle tissue is functionally composed by so called motor units which are the smallest voluntarily activatable units and is of primary interest in this study. The major complexity in segmentation of motor units in skeletal muscle tissue in ultrasound image sequences is the aspect of overlapping objects. We propose a framework and evaluate the performance on simulated synthetic data. We have found that it is possible to segment motor units under an isometric contraction using high-end ultrasound scanners and we have proposed a framework which is robust when simulating up to 10 components when exposed to 20 dB Gaussian white noise. The framework is not satisfactory robust when exposed to significant amount of noise. In order to be able to segment a large number of components, decomposition is inevitable and together with development of a step including smoothing, the framework can be further improved.

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3

Long, Blaine Cletus. "Motor Function Responses to Induced Pain and Cryotherapy." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2394.pdf.

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4

Shemmell, Jonahan B. H. "Neuromuscular-skeletal constraints on the acquisition of human coordination /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18163.pdf.

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5

Farrow, Damian. "Expertise and the acquisition of perceptual-motor skill /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16469.pdf.

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6

Cahill, Louise Margaret. "Motor speech function following childhood traumatic brain injury /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16948.pdf.

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7

Lao, Yin, and 劉然. "Image matching of running vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30278806.

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8

Shepherd, Megan. "Personality and psychological characteristics of successful motor racing drivers /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17671.pdf.

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9

Ren, Feng Hui. "Multi-image query content-based image retrieval." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20070103.143624/index.html.

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10

Seegmiller, Luke W. "Utah Commercial Motor Vehicle Weigh-in-Motion Data Analysis and Calibration Methodology." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1616.pdf.

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11

Simpson, Andrew G. "Parametric modelling of energy consumption in road vehicles /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe.pdf.

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12

Mellor, Rebecca. "Motor unit synchronization between the vasti muscles : physiology, pathophysiology and plasticity /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18951.pdf.

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13

Banks, Glen B. "The role of synapse formation on motoneuron survival during embryonic development /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17453.pdf.

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14

Liu, Hugh-sing Hugh. "Integrated vehicle positioning system using sensors and image processing of beacon signal /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21903888.

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15

Leiter, Amy Sue. "The Effects of Task Preference on Speech and Motor Performance Under Divided Attention Conditions." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2417.pdf.

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16

Sterling, Michele. "Motor, sensory and psychological impairments following whiplash injury : development and predictive function /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17379.pdf.

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17

Farrell, Anna. "The effects of neurosurgical treatments on motor speech function in Parkinson's disease /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17957.pdf.

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18

Mower, D. Adam. "An Investigation of Wear-Resistant Coatings on an A390 Die-Cast Aluminum Substrate." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1765.pdf.

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19

Cornwell, Petrea Lee. "An examination of motor speech function in children treated for posterior fossa tumours /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17284.pdf.

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20

Early, Juliana Marie. "Investigation of orthogonal blade-vortex interaction using a particle image velocimetry technique." Thesis, University of Glasgow, 2006. http://theses.gla.ac.uk/619/.

