• The Journal of Korean Physical Therapy
• /
• v.24 no.1
• /
• pp.15-21
• /
• 2012

Purpose: The purpose of this study was to investigate the influence of adolescent's scoliosis on the stress level and study-attitude, to inform the public that there exist an important correlation between adolescent's scoliosis and stress, as well as, study-attitude, using a questionnaire. Methods: For this study, questionnaires were distributed to elementary school in G city from May 10 through May 31, 2011. This study measured a primary scoliosis-test by a scoliometer with 300 elementary school students and a secondary test by Cobb's angle using an X-ray. The subjects were divided into 2 groups (normal group (n=20), scoliosis group (n=20)). The collected data were analyzed by a t-test and Pearson analysis. Results: As a result of this study, the Cobb's angle showed significant difference between the scoliosis group and the normal group (p<0.001). Also, it tended to have a greater stress level in the scoliosis group than the relationship between scoliosis and the stress or study-attitude compared to the normal group (p<0.05). The correlation of stress according to Cobb's angle showed a positive relationship (r=0.36), and the correlation of study-attitude to Cobb's angle showed a negative relationship (r=-0.04). Conclusion: In conclusion, this study showed that scoliosis affects stress and study-attitude. We hope that this result would help diagnose adolescent's scoliosis in anearly stage and prevent any phychologic and social problems relating to it.

• Journal of Korean society of Dental Hygiene
• /
• v.14 no.4
• /
• pp.479-484
• /
• 2014

Objectives : The aim of the study is to investigate the oral health knowledge, attitude and dental caries experience in Korean 12-year-old adolescents. Methods : The subjects were 2,196 adolescents living in Seosan, with an average age of 12.2 years. Data were collected using a self-administered questionnaire from April 10 through June 10, 2011. A trained investigator made an oral examination of them in natural light, using a mirror and an explorer to determine their DMFT index. Results : The prevalence rate of dental caries of adolescents was 59.1%. The DMFT index of the subjects was 1.98, which was lower than the national mean of 2.2 for the same age. The DMFT index was significantly higher in the female(2.25) than the male group(1.72). The attitude of oral health was positively related to DMFT index in this study(OR=1.25; CI=1.01-1.54). It appears that knowledge and attitude concerning oral health, among young Korean 12-year-old adolescents living in Seosan, are in need of improvement. Conclusions : Based on the findings, dental caries experience is associated with attitude of oral health. This result suggests that the implementation of oral health promotion should be considered for various factors related to attitude of oral health in adolescents.

• Journal of Astronomy and Space Sciences
• /
• v.26 no.1
• /
• pp.31-46
• /
• 2009

An Unscented Kalman Filter (UKF) for estimation of the attitude and rate of a spacecraft using only magnetometer vector measurement is developed. The attitude dynamics used in the estimation is the nonlinear Euler's rotational equation which is augmented with the quaternion kinematics to construct a process model. The filter is designed for small satellite in low Earth orbit, so the disturbance torques include gravity-gradient torque, magnetic disturbance torque, and aerodynamic drag torque. The magnetometer measurements are simulated based on time-varying position of the spacecraft. The filter has been tested not only in the standby mode but also in the detumbling mode. Two types of actuators have been modeled and applied in the simulation. The PD controller is used for the two types of actuators (reaction wheels and thrusters) to detumble the spacecraft. The estimation error converged to within 5 deg for attitude and 0.1 deg/s for rate respectively when the two types of actuators were used. A joint state parameter estimation has been tested and the effect of the process noise covariance on the parameter estimation has been indicated. Also, Monte-Carlo simulations have been performed to test the capability of the filter to converge with the initial conditions sampled from a uniform distribution. Finally, the UKF performance has been compared to that of the EKF and it demonstrates that UKF slightly outperforms EKF. The developed algorithm can be applied to any type of small satellites that are actuated by magnetic torquers, reaction wheels or thrusters with a capability of magnetometer vector measurements for attitude and rate estimation.

