• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1994년도 Proceedings of the Korea Automatic Control Conference, 9th (KACC) ; Taejeon, Korea; 17-20 Oct. 1994
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• pp.213-217
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• 1994

The attitude stability of a satellite in spin-stabilized injection mode which contains a liquid pool is investigated. The satellite model for investigation is a two-body system consisting of a the main body, which is symmetric and rigid, representing the spacecraft, and a spherical pendulum, representing the liquid pool. Assuming that both spacecraft and pendulum are in states of steady spin about the symmetry axis of the spacecraft, the coupled nonlinear equations of motion for the system are simplified. In this paper, by using the multiple scales method, the possible resonance conditions in terms of the system parameters are determined and the corresponding near-resonant solutions are derived.

• 여성건강간호학회지
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• 제13권4호
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• pp.327-335
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• 2007

Purpose: The descriptive study was designed to examine the relationship of eating attitudes to the internalization of sociocultural attitudes, body shape satisfaction, anger and anger expression in college women. Method: 247 women were recruited from one college located in Seoul, Korea. The instruments used were the Internalization subscale of SATAQ-3R, BSQ for body shape satisfaction, Spielberger's state trait anger expression inventory-Korean version for anger and anger expression, and the Eating Attitude Test(EAT-26) for eating attitudes. Results: The score of EAT significantly correlated with internalization, state anger, body shape satisfaction, and anger expression except trait anger. The significant predictors of eating attitudes in college women were body shape satisfaction and anger expression, explaining 55% of the variance in eating attitudes. Conclusion: This study showed that body shape satisfaction is an important predictor for an eating disorder. Therefore, various programs for cognitive changes correcting the understanding about body and weight need to be developed in the future.

• 한국의류학회지
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• 제35권6호
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• pp.678-686
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• 2011

Older people have increased interest and involvement in controlling their aging body through physical exercise and dieting. This study examined the relationship between body image and the participation of older people in exercise and dieting. Two measures of body image (appearance attitude and appearance orientation) were used to study their relationships to participation in exercise and dieting among older people. Data were collected via a mail survey of older married couples residing in three U.S. metropolitan areas of Florida. A total of 94 couples who were 60 years older participated in this study. Multiple regression was run separately for men and women. The results indicated that for both men and women, appearance attitude was inversely related to dieting and positively related with exercise (even though the relationship with exercise was weak for men). Appearance orientation was not significantly related to exercise or dieting for both men and women. A new scale development on body image for an aging population was suggested. Various activities performed by aging people to manage their aging body and appearance need to be studied as related to physical and psychological well-being that includes body image.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.342-342
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• 2000

We present 3-axis stabilized spacecraft attitude determination algorithm using the magnetometer. The magnetometer has been used as a reliable, light-weight and inexpensive sensor in attitude determination and reaction wheel momentum dumping system. Recent studies have attempted to use the magnetometer when other attitude sensor, such as star tracker, fails. The differences between the measured and computed the Earth's magnetic field components are spacecraft attitude errors. In this paper, we propose extended Kalman filter(EKF) to determine spacecraft attitude with the magnetometer data and gyro-measured body rates. We develop and simulate this algorithm using MATLAB/SIMULINK. This algorithm can be used as a backup attitude determination system.

• 한국식품영양학회지
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• 제22권2호
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• pp.205-214
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• 2009

Diet is an important focus in solidifying the fundamentals of health; thus, it is necessary to offer and manage accurate and correct information. This study examined the effects of body part satisfaction and attitude on diet, in female college students, who are known to be very interested in their appearances and tend to have a strong propensity to consume. The data were gathered using questionnaires answered by 101 female college students living in Daegu City, after classifying the women into normal weight and overweight groups, respectively. According to the analyzed results, there were no significant differences in satisfaction by body part between the normal weight and overweight groups, however, both groups were found to be dissatisfied with the following body parts, in the order of: thighs > legs > and hips. The motivation factors for weight control were found to be in order: not having a boyfriend > lacking of confidence > seeing slender entertainment stars, and there were no significant differences between the two groups. Finally, the main reasons for weight control were in order: appearance > health > getting a job. It is anticipated that these results will contribute to preparing systematic solutions to promote healthy diets and body satisfaction in society, and will help bring a desirable change in perceptions about diet.

• 정신신체의학
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• 제18권1호
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• pp.40-47
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• 2010

연구목적 : 자기신체상은 자아존중감과 체중조절행위와 밀접한 연관이 있고 특히 여자 청소년에서는 중요한 관련이 있다고 알려져있다. 이 연구는 체질량지수로 측정한 신체이미지와 식이장애와 연관된 비정상식이행동이 우울증과 자살사고에 미치는 영향을 알아보고자 한다. 방 법 : 서울 한 지역의 고등학교 여학생 239명을 대상으로 체질량지수를 측정하고, 청소년을 위한 식이태도검사(Eating Attitude Test for Korean Adolescents), 자아존중감척도, 충동성척도, 벡 우울척도, 벡 자살사고 척도를 시행하였다. 결 과 : 연구대상에서 식이장애 위험군은 총 10%(24명)이었다. 대조군에 비해 우울증상을 강하게 경험하고 있었고 현재 체질량지수와 이상적 체질량지수의 차이가 클수록 우울감, 자살사고, 비정상적 식이행동의 정도가 커지고 자아존중감은 낮아졌다. 그중에서 체질량지수의 차이가 통계적으로 가장 의미있는 예측인자였다. 결 론 : 연구대상군이 전체적으로 정상체중 범위임에도 불구하고, 현재의 체형과 이상적 체형사이의 괴리가 클수록 우울과 자살사고가 컸다. 여자 청소년의 식이장애 발생과 우울, 자살사고의 예방을 위해 체중조절, 정상식이습관에 대한 교육적 접근이 필요하다는 것을 알 수 있었다.

