• Title/Summary/Keyword: movements

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A Systematic Review on the Relationship of Saccadic Eye Movements and Cognition (안구운동과 인간의 인지기능의 관련성에 대한 체계적 고찰)

  • Jung, Hae-In;Kim, Jong-Bae
    • Therapeutic Science for Rehabilitation
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    • v.5 no.2
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    • pp.49-55
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    • 2016
  • Objective: The purpose of this study was to look at a systematic review on the relationships of saccadic eye movements and cognition. Through this comprehensive study, we have to compare the studies. Methods: We systematically examined papers published in journal from 1995 to 2015, using KERIS. Main words to examine are saccadic eye movements, cognitive function, cognition, relationship, saccade program, etc. Results: 6 studies were selected, All of them were saccadic eye movements. Eye movements and cognitive function have correlation. Age from 5 to 65 years from the studies, they found the relationships between cognition and saccade(p<.05). However, the results demonstrated some limitations. First, there were variation in large of age spectrum. Second, the populations were small. Therefore, in the future study, saccadic eye movements study apply to variety of interventions to separate experimental group and control group as cohort study, and majority of patients is needed on occupational therapy. Conclusions: In the future study, the use of eye movements apply to a variety of interventions and majority of patients is needed for the effect of cognitive function improvements. If occupational therapists can obtain knowledge and make a protocol for cognitive program.

The Objective Measurement of the Lung Parenchyma Motion for Planning Target Volume Delineation (폐 부위 Planning Target Volume(PTV)설정시 폐 움직임의 객관적 측정)

  • Chung, Weon-Kyu;Cho, Jeong-Gill
    • Radiation Oncology Journal
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    • v.15 no.4
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    • pp.387-392
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    • 1997
  • Purpose : To quantify the movement of lung Parenchyma for ICRU 50 Planning Target Volume (PTV) delineation of the lung region. Materials and Method : Fluoroscopic observations and measurements are Performed on 10 patients with chest region cancer who have normal putmonary functions We have divided the lung region into 12 parts for the right lung, 10 parts for the left lung and four to five Points of lung parenchyma were selected for anatomical analysis Points, Fluoroscopic images are sent to a computer and then movements are measured. Results : Both lowe lobes showed the longest longitudinal movements because of breathing (average 14.1mm, maximum 22.1mm), while anteroposterior displacement showed the smallest value. Lateral movements of the lung parenchyma averaged 6.6mm, and the maximum value was 9.1mm, (both hilar regions showed maximum values because of cardiac motion) Conclusion : We could quantify the lung movements by measuring parenchyma displacements. The movements of both upper lobes were less than those of the middle and upper lobes in longitudinal and transverse movements. Optimal margins can be selected for PTV delineation using these results.

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Comparative Study of Biomechanical Left and Right Elbow Joint Extension Movements After Wheel Axle Application (윤축을 적용한 좌·우 주관절 신전 동작의 운동역학적 비교 연구)

  • Kim, Sung-Joo
    • Korean Journal of Applied Biomechanics
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    • v.21 no.4
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    • pp.429-436
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    • 2011
  • In this study, we have experimented with 9 players at the national delegate level. Although there were some differences in the average effects of 3 types of one-two straight movements after the application of wheel axle, there were no statistical differences in the case of surface reacting forces, electromyograms, and impact forces. When the right fist was impacted using the one-two straight movements and the wheel axle was applied with 3 segmentations, high impact forces were obtained for the pronation in the following order-72.01 $m/s^2$ (type 2), 70.93 $m/s^2$ (type 3), and 58.19 $m/s^2$ (type 1). Higher values of the surface reacting force were found for type 1 that did not exhibit pronation in the left foot, whereas in the case of the vertical direction of the right foot, type 2 with pronation exhibited higher values and impact forces. In the right electromyogram, high impact forces due to the activation of the muscular electric potential were obtained for lumbar erector (LE) spinae and triceps brachii (TB) with type 1; LE spina, latissimus dosi (LD), and upper trapezius (UT) with type 2; and brachioradialis (BR), UT, and rectus abdominal (RA) with type 3. Due to pronation and complex motions of the 3 pronation segmentations, the efficiency was higher for impacts due to one-two straight movements.

