한국어 음성인식을 위한 음성학 기반의 유사음소단위 집합 설계

홍혜진,김선희,정민화,Hong, Hye-Jin,Kim, Sun-Hee,Chung, Min-Hwa 대한음성학회 2008 말소리 Vol.65 No.-

This paper presents the effects of different phone-like-unit (PLU) sets in order to propose an optimal PLU set for the performance improvement of Korean automatic speech recognition (ASR) systems. The examination of 9 currently used PLU sets indicates that most of them include a selection of allophones without any sufficient phonetic base. In this paper, a total of 34 PLU sets are designed based on Korean phonetic characteristics arid the effects of each PLU set are evaluated through experiments. The results show that the accuracy rate of each phone is influenced by different phonetic constraint(s) which determine(s) the PLU sets, and that an optimal PLU set can be anticipated through the phonetic analysis of the given speech data.

구간척도를 사용하는 경우 신뢰도 할당 가중치의 결정방법

홍혜진 ( Hye Jin Hong ),김경미 ( Kyung Mee Kim ) 한국경영공학회 2013 한국경영공학회지 Vol.18 No.3

Reliability allocation is a procedure that apportions the system reliability goal into the constituent subsystems during the design stage of a system. Previously, different reliability allocation methods have been developed based on the ten-point interval scales. In this paper, we point out theoretical limitations of previous methods, and three methods are suggested considering the degree of dependability on the obtained ten-point values. If a difference of two interval values is meaningful to the designer, then a modified Karmiol method is recommended. Otherwise if not the difference but only the rank of values is meaningful, a rank-based method is useful. Finally, if a difference of two values can be transformed into a ratio scale, then the well known AHP method can be applied. An example is given to illustrate the proposed methods.

AEDT와 항적자료를 이용한 항공기 연료소모량 산출

홍혜진(Hye-Jin Hong),박건환(Geon-Hwan Park),박재우(Jae-Woo Park),이승표(Seung-Pyo Lee),구성관(SungKwan Ku) 한국항공우주학회 2022 한국항공우주학회 학술발표회 논문집 Vol.2022 No.11

올벚나무 잎 추출물의 항염 효능 및 유효성분 규명

홍혜진 ( Hye Jin Hong ),고하나 ( Ha Na Ko ),이남호 ( Nam Ho Lee ) 대한화장품학회 2019 대한화장품학회지 Vol.45 No.2

올벚나무 잎 추출물을 제조하고 LPS로 자극시킨 RAW 264.7 대식세포에 대한 항염 효과를 조사하였다. 추출물 및 분획물(n-hexane, ethyl acetate, n-butanol 및 water)에 대하여 활성 실험을 진행한 결과, 100 μg/mL 농도에서 ethyl acetate (EtOAc) 분획물이 세포독성 없이 76.3%의 NO 생성 억제 효과를 나타내었다. 또한 EtOAc 분획물이 농도 의존적으로 NO 생성을 효과적으로 억제하고 있음을 확인하였다. 이러한 항염효과에 대한 추가적인 기전 연구를 진행한 결과, EtOAc 분획물이 PGE2, IL-1 β 및 IL-6의 생성을 감소시켰으며, iNOS와COX-2 단백질의 발현도 억제시키는 것을 확인하였다. EtOAc분획물에서 활성 성분을 규명하기 위하여 column chromatography를 진행하였으며 5개의 화합물을 분리 동정하였다. ursolic acid (1), prunasin (2), methyl p-coumarate (3), kaempferol (4), astragalin (5). 분리된 compound 1 - 5는 모두 올벚나무 잎에서 처음 분리된 물질이다. 분리된 화합물을 대상으로 활성 실험을 진행한 결과, 플라보노이드 compound 4와 5가 NO 생성을 억제하고 있음을 확인하였다. 이상의 결과를 바탕으로, 플라보노이드를 유효성분으로 함유하는 올벚나무 잎은 항염 효과를 갖는 천연 소재로서 활용이 가능할 것이라 사료된다. In this study Anti-inflammatory activity was investigated for the extract of Prunus pendula for. ascendens (Makino) Ohwi by monitoring nitric oxide (NO) production in LPS-stimulated RAW 264.7 murine macrophage cells. The P. pendula ethyl acetate (EtOAc) fraction showed to decrease the NO synthesis by 76.3% at 100 μg/mL concentration. The inhibition occurred in a dose-dependent manner without causing cell toxicity. The EtOAc fraction also inhibited the production of PGE2, IL-1β, IL-6 and expression of iNOS, COX-2 protein in dose-dependent manner. From the phytochemical study to isolate the active constituents, five known compounds were identified, which are ursolic acid (1), prunasin (2), methyl p-coumarate (3), kaempferol (4), astragalin (5). All of the compounds 1 - 5 were isolated for the first time from the P. pendula. Among the isolates, the flavonoids 4 and 5 were verified to inhibit NO production with high efficiency. These results suggested that extract of P. pendula leaves could be useful as anti-inflammatory agents in pharmaceutical or cosmetic applications.

