• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.1
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• pp.131-140
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• 2013

Due to the limitations of the existing indoor positioning system depending on the radio wave, at present, it is required to introduce a new method in order to improve the accuracy in indoor environment. Recently, bio-inspired technology has become the future core technology. Thus, this study examined the accurate positioning method applying the abilities that animals with homing instinct measure their position by searching geomagnetic field with the use of their biomagnets. In order to confirm the applicability of geomagnetic field, a new source for indoor positioning, this study separated the constituent materials and building structure and designed the structures that can carry the actual magnetic field sensor and the data collection module. Subsequently, this study investigated the applicability of geomagnetic field as a positioning source by establishing the positioning system of Fingerprint method. In performance evaluation of the positioning system, the geomagnetic strength-based positioning system was similar to or approximately 20 percent higher than the wireless LAN-based positioning system in the buildings with the existing wireless LAN. Thus, in the environment without infrastructure for indoor positioning, the geomagnetic, an independent earth resource, can make it possible to realize the indoor positioning.

• Korean Journal of Family Social Work
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• no.55
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• pp.157-188
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• 2017

The purpose of this study was to examine the effects of self-care activities on physical and mental health of primary caregivers of functionally impaired elderly. Data were collected from 185 primary caregivers who were caring for their spouses or parents with functional impairment at home in Daejon. SPSS 21.0 software was used for descriptive analysis and hierarchical regression analysis. The results showed that (1) primary caregivers reported their physical health status as poor (2) the domains of health responsibility, physical activity in their self-care activities were significant predictors of their physical health level (3) primary caregivers reported very high level of depression (4) their mental health was significantly influenced by spiritual growth among self-care activities. Based on these findings, social work intervention and policy suggestions were discussed.

• Journal of the Korea Convergence Society
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• v.10 no.4
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• pp.219-227
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• 2019

The purpose of this study was to analyze relations among the stages of exercise change, exercise self-schema, and temptation of quitting exercise to figure out changes to the exercise behavior according to a psychological process. For this purpose, the study used total 297 questionnaires from adults using a public sports center. Collected data was treated with the SPSS 18.0 program, being put to the test through exploratory factor analysis, MANOVA, multiple regression analysis, and discriminant analysis. The findings were as follows: first, there were differences in exercise self-schema according to the stages of exercise change; second, there were differences in the temptation of quitting exercise between coaches and burnout according to the stages of exercise change; third, behavioral self-schema and burnout were major factors to distinguish the stages of exercise change; and finally, exercise self-schema had negative effects on burnout, and cognitive-emotional self-schema had negative effects on affect.

• Journal of Industrial Convergence
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• v.20 no.2
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• pp.21-27
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• 2022

Purpose: The purpose of this study is to investigate the structural relationship between self-directed learning, online class environment, and learning satisfaction of general high school students. 219 12th grade students in Sejong B High School responded to the survey questionnaire. For data analysis, correlation analysis and structural equation models were implemented. Results are as follows. First, there was a moderate or higher correlation between self-directed learning, online class environment, and learning satisfaction. Second, the model fit of the structural model among variables was good. Self-directed learning had an effect on the online class environment, and the online class environment had a positive effect on learning satisfaction. However, self-directed learning had no statistically significant effect on learning satisfaction. The researcher found the implication that learners' online class satisfaction showed a synergistic effect when students' self-directed learning ability and educators' excellent class environment are created. Also, the researcher proposed to analyze online learning satisfaction by comprehensively considering the individual, family, and school factors of various learners.

• Korean Journal of Culture and Social Issue
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• v.24 no.4
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• pp.637-655
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• 2018

The purpose of this study was to examine the mediating effects of paranoid tendency and social isolation in relationship between covert narcissism and Tajin Kyofusho(TKS). We administered self-report questionnaires to 334(163 male, 171 female) undergraduate students. Path analysis conducted using structural equation modeling. Path analysis indicated that the overall model fitted the data well. Analysis showed that paranoid tendency and social isolation sequentially mediated relationship between covert narcissism and TKS. The finding suggest that we could focus on covert narcissistic personality, paranoid cognitive process, and behavioral social isolation to understand and intervene TKS.

