GIS 자료를 이용한 지면 경계 자료 구축 및 도시 지역의 상세 흐름 분석

권아름,김재진,강건,왕장운 한국기상학회 2015 한국기상학회 학술대회 논문집 Vol.2015 No.4

1형 당뇨병 환자에서 생리주기 이상

권아름,채현욱,김호성,김덕희 대한소아내분비학회 2009 Annals of Pediatirc Endocrinology & Metabolism Vol.14 No.2

Purpose:This study compares the prevalence of pubertal menstrual disorders in type 1 diabetes mellitus (DM) patients with that in normal subjects. Methods:A questionnaire was used to obtain data on pubertal development and menstrual history from 43 type 1 DM patients, who were diagnosed at the pediatrics department of Severance Children’s Hospital, Yonsei University, and 56 normal control subjects. We evaluated the estrogen levels in all type 1 DM patients. Results:The age at onset of puberty did not significantly differ between the 2 groups. However, the prevalence of oligomenorrhea in type 1 DM patients (21.21%) was significantly higher than that in the control group (2.08%; P˂0.05). In addition, the incidence of amenorrhea in type 1 DM patients (20.59%) was significantly higher than that in the control group (2.08%; P˂0.05 ). Pubertal development in type 1 DM patients was delayed due to elevated levels of glycosylated hemoglobin (HbA1c). The delay (9 months) in pubertal development in the patients diagnosed with type 1 DM at prepubertal ages was shorter than that (14.8 months) in the patients diagnosed with type 1 DM at postpubertal age (P˂0.05). The level of LH, FSH were higher and E2 level was lower in DM patients compared to control group, especially in diabetics with amenorrhea (P˂0.05). Conclusion:We observed a high frequency of delayed pubertal development and menstruation irregularities in patients who were diagnosed with type 1 DM at the prepubertal age or in type 1 DM patients with high levels of HbA1c. This finding can be attributed to the decreased plasma levels of E2 or due to the decreased E2 activity in patients with type 1 DM. Further evaluation of hormonal changes in type 1 DM patients is essential. 목 적:최근 1형 당뇨 여아에게서 사춘기 발달이 늦거나, 생리 이상의 빈도가 높다는 연구 결과가 있었다. 본 연구에서는 한국에서 사춘기 연령의 1형 당뇨 여아에서 정상 사춘기 여아와 비교하였을 때 사춘기 지연 및 생리 이상의 빈도에 차이가 있는지 알아보고, 그 원인을 규명하고자 한다. 방 법:2006년 이후 연세대학교 세브란스 어린이병원 소아청소년과에서, 1형 당뇨병으로 진단받은 만 10세에서 17세 사이의 여아 43명을 대상으로 하였고, 정상 대조군은 같은 연령의 만성 기저 질환이 없는 정상 여아 56명을 선정하였다. 모든 대상자의 신장 및 몸무게를 측정하고, 생리 주기 및 기간, 생리 불순 및 무월경 여부 등에 대해 설문조사를 하였으며, 당뇨 환자에게는 혈당 조절 정도와 에스트로겐의 농도를 측정하였다. 결 과:당뇨환자와 정상 대조군의 평균 연령의 유의한 차이는 없었다. 당뇨 환자와 정상 대조군 사이에 사춘기 발달 시기의 유의한 차이는 없었으나, 희발 생리는 1형 당뇨 환자와 정상 대조군에서 각각 21.21%, 2.08% 로 당뇨 환아에서 더 높았고, 무월경은 1형 당뇨 환자에서 20.59%로 정상 대조군 2.08% 에 비해 높았다. 1형 당뇨 환자 중, 당화혈색소가 높을수록 사춘기가 지연되는 경향을 보였고, 사춘기 시작 이전에 당뇨가 발병한 경우 유방 발달 시기는 사춘기 시작 이후에 발병한 군보다 약 9개월, 초경 시기는 약 14.8개월 가량 늦었다. 당뇨 환자에서 LH 및 FSH의 농도는 정상 사춘기 여아에 비해 증가되었고, 이는 무월경이 있을수록 더욱 높았다. 또한 당뇨 환자에서 혈중 E2의 농도는 정상 사춘기 여아에 비해 의미 있게 낮았고, 무월경이 있을 경우에는 더 낮았다. 결 론:본 연구에서는 사춘기 시기 당뇨 여아에서 사춘기 이전에 당뇨가 발병했을 경우, 당화혈색소가 높을수록 사춘기 발달이 늦어지고 생리 불순이 많았으며, 이는 혈중 E2농도 저하나 작용 기전 저하 때문으로 생각되며, 그 기전에 대해 추후 연구가 필요하다.

