Rozprawy doktorskie na temat „Swimming device”
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Bunker, Kristine (Kristine Alina). "Propeller based human powered swimming device". Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92601.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 31).
Currently the only human powered swimming device widely sold on the market are swim flippers. However, flippers are not efficient for the human body, and there is a potential to increase the speed while swimming with a device. This thesis is the planning, design, construction, and prototyping of a new human powered swimming device which increases human efficiency and speed in water. This device uses a squatting motion to drive counter rotating propellers up and down a threaded shaft creating the propulsion force to move the swimmer forward. The design of this device is primarily geared towards scuba divers and swimmers moving beneath the water surface. Through various tests we were able to prove that the design concept is valid, but alterations are still necessary to reach optimal speed. One such improvement would be enlarging the size of the propeller to increase the force generated with each leg thrust.
by Kristine Bunker.
S.B.
Anderson, Megan, i n/a. "Performance and Physiological Monitoring of Highly Trained Swimmers". University of Canberra. Health Sciences, 2006. http://erl.canberra.edu.au./public/adt-AUC20070717.115408.
Pełny tekst źródłaSfakiotakis, Michael. "Development and evaluation of an experimental undulating-fin device using the parallel bellows actuator". Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/522.
Pełny tekst źródłaDavey, Neil P., i n/a. "Acquisition and Analysis of Aquatic Stroke Data From an Accelerometer Based System". Griffith University. School of Microelectronic Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20061003.153043.
Pełny tekst źródłaDavey, Neil P. "Acquisition and Analysis of Aquatic Stroke Data From an Accelerometer Based System". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/365755.
Pełny tekst źródłaThesis (Masters)
Master of Philosophy (MPhil)
School of Microelectronic Engineering
Full Text
Mazumdar, Anirban. "Maneuverability and heading control of compliant biomimetic swimming devices". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40451.
Pełny tekst źródłaIncludes bibliographical references (leaves 63-64).
Biomimetic swimming devices that employ compliant mechanisms have shown promise as an alternative to current biomimetic design approaches that involve the use of complex mechanisms. The additional stealth, ruggedness, and efficiency of this approach means that such devices could perform important tasks such as reconnaissance and underwater mapping. Many of these applications also require high levels of maneuverability and closed-loop control. However, maneuverability and heading control are two areas that are relatively unexplored with regard to such devices. Therefore, in order to study maneuverability and control, this thesis outlines a simple dynamic model to predict the maneuvering behavior of compliant biomimetic swimming devices. A comparison of the model predictions with experimental data is also presented. Lastly, the dynamic model is used to successfully design, simulate and implement a compass-based heading control system.
by Anirban Mazumdar.
S.B.
Katsamba, Panayiota. "Biophysics of helices : devices, bacteria and viruses". Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283006.
Pełny tekst źródłaWizer, Rossane Trindade. "Influência da utilização de flutuadores na aquisição de habilidades aquáticas". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/81564.
Pełny tekst źródłaThe present study was designed to analyze the influence of flotation devices (armbands) on the aquatic abilities acquisition, by comparing two groups of children without early experience in aquatic abilities. Seventeen children (ages up from 36 to 47 months) composed the sample. An eight-child group took part of the classes using floats (with flotation devices –WFl) and the second group, with by nine children, did it without the usage of floats (no flotation devices – NFl). Both group of children participated of the intervention for eight weeks, at a two-30-minute class per week basis. The Erbaugh Scale was used on two different occasions to assess the aquatic abilities acquisition: the pre-intervention period and pos-intervention period. For data analysis it was used descriptive statistics (median, minimum and maximum values) and comparison tests for non-parametric data (Wilcoxon and U de Mann-Whitney Test). No significant differences between the two groups were found, when assessed regarding the sum of the tasks. However, in the three tasks that constitute the displacements, and yet the jumping tasks, the NFl group presented better results. Though the final results demonstrated a level of superiority for the NFl group over the WFl group in some of aquatic abilities, flotation devices cannot be despised, because this type of equipment offer more possibilities of interaction with the aquatic environment, and they work as a motivational tool for learning, especially for the children showing insecurity towards the aquatic environment.
Lin, Wei-Chen, i 林暐晨. "Implementation of The Swimming Status Recognition Using Android Device". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/53613896906151336907.