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The complex flowfield which is associated with a rotor wake gives rise to the multitude of aerodynamic interactions that may occur during rotorcraft operation. These interactions may give rise to undesirable noise and lead to an unacceptable performance degradation, and as such the investigation of the fundamental mechanics of such interactions, that which occurs between the tail rotor and the trailing tip vortices shed from the main rotor assembly, is the focus of the current investigation. As the purpose of the tail rotor is to provide balance for the torque of the main rotor, these types of interaction will adversely impact on the overall rotorcraft performance. The basis of the present thesis has been an experimental investigation of the orthogonal BVI, in which the axis of the interacting vortex (in the plane of the vortex core axial flow) is nominally orthogonal to the interacting blade chordline, representing the tail rotor interaction. The tests have been conducted using a specifically designed facility at the University of Glasgow, with the flow interrogated using a Particle Image Velocimetry (PVI) technique. The PVI method allows global flowfield information to be obtained pertaining to the nature of the interaction. The methodology was benchmarked against synthetic flowfields, and with the accuracy of the flowfield measurements improved dramatically with the implementation of the Forward/Reverse Tile Test (FRTT), which improved the accuracy in the flowfields to 3% in two-dimensional interrigation, and 5% in three-dimensional. The interrogation of the flowfield around the representative tail rotor blade demonstrated that the characteristics imparted vortex due to the BVI event could be attributed to the manner in which the axial flow component of the vortex was affected by the interaction. The results for the isolated flow conditions agreed well with those from previous measurements of the vortical structure, and the post interaction structure clearly indicated distinct differences determined by the direction of the axial flow relative to the blade chordline. Initial testing indicated that the thickness ratio had a marked effect on the progression of the OBVI, and for a suitably high thickness ratio, there was little evidence to suggest that the vortex core axial flow is 'cut' by the interacting body in the manner observed for the lower thickness ratios. For lower thickness ratios, as the vortex core is blocked by the interacting blade surface, the retardation of the axial component on the blade lower surface leads to rapid redistribution of the fluid into the surrounding flow, and the corresponding enlargement and distortion to the vortex tangential velocity components promoted by the radial outflow. On the upper blade side, regions of negative axial flow velocity indicate the presence of some fluid passing down through the core towards the surface of the blade, which are accompanied by a split divergence pattern around the vortex core. The effects immediately behind the trailing edge continue to be of interest due to the manner in which the vortex might be regenerated after the interaction and before any subsequent interactions with following blades. A relative lack of distortion within the out-of-plane component indicates that a rapid regeneration of the axial flow component may occur once the vortex has passed over the trailing edge. The use of passive control techniques in reduction of the effects associated with the orthoganal BVI have also been addressed, considering the effect of a counter-rotating vortex pair on the progression of the interaction. Although the inclusion a notch in the leading edge and outboard sweep on the rotor blade producing the representative trailing tip vortex did produce a well defined inboard vortex structure, there is evidence to suggest that this structure is ingested into the outboard tip vortex, as there is no significant modification to the progression of the OBVI.

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21

Williams, Megan C. "A perceptual evaluation of the effect of a pseudopalate on voiceless obstruent production and motor adaptation /." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2975.pdf.

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22

Maloy, Lucia. "Comparison of single-use and multiple-use electrodes for sensory, motor threshold amplitudes and force production /." Diss., CLICK HERE for online access, 2010. http://contentdm.lib.byu.edu/ETD/image/etd3350.pdf.

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23

Boone, Andrew Johnson. "Active minimization of acoustic energy density to attenuate radiated noise from a diesel generator /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1595.pdf.

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24

Alba, Micah Adam. "Comparison of two training programs on acceleration out of the break in American football /." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2759.pdf.

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25

Johnson, Jennifer Lynn. "Effects of delayed auditory feedback on the Bereitschaftspotential /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2144.pdf.

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26

Macaulay-Reif, Teegan. "An investigation into the effects of sleep on a procedural-based memory task /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19256.pdf.

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27

廖曉昇 and Hugh-sing Hugh Liu. "Integrated vehicle positioning system using sensors and image processing of beacon signal." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31223114.

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28

Sims, Kevin Joseph. "Neuromuscular control of medio-lateral postural stability in unilateral hip osteoarthritis /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17510.pdf.

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29

Vincent-Humphreys, Diane Lesley de. "A gestural recognition interface using machine vision : towards improving computer interaction for people with severe motor disabilities." Thesis, Coventry University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362648.

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30

Boström, Viktor. "Positioning and tracking using image recognition and triangulation." Thesis, Uppsala universitet, Signaler och system, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448110.

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Triangulation is used in a wide range of applications of position estimation. Usually it is donebymeasuring angles by hand to estimate positions in land surveying, navigation and astronomy.Withthe rise of image recognition arises the possibility to triangulate automatically. The aim ofthis thesisis to use the image recognition camera Pixy2 to triangulate a target i threedimensions. It is basedon previous projects on the topic to extend the system to estimatepositions over a larger spaceusing more Pixy2s. The setup used five Pixy2s with pan-tilt kitsand one Raspberry Pi 4 B. Somelimitations to the hardware was discovered, limiting the extentof the space in which triangulationcould be successfully performed. Furthermore, there weresome issues with the image recognitionalgorithm in the environment positioning was performed.The thesis was successful in that it managesto triangulate positions over a larger area thanprevious projects and in all three dimensions. Thesystem could also follow a target’s trajectory,albeit, there were some gaps in the measurements.