초등 수학영재와 일반학생의 사고양식 및 수학적 능력 구성 요소

홍혜진 ( Hye Jin Hong ),강완 ( Wan Kang ),임다원 ( Da Won Lim ) 한국수학교육학회 2014 初等 數學敎育 Vol.17 No.2

본 연구의 목적은 영재의 사고양식 및 수학적 능력의 특성을 밝혀 영재의 특성을 고려한 프로그램 개발에 이바지하고자 하는 데 있다. 이를 위해 초등학교 수학영재교육 대상자와 일반학생을 대상으로 사고양식과 수학적 능력의 구성 요소를 분석하고, 두 변인간의 상호관련성을 탐색하였다. 연구 결과에 따르면 수학영재교육대상자가 일반학생에 비해 입법형, 사법형, 위계형, 전체형, 부분형 내부지향형, 자유형의 사고양식이 높을 뿐만 아니라 계산력, 추론능력, 가역성, 일반화, 공간, 기억력의 수학적 능력 또한 수학영재교육대상자가 일반학생보다 높은 것으로 나타났다. 그리고 회기분석 결과, 사고양식과 수학적 능력 간에는 어느 정도 상관관계가 있음을 알 수 있었다. The purpose of this study was to investigate the relationships between thinking styles and the components of mathematical ability of elementary math gifted children. The results of this study were as follows:First, there were differences in thinking styles: The gifted students prefer legislative, judical, hierarchic, global, internal and liberal thinking styles. General students prefer oligarchic and conservative thinking styles. Second, there were differences in components of mathematical ability: The gifted students scored high in all sections. And if when they scored high in one section, then they most likely scored high in the other sections as well. But the spacial related lowly to the generalization and memorization. There is no significant relationship between memorization and calculationThird, there was a correlation between thinking styles and components of mathematical ability: Some thinking styles were related to components of mathematical ability. In functions of thinking styles, legislative style have higher effect on calculation. And executive, judical styles related negatively to the inference ability. In forms of thinking styles monarchic style had higher effect on space ability, hierarchic style had higher effect on calculation. Monarchic, hierarchic styles related negatively to inference ability. In level of thinking styles global, local styles have higher effect on calculation. Local styles related negatively to the inference ability. In the scope of thinking styles, internal style had a higher effect on generalization, and external style had a higher effect on calculation. And there is no significant relationship leaning of thinking styles.

인체진동영향평가를 위한 하중모델링 기법에 관한 연구

홍혜진(Hong Hye Jin),박연수(Park Yeon Soo),박선준(Park Sun Joon),김응록(Kim Eung Rok) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

Recovery of copper from waste effluent by selective adsorption technique by polyethylene imine modified cellulose nanofibril biosobent and reprocessing as a copper nanoparticle

Hye-Jin Hong(홍혜진) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11

장신구사에 나타나는 상징적 의미에 관한 연구

홍혜진(Hong Hye-Jin) 한국디자인학회 2005 디자인학연구 Vol.18 No.1

일반품질연구 : 신규 개발하는 소모성 발사체의 베이지안 신뢰도 추정

홍혜진 ( Hye Jin Hong ),김경미 ( Kyungmee O Kim ) 한국품질경영학회 2014 품질경영학회지 Vol.42 No.2

Purpose: This paper explains how to obtain the Bayes estimates of the whole launch vehicle and of a vehiclestage, respectively, for a newly developed expendable launch vehicle. Methods: We determine the parameters of the beta prior distribution using the upper bound of the 60%Clopper-Pearson confidence interval of failure probability which is calculated from previous launch data consideringthe experience of the developer. Results: Probability that a launch vehicle developed from an inexperienced developer succeeds in the firstlaunch is obtained by about one third, which is much smaller than that estimated from the previous research. Conclusion: The proposed approach provides a more conservative estimate than the previous noninformativeprior, which is more reasonable especially for the initial reliability of a new vehicle which is developed byan inexperienced developer.

유아의 가족건강성이 사회적 유능감에 미치는 영향: 자기조절력의 매개효과를 중심으로

홍혜진(Hong, Hye-Jin),김경숙(Kim, Kyung-Sook) 한국영유아보육학회 2020 한국영유아보육학 Vol.0 No.124

본 연구는 유아의 가족건강성이 사회적 유능감에 미치는 영향에서 자기조절력의 매개효과를 밝혀보기 위해 수행되었다. 본 연구의 대상은 G시에 소재한 유치원에 재원중인 만 4, 5세 유아 273명과 그들의 가족이었다. 유아의 사회적 유능감과 자기조절력은 유아의 담임교사가 평정하였으며 가족건강성은 유아의 어머니가 평정하였다. 수집된 자료는 SPSS 21.0 프로그램을 사용하여 Pearson 상관분석 및 Baron과 Kenny의 3단계 매개회귀분석을 실시한 후 sobel test를 실시하였다. 이러한 연구 수행의 결과는 다음과 같다. 첫째, 유아의 가족건강성, 사회적 유능감, 그리고 자기조절력 간에 유의미한 정적 상관관계가 있었다. 둘째, 유아의 가족건강성은 자기조절력을 매개로 사회적 유능감에 정적 방향으로 영향을 미치는 것으로 나타났다. 본 연구의 결과는 유아의 가족건강성 뿐 아니라 자기조절력 정도를 함께 고려함으로써 유아의 가족건강성이 사회적 유능감에 미치는 영향을 보다 신뢰롭게 파악할 수 있으며 유아의 가족건강성 뿐 아니라 자기조절력을 길러줌으로써 유아의 사회적 유능감을 증진시킬 수 있을 것임을 시사한다. The purpose of this study is to determine the mediated effect of young children’s self-regulation within the effects of their family strengths on the children’s social competence. A total of 273 children aged 4-5 participated in this study. The children’s teachers rated the children’s social competence and self-regulation while their mothers rated their family strengths. The analysis of the data was conducted with Pearson correlational analysis and the 3-step mediation regression analysis (Baron & Kenny) using SPSS 21.0, and then the Sobel test was conducted. The results of this study are summarized as the following. First, there were positive relationships among young children’s family strengths, social competence, and self-regulation. Second, young children’s self-regulation had a mediated effect within the effects of their family strengths on the children’s social competence. The results of the study suggest that we may understand better young children’s social competence by considering young children’s family strengths and self-regulation together and we could enhance their social competence by nurturing their self-regulation and family strengths.