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1
Rodrigues, Sergio Tosi. "Visuo-motor coordination in table tennis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ54807.pdf.
Повний текст джерела
2
Paridi, Konstantina. "Emotion regulation in elite table tennis." Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-43287.
Повний текст джерелаАнотація:
There is evidence suggesting that elite athletes cope better with high-intense negative emotions than the non elite athletes. It is unknown, though, whether elites reach such optimal levels because they have better emotion regulation skills (EReg) or a reduced emotional reactivity (EReact). The present study aimed at disentangling EReg and EReact processes using an experimental paradigm in table tennis players. Twenty-nine (14 elite and 15 non elite) table tennis players were tested using the International Affective Picture System (IAPS) to study their emotional responses after viewing low and high intense pictures; they were instructed to use different emotional regulation strategies (distraction or reappraisal) in the experimental phase. Regarding to emotional reactivity differences, results have showed that elite athletes’ negativity ratings were lower than those of the control group, where there were not any significant differences between men and women. Moreover the results about emotional regulation effectiveness showed that non-elite athletes and women responded more strongly to negative images than elite athletes and men but contrary to the emotion regulation hypothesis, no interaction between the group and the instruction was found as they were equally able to reduce negativity by employing emotion regulation strategies.Tidigare forskning visar att elitidrottare är bättre på att reglera hög-intensiva negativa känslor i jämförelse med icke elitidrottare. Det är fortfarande oklart om elitidrottare når dessa optimala nivåer pågrund av bättre emotionsreglering (EReg) eller en lägre emotionell reaktivitet (EReact). Föreliggande studies syfte är att försöka klargöra EReg och EReact processer, genom att använda en experimentell design hos bordtennis spelare. Tjugo nio (14 elit och 15 icke-elit) bordtennis spelare testades med hjälp utav International Affective Picture System (IAPS) för att undersöka deras emotionella responser efter att ha observerat låg och hög-intensiva bilder; de instruerades att använda olika emotion reglerings strategier (distraktion och reappraisal) i experiment fasen. Gällande emotionell reaktivitet visade Resultatet att elitidrottares negativa poäng var lägre än kontrollgruppen, det var inga signifikanta skillnader mellan män och kvinnor. Vidare visade resultat kring emotions reglering att icke-elitidrottare och kvinnor reagerade starkare på negativa bilder än elitidrottare och män, i kontrast till emotion reglerings hypotesen hittades ingen interaktions effekter mellan grupp och instruktionen vilket tyder på att grupperna var lika duktiga på att använda emotions reglerings strategier.
3
Oldham, Kevin M. "Table tennis event detection and classification." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19626.
Повний текст джерелаАнотація:
It is well understood that multiple video cameras and computer vision (CV) technology can be used in sport for match officiating, statistics and player performance analysis. A review of the literature reveals a number of existing solutions, both commercial and theoretical, within this domain. However, these solutions are expensive and often complex in their installation. The hypothesis for this research states that by considering only changes in ball motion, automatic event classification is achievable with low-cost monocular video recording devices, without the need for 3-dimensional (3D) positional ball data and representation. The focus of this research is a rigorous empirical study of low cost single consumer-grade video camera solutions applied to table tennis, confirming that monocular CV based detected ball location data contains sufficient information to enable key match-play events to be recognised and measured. In total a library of 276 event-based video sequences, using a range of recording hardware, were produced for this research. The research has four key considerations: i) an investigation into an effective recording environment with minimum configuration and calibration, ii) the selection and optimisation of a CV algorithm to detect the ball from the resulting single source video data, iii) validation of the accuracy of the 2-dimensional (2D) CV data for motion change detection, and iv) the data requirements and processing techniques necessary to automatically detect changes in ball motion and match those to match-play events. Throughout the thesis, table tennis has been chosen as the example sport for observational and experimental analysis since it offers a number of specific CV challenges due to the relatively high ball speed (in excess of 100kph) and small ball size (40mm in diameter). Furthermore, the inherent rules of table tennis show potential for a monocular based event classification vision system. As the initial stage, a proposed optimum location and configuration of the single camera is defined. Next, the selection of a CV algorithm is critical in obtaining usable ball motion data. It is shown in this research that segmentation processes vary in their ball detection capabilities and location out-puts, which ultimately affects the ability of automated event detection and decision making solutions. Therefore, a comparison of CV algorithms is necessary to establish confidence in the accuracy of the derived location of the ball. As part of the research, a CV software environment has been developed to allow robust, repeatable and direct comparisons between different CV algorithms. An event based method of evaluating the success of a CV algorithm is proposed. Comparison of CV algorithms is made against the novel Efficacy Metric Set (EMS), producing a measurable Relative Efficacy Index (REI). Within the context of this low cost, single camera ball trajectory and event investigation, experimental results provided show that the Horn-Schunck Optical Flow algorithm, with a REI of 163.5 is the most successful method when compared to a discrete selection of CV detection and extraction techniques gathered from the literature review. Furthermore, evidence based data from the REI also suggests switching to the Canny edge detector (a REI of 186.4) for segmentation of the ball when in close proximity to the net. In addition to and in support of the data generated from the CV software environment, a novel method is presented for producing simultaneous data from 3D marker based recordings, reduced to 2D and compared directly to the CV output to establish comparative time-resolved data for the ball location. It is proposed here that a continuous scale factor, based on the known dimensions of the ball, is incorporated at every frame. Using this method, comparison results show a mean accuracy of 3.01mm when applied to a selection of nineteen video sequences and events. This tolerance is within 10% of the diameter of the ball and accountable by the limits of image resolution. Further experimental results demonstrate the ability to identify a number of match-play events from a monocular image sequence using a combination of the suggested optimum algorithm and ball motion analysis methods. The results show a promising application of 2D based CV processing to match-play event classification with an overall success rate of 95.9%. The majority of failures occur when the ball, during returns and services, is partially occluded by either the player or racket, due to the inherent problem of using a monocular recording device. Finally, the thesis proposes further research and extensions for developing and implementing monocular based CV processing of motion based event analysis and classification in a wider range of applications.
4
Karlsson, Michaela, and Alexandra Sandéhn. "Role of timeouts in table tennis examined." Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-38896.
Повний текст джерелаАнотація:
The purpose of the present study was to examine the role of timeouts in competitive elite table tennis in relation to psychological momentum (PM). To that end, archival data from elite top-international matches (N= 48) was firstly examined to gather information on when timeouts are most taken, and whether these have any objective influence on subsequent performance (set outcome and ultimately match outcome). Secondly, similar archival data for Swedish League matches (N= 36) was examined and interviews with elite coaches from the highest Swedish league (N= 6) at these given matches were carried out to gain further knowledge and understanding on the role and use of timeouts in competitive elite table tennis. Findings showed that timeouts were mostly called following a sequence of three consecutive lost points; that is, coaches used timeouts to break negative PM. However, findings also showed that these given timeouts had no objective impact on neither set nor match outcomes; that is, sets and matches were ultimately lost. Future research examining the subjective coach-player experience revolving around timeouts is needed to comprehend potential ‘secondary’ purposes when calling timeouts and, subsequently, understand timeouts role in table tennis fully.
5
ZHANG, LEI, and XI YOU. "The Choice of STIGA Table Tennis Blades : Evidence from China." Thesis, Högskolan Dalarna, Nationalekonomi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-4879.
Повний текст джерелаАнотація:
The purpose of this paper is to investigate how individuals with different characteristics make their choice-decisions when consuming STIGA table tennis blades, which are combinations of various attributes, such as price, control, attack, etc. It is expected that the general trend of choice behavior on this special commodity can be, at least to some extent, revealed. Data were collected using questionnaires sent to registered members of a table tennis club in China. The questionnaires included information and questions about individuals’ monthly income levels, ages, technique styles, etc. A multinomial logit model was then applied to analyze factors determining Chinese consumers’ choice behavior on STIGA table tennis blades. The results indicated that the main element influencing Chinese consumers’ choice of STIGA ping-pong blades was the technique style and other variables did not seem to influence the choice of table tennis blades. These results might be explained by the limited sample size as well as unmeasured and immeasurable factors. Thus, a more extensive research is needed to be conducted in the future.
6
Zhang, Zhiqing. "Biomechanical analysis and model development applied to table tennis forehand strokes." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/24902.
