• 대한음성학회지:말소리
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• 제45호
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• pp.79-91
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• 2003

Utterance verification aims at rejecting both out-of-vocabulary (OOV) utterances and low-confidence-scored in-vocabulary (IV) utterances. For utterance verification on Korean connected digit recognition task, we investigate several methods to construct filler and anti-digit models. In particular, we propose a substitution error correction method based on 2-best decoding results. In this method, when 1st candidate is rejected, 2nd candidate is selected if it is accepted by a specific hypothesis test, instead of simply rejecting the 1st one. Experimental results show that the proposed method outperforms the conventional log likelihood ratio (LLR) test method.

• 대한수학회보
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• 제60권1호
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• pp.1-22
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• 2023

Let L(s, χ) be the Dirichlet L-series associated with an f-periodic complex function χ. Let P(X) ∈ ℂ[X]. We give an expression for ∑^f_n=1 χ(n)P(n) as a linear combination of the L(-n, χ)'s for 0 ≤ n < deg P(X). We deduce some consequences pertaining to the Chowla hypothesis implying that L(s, χ) > 0 for s > 0 for real Dirichlet characters χ. To date no extended numerical computation on this hypothesis is available. In fact by a result of R. C. Baker and H. L. Montgomery we know that it does not hold for almost all fundamental discriminants. Our present numerical computation shows that surprisingly it holds true for at least 65% of the real, even and primitive Dirichlet characters of conductors less than 10⁶. We also show that a generalized Chowla hypothesis holds true for at least 72% of the real, even and primitive Dirichlet characters of conductors less than 10⁶. Since checking this generalized Chowla's hypothesis is easy to program and relies only on exact computation with rational integers, we do think that it should be part of any numerical computation verifying that L(s, χ) > 0 for s > 0 for real Dirichlet characters χ. To date, this verification for real, even and primitive Dirichlet characters has been done only for conductors less than 2·10⁵.

• 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.

• 한국과학교육학회지
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• 제16권1호
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• pp.13-34
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• 1996

The purpose of this study is to develop appropriate science teaching models which can be applied effectively to relevant situations. Five science teaching models; cognitive conflict teaching models, generative teaching model, learning cycle teaching model, hypothesis verification teaching model and discovery teaching model, were identified from the existing models. The teaching models were modified and in primary and secondary students using a nonequivalent pretest-posttest control group design. Major findings of this study were as follows: 1. For teaching science concepts, three teaching models were found more effective; cognitive conflict teaching model, generative teaching model and discovery teaching model. 2. For teaching inquiry skills, two teaching models were found more effective; learning cycle teaching model and hypothesis verification teaching model. 3. For teaching scientific attitudes, two teaching models were found more effective; learning cycle teaching models and discovery teaching model. Each teaching model requires specific learning environment. It is strongly suggested that teachers should select a suitable teaching model carefully after evaluating the learning environment including teacher and student variables, learning objectives and curricular materials.

• 한국병원경영학회지
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• 제21권3호
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• pp.1-10
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• 2016

This study is to check up weather a brand of accreditation program for healthcare organizations recognized by the consumers as users of the healthcare organizations has effects for healthcare organizations' brand trust, attitude, and loyalty. This study suggests the hypothesis that a brand value of accreditation program for healthcare organizations gives the positive effect for the brand trust, attitude and loyalty, and that the brand trust and attitude of healthcare organizations which gain a brand of accreditation program for healthcare organizations cause the brand loyalty. To verify the hypothesis, this study made a questionnaire by using a measuring instrument for the brand value, trust, attitude and loyalty which come from the former study. This study carried out an analyzing method such as frequency analysis, reliability analysis, confirmed factor analysis and structural equation model to verify the hypothesis. From hypothesis verification, emotional and social brand values of accreditation program for healthcare organizations gave a positive effect to the brand trust and attitude on healthcare organizations. Its functional value did not give an effect to a brand attitude but gave a positive effect to healthcare organizations' brand loyalty. Emotional and social brand values of accreditation program for healthcare organizations did not give an effect to the brand loyalty. The brand trust and attitude of the healthcare organizations which gained accreditation program for healthcare organizations gave a positive effect to the brand loyalty on healthcare organizations.

• 인지과학
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• 제3권1호
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• pp.79-111
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• 1991

본 논문에서는 얼굴영상의 분석을 위하여 필요한 지식의 표현방법과 이를 활용하는 방법에 대하여 살펴본다.얼굴에 대한 모델지식을 계층적인 프레임 구조로 표현하는 방법과,표현된 모델지식을 이용하여 가설 생성및 검증을 수행하는 방법에 대하여 살펴본다.특히,가설생성및 검증의 각 단계에서의 문제영역에 관한 지식들을 어떠한 순서및 절차로 활용할 것인가 하는 문제에 촛점을 맞춘다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
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• pp.37-40
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• 2000

A fast method of Hangul address word verification is presented in this Paper. Pre-segmentation and recognition by DP matching is adopted in this paper. An address line image is over-segmented by analyzing the topology of connected components and the projection profile. A fast individual Hangul character verifier was developed by applying SVM (Support Vector Machine). The segmentation hypothesis was represented by lattice structure, and a best path search by dynamic programming generates the most probable segmentation path and the final verification score. The word verifier was tested on 310 address image DB, and it show the possibility of improvements of this method.