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31

Ireland, Matthew F. "Purinergic and cholinergic influences on hypoglossal motoneuron excitability /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18739.pdf.

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32

Takenobu, Yohei. "Motor recovery and microstructural change in rubro-spinal tract in subcortical stroke." Kyoto University, 2014. http://hdl.handle.net/2433/188686.

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33

Berry, Jason. "Expert perceptual and decision-making skill: identification, development and acquisition in a team invasion spoet / Jason Berry." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18394.pdf.

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34

DeLacy, Michael. "Postural muscle activation timing in children with and without cerebral palsy /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19973.pdf.

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35

Svensson, Kenth Ingemar. "Effects of Fuel Molecular Structure and Composition on Soot Formation in Direct-Injection Spray Flames." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd830.pdf.

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36

Oliver, Jonah. "Sporting expertise : does the visuomotor map show the way? /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17716.pdf.

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37

Klepper, Karin. "Family-centred physiotherapy for children with developmental coordination disorder /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19188.pdf.

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38

Floyd, Beatrice K. "Vision-Based Techniques for Cognitive and Motor Skill Assessments." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1338824242.

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39

Turley, Carole. "Calibration Procedure for a Microscopic Traffic Simulation Model." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1747.pdf.

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40

Watter, Pauline. "The development of postural control in children aged 6, 7 and 8 years /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17679.pdf.

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41

Johnston, Leanne M. "Postural muscle timing during upper-limb motion in eight- to ten-year-old children with and without Developmental Coordination Disorder /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18065.pdf.

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42

Anderson, Lindsey B. "Big Trouble for the Big Three: An Audience Perspective of the Appropriateness and Effectiveness of the Big Three Automakers’ Image Repair Strategies." Thesis, Connect to resource online, 2010. http://hdl.handle.net/1805/2184.

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Thesis (M.A.)--Indiana University, 2010.<br>Title from screen (viewed on July 18, 2010). Department of Communication Studies, Indiana University-Purdue University Indianapolis (IUPUI). Advisor(s): John Parrish-Sprowl, Kristina Horn Sheeler, Ronald Sandwina. Includes vitae. Includes bibliographical references (leaves 133-138).

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43

Adeboye, Taiyelolu. "Robot Goalkeeper : A robotic goalkeeper based on machine vision and motor control." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27561.

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This report shows a robust and efficient implementation of a speed-optimized algorithm for object recognition, 3D real world location and tracking in real time. It details a design that was focused on detecting and following objects in flight as applied to a football in motion. An overall goal of the design was to develop a system capable of recognizing an object and its present and near future location while also actuating a robotic arm in response to the motion of the ball in flight. The implementation made use of image processing functions in C++, NVIDIA Jetson TX1, Sterolabs’ ZED stereoscopic camera setup in connection to an embedded system controller for the robot arm. The image processing was done with a textured background and the 3D location coordinates were applied to the correction of a Kalman filter model that was used for estimating and predicting the ball location. A capture and processing speed of 59.4 frames per second was obtained with good accuracy in depth detection while the ball was well tracked in the tests carried out.

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44

Watson, Ashleigh Louise. "Multisensory integration, predictive coding and the Bayesian brain : reintegrating the body image and body schema distinction into cognitive science." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23505.

