타액선의 세침흡인 세포검사 - 221예 분석 -

박아영,김희경,김동원,진소영,이동화,Park, A-Young,Kim, Hee-Kyoung,Kim, Dong-Won,Jin, So-Young,Lee, Dong-Wha 대한세포병리학회 1999 대한세포병리학회지 Vol.10 No.2

Fine needle aspiration cytology of the salivary lesions was performed on 221 patients at Soonchunhyang University Hospital for 10 years. Of 221 aspirates, 6 aspirates(2.7%) were inadequate, 116 cases(52.5%) were non-neoplastic lesions, 76(34.4%) cases were benign neoplasms and 23 cases(10.4%) were malignant neoplasms. The cytologic diagnoses could be correlated with histologic findings in 58 cases. FNAC correctly discriminated between neoplastic and nonneoplastic lesions in fifty-seven lesions and failed in a case, and overall accuracy, sensitivity, and specificity were 98.3%, 98.0%, and 100.0%. FNAC correctly discriminated malignant neoplasms from benign neoplastic/nonneoplastic lesions in fifty-three cases and fatted in five cases, and overall accuracy, sensitivity, and specificity were 91.3%, 72.7%, and 95.7%. Among three false negative cases, two mucoepidermoid carcinomas were misdiagnosed as mucocele and benign neoplasm, and an acinic cell carcinoma were misdiagnosed as Warthin's tumor. Two false positive cases were a Warthin's tumor misdiagnosed as squamous cell carcinoma and a pleomorphic adenoma misinterpretated as suggestive of malignancy. In conclusion diagnostic accuracy of FNAC of salivary lesions is high, and the possibilities of low grade mucoepidermoid carcinoma and acinic cell carcinoma should be considered on hypocellular smears with mucoid or fluidy background.

타액선 관암종의 세침 흡인 세포학적 소견 - 1예 보고 -

박아영,김현정,김동원,이동화,Park, A-Young,Kim, Hyun-Jung,Kim, Dong-Won,Lee, Dong-Wha 대한세포병리학회 1997 대한세포병리학회지 Vol.8 No.2

Salivary duct carcinoma is rare high grade adenocarcinoma, arising from larger excretory duct in major salivary gland, resembling the ductal carcinoma of the breast histologically. We report a case of salivary duct carcinoma of left parotid gland in which fine needle aspiration cytology was performed. Cytologic examination revealed 1) moderate cellularity, 2) flat sheets or three dimensional, tightly cohesive clusters on the necrotic background, 3) sometimes cribriform or papillary configuration, 4) polygonal or cuboidal cells with moderate anisonucleosis with abundant, granular and eosinophilic cytoplasm, 5) round to oval nuclei with irregular chromatin clumps, and 6) 1 or 2 inconspicuous nucleoli. Histologically, the tumor is mainly composed of cribriform intraductal component with central comedonecrosis, and small foci of infiltrating component including well differentiated ductal structures or irregular sheets in a desmoplastic stroma.

The Study on Automatic Speech Recognizer Utilizing Mobile Platform on Korean EFL Learners' Pronunciation Development

박아영,Park, A Young Digital Contents Society 2017 한국디지털콘텐츠학회논문지 Vol.18 No.6

본 논문은 스마트폰의 플랫폼에 내장되어 있는 자동음성인식 기술을 활용하여 영어 학습자의 발음에 대한 즉각적인 문자 피드백을 제공하는 모바일 기반 발음 교수법이 영어 학습자의 자음 발음 (V-B, R-L, G-Z) 인식과 출력에 미치는 영향에 대해 연구했다. 특히, 자동음성인식 기술을 이용한 모바일 기반 발음 교수법을 사용한 그룹, 전통적인 교사 중심의 발음 교수법 그룹, 그리고 이 둘을 합친 하이브리드 교수법 그룹으로 나누어 영어 학습자의 발음 평가 결과를 (인지, 출력) 비교, 분석했다. ANCOVA를 이용한 분석 결과, 영어 학습자의 발음 출력에 있어 하이브리드 교수법 그룹이 (M=82.71, SD =3.3) 전통적인 교수법 그룹 (M=62.6, SD=4.05) 보다 유의미하게 높은 결과를 나타냈다 (p<.05). This study explored the effect of ASR-based pronunciation instruction, using a mobile platform, on EFL learners' pronunciation development. Particularly, this quasi-experimental study focused on whether using mobile ASR, which provides voice-to-text feedback, can enhance the perception and production of target English consonants minimal pairs (V-B, R-L, and G-Z) of Korean EFL learners. Three intact classes of 117 Korean university students were assigned to three groups: a) ASR Group: ASR-based pronunciation instruction providing textual feedback by the mobile ASR; b) Conventional Group: conventional face-to-face pronunciation instruction providing individual oral feedback by the instructor; and the c) Hybrid Group: ASR-based pronunciation instruction plus conventional pronunciation instruction. The ANCOVA results showed that the adjusted mean score for pronunciation production post-test on the Hybrid instruction group (M=82.71, SD =3.3) was significantly higher than the Conventional group (M=62.6, SD =4.05) (p<.05).