Повний текст джерелаАнотація:
Table tennis playing involves complex spatial movement of the racket and human body. It takes much effort for the novice players to better mimic expert players. The evaluation of motion patterns during table tennis training, which is usually achieved by coaches, is important for novice trainees to improve faster. However, traditional coaching relies heavily on coaches qualitative observation and subjective evaluation. While past literature shows considerable potential in applying biomechanical analysis and classification for motion pattern assessment to improve novice table tennis players, little published work was found on table tennis biomechanics. To attempt to overcome the problems and fill the gaps, this research aims to quantify the movement of table tennis strokes, to identify the motion pattern differences between experts and novices, and to develop a model for automatic evaluation of the motion quality for an individual. Firstly, a novel method for comprehensive quantification and measurement of the kinematic motion of racket and human body is proposed. In addition, a novel method based on racket centre velocity profile is proposed to segment and normalize the motion data. Secondly, a controlled experiment was conducted to collect motion data of expert and novice players during forehand strokes. Statistical analysis was performed to determine the motion differences between the expert and the novice groups. The experts exhibited significantly different motion patterns with faster racket centre velocity and smaller racket plane angle, different standing posture and joint angular velocity, etc. Lastly, a support vector machine (SVM) classification technique was employed to build a model for motion pattern evaluation. The model development was based on experimental data with different feature selection methods and SVM kernels to achieve the best performance (F1 score) through cross-validated and Nelder-Mead method. Results showed that the SVM classification model exhibited good performance with an average model performance above 90% in distinguishing the stroke motion between expert and novice players. This research helps to better understand the biomechanical mechanisms of table tennis strokes, which will ultimately aid the improvement of novice players. The phase segmentation and normalization methods for table tennis strokes are novel, unambiguous and straightforward to apply. The quantitative comparison identified the comprehensive differences in motion between experts and novice players for racket and human body in continuous phase time, which is a novel contribution. The proposed classification model shows potential in the application of SVM to table tennis biomechanics and can be exploited for automatic coaching.
7
Shen, Sanshan. "Stance realization in sports commentary evidence from Chinese table tennis programmes /." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36819505.
Повний текст джерела
8
Bolland, Benjamin James. "Interpersonal communication within the coach-athlete relationship in table tennis dyads." Thesis, University of Leeds, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.713481.
Повний текст джерелаАнотація:
The purpose of this thesis was to explore and further understand the role and significance of interpersonal communication within the context of the coach-athlete relationship. Chapters 1 and 2 review the existing literature pertaining to these two interpersonal concepts and introduce the central frameworks, namely, Fuoss and Troppmann's (1981) model of the communication process, and Jowett and colleagues' (2007) 3 + 1Cs conceptualisation of the coach-athlete relationship, which are operationalised in the three studies presented. Grounded in self-determination theory (SDT; Deci & Ryan, 2000) and guided by Jowett and Poczwardowski's (2007) integrated research model, the first study looked to empirically test the associations between interpersonal communication competence, the quality of the coach-athlete relationship, need satisfaction, and motivation. The actor-partner interdependence model (APIM; Kenny, Kashy, & Cook, 2006) was employed to examine 102 coach-athlete dyads' perceptions of the aforementioned variables. Structural equation model analyses revealed (a) actor effects for coaches and athletes' interpersonal communication competence on their own perceptions of relationship quality, perceptions of relationship quality on their own need satisfaction, and perceptions of need satisfaction on their own motivation, and (b) partner effects for coaches' communication competence on athletes' perceptions of relationship quality, coaches relationship quality on athletes' need satisfaction, and athletes need satisfaction on coaches' motivation. The effects observed, whilst supporting the central tenets of SDT, also reflected the interdependence structures in the coach-athlete relationship, more specifically, they indicated that both the coach and the athlete were dependent on one another for generating positive and adaptive outcomes. The results highlighted the importance of coaches and athletes communicating competently and developing relationships characterised by a mutuality of dependence and high levels of closeness, commitment, and complementarity in satisfying the basic psychological needs and fostering self-determined motivation towards their activity. Importantly, the findings lent empirical support to the notion that relationship partners who possess high levels of interpersonal communication competence (i.e., interpersonal communication skills facilitating effective interpersonal communication) were more likely to experience higher relationship quality (as defined by the 3 Cs) which in turn led to positive adaptive outcomes (need satisfaction and self-determined motivation) for both relationship partners. Study 2 looked to further investigate the nature of the relationship between interpersonal communication and the quality of the coach-athlete relationship. More specifically, it sought to understand how relationship partners conveyed and experienced relationship closeness, commitment, and complementarity, and thus make informed judgements as to the quality of their coach-athlete relationship. Content analysis of the interview transcripts from the 10 independent coach-athlete dyads revealed that coaches and athletes conveyed relationship closeness, commitment, and complementarity through verbal and nonverbal communicative channels. More specifically, utilising an adapted version of Ickes's (2001) unstructured dyadic interaction paradigm, the study found that during their training ground interactions, coaches and athletes' communicative acts often enclosed underlining relational intentions, but dyad members' ability to accurately infer their partners' communicative (relational) intentions (empathic accuracy) was limited, despite dyad members often assuming their intentions had been appropriately interpreted (assumed similarity). Examining the decoding component of interpersonal communication and determining effectiveness in terms of the degree to which partners were able to accurately interpret and internalise their partners' communicative intentions, the findings from Study 2 raised the question, what factors were limiting this process? Study 3 attempted to address this question. Twenty four coaches and athletes from 12 independent coach-athlete dyads were interviewed to elucidate factors they perceived inhibited the effectiveness of interpersonal communication with their partner. Inductive content analysis yielded four higher order themes: Environmental barriers (e.g., noise and accessibility), psychosocial barriers (e.g., power issues and relationship closeness), process barriers (e.g., sending and receiving), and personal barriers (e.g., age, knowledge level, attitude). From a theoretical perspective, the inductive findings generated provided empirical support for Fuoss and Troppmann's (1981) two-way model of communication and its utility as a framework for understanding the effectiveness of interpersonal communication within the context of the coach-athlete relationship. From a practical perspective, whilst it is acknowledged that eliminating these barriers does not necessarily change communication between partners, it does afford guidance on better communication practices. Thus, the findings could help inform intervention programmes, designed to improve coach-athlete communications, which as studies 1 and 2 demonstrate, would likely benefit the quality of the coach-athlete relationship. Collectively, the results of all the studies, their limitations, implications for theory, research, and practice, and future directions are discussed in Chapter 6.
9
Zhang, Peng. "The effects of play practice on teaching table tennis forehand skills." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1211575204.
Повний текст джерела
10
Shen, Sanshan, and 沈三山. "Stance realization in sports commentary: evidence from Chinese table tennis programmes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36819505.
Повний текст джерела
11
Le, Mansec Yann. "Conséquences de la fatigue sur la performance en tennis de table." Thesis, Nantes, 2017. http://www.theses.fr/2017NANT2020/document.
Повний текст джерелаАнотація:
Si les effets délétères de la fatigue neuromusculaire au cours de mouvements simples ne sont plus à démontrer, les effets d’une telle modalité de fatigue au cours de tâches complexes, i.e., poly-articulaires, restent à investiguer. Par ailleurs, il a été démontré que la fatigue mentale pouvait également impacter négativement la performance sportive au cours d’exercices mono-articulaires ou énergétiques. L’objectif de ce travail de thèse visait donc à évaluer l’impact de ces deux modalités de fatigue (mentale et neuromusculaire) sur des paramètres physiologiques (temps de réaction) et techniques (vitesse et précision des balles) associés au tennis de table, ceci afin de mieux comprendre la nature et l’ampleur des altérations pour, in fine, proposer des situations concrètes pour les entraîneurs et/ou préparateurs physiques. Au cours des six études qui composent ce travail de thèse, nous avons évalué la demande de l’activité du joueur en tennis de table au niveau des membres inférieurs (étude préliminaire et étude 1). Par la suite, les études 2 et 3 se sont intéressées aux effets de la fatigue (neuromusculaire et mentale) sur les caractéristiques de la balle. Des altérations différentes ont été mises en évidence selon la nature de la fatigue considérée. Enfin, les études 5 et 6 ont mesuré les effets de ces mêmes modalités de fatigue sur les différentes composantes du temps de réaction. Ces études ont montré que des participants soumis à une tâche mentalement ou physiquement fatigante étaient capables de maintenir un temps de réaction stable. Cependant, les mécanismes permettant ce maintien du niveau de performance étaient différents selon la nature de la fatigue considéréeThe deleterious effects of neuromuscular fatigue during simple movements are well documented. However, the effects of neuromuscular fatigue during complex tasks, i.e., polyarticular movements, are still a matter of debate. Otherwise, it has been demonstrated that mental fatigue could also have a negative impact on sport performance during monoarticular or energetic exercises. This thesis aimed to investigate the effects of both mental and neuromuscular fatigue on physiological (reaction time) and technical (speed and accuracy of the ball) parameters associated to table tennis, in order to propose practical applications for trainers and physical coaches to optimize the performance. This thesis was composed of six studies. In the first two studies, the characterisation of the effort involving the lower limbs during table tennis was performed (preliminary study and study 1). Thereafter, studies 2 and 3 focused on the effects of both mental and neuromuscular fatigue on ball characteristics. The results of these studies showed that mental and neuromuscular fatigue induced alterations of ball characteristics, but these alterations could differ between both fatigue conditions. Lastly, studies 4 and 5 measured the effects of these two types of fatigue on reaction time components. These studies highlighted that when they are mentally or physically fatigued, participants were able to maintain their level of performance. However, the mechanisms to maintain the performance level were different depending on the type of fatigue considered
12
Zhang, Peng. "The Effects of Play Pracice on Teaching Table Tennis Forehand Skills." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211575204.
Повний текст джерела
13
Jing, Xu, and 徐競. "Double of Table Tennis." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/55020486233368347579.
Повний текст джерелаАнотація:
碩士國立體育學院
教練研究所
92
Abstract This report is about my personal viewpoint from the past decades across the strait of the practical attendance of the table tennis competitions. The reason to choose Double as the topic is that double is the best cut-in point for the future Taiwanese table tennis restart. Also, it is worthwhile to discuss further on the technology, strategy and mentality respectively. The motive of writing this report is trying to combine the training theory and the practical experience of the Double so as to upgrade the capabilities of the table tennis coaches’ theory bases and the field training. The purpose is to provide reference for the table tennis coaches and the athletes. This report will start from the specialty of the Double, to realize the differences between the Single and the Double in the theory and the requirements of the special techniques and strategies, then to analyze the merits and the shortcomings of all kinds of matching Double athletes. Further certify the previous theory with the examples of the famous world known Double athletes. Towards the Double technology, aiming at footstep moving, service, service then attack, receiving, receive then attack and other techniques, try to explore by the theory and practical cases.
14
SU, JIAN-LIN, and 蘇建霖. "Analysis of Table Tennis Trajectory." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8m67xk.
Повний текст джерелаАнотація:
碩士崑山科技大學
機械工程研究所
107
In these years, the analysis of sport is devoted by a lot of scientists They present several theories on the static and dynamic analysis of sports. The sports such as car Racing, basketball, billiards, baseball, running, golf etc, are dynamic. and Chess is static. The excellent grades of athletes depend on not good coach and training but also the sports theories This paper simulates and analysis of table tennis trajectory. It includes (1) the simply theoretical analysis, numerical analysis via ANSYS software and experiments on the collision between table tennis and racket. Further, the comparison of the results of the analysis and experiment is made. (2) The aerodynamic analysis on table tennis trajectory in the air is made. (3) the dynamic behavior of the collision between table tennis and table is studied. In the future, if the presented theories are integrated with the action capture and image technologies and the big data analysis, it will be helpful for the researching of more efficient sport.
15
Huang, Chi-Hung, and 黃家宏. "Research and Development of a Folding Table-tennis Table." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/6t5h68.
Повний текст джерелаАнотація:
碩士國立臺北科技大學
機電整合研究所
95
This purpose of this study is to develop a new table tennis table of folding. At first, the folding tables that are familiar in the market, theses, and patents regarding the study were collected and analyzed. According to them, we classified the folding motion of table and discussed the different advantages which were improved and designed. According to the design flow of creative mechanism, we decided mainly the functions firstly. The new type folding table stand on size and functions. The major function was a kind of mechanism that opposite direction so that we expected the fine effect in folding motion. We would synthesize the mechanism to be a practical folding table module after the motion of mechanism completed. The table tennis table in this study utilized the Pro/Engineer to plot the 3D an exploded views and 3D combination of the table. Afterward it was analyzed by Pro/Mechanism and Pro/Mechanica for the motion simulation and verifying and stress analysis respectively. The folding table designs and developments of this task was series done.
16
lung, chiang peng, and 蔣澎龍. "The Different Height of Table Tennis Net on the Three-Part Skills in Table Tennis Competitions." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/50769898829698950924.
Повний текст джерелаАнотація:
碩士中國文化大學
運動教練研究所
91
This research is to probe for the effects of the different height of table tennis net on the three-part skills in table tennis competitions in order to find the most suitable height of table tennis net for rally ball so that we can get the best balance between the splendid performances in games and the keeping the audience. We take fifteen outstanding male table-tennis players in Tainan Table-Tennis Training Camp as study objects, and the average age of them was 19.47, then we divided competition skills into three-parts service attack skill, receive attack skill, and rally ball. We held round robins, total recorded 420 plays, with different height of table tennis net respectively (15.25cm, 16.25cm, 17.25cm, and 18.25cm), and we collected the data of the three-part skills from each round robin and we analyzed them with mean of descriptive statistics, sigma, repeated one-way AVOVA. Results as follows: Using the net which was 18.25cm in height would obviously lower the performance of the service attack skill part.Using the net which was higher than 17.25cm in height would obviously lower the performance of the service attack skill part.Adopting the net which was 18.25cm in height would enhance the performance of the rally ball part. Key words：different height of table tennis net , table tennis competitions, three-part skills
17
Wei, Hsu Ming, and 徐明偉. "Timing A Serve In Table Tennis." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/85655401517807075633.
Повний текст джерела
18
WEI-MING-CHU and 魏銘助. "Automatic Score Device of Table Tennis." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/04100821564500832278.
Повний текст джерелаАнотація:
碩士建國科技大學
電機工程系暨研究所
104
Today, the so-called ping-pong is from the traditional tennis, originated in the late 19th century England, due to the space and weather restrictions, this exercise is moving from outdoor into indoors, and uses the table as a venue, then, slowly transfer into the current ping-pong. In 1998, the Summer Olympus Games make the exercise as an official item in the game; hence, it becomes a popular sport in the world. To watch the ping-pong game closely, we find that all of the score is manually determine by referees, if the player hits a high tough shot, then the score is very difficult to decide, hence, it often cause a competition dispute. According to the mentioned above, the paper design an intelligent scoring system, Firstly, set up the optical sensor on the table tennis to detect the location of the ball. Secondly, vibration sensor in tennis net is established to judge the ball touches the net or not. Finally, use LED panel to display the moving of track for the ball and calculate the score. After the system is developed, it not only can help to get the correct score, but also can let audience watch more clearly live games.
19
XUE, JING-ZE, and 薛景澤. "Motion analysis of table tennis robot." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/htp7du.
Повний текст джерелаАнотація:
碩士崑山科技大學
機械工程研究所
106
Today's table tennis robots are designed from the traditional industrial robots. Those industrial robots are different from the human body structure and do not have training functions. This paper simulates the human body structure including the spine, shoulders, upper and lower arms and wrists to design bionic type mechanical arms, combined with slide rails. The slider is used as a mobile platform for research and analysis. It simulates the six-axis composite movement, and defines its angle and time relationship to establish the equation of motion. Then, with the DH coordinate algorithm, a homogeneous transform matrix is used between two conversions coordinate systems. To assist in motion path planning, a Fortran program is developed for analysis and calculation. In addition, with Simulink-Simscape Multibody multi-body modeling and simulation technology, the 3-D motion of the robot arm and the compound motion of each axis of the mechanism can be simulated and achieved more effective control and simulation. In the future, the system can be combined with action capture and image analysis and big data analysis to plan the best movement. The aerodynamics, collision mechanics and kinematics equations can be used to estimate the trajectory of the ball. This technology can be applied to the training of the table tennis sports. It will provide a great help to the domestic players in the table tennis sports in the future.
20
Tu, mei-hua, and 杜美華. "The Development of Tennis Grip Techniques for Single of Table Tennis." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/42336579319772834598.
Повний текст джерелаАнотація:
碩士國立體育學院
教練研究所
89
The Development of Tennis Grip Techniques for Single of Table Tennis ABSTRACT The purposes of this study were: (1) to develop a suitable statistical table for table tennis game, (2) to find the techniques for tennis grip that can predict the scores, and (3) to offer a table tennis training description for a case to promote his techniques. After reviewed the literature, there were 49 kind techniques selected to develop the statistical table for table tennis game. There were 8 tennis grip athletes and 2 penholder grip athletes used in this study. The eight tennis grip athletes’ former 2-set techniques in their cycle game were recorded to be the predictable variables, and their scores were used to be the criterion variables. The collected data were analyzed by multiple stepwise regression analysis. One of the eight tennis grip athletes was used to be the case study, and the researcher offered the training description for him. After 3-week training, the difference of pre-training and post-training was compared. The findings were as the following: 1.All the techniques developed in the statistical table of table tennis game were necessary to reserve. 2.The more predictable techniques were serve, forehand drive (serve-stage), backhand double-cut (receive-stage), forehand drive (receive-stage), another, forehand double-cut (receive- stage), forehand drive (serve-stage), forehand drive (anti-stage), and forehand drive (receive-stage). 3.After strengthened the more predictable techniques to get scores and improved the techniques that were easy to lose scores, the case had positive training effect. The findings were discussed, and the applications of the study were offered. Additionally, some suggestions were provided for the future studies. Key Words: table tennis, single , techniques of tennis grip
21
Hsu, Min-Chieh, and 許閔傑. "The Study on the Discrapency of How Wii TV Game Table Tennis Teaching and Traditional Table Tennis Pedagogy Affected the Table Tennis Back Hand Swing Techniques Learning Efficiency." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/3dz5vq.
Повний текст джерелаАнотація:
碩士大葉大學
管理學院碩士在職專班
102
This study aimed to discus the differences between Wii Sports table tennis technologies and traditional pedagogies on Table Tennis Backhand Blocking Technique for junior high students. Based on the results and the discussions, the writer compared junior high students’ learning effects on experimental group and the control group after using Wii Sports table tennis technologies. They are given pre-test and data are analyzed by T-test. The results are as follows: 1. Students receiving Traditional Pedagogies (control group) have better learning effect on post-test than pre-test. 2. Students receiving Wii Sports Table Tennis Technologies (experimental group) have better learning effect on post-test than pre-test. 3. After receiving Wii Sports Table Tennis Technologies and Traditional Pedagogies, students’ learning effects have no significant differences. 4. This study finds teaching by Wii Sports Table Tennis Technologies has no direct helpful for students, but teaching by traditional pedagogies has better effects. The findings and the results from this study try to provide more references for physical teachers and researchers in the future, especially for practice teaching.
22
Wang, Chen-Feng, and 王晨峰. "Investigation of Table Tennis Strategy by Three Stage Skill Analysis in Elite Taiwan Early Youth Table Tennis Players." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/60478826821105456214.
Повний текст джерелаАнотація:
碩士國立體育大學
教練研究所
98
The study investigated the table tennis strategy by three stage skill analysis in elite Taiwan early youth table tennis players. Thirty singles players from the top eight teams of the primary school section in the 2009 National Chungzheng Cup Table Tennis Championships participated in this study. Twenty seven games of the subjects were recorded by video and an observation system in sports pedagogy. The gripped mode, three stage skill, and strategy of subjects were assessed by 3 level B coaches. The results showed that all subjects were tennis grips. The average usage frequency for serve and attack stage, receive and attack stage, as well as rally stage was 35.7±9.1%, 39.9±7.4%, and 24.4±14.5%, respectively. The use rates in both serve and attack stage as well as receive and attack stage were high usage. However, the rate in rally stage was low usage. The strategies of subjects in quick attack, quick attack combining top spin, top spin combining quick attack, push, and defense was 6.8%, 6.8%, 76.6%, 6.8%, and 3.3%, respectively. The study demonstrated that the techniques of rally stage in three stage skill for the subjects should improve. The diversification of strategy for elite early youth table tennis players in Taiwan is not enough since the tennis grips and top spin combining quick attack was the major strategy for most players.
23
Wang, Pei-Han, and 王珮翰. "An Automatic Table Tennis Match Umpiring System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/84102573910598795087.
Повний текст джерелаАнотація:
碩士國立中興大學
資訊科學與工程學系
102
The current referee methods of table tennis games rely on the human eye to determine the score. However, fast hitting and the referee’s personal factors may cause misjudgment. Therefore, it is necessary to establish a complete and accurate automated referee system of table tennis games. The most famous related application is Hawk-Eye, to visually track the trajectory of the ball and display a record of its statistically most likely path as a moving image. This article generally applies this concept to a table tennis game. First, use tophat filter to sharpen the edge of the table tennis table. Then, we can apply Morphology and labeling to detect the table tennis table. The part of the table tennis net detection utilizes Morphology and Linear Regression to find the net’s linear equation. After that, we can deduct the background intensities from the foreground intensities to retain the moving objects. And with morphological and regional detection, we can improve the accuracy of table tennis ball center detection. Finally, import the above results which are the table tennis table, the table tennis net’s linear equation, and the table tennis ball center to the automated referee system of table tennis games in order to distinguish score or not. This article uses JVC-GZ-GX1 camcorder to shoot, and compare with the human eye by the following features, which are the accuracy of table detection, ball detection, placement detection, and score. The average accuracies are 0.9919, 0.8488, 0.8460, and 0.8322. Experimental results show that the algorithm proposed in this article has high accuracy.
24
Chen, Yu-Fen, and 陳裕芬. "Mechanics and detection of table tennis balls." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/86056718940721784720.
Повний текст джерелаАнотація:
博士國立高雄應用科技大學
機械與精密工程研究所
103
This paper researches the kinetics of table tennis and the construction of a related detection system. The research content discusses the flow field distribution of forced convection impact on spinning and stationary table tennis balls. This study uses an infrared thermal imager as a research tool. The heat flow visualization of hot air through the spinning ball is used, in experiments, to simulate the flow field characteristics when the table tennis ball is stationary, and with high-speed and low-speed backspin and topspin. In addition, the motion equation of table tennis and the relationship between the stroke acting force, speed of the shot and position are analyzed according to the mechanics principle. The superiority of a spinning ball in table tennis is described, and the method of using speed to resist spin is proposed. In addition, a table tennis ball tabletop placement pressure sensing system and two-dimensional laser beam array table tennis ball placement sensor are developed in this study, which are used to accurately sense the table tennis ball placement on the tabletop, this system is able to quantitatively analyze the tested students’ service, accuracy and stability. Finally, a light sensing system for table tennis service height is developed for judging table tennis players’ service height and stability.
25
Chien, Chien-Hua, and 簡健華. "Biomechanical Analysis of Table Tennis Forehand Drives." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29169049798548514216.
Повний текст джерелаАнотація:
碩士國立臺灣師範大學
體育學系在職進修碩士班
98
The purpose of this study was to investigate the kinematical variations between the movements of forehand drive in straight and diagonal line when receiving topspin and backspin services of elite table tennis male players. Five collegiate elite table tennis male players in Taiwan were served as the participants. Ten Vicon Motion Capture systems MX13+ (250 Hz) were used to collect the movements of forehand drives, and the Vicon Nexus 1.4 soft ware was used to calculate the kinematic parameters. All the variables were tested by Friedman two-way analysis of variance nonparametric statistical test which was calculated by SPSS 17.0, and the post-hoc comparison were calculated by the Excel software, the significant levels as α = .05. The results as follows: The duration time of each phase of the forehand drives were different. The duration time of backswing were significant less while receiving the backspin than receiving the topspin. The duration time of swing forward movement in diagonal line was less than in straight line. In the swing velocity at contact point and the peak velocity of swing, the drive of receiving backspin was faster than receiving topspin. The center of gravity (COG) of receiving backspin drive in straight line was the lowest among the four movements while in the end of backswing, the contact point and the fastest swing point. The relative sagittal distance between the racket and the COG at contact of forehand drive in diagonal line were more than the distance of the straight line. The racket tilt angle was less when receiving the topspin than the backspin. The shoulder axis (upper trunk) rotation of receiving backspin in diagonal line was the greatest among the four different drives, and it was the least while receiving topspin in straight line drive. There were significant differences in the upper and the lower limb joints angle and angular velocities among the four different drives.
26
Guo, Syuan-Jyun, and 郭烜均. "Vision Based Analysis for Table Tennis Game." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/31952192944675420499.
Повний текст джерелаАнотація:
碩士國立東華大學
資訊工程學系
97
Compared with other popular sports, like baseball or basketball, computer analysis for table tennis game is relatively uncommon. We present a vision based system for table tennis for game recording and analysis. The results of our system can provide hints for players, coaches, and audiences for their reference. With the help of motion history, we get the motion features from game video and then find out the connected component of ball candidates. We estimate the ball position in every frame, and overlap the ball components over time to form a ball trajectory. According to the ball positions, we estimate the vertical and horizontal velocities in a ball trajectory. The vertical velocities are used to check the ball hit position. The horizontal velocities and the trajectory shape are analyzed to determine the ball spin direction. Finally, we keep track of the information of the trajectories, hit positions and spin directions, to describe every point in a game. Then we present how to record the content of a game and how to analyze the strategy of a game.
27
Lee, Hung-Pinng, and 李弘斌. "Biomechanical Analysis of Table Tennis Backhand Drives." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/55909843606968377719.
Повний текст джерелаАнотація:
碩士國立臺灣師範大學
體育學系
99
The purpose of this study was to investigate the kinematical variations among the backhand drive in diagonal and straight line when receiving backspin and topspin services. Eight male collegiate elite table tennis players(age: 23±5yrs, hight: 172.5±.6.2cm, weight: 67.1±11.2kg, experience: 13.2±2.7yrs) in Taiwan were served as the participants. Ten Vicon Motion Capture systems MX13+ (250 Hz) were used to collect the movements of backhand drives, and the Vicon Nexus 1.4 & Visual 3D soft ware were used to calculate the kinematic parameters. All the variables were tested by Friedman two-way analysis of variance of non-parametric statistical test which was calculated by SPSS 19.0, and the significant levels as α = .05. The results as follows: The elite collegiate male table tennis players performed backhand drive with the similar height and the similar percentage duration time in diagonal and straight line when receiving backspin and topspin services. It’s not only need lower COM, but also needed the greater racket velocity, swing trajectory angle and racket tilt angle of the contect point in receiving backspin than topspin services. In backswing phase, the rotation angle of shoulder and hip axis were greater in receiving backspin than receiving the topspin services. In the swing phase, the shoulder and the hip axis rotation angles in returning drives to the diagonal were greater than to the straight line. In the joint angle and angular velocity of the upper and lower extremities, due to different spin and direction variations, the main trend showed that the drives for receiving backspin was greater than the topspin; driving return in diagonal were greater than the straight line. Base on the results of this study, we recommen that the table tennis players should increase the preparation movement and ball initial velocity to perform the drives to receive the backspin serves than receive the topspin serves. The players should increase the trunk rotation angle, trunk angular velocity and the angular velocities of the upper and the lower limbs to perform the diagonal line drives in the table tennis game.