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The classic distinction between the body schema and the body image received renewed interest in cognitive psychology, in part because of the attempts by the leading psychologist Charles Spence and his co-authors to synthesise a mounting body of research into the multisensory nature and functional properties of the neural structures in primate cortex that are sensitive and responsive to cross-modal stimuli generated from the body and objects located close to the body, and the famous rubber hand illusion which purported to illustrate how the perception and understanding of what counts as one’s body, i.e., our body image, can be manipulated to include foreign, body-part-like, objects such as a rubber hand. This approach was intended to settle age old questions about how the body schema – the system sub-personal sensorimotor system that shapes, facilitates and regulates motor control – is implemented in the brain and address historic confusions about how the body schema should be understood as an explanatory concept, as well as the problems surrounding the body schema and image distinction on the grounds of the persistent conflation between the two concepts. However, after offering several proposals as to how the body schema should be used to organise and interpret the empirical data, the distinction fell out of favour with Spence and his colleagues on the grounds of the very problems they intended to resolve. The proposed solution is an alternative theoretical framework that, I shall argue, never materialised. Instead, the various definitions they disseminate, I will claim, simply serve to further perpetuate the same problems and confusions about the body schema. Thus, the current state of the literature on the body image and schema in cognitive psychology is in dire need of a conceptual framework that would help us situate and interpret the important empirical data. I propose that we revisit the philosophical debates that were inspired by the philosopher Shaun Gallagher as part of his project to provide a conceptual analysis of the body schema and image distinction and vindicate its status as an important explanatory device for the explanatory ambitions of embodied cognition. Gallagher’s analysis opens up important questions about how the sub-personal multisensory processes of the body schema not only facilitate moment-by-moment motor behaviours, but how they shape and optimise motor control across developmental timelines, as well the importance of the embodied configuration of an agent and its particular eco-niche for shaping and facilitating its motor behaviours. The second important argument of the thesis is that the response to Gallagher’s analysis has simply served to suppress the line of research that Gallagher inspired because the questions his analysis raises have been overshadowed by more general disputes between Gallagher and his opponents about the shape an analysis of the body schema from the perspective of embodied cognition should take. As such, potentially promising lines of research in relation to the body schema have since dried up. As part of my attempt to make progress on the issues that are laid out at the first and second stages of the thesis, the third stage will involve an exploration into the seminal Bayesian approach to understanding cross-modal cue optimisation as it applies to object perception (Banks & Ernst, 2002) and the recent extension of this paradigm to the multimodal sensorimotor processes that underpin motor behaviour in action-oriented cognitive science (e.g., Friston, 2010). The conclusion of the thesis is that the move from an embodied to an action-oriented analysis of the body schema, and the conceptual distinction of which it is part, provides us with the right kind of theoretical resources to begin to pursue fruitful avenues of research that allow us to begin to address the questions set out by Gallagher’s analysis whilst avoiding (some of) the pitfalls that beset the embodied approach. In the final chapter I use this model of the body schema to illustrate how it can provide the basis for working back up towards a comprehensive theory of the body image and schema distinction, which I then bring to bear on current, as-yet-unaddressed, issues in developmental psychology.

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45

Gårdh, Victor. "Brand Heritage : Helping Strengthen the Brand Identity of Husqvarna Motorcycles." Thesis, Jönköping University, JIBS, EMM (Entrepreneurship, Marketing, Management), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-9825.

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<p>Abstract:</p><p>Purpose: The purpose of this thesis is to learn how brand heritage and retro brands can help HQM strengthen their brand identity.</p><p>Background: Companies with a long history have a strategic choice to make re-garding the use of their heritage in marketing communications. Such companies also enjoy a history of interesting products, for which some may exist the possibility for a retro relaunch. Husqvarna is such a company, which made it interesting to find out how these two strategic tools can or cannot strengthen the studied company‘s brand identity.</p><p>Method: Through an inductive and exploratory case study with interviews of the personnel at Husqvarna Motorcycles, Italy, three theoretical areas emerged to be researched, brand identity, brand heritage and retro brands. The latter two required the help of real life examples for better understanding. The analysis had a deductive approach where the studied theory was applied to the companies, and conclu-sions were drawn from the accumulated knowledge to help streng-then the brand identity of Husqvarna Motorcycles.</p><p>Conclusions: HQM is a brand with heritage in the process of taking a strategic de-cision to use its heritage as a tool to strengthen the brand identity, hence on the way to become a heritage brand in the true meaning of the definition. As the oldest brand on the market, HQM can use its heritage to differentiate itself from the competition, creating uni-queness impossible to copy. A retro product can be a useful vehicle to carry the newly uncovered heritage to surface. With the help of theory and a real life example, a contender within the historical company product portfolio was recognized. Finally, the band identi-ty as stated by HQM was redefined according to the findings.</p>

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46

Daronch, Cláudia. "Medidas de EEG evocadas por tarefas de simulação de ação relativas aos treinamentos de indivíduos com habilidades percepto-motoras distintas (bailarinas x voleibolistas)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/79521.

