• Bulletin of the Korean Space Science Society
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• 2007.10a
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• pp.135-138
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• 2007

The present work is to estimate the stability region of the State-Dependent Riccati Equation (SDRE) controlled system, which is used for a decentralized coordinated attitude control in satellite formation flying. In this research, currently emerging methods which estimate region of attraction for the SDRE controllers are introduced and the methods are applied to attitude control systems. The results guarantee the stability of the given decentralized coordinated attitude control system in satellite formation flying.

• Journal of the Korea Institute of Military Science and Technology
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• v.3 no.2
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• pp.131-139
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• 2000

A design of CPS attitude determination system is described in this paper. The designed system is a low cost high precision 24 channel single frequency GPS(Global Positioning System) receiver which provides a precise absolute heading and pitch (or roll) as well as a position. It uses commercial chip-set and consists of two RF parts, two signal-tracking parts, a processor, memory parts and I/Os. In order to determine precise attitude, accurate carrier phase measurements and an efficient integer ambiguity resolution method are required. To meet these requirements, a PLL (Phase Locked Loops) is designed, and an algorithm called ARCE (Ambiguity Resolution with Constraint Equation) is adopted. The hardware and software structure of the system will be described, and the performance evaluated under various conditions will be presented. The test results will promise that more reliable navigation system be possible because the system provides all navigational information such as position, velocity, time and attitude.

• Journal of dental hygiene science
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• v.12 no.6
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• pp.652-659
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• 2012

The purpose of this study was to examine whether senior simulation would bring any positive change to the attitude of dental hygiene students toward the elderly. The experimental group consisted of 58 dental hygiene students at a college. The experimental procedure was to do activities for 40 minutes wearing aging simulation suit. Self administered questionnaires were used to ask the attitude toward the elderly after senior simulation. The data were analyzed with SPSS program. General and aging related characteristics of subjects were analyzed through descriptive statistics. To testify the differences of the attitude after senior simulation, paired t-test was used. An experiment was conducted from May 27 to June 14, 2012, and the findings of the study were as follows: 1. There wasn't any perfect positive change in the overall attitude of the students toward elderly people after senior simulation, but their attitude got a little more positive whereas they took a neutral attitude in the past; 2. The students who had ever lived with elderly people under the same roof and who had ever received education related to the elderly underwent a more positive change in their attitude toward the elderly; 3. To what extent senior simulation was helpful for the understanding of the elderly was checked, and the majority replied that it was very useful or useful for the understanding of their physical aspects. The findings of the study confirmed that senior simulation didn't change the overall attitude of the students toward the elderly in a positive way yet brought about some positive changes in part. Therefore senior simulation is expected to be one of significant educational programs that could encourage students to have a better physical understanding of the elderly, to take a more positive attitude to them and to provide them with quality dental service.

• Journal of Korean Academy of Nursing
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• v.34 no.6
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• pp.974-982
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• 2004

Purpose: This study was performed to explore the effect of senior simulation on nurses' attitudes toward the elderly. Method: Twenty-seven nurses working in various settings such as acute hospitals, community health centers, geriatric hospitals, and clinics were recruited. Among them, 25 subjects completed the whole experimental protocol. Aging Semantic Differential Scaling was utilized to evaluate attitudes toward the elderly and 'Suit for Experiencing Being Aged' from the Sakamoto Model was provided for the experiment. Before and after the experiment subjects filled out questionnaires. Result: Attitude score before experiment was 4.36, which indicates neutral attitude. Objective attitude scores were not different significantly after experiment. However subjective statements indicated attitude changes in a positive way. Conclusion: Senior simulation can affect nurses' attitude toward elderly in subjective way. That is, nurses became more empathetic and understanding to elderly's physical limitations and felt more initiative nursing approach were needed in caring elderly.

• The Journal of Korean Physical Therapy
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• v.16 no.4
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• pp.142-167
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• 2004

The aim of this descriptive study was to investigate the general knowledge and attitude about HIV/AIDS among physical therapists and physical therapy students. Many physical therapists are afraid of AIDS patients bacause they have a little information of AIDS and fear of HIV infection from AIDS patients at work site. The study surveyed by means of a self-administered questionnaire consisted of 271 physical therapists and 378 physical therapy students. This study was carried out from April, 2003 to October, 2003 for collecting data. The findings of this study can be summarized as follows. 1) The physical therapist and physical therapy students were conscious of need for physical therapeutic intervention for complication of HIV/AIDS. 2) The physical therapist and physical therapy students were conscious of need for educational program about HIV/AIDS. 3) The knowledge of transmission mode in sexual intercourse of HIV/AIDS influence the attitude of physical therapists to patients with HIV/AIDS. 4) The knowledge of prevention of HIV/AIDS influence the attitude of physical therapists to patients with HIV/AIDS. 5) The knowledge of regarding symptom of HIV/AIDS influence the attitude of physical therapists to patients with HIV/AIDS. 6) The knowledge of general transmission mode of HIV/AIDS influence the attitude of physical therapists and physical therapy students to patients with HIV/AIDS. 7) The knowledge of transmission risk factors in work site of HIV/AIDS influence the attitude of physical therapists and physical therapy students to patients with HIV/AIDS. 8) The knowledge of needs for prevention in work site of HIV/AIDS influence the attitude of physical therapists to patients with HIV/AIDS. In conclusion, physical therapists and physical therapy students with more knowledge of HIV/AIDS could positively treat HIV/AIDS patients.

