• NICE (News & Information for Chemical Engineers)
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• 제36권5호
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• pp.544-549
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• 2018

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2013년도 제47차 동계학술대회논문집 21권1호
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• pp.9-12
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• 2013

리눅스 기반 안드로이드 단말에서는 CFS(Completely Fair scheduler)가 사용되고 있다. 그리고 CFS는 태스크의 nice값 조절을 통해서 응용프로그램의 CPU 점유율을 제어할 수 있다. 하지만 안드로이드를 업그레이드할 때마다 수많은 태스크의 nice값을 적절하게 맞추는 일은 매우 어려운 일이다. 이러한 문제를 해결하기 위하여 안드로이드 단말은 리눅스의 cgroup(control group)을 사용하여 태스크들을 그룹으로 나눈다. 고성능과 빠른 응답 특성이 필요한 태스크들을 apps 그룹에 할당하여 높은 CPU 점유율을 보장하고, 그렇지 않은 태스크들을 background 그룹에 할당한다. 하지만 안드로이드의 버전이 업그레이드 되면서 각 그룹에 속한 태스크들에도 변화가 생긴다. 그 결과 동일하게 제작된 태스크들의 CPU 점유율이 달라지게 되고 예기치 못한 성능 저하가 발생할 수 있다. 본 연구에서는 안드로이드 버전 향상에 따라 동종 태스크들이 이전 버전에서보다 성능이 하락하는 현상의 원인을 파악하였다. 아울러 분석과 실험을 통하여 태스크의 nice 값보다 그룹 스케줄링 메커니즘이 어떻게 태스크의 CPU 점유율을 결정 짓는지 규명하였다.

• 공학교육연구
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• 제20권6호
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• pp.68-75
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• 2017

This study has a purpose to analyse changes in perception and image about engineering and technology of students who participated in the engineering camp. To achieve this objective, the questions were as follows. 1) What about participants' image difference for engineering before and after participating the engineering camp 2) What about participants' image difference for technology before and after participating the engineering camp. For this study, the program was progressed from Aug in 2017 and the data was collected from 88 students, middle school seniors and high school freshmen. The results of this study were as follows: First, secondary students perceived 'valuable(6.74)', 'meaningful(6.73)', 'rich(6.40)', 'collaborative(6.42)', 'nice(6.22)' as high image rank of the positive response for engineering. On the other hand, 'complex(3.59)', 'labored(3.80)', 'hard(4.66)', 'dangerous(4.48)', 'cold(4.86)' were perceived as low image rank of the negative response for engineering. We can realize that they generally has the image that engineering is valuable, meaningful and nice but also labored, complex and hard. The students who participated in the engineering camp showed the greatest difference in 'complex - simple' and 'dangerous - safe' engineering categories before and after the camp, followed by 'cold - hot', 'labored - easy', and 'hard - soft', respectively. Second, secondary students perceived 'meaningful(6.58)', 'valuable(6.55)', 'wide(6.38)', 'nice(6.37)', 'strong(6.25)' as high image rank of the positive response for technology. On the other hand, 'complex(3.85)', 'labored(3.93)', 'hard(4.62)', 'dangerous(4.72)', 'cold(5.05)' were perceived as low image rank of the negative response for technology. The students who participated in the engineering camp had the big change in 'hard - soft' technology category before and after the camp, followed by 'complex - simple', 'labored - easy', 'theoretical - practical' and 'dangerous - safe', respectively. We can see that the negative images for technology which were complex, labored, dangerous, theoretical was improved with positive image such as simple, easy, safe and practical, after conducting the engineering camp. In conclusion, both image recognitions for engineering and technology have improved after the camp. It means that interesting and entertaining engineering-technology program can boost interests in engineering and technology which felt difficult, so that images about them can be turned out positive. Also, it is possible to reduce avoidance of natural science and engineering subjects, as part of the purpose of training creative talents in science and engineering, so it can be said that the engineering camp is highly meaningful because it can lead students into the field of science and engineering.