Pełny tekst źródła朝陽科技大學
資訊與通訊系
104
In this thesis, we propose a recognition method to determine human swimming situation. In recent year, the triathlon event is very popular, to avoid athletes went into shock suddenly and no one found the situation in crowded environment, so we performed several calculation formula to collect swimming data, these formula contains Mean, Standard deviation, Kurtosis, Skewness, Correlation, Signal Magnitude Area and Variation which can be judgment swimming state, a method that can be record human various action with smartphone device, according to compare with these calculation formula, in our experiment that we find one of good formula to separate swimming state by Standard deviation, we can avoid lots of accident which is shock suddenly in swimming situation. In this paper, we propose some kind of acceleration algorithm method by G-sensor to calculate human is swimming or stopped. Keywords: Android device, G-sensor, Acceleration, Swimming status recognition.
Huag, Che-Nan, i 黃哲男. "Conceptual Design of a Learning Device for Breaststroke Swimming". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/43xx2g.
Pełny tekst źródła國立臺北科技大學
機電整合研究所
95
Swimming is one kind of sports and exercises, which is very good to health. So far, there is no learning device for swimming. The swimming pools are not enough and the available open hours for most swimming pools are not all the year round. It is, therefore, inconvenient for the beginners and persons who take swimming as a regular exercise as well. This thesis presents a new design of learning/exercise device for learning swimming and swim exercise without swimming pools. It could increase the convenience of learning, exercising and rehabilitating. Firstly, we analyzed the paths of hands’ and legs’ motions for breaststroke swimming. The results of this analysis are used to synthesize the required cam mechanisms to perform such specified motions and to guide the swimmers to follow the exact paths of hands and legs. This design uses Pro/Engineer Wildfire 2.0 software to do dimensional synthesis. Through the simulations in Pro/Engineer Wildfire 2.0, the design requirements and its feasibility have been confirmed.
Chang, Ping-Wen, i 張秉文. "Conceptual Design of an Exercising Device for Breaststroke Swimming". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/7ba342.
Pełny tekst źródła國立臺北科技大學
機電整合研究所
97
Swimming, one kind of sports and exercises, is very good to health and feasible for all people as well. So far, there is no exercising device for swimming, and the swimming pools are not enough and the available open hours are limited as well. The available time for outdoors swimming pools are dependent on the weather. Therefore, it is very inconvenient for the swimming-lovers to workout by swimming. This study presents a new conceptual design of exercising device for breast stroke swimming. Firstly, calculate the resisting forces of a swimmer during swimming in breast stroke to design the required loading device. Then, design the required mechanism for this novel exercising device which consists of linkages, gears and cams. This design uses SolidWorks software to design all the parts and assemble the whole device. The feasibility of this completed device has been confirmed through the simulation in SolidWorks software and a simple prototype of this device.
Lien, Kuo-Lin, i 連國霖. "The Design and Simulation of Swimming Training Device on Freestyle Stroke". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/73254998482403009026.
Pełny tekst źródła國立交通大學
機械工程系所
102
Swimming is a quite healthy sport, but there are many problems needed to overcome during the learning process. If we can let people familiar with the movements of swimming through a training mechanism in advance, people can have better efficiency in learning swimming in water. In freestyle swimming, there are 70% of main propulsive forces is applied by arms. Through the analysis of the swimming movements of many excellent athletes, we found that most of them use S-shape stroke and I-shape stroke, and the S-shape stroke is more beneficial to bring efficient force in sculling process, but hard to control. This study reports the standard sculling trajectory and the assessments by biomechanics method, and the design of a functional training mechanism for the novices or redressing the posture for swimmers. This study is consist of four main subject, respectively are: (1) Editing 3D trajectory in animation software 3ds Max、(2) simulating tension of muscle in biomedicine software OpenSim、(3)designing sculling training mechanism and (4) deriving mechanism kinetics. We employ animation software to editing 3D trajectory, and refer to the trajectory of the freestyle champion to establish standard trajectory. Then, we use biomedicine software to calculate the static tension of muscle in moving process, and verify if the established movement in animation software is appropriate or not. According to designing process of this study, we complete the mechanism conforming to expectation of standard swimming posture by controlling the trajectory of the forearm. This study assesses the samples of S-shape stroke and I-shape stroke. In the analysis of mechanism, we check and remove the interferences by institutional dynamic simulation. We calculate the displacement angles by Inverse kinematics, verify the degree of freedom of the mechanism, and afford the applications of drive controller and plan by the displacement angles.
