• 대한임베디드공학회논문지
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• 제9권1호
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• pp.25-32
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• 2014

In this paper, we proposed a partial-way set associative cache memory with an effective memory access time and low energy consumption. In the proposed set-associative cache memory, it is allowed to access only a 2-ways among 4-way at a time. Choosing ways to be accessed is made dynamically via the least significant two bits of the tag. The chosen 2 ways are sequentially accessed by the way selection bits that indicate the most recently referred way. Therefore, each entry in the way has an additional bit, that is, the way selection bit. In addition, instead of the 4-way LRU or FIFO algorithm, we can utilize a simple 2-way replacement policy. Simulation results show that the energy*delay product can be reduced by about 78%, 14%, 39%, and 15% compared with a 4-way set associative cache, a sequential-way cache, a way-tracking cache, and a way cache respectively.

• 한국수학교육학회지시리즈A:수학교육
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• 제17권2호
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• pp.1-13
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• 1979

This study aimed at studying the sequence of the Figure Transformation Learning, inquiring relationship among these transformations and then researching whether there is the difference of the learning ability or not between by teaching them as it is independent and by teaching them as it is contains. (Hypothesis 1) It may be more effective to teach The Sequence of Transformation Learning by beginning with peculiar field, ending with general field than vice versa At the result of verification-C $R_{M}$=2.59, 0.005$R_{M}$=5.19, p<0.005-significant difference appeared. It is proved more effective to teach the Figure Transformation Learning the way it contains than the way it is independent. Synthesizing two hypothesises of the above, the conclusion is following The Figure Transformation Learning should be taught by beginning with peculiar field. ending with general field (congruent transformationlongrightarrowsimilar transformationlongrightarrowprojective transformationlongrightarrowtopological transformation). To teach it the way it contains is more effective.ive.

• Journal of Mechanical Science and Technology
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• 제20권7호
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• pp.941-949
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• 2006

Nonlinear behavior analysis was used to verify whether a one-way clutch is effective for reducing the torsional vibration of a paired spur gear system under periodic excitation. The dynamic responses were studied over a wide frequency range by speed sweeping to check the nonlinear behavior using numerical integration. The gear system with a one-way clutch showed typical nonlinear behavior. The oscillating component of the dynamic transmission error was reduced over the entire frequency range compared to a system without a one-way clutch. The one-way clutch also eliminated unsteady continuous jump phenomena over multiple solution bands, and prevented double-side contact, even with very small backlash. Installing a one-way clutch on both sides of the gear system was more effective at mitigating the negative effects of external periodic excitation and various parameter changes than a conventional gear system without a one-way clutch.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 추계학술발표회 논문집
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• pp.251-256
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• 2004

The image classification is one of the most important studies in the remote sensing. In general, the MLC(Maximum Likelihood Classification) classification that in consideration of distribution of training information is the most effective way but it produces a bad result when we apply it to actual hyperspectral image with the same classification technique. The purpose of this research is to reveal that which one is the most effective and suitable way of the classification algorithms iii the hyperspectral image classification. To confirm this matter, we apply the MLC classification algorithm which has distribution information and SAM(Spectral Angle Mapper), SFF(Spectral Feature Fitting) algorithm which use average information of the training class to both multispectral image and hyperspectral image. I conclude this result through quantitative and visual analysis using confusion matrix could confirm that SAM and SFF algorithm using of spectral pattern in vector domain is more effective way in the hyperspectral image classification than MLC which considered distribution.

• 대한기계학회논문집A
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• 제35권11호
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• pp.1477-1482
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• 2011

기어열의 입력축이나 출력축에 원웨이클러치를 설치하면 기어열의 진동을 효과적으로 감소 시킬 수 있다고 보고된 바 있으나, 아직까지 수치적 해석만이 행하여졌고 실험에 의한 검증이 이루어지지 않았다. 따라서 본 연구에서는 원웨이클러치를 가지는 기어열을 대상으로 동특성 실험을 수행하여, 원웨이클러치가 진동 감소에 효과적인지 여부의 타당성을 검증하였다. 클러치 설치 유무와 설치 위치에 따른 차이를 비교하기 위하여, 입력축과 출력축에 각각 클러치 설치 조건을 달리하면서 넓은 속도 범위에 걸쳐서 동특성을 측정 비교하였다. 실험 결과에 의해, 클러치가 기어물림 진동뿐만 아니라 입력축에서 전달되는 진동을 감소 시킴으로써, 기어열의 비틀림 진동 감소에 효과적임을 확인하였다.