프라이밍 처리가 갯기름나물 종자 발아에 미치는 영향

권아름,김수동,성봉재,김선익,지무근,김현호 한국약용작물학회 2017 한국약용작물학술대회 발표집 Vol.2017 No.09

WRF-Chem 모델과 결합된 CFD 모델을 활용한 도시 지역의 일산화탄소 확산 연구

권아름,박수진,강건,김재진 대한원격탐사학회 2020 大韓遠隔探査學會誌 Vol.36 No.5

본 연구에서는 CFD 모델을 WRF-Chem 모델과 결합(WRF-CFD 모델)하였고, 서울 영등포구에 소재한건물 밀집 지역에서 흐름과 일산화탄소(carbon monoxide, CO) 분포 특성을 조사하였다. 이를 위하여, 자동기상관측소에서 측정한 풍속, 풍향과 도시대기측정소에서 측정한 CO 농도를 이용하여 수치 모의 결과를 검증하였다. AWS 510 지점에서는 남풍과 남서풍 계열 바람이 측정되었고, 야간 시간 보다는 주간 시간에 높은 풍속이 측정되었다. WRF-Chem 모델은 주로 동남동풍에서 서남서풍 계열의 바람을 수치 모의하였고, 측정 풍속을과대 모의하였다. WRF-CFD 모델이 수치 모의한 풍향은 WRF-Chem 모델 풍향에 대한 의존도가 높았고, 측정풍속을 상대적으로 잘 수치 모의하였다. 통계적 검증 지수에 대한 목표 값과 추천 범위를 고려하였을 때, WRFCFD 모델이 WRF-Chem 모델에 비해 측정 풍속을 통계적으로 더 현실적으로 수치 모의하였다. WRF-Chem 모델은 측정 CO 농도를 크게 과소 모의하였고, WRF-CFD 모델은 CO 농도 예측을 개선하였다. 통계적 검증 결과를 종합한 결과, WRF-CFD 모델은 도시 지역에 복잡하게 분포한 건물과 이동 오염원을 고려함으로써 CO 농도예측 성능을 개선하였다. 5월 22일 04시에는 AQMS가 위치한 지역에는 하강류가 존재하고, 상층으로부터 비교적 낮은 농도의 CO가 유입되면서 주변 지역에 비해 낮은 농도가 수치 모의되었다. 5월 22일 15시에는 AQMS 측정 지점에 약한 상승류가 형성되었고, 이에 따라 주변보다 다소 높은 CO 농도가 나타났다. WRF-CFD 모델은 상승류에 의해 도로의 이동 오염원으로부터 배출된 CO를 AQMS 측정 고도까지 수송하여, 결과적으로, 측정 CO 농도를 잘 재현한 것으로 판단된다. 5월 22일 18시 사례는 CO 배출량 증가, 상승류 발생 지역 증가, 풍속증가로 인한 지면 근처의 난류운동에너지 생성 증가에 따른 난류 확산 증가 등으로 인해 전체적으로 높은 CO 농도가 수치 모의되었다. AQMS 지점에서는 하강류가 수치 모의되었지만, 풍상측에 형성된 고농도의 CO 밴드로 인해WRF-CFD 모델은 측정 CO 농도를 과대 모의하였다. We coupled a CFD model to the WRF-Chem model (WRF-CFD model) and investigated the characteristics of flows and carbon monoxide (CO) distributions in a building-congested district. We validated the simulated results against the measured wind speeds, wind directions, and CO concentrations. The WRF-Chem model simulated the winds from southwesterly to southeasterly, overestimating the measured wind speeds. The statistical validation showed that the WRF-CFD model simulated the measured wind speeds more realistically than the WRF-Chem model. The WRF-Chem model significantly underestimated the measured CO concentrations, and the WRF-CFD model improved the CO concentration prediction. Based on the statistical validation results, the WRF-CFD model improved the performance in predicting the CO concentrations by taking complicatedly distributed buildings and mobiles sources of CO into account. At 04 KST on May 22, there was a downdraft around the AQMS, and airflow with a relatively low CO concentration was advected from the upper layer. Resultantly, the CO concentration was lower at the AQMS than the surrounding area. At 15 KST on May 22, there was an updraft around the AQMS. This resulted in a slightly higher CO concentration than the surroundings. The WRF-CFD model transported CO emitted from the mobile sources to the AQMS measurement altitude, well reproducing the measured CO concentration. At 18 KST on May 22, the WRF-CFD model simulated high CO concentrations because of high CO emission, broad updraft area, and an increase in turbulent diffusion cause by wind-shear increase near the ground.