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Executantes habilidosos desenvolvem uma capacidade de perceber e processar uma vasta quantidade de informações com velocidade e precisão, bem como o de realizar ajustes eficientes quando necessário (Schmidt e Wrisberg 2001). Corticalmente, para obter esse controle mais refinado, a integração sensoriomotora é fundamental. Essa integração consiste no contínuo processamento, pelo sistema motor, das aferências sensoriais que preparam para o ato motor e melhoram a execução de atividades de controle motor fino (Minc et al., 2010). Atividades físicas que diferem exatamente em relação a como seus praticantes necessitam processar as informações sensoriais para gerar o movimento, devem resultar em integrações sensoriomotoras distintas. Este estudo tem como objetivo analisar a atividade eletroencefálica de indivíduos com habilidades percepto-motoras distintas (indivíduos altamente habilidosos com treinamento em dança/TD e treinamento em vôlei/TV), evocados por tarefas de simulação de ação. A amostra do presente estudo foi intencional e composta por 14 participantes destros, cada grupo foi constituído por 07 mulheres com idade entre 18 anos e 29 anos. Através de EEG, foram extraídos os parâmetros de média de energia (processamento cortical ao longo do tempo), amplitude (número de elementos neuronais envolvidos na tarefa) e frequência (ritmo oscilatório predominante) na banda alfa e gama do sinal cerebral nos pontos C3, C4, Cz (córtex motor primário), F3 (área motora suplementar esquerda), F7 (córtex pré-motor esquerdo), P3, P4 e Pz (córtex parietal), evocados por tarefas envolvendo a observação e imaginação de gestos específicos dos dois treinamentos e gestos considerados como neutros. Os principais resultados encontrados forneceram evidências de que o grupo TD apresentou, nas tarefas de dança, um maior processamento cortical ao longo do tempo nos pontos referentes ao córtex motor primário (Minc et al., 2010), córtex pré-motor (Freund e Hummelsheim, 1984) e área motora suplementar (Serrien et al.,2002) esquerdos; maior número de elementos neuronais envolvidos na tarefa no ponto referente ao córtex motor primário esquerdo; diferenças na principal componente da frequência no ritmo alfa no córtex motor primário esquerdo; e diferenças na principal componente da frequência no ritmo gama no córtex motor primário direito. Nas tarefas referentes ao treinamento em vôlei, o grupo TV apresentou menor processamento ao longo do tempo nos pontos parietal (Wolpert et al., 1998); menor número de elementos neuronais envolvidos na tarefa nos pontos referentes aos córtices motor primário e pré-motor esquerdos e diferença na principal componente da frequência no ritmo gama no córtex motor primário esquerdo. Nas tarefas consideradas como neutras foram encontradas diferenças entre os grupos no córtex motor primário direito no ritmo alfa e no córtex parietal direito no ritmo gama. Os resultados encontrados no presente estudo nos parâmetros que representam o processamento cortical, que refletem o número de elementos neuronais envolvidos na tarefa e que representam o ritmo oscilatório predominante demonstraram claramente que as regiões corticais envolvidas na integração sensoriomotora apresentaram diferenças na forma como os dois grupos processaram a informação sensorial e prepararam o gesto motor. Tomados em conjunto, esses resultados demonstram que cada grupo apresentou um padrão constante de processamento sensoriomotor, independente da tarefa. Essas evidências nos permitem concluir que indivíduos com diferentes habilidades percepto-motoras apresentam integrações sensoriomotoras distintas.<br>Skilled performers develop an ability to perceive and process a vast amount of information with speed and accuracy, as well as to perform efficient adjustments when necessary (Schmidt and Wrisberg 2001). Cortically to achieve this finer control, sensorimotor integration is the key. This integration consists in continuous processing, by the motor system, the sensory afferents that prepare for the motor act and improve the performance of activities for fine motor control (Minc et al., 2010). Physical activities that differ over exactly how its practitioners need to process sensory information to generate movement should result in distinct sensorimotor integration. This study aims to analyze the electroencephalography activity of individuals with perceptual-motor skills (highly skilled individuals with training in dance/TD and training in volleyball/TV) evoked by action simulation tasks. The study sample was intentional and composed of 14 right-handed participants; each group consisted of 07 women aged between 18 and 29 years. Through EEG were extracted parameters mean energy (cortical processing over time), amplitude (number of neural elements involved in the task) and frequency (oscillating rhythm predominant) in alpha and gamma bands in the brain signal points C3, C4, Cz (primary motor cortex), F3 (left supplementary motor area), F7 (left premotor cortex), P3, P4 and Pz (parietal cortex), evoked by tasks involving observation and imagination of specific gestures of both training and gestures considered neutral. The main results provided evidence that the TD group presented the tasks of dance, a higher cortical processing over time in points for the primary motor cortex (Minc et al., 2010), left premotor cortex (Freund and Hummelsheim, 1984) and left supplementary motor area (Serrien et al. 2002); greater number of neural elements involved in the task at point for the left primary motor cortex; differences in the main frequency component of the alpha rhythm in the left primary motor cortex , and differences in the main component of the frequency gamma in the right primary motor cortex. In tasks relating to training volleyball, VT group showed lower processing over time at parietal points (Wolpert et al. 1998); smaller number of neural elements involved in the task at points related to left primary motor cortex and left premotor and main component difference in the frequency gamma in the left primary motor cortex. In the tasks considered neutral differences were found between groups in the right primary motor cortex in the alpha rhythm and in the right parietal cortex in the gamma rhythm. The results found in this study at the parameters that represent the cortical processing, that reflect the number of neuronal elements involved in the task and which represent the predominant rhythm oscillatory clearly demonstrated that cortical regions involved in sensorimotor integration showed differences in how the two groups processed sensory information and prepared the gesture motor. Taken together, these results demonstrate that each group had a consistent pattern of sensorimotor processing, regardless of the task. This evidence allows us to conclude that individuals with different perceptual-motor skills have distinct sensorimotor integration.