• Journal of Korean Academy of Nursing
• /
• v.52 no.3
• /
• pp.324-340
• /
• 2022

Purpose: This study determined acculturative stress' effect on the life satisfaction of multicultural adolescents based on Roy's Adaptation Model and some earlier studies. Further, it examined the sequential multiple mediating effects of bicultural acceptance attitude, self-esteem, and social withdrawal on life satisfaction. Methods: Participants included 1,163 multicultural adolescents who participated in the sixth Multicultural Adolescents Panel Study. A hypothesis test was conducted using Hayes' Process Macro Model 81. Results: Life satisfaction increased with a decline in acculturative stress. Each of bicultural acceptance attitude, self-esteem, and social withdrawal had a single mediating effect on the relationship between acculturative stress and life satisfaction in multicultural adolescents. The sequential multiple mediating effects of bicultural acceptance attitude and self-esteem were confirmed significant after their impact on the relationship between acculturative stress and life satisfaction was analyzed. Bicultural acceptance attitude and social withdrawal were found to have a significant sequential multiple mediating effect on the relationship, as well. Conclusion: This study's results demonstrate that acculturative stress reduction is critical to improving multicultural adolescents' life satisfaction. Bicultural acceptance attitude, self-esteem, and social withdrawal have a single mediating or sequential multiple mediating effect on the relationship between multicultural adolescents' acculturative stress and life satisfaction. The findings, which highlight mediating effects, indicate that by increasing bicultural acceptance attitude and self-esteem, and reducing social withdrawal, multicultural adolescents' life satisfaction can be improved.

• Journal of the Korea Society of Computer and Information
• /
• v.21 no.10
• /
• pp.21-28
• /
• 2016

The aim of this research is to analyze Perceived Usefulness(PU) and Perceived Ease of Use(PEOU) based on Technology Acceptance Model in , and how viewing experiences and knowledge of motion graphics have an impact on attitude toward using and behavioral intention to use. Both usability for learning and usability for appreciation in terms of PU have significant correlations with the degree of satisfaction and immersion, and behavioral intention to use. On the other hand, PEOU has an influence on degree of exhibition satisfaction and immersion, and onto behavioral intention to use with the exception of intention to revisiting . Unlike PU or PEOU, previous viewing experiences do not have correlation with attitude toward using and behavioral intention to use. Only previous knowledge of motion graphics has a correlation with degree of satisfaction and immersion, and behavioral intention to use. As the influence on PU and PEOU's attitude toward using and and behavioral intention to use has been verified, our findings show that two variables of TAM enable the prediction of user's technology acceptance on digital exhibitions and as a result prove the suitability for TAM as an evaluation model for digital exhibition of remediating the originals. This study offers a fresh understanding of the importance of motion graphic effects which influence attitude toward using and behavioral intention to use from the perspective of curating methodology.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.32 no.1
• /
• pp.147-156
• /
• 2008

The purpose of this study is to find out the important factors and efficient strategies concerning Internet marketing. This study contributes to the effect on shopping behavior of Internet consumer applying technology acceptance model(TAM) in the Internet fashion merchandise shopping environment. The areas of study interest are, the perceived hedonic values, the perceived usefulness, the perceived ease of use, attitude toward using in Internet shopping mall and purchase intention of the fashion merchandise. To fulfill this objectives, a survey was conducted from May 20 to June 20 in 2007, and an subject of study is the college students and business man aged from 20s to 30s in purchase experience of the fashion merchandise to Internet shopping malls. Data collected over the Internet, and analyzed the 217 subjects. The empirical studies were summarized as follows. First, the perceived hedonic values, the perceived usefulness, and the perceived ease of use had an effect on attitude toward using in Internet fashion shopping mall. Second, the perceived hedonic values had an effect on the perceived usefulness in Internet fashion shopping mall. Third, the perceived ease of use had an effect on the perceived usefulness in Internet fashion shopping mall. Forth, the attitude toward using had an effect on intention of repurchase in Internet fashion shopping mall.

• The Journal of the Korea Contents Association
• /
• v.22 no.1
• /
• pp.359-367
• /
• 2022

The purpose of this study is to examine the perception of college students about English classes using TED talks and to examine whether TED talks are appropriate as a learning material for college English. As a college English subject, 50-60 minutes of online classes were conducted for one semester where TED talks were used, and the data collected by conducting a survey on learners' English learning motivation, interest, attitude, satisfaction, and learning effect were analyzed utilized SMART PLS 3. The results are as follows. First, English learning motivation had a statistically significant effect on learning attitude while it did not affect the learning satisfaction. Second, the level of interest in the TED Talk-using class had a positive effect on the learning attitude and satisfaction. Third, the learning attitude positively affected the learning effect perception. Fourth, satisfaction with the TED Talk class had a positive effect on the learning effect perception. In conclusion, English classes using TED talk can increase the interest and satisfaction of learners, and induce active class participation, which lead to a positive perception in learners' learning effects. Therefore, this study implies that TED talks are valuable and significant enough as materials in college English classes.