• 한국문헌정보학회지
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• 제40권2호
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• pp.457-480
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• 2006

오픈 엑세스 학술지의 등장과 같은 학술 커뮤니케이션 변화에 따라 국내 학술지의 현황을 조사하고, 품질을 높이며, 유통을 활성화시키는 연구는 매우 중요하다. 본 연구는 의 생명 분야 국내 학술지의 구독, 소장, 이용, 인용 등 국제적 유통 활성화 방안의 제시를 목적으로 수행되었다. 이를 위해 3개 그룹 각 30종씩 모두 90종의 학술지를 대상으로 도출된 4개 국제적 유통 활성화 요인으로 구분하여 34개 세부 조사도구를 문헌과 홈페이지 및 데이터베이스를 이용하여 조사하였다. 연구결과 국내 학술지가 국제적 유통망에 진입하여 활성화되기 위해서는 국제적 수준의 학술지를 발행하고, 학술지의 국제적 존재 인식과 이용률을 제고하고, 학술지의 국제 구독률과 소장률을 향상시키고, 전자 원문의 신속하고 편리한 제공과 정보화 기술을 확보하도록 학술 커뮤니케이션 관계자가 모두 노력해야만 한다.

• Structural Engineering and Mechanics
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• 제67권2호
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• pp.155-163
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• 2018

The Early-age construction loading and changing properties of concrete, especially in the multi-story structures can affect the slab deflection, significantly. Based on previously conducted experiment on eight simply-supported one-way slabs this paper investigates the effect of concrete type, fiber type and content, loading value, cracking moment, ultimate moment and applied moment on the instantaneous deflection of Self-Compacting Concrete (SCC) slabs. Two distinct loading levels equal to 30% and 40% of the ultimate capacity of the slab section were applied on the slabs at the age of 14 days. A wide range of the existing models of the effective moment of inertia which are mainly developed for conventional concrete elements, were investigated. Comparison of the experimental deflection values with predictions of the existing models shows considerable differences between the recorded and estimated instantaneous deflection of SCC slabs. Calculated elastic deflection of slabs at the ages of 14 and 28 days were also compared with the experimental deflection of slabs. Based on sensitivity analysis of the effective parameters, a new model is proposed and verified to predict the effective moment of inertia in SCC slabs with and without fiber reinforcing under two different loading levels at the age of 14 days.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제5권1호
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• pp.57-69
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• 2001

A new initiative in the 7th curriculum of mathematics is the inclusion of spatial sense in geometry. The purpose of this study is threefold: a) to identify the concepts of spatial sense; b) to systematize the contents of spatial sense by analysis the curricular and texbooks; and c) to explore an effective way of teaching-leaning of spatial sense.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1496-1501
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• 2004

Recently, many Korean firms have been adopting 360$^{circ}$ Degree Feedback System with the environmental change in business world. The reason is that the traditional top-down way of personnel evaluation pattern can not but has many limits in this turbulent changing environment. The main purpose of this article is to depict some aspects of 360$^{circ}$ Degree Feedback System including its current status quo, its positive and negative side, and the effective way of its improvement focusing on A firm.

• 보건의료산업학회지
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• 제4권2호
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• pp.85-95
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• 2010

This study was to understand perception level and education need on hospice, and to development effective education contents of hospice for medical students. Descriptive survey research design was used. Participants were 426 and the data collecting period was from July. 22. to July. 29. in 2008. The data were analyzed using descriptive analysis, chi-square test, Wilcoxon's signed rank test. The participants experiencing in hospice education program demonstrated higher perception level and education need about hospice than non-participants. Also, The participants experiencing in hospice education showed more concerning on effective education contents of hospice than non-participants. Therefore, hospice education program must be prepared in a continual and systematic way in order to provide for effective education of medical students in Korea.