섬서구메뚜기에 대한 38종 약제의 감수성 평가

이유노,정진우,김세윤,이서영,석승주,김길하 한국농약과학회 2022 한국농약과학회 학술발표대회 논문집 Vol.2022 No.11

팬데믹 기간 Messenger 애플리케이션 리뷰 변화를 통한 서비스 전략 분석

이유나(YuNa Lee),노미진(Mijin Noh),김양석(YangSok Kim),한무명초(MuMoungCho Han) 한국스마트미디어학회 2023 스마트미디어저널 Vol.12 No.6

COVID-19 팬데믹 영향으로 대면 소통이 어려워지면서 비대면 소통의 영향을 파악하는 연구가 진행되고 있으나 메신저 애플리케이션 리뷰를 통해 이를 살펴본 연구는 미비하다. 본 연구는 구글 플레이 스토어 내의 메신저 애플리케이션 리뷰 데이터를 수집하여 LDA(Latent Dirichlet Allocation)토픽 모델링을 통해 팬데믹의 영향을 파악하고, 이에 따른 서비스 전략 방안을 제시하고자 한다. 연구에서는 팬데믹이 시작된 시점과 사용자가 부여한 평점을 기준으로 데이터를 분류하였다. 분석 결과 주로 중장년층이 메신저를 사용하는 것으로 나타났으며, 팬데믹 이후에는 가족과의 소통이 증가한 것으로 확인되었다. 사용자들은 애플리케이션의 업데이트에 대해 불만을 표현하였으며, 변화에 대한 적응이 어려움을 보였다. 이에 업데이트 주기를 조정하고 사용자들의 의견을 적극 수용하는 개발 접근이 필요하다. 또한, 직관적이고 간편한 사용자 인터페이스(UI)를 제공한다면 사용자 만족도를 향상시킬 수 있을 것으로 기대된다. As face-to-face communication has become difficult due to the COVID-19 pandemic, studies have been conducted to understand the impact of non-face-to-face communication, but there is a lack of research that examines this through messenger application reviews. This study aims to identify the impact of the pandemic through Latent Dirichlet Allocation (LDA) topic modeling by collecting review data of 메신저 applications in the Google Play Store and suggest service strategies accordingly. The study categorized the data based on when the pandemic started and the ratings given by users. The analysis showed that messenger is mainly used by middle-aged and older people, and that family communication increased after the pandemic. Users expressed frustration with the application's updates and found it difficult to adapt to the changes. This calls for a development approach that adjusts the frequency of updates and actively listens to user feedback. Also, providing an intuitive and simple user interface (UI) is expected to improve user satisfaction.

유아특수교육에서의 질적 연구 동향 분석

노진아(Noh Jina),이윤숙(Lee Yun Suk),강미애(Kang Mi Ae),박동환(Park Dong Hwan),이유리(Lee Yu Ri) 이화여자대학교 특수교육연구소 2011 특수교육 Vol.10 No.1

본 연구는 유아특수교육과 관련된 국내 전문학술지 논문의 질적 연구 동향을 분석함으로써 우리나라의 유아특수교육 분야에 나타난 질적 연구 동향을 파악하고 앞으로의 연구 방향성을 제시하고자 하였다. 이를 위해서 유아특수교육 관련 학술지 10편에 발표된 2000년부터 2010년 6월까지의 유아특수교육 관련 논문 총 52편을 최종적으로 선정하여 분석하였다. 최종 선정된 논문들은 연도별ㆍ학회지별, 연구주제별, 연구방법별로 분석되었다. 연구결과 국내의 유아특수교육 분야에서의 질적 연구는 유아특수교육연구 학술지를 중심으로 확장되었으며, 통합교육과 관련한 주제에 대해서 많은 연구가 이루어졌으며, 교사와 부모를 대상으로 한 면담연구가 많이 이루어지고 있었다. 그리고 신뢰도 및 타당도 검증방법에 대한 관심도 증가하면서 질적 연구의 질을 높이려는 노력도 증가하고 있었다. 마지막으로 본 연구에서 조사된 연구결과를 중심으로 앞으로의 유아특수교육 분야에서의 질적 연구의 미래 방향성 등을 논의하였다. The purpose of this study was to analyze qualitative research trends and to explore implications for future qualitative research in early intervention/early childhood special education(EI/ECSE) in Korea. A total of 52 qualitative research papers in 10 peer-reviewed journals from 2000 to 2010 years were selected and analyzed. These papers were analyzed in terms the year of publication, published journals, research topics, and research method. Results indicated that qualitative research had increased especially in the journal of early childhood special education, inclusive education topics had been explored mostly, interviews with teachers and/or parents had been conducted mostly. In addition, efforts to improve the quality of qualitative research had been made with the increased interest in reliability and validity. Based on these results, we discussed and explored implications for future studies on qualitative research of early intervention/early childhood special education.

수영만의 퇴적물 및 중금속 분포에 관한 연구

이유대,노영재 한국지구과학회 1991 韓國地球科學會誌 Vol.12 No.4

This paper reports on the investigation of the distributions of sediments and heavy metals in Sooyoung River and its mouth, carried out during the period from July 1990 and August 1991. Since the samples were saline, water analysis was performed by the method of alkaline KMnO₄ and sediment analysis by acidic KMnO₄. Mercury was digested with both nitric and sulfuric acids, and then determined by dithizone CCