• 한국산업정보학회논문지
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• 제18권2호
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• pp.27-34
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• 2013

대용량의 NAND 플래시 메모리가 출시됨으로써, 다양한 용도로 사용이 가능해 졌다. 특히 모바일기기의 멀티미디어 기능 확장으로 인해 대용량 NAND 플래시 메모리의 수요가 증가하고 있다. YAFFS2, NILFS2, JFFS2 파일시스템은 NAND 플래시 메모리 전용 파일시스템이다. 본 논문에서는 각 3개의 파일시스템에 4개의 I/O scheduler : CFQ(Complete Fair Queuing) I/O scheduler, NOOP(No Operation) I/O scheduler, Anticipatory I/O scheduler, Deadline I/O scheduler에 대한 순차적인 읽기, 쓰기 성능을 분석하였다. JFFS2 파일시스템 상에서의 Anticipatory I/O scheduler가 다른 I/O scheduler보다 쓰기 8%, 읽기 1.5% 이상 시간이 단축되었다. YAFFS2 파일시스템상에서는 4개의 I/O scheduler 시간이 일정하다. NILFS2 파일시스템에서는 Deadline I/O scheduler가 다른 I/O scheduler보다 쓰기 2%, NOOP I/O scheduler가 읽기 6%정도 시간이 단축 된다.

• 가정과삶의질연구
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• 제29권6호
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• pp.71-87
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• 2011

The purpose of this study was to investigate perceptions of the self-efficacy of youth (self-confidence, self-regulatory efficacy, and task difficulty preference) and the subjective quality of life. The participants in this research were 697 university students 314 males and 383 females. All respondents submitted their answers on a self-report questionnaire. The data were analyzed with descriptive statistics, t-tests, Pearson's correlations, and multiple regression analyses. The major results of this study were as follows: (a) Young males exhibited higher levels of self-efficacy perception compared to young females. Regarding the subjective quality of life, gender was not a significant factor. (b) The subjective quality of life was highly correlated with the self-efficacy of youth (self-confidence, self-regulatory efficacy, and task difficulty preference). (c) Self-satisfaction, self-confidence regarding one's career, satisfaction with one's friends, satisfaction with one's parental relationship, quantity of reading, and the amount of study-time all had significant influences on the self-efficacy of youth, whereas the family's socioeconomic status and campus life satisfaction were not significant factors. (d) Self-efficacy had the strongest influence on the youth subjective quality of life. Self-satisfaction, campus life satisfaction, and satisfaction with friends all had significant influences on the youth subjective quality of life, whereas the quantity of reading, the amount of study-time, self-confidence with one's career, the family's socioeconomic status, and satisfaction with one's parental relationship were not significant factors. However, self-confidence with one's career, satisfaction with one's parental relationship, the family's socioeconomic status, and quantity of reading all had different levels of influence on the subjective quality of life for young males and females.

• 영어영문학
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• 제57권1호
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• pp.27-49
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• 2011

This article proposes to stay away from contemporary critical arguments concerning Michael's value system, which is construed mainly from his choice between his patrimonial lands and his son Luke. Presuming that Michael's value system as have been argued so far could never be the poet Wordsworth's own concern at the time of the composition of the poem "Michael," this article proposes to get back to the all too real socio-historical situation of the early nineteenth-century England. Mere consideration of the socio-historical situation, when combined with a close reading of the poetic text (a close reading of both the poetic story and the poetic history from which the story may be said to have been constructed), directs us to the poet working on the simple paradigm of 'the country and the city at war with each other' but the victory having been given to the city already. The guarantee contract for a supposedly prospering nephew's debt and the letter from another prospering relative in London are undoubtedly the key elements that lead us to the war paradigm. Michael's family members, each and all including Michael himself, and all of their village people, have been imbued with the city's commercial values, which renders them all the more easier victims within the war context. Luke's defeat in the city is viewed as being really the consequence, rather than the cause, of Michael's defeat, which became apparent as soon as the news of the latter's financial disaster reached his ear. Michael should therefore be regarded as one of the typical English countryfolk of the time, with whom Wordsworth often, but not always, identifies himself. Insofar as the economic view or attitude is concerned, there certainly is a distance between Michael and Wordsworth, this article argues.

• 한국산업융합학회 논문집
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• 제27권2_2호
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• pp.437-443
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• 2024

The purpose of radiological Dispersal Device(RDD) is to kill people by explosives and to cause radiation exposure by dispersing radioactive materials. And It is a form of explosive that combines radioactive materials such as Co-60 and Ir-192 with improvised explosives. In this study, we tested and evaluated whether it was possible to read the internal structure of an explosive using X-rays in a radioactive explosive situation. The improvised explosive device was manufactured using 2 lb of model TNT explosives, one practice detonator, one 9V battery, and a timer switch in a leather briefcase measuring 41×35×10 cm³. The radioactive material used was the Co-60 source used in the low-level gamma ray irradiation device operated at the Advanced Radiation Research Institute of the Korea Atomic Energy Research Institute. The radiation dose used was gamma ray energy of 1.17 MeV and 1.33 MeV from a Co-60 source of 2208 Ci. The dose rates are divided into 0.5, 1, 2, and 4 Gy/h, and the exposure time was divided into 1, 3, 5, and 10 minutes. Co-60 source was mixed with the manufactured explosive and X-ray image reading was performed. As a result of the experiment, the X-ray image appeared black in all conditions divided by dose rate and time, and it was impossible to confirm the internal structure of the explosive. This is because γ-rays emitted from radioactive explosives have higher energy and stronger penetrating power than X-rays, so it is believed that imaging using X-rays is limited By blackening the film. The results of this study are expected to be used as basic data for research and development of X-ray imaging that can read the internal structure of explosives in radioactive explosive situations.

• 디지털콘텐츠학회 논문지
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• 제12권2호
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• pp.253-262
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• 2011

비장애인에게 IT 기술은 단순히 하나의 제품에 지나지 않을지 모르지만, 장애인에게는 비장애인과 동일한 사회 활동을 가능케 해주는 '또 다른 감각'이 될 수 있다. 장애인의 정보 접근을 돕기 위해서는 도서관의 장애인서비스가 필수적인데, 장애인을 위한 도서관 서비스는 그 규모와 수준에 따라 실효성이 결정된다. 이에 본 연구는 국내 인구의 10%에 달하는 독서장애인의 독서활동 및 정보 접근을 돕는 국내외 기술과 응용력의 현주소에 대해 알아본다. 문헌조사 및 국내외 도서관 탐방을 통해 독서장애인 지원 기술 및 서비스 현황을 살펴보고, 그에 따른 분석을 토대로 국내 실정에 맞는 발전방안을 제시한다. 이를 통해 독서장애인의 정보접근지원에 있어 국내 도서관에서 제공할 수 있는 서비스와 독서지원 보조공학 기술 관련 장기적 발전전략을 제안하였다.

• 한국과학교육학회지
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• 제24권2호
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• pp.234-240
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• 2004

이 연구의 목적은 고등학생들의 과학철학적 관점을 조사하고, 해석적인 서술방식의 과학 읽기 자료가 고등학생들의 과학철학적 관점에 영향을 미치는가를 조사하는 것이다. 대전광역시의 일반계 고등학교 여학생 4개 학급을 2개 학급씩 각각 실험, 통제 집단으로 선정하였다. 기존의 교과서에 나타난 확정적인 서술방식과는 다른 해석적인 서술방식의 과학 읽기 자료를 12주 36차시 분량을 개발했다. 과학 읽기 자료는 매 시간 10분에 걸쳐 투입되었으며, 자료의 이해를 돕기 위해 2개의 질문에 응답하도록 하였다. 과학철학적 관점을 검사하는 도구로는 PPP (Philosophic외 Perspectives Prove)를 이용하였다. 고등학생들의 과학철학적 관점은 귀납주의적으로 편중되어 있었으며, 해석적인 서술방식으로 개발된 36차시 분량의 과학 읽기 자료를 학생들에게 처치한 결과, 학생들의 편중된 귀납주의적인 과학철학적 관점을 변화시키는 데 효과가 있었다. 또한 24차시를 처치한 선행연구에서 변화된 관점이 어느 정도 회귀되었던 것과는 다르게 변화된 관점이 지속되었다.

• 터널과지하공간
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• 제22권3호
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• pp.214-220
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• 2012

터널 굴착에 의해 발생되는 주변 지반의 변위는 터널의 안정성 평가를 위해 중요한 정보가 된다. 실제 시공중 계측에 의해 획득되어 지는 변위량은 불가피하게 계측전 발생한 변위를 포함하지 못하게 된다. 따라서, 계측이 이루어진 시점을 고려하여 계측전 발생한 변위량을 예측하는 것은 매우 중요하다. 본 연구에서는 초기 계측이 이루어진 시점에 따라 계측전 변위 예측의 정확도를 굴착면과 계측지점의 이격거리만을 고려하여 통계적 기법으로 고찰하였다. 또한, 계측 오차가 변위 예측결과에 미치는 영향을 몬테카를로 시뮬레이션을 통하여 살펴보았다. 연구결과 초기 계측이 이루어진 이격거리가 커질수록 전체 변위 이력곡선의 예측 정확도는 급격히 감소하였으며, 계측오차가 커질수록 예측 정확도가 낮아지는 경향을 확인하였다.

• 한국도서관정보학회지
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• 제45권4호
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• pp.139-164
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• 2014

이 연구는 학교도서관 관련 연구학교 보고서를 분석하여 학교도서관 활용교육의 특징과 문제점을 식별하고 개선방안을 논의하는 것을 목적으로 하였다. 에듀넷의 연구학교 사이트에 탑재된 중 고등학교 보고서 23편을 내용분석하여 각 학교가 수행한 도서관활용교육의 실천내용을 13가지로 분류하였다. 가장 많이 실시한 활동은 장서확충, 독서행사, 도서관활용수업(LAI), DLS 활용이었으며, 학습동기 유발에서부터 자기주도적 학습능력 증진에 이르기까지 교육목표로 추구하는 다양한 효과를 창출하였다. 그러나 도서관활용수업이 DLS를 사용한 독서활동에 지나치게 의존하고 있으며, 시간과 자료의 부족으로 정보탐색활동은 거의 이루어지지 않고 있다는 문제점이 있다. 도서관활용수업이 추구하는 자기주도적 학습능력을 함양하기 위해서는 도서관의 정보활동을 통하여 어떤 교육경험을 어떤 방법으로 제공할 것인가에 대해 교육과정과 연계하여 더 치밀하게 계획할 필요가 있다.

• 한국가구학회지
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• 제27권2호
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• pp.111-121
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• 2016

In the structure of modern houses, a living room is the space most frequently used by family members. In a living room, they rest, talk together, watch TV, study, read books and enjoy hobbies. A living room is furnished with a TV cabinet, a storage closet, a sofa, a bookshelf, a desk and etc. depending on the purposes of activities in it, which can be different in each house. Furniture is the required tool for indoor architectural space and humans to lead a life. In most families, a man and a woman marry each other and become man and wife, go through the honeymoon phase, give birth to one or two children and become a family with three or four members. According to the children's growth cycle from birth to infancy, early childhood, childhood, adolescence, youth and adulthood, furniture layout and kinds of furniture in a living room change. Depending on the family life cycle, most parents of young children try to help their children to form good habits of reading books and studying for their future. As for the environmental elements interrupting reading and studying, watching TV and using smart phones excessively are being regarded as problems. As the number of two-income families is increasing in this era when many women are participating in the social activities with the government's encouragement, children are having more time.

• 한국어교육
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• 제28권3호
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• pp.53-83
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• 2017

The goal of this study is to examine whether the genre characteristics of newspaper articles are appropriately reflected in Korean language textbooks. For the purpose of this study, two corpora were built with 17 textbook articles and 60 newspaper articles respectively. The average sentence length and frequency of vocabulary in each corpus were measured. It was found that the sentences of articles in textbooks tended to have longer sentence length and more complicated structures than the articles in newspapers. For instance, sentences in the textbook articles had more verbal endings, such as conjunctive and transforming endings. On the other hand, in case of vocabulary representing 'timeliness', there was a high frequency of adverbs and nouns which were related to year, month, and time in actual articles, while it is found to be very limited in textbooks. Also, typical translative styles such as '-ko itta', '-e ttareumyun' were more prominent in textbooks than in newspaper articles. In the case of abbreviated and omitted form of particles, this was a characteristic that appeared only in actual articles because of the constraint of space. It is significant that this paper offers suggestions for the development of reading materials for Korean language education by revealing that the genre typology of actual newspaper articles is not adequately reflected in current textbooks.