28
Lin, Yu-Chiang, and 林宇強. "Recognition of Table Tennis Serve using Kinect." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7trb3t.
Повний текст джерелаАнотація:
碩士國立東華大學
資訊工程學系
106
Vision-based sport analysis becomes a popular research topic these years. The most challenging problem of a table tennis robot is to analyze and predict the trajectory of the table tennis ball. We utilize Kinect to capture the skeleton of the table tennis player. Combining with the detection and tracking of table tennis ball and racket, we recognize the spin serve type and predict the trajectory of the table tennis ball. An individual Support Vector Machine (SVM) is adopted to train the model of each spin serve type and then all the models are used to classify the test data to identify the type of the spin serve. We try to mix different set of features and adjust the size of the training set to optimize the accuracy of the serve type recognition. The accuracy of the recognition results on different player’s postures is compared and discussed.
29
Tsai, Kuei-Lan, and 蔡貴蘭. "The Research on Performance of Wheelchair Table Tennis Players’ Skills and Strategies in Asia & Oceania Table Tennis Championships." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/78151185279512080380.
Повний текст джерелаАнотація:
碩士中國文化大學
運動教練研究所
97
The purpose of this study is to probe into the three technical sections toward the semifinalists of the fifth-grade Asian wheelchair women’s representative skills through the situation of utility rate and hit rate. The researchers adopts the four semifinalists of the fifth grade Asia & Oceania Table Tennis Competition in 2007 as the research interviewers. The semifinal is the researching range and we use the three index evaluation records as our research tool. We analyze and research the obtained information through three sectional index evaluation with empirical mode and stepwise multiple regression analysis statistics. The results of the study show as follows：1. Chang Bian’s index reaching 64.49% is the highest in displaying the hit rate of serve attack section in Asian Wheelchair Women’s semifinalists of the fifth grade. It is a good index. Wei Mei Huei’s index 27.84% is an insufficient index. Gu Gai’s index tops 40.41% in utility rate of serve attack section in three sectional skills and it’s a passing index. Wei Mei Huei’s 25.75% is an insufficient index. 2. The hit rate of catching the serve ball attack section for Ren Guei Shiang is the highest by 71.04% and it’s an excellent index. Wei Mei Huei’s 33.33%is the lowest and it’s a passing index. Wei Mei Huei’s index 40.19% is the highest and a passing index in the utility rate of catching serve balls attck section. Ren Guei Shiang’s 27.62% is the lowest and passing inex. 3. The hit rate in stalemate section for Chang Bian’s 56.75% is the highest and an excellent index, while Gu Gai’s 38.16% is the lowest and it is also an insufficient index. 4. Among the 14 variables from the three sectional technical and tactical skills in Asian wheelchair women’s semifinalists of the fifth grade, we choose the most predictable and representative item is the stalemate mutual attack (X11). 5. The predictable equation of the three sectional skills of active and passive technical and tactical skills is as follows：The regression equation of the original scores reaches： Y=0.02X11＋0.41, and the standardized regression equation is ：ZY=0.80Z11
30
Wei, Jiun-Tung, and 魏君同. "The Influences of Different Table Tennis Ball Colors and Table Tennis Ball Velocities for Reaction Time of Forehand Stroke." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/98115268341998975161.
Повний текст джерелаАнотація:
碩士國立屏東教育大學
體育學系
99
The purpose of the study is to investigate the influences of different table tennis ball colors and table tennis ball velocities for college students’ reaction time of forehand stroke. The participants are two department of physical education college male students in National Pingtung University of education whose dominate hands are right hands, the heights are 178.00±4.24 cm, the weights are 76.25 ± 12.37 kg, 12.00± 2.83 years engaging in a table tennis ball sport, sight visions are normal. The data of parameters in this study will be obtained through LabVIEW 2009 system, and the sensors are including EMG, accelerometer and infrared-detectors. The five different table tennis ball velocities and two different table tennis colors are as the independent variables. The reaction time(RT), premotor RT(PRT), motor RT(MRT) and movement Time(MT) are as the dependent variables to examine by two-way ANOVA repeated measures. The conclusions are as follows: First, the interaction doesn’t exist between the influence of different ball velocities and colors on PRT, Motor RT, RT and MT. Second, the influence on PRT, MRT, RT and MT of different ball velocities is above the statistical significant(p< .05). Third, the influence on PRT, MRT, RT and MT of different colors is below the statistical significant(p> .05). In this study, the velocities is the dominate factor that affects the parameters of RT.
31
Li-Chuan, Huang, and 黃立全. "A Study of Effect of Table Tennis Ball Change for the Secondary School Table Tennis Players in Kaohsiung City." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/zpf78y.
Повний текст джерелаАнотація:
碩士國立高雄師範大學
體育學系
106
A Study of the Effect of Table Tennis Ball Change for the Secondary School Table Tennis Players in Kaohsiung City. Abstract The purpose of the study was to investigate the effect of changing table tennis ball material for the secondary school table tennis players in Kaohsiung City and the differences in sports training of different table tennis players’ background variable. The survey was conducted personally by the researcher, and valid samples of the survey consisted of 197 secondary school table tennis players in Kaohsiung City in 2017.The researcher adopted survey method, and the data were analyzed by descriptive statistics, one-way ANOVA, and Pearson correlation. The statistical result revealed that the effect of table tennis ball change: (1) the influence level of “Physical Fitness” was the highest; (2) there was significant difference of “Tactics” training in different gender in all background variables; (3) “Skill”, “Physical Fitness” and “Tactics” showed positive correlation. In conclusion, the researcher suggests that: (1) The table tennis coaches need to realize the characters of plastic 40+ table tennis ball and bring professional training model into practice; (2) The table tennis coaches need to consider the individual differences of table tennis players and strengthen the training of stamina and rally. Keywords: plastic 40+ table tennis ball, table tennis training, table tennis skill, table tennis stamina, table tennis tactics
32
LIU, CHIEN-JEN, and 劉千仞. "A Study of Table-tennis Forehand Serve Skill between the Improvement of Table and the Table." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/83535871167537964457.
Повний текст джерелаАнотація:
碩士國立台北師範學院
教育政策與管理研究所
93
A Study of Table-tennis Forehand Serve Skill between the Improvement of Table and the Table ABSTRACT The purpose of this study was to examine the influence of different tables on table tennis beginners’forehand serve skill.（The improvement of table L：274cm，W：152.5cm，H：56cm， the table L：274cm，W：152.5cm，H：76cm）. 72 first graders（39 boys and 33 girls）of Kuo-tai primary school in Taipei County participated in this study. Their mean age,height,and weight were 6-8yrs,118.94cm,and 23.19kg respectively. This research grouped effective samples into the experimental group（20 boys and 14 girls to the improvement of Table ）and the control group（19 boys and 19 girls to the Table）. Atter 8 weeks （14 classes）of learning , they were evaluated on their abilities of forehand serve and the score of serve. The SPSS for Windows 10，Paired-Samples t test，and the video recording were applied for the analysis of quantification and homogenisation among collected deta. Significant level was set at α＝.05 The findings of this study were as follows： 1.The beginners made significant progress on serve skills when practicing on the improvement of Table,but not on the Table. 2.Taller beginners（above average height）made steady improvement on both tables , shorter beginners（below average height）learns better on the improvement of Table. 3.Motions practiced on the improvement of Table were more accurate than those on the Table. 4.Most beginners′feel that it is much more easier to practice on the improvement of Table . 5.From the aspects of height,motion development and psychdogical effect, table tennis beginners should practice on the improvement of Table. Key Words：the sport of table tennis，the improvement of Table，the Table， table tennis beginners，forehand serve.
33
Wun, Yu-You, and 温予佑. "Table Tennis Skill Recognition Based on Coupled-HMMs." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/thtan9.