• Korean Journal of Culture and Social Issue
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• v.14 no.1_spc
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• pp.111-134
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• 2008

In this article, a fairly extensive literature review was conducted to depict the current status of academic motivation and its developmental trend among Korean adolescents. The focal factors were perceived competence and autonomy which have been considered as major determinants of academic motivation. Theoretical frameworks adopted were self-efficacy theory, expectancy-value theory, and self-determination theory. Empirical studies conducted in Korean educational settings during the past decade were the target of the literature review. Results of the literature analysis revealed that, in general, there was a decreasing tendency in perceived competence from elementary to middle school which followed by a slight increase after entering high school. Similar trend revealed in the development of autonomous motivation, in that middle and high school students' intrinsic motivation levels were lower than that of the elementary groups. The amotivational tendency was increased as the grade level proceeded toward high school, which requires attention from educators. Discussion was followed in an attempt to provide plausible interpretations for this undesirable current status of Korean adolescents' academic motivation and to suggest implications for possible remedial actions both in pedagogical perspectives and students' well-being.

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.885-896
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• 2023

This study attempted to identify the relationship between nursing students' adjustment to college life, stress, and major satisfaction, and to identify the factors that affect career decision-making self-efficacy. The study included 298 nursing students from two universities in the region, and data collection was conducted from April 24 to May 9, 2023. Results, It showed a significant negative correlation between college adjustment and stress, and it was found that there was a significant positive correlation between major satisfaction and career decision-making self-efficacy. Major satisfaction was the predictor variable that had the greatest impact on career decision-making self-efficacy, and the explanatory power was found to be 44.8%. This shows that nursing students with high self-efficacy are satisfied with their majors and adapt well to university life if they choose nursing studies. Therefore, there is a need to develop various career exploration and career education programs to enhance career decision-making self-efficacy.

• Journal of KIISE:Computer Systems and Theory
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• v.27 no.2
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• pp.117-122
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• 2000

The fractal image compression is based on the self-similarity that some area in an image is very similar to others. This compression method offers high compression ratio and fast decompression, but it has very long encoding time. To cut-off the encoding time, most researches give a restriction on domain blocks to be compared with a range block or make an effective search sequence of the domain blocks for a range block. However, most of them take much encoding time yet. In this research, we propose an algorithm that greatly reduces the encoding time by considering the coherence between range blocks. This algorithm first classifies all range blocks into some groups using the coherence between range blocks, and then searches corresponding domain blocks only for the key block of each group. If this scheme is joined in a prior work of the other fractal compression algorithm, it will give a great effectiveness to encoding time.

• The KIPS Transactions:PartB
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• v.16B no.5
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• pp.411-426
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• 2009

Most of the metaheuristics are made by imitating the action of the animals. In this paper, we proposed Mine Algorithm. The Mine Algorithm is a metaheuristic that imitates the action of the human being. Speaking of search, the field in which the know-how and the heuristics of the human being are melted best is the mining industry. In the Mine Algorithm we formalize the action pattern of the human being by focusing the mine business. The Mine Algorithm uses various searching techniques fluently and shows equally good performance for broad problems. That is, it has good generality. We show the improved generality of the Mine Algorithm by the comparing experiments with the conventional metaheuristics.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.685-687
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• 1999

기존 교수 연수체제는 전이 효과가 떨어지며 교사의 업무에 지장을 초래하게 된다. 이에 선정된 컴퓨터교육내용을 원격교육체제로 전환하여 기존 교사 연수의 단점을 극복하여, 효율성을 기할 수 있다. 컴퓨터교육내용을 원격 교육체제로 구축함에 있어서 다양한 원격교육매체의 특징과 가능한 학습 활동, 컴퓨터교육 내용의 특징에 따라서 원격 컴퓨터교육의 모형을 탐색하여 보았다. 그 모형은 자기주도적 학습활동에 기반한 코스웨어 모형, 토의 학습활동에 기반한 토의학습 모형, 대체 학습모형으로 일체학습 모형, 원격 교육의 모든 매체를 활용할 수 있는 문제결학습모형으로 분류하여 제시하여 보았다.