• 한국통계학회:학술대회논문집
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• 한국통계학회 2003년도 추계 학술발표회 논문집
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• pp.69-72
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• 2003

The paper considers partial least squares (PLS) as a new dimension reduction technique for the feature vector to overcome the small sample size problem in face recognition. Principal component analysis (PCA), a conventional dimension reduction method, selects the components with maximum variability, irrespective of the class information. So PCA does not necessarily extract features that are important for the discrimination of classes. PLS, on the other hand, constructs the components so that the correlation between the class variable and themselves is maximized. Therefore PLS components are more predictive than PCA components in classification. The experimental results on Manchester and ORL databases show that PLS is to be preferred over PCA when classification is the goal and dimension reduction is needed.

• 가정과삶의질연구
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• 제23권1호
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• pp.113-123
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• 2005

The purpose of this study was to examine the role performance and self-confidence of the fathers with children in grade school. Further, this study explored the variables that affect positively the self-confidence of the fathers. A survey questionnaire was used for this study. The participants of this study were 340 fathers with children aged between seven and nine residing in Gyeongsangnam-do. As for the performance of father's roles, the average score was higher in 'conversation with children' and 'expressing affection to children', whereas it was lower in 'raising children' and 'educating children'. As for the self-confidence regarding their father's roles, the score was higher in the cognitive dimension than in the emotional dimension. In general, the fathers tended to evaluate their role performance as fathers positively. The variables that affected the cognitive dimension of self-confidence as a father were conversation with children, supporter role, under-standing children, and educating children. The variables that influenced the emotional dimension, on the other hand, were child-rearing role, husband's role, supporter role, and expressing love to children.

• 지질공학
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• 제9권2호
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• pp.101-118
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• 1999

본 연구는 덕산온천내에 수행된 28개 양수시험자료를 종합하여 덕산온천의 수리적 특성 및 매개변수를 파악하였다. 프락탈 모델, 누수성 프락탈 모델 그리고 정상류의 이중공극 프락탈 모델을 이용한 양수시험분석 결과, 대체로 온천의 중심부에서는 1.9 또는 2.0의 유동차원을 보이며, 주변부에서는 1.5∼l.7의 유동차원을 보인다. 2.0차원의 경우에, 투수량계수와 대수층 손실에 의한 산출계수의 상관성이 총 수위강하를 이용한 비양수량의 상관성보다 훨씬 높게 나타난다. 그러나, 1.9차원의 경우에는 일반화 투수량계수와 산출계수간의 상관성이 일반화 투수량계수와 비양수량간의 상관성과 비슷하게 나타나며 상관계수도 높게 나타난다.

• 한국사회복지학
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• 제44권
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• pp.7-35
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• 2001

Little empirical study has been conducted concerning board function effectiveness and organizational performance in nonprofit nongovernmental human service organizations in Korea. Using the evaluations of 107 board members and 17 executive directors in Korean Community Chest and 16 regional community chests, this study attempted to examine the level of board function effectiveness and its relationship with organizational performance in these community chests. This study used board function scale developed by Holland and Jackson (1998) to measure board function effectiveness in the following 6 dimensions: contextual dimension: educational dimension: interpersonal dimension: analytical dimension: political dimension: and strategic dimension. This study showed that using 4 points scale, mean of overall board function effectiveness evaluated by board members is 2.62 and mean of overall board function effectiveness evaluated by executive directors is 2.73. That is, it showed that means of overall board function effectiveness are located in the middle point between negative evaluation and positive evaluation. On the other hand, using parametric correlation analysis method, it was found that in these community chests the association between board function effectiveness and organizational performance measured by fund-raising growth rate in $1999{\sim}2000\;and\;1998{\sim}2000$ is very weak and statistically nonsignificant. This study also revealed that using nonparametric correlation analysis method, the association between consensus level in evaluation by board members and executive directors about board function effectiveness, and organizational performance is still very weak and statistically nonsignificant. Finally, this study discussed the direction of future research in board function effectiveness and its relationship with organizational performance and the areas of board management that requires substantial efforts for promoting effectiveness of nonprofit human service organizations in Korea.

• 전자공학회논문지C
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• 제34C권9호
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• pp.68-76
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• 1997

This paper presents a system which recognizes dynamic hand gestures for virtual reality(VR). A dynamic hand gesture is a method of communication for a computer and human who uses gestures, especially both hands and fingers. Since the human hands and fingers are not the same in physical dimension, the same form of a gestrue produced by two persons with their hands may not have the same numerical values which are obtained through electronic sensors. In this paper, we apply a fuzzy min-max neural network and feature analysis method using fuzzy logic for on-line pattern recognition.

• 산업공학
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• 제16권2호
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• pp.140-148
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• 2003

This study was performed to measure the various dimensions of the hand for Korean adults. Three hundred and eighteen males and two hundred and sixty females, age ranged 18 to 60, participated in this study. Thirty-five dimensions were selected to measure. Subjects were divided into three age groups, 18 to 29, 30 to 39, and 40 to 60, for each sex. The data were analyzed to see the differences between the age groups and sex by using SAS program. The results showed that the measurements related to breadth and thickness tended to increase as the age increased. Wrist breadth, index finger breadth(distal), index finger breadth(proximal), thumb breadth, and index finger thickness(proximal) increased as the age increased for both males and females (p<0.05). However, the measurements related to length tended to increase as the age decreased. The relationship between the parts that are length related showed high correlation. Hand length showed high correlation with palm length, middle finger length and index finger length. Males' were significantly greater than females' in every dimension (p<0.05). Also, the results of this study were compared with the data of Japanese and U.S. army. The results of this study can be used to design the hand related products.

