Dissertations / Theses on the topic 'Precision movements'
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Fleming, Peter Mark. "High precision EDM for the monitoring of surface movements." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328399.
Full textHollands, Mark Andrew. "Visuomotor control strategies for precision stepping in man." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389118.
Full textMantel, Gerardus Wilhelmus Henricus. "The role of the corticomotor system in precision finger movements." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235921.
Full textMonaco, Simona <1978>. "Contribution of Vision and Proprioception to the Precision of Reaching Movements." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1540/.
Full textWong, Yvonne, and University of Lethbridge Faculty of Arts and Science. "Precision grasping in people : a detailed analysis of the central and external properties of precision grasping from the young to the elderly." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2004, 2004. http://hdl.handle.net/10133/294.
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Krupnik, Viktoria, Ingo Nietzold, Bengt Bartsch, and Beate Rassler. "The effect of motor-respiratory coordination on the precision of tracking movements." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-192035.
Full textCannon, Jesse R. "Compliant mechanisms to perform bearing and spring functions in high precision applications /." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd599.pdf.
Full textKuznetsov, Nikita A. "Modulation and Coordination of Respiratory Rhythm with Discrete Finger Movements in Manual Precision Aiming." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1291407910.
Full textKrupnik, Viktoria, Ingo Nietzold, Bengt Bartsch, and Beate Rassler. "The effect of motor-respiratory coordination on the precision of tracking movements: influence of attention, task complexity and training." European journal of applied physiology (2015) 115, 12, S. 2543-2556, 2015. https://ul.qucosa.de/id/qucosa%3A14101.
Full textČáp, Pavel. "Opakovaná nivelace na vodním zdroji Tetčice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225585.
Full textMcCaffrey, Kevin. "Cephalometric regional superimpositions -- digital vs. analog accuracy and precision: 2. the mandible." Thesis, NSUWorks, 2014. https://nsuworks.nova.edu/hpd_cdm_stuetd/19.
Full textBai, Jie. "Robust navigation algorithms for aircraft precision approach, landing and surface movement using global navigation satellite systems." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501434.
Full textThedon, Thibaud. "Amélioration de l'acuité proprioceptive par la stimulation cutanée." Thesis, Montpellier 1, 2010. http://www.theses.fr/2010MON14002.
Full textProprioception can provide spatiotemporal information for calibrating a motor space, adjust the trajectory of movement, balance, direction of movement, and coordination and Inter multiarticulaires. We take from the sensory receptors of information related to the speed of movement, its leadership, its amplitude and its direction. Although the muscles are defined as sensory receptors contributing primarily to provide information proprioceptive receptors in the skin of the tethering of the skin during movement show a capacity to provide redundant information to muscle receptors. However, in view of the contribution of muscle receptors, the weight given to information skin is relatively low except in specific situations where the contribution of muscle receptors is altered as experiencing muscle fatigue or minimized as in the evaluation of the meaning of joint position. The field of sports medicine suggests that different media Injury Prevention im prove proprioceptive acuity by stimulation of cutaneous receptors. It remains to clarify some points, especially how can we stimulate the skin? In three experiments, we tested two methods, pressure and shear forces to improve proprioceptive acuity. Overall our results show an improvement in the adequacy of the information skin by reducing the uncertainty in the choice of this joint position resulting in improved accuracy of our movements. This improvement is independent of pressure level and be linked with the creation of shear force where the skin stretches over with the movement
Kafa, Aziz. "La perception et la précision spatio-temporelle : représentation mentale et production réelle de mouvements synchrones." Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE1125.
Full textOur study focused on the functional similarity between the spatiotemporal perception and production, in real and mental execution of ellipses drawing as a continuous and repetitive task.We hypothesized that the same motor task in mentally or real produced action would generate different patterns of movement (spatiotemporal precision) and different time perceptions.According to the results, it seems that the mental and real modes share the same time scale. The tempo has significantly affected the temporal perception in real and mental mode. Overestimation of time was present in both modes of action.These data support our secondary hypothesis "The amplification of peripheral sensory feedback is likely to facilitate impulse control time despite an execution of continuous movements.The movement characteristics (speed, shape variability, precision spatiotemporal) will therefore be modified by the presence of feedback periphery with impulse nature"
Sommer, Marius. "Effect of timing training in golf and soccer players : skill, movement organization, and brain activity." Doctoral thesis, Umeå universitet, Institutionen för psykologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-86664.
