• 한국정보통신학회논문지
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• 제8권2호
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• pp.295-303
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• 2004

본 논문은 양방향 트래픽에서 비동기 전송모드 네트워크의 동적인 TCP 연결을 분석하고 트래픽 패턴을 프로토콜 상에서 네트워크 경로를 통해 개선됨을 연구한다. RTP(Round Trip Delay time)가 결정한 피드백루프의 시간 한계를 초과하는 정보의 형태로 조정하는 LTS 제어 모듈과 TCP를 연계시키는 방법에서 정보를 개연적인 특성을 갖고 여러 시간대에 걸처 분산하는 기존 윈도우를 기반으로 시연하기 때문이다. 이를 효과적으로 활용할 수 있는 방법으로 개선하며 TCP의 성능에서 자기 유사성 트래픽의 물리적 모델링에 기반한 시뮬레이션을 벤치마크 환경을 통해 수행한다. 본 논문은 양방향 네트워크에서 자기 유사성 트래픽 조건으로 스텍의 전송 프로토콜 변화의 영향을 파악 및 평가하는 방법론을 활용하고 과중한 조건에 자기유사성에 의해 경로 트래픽 혼잡제어 개선을 나타낸다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제28권2호
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• pp.255-279
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• 2014

본 연구는 오답원인 자기평가와 유사 문제에 관련된 선행 연구를 바탕으로, 학생들이 자신의 학습 과정을 반성할 수 있는 하나의 방안으로 오답원인 자기평가를 실시하고 유사한 문제들을 해결하는 과정을 통해 학생들의 인지적, 정의적 영역의 변화를 살펴보고자 한다. 이를 위하여, 본 연구에서는 고등학교 1학년에 재학 중인 네 명의 학생들을 대상으로 근원 문항 3개를 제시하고 각각에 대한 유사 문항들을 유형별로 제시하여 오답원인 자기평가를 작성하게 하고, 이와 더불어 사전 면담과 사후 면담, 그리고 두 차례의 비공식 면담을 실시하였다. 한 마디로, 본 연구에서는 연구 대상자들로 하여금 오답원인 자기평가지를 이용하여 유사 문항들을 해결하고 오류 원인을 점검하는 반성 활동을 거치면서 자신의 문제점을 스스로 판단하며 문제 풀이 과정의 변화와 수학 학습 태도의 변화를 살펴보고자 한다.

• 한국과학교육학회지
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• 제27권3호
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• pp.201-211
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• 2007

이 연구에서는 TIMSS 학생 설문 자료 중에서 과학에 대한 자신감, 과학 학습에 대한 흥미, 과학 학습 동기, 과학 관련 진로 희망에 관련된 문항을 분석하여 우리나라 중학생의 과학에 대한 태도 추이 및 태도에서의 생차를 알아보았고, 우리나라 학생의 과학에 대한 태도를 싱가포르, 대만, 홍콩, 일본 중학생들과 비교하여 그 특정을 파악하였다. 우리나라 중학교 2학년 학생의 과학 학습에 대한 흥미와 과학 학습에 대한 외적 동기는 TIMSS 1999에서 감소하였다가 2003에서 다시 증가하는 것으로 나타났으며, 특히 과학 학습에 대한 흥미의 경우 그 하락 및 상승폭이 상대적으로 컸다. 반면에 과학에 대해 자신감을 가진 학생과 과학 관련 직업을 희망히는 학생의 비율은 지속적으로 감소하는 추세를 보이는 것으로 나타났다. 과학에 대한 자신감의 경우, 1995와 1999에서는 남녀 학생이 비슷한 양상을 보였으나 1999에서 2003으로 진행하면서 남학생의 자신감은 큰 변화가 없는 반면 여학생의 자신감은 큰 폭으로 하락하는 것으로 나타났다. 과학 학습에 대한 흥미 추이는 남녀가 비슷한 양상을 보였으며, TIMSS 1999에서 하락하였다가 TIMSS 2003에서 다시 상승하는 것으로 나타났다. 과학 학습 동기는 남녀 모두 상승하는 추세인 것으로 나타났으며, 특히 여학생의 경우 상승폭이 컸다. 과학 관련 직업을 희망하는 학생의 비율은 남학생의 경우에는 지속적으로 감소하고 있는 반면, 여학생의 경우에는 TIMSS 1999에서 감소하였다가 TIMSS 2003에서 다시 약간 상승하는 것으로 나타났다. 성취도가 높고 교육에 대한 사회적 가치나 문화적 배경이 유사한 싱가포르, 대만, 홍콩, 일본 등 아시아 4개 국가와 비교한 결과, 우리나라는 과학에 대한 자신감, 과학과 관련된 진로 희망, 과학 학습에 대한 흥미가 가장 낮은 국가인 것으로 나타났다.

• 대한수학회논문집
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• 제13권2호
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• pp.281-287
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• 1998

We define a new form of fractals, called the braked subsimilar set from a self similar set and find the relation between their fractal dimensions.

• 가정과삶의질연구
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• 제25권2호
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• pp.71-87
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• 2007

It is necessary to understand a self-expression and communication in cyberspace using digital photography We have studied the digital camera consumer's self-expression and communication skills and strategy through ethnographic interviews. In this study, we have used ethnographic interviews of 7 informants who had personal web site and are using digital cameras. As a result, It has turned out that informants expressed their self taking pictures of their daily life, friends, and family. Also they imply meaning and feeling in the pictures that had been taken to express their lives. The communication in cyberspace has turned out that informants communicate with other people with digital pictures to show their life. They communicated each other and give information. It means that they made information by themselves to give and share with other people as prosumer. Digital photography to express themselves and communicate in cyberspace enhanced human relationship that had made in cyber space. And it helps to form their self identity. They express their cyber identity with digital photography and it is similar to their self identity that expresses in real life.