An Analysis of the Archetypical Symbols of Children's Performance with Water During Sandplay Therapy (아동의 모래놀이치료에서 물(水)을 통한 연행의 상징 분석)

  • Goh, Eun-Kyoung;Chung, Kai-Sook
    • Korean Journal of Child Studies
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    • v.32 no.3
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    • pp.185-202
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    • 2011
  • The purpose of this study was to understand the archetypical symbols present when conducting sandplay therapy with water from a hermeneutic point of view. The research participants were 6 children aged 8~9 who experienced problems in parent-children relationships. The result were as follows : The nature of archetypical symbols of present when working with water can be structured along two themes, vertical movements and horizontal movements. In vertical movements with three sub-themes, the meaning of 'to put in and boil out' is interpreted as 'mother's feeding baby', the meaning of 'to sink and bring out of water' is interpreted as 'resource acquisition', 'to swamp and float on the water' represents 'death and rebirth'. In horizontal movements consisted of two sub- themes, the meaning of 'to be swept away' is interpreted as 'initiation and conversion', the meaning of 'to wave and fix' is interpreted as 'to overcome the difficulties and create stability'.

A Change of the Gap in Dressed Blouses with Above-elbow Sleeves and Sleeveless According to Arm Movements (팔 동작에 따른 소매유무별 블라우스의 착의 공극량 변화)

  • Lee, Myung-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.34 no.11
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    • pp.1779-1785
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    • 2010
  • The experiment is designed to create some useful data on the dressed shapes that contribute to simulating the adaptability of clothes. We studied the dressed shapes of blouse with above-elbow sleeves and sleeveless according to five types of arm movement (basic posture, reach forward 45, 90, and reach lateral 45, 90) in the stand-posture. Experiments were conducted to understand the dressed shape through 3-D measurement Vivid 910 and to investigate the width, depth, area distribution and gap of the shape of blouses on the section map with a software program for 3-D shape analysis, Rapid Form 2004. The Data were analyzed by factor analysis. The results of this study are as follows: The ratio of depth per width in the stand-posture was lower than other arm movements and the reach lateral was higher than the reach forward. The gap of the upper body was a briefed 4 factor; front, front-side, back, and back-side. It was higher than the sleeveless with a change of the gap in the dressed blouse with above-elbow sleeves by arm movements per stand-posture. The divisional gap shows the adaptability of clothes according to the types of blouse and arm movements in the change of the ratio.

The Analysis on the Changes in Beginners Batting Movements through Undergraduate Baseball Lectures (대학 야구 강의를 통한 초보자의 타격 동작 변화 분석)

  • Chun, Young-Jin
    • Korean Journal of Applied Biomechanics
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    • v.22 no.3
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    • pp.277-284
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    • 2012
  • The purpose of this study was to find out the changes in beginners' batting movements after taking undergraduate baseball lectures, by comparing and analyzing the speed of bat, the angle of body and its segments, the angular velocity and so on. For this purpose, the author picked up five undergraduates who had not taken baseball lectures, and conducted three-dimension computerized tomography twice on them, that is, before and after taking baseball classes, with eight infrared cameras and two force platforms. The conclusions are, first, the time required for swing was shortened after taking the classes. Second, the maximum velocity of the bat-end was increased. Third, at the time of impact, while the rotation angles of the pelvis and the tip of left foot were increased, the left elbow had more flexion after the classes. Fourth, the size of ground reaction force was increased at the point of swing where the ground reaction force of left foot became maximized. As we can infer from these conclusions, beginners' hitting movements before taking baseball classes tended to swing only with the arms, without waist rotation and weight shift of the lower body, but after the classes, their movements were proved to be corrected into the swing using the lower body. For the future studies, the author expects a research in a close to real environment by using pitching machine.

Gesture Recognition based on Motion Inertial Sensors for Interactive Game Contents (체험형 게임콘텐츠를 위한 움직임 관성센서 기반의 제스처 인식)

  • Jung, Young-Kee;Cha, Byung-Rae
    • Journal of Advanced Navigation Technology
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    • v.13 no.2
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    • pp.262-271
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    • 2009
  • The purpose of this study was to propose the method to recognize gestures based on inertia sensor which recognizes the movements of the user using inertia sensor and lets the user enjoy the game by comparing the recognized movements with the pre-defined movements for the game contents production. Additionally, it was tried to provide users with various data entry methods by letting them wear small controllers using three-axis accelerator sensor. Users can proceed the game by moving according to the action list printed on the screen. They can proceed the experiential games according to the accuracy and timing of their movements. If they use multiple small wireless controllers together wearing them on the major parts of hands and feet and utilize the proposed methods, they will be more interested in the game and be absorbed in it.

