• Title/Summary/Keyword: Physical shape

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Active shape exploration of an unknown object by using robot hand (로봇손을 이용한 미지 물체의 능동적 형상탐사에 관한 연구)

  • 김진호;오상록;최혁렬
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.768-771
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    • 1997
  • Geometric probing addresses the problem of determining geometric aspects of a structure from the mathematics and results of a physical measuring device such as a probe. This paper presents a new algorithm to recognize the shape of an unknown object by using a robot hand with a force and torque sensor. The new algorithm is called S.E.P.(Shape Exploration Procedure) which finds the global shape of an unknown object. The proposed method is composed of three major parts, finding contact informations such as contact point, calculation of shape information such as curvature, and expression of global shape from these informations. Comparing with the conventional approaches, the advantages of the proposed method are explained and verified by conducting experiments with a 3-dof SCARA robot.

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Analytical Study on the Determination of Shape for Connector of Seismic Reinforced Strip (내진보강재의 체결부 형상결정에 대한 해석적 연구)

  • Kim, Jin-Sup;Kwon, Min-Ho;Lim, Jeong-Hee;Seo, Hyun-Su
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.4 no.3
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    • pp.1-6
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    • 2013
  • In this study, a shape of connector on seismic reinforced strip, which did not cause any physical damage to concrete column and can repair and reinforcement was decided by using nonlinear finite element analysis. Load displacement was applied on the concrete attached by strip. Stress distribution of connector by extension of concrete were checked. Through stress distribution of this analysis results, the most favorable shape was selected as a shape of the connector.

Korean Adolescents' Clothing Behavior as Related to Self-Consciousness and Weight Control Practices (청소년기의 자의식 및 체중조절행동자 의복행동과의 관련연구)

  • 심정은;고애란
    • Journal of the Korean Society of Clothing and Textiles
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    • v.21 no.8
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    • pp.1334-1345
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    • 1997
  • The purpose of this study were 1) to identify the effects of age and sex of Korean adolescents on the psychological variables(body attitudes, public/private self-consciousness, self-esteem), weight control practices, and clothing behaviors, and 2) to identify the relation- ships between psychological variables and weight control practices, and the effects of the variables on clothing behaviors in the adolescent' groups classified by sex and age. The results of this study were as follows: 1) Two factors of body attitudes were identified: Body-shape consciousness and Physical attractiveness. Four factors of clothing attitudes were identified: Clothing interest/dressing for others, Clothing exhibition, Dressing for self, and Psychological clothing-dependerlce. 2) There were significant effects of sex on all of the research variables. Age was found to have effects on Physical attractiveness, self-esteem, public/private self-consciousness, Clothing exhibition, and Psychological clothing- dependence. 3) In the relationships between psychological variables and weight control practices, Body-shape consciousness was negatively correlated with Physical attractiveness in all groups. Also, Body-shape consciousness had effects on weight control practice in all subject groups. 4) Public self-consciousness had direct/indirect effects on the Clothing interest/dressing for others in all subject groups. Private self-consciousness had direct/ indirect effects on dressing for self in high school boys and girls. Body-shape consciousness had indirect effects on Preference for up-to date style in male college students group, whereas weight control practices had effects on the Preference for up-to date style in female college students group. Self-esteem was found to have the effects on clothing behavior in college students groups. Among clothing attitude factors, Clothing exhibition had distinct effects on the Preference for up-to date style in all subject groups, and Clothing interest/dressing for others had effects on Clothing exhibition and Psychological clothing-dependence in high school boys and girs.