지황 단경기 생산을 위한 적정 정식시기

권아름,김수동,성봉재,김선익,지무근,이가순,김현호 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10

Background : Rehmannia glutinosa L. that is a perennial plant belonging to the family Scrophulariaceae is one of the most popular local income crops. Recently, the cultivation area of Chungnam (2017) accounts for 50.5% (106 ha) of the whole country. In July and August, which is the off-season at the highest price of R, glutinosa L. This experiment was carried out to develop early harvest cultivation technology for the improve farm income. Methods and Results : In order to investigate the growth characteristic and yield of R, glutinosa L. by using the rhizome of 'Tokang' were transplanted four times at intervals of 10 days from mid-March to mid-April 2017 and 2018. Growth characteristics of the above and under ground part were investigated by 3 repetitions for 10 ea harvested in mid-July. Regression analysis was performed on the relationship between the planting time and fresh root weight. The highest emergence rate was 88.7% in the mid-March, and the highest above ground part growth was observed in the plant height, leaf number, leaf length, leaf width, and fresh leaves weight. The number of days to flowering tended to be shortened to 60, 53, 52, and 49 days from the mid-March to the mid-April. The growth of underground part was also highest in mid-March and the total root weight per 10 a was also 1,127.4 ㎏ in mid-March. The faster the planting time, the higher the yield. The results of the linear regression on the roots weight according to the planting time showed that there was a negative correlation relation between the planting time, the marketable roots weight, rhizome weight and total roots weight. Conclusion : The total roots weight improved by 80% in the mid-March than mid-April. Therefore, mid-March is considered optimal planting time for off-season production of R. glutinosa L.

식방풍 국내 수집종의 생육특성

권아름,김수동,성봉재,김선익,지무근,이가순,김현호 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10

Background : Peucedanum japonicum Thunberg is herbaceous plant belonging to the umbelliferea. Its root is used as a herbal medicine. Recently, it is cultivated as one of the crops which are attracting attention as a new income crops by using leaf. It is cultivated as native variety and has no standard variety. As a first step to expand cultivation in Korea, we investigated growth characteristics of P. japonicum Thunberg which were collected from domestic regions to select standard variety for P. japonicum Thunberg. Methods and Results : From April in 2017 to June in 2018, total 245 individuals of Peucedanum japonicum Thunberg in forms of seedling from 24 locations including 7 Chungnam, 10 Gyeongbuk, 2 Jeonnam, 1 Gangwon and 4 Jeju were collected and 40 × 20 ㎝ intervals transplanted. In August 2018, the research was carried out on 4 qualitative traits such as stem color, peduncle color, and 11 qualitative traits such as plant height, leaf length, and leaf width based on the test guidelines. As a result, the 21 - 2 species collected in Jeju showed the best growth with 88.0 ㎝ plant height, 267 leaf number, and 174 peduncle number. A total of 245 collecting species were classified into 4 qualitative traits. The stem color was classified into green 125, red green 98, crimson green 21, and light green 1. The 114 species which were developed into flower were divided into green 94, red green 17, crimson green 2, and light green 1, and immature seed color was classified into green 88 and red green 26. The anthocyanin expression was excellent, and the total number of stem color, peduncle color, and immature seed color were 7 collecting species. The inflorescence type was classified into 54 semi-circular type, 47 straight type, 12 spread type. The 4 - 4 species collected in Taean were not registered in the test guidelines, and the compound umbel and cyme were appeared together. Conclusion : The growth characteristics show various differences among collection areas. It is considered that the superior lines can be selected as a standard variety breeding material by comparing the growth characteristics of the collected species.