핀치이론의 수정 모델을 이용한 스프레이 모드의 해석

박아영,김선락,유중돈,Park, Ah-Young,Hammad, Muhammad A.,Kim, Sun-Rak,Yoo, Choong-D. 대한용접접합학회 2009 대한용접·접합학회지 Vol.27 No.5

While the pinch instability theory (PIT) has been widely employed to analyze the spray transfer mode in the gas metal arc welding (GMAW), it cannot predict the detaching drop size accurately. The PIT is modified in this work to increase the accuracy of prediction and to simulate the molten tip geometry to be more physically acceptable. Since the molten tip becomes a cone shape in the spray mode, the effective wire diameter is formulated that the effective diameter is inversely proportional to current square. Modifications are also made to consider the finite length of the liquid column and current leakage through the arc. While the effective diameter influences drop transfer significantly, the current leakage has negligible effects. The effects of modifications on drop transfer are analyzed, and the predicted drop diameters show good agreements with the experimental data of the steel wire.

율피 추출물의 피부에 미치는 영향

박아영 ( A Young Park ),김종봉 ( Jong Bong Kim ) 대구가톨릭대학교 자연과학연구소 2012 자연과학연구논문집 Vol.10 No.1

본 연구에서 율피추출물을 이용하여 DPPH 이용한 전자공여능 실험을 통하여 항산화 효과를 확인 하였고 시험관 내 실험 tyrosinase활성억제효과를검증하였으며 세포내 collagen 생성시험(Collagen synthesis assay)을 통하여 효과를 검증하였다. 그 결과는 다음과 같다. 1. DPPH 이용한 전자공여능 실험을 통하여 율피에탄올 추출물이 86.9±0.1로 다른 용매 추출물 보다 전자공여능이 높음을 알 수 있었다. 2. 시험관내 실험 tyrosinase활성억제 실험을 통하여 용매별 율피 추출물들이 tyrosinase활성을 측정한 결과 물 추출물은 양성대조군 사용한 알부틴과 비교하였을 때 (inhibition rate50%) 에서 비슷한 저해효과를 보이는 것을 확인할 수 있었다. 3. Procollagen typeⅠpeptide EIA kit를 이용하여 섬유아세포의 control군과 retinoic acid, 율피추출물들의 농도별 collagen 생합성량을 비교하였으며 율피 추출물이 섬유아세포의 collagen 생합성을 확인할 수 있었다. 이상의 실험 결과 율 피추출물이 항산화능과 tyrosinase활성저해효과를 동시에 나타내며 세포내 collagen 생합성 등 피부에 미치는 영향이 크다는 것으로 판단된다. Chestnut bark is the inner shell of a chestnut which is fruit of Castanea crenata S. et Z., perennial of beech. This research was carried out to examine the effects of extracts from chestnut bark. The chestnut bark extracts were extracted by water, ethanol and methanol as a solvents. Their effects on skin were analyzed. Antioxidant activity of chestnut bark extract was evaluated by measuring the reducing power of the extract using DPPH. Also, their effects on the collagen synthesis and the inhibition of tyrosinase activity were analyzed. The results obtained were as follows. 1. Their antioxidant activities on reducing power were higher. Among them, the antioxidant activity of methanol extract was the highest. 2. The tyrosinase activity was inhibited by the extracts as nearly as arbutin which was positive control group. Ethanol and methanol extracts inhibited the tyrosin activity significantly. 3. 99±08 ng of collagen was produced in control group while collagens were synthesized 168±1.4 ng, 161±1.1 ng and 225±0.3 ng in 70% ethanol extract group and retinoic acid group respectively. These results showed that chestnut bark extracts had the antioxidant activity, inhibitory effect on melanin synthesis and stimulation on collagen synthesis. Hence, the extract might be developed skin enhancement agent such as skin whitening.