Повний текст джерелаАнотація:
碩士國立東華大學
資訊工程學系
100
Table tennis is a highly skilled sport, and recognizing the players’ skill through human eyes needs sufficient background knowledge and experience. This makes the table tennis intelligence gathering process difficult. Furthermore, the audiences who are unfamiliar with table tennis are hard to distinguish the skills and hard to realize how wonderful the play is. Therefore, how to recognize the table tennis skills is a very important issue. Most of the previous posture recognition approaches were focusing on detecting and analyzing the human features. In the experimental examples of such approaches, the differences among human postures are large. In contrast to the traditional posture recognition, the recognition of table tennis skills is a far more complex task in which some skills have similar body motions with different ball characteristics, but some skills have similar ball characteristics with different body motion. Using only one of the body motion information and ball motion information is hard to distinguish the table tennis skills. In order to recognize the skills accurately, we consider both the ball motion information and body motion information. This paper proposes a table tennis skill recognition system based on coupled Hidden Markov Models (coupled HMMs) combining body motion information and ball motion information. The system consists of three parts: ball motion feature extraction, skeleton motion feature extraction and table tennis skill recognition. In the ball motion feature extraction, we calibrate the two-camera system and the 3D ball trajectory is reconstructed from 2D ball positions in sequential frames through triangulation. The ball motion features are extracted from the 3D trajectory. In the skeleton motion extraction, we track the skeletons of the player by using Kinect. The skeleton motion features of four joints of the arm holding the racket are extracted. In the table tennis skill recognition, we use the coupled HMMs to recognize ten table tennis skills. The experimental results show that the coupled HMMs, which combine the body motion features and ball motion features, have the better average recognition rate than conventional single feature HMMs in table tennis skill recognition.
34
CHIANG, YU-CHIN, and 姜昱志. "Research on The Competency of Table Tennis Coaches." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/28842406377377149986.
Повний текст джерелаАнотація:
碩士聖約翰科技大學
自動化及機電整合研究所
96
Table tennis is one of the most popular sports in Taiwan, enjoyed by people of various ranks, ranging from students in gym classes to professional team members to laymen. However, being able to play the sport does not make one a coach of the sport. It is therefore of vital importance to have an effective measure of the level of expertise possessed by coaches in order to raise the standard of the sport. This study partitions coaches into different groups on the basis of such demographic variables as sex, age, level of education, and years of work, and each group is further investigated on the level of expertise by means of questionnaires. The results are analyzed by statistics software SPSS 12.0 and categorized. It is found that different values of the demographic variables are correlated to different levels of expertise in a significant way. Based on our findings, suggestions for improvements are made, and it is hoped that this study on the coach’s levels of expertise will help advance the sport.
35
Chou, Bing-Xu, and 周炳旭. "Effect of Adhesives on the Table Tennis Performance." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98655718158507796549.
Повний текст джерелаАнотація:
碩士中國文化大學
體育學系運動教練碩士班
98
The effect of two different adhesives used on table tennis pedals war studied based on the responses of the ball rebounding speed. An experiment war conducted to investigate the effect by pasting the organic and inorganic adhesives on four specific areas of the pedal with balls strucked on those areas at two ball speeds. In addition, the pedal war positioned at two different setup angles to receive the incoming balls. The motion of the ball striking war recorded by a high speed camera and subsequently the ball speeds are calculated by using Kwon 3D motion analysis software. The data of the experiment war further analyzed by using Minitab software. The result indicates that adhesives have shown insignificant effects on the ball rebounding responses at two different ball speed and/or pedal setup angles.
36
Sung, Wel-Lun, and 宋緯倫. "The Development of a Robotic Table Tennis System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/18077633936137331265.
Повний текст джерелаАнотація:
碩士國立臺灣海洋大學
機械與機電工程學系
97
The objective of the thesis is to construct a table tennis robot system that can be controlled under real time by using the back-propagation neural network architecture. In the experiment, a four-axis table tennis robot was designed and fabricated in house. The techniques of image processing, stereo vision, neural network, and motor motion control were integrated to achieve the hitting-back task by the table tennis robot. The three-dimensional coordinates of the ball were first measured by using the stereo vision technique. Then, instead of using motion model, we employed the neural network to predict the hitting position of the racket. The thesis adopted the PC-based architecture together with video capture card and CCD cameras to lower the cost and avoid the expensive three-dimensional image acquisition platform. Due to the three-dimensional nature of the motion, a space coordinates measuring system must be established. Here we used two cameras to perform stereo vision and undertake the real-time image processing. In the experiment, the image processing and three-dimensional coordinates computation scheme were first performed to derive the target information, thereby the hitting position was estimated by the back-propagation neural network, and finally the racket was driven to the hitting position by commanding the motors. The feasibility of the above procedures was confirmed by experiments, that is, the system could achieve the hitting-back task under some restricted conditions.
37
Kuo, Yueh-Tung, and 郭岳東. "A hearing-impaired boy's life with table tennis." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/k322gc.
Повний текст джерелаАнотація:
碩士臺北市立大學
競技運動訓練研究所
105
This research presents a hearing loss student without the background of athletics, but he finally became a national table tennis team member through a period of hard time in self-training. I described the process of being recruited into the national team after numerous failures, however I never gave up. The process was full of pain and frustration. Through self-narration, I gained a deeper understanding about my life and was inspired by the reconstruction of the athletic experience, a path that every athlete all had to walk on. Via retelling the story, my life turned to be meaningful. During the writing process, I kept wakeful to enhance trustworthiness of the researching. Although I was not a top athlete in Taiwan, the writing action still could make me introspect the way how I grew up in the table tennis world in which the various events and significant others were valuable because they belonged to "Me.”
38
Chia-yi, Chou, and 周佳怡. "A Study of Brand Image and Brand Identity of Corporate Sponsorship on Table Tennis for the Table Tennis Club Participants in Kaohsiung." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/28267338113832280469.
Повний текст джерелаАнотація:
碩士國立高雄師範大學
體育學系
101
First, the purpose of this study was to understand the current situation of brand image and brand identity of corporate sponsorship on table tennis for the table tennis club participants in Kaohsiung. Secondly, in order to discuss the different background participants of the discrepancies between brand image and brand identity, and analyze the related issues about brand image and brand identity. The questionnaire was used as a tool, 423 valid questionnaires were retrieved. This study applied descriptive statistics, Hotelling Trace, one-way MANOVA and canonical correlation. The conclusions of the study are as follows: (1) Most of the participants in Kaohsiung were male, married, aged 41-50, educational of college, public or military officers, high income, high involvement with exercise. The highest in identify was The Cooperative Bank. (2) The evaluation of brand image and brand identity among table tennis club participants in Kaohsiung was normal. (3) There were significant discrepancies on brand image among the participants which were such as gender, age, educated. (4) There were significant differences on brand identity between the participants of education degree and enterprises identify. (5) According to the canonical correlation analysis, it found a significant correlation between brand image and brand identity. Therefore, the enterprises should adopt a common strategy to consolidate different groups, extend the sponsored. Table Tennis Association should help to balance north-south distribution of resources and actively to seek business cooperation. Finally, further studies were recommended that the research needs to consider different activities and group through interviewing.
39
Chang, Yu-Wen, and 張昱文. "An Analysis of Inertial Technology of Table Tennis Outstanding Male Athlete Ma Long－The Case Study of 2017 Word Table Tennis Championships." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7d52ua.
Повний текст джерелаАнотація:
碩士臺北市立大學
競技運動訓練研究所碩士在職專班
107
Purpose: The study discussed the serve and receive techniques of Ma Long in his five matches at 2017 World Table Tennis Championship. The relationships between his frequently used techniques and point-gaining and losing were analyzed. Methods: MA Long had five matches with Anton Kallberg (Sweden), Chuang Chih-Yuan (Chinese Taipei), Timo Boll (Germany), XU Xin (China), and FAN Zhendong (China) respectively. The data were collected from https://www.youtube.com/ and analyzed with percentage counts statistics. Results: Ma Long tended to serve left side-backspin to spot 2 and 5 which accounted for 48.6% of his serves. He mostly received with forehand short which accounted for 35.9% of his total receives and the placements were at spot 1, 2, 4, and 5. His winning strategies is mainly forehand or backhand topspin loop to spot 7, 8, and 9 after serving or receiving. He tended to lose point when he served left side- backspin and received with forehand short. Conclusions: Ma Long’s serve focused on left-side topspin and left-side backspin and receive with mostly forehand and backhand drop shot. His mastery on serving and receiving allowed him to proceed with following smash. His balanced forehand and backhand spins were his main scoring skills. However, the point-gaining techniques he used were high risks. If the success rate of his tactics increases, he would be unparalleled in the world of Table Tennis.
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LI, TSUI HSIU, and 崔秀里. "dIfferent diameter table tennis influence on athlete''s skills." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/17058813247278921511.
Повний текст джерелаАнотація:
碩士中國文化大學
運動教練研究所
89
The purpose of this study was to analyze the different diameter table tennis influence on athlete’s skills. The subjects of this study included 12 Chinese culture University table tennis athletes . Each subject participated in circled games with 38mm and 40mm table tennis respectively , and the total number of the games was 264. The skills applied in games were divided in to Serving Attack Phas，Receiving AttacK Phase，Double Cutting Phase，Pushind Phase，mutal attack Phase . Using T test to investigate the difference of the five skills of the 38mm and 40mm table tennis . The playing techniques of Serving Attack Phas，Receiving AttacK Phase，Double Pushind Phase，mutal attack Phase reached the high level of (P＜.01)，We could find out that made Double Cutting Phase a great proress.But still didn’t achieve a remarkable standard.