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Tóth, Balázs. "Two-phase flow investigation in a cold-gas solid rocket motor model through the study of the slag accumulation process." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210575.

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The present research project is carried out at the von Karman Institute for Fluid Dynamics (Rhode-Saint-Genèse, Belgium) with the financial support of the European Space Agency.<p><p>The first stage of spacecrafts (e.g. Ariane 5, Vega, Shuttle) generally consists of large solid propellant rocket motors (SRM), which often consist of segmented structure and incorporate a submerged nozzle. During the combustion, the regression of the solid propellant surrounding the nozzle integration part leads to the formation of a cavity around the nozzle lip. The propellant combustion generates liquefied alumina droplets coming from chemical reaction of the aluminum composing the propellant grain. The alumina droplets being carried away by the hot burnt gases are flowing towards the nozzle. Meanwhile the droplets may interact with the internal flow. As a consequence, some of the droplets are entrapped in the cavity forming an alumina puddle (slag) instead of being exhausted through the throat. This slag reduces the performances.<p><p>The aim of the present study is to characterize the slag accumulation process in a simplified model of the MPS P230 motor using primarily optical experimental techniques. Therefore, a 2D-like cold-gas model is designed, which represents the main geometrical features of the real motor (presence of an inhibitor, nozzle and cavity) and allows to approximate non-dimensional parameters of the internal two-phase flow (e.g. Stokes number, volume fraction). The model is attached to a wind-tunnel that provides quasi-axial flow (air) injection. A water spray device in the stagnation chamber realizes the models of the alumina droplets, which are accumulating in the aft-end cavity of the motor.<p><p>To be able to carry out experimental investigation, at first the the VKI Level Detection and Recording(LeDaR) and Particle Image Velocimetry (PIV) measurement techniques had to be adapted to the two-phase flow condition of the facility.<p><p>A parametric liquid accumulation assessment is performed experimentally using the LeDaR technique to identify the influence of various parameters on the liquid deposition rate. The obstacle tip to nozzle tip distance (OT2NT) is identified to be the most relevant, which indicates how much a droplet passing just at the inhibitor tip should deviate transversally to leave through the nozzle and not to be entrapped in the cavity.<p><p>As LeDaR gives no indication of the driving mechanisms, the flow field is analysed experimentally, which is supported by numerical simulations to understand the main driving forces of the accumulation process. A single-phase PIV measurement campaign provides detailed information about the statistical and instantaneous flow structures. The flow quantities are successfully compared to an equivalent 3D unsteady LES numerical model.<p><p>Two-phase flow CFD simulations suggest the importance of the droplet diameter on the accumulation rate. This observation is confirmed by two-phase flow PIV experiments as well. Accordingly, the droplet entrapment process is described by two mechanisms. The smaller droplets (representing a short characteristic time) appear to follow closely the air-phase. Thus, they may mix with the air-phase of the recirculation region downstream the inhibitor and can be carried into the cavity. On the other hand, the large droplets (representing a long characteristic time) are not able to follow the air-phase motion. Consequently, a large mean velocity difference is found between the droplets and the air-phase using the two-phase flow measurement data. Therefore, due to the inertia of the large droplets, they may fall into the cavity in function of the OT2NT and their velocity vector at the level of the inhibitor tip.