• 한국간호교육학회지
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• 제21권4호
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• pp.509-517
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• 2015

Purpose: This study examined diabetes knowledge, self-efficacy, and health promoting behaviors, and investigated factors affecting health-promoting behaviors of middle-aged people. Methods: From August to September 2014, a convenience sample of 264 subjects was recruited from B city and G province. The data analysis was done by ${\chi}^2$ test, t-test, Pearson's correlation coefficient, and stepwise multiple regression. Results: Diabetes knowledge was $11.3{\pm}3.63$ in men and $12.7{\pm}3.74$ in women. The average levels of self-efficacy and health promoting behaviors of subjects were similar with other middle-aged individuals. Diabetes knowledge, self-efficacy, and health promoting behaviors had a positive correlation with each other in both men and women. To test the mediating effect of self-efficacy in the relationship between diabetes knowledge and health promoting behaviors, a Sobel test was performed and Z-scores of 3.698(p<.001) in men and 2.748(p=.006) in women were obtained. Conclusion: Diabetes prevention education is recommended for the middle-aged community. When developing diabetes prevention program for middle-aged people, such programs should consider self-efficacy, especially in women.

• Human Ecology Research
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• 제53권2호
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• pp.209-218
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• 2015

This study provides a basis for the development of lesson plans and teaching programs associated with the appearance in the adaptation of interpersonal relationships. This study was analyzed adolescents' body comparison and body satisfaction related in the adaptation of interpersonal relationships, and the effectiveness of self-esteem mediation. The survey was conducted among 587 adolescents in Gwangju. The data was analyzed using SPSS ver. 19.0 for Windows: frequency, means, factor analysis, Cronbach's ${\alpha}$, t-test, analysis of variance, Pearson correlation analysis, and regression analysis. The results indicated that body comparison and body satisfaction effected the adaptation of interpersonal relationships among adolescents consequently, it is necessary to develop lesson plans and teaching programs related to awareness, and improve appearance. A body comparison with similar aged people did not affect self-esteem; however, it is necessary to improve body satisfaction because it affects self-esteem. Self-esteem was also the mediating role between the adaptation of body satisfaction and interpersonal relationships, sub-factors, adaptation of relationships with friends, adaptation of relationship with teachers, adaptation of relationships with parents. It is important that body satisfaction and self-esteem is key factor in planning training programs, and improving the capacity of adolescents adaptation of interpersonal relationships.

• Progress in Superconductivity
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• 제1권1호
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• pp.68-72
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• 1999

Since the discovery of high Tc superconductors, great efforts have been focused to develop high performance HTS magnets for the ultimate applications to power system devices. Magnet designers, however, have had difficulties in the estimation of the maximum operating current of the designed magnet from the tested short sample data, due to the degradation of the critical current density in the magnet. Similar story applies to the HTS electrical bus bar. It has been found that the critical current of Bi-2223 stacked tapes is much less than the total summation of critical currents of each tape, which is mainly attributed to the self magnetic fields. Furthermore, since the critical current degradation of Bi-2223 tape is greater in the normal magnetic field (to the tape surface) than in the parallel one, detailed magnetic field configurations are required to reduce the self field effects. In this paper, we calculate the self field effects of a stacked conductor, defining self field factors of normal and parallel magnetic fields to the tape surface. Finally, the critical current degradations in the HTS magnet are explained by the introduced self field factors of the stacked conductor.

• International Journal of Advanced Culture Technology
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• 제6권1호
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• pp.8-14
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• 2018

Meta-cognition is the knowledge and cognition of cognitive phenomena, including the control of ones own memory, comprehension, and thought processes. Meta-cognition is similar to self-awareness, which is the understanding of oneself, and affects people's attitudes and behaviors. This study demonstrated the mediating effect of meta-cognition between internal locus of control and self-efficacy. Internal locus of control refers to the steady faith that any outcome is related to one's own efforts. Self-efficacy is a collection of personal strong belief that one individual can achieve his or her own goals. In this study, if a person has a tendency to adopt an internal locus of control, meta-cognition is improved, and self-efficacy can in turn be increased if meta-cognition is improved. This study conducted an empirical analysis through questionnaires conducted on 260 university students. The results of the research demonstrated that there is a highly positive correlation between meta-cognition, control position, and self-efficacy. In addition, this study emphasized that positive meta-cognition with internal locus of control can lead to positive attitudes and behaviors, and positive results.

• Journal of Korean Biological Nursing Science
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• 제14권3호
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• pp.203-211
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• 2012

Purpose: The purpose of this study was to investigate effects of obesity on self-rated health in Korean males and females. Methods: The 2010 Korean National Health and Nutrition Examination Survey (KNHANES V-1) data were used. Participants included 1,231 males and 1,289 females aged 20 years or older and had no disease. Chi-square test, t-test, and multiple logistic regression with dummy variables using SAS 9.2 were performed. Results: From univariate analysis, total body fat was significantly greater in males with a self-perception of poor health (p=.006), and the percentage of total body fat was significantly greater in males and females with a self-perception of poor health (p for all=.001). After controlling for demographic and health behavior variables, similar results were found. Females with higher education had a healthy perception of their health. Smoking for males and drinking for females were significantly related to unhealthy perception of their health. Conclusion: The current study provides evidence that obese Korean males and females had worse self-rated health, even though they had no disease. In particular, it is important to note that the relatively direct obesity measures from Dual Energy X-Ray Absorptiometry, such as total body fat and percentage of body fat, were significantly related to self-rated health.