• Title/Summary/Keyword: Body performance

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A Study on the Development of High Stiffness Body for Suspension Performance (서스펜션 성능 확보를 위한 고강성 차페 개발 프로세스 연구)

  • Kim, Ki-Chang;Kim, Chan-Mook
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.15 no.7 s.100
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    • pp.799-805
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    • 2005
  • This paper describes the development process of high stiffness body for ride and handling performance. High stiffness and light weight vehicle is a major target in the refinement of Passenger cars to meet customers' contradictable requirements between ride and handling performance and fuel economy This paper describes the analysis approach process for high stiffness body through the data level of body stiffness. According to the frequency band. we can suggest the design guideline about lg cornering static stiffness, torsional and lateral stiffness, body attachment stiffness. The ride and handling characteristic of a vehicle Is significantly affected by vibration transferred to the body through the chassis mounting points from front and rear suspension. It is known that body attachment stiffness is an important factor of ride and handling performance improvement. And high stiffness helps to improve the flexibility of bushing rate tuning between handling and road noise. It makes possible to design the good handling performance vehicle and save vehicles to be used in tests by using mother car at initial design stage. These improvements can lead to shortening the time needed to develop better vehicles.

A Study on the Development of High Stiffness Body for Suspension Performance (서스펜션 성능 확보를 위한 고강성 차체 개발 프로세스 연구)

  • Kim, Ki-Chang;Kim, Chan-Mook
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2004.11a
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    • pp.358-361
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    • 2004
  • This paper describes the development process of high stiffness body for ride and handling performance. High stiffness and light weight vehicle is a major target in the refinement of passenger cars to meet customers' contradictable requirements between ride and handling performance and fuel economy. This paper describes the analysis approach process for high stiffness body through the data level of body stiffness. According to the frequency band, we can suggest the design guideline about Is cornering static stiffness, torsional and lateral stiffness, body attachment stiffness. The ride and handling characteristic of a vehicle is significantly affected by vibration transferred to the body through the chassis mounting points from front and rear suspension. It is known that body attachment stiffness is an important factor of ride and handling performance improvement. And high stiffness helps to improve the flexibility of bushing rate tuning between Handling and road noise. It makes it possible to design the good handling performance vehicle at initial design stage and save vehicles to be used in tests by using mother car at initial design stage. These improvements can lead to shortening the time needed to develop better vehicles.

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Saengmaeg-san as an ergogenic aid: improving exercise performance

  • Kwak, Jae-Jun;Yook, Jang Soo;Jeong, Woo-Min;Kim, Ji-Sun;Ha, Min-Seong
    • Journal of the Korean Applied Science and Technology
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    • v.37 no.5
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    • pp.1314-1322
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    • 2020
  • Sports drinks help optimize and improve performance by delaying and eliminating the buildup of fatigue-causing substances in the body during exercise. Saengmaeg-san is a nature-friendly traditional beverage that has no side effects on the human body and can quench thirst. However, studies on the relationship between exercise ability and Saengmaeg-san are insufficient. The purpose of this study was to prescribe Saengmaeg-san during the summer training period of 4 weeks and to analyze the effect on body composition and exercise performance. Seventeen male participants were divided into 3 groups (Saengmaeg-san acid intake group [n=9], placebo group [n=8]), and body composition (height, weight, muscle mass, fat mass, BMI) and conducted exercise performance (total exercise time and HRmax). In our study, Saengmaeg-san intake had a positive effect on exercise performance, such as decreased body fat percentage, increased exercise time, and decreased HRmax. Therefore, Saengmaeg-san showed the potential as a sports drink. In the future, additional studies on fatigue-related substances, immune function-markers, and blood lipids are needed in order to clearly explain the change in exercise performance due to consumption of Saengmaeg-san.

Changes in Body Composition, Exercise Performance and Problem Behavior Based on Playing Football during Childhood (아동기의 축구놀이에 따른 신체조성과 신체적능력 및 문제행동의 변화)

  • Kim, Ah-Ram
    • Journal of the Korean Society of Physical Medicine
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    • v.16 no.2
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    • pp.101-113
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    • 2021
  • PURPOSE: The purpose of this study was to investigate the differences and correlation between body composition, exercise performance, and behavior based on playing football in childhood. METHODS: 16 subjects who played football in childhood participated in the study. Body composition and exercise performance were measured, and problem behavior was assessed for each of them. All subjects were asked to play football 50 min/day, one day/week for 8-weeks. RESULTS: Muscle mass, muscular strength, balance, and cardiopulmonary endurance, anxiety depression, atrophy depression, attention problems, rule violations, DSM somatization problems, DSM rebellious behavior problems, and sociality significantly increased after 8-weeks. There was a negative (-) correlation between anxiety depression and atrophy depression, and DSM somatization problem and muscular strength, attention problem and balance, and rule violation and cardiopulmonary endurance, after playing football. CONCLUSION: These results confirmed that playing football in childhood had a positive effect on body composition, and that exercise performance and problem behavior were related.