분산분해와 뎁트랭크를 활용한 정보흐름에 기반으로 시스템 위험 측정에 관한 실증연구

박아영(A Young Park),김호용(Ho-Yong Kim),오갑진(Gabjin OH) 한국경영과학회 2015 한국경영과학회지 Vol.40 No.4

We analyze the systemic risk based on the information flows using the variance decomposition, DebtRank methods, and the Industry Sector Indices during 2001. 01 to 2015. 08. Using the KOSPI stock market as our setting, we find that (i) the systemic risk calculated by information flows of variance decompositions method shows strong positive relations with the market volatility, (ii) the magnitude of systemic risk measured from the information flows network by DebtRank method increases after the subprime financial crisis.

간호대학생을 위한 질 향상과 안전 역량강화 교육 프로그램 개발 및 효과 평가

박아영(Park, A Young),김계하(Kim, Kye Ha) 한국성인간호학회 2016 성인간호학회지 Vol.28 No.5

고등학교 영어 교사의 문화교육에 대한 인식 및 실태 연구

박아영(Park A Young) 학습자중심교과교육학회 2015 학습자중심교과교육연구 Vol.15 No.10

외국어 교육에 있어 문화는 의사소통 능력을 향상시키는데 반드시 필요한 교육의 영역이다. 이를 반영하여 2009 개정 영어과 교육과정에서는 문화교육과 언어교육의 병행을 강조하였으며, 2015 개정 영어과 교육과정에서는 구체적인 문화교육 성취 목 표를 제시하고 있다. 그러나 선행연구에 따르면 여전히 영어 수업 시간에 문화교육 은 제대로 이루어지지 않는 것으로 나타났다. 따라서 본 연구는 향후 문화교육 방향 정립을 위해, 문화를 학습자에게 소개하고 가르치는 중요한 주체인 영어 교사의 문 화교육에 대한 인식과 실태를 설문조사 하였다. 연구 결과 교사의 문화적 배경 지식 의 부족, 문화교육에 필요한 교수·학습 모델과 교재의 부재, 영어 평가에 문화 항목 이 포함되지 않는다는 이유로 영어 수업에서 문화 교육이 활발하게 이루어지지 않 고 있는 것으로 나타났다. 또한 문화교육 필요성에 대한 교사들의 인식도 상대적으 로 낮은 것으로 드러났다. 따라서 문화교육의 활성화를 위해, 문화 항목을 평가에 반영하고, 문화교육을 지원할 수 있는 다양한 교재와 교수·학습 모델을 개발하며, 문 화교육 관련 교사연수 프로그램을 실시해야 할 것이다. Although an understanding of teachers conceptions of teaching culture and their practices is central to the designing of English curriculum and teaching materials for promoting culture education, few studies have investigated teachers’ conceptions and practices with regard to cultural education. This research explores the conceptions and practices of culture education in English lessons held by 48 Korean high school English teachers. Questionnaire responses were analyzed to understand teachers’ conceptions on culture education and how they implement it within their English lessons. The results of the current study show that although most teachers believe culture education to be important in improving learners’ communicative competence, they struggle to implement it in their English lessons for the following reasons: (a) teachers themselves lack the necessary cultural background knowledge; (b) culture education is not included in statutory English testing, and (c) there is a lack of relevant teaching models and materials. These findings suggest that in-service culture education training courses would be valuable for teachers in extending their knowledge of other cultures and clarifying their own culture values. Also, culture education should be reflected in statutory English testing. Finally, more research is needed in order to develop teaching models and materials that support culture education.

차량용 인포테인먼트의 개인화 서비스 적용 방향 연구

박아영(Park a-young),최종훈(Choe jong-hoon) 한국콘텐츠학회 2019 한국콘텐츠학회 종합학술대회 논문집 Vol.2019 No.5

초등학교 전용(轉用)현황에 따른 학습공간배치 선호도 분석 연구

박아영(Park A-Young),최무혁(Choi Moo-Hyuck),최영오(Choi Young-Oh),최재원(Choi Jae-Won) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.8

Social phenomena are getting more complex and diversified, so educational environment is changing, too, along with that. This has led to more various demands on the learning space of elementary schools and thereby frequent altered use for each of the rooms. In order to reflect all these demands, it will be necessary to establish a flexible learning space. However, this issue has been regarded as just a sort of phenomenon and concrete research on it has not been sufficiently conducted so far. Besides, advances research has only dealt with the actual status of it. Thereupon, this study focuses on the status of altered use to a general classroom which is one of the social phenomena found from an overcrowded school and conducts analysis on the current status or situation of the learning space plan. Based on that, this article categorizes the types of arrangement and analyzes user satisfaction or preference of arrangement plans or types so as to suggest the basic knowledge for a reasonable measure for flexible learning space plan that can be properly applied later for altered use.