AI 서비스의 사용성 향상을 위한 인터랙션 디자인 연구: 헤이카카오, 네이버 클로바를 중심으로

권아름,김승인 차세대컨버전스정보서비스학회 2023 디지털예술공학멀티미디어논문지 Vol.10 No.2

In this paper, study on user experience to improve the usability of AI service platforms. There are natural language processing and technical problems that AI technology penetrates into life but cannot continue natural conversations. Accordingly, in order to examine the user experience, the user experience of Kakao's Hey Kakao and Naver's Clova application, which provide domestic AI complex services, was compared and analyzed. As a research method, a 1:1 face-to-face in-depth survey was conducted on men and women in their 20s and 40s who are familiar with VUI use, and user experience was analyzed by matching VUI usability category items such as efficiency, accuracy, flexibility, consistency, meaning, and AI usability evaluation. As a result, both applications had a different understanding of command recognition from feature to feature, and were also inconsistent with the use of VUI and UI in providing information and content. Therefore, in order to increase usability, technical problems with command recognition, high-level information provision, and consistent interaction design should be considered. 본 연구는 AI 서비스 플랫폼의 사용성 향상을 위한 사용자 경험에 관한 연구이다. AI 기술이 생활 속으로 파고들지만 자연스러운 대화를 이어가지 못하는 자연어 처리와 기술적 문제가 있다. 이에 사용자 경험을 고찰하고자 국내 AI 복합서비스를 제공하는 카카오의 헤이카카오와 네이버의 클로바 애플리케이션의 사용자 경험을 비교·분석하였다. 연구 방법으로는 VUI 사용에 익숙한 20-40대 남녀를 대상으로 1:1 대면 심층 설문조사를 진행했으며 사용성 평가 설계를 위해 VUI 사용성 범주 항목인 효율성, 정확성, 유연성, 일관성, 의미성과 AI 사용성 평가를 위한 항목 개인맞춤화, 다양성, 편의성, 전문성, 실시간성을 매칭하여 사용성 평가 목록을 작성한 후 사용자 경험을 분석하였다. 그 결과, 두 애플리케이션 모두 명령어 인식에 대해 이해도가 기능마다 상이했으며, 정보 및 콘텐츠 제공에 있어 VUI와 UI 사용에 대해서도 일관성이 떨어졌다. 따라서 사용성을 높이기 위해서는 명령어 인식에 대한 기술적 문제와 고차원적인 정보 제공, 일관적인 인터랙션 디자인이 고려되어야 할 것이다.