Enhancement of body performance and growth performance of juvenile mahseer (Tor soro) using differently colored containers

  • Teuku Fadlon Haser;Eddy Supriyono;Kukuh Nirmala;Widanarni;Tri Heru Prihadi;Tatag Budiardi;Reza Syamsudin;Muh Saleh Nurdin
    • Fisheries and Aquatic Sciences
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    • v.27 no.5
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    • pp.283-293
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    • 2024
  • Mahseer (Tor soro) growth performance tends to be slow, necessitating further development and intensification of cultivation. One way to develop aquaculture intensification is to manipulate cultivation containers to create optimal environmental conditions for the mahseer to grow. This study aimed to examine the body performance and growth performance of mahseer reared in different colored containers. Experimental research with completely randomized design was employed, with four colored container treatments namely treatment A (transparent), B (green), C (blue), and D (black), with four replications in each treatment. Findings indicate that different rearing media colors had significant effect on absolute length (4.68 ± 0.24 cm), absolute weight (1.58 ± 0.35 g), specific growth rate (2.17 ± 0.38%), feed conversion ratio (2.87 ± 0.04), survival rate (100 ± 0.00%), gross energy (3,816 ± 65.05 cal/g), and body proximate. Physiologically, mahseer fish bred using blue and black containers tend to be more resistant to stress.The best body performance and growth performance were observed in the blue and black colored containers.

Effects of Dietary Energy Intake Levels on Growth Performance and Body Composition of Finishing Barrows and Gilts

  • Cho, Sung Back;Kim, Dong Woon;Baek, Kyung Hoon;Lee, Byong Seak;Chung, Il Byung;Chung, Wan Tae;Choi, Nag-Jin
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.10
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    • pp.1516-1521
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    • 2008
  • This study was conducted to investigate the effects of different energy intake on physical and chemical composition in body fractions, growth performance and meat characteristics of finishing barrows and gilts. A total of twenty six crossbred (Landrace$\times$Yorkshire) consisting of 16 barrows and 13 gilts were used in this study. The animals were allocated by sex to two treatments to form a $2\times2$ factorial arrangement. The respective factors were sex (barrow and gilt) and dietary energy intake (1.8 and 3.0 times energy for maintenance). Pigs were kept in individual pens and had ad libitum access to feed and water from the start of the experiment at $52.4{\pm}1.9kg$ until they reached $109.9{\pm}4.4kg$ live weight. The growth performance, physical composition and meat characteristics of finishing pigs were not greatly affected by the sex. However, higher fat tissue weight in the carcass was observed in barrows compared with gilts (p<0.05). Higher proportions of water and protein (p<0.05), and lower lipid proportion (p<0.01) in the empty body and carcass were observed in gilts compared with barrows, while protein proportion in lean tissue was not affected by the sex. In fat tissue, only protein proportion was higher in gilts compared with barrows (p<0.05). Although, growth performance, physical and chemical compositions in body fractions were greatly affected, final body or carcass weight was partly affected by the energy intake In addition, loin characteristics such as shear force and loin eye area were partly influenced by energy intake levels. Therefore, the present results showed that growth performance and meat characteristics were not influenced but chemical body composition was greatly influenced by the sex. Growth performance, physical and chemical compositions in body fractions were greatly affected, whereas meat characteristics were partly affected by the energy intake levels.

The Status of Blood and Body Fluid Exposure and Affecting Factors among Nursing Students including Knowledge, Performance regarding Standard Precautions (간호대학생의 임상실습중 혈액 및 체액 노출현황과 영향 요인 - 감염관리 지식 및 수행도 중심으로-)

  • Kim, Hee-Jung;Kim, Nam-Cho
    • The Journal of Korean Society for School & Community Health Education
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    • v.15 no.3
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    • pp.17-30
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    • 2014
  • Objectives: The purpose of this study was to investigate the status of exposure to blood and body fluid and factors affecting on blood and body fluid exposure of nursing students including knowledge, performance regarding standard precautions. Methods: 280 nursing students in D-city and S-city participated in this study. Data collection was conducted from January to March 2012. Students' knowledge and performance on standard precautions of infection control in hospitals were measured using the measurement developed by Hong(2010). Data analysis was performed using descriptive statistics, t-test, one way-ANOVA, ${\chi}^2-test$, Pearson correlation coeficient, logistic regression by the SPSS WIN 18.0 program. Results: 58.6 percent of subjects experienced a exposure to blood and body fluid. The level of nursing students' knowledge level regarding standard precautions was $22.44{\pm}2.11$ and performance level was $4.31{\pm}0.50$. The factors affecting on blood and body fluid exposure of nursing students were knowledge level and education type about infection control. Conclusions: Based on the findings of this study, to decrease the exposure to blood and body fluid of nursing students, a proper education need to be stressed to improve nursing students' infection control knowledge and awareness.