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Liang, Hsi-Chien, and 梁世建. "Table Tennis Forehand Drive Movement Three-Dimensional Kinamatics Analysis." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/25051005181668015853.
Повний текст джерелаАнотація:
碩士國立臺北教育大學
體育學系碩士班
95
Table Tennis Forehand Drive Movement Three-Dimensional Kinamatics Analysis Advisor: Tsu-Lin Wong, Ph.D. Graduat Student: Hsi-Chien Liang Abstract This research aims to examine table tennis (ping pong) forehand drive movements during paddle raising (preparation) period, swing to hit (strike) period, continued swing period, and return to original posture period. Specifically this research examines the kinematics parameters related to: time, distance, displacement, and speed of paddle swing, as well as player joint angle changes and speeds of joint changes, and speed and displacement of player center of gravity changes. The test subjects include two female adult team members of the Guo Tai Table Tennis team, who are also Taiwan National Team members, and two junior male members of Taiwan National Team. All four players are right-handed and hold their paddles in the “handshake” style with the reversed rubber face of the paddle used in forehand drive. The average age, height, and weight of the players are 15.53 ± 1.01 years old, 160.25 ± 4.79 cm, and 58.75 ± 11.64 Kg, respectively. The equipment includes two Mega Speed (120 Hz) video cameras for synchronized taping. Before the experiments, the equipment recorded the 3D reference frame for 5 seconds, and 21 reflectors were placed on each player at important joint locations. A Smart-Pong szs-3000 robot was used to produce long, topspin serves, and forehand drives from the players were video taped. The images were processed with Kwon motion analysis system model trimmer, Direct Linear Transformation, and Wave Filter. Then, the data were processed with Excel and Origin statistic and graphing software to obtain kinematics parameters of human body in the 3D movements. These experiments produced the following results: (1) Forehand drive movement duration ratios: paddle raising period accounts for about 20% of the whole movement duration, swing to hit period accounts for about 10%, continued swing after the hit accounts for about 17%, and return to the original posture accounts for about 39%. The entire durations in the current studies are similar to those previously reported. However, the present studies show relatively shorter duration for paddle raising and longer duration for return to the original posture; these are different from the previously reported findings. (2) Forehand drive displacement ratios: paddle raising accounts for about 24% of the entire displacement (distance), swinging the paddle to hit the ball accounts for about 23%, continued swing after the hit accounts for about 28%. The entire distances are similar to previously reported results. However, current studies revealed shorter distances for the paddle raising and longer distance for the return to the original posture. These two aspects are also different from the previous studies. (3) Results from the current studies revealed that the average paddle swing speed is 11.00 ± 1.30 meter/second, and the maximum speed average is 15.71 ± 0.01 meter/second. These results are very similar to previous results. (4) Changes in the angles of the shoulder joints and the elbow joints during a forehand drive: paddle raising period: 3.06 ± 8.60 degrees for the shoulder joint, and 37.44 ± 12.47 degrees for the elbow joint; swing to hit the ball: 21.55 ± 7.47 degrees for the shoulder joint, and -18.68 ± 8.34 degrees for the elbow joint; continued swing after the hit: 37.87 ± 9.81 degrees for the shoulder joint, and -29.76 ± 12.57 degrees for the elbow joint; return to the original posture: -59.99 ± 8.79 degrees for the shoulder joint, and 2.91 ± 13.42 degrees for the elbow joint. These results, like previously reported results, show substantial variations among the players. (5) The upper limb joint movement speeds progressively increase from the proximal end to the distal end, i.e., paddle speed > wrist speed > elbow speed > shoulder speed. This observation is consistent with human body movement chain principles. Both adult National Team members have various joint movement speeds faster than those of the two junior National Team members. These results are similar to the previously reposted results. Although these results do not completely conform to whipping effects, they are generally consistent with such effects. Furthermore, one of the players (Shong Nai Yi), who has the most changes in the shoulder and elbow joints, also has the maximum swing speed. (6) Both adult National Team members have better parameters in their torso and upper and lower limb joint speeds, the average and peak speeds of the center of gravity, and the smoothness of the trace of their center of gravity. In particular, during the critical period of swinging the paddle to hit the ball, only one player (Shong Nai Yi) has consistency between her general movement direction and her center of gravity moving direction in the 3D space. This result should be worth the attention of future investigators. Results from the current studies are generally consistent with those previously reported. Table tennis is a special sport that is commonly associated with player variations due to different movement or strike styles. However, based on kinematics parameter analysis of players in action, it is hoped that one can deduce the scientific principles of this sport or find out the meaning or clue of the best movement. If future investigators can use more advanced scientific equipment, software, or combine with studies of training method, these studies will catch the interests of coaches and players and serve as references for future trainings. Keywords: table tennis, forehand drive, kinematics.
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Su, Ching-Yu, and 蘇慶育. "The Effect Of Table Tennis Expansive Solvent Toward Rubber." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/12782566915582539509.
Повний текст джерелаАнотація:
碩士國立新竹教育大學
體育學系碩士班
103
The Effect Of Table Tennis Expansive Solvent Toward Rubber Researcher: Ching-Yu Su Advisor:Wen-Shinn Chiu Abstract Purpose：The purpose of the study was to discuss the effect of table tennis racket rubber with expansive solution which can affect the ball COR. Methods： The study collected 20 balls’ COR data after hitting two different sponge rubber with expansive solution for 5 days and asked the athletes to write the feeling list after hitting . The study adapted Two-Way ANOVA to analysis the data. Results：1. The balls’ COR of the two sponge rubbers with expansive solution were higher significantly than those without expansive solution. 2. The balls’ COR of the two sponge rubbers with expansive solution didn’t change significantly for 5 days. But the athletes felt that the balls’ COR of the two sponge rubbers with expansive solution decreased. 3. The racket’s vibration of the two sponge rubbers with expansive solution were higher than those without expansive solution. Conclusion： The balls’ COR of the two sponge rubbers with expansive solution indeed increased the balls’ COR and racket’s vibration. Key words：solution, coefficient of restitution, vibration amplitude, athletes’ feeling
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hi, Liu-Jiaz, and 劉嘉智. "Research Table tennis sports development in Taipei （1967-2012）." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/62118494880934156669.
Повний текст джерелаАнотація:
碩士國立臺東大學
體育學系碩士班
103
Taipei is the capital city of the country are, abundant pool of talent and resources, the effectiveness of sports policy and mechanism for the construction of National City sports environment is concerned, they are indeed a considerable extent the role of indicators, from all national Table tennis game, whether it is or early today, can be found in Taipei team in the game very active among the best results, thanks to the efforts of all sectors, driven by the development of sports in Taiwan Table tennis place, its history make a collect and organize to improve Table tennis sports history research the quality and quantity, this is the author of the study motivation. In this study, the main method to historical research, together with interviews. Since the scope of the study from 1967 to 2012, with historical background and school-based social Table tennis sports. The resulting research findings are as follows: 1.Taipei restructuring of municipalities, an endless supply of resources. Political support, economic takeoff, the implementation of education programs, the rise sports ethos, help extended table tennis sports. 2.With the 1975 into the formal education curriculum, as well as through the promotion of community activities, Table tenniscan be implemented in the development of school sports. However, due to lack of planning, the players switched careers, good players and then lost. 3.Taipei table tennis Commission to promote the long-term corporate sponsorship under, billiard sports quite vigorous development. Although after 1984, the players training system might not be perfect, billiard sports performance after Tainan, but the overall competitive table tennis academic performance is still better than Taiwan's Taipei city and county.
44
侯淑玲. "Visual reaction and receving performance between table tennis players." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/08502907603378289398.
Повний текст джерела
45
Yang, Chung-Shi, and 楊宗時. "The Story of Three Table Tennis Youth National Players." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/51737523644089774269.
Повний текст джерелаАнотація:
碩士國立臺北教育大學
體育學系碩士班
97
Taiwan’s table tennis arena has been exuberant with vitality especially among primary school level competitors. Only with numerous victories and determination can one stand out from the crowd. Being a “national table tennis player” is not only a symbol of skill mastery and glory, but also the greatest dream that the young contesters have. The once prominent comrades in battle felt excited even as they reminisced through all the bittersweet memories of their days. As each chose and followed their own paths after graduation, how have their days been? Bitter or sweet? Gain or loss? Regrets or fortunate? Those golden days are worthy of our exploration! The narrative inquiry approach is applied to demonstrate the true life stories of these athletes, depicting them at their trainings, academics, competitions and major life decisions; detailed and delicate angles of retrospect and evaluation portray their personal experiences and inner worlds their most original forms. All these help remove emotional barriers and build communication channels between athletes and their parents, coaches and sports administrators. Our conclusion is that even though the three athletes are not famous stars, their stories reveal great insight: one needs to be brave at the cross-roads of one’s life; attitude will determine one’s height, and perseverance will open up many doors of opportunity. Participation in sports not only builds one’s physical abilities but also nurtures one’s fearless attitude, which proves to be extremely valuable to one’s later lives. In the past, the researcher was their coach and teacher; now, they are the professional trainers of the researcher’s son; in the future, stories will continually be re-written, re-told and repeated!
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Huang, Hsin-Hsueh, and 黃信學. "Biomechanical Analysis of Table Tennis Forehand and Backhand Drives." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/15199951154905119222.
Повний текст джерелаАнотація:
碩士國立臺灣師範大學
體育學系在職進修碩士班
99
The purpose of this study was to combine the kinematics, kinetics and surface EMG methods to analyze six elite collegiate table tennis players in Taiwan (age: 21 ±4.69 yr, height: 173.5 ±4.59 cm, weight: 67 ±5.80 kg, experience: 12 ±4.52 yr.) when they were performing the forehand and backhand drives techniques while receiving the top spin and the under spin services. Ten VICON MX13+ Motion Capture systems (250 Hz), two KISTLER Force Plates (1500 Hz) and Noraxon Wireless EMG system (1500 Hz) were used to collect the kinematics of the dominate upper limb muscle groups, which were the wrist flexor, wrist extensor, biceps brachii, triceps brachii, pectoralis major, anterior deltoid and posterior deltoid. The EMG data were analyzed by using the Acknowledge software (1000Hz)., kinetics data and surface EMG signal. The Vicon Nexus 1.52 was used to calculate the kinematics and the kinetics data, the Noraxon software was to analyze the EMG signal parameters. All the variables were tested by Friedman two-way analysis of variance nonparametric statistical test, and the post-hoc comparisons were calculated by the Excel software. The Wilcoxon matched-pairs signed-rank nonparametric statistical test was to test the different variables between forehand and backhand drives, the significant level was at α =.05. The results were as follows: there was a significant difference that the forehand drive was greater than backhand drive in the following variables, the return initial velocity of the ball, racket swing velocity, the velocity of center of gravity, racket upswing displacement and the height of center of gravity at the contact point. There was greater racket tilt angle and a lower center of mass when return backspin serve. In ground reaction forces, there was a significant correlation between anteroposterior impulse and horizontal racket anteroposterior velocity. In EMG, The anterior deltoid, pectoralis major, flexor carpi radialis and extensor carpi ulnaris in forehand drives, the posterior deltoid, triceps and extensor carpi ulnaris in back hand drives exerted the greater muscular amplitude during the swing forward phase. There were co-contractions between Biceps Brachii and Triceps Brachii, Flexor carpi radialis and Extensor carpi ulnaris in forehand drives during upswing phase, while a less co-contraction in backhand. The muscular strategy and the patterns of the forehand and backhand drives in elite table tennis players were not the same.
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Shang–Ju, Lee, and 李尚儒. "Table Tennis Development of Taiwan in Postwar（1945-2004）." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/3xyw7a.
Повний текст джерелаАнотація:
碩士國立臺東大學
體育教學碩士在職專班
95
Table tennis was listed as our country Olympic Games to seize the sign key project. However, few people introduced literature of our country pool development history. According to preserve the place historical data and aroused the people to value own historical. The author decides to research. The purpose of this research is to investigate the postwar Taiwan table tennis development, the methods of historical researches and analytic literature are adopted, with the scope of research ranging in organization, sports event and international exchange situation. The time is from postwar to 2004 Athens Olympic Games.The research discovers: 1.The Taiwan table tennis mainly was promoted by the local organization, but nationwide organization insisted on selfish departmentalism. However, the place independency was strong, so it was not stopped. 2. In country competition, the early time it presented the north and south mutually to contend with, at the later period the south contestants outshined others. Obviously, the south and north players were trained differently. 3. At early time the international competition grade was outstanding, but Taiwan players suffered the Chinese Communist Party to push out of international sports world since 1971, suddenly the standard dropped. After introducing the mainland female contestants, the grade became better. Due to local organization's impelling force, it makes table tennis develop vigorously, especially the south has good training, so between the north and south disparity becomes to far. Our country is low in the international sports event result, because the contestant is no opportunity to race with the world skilled person. Introducing overseas outstanding contestants, and it increases participation opportunity, can be helpful to grade.
48
Zhi-Chun, Lin, and 林姿君. "The Analysis of Table Tennis Three-Stage Skill in The Academic Year 2010-2011 National Female Table Tennis Athletes at Chinese Culture University." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/96111046156949155053.
Повний текст джерелаАнотація:
碩士中國文化大學
體育學系運動教練碩博士班
99
The purpose of the study was to investigate the analysis of table tennis three-stage skill in the academic year 2010-2011 national female table tennis players in Chinese Culture University. The subjects were three national female table tennis players (Yi-Hwa Huang, Yu-Lin Ho, and Chia-Hui Lin) in the academic year 2010-2011 collegiate team. Data were collected primarily by means of the 2010 Chinese Taipei 1st national table tennis players ranking tournament and Chinese Taipei selective trials for the 2010 World Team Table Tennis Championships. Based on women's singles, data analysis for techniques and tactics involved 20 games: Yi-Hwa Huang for 3 games, Yu-Lin Ho for 8 games, and Chia-Hui Li for 9 games. The instrument of the study was used by the table tennis three-stage skill record list. To analyze the rate of goal and the three-stage skill used, the descriptive statistics were computed. The results revealed that the rate of goal in service-attack and receive-attack for Yi-Hwa Huang were 69.62% and 60.00% individually, and the level of performance was excellent; meanwhile, the rate of goal during the phase of rally was 37.81% which was equal to level of passing. In the skill-used part, the evaluative levels of service-attack and rally phase were lower, but receive-attack was higher. For Yu-Lin Ho, the rate of goal in receive-attack is 48.47%, which meant that the performance was excellent; meanwhile, service-attack and rally phase were 59.48% and 64.90% respectively that the performance equaled to pass. In the skill-used part, the evaluative levels of receive-attack and rally phase were higher, but service-attack was lower. For Chia-Hui Lin, the rate of goal in service-attack was 68.25%, which meant that the performance was excellent; meanwhile, receive-attack and rally phase were 42.94% and 39.60% respectively that the performance equaled to pass. In the skill-used part, the evaluative levels of receive-attack and rally phase were higher, but service-attack and rally phase were lower.
49
劉, 春芳, and Chunfang LIU. "Racket Control and Spinning Ball Measurement for Table Tennis Robot." Thesis, 2013. http://hdl.handle.net/2237/18439.
Повний текст джерела
50
Hsiao, Mei-Chu, and 蕭美珠. "Dynamics Analysis of Table Tennis Serves in Terms of the." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/63004127257738647166.
Повний текст джерелаАнотація:
碩士臺北巿立體育學院
運動科學研究所
91
Dynamics Analysis of Table Tennis Serves in Terms of the Ball’s Bounce Against Different Kinds of Rubber Sheet. Hsiao, Mei-Chu Su, Chen-Kai Ph.D June，2003 Abstract This study aims to access the motion characteristics of the table tennis serves in terms of the small and large balls’ bounce against different kinds of rubber sheet and the different dropping velocity in the small and large balls. The study object contains four types of blade: the first type is the blade with the sponge rubber sheet (Butterfly Sriver); the second type is the blade covered with long pimples and the sponge rubber sheet (Ritc 837); the third type is the blade covered with long pimples but without the sponge rubber sheet (Butterfly Feint-ox); the fourth type is the blade covered with short pimples and the sponge rubber sheet (Butterfly Impartial). The diameter of the tennis ball in this study is 38mm and 40mm This study attempts to access the variation of the dropping velocity, the angle velocity and the reflection angle in terms of the large and small balls’ bounce against four types of rubber sheet. The high-speed video camera is employed to capture images which are analyzed through Silicon Coach and the result is achieved as follows: a.The dropping velocity of the small ball is faster than that of the large ball from the height of 100cm, 150cm and 200cm. b.The velocity of the large and small balls in bouncing against the first and the fourth type of rubber sheet is faster than that of the large and small balls in bouncing against the second and the third type of rubber sheet. c.The reflection angle is larger when the large and small balls bounce against the first, second and third type of rubber sheet from the height of 50 cm and 100 cm. d.The reflection angle of the large and small balls in bouncing against the first type of rubber sheet is similar to that of the large and small balls in bouncing against the fourth type of rubber sheet, while the reflection angle of the large and small balls in bouncing against the first and the fourth type of rubber sheet is larger than that of the large and small balls in bouncing against the second and the third type of rubber sheet. Keywords: table tennis, bounce, rubber sheet characteristics