• 정보처리학회논문지B
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• 제15B권5호
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• pp.435-448
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• 2008

사용자 포즈의 3차원 데이터 생성을 통한 3차원 포즈 인식은 2차원 포즈 인식의 문제점을 해결하기 위해서 많이 연구되고 있지만, 3차원 표면 데이터의 방대한 양으로 포즈 인식에서 중요한 특징 추출(feature extraction)이 어렵고 수행 시간이 많이 걸리는 문제점을 가지고 있다. 본 논문에서는 3차원 포즈 인식의 두 가지 문제점인 특징 추출의 어려움과 느린 처리속도를 개선하기 위해서 3차원 형상복원 기술로 모델의 3차원 표면 점들로 구성된 데이터를 2차원 데이터로 변환하는 차원 축소(dimension reduction) 방법을 제안한다. 실린더형 외곽점을 이용한 메쉬없는 매개변수화(meshless parameterization) 방법은 방대한 데이터인 3차원 포즈 데이터를 2차원 데이터로 변환하여 특징 추출과 매칭과정의 연산 속도를 향상 시키며, 특징 추출의 효율성 검증을 위해 간단한 환경에서 실험이 가능한 손 포즈 인식 및 인간 포즈 인식에 적용하였다.

• 음성과학
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• 제14권4호
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• pp.81-98
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• 2007

This study aims to investigate whether shortened vowel duration conditioned by a following voiceless stop induces phonetic reduction of vowel space in English, and whether the reduction appears more in the height dimension than in the backness dimension (Lindblom, 1963; Flemming, 2005). Fifteen native speakers of American English read minimal pairs containing ten American English vowels in [bVd] and [bVt] syllables in a carrier phrase. All the subjects produced shorter vowels in the voiceless than in the voiced context. However, a reduction in vowel space and a raising of low vowels due to the shortened vowel duration were generally not found. To the contrary, the speakers tended to exhibit even more lowering of low vowels in the voiceless context, and vowel space was more commonly compressed in the backness dimension than in the height dimension. Many speakers, in particular, demonstrated fronting of the high back vowel [u] in the voiceless context. It was interpreted that due to a relatively large number of English vowels in the narrower low vowel space, the raising of low vowels may give rise to confusion in vowel contrasts, and therefore the degree of phonetic vowel reduction is restricted in that region. On the other hand, the high vowel region, being relatively spacious in English, allows a certain degree of phonetic vowel reduction in the F2 dimension. It is possible that heavy requirements for maintaining vowel contrasts may cause speakers to overachieve vowel target values, especially when faced with vowels which are difficult to distinguish due to shortened vowel duration, leading to an over-lowering of the low vowels.

• 말소리와 음성과학
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• 제6권4호
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• pp.53-65
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• 2014

The current research examines whether pitch contour shapes in North Kyungsang pitch accent contrasts provide a phonetic dimension for phonological discreteness in a mimicry task. Two pitch accent continua resynthesized were created for HH vs. HL and HH vs. LH. To confirm a phonetic dimension for accounting for pitch accent categories in North Kyungsang Korean, the mimicries of speakers of two dialects (i.e., North Kyungsang & South Cholla) were compared. One of the findings showed that, for North Kyungsang speakers, the range of mean f0 peak times was a phonetic dimension undergoing a continuous shift within a stimulus continuum for both HH vs. HL and HH vs. LH. On the other hand, for South Cholla speakers, there were no apparent shifts around categorical boundaries for either HH vs. HL or HH vs. LH. Regarding individual mimicries on f0 peak timing, there are many variations. For HH vs. LH, three North Kyungsang speakers showed a discrete pattern reflecting a shift in phonological categories, but for HH vs. HL, there was no such distinction showing a categorical shift, though there were statistically significant differences for two speakers. Interestingly, one of the North Kyungsang speakers showed a continuous phonetic dimension for both HH vs. HL and HH vs. LH. Lastly, the f0 valley timing did not exhibit a discrete or gradient phonetic dimension for speakers of either dialect. On the basis of these results, what is interesting is that the tonal target such as high tone in North Kyungsang pitch accent categories within the autosegmental-metrical (AM) theory may be realized within individual cognitive systems for representing the interaction of perception and production.

• 한국산업정보학회논문지
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• 제13권2호
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• pp.35-46
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• 2008

본 연구는 사용자가 급속히 증가하는 모바일 뱅킹 서비스 품질 측정을 통해 도출된 주요 요인을 기반으로 모바일 뱅킹 서비스의 전략을 도출하였다. 이를 위해 SERVQUAL 모형과 중요도-성과 도구를 활용하였다. 우선, 선행연구를 통해 모바일 뱅킹 서비스의 주요 요인을 SERVQUAL 모형을 이용해 사용자 만족에 영향을 주는 보증성, 고객지향성, 유형성, 신뢰성의 4가지 차원으로 분류했다. 이 요인들을 바탕으로 전략을 도출하기 위해 중요도-성과 분석을 실시하였다. 분석결과 사용자 만족에 가장 영향력이 높은 보증성 차원은 기대치는 높은데 비해 실제 성과가 낮아 중점개선부분으로, 고객지향성 차원은 기대와 성과가 모두 낮아서 만족도를 제고할 필요가 있었으며, 유형성 차원은 사용자가 실제 얻는 성과 수준은 높으나 기대치 수준은 그에 미치지 않아서 현재 수준 유지전략을, 신뢰성 차원은 성과도 높고 기대도 높아서 지속적 관리가 요구되는 전략이 필요함을 확인하였다.