• 한국인터넷방송통신학회논문지
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• 제23권2호
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• pp.37-50
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• 2023

본 연구에서는 다이어트 리얼리티 프로그램 시청행위(단순시청과 사회적 시청)가 시청자의 심리(지각된 현실감, 지각된 동질성, 동일화 갈망)와 시청효과(시청 만족도)에 미치는 영향을 살펴보았다. 2019년에 중국에서 큰 인기를 끌었던 다이어트 리얼리티 프로그램 <오, 좋은 몸매;애아호신재(哎呀好身材)> 시청 경험이 있으며, 다이어트 경험이 있는 여성 시청자들을 대상으로 온라인 설문 조사를 진행하였으며, 201명의 데이터가 최종 분석에 사용되었다. 인구통계학적 질문을 통해 시청자의 나이, 월 소득, 직업, 학력, 신체질량 지수, 그리고 다이어트 경험을 통제변인으로 설정하였고, SPSS 20.0을 사용하였다. 연구 결과, 단순시청과 사회적 시청 모두 시청자의 심리에 긍정적인 영향을 미치는 것으로 나타났다. 그러나, 단순시청과 사회적 시청이 시청 만족도에 직접적인 영향을 미치지 않는 것을 확인하였다. 마지막으로, 단순시청과 시청 만족도 간의 관계와 사회적 시청과 시청 만족도 간의 관계를 시청자의 심리적 변인의 매개효과를 검증하였다. 이러한 연구 결과는 다이어트 리얼리티 프로그램 시청자의 시청행위로서의 단순시청과 사회적 시청, 그리고 시청자의 심리가 시청 만족도에 미치는 영향을 이해하는 데 함의가 있다.

• 영어어문교육
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• 제1호
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• pp.189-211
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• 1995

Dream Girl. which was written to entertain. reflects his concern of psychoanalysis. The play does indeed glow with the happiness surrounding its creation and it is a theatrically astute. deftly crafted comedy. If it has a thesis, it is that one should live one's life and not dream away. Some critics say that Dream Girl is the merriest and the other critics bewail the lack of message. But this play does amuse many people and is a nice fusion of realism, expressionism, and entertainment.

• Communications for Statistical Applications and Methods
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• 제9권3호
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• pp.665-674
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• 2002

The advantage of internet survey compared to the traditional survey methods are speedy in data collection, cost-effective, high performed design and able to data process and analysis at the same time. The other side are difficult to select sample, come from serious nonresponse errors. We suggest the new internet survey method to the questionnaire design that have the high response rate, enough to advanced preparations and system stability.

• Communications for Statistical Applications and Methods
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• 제12권3호
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• pp.653-657
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• 2005

Eigenstructure of a spatial design matrix of Matheron's variogram estimator in $R^1$ is derived. It is shown that the spatial design matrix in $R^1$ with n/2$\le$h < n has a nice spectral decomposition. The mean, variance, and covariance of this estimator are obtained using the eigenvalues of a spatial design matrix. We also found that the lower bound and the upper bound of the normalized Matheron's variogram estimator.

• Communications for Statistical Applications and Methods
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• 제3권3호
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• pp.179-186
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• 1996

Bioequivanence models arise typically in bioassays when new preparations are compared against standard ones by means of responses on some biological organisms. Relative potency measures provide nice interpretations for such bioequivalence and their estimation constitutes the prime interest of such studies. A conditional quantile process based on the k-nearest neighbor method is proposed for this purpose. An alternative procedure based on Kolmogrov-Smirnov type estimator has also been considered along with. ARIC ultrasound data are analyzed as examples.

• Korean Journal of Mathematics
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• 제22권3호
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• pp.501-516
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• 2014

We define the class of almost ${\omega}_1-p^{\omega+n}$-projective abelian p-primary groups and investigate their basic properties. The established results extend classical achievements due to Hill (Comment. Math. Univ. Carol., 1995), Hill-Ullery (Czech. Math. J., 1996) and Keef (J. Alg. Numb. Th. Acad., 2010).

• Korean Journal of Mathematics
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• 제25권2호
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• pp.229-246
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• 2017

This paper concerns barrier option of American type where the underlying price is monitored during only part of the option's life. Analytic valuation formulas of the American partial barrier options are obtained by approximation method. This approximation method is based on barrier options along with exponential early exercise policies. This result is an extension of Jun and Ku [10] where the exercise policies are constant.