• Journal of Astronomy and Space Sciences
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• 제20권3호
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• pp.205-216
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• 2003

회전안정화 로켓 모터를 이용하는 upper stage 위성체의 자세 불안정 현상을 연구하였다. 이 위성체는 대칭형의 본체와 내장된 유동질량으로 구성되며, 유동질량은 구진자로 모델링되었다. 종래의 선형모델이 갖는 단점을 보완하기 위해 정확한 시변 비선형 방정식을 사용하고, 본체 및 구진자 모두 회전 대칭축에 대해 정상상태에 있다고 가정하였다. 본 논문에서는 진자에 대한 준정상해(quasi-stationary solution) 및 공진조건을 파라미터의 함수로 결정하였다. 공진조건의 분석결과 유동질량은 계수자극 및 외부자극을 동시에 받으며, 자극을 받은 유동질량으로부터 에너지가 본체에 유입되면서 위성체는 불안정한 장동운동을 일으키는 것으로 확인되었다. 본 논문에서는 수치시뮬레이션 예시를 통하여 주어진 위성체 모델에 대해 발생가능한 공진조건에서 진자의 운동, 위성체 각 운동량 및 섭동모멘트의 관계 규명과 로켓모터 추진 후에 자세운동이 어떻게 변화하는가를 설명하였다.

• 한국농촌생활과학회지
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• 제9권1호
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• pp.9-18
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• 1998

This study aimed to find out the relationship between the body shape and the degree of obesity and the eating attitude influenced by the eating disorder among male and female college students. Followings are the summary of the results obtained in this study : 1. Male students perceived their own body shape properly, however female students perceived their body shape fatter than their real one even if almost all of them were maintaining normal weight. 2. For both male and female students the EAT-26 score was high when they perceived themselves fat, and in the group of students perceiving themselves fat the F I score was high and the F III score was low. Contray to this, in the group of students perceiving themselves thin the F nt score was high. The EAT-26 of female students marked higher than that of males in total questionares. 3. The EAT-26 score was high for both male and female students whose degree of obesity was high. The higher the degree of obesity the higher the F I score, and the lower the degree of obesity the higher the F III score. 4. For both male and female students the dieting frequency was high when they were in the group perceiving themselves fat and in the group with the high degree of obesity. And the number of females' is higher than that of males'. For male students there was no significant difference of dieting frequency in accordance with the perceived body shape and the degree of obesity. However, for female students the frequency was high when they were in the group perceiving themselves fat and in the group with the high degree of obesity. The frequency was high when they were in the group perceiving themselves thin and in the group with the low degree of obesity. 5. For the matter of relationship between the degree of obesity and the frequency of buying meals there was significant difference only in the female students and the frequency of buying meals was higher when the degree of obesity was higher.

• 한국생활과학회지
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• 제16권2호
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• pp.395-405
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• 2007

The women selected by random sampling were classified into four groups by their body cathexis and Make-up attitude in order to investigate differences in Clothing Value and Make-up behavior. The result are as follows. Cluster was classified into four groups: positive congruity(G1), positive incongruity(G2), negative congruity(G3), negative incongruity(G4). Four groups showed meaningful difference each other between the peculiarity of Clothing value and Make-up behavior. Make-up behaviors were different at the peculiarity of minutely divided groups under the standard of physical satisfaction and Make-up attitude, and they showed difference in the influence of value affected to each behavior. So it was testified that Make-up behavior can be different depending on the value of respective persons.

• 여성건강간호학회지
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• 제17권2호
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• pp.126-136
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• 2011

Purpose: The increase of cosmetic surgery procedures is partly motivated by more positive attitude toward cosmetic surgery as a means of improving physical appearance. In this study factors expected to predict need for cosmetic surgery were examined. Methods: A descriptive design was used with 321 high school girls who completed a questionnaire about sociocultural attitudes toward appearance, body image, self-esteem, and need for cosmetic surgery. Stepwise multiple regression analysis was performed to examine factors affecting need for cosmetic surgery. Results: Bivariate correlations showed that need for cosmetic surgery was positively correlated with internalization and awareness of sociocultural attitudes toward appearance, and appearance orientation in body image and negatively correlated with self-esteem and ideal body mass index (BMI). Multiple regression showed that the predictive variables explained 22.1% in need for cosmetic surgery. The significant factors influencing need for cosmetic surgery were greater internalization and awareness of sociocultural attitudes toward appearance, better appearance evaluation and higher appearance orientation in body image, lower self-esteem, and lower ideal BMI. Conclusion: Overall, results of this research suggest that prevention of media influence and body image disturbances, and promotion of self-esteem are very important to young women.