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The Effect of Dual-task Training on a Serial Reaction Time Task for Motor Learning

  • Choi, Jin-Ho;Park, So Hyun
    • The Journal of Korean Physical Therapy
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    • v.24 no.6
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    • pp.405-408
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    • 2012
  • Purpose: We examined the effect of dual-task and single-task training on serial reaction time (SRT) task performance to determine whether SRT is based more on motor or perception in a dual-task. Methods: Forty healthy adults were divided into two groups: the dual-task group (mean age, $21.8{\pm}1.6$ years) and the single-task group (mean age, $21.7{\pm}1.6$ years). SRT task was conducted total 480 trial. The four figures were presented randomly 16 times. A unit was set as 1 block that would repeat 10 times. Thus, there were a total of 160 trials for each of the three color conditions. The dual-task group performed an SRT task while detecting the color of a specific shape. The end of the task, subjects answered the specific shape number; the single-task group only performed the SRT task. The study consisted of three parts: pre-measurement, task performance, and post-measurement. Results: Differences of pre and post reaction time between two group was higher for the dual-task group as compared to the single task group and there was a significant interaction between time and group (p<0.05). Conclusion: Our results indicate that. short term period SRT is not quiet effective under dual-task conditions, individuals need additional cognitive processes to successfully navigate a task This suggests that dual-task training might not be appropriate for motor learning enhancement, at least when the training is over a short period.

Physical Properties Analysis of Mango using Computer Vision

  • Yimyam, Panitnat;Chalidabhongse, Thanarat;Sirisomboon, Panmanas;Boonmung, Suwanee
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.746-750
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    • 2005
  • This paper describes image processing techniques that can detect, segment, and analyze the mango's physical properties such as size, shape, surface area, and color from images. First, images of mangoes taken by a digital camera are analyzed and segmented. The segmentation is done based on constructed hue model of the sample mangoes. Some morphological and filtering techniques are then applied to clean noises before fitting spline curve on the mango boundary. From the clean segmented image, the mango projected area can be computed. The shape of the mango is then analyzed using some structuring models. Color is also spatially analyzed and indexed in the database for future classification. To obtain the surface area, the mango is peeled. The scanned image of its peels is then segmented and filtered using similar approach. With calibration parameters, the surface area could then be computed. We employed the system to evaluate physical properties of a mango cultivar called "Nam Dokmai". There were sixty mango samples in three various sizes graded by an experienced farmer's eyes and hands. The results show the techniques could be a good alternative and more feasible method for grading mango comparing to human's manual grading.

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Types of perception on the body shape of the elderly men

  • Cha, Su-Joung
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.4
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    • pp.129-136
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    • 2019
  • The purpose of this study was to provide basic data necessary for the development of clothing that can improve the satisfaction of body shape of elderly men by examining subjective characteristics and characteristics of perception type of older men's body shape. Using the Q methodology, I investigated and analyzed the process of formation and main characteristics of subjectivity of various types of recognition that elderly men express about their body shape. There were four types of perception of body shape in elderly men: flat hip and bird legs skinny body, back bent and abdominal obese body, thick neck and upper body development body, forward cervical neck and protruding abdomen obese body. The actual body shape of elderly men was classified according to the bust, waist circumference, hip circumference, and body part angle. But recognition body shape of elderly men was classified by visual factors like the abdomen, the angle of the neck, the inclination of the back, the slope of the waist, and the degree of obesity. It is necessary to consider the trend of silver fashion which is increasing in demand. In addition, it is necessary to develop clothing patterns of comfortable fit through ergonomic study on the physical characteristics of older men. Consideration should be given to the design and pattern that can reduce the difference between the ideal body shape and the body shape recognized by older men.

Research on Physical Characteristics of Chinese College Students of Different Physical Activity Levels

  • Li, Chuang;Long, Qianwen;Song, Jeho
    • International Journal of Advanced Culture Technology
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    • v.8 no.3
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    • pp.334-341
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    • 2020
  • Through a investigation of the physical activity status of 1794 undergraduates who were non-sports majors from freshman to senior in Jiangxi Normal University, to analyze physical fitness status of college students with different physical activity levels. The results showed that in physical activity, high-intensity physical activity of male was higher than female, while medium-intensity and low-intensity (insufficient) physical activity of female was higher than male. College students' high-intensity physical activity group's physical test scores were better than the medium-intensity physical activity group, and the medium-intensity physical activity group was superior to the low physical activity group. In terms of physical fitness, among the test indicators of body shape and physiological function, the vital capacity and body mass index of male and female were ranked at a pass level. In the physical fitness test indicators, the performance of college students' endurance qualities was better while the overall performance of strength qualities was lower. The overall fitness of college students was ranked at a pass level, and the physical test scores of female were better than male.