Full textJanzen, Thenille Braun. "Rhythmic movement: The role of expectancy and skill in event and emergent timing." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/47/47135/tde-02122014-164038/.
Full textEstudos recentes sugerem que movimentos rítmicos dependem de dois sistemas distintos para controle do tempo, chamados tempo emergente e discreto. Sugere-se que tempo discreto baseia-se em uma representação interna do tempo intervalar que é marcada por eventos perceptuais evidentes, enquanto tempo emergente origina-se da própria dinâmica dos movimentos contínuous. No entanto, aspectos cruciais da diferença entre esses mecanismos ainda necessitam ser examinados. Esta tese investiga o papel de expectativas e treino no controle temporal de movimentos rítmicos contínuous e discretos. Capítulo 1 introduz as bases teóricas que subsidiam as hipóteses testadas no presente trabalho. Capítulo 2 descreve uma série de cinco experimentos que investigam a importância da retroalimentação auditiva e dos mecanismos de expectativa, e assim examina o efeito de uma perturbação inesperada e transitória no conteúdo do feedback (e.x. altura, timbre, intensidade) na precisão temporal de movimentos rítmicos discretos (i.e. finger tapping). Capítulo 3 expande essa investigação e analisa o efeito de perturbações inesperadas da retroalimentação auditivo em tarefas de movimentos contínuos, como desenhar círculos repetidamente. O papel do treinamento para o controle temporal é foco de discussão nos Capítulos 4 a 6, onde se descrevem um total de quatro experimentos que testam o efeito de expertise e treino na precisão de movimentos em tarefas de finger tapping e desenho de círculos. Mais especificamente, Capítulo 4 compara a performance de músicos e atletas com participantes sem nenhum treinamento nestas áreas a fim de examinar o papel do treinamento no controle motor, enquanto os Capítulo 5 e 6 focam no efeito do treino em música no controle temporal de movimentos rítmicos discretos e contínuous em estudantes de 10 a 14 anos de idade. Capítulo 7 revisa e conclui as discussões propostas com base nos principais resultados descritos neste trabalho. Em suma, os resultados apresentam novas e relevantes informações a respeito da importância de expectativas e do treinamento no controle temporal de movimentos rítmicos, cujas implicações podem contribuir significativamente para áreas relacionadas à pedagogia e reabilitação motora. Além disso, esta tese apresenta novas informações que ampliam modelos atuais sobre os mecanismos envolvidos no controle temporal de movimentos rítmicos demonstrando a importância do papel de expectativas, retroalimentação auditiva e do treinamento para determinar os diferentes mecanismos de expectativa adotados pelo sistema nervoso na execução de movimentos rítmicos
Okazaki, Victor Hugo Alves. "Controle de movimentos rápidos e precisos direcionados a alvos espaciais." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-05062009-080327/.
Full textIn this study it was analyzed the effect of distance, velocity, disc and target width, disc and manipulandum mass, over motor control of a rapid and accurate movement. For such, it was analyzed the kinematic characteristics of the task of launching a disc to a target using a ballistic movement, performed with a manipulandum. Movements were performed on a flat surface and filmed with a high frequency optoelectronic camera. The study was conducted through six experiments with a single group of participants. Analysis of results indicated that models of motor control that has been used to analyze speed-accuracy tradeoff in simpler tasks were not appropriate to explain the observed behavior in the task used. Motor control in the task showed to be dynamic and flexible, regarding the several constraints manipulated. The follow strategies of control were suggested to explain the results: synchronization of the peak velocity and the instant of disc-manipulandum contact, maintenance of the proportion between the acceleration-deceleration phases, greater inertia and minor impact to increase movement stability, and control of velocity and accuracy of independent dimensions. The prediction of Analysis of joint actions showed the particularities of the strategies used by the system on movement as a function of the manipulated variables. Together, this study sequence of experiments allowed for a deeper comprehension of the control strategies used in the control of rapid and accurate movements