Moura, André Magalhães. "Construction of a biosignal measurement device and its dashboard for swimming training". Master's thesis, 2021. http://hdl.handle.net/10400.6/12025.
Pełny tekst źródłaO âmbito deste trabalho incide no desenvolvimento/criação de um dispositivo de medição de biosinais (acelerometria, eletromiografia e eletrocardiografia) para que através de uma conexão via Bluetooth seja feita a captura destes valores num nadador. Abrange ainda o desenvolvimento de um dashboard que permite ao treinador acompanhar e melhorar os treinos de um atleta.
Wang, Yuan-Jun, i 王元駿. "A Development of a Learning Device and Exercise Equipment for Freestyle Swimming". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/bag9u6.
Pełny tekst źródła國立臺北科技大學
製造科技研究所
96
Swimming is one kind of sports and exercises, which is very good to health and feasible for all people. So far, there is no learning or exercising device for swim. In addition, the outdoor swimming pools are not enough and their opening hours are limited as well. It is, therefore, inconvenient for the beginners and the exercisers. This paper presents a conceptual design of learning device for freestyle swimming. It could guide the required coordinated motion of hands and feet for the beginner. Firstly, we analyzed the paths of hands’ motion and path for freestyle from a motion picture with PhotoImpact software. The results of this analysis are used to synthesize the required cam mechanisms to guide the users to follow the motion of hands and legs. This design uses Pro/ENGINEER software to design parts and assemble those parts into the device. The feasibility of this completed device, which consists of cams, has been confirmed through the dynamic simulation in Pro/ENGINEER software. Regarding the exercising device of swimming, all available existing devices or in the patents do not provide the correct path of hands and legs in freestyle swimming for the users. Even though providing correct paths for exercising device is not so important, this function could be useful for the user to improve their swimming skill, and therefore it could optimize the exercising device’s function. The other purpose of this study is to design an exercising device in accordance with the paths obtained and the loads of freestyle swimming. A novel design of exercising device has been presented. Through the dynamic simulation in Pro/ENGINEER, its feasibility has been confirmed.
Subtil, João Eduardo Castro Campos Brito. "Postoperative cares after tympanostomy tubes for chronic otitis media with effusion". Doctoral thesis, 2019. http://hdl.handle.net/10362/60499.
Pełny tekst źródłaABSTRACT: Tympanostomy tube insertion is the second most common surgery in children, and is mostly indicated for recurrent otitis media, or for chronic otitis media with effusion (OME). Almost every surgeon prescribes water precautions after surgery because of fear of water causing middle ear inflammation. These precautions include at least wearing ear plugs and head bands while swimming, showering or bathing. However, the evidence for such pleas has been questioned. Some authors, weighting also the impact on quality of life, economic burden, and the weak evidence of benefice from such precautions, have been dropping these measures. We proposed to evaluate how deep must one submerge the head to allow water passing through the tube in the tympanic membrane; to evaluate whether such precautions have relevant effect on quality of life; and whether there is any difference between prescribing water precautions or not. Using a computerized fluid dynamics model, we found that on reasonable depths and common conditions, water is not passing the ventilation tube. With this model we determined that including the auditory (pharyngotympanic) tube mechanism in the model is critical. Secondarily, we also learned, using the model, that on surface conditions, increasing the external auditory canal (external acoustic meatus) pressure pushes the liquids on the external auditory canal through the tube, and this is enlightening to the understanding of topical therapy with ear drops. With a randomized controlled trial, we compared two groups with and without protection when exposed to water, and found that children with OME operated with ventilation tube insertion improved their global quality of life. This improvement is significant, irrespective of the season of surgery, water activities frequency, or gender. It is also significant whether water protection is prescribed or not, and both groups (with and without protection) improved quality of life significantly after surgery, and with no observed statistical difference, meaning no impact from protection cares. Also, from this randomized controlled trial, we did not observe a difference in the prevalence of otorrhea after myringotomy with tubes for otitis media with effusion when prescribing or not water protection. And otorrhea incidence shows no apparent association with water exposure in our study population, but it does so with upper respiratory tract infection. These results support the recent guidelines from the American Academy of Otorhinolaryngology, which discourages the routine use of water protections in children with tympanostomy tubes.