Landscape Structure Influencing Physical Activity and Health (녹지경관구조가 신체활동 및 건강에 미치는 영향)

  • Jin-Ki Kim
    • Journal of Agricultural Extension & Community Development
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    • v.30 no.4
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    • pp.187-197
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    • 2023
  • The study aims to identify factors related to landscape structure and socioeconomic characteristics that influence adults' physical activity and health. The study analyzes data from 148,643 respondents from the Korea Community Health Survey conducted in 2021. The study measures various factors, including the frequency of physical activity, stress, depression, and landscape metrics of forest patches. Hierarchical multiple regression analysis was used, controlling for socio-demographic characteristics. Larger forest patches and more irregular shapes are associated with higher levels of physical activity among adults. The percentage and area of the forest patch are associated with fewer mental health complaints. Configuration-related landscape metrics such as shape or arrangement of the forest patch did not show a significant association with physical activity. Overall, the study provides insights into how specific characteristics of forest patches in urban areas may influence physical activity and mental health among adults. It emphasizes the importance of green spaces and their potential positive effects on both physical and mental well-being.

Study on the individual characteristic factor by the body shape (신체(身體) 형태(形態)에서의 개체성(個體性) 관찰(觀察)에 대한 문헌(文獻) 연구(硏究))

  • Kim, Gyeong Cheol;Kim, Jae Phil;Lee, Jeong Won
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.18 no.2
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    • pp.121-136
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    • 2014
  • Objectives For the excellent differentiation of syndromes, we study on the individual characteristic factor by the inspection of body shape. Methods To the subject of diagnosis special books and diagnostics textbook of korean medicine, we arrange the individual characteristic factor by the four methods of diagnosis. Results The individual characteristic factor analyzed by the inspection of the body shape in the "Huangdineijing 黃帝內經" and "Donguisusebowon 東醫壽世保元" was observed stereotyped. The inspection of the body shape means to diagnose the patient by examining the individual physical conditions of the patient. The body depends on visceral essence to nourish, while the functions of the viscera and the conditions of visceral essence may be reflected by the body. The inspection of individual physical strength and weakness may enable one to know the functions of the viscera and the conditions of ki(氣) and blood. And also the inspection of local regions is used to closely examine some regional areas to obtain necessary clinical data on the individual characteristic factor. Conclusion As the results, the individual characteristic factor by the inspection of body shape is very important item of the four methods of diagnosis(四診) and the differentiation of syndromes(辨證). And therefore the process on four methods of diagnosis and differentiation of syndromesis is necessary to divide the signs of individual characteristic factor and the signs of disease.

Solution-Phase Synthesis of Shape-Controlled Metal Nanocrystals

  • Im, Byeong-Gwon
    • Proceedings of the Materials Research Society of Korea Conference
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    • 2011.05a
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    • pp.21.1-21.1
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    • 2011
  • Controlling the morphology of a metal nanocrystal is critical to modern materials chemistry because its physical and chemical properties can be easily and widely tuned by tailoring the size and shape. Combined with ease of synthesis and processing, metal nanocrystals with desired morphologies and thus properties are promising candidates for a wide variety of applications in catalysis, sensing, imaging, electronics, and photonics, and medicine. In this talk, I would like to introduce my recent research results on the shape-controlled synthesis of metal nanocrystals using a simple aqueous method. This water-based system provides a number of merits such as simplicity, convenience, and the potential for large-scale production and enables us to synthesize metal nanocrystals with a rich variety of shapes such as truncated octahedron, cubes, bars, octahedrons, and thin plates. The ability to control the shape of metal nanocrystals provides a great opportunity to systematically investigate their catalytic and optical properties.

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