평생교육을 위한 온라인 대학원 발전방안 제안

권아름,김승인 한국디지털정책학회 2022 디지털융복합연구 Vol.20 No.3

This study requires a new paradigm for universities in line with the global pandemic and the 4th industrial revolution. Accordingly, we propose an educational plan for the H university online graduate school in Korea. As a research method, the implications of scholars and experts on future education were synthesized, and the cases of overseas universities using it were analyzed to propose an online graduate school education plan. As a result of the study, online graduate school needs diversity as a venue for providing new opportunities as lifelong education, and to realize this, they use a microcredit. Blockchain technology is introduced so that microcredit can be transparently verified. In addition, to correspond to various convergence major programs and further develop them, problem-solving-oriented teaching methods enhance students' convergent skills as well as active learning and interaction. More detailed curriculum research at online graduate schools is needed in the future, and we hope that you will contribute to the development of online graduate school education based on this study. 본 연구는 4차산업혁명과 글로벌 팬데믹이라는 시대적 요구에 대학에도 새로운 패러다임이 필요한 현 상황을 배경으로 이에 따른 평생교육으로서의 온라인 대학원 신설을 위한 교육 방안을 제안하였다. 연구 방법으로는 학자와 전문가들의 미래 교육에 대한 시사점과 의견을 종합하고 이를 활용한 해외 대학의 사례들을 분석하여 온라인 대학원 교육 방안을 제안하였다. 연구 결과 온라인 대학원은 평생교육으로서 새로운 기회를 제공하는 장이 되어 다양성이 필요하고 이를 실현하기 위해서 마이크로 크레디트(Micro Credit) 학사 운영 방식을 활용한다. 또한, 다양하고 융합 전공 프로그램에 상응하고 이를 더 발전시킬 수 있도록 문제해결 중심의 교수 방법으로 학생들의 융합적 문제해결 능력과 더불어 능동적인 학습과 학생 간, 교수 간 상호작용을 높이도록 한다. 추후 온라인 대학원의 더 세부적인 교과과정 연구가 필요하며 본 연구를 토대로 온라인 대학원 교육 발전 연구에 기여하길 바란다.

Chinese speakers perceptibility of the Korean voiceless obstruents

권아름 한국언어연구학회 2014 언어학연구 Vol.19 No.3

One characteristic of Korean consonants is that there are three distinctive voiceless sounds in the stop category. Since Chinese has two-way contrast stop consonants while Korean has three-way contrast stop consonants, it was anticipated that the Chinese group selected for the experiment would demonstrate particular difficulties in learning a foreign language with a different system of contrast consonants. This paper suggests factors in two aspects as major factors in distinguishing the three-way contrast in the Korean voiceless obstruents. The first aspect is speech production, including VOT (Voice Onset Time) and F0 (fundamental frequency). The second aspect is speech perception, including the factor of the pronunciation of Korean learners. Generalizing from the results of Perception Test 1 and 2, adult learners of a foreign language seem to exhibit a correlation between articulation and auditory perception. Perception Test 3 shows how both Korean and Chinese participants can use F0 and VOT values as the major factors in distinguishing three-way contrast stop consonants in Korean.

고삼 수집종의 생육특성, 주요성분 및 항산화 활성

권아름,김선익,성봉재,지무근,이가순,김현호,도은수 한국약용작물학회 2020 한국약용작물학회지 Vol.28 No.5

Background: Sophora flavescens AIT root is used as a herbal medicine in Asian culture. This study was aimed at selecting the best cultivars, by comparing growth characteristics, active ingredients, and antioxidant activities. Methods and Results: A total twenty nine accessions of S. flavescens were collected from five different regions in Korea. Plant height, leaf length, peduncle length, fresh root weight, and seed weight were the growth characteristics selected. Antioxidant activity was determined by measuring the total polyphenol (TPC) and total flavonoid contents (TFC) as well as the radical scavenging activity of DPPH, ABTS and FRAP. Oxymatrine and matrine, active ingredients in S. flavescens were analyzed by HPLC. Results indicated that accession YS-11 had the highest plant height (152.5 ㎝) and peduncle length (54.0 ㎝). The fresh root weight was highest in JA-01 at 4.9 kg, while the highest total seed weight was recorded in accession BH-04 at 77.7 g. The YS-03 accession contained the highest oxymatrine and matrine total contents (0.9616% and 0.9638%, respectively). Accessions BH-02, YS-11, YS-05, and MJ-03 had the highest levels of antioxidant activity (p < 0.05). Oxymatrine showed a high correlation with TPC and FRAP. TPC showed high correlations with TFC, DPPH, ABTS and FRAP. TFC showed a high correlation with DPPH. Conclusions: The superior lines can be selected for use as standard variety breeding material by comparing the growth characteristics of the accessions.