Silva, Marcelo Guimarães [UNESP]. "Análise do controle postural e muscular do lançamento de precisão no futebol em condições de dupla-tarefa e fadiga neuromuscular." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/141951.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A coordenação postura e movimento é um importante requisito para realizar tarefas diárias. Para investigar esta coordenação, dois experimentos foram conduzidos. No primeiro, a demanda cognitiva adicional associada ao controle da postura e do movimento foi estimada usando o paradigma da dupla-tarefa. No segundo, foram investigados os efeitos da fadiga muscular de membros inferiores nesta coordenação. Trinta e seis homens adultos, 20 a 30 anos, futebolistas amadores, foram voluntariamente recrutados, vinte para o primeiro e dezesseis para o segundo experimento. A tarefa consistiu em lançar uma bola até o alvo, o mais precisamente possível, com a parte interna do pé. Parâmetros biomecânicos foram analisados: centro de pressão (CP), centro de massa (CM) e atividade eletromiográfica (EMG). Os valores foram comparados por ANOVAs (p=5%). Resultados do primeiro experimento mostraram que a condição de dupla-tarefa produziu uma diminuição na performance e significante aumento no tempo de execução do movimento. Resultados dos deslocamentos do CP e CM mostraram significantes diferenças somente na direção anteroposterior (p<0,05). Análises do sinal EMG mostraram que a condição dupla-tarefa modificou o modo que os ajustamentos posturais antecipatórios (APAs) foram gerados, enfatizando que os processos cognitivo, postural e motor trabalharam dependentemente. No segundo experimento, os resultados mostraram que a eficácia do lançamento diminuiu com a fadiga. Resultados dos deslocamentos do CP e CM mostraram significantes diferenças entre condições, nas direções anteroposterior e médio-lateral (p<0,05). Análises EMG mostraram que em condição de fadiga houve um aumento da atividade dos músculos posturais, ao passo que na análise temporal EMG uma diminuição da ativação ocorreu em relação ao início do movimento. Em conclusão, os resultados de ambos os experimentos sugeriram que uma adaptação funcional resultou numa invariância global dos APAs, e independente da condição, foi aplicada, garantindo desta maneira uma performance relativamente eficaz do movimento.
The coordination of posture and movement is a necessary requirement to perform daily life tasks. To investigate this coordination, two experiments were conducted. In the first, the additional cognitive demand associated to postural and movement control was estimated using a dual-task paradigm. In the second, were investigated the effects of lower limbs muscular fatigue on this coordination. Thirty six adult men, 20 to 30 years old, amateur footballers, were voluntary recruited, twenty to first and sixteen to the second experiment. Participant’s task was to kick a ball with the inside of the right foot, as accurately as possible, toward a target. Biomechanical parameters were analyzed: center of pressure (CP), center of mass (CM) and electromyographic activity (EMG). The values were compared by ANOVAs (p=5%). Results of the first experiment showed that dual-task yielded a decreased kicking performance and a significant increased timing to perform the movement. CP and CM displacements results showed significant differences only in anteroposterior direction (p<0,05). EMG signal analysis showed that dual-task condition modified the way of adjustments postural anticipatory (APAs) were generated, emphasizing that cognitive, postural, and motor processes worked dependently. In the second experiment, results showed that kicking accuracy decreased with fatigue. CP and CM displacement results showed significant differences between conditions, in anteroposterior and mediolateral directions (p<0,05). EMG analysis showed that in fatigue condition, postural muscles were important, mainly for stabilizing the body during the unipodal stance. EMG analysis showed that the fatigue condition was increased activity of the postural muscles, while in the EMG temporal analysis a decrease in activation occurred in the beginning of the movement. In conclusion, the results of both experiments suggested that a functional adaptation resulting in an invariance of overall APAs, whatever the condition, was applied and ensured a relatively efficient performance.
CAPES PDSE: 99999.014828/2013-08
Patil, Chinmaya Baburao 1978. "Robust design of selectively compliant flexure-based precision mechanisms." Thesis, 2008. http://hdl.handle.net/2152/3917.
Full textChoi, Yeong-jun Sreenivasan S. V. "Development of a large displacement flexure based nano-precision XY positioning stage for vacuum environments." 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3117892.
Full textFahle, Manfred. "Limits of Precision for Human Eye Motor Control." 1989. http://hdl.handle.net/1721.1/6001.
Full textChoi, Yeong-jun. "Development of a large displacement flexure based nano-precision XY positioning stage for vacuum environments." Thesis, 2003. http://hdl.handle.net/2152/506.
Full text"Target "templates": How the precision of mental representations affects attentional guidance and decision-making in visual search." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.18673.