• 경영과정보연구
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• 제34권3호
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• pp.231-250
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• 2015

본 연구는 기업 SNS 내 소비자의 상호작용과 몰입이 소비자의 애착에 미치는 영향에 관한 연구로 이론적 배경을 바탕으로 하여 실증분석을 통해 검증하였으며, 연구결과를 토대로 연구결과를 요약하면 다음과 같다. 첫째, 콘텐츠 이용 동기 측면과 상호작용성과의 관계를 살펴보면 다음과 같다. 상호연대감(가설1-1), 영향력(가설1-2), 연결성(가설1-3), 반응성(가설 1-4) 모두 상호작용에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 콘텐츠 이용 동기 측면과 몰입과의 관계는 다음과 같다. 상호연대감(가설2-1), 영향력(가설2-2), 연결성(가설2-3)이 몰입에 정(+)의 영향을 미치는 것으로 나타났다. 반면, 반응성(가설 1-4)은 몰입에는 통계적으로 유의하지 않은 것으로 나타났다. 셋째, 콘텐츠 특성과 상호작용과의 관계는 오락성(가설3-1),정보성(가설 3-2)모두 상호작용성에 정(+)의 영향을 미치는 것으로 나타났다. 넷째, 콘텐츠 특성과 몰입과의 관계를 살펴보면 정보성(가설4-2)만이 몰입에 정(+)의 영향을 미치는 반면에 오락성은 몰입에 통계적으로 유의하지 않은 것으로 나타났다. 마지막으로 상호작용과 몰입 그리고 애착과의 관계는 다음과 같다. 상호작용성과 몰입과의 관계(가설 5)는 통계적으로 유의하지 않은 것으로 나타난 반면에 상호작용성(가설6)과 몰입(가설7)은 모두 애착에 정(+)의 영향을 미치는 것으로 나타났다. 이러한 결과를 바탕으로 기업 SNS를 이용하는 실무자에게 다양한 시사점과 의의를 제시 하였다.

• 한국응용과학기술학회지
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• 제37권4호
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• pp.1008-1019
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• 2020

본 연구는 학점은행제 체육학전공 학습자의 사회적지지가 전공만족 및 학습지속의향에 미치는 영향을 규명하여 학점은행제의 체육학 전공자들의 중도탈락을 방지하고 효과적인 운영 방안을 모색하고자 하는데 연구의 목적이 있다. 연구방법은 학점은행제 체육학전공에 학습자를 대상으로 서울의 학점은행제 3곳을 선정하여 총 118부(90.8%)를 유효 표본으로 사용하였다. 조사도구의 타당도와 신뢰도 검증을 위해 확인적 요인분석과 집중타당도, 판별타당도, 평균분산추출(AVE), 개념신뢰도, Cronbach's α 계수를 검증하였다. 자료처리방법은 IBM SPSS statistics 21과 IBM AMOS 21을 이용하여 빈도분석, 확인적 요인분석, 집중타당도, 판별타당도, Cronbach's α 계수 산출을 통한 신뢰도분석(reliability analysis), 상관관계분석(correlation analysis), 구조방정식모형(SEM) 검증을 실시하였다. 연구결과는 다음과 같다. 첫째, 학점은행제 체육학전공 학습자의 교수의 사회적지지와 전공만족 및 학습지속의향의 관계를 분석하기 연구모형의 적합도 검증한 결과 기준을 충족하였다. 둘째, 가설 1의 검증 결과, 학점은행제 체육학전공 학습자의 교수의 사회적지지는 전공만족에 유의한 영향을 미치는 것으로 나타났다. 가설 2의 검증 결과, 학점은행제 체육학전공 학습자의 교수의 사회적지지는 학습지속의향에 영향을 미치는 것으로 나타났다. 가설 3의 검증 결과, 전공만족은 학습지속의향에 유의한 영향을 미치는 것으로 나타났다.

• 대한조선학회논문집
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• 제53권2호
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• pp.127-134
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• 2016

This paper presents practical issues for test and evaluation(T&E) methods to develop defense systems. Our argument is motivated by several domestic defense cases and the cases lead us to discuss two main factors for reliable defense systems development: 1) statistical approaches and 2) technical schemes. Specifically, statistical approaches enable to provide credible interpretations about T&E results in the decision-making process. With practical T&E results of the “Red Shark” torpedo, we performed statistical hypothesis tests and suggest a minimum sample size to accept the hypothesis. Next, technical schemes have more direct effects on improving reliability of developed defense systems and we shortly introduce tools development for systems verification that is required to integrate several sub-systems, e.g., combat, sensor, weapon, and communication systems, within a defense system. We additionally summary some domain cases using modeling and simulation techniques for successful T&E. In closing, we expect that the paper shows empirical investigation and lessons learned with these two practical issues, which provides a guide those who desire to make decisions about reliable defense systems development.