<p><p>Finally, a third mechanism, dripping is identified as a contributor to the accumulation process. In the current quasi axial 2D-like set-up large drops are dripping from the inhibitor. In this configuration they are the main source of the accumulation process. Therefore, additional numerical simulations are performed to estimate the importance of dripping in more realistic configurations. The preliminary results suggest that dripping is not the main mechanism in the real slag accumulation process. However, it may still lead to a considerable contribution to the final amount of slag.<p><br>Doctorat en Sciences de l'ingénieur<br>info:eu-repo/semantics/nonPublished

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Requena, Coda Daniela, and Vásquez Claudia Paola Serpa. "Autocompasión e imagen corporal en jóvenes con discapacidad motriz de centros de rehabilitación de Lima Metropolitana." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653508.

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Introducción: El propósito del estudio fue determinar la relación entre la autocompasión y la imagen corporal en jóvenes con discapacidad motriz. Método: Se utilizó el inventario de Autocompasión (SCS) de Javier García Campayo (2014) y el cuestionario de Imagen Corporal Para Personas en Situación de Discapacidad Física (PICDF) de Botero y Londoño (2014). La muestra estuvo conformada por 172 jóvenes de ambos sexos con discapacidad motriz, cuyas edades fluctuaron entre 16 y 25 años quienes reciben terapias en centros de rehabilitación de Lima Metropolitana y poseen diferentes tipos de discapacidad motora y diferentes niveles de afectación, de los cuales el 57.6% son hombres y el 42.4% mujeres. El tipo de investigación es cuantitativa con un diseño transversal y correlacional. Resultados: Dentro de los principales resultados se hallaron relaciones significativas entre las dimensiones de Autocompasión e Imagen Corporal. Además, el resultado comparativo de la variable Autocompasión respecto al sexo, conlleva a una mayor exploración en futuras investigaciones. Conclusión: Los resultados de la investigación reflejan correlación entre las variables de estudio, lo que conlleva a profundizar en dimensiones de connotación positiva que fomenten programas de mejora, para que las personas con discapacidad puedan mejorar su calidad de vida, ya que en ellos no solo se deberían de considerar los factores médicos o educativos.<br>Background: The purpose of the study is to determine the relationship between self-compassion and body image among young people that suffer from motor disability. Methodology: The self-compassion inventory (SCS) by Javier Garcia Campayo (2014) was used, as well as the questionnaire that measured Body Imagen in People who Suffered from Physical Disability (PICDF) by Botero and Londoño (2014). The sample was composed of 172 young adults, males and females with motor disability, whose ages fluctuated between 16 and 25 years, who receive therapy in rehabilitation centers with Lima City, and why suffer from different levels of motor disability and degree of affection, of which 57,6% are men and 42,4% are women. The design of the study is quantitative, transversal, and correlational. Results: Within the main results, significant relationships between the dimensions of self-compassion and body image. Conclusion: Furthermore, the comparative results of the self-compassion variable regarding gender, leads to deepen in positive connotation dimensions that encourage improvement programmers, so that disabled people can improve their quality of live, due to the fact that not only medical or educational factors should be considered when evaluating them.<br>Tesis