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Development and Performance Evaluation of Body Armor for Wear Comfort Enhancement (착용쾌적성이 향상된 방탄복 개발과 성능평가)

  • Kim, Soyoung;Lee, Yejin;Hong, Kyunghi
    • Journal of the Korean Society of Clothing and Textiles
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    • v.36 no.10
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    • pp.1050-1057
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    • 2012
  • This study helps develop a cool body armor that maintains a tight-fit configuration to the body surface and evaluates the performance of newly developed body armor in a wear test. Three types of body armor were used for evaluation. One was a tight fitting body armor that was constructed to improve the degree of fit and ease of movement for Korean soldier using 3D technology. Another was ventilating body armor with attached spacers on the shoulder to reduce the thermal stress on the soldier. The third was a prevailing body armor produced by a Korean body armor company. In order to evaluate the performance of the body armor, a human wear test, a thermal mannequin test, and computational fluid dynamics (CFD) were executed. Five subjects participated in the wear test. Subjective wear sensation, total amount of sweat and dynamic change of clothing microclimate were observed during and after exercise on a treadmill; subsequently, it was found that subjects rated tight fitting body armor and ventilating body armor lighter, drier, and easier to move than the conventional body armor (p<.05). Total amount of sweat was the least in the case of ventilating body armor. The thermal resistance and vapor resistance of the ventilating body armor were improved remarkably. In addition, the skin temperature of the ventilating body armor with spacers was lower than the tight fitting body armor by at least $1^{\circ}C$ in the CFD result. It is noted that thermal-wet comfort of the 3D body armor with ventilating feature is superior to the conventional body armor, especially when the ventilating channel is not closed due to a backpack.

A Study on the Formative Characteristics of Allegory Appearing in Body Painting (바디페인팅에 나타난 알레고리의 조형적 특성에 관한 연구)

  • Lim, Mi-Yun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.13 no.4
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    • pp.189-198
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    • 2011
  • The existing approaches to the body painting have been dominated by the angles focused on the 'performance' and the 'body art'. The performance-focused approach, in which body painting serves simply as a make-up for the performer, one of the elements of performance to help it communicate effectively its meaning and come to perfection, might be in itself lacking in the attention to the placement of the body painting as a new genre of art. This thesis has two aims to explain the concept of Allegory as the contemporary meaning and to examined the formative characteristics and other characteristics of Allegory through theoretical research. For this purpose, this study is based upon allegorical cognition of Walter Benjamin and the allegorical method of Craig Owens. The formative characteristics of allegory are summarized as appropriation, deconstruction and site-specificity as follows. First, the constructed result has contrived characters because its image which derived from body painting based on the past shown image. Second, Allegoric body painting refuses an aesthetically valuable piece which can be interpreted formal completion, it shows intactly deconstruction of its configuration, substance and style. Third, Allegoric body painting has site-specificity facts which can be expressed for diverse meanings. Through these facts, the final goal of this thesis will find specific character for Allegory and apply to body painting.

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A Study of Multi-Units (Chain-affiliated) Organizations in Social Welfare Service Settings : Focused on the Impact of Chain-affiliated Social Service Centers on their Performance (사회복지조직의 집단화(체인화) 현상에 대한 연구 : 사회복지관의 집단화가 조직성과에 미치는 영향분석을 중심으로)

  • Choi, Jae-Sung
    • Korean Journal of Social Welfare
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    • v.49
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    • pp.296-318
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    • 2002
  • The purpose of this study is to empirically analyze whether or not, if a community social service center was affiliated with a governing body running other community social service centers, the center would have better organizational performance in comparing to an independently running center. Data was collected from a nationwide mailed and self-administered survey, which 237 centers out of 343 community social service centers responded. Even if, the response rate was 72%, 218 centers were finally analyzed due to the weakness of reliability and incompleteness. By the way, measurement of organizational performance as the dependent variable has been substituted of the results of nationwide organizational evaluation project as the secondary data. One of findings is that 68% of 218 responding centers appeared to be affiliated with a governing body which running more than three other centers, while 41% being affiliated with a body which running more than five other centers. However, a logistic regression analysis which using organizational performance as the dependent variable, has failed to verify the hypothesis that a center which affiliated with a governing body running other centers has better organizational performance when comparing to an independent center. The researcher assumes that a part of governing bodies has better performance and improves competitiveness while the other larger part of them pursues simple organizational growth. Thus, this situation made that the overall evaluation of being affiliated with a large governing body was not positive.

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