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Oil Price Fluctuations and Stock Market Movements: An Application in Oman

  • Echchabi, Abdelghani;Azouzi, Dhekra
    • The Journal of Asian Finance, Economics and Business
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    • v.4 no.2
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    • pp.19-23
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    • 2017
  • It is undisputable that crude oil and its price fluctuations are major components that affect most of the countries' economies. Recent studies have demonstrated that beside the impact that crude oil price fluctuations have on common macroeconomic indicators like gross domestic product (GDP), inflation rates, exchange rates, unemployment rate, etc., it also has a strong influence on stock markets and their performance. This relationship has been examined in a number of settings, but it is yet to be unraveled in the Omani context. Accordingly, the main purpose of this study is to examine the possible effect of the oil price fluctuations on stock price movements. The study applies Toda and Yamamoto's (1995) Granger non-causality test on the daily Oman stock index (Muscat Securities Market Index) and oil prices between the period of 2 January 2003 and 13 March 2016. The results indicated that the oil price fluctuations have a significant impact on stock index movements. However, the stock price movements do not have a significant impact on oil prices. These findings have significant implications not only for the Omani economy but also for the economy of similar countries, particularly in the Gulf Cooperation Council (GCC) countries. The latter should carefully consider their policies and strategies regarding crude oil production and the generated income allocation as it might potentially affect the financial markets performance in these countries.

Differences in opening and protrusive mandibular movements between Class I and II malocclusions in healthy adolescents

  • Tuncer, Bureu Balos;Ozogul, Berk;Akkaya, Sevil
    • The korean journal of orthodontics
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    • v.41 no.2
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    • pp.127-137
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    • 2011
  • Objective: The aim of the study was to compare the opening and protrusive mandibular movements between Class I and Class II malocclusions in healthy adolescents by clinical and axiographic evaluations. Methods: Mechanical axiography was performed on non-orthodontically treated, temporomandibular disorder (TMD)-free adolescents (12 - 16 years) with Class I (n = 38, 16 boys, 22 girls) or Class II (n = 40, 19 boys, 21 girls) malocclusion. Opening and protrusive movements were measured clinically and axiographically. Intergroup comparisons were evaluated by t-tests. Results: In opening movement, the maximum clinical opening capacity was significantly different (p ${\leq}$ 0.05) between the groups. In protrusive movement, the Class II group had significantly greater maximum clinical protrusion (p < 0.001) and maximum axiographic protrusive length (p < 0.01) than the Class I group. No significant difference in the other opening and protrusive axiographic measurements was observed. Conclusions: TMD-free adolescents with Class II malocclusion have increased protrusive capacity compared with TMD-free adolescents with Class I malocclusion; however, the detected differences could be normal variations during adolescence.

Ultrasonic Tracking of Movements of Striped Jack ( Caranx Delicatissimus ) in the Nunoura Bay , Japan (초음파 표지를 이용한 양식어의 유영행동 추적)

  • 신현옥
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.28 no.4
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    • pp.347-359
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    • 1992
  • The movements of three striped jack (Caranx delicatissimus, 24cm of body length) were tracked by ultrasonic telemetry in the Nunoura Bay in August 1990. A school of the striped jack has been released near by the fish farming rafts by Goto branch of the Fisheries Agency and Japan Sea-Farming Association. To investigate the staying area and the swimming pattern of the fish, small size pinger($\Phi$8.5$\times$L35mm, 140dB re 1$\mu$Pa at 1m, 69kHz) was tagged on the dorsal fin without any anesthesia. The movements of three tagged fish are monitored at the same time with four omni-directional hydrophones. The locations of the fish are calculated by the hyperbolic method and tracked by a technique so called time division scheme which uses both the pulse interval and the phase. Three pingers used have the pulse interval of 1.7, 1.8 and 1.9sec, respectively, and the common pulse duration of 15ms. In results it was capable to estimate behavior right after the release, swimming speeds and approximate moving area of the fish. The movements were tracked for a week continuously, and it was found out that the staying area of the fish was around or under the farming rafts. Sometimes they swam together but most of the time they move separately. The average swimming speed of those fish was about two times of the body length.

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