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Su, Hao. "Force Sensing and Teleoperation of Continuum Robot for MRI-Guided Surgery." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/156.

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Percutaneous needle placement, a minimally invasive procedure performed dozens of millions in the U.S. each year, relies on dedicated skill and long-term training due to difficult control of needle trajectory inside tissue and mental registration of images to locations inside the patient. Inaccurate needle placement may miss cancer tumors during diagnosis or eradicate healthy tissue during therapy. MRI provides ideal procedure guidance with the merit of excellent soft tissue contrast and volumetric imaging for high spatial resolution visualization of targets and surgical tool. However, manual insertion in the bore of an MRI scanner has awkward ergonomics due to difficult access to the patient, making both training and intervention even harder. To overcome the challenges related to MRI electromagnetic compatibility and mechanical constraints of the confined close-bore, a modular networked robotic system utilizing piezoelectric actuation for fully actuated prostate biopsy and brachytherapy is developed and evaluated with accuracy study. To enhance manipulation dexterity, two kinds of steerable continuum needle robots are developed. The asymmetric tip needle robot performs needle rotation and translation control to minimize tissue deformation, and increase steering dexterity to compensate placement error under continuous MRI guidance. The MRI-guided concentric tube robot is deployed to access delicate surgical sites that are traditionally inaccessible by straight and rigid surgical tools without relying on tissue reaction force. The master-slave teleoperation system with hybrid actuation is the first of its kind for prostate intervention with force feedback. The teleoperation controller provides the feel and functionality of manual needle insertion. Fabry- Perot interferometer based fiber optic force sensor is developed for the slave manipulator to measure needle insertion force and render proprioception feedback during teleoperation.

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Svensson, Johan. "Mätning av skärgradshöjd på stål." Thesis, KTH, Data- och elektroteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188476.

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Idag beskärs en stålrulle inom stålindustrin i ett skärverk, stålrullarna delas tillmindre delband med dålig kontroll av skärgradshöjdens kvalitet. Stickprover tas manuelltvilket endast blir ett fåtal stickprover på en stålrulle som har 150 delband ochär 30 kilometer i längd. En hål omsändning för en stålrulle kostar upp mot en miljonkronor och har en negativ klimatpåverkan. En mjukvaruprototyp för detektering avskärgradshöjd med en referenslinje togs fram. Prototypen innehöll en ljussensor, tvåmotorer, en PC och en prototypkonstruktion. Varje uppgift i programvaran tilldeladesen egen tråd. Operativsystem, trådar och algoritmer prestanda testades för mätningav exekveringstider och periodtider. Resultatet visade att en skärgradsdetektorvar möjlig att realisera. Algoritmen för skärgradshöjd med referenslinje detekteradeskärgradshöjden där amplituden var tillräckligt stor.<br>Today, a steel roll is cut within the steel industry in a cutting factory, the steel rollsare divided to smaller part bands with poor control of the burr height quality. Samplesis taken manually, the amount of samples is too low to know the quality of thesteel roll, the steel rolls can be divided up to 150 times and the length will be 30 kilometers. A whole resend for one steel roll costs up against a million SEK and has anegative climatic impact. One software prototype for detection of burr heights witha reference line was programmed. The prototype contained one light sensor, two motors,a PC and one prototype construction. Each task in the software was allocatedan own thread. Operating systems, threads and algorithms was performance testedfor measurement of execution times and period times. The result showed that a burrheight detector where possible to implement. The algorithm could detect burrheights that were too large related to its reference line.

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