• Journal of the Korean Society of Earth Science Education
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• v.16 no.3
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• pp.351-362
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• 2023

This study aimed to identify structural relationships among variables by examining the direct and indirect effects of cognitive factors such as self-regulated learning strategy and definitional factors such as attitude toward science and scientific self-efficacy on science core competency in middle school students. To this end, the researcher examined the causal relationships among the variables using data from 438 students in all grades at S middle school in a metropolitan city. The results showed that middle school students' self-regulated learning strategy, attitude toward science, and scientific self-efficacy had a direct effect on science core competency, and that self-regulated learning strategy had a direct effect on attitude toward science and scientific self-efficacy. In addition, middle school students' self-regulated learning strategy had an indirect effect on science core competency through attitude toward science and scientific self-efficacy. Therefore, it is necessary to educate students from a comprehensive perspective that considers cognitive factors such as self-regulated learning strategy and defining factors such as attitude toward science and scientific self-efficacy in order to foster science core competency in middle school students.

• Journal of The Korean Association For Science Education
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• v.33 no.2
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• pp.511-521
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• 2013

This study aims to investigate the effects of science writing activities on the students' science-related attitude, motivation for learning science, and academic achievement. One hundred and twenty seven second graders of a middle school located in Gyeonggi province participated in this study. The experimental group performed science writing activities, while the comparative group performed problem solving activities at the end of the regular science lessons over 30 class hours. For the students' science-related attitude and motivation for learning science, TOSRA, PALS, and MSLQ were used with some modification and supplementation. For the students' academic achievement, scores on science examinations were used. The results of this study are as follows: First, the test of the science-related attitude showed that science writing activities have positive effects on the cultivation of sciencerelated attitude, as for the sub-factors, 'attitude towards scientific inquiry,' 'pleasure of science lessons,' and 'active attitude towards science'(p<.05). Second, the test of motivation for learning science showed that the science writing activities had positive effect on the improvement in students' motivation, as for the sub-factors, 'difference in values on task' and 'self-efficacy'(p<.05). Third, science writing activities are effective on improvement in the students' academic achievement(p<.05), especially on the high-level achievement group.

• Journal of The Korean Association For Science Education
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• v.42 no.1
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• pp.149-160
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• 2022

Comparative studies using large-scale data such as TIMSS, PIRLS, and PISA inform us of the effectiveness of each educational system. Even though samples in the large-scale studies were representative, admitting potential discrepancy when applying the findings of the large-scale studies to local educational system is still needed. This study examines the structural relationship among students' attitude towards science, learning support from teachers, school life, and science academic achievement with both large-scale data and local comparative study data utilizing same variables. Responses on the TIMSS 2019 of 5,554 Korean seventh-grade students and National Assessment of Educational Achievement (NAEA) 2019 of 6,365 third-grade middle school students were used. The results indicate that: a) school life did not affect the science achievements in both data. However, in NAEA 2019, students' attitude mediated the relationship between school life and science achievement; b) learning support from teachers had a significant impact on TIMSS science achievements, and also had positive effect on achievement through students' attitude in TIMSS. On the other hand, learning support had a positive effect on achievement only when student's attitude mediated the relationship in NAEA; c) students 'attitude toward science had positive effect on science achievement on both data; d) the impact of gender was different on school life, academic achievement, students 'attitude towards science, and learning support from teachers on both data; and e) the impact of the number of books differed as well. There were differences in results between the international and domestic research, which inform us that we need to pay attention when interpreting the domestic environment through the results of international research.

• The Korean Journal of Community Living Science
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• v.23 no.1
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• pp.41-50
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• 2012

This study was performed to understand the depression of children with hearing impairment with relation to their mothers' nurturing attitude and sign language level. The subjects were 131 hearing impaired children aged from 9 to 16 years and their mothers, who had no hearing impairments. The children's depression was assessed by CDI(Kovacs 1983) adapted by Cho and Lee(1990), and the maternal attitude was measured through the instrument developed by Oh and Lee(1982) and revised by Lim(1987). The results were as follows. First, the girls' depression was higher than the boys', and children in a dormitory type of school showed higher depression than those in a general type of school. Second, children's depression did not show differences according to mother-child communication methods but differed according to mothers' sign language level. Children whose mothers had high level of sign language showed the highest depression and those whose mothers had beginning level of sign language showed the lowest depression. And mothers' affective, goal- achieving and rational attitude were negatively related with children's depression. Third, the depression of hearing impairment children was influenced mainly by the maternal affective attitude, and the next order was the type of school the children attend.

• Journal of Distribution Science
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• v.16 no.1
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• pp.17-27
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• 2018

Purpose - The purpose of this study is to practically analyze the effect of the brand equity of Korean food companies in Vietnam on the brand attitude and purchase intention of Vietnamese consumers. Research design, data, and methodology - In total, 240 subjects were examined in this study. The collected data were analyzed using statistical programs SPSS 21 and AMOS 21. The credibility of the variables was examined using the exploratory factor analysis, and confirmatory factor analysis. The hypothesis was examined through the structural equation model analysis. Results - It is proven that brand image and perceived quality are accepted, and the brand awareness is rejected from the hypothesis that "the brand equity has a positive effect on the brand attitude". However, the brand image and brand awareness are accepted, and the perceived quality is rejected from the hypothesis that "the brand equity has a positive effect on the purchase intention". Conclusions - The following are the conclusions of the study. First, among the components of brand equity, the brand image is confirmed to positively affect both brand attitude and purchase intention. Second, high brand awareness does not necessarily lead to positive brand attitudes of the consumers. Third, The brand image appears to positively affect the brand attitude and purchase intention. However, the awareness of consumers of a brand does not directly lead to positive consumer attitudes.