• Journal of Institute of Control, Robotics and Systems
• /
• v.10 no.11
• /
• pp.1037-1043
• /
• 2004

In this paper, a new fault detection and isolation algorithm fur inertial sensor system is proposed. To identify the inertial sensor fault, single antenna GPS receiver is used as an effective redundancy source. To use GPS receiver as redundancy for the inertial sensors, the algorithm to estimate the attitude and acceleration using single antenna GPS receiver is adopted. By using Doppler shift of carrier phase signal and kinetic characteristics of aircraft, attitude information of aircraft can be obtained at the coordinated flight condition. Based on this idea, fault diagnosis algorithm for inertial sensors using single antenna GPS based attitude is proposed. For more effective FDI, decision variables considering the aircraft maneuver are proposed. The effectiveness of the proposed algorithm is verified through the numerical simulations.

• Journal of Institute of Control, Robotics and Systems
• /
• v.11 no.3
• /
• pp.222-227
• /
• 2005

Resolving the integer ambiguity of GPS carrier phase measurements is the most important routine in precise positioning. In this paper, success rate is analyzed when using baseline information in the process of determining attitude. The result is verified through the simulation. Determining the initial position for the ambiguity resolution is estimated by using code measurement and baseline constraint. Success rate is estimated using covariance of the formed initial position. UKF has been used to overcome the nonlinear baseline condition during the process so that the higher success rate has been obtained compared with the general attitude determination.

• The Journal of Korean Society for School & Community Health Education
• /
• v.1 no.1
• /
• pp.83-93
• /
• 2000

The purpose of this study were to suggest the method of sex education by designing and implementing multimedia program about sex education, to search the efficiency between a teaching using multimedia program and a teaching of traditional method. To put above aims into practice, these were required : 1. are there any differences in the alteration of sex attitude according to teaching methods. 2. are there any differences in the completion of sex knowledge according to teaching methods. 3. are there any differences in the alteration of sex attitude according to learning level and teaching methods. 4. are there any differences in the completion of sex knowledge according to learning level and teaching methods. 5. are there any differences in the alteration of sex attitude according to sex and teaching methods. 6. are there any differences in the completion of sex knowledge according to sex and teaching methods. To carry out a reseach for this purpose, the subjects for this study were 160 sixth grade students from 2 elementary schools in Pu-Chun, Kyung Ki. The tools for study were two kind of questionnaires: sex knowledge test, sex attitude test. Each test consists of 20 items. Collected data was analysed with t-test by means of SPSS program. The main results of this study are as follow: 1. The Alteration of sex attitude according to teaching methods. There was a significant difference among teaching methods(P<.001). a teaching using multimedia program was more efficient than a teaching of traditional method in the alteration of sex attitude. 2. The Completion of sex knowledge according to teaching methods. There was a significant difference among teaching methods(P<.001). a teaching using multimedia program was more efficient than a teaching of traditional method in the completion of sex knowledge. 3. The Alteration of sex attitude according to learning level and teaching methods. There was a significant difference among teaching methods in the superior class. a teaching using multimedia program was more efficient than a teaching of traditional method in the alteration of sex attitude(P<.001). However, there was not a significant difference among teaching methods in the inferior class(P>.05). 4. The Completion of sex knowledge according to learning level and teaching methods. There was a significant difference among teaching methods in the superior class. a teaching using multimedia program was more efficient than a teaching of traditional method in the completion of sex knowledge(P<.001). Also, there was a significant difference among teaching methods in the inferior class. a teaching using multimedia program was more efficient than a teaching of traditional method in the completion of sex knowledge(P<.001). 5. The Alteration of sex attitude according to sex and teaching methods. There was a significant difference among teaching methods in the man class. a teaching using multimedia program was more efficient than a teaching of traditional method in the alteration of sex attitude(P<.01). However, There was not a significant difference among teaching methods in the woman class(P>.05). 6. The Completion of sex knowledge according to sex and teaching methods. There was a significant difference among teaching methods in the man class. a teaching using multimedia program was more efficient than a teaching of traditional method in the completion of sex knowledge(P<.001). Also, there was a significant difference among teaching methods in the woman class. a teaching using multimedia program was more efficient than a teaching of traditional method in the completion of sex knowledge(P<.05).