Full textDissertation/Thesis
Ph.D. Psychology 2013
Гетманцев, С. В., К. А. Богатырев, В. Г. Богатырь, И. Н. Смирнова, И. Н. Веселова, В. Н. Фарионов, S. Getmantsev, et al. "Дистанционная скорость в гребле на байдарках у юношей." Thesis, 2017. http://eir.nuos.edu.ua/xmlui/handle/123456789/5004.
Full textYoung men in age groups of 11–12 years, 13–14 years, 15–16 years, 17–18 years of various sports qualification specializing in rowing on kayaks were exaniined. According to the method of determining the effect of the training action developed by us, we stiuiied the rates of distance velocity in terms of the tempo, time and speed of one motion, the frequency of movements. On the basis of the conducted researches it is possible to determine the individual characteristics of the athlete's organism and recommend the proposed method for purposeful study and development of one of the components of the physical quality ofspeed – distance speed, formation and improvement of motor abilities. Key words: tempo, time and speed of one movement, frequency of movements.
Обследовались юноши в возрастных группах 11–12 лет, 13–14 лет, 15–16 лет, 17–18 лет различной спортивной квалификации, специализирующиеся в гребле на байдарках. По разработанной нами методике определения эффекта тренирующего действия изучались показатели дистанционной скорости по темпу, времени и скорости одного движения, частоте движений. На основании проведенных исследований можно определить индивидуальные особенности организма спортсменов и рекомендовать предложенную методику для целенаправленного изучения и развития одной из составляющих физического качества быстроты – дистанционной скорости, формирования и совершенствования двигательных способностей.
Yu-Chia, Wang, and 王瑜嘉. "EFFECTS OF CUEING CONDITIONS AND MOTOR EXPERIENCES ON TEMPORAL PRECISION OF SERIAL MOVEMENT." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/95650671260330346508.
Full text國立臺灣體育學院
體育研究所
94
The purpose of this study was to investigate the effects of timing precision of the series of discrete movements for the dance experience under the different cueing conditions of none cue, musical cue, verbal cue, and musical with verbal cue. Forty dancers and 40 non-dancers, healthy college female students, were served as the participants and assigned randomly into one of the four cueing conditions to perform the series of discrete movements for 10 times following the video model. The BioPac MP100 system (2000Hz) with switch keys were used to record and analyze the pressed timings for the first, the fourth, and the eighth trials of the designed series of discrete movements. The pressed times for every trial were used to calculate the accuracy parameters these included constant error, absolute error, variable error, and overall error. 2 (the experiences of dance) �e 4 (cueing conditions) independent two way ANOVA and Duncan’s posteriori comparison were adopted to analyze the statistical differences. The results showed that the dancers were more accuracy and more consistency than non-dancers under none cue condition for the first trial to model (p < .05). The movement time in dancers was faster than non-dancers during the initial stage and the intermediate stage. The constant error was showed no statistical difference in the factor of dance experience after the more practices (p > .05). The analysis of cueing conditions showed that the every component of timing error from high to low was in the following conditions: verbal cue, musical with verbal cue, none cue, and musical cue. It indicated that the experienced dancers had well capabilities for information processing and visual searching to perform the rhythmic series movement more quickly with accuracy and consistency. Additionally, the results showed the condition of music cueing was the most accurate and stabile to enhance the movements timing effectively, and this phenomenon was also appeared in the condition of musical with verbal cue. But the participants trended toward to take the verbal information as a first priority under the condition of musical with verbal cue compared with musical cueing only. This evidenced the verbal cue had the function of guidance for movements timing mainly, and it suggested a movement instructor has to give the verbal cue cautiously to avoid interfere the performer to achieve a task.
RAVALA, KALPANA. "Effect of fluid motion on movement performance and finger-force pattern during manipulation of Containers/Cups filled with Liquid." 2011. http://hdl.handle.net/1993/4845.
Full text"Active and Passive Precision Grip Responses to Unexpected Perturbations." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.18738.
Full textDissertation/Thesis
Ph.D. Mechanical Engineering 2013
Cabot, Perry Edmund. "Relating sediment and phosphorus movement at multiple scales using fallout cesium-137, phosphorus sorption dynamics and precision conservation technology." 2006. http://catalog.hathitrust.org/api/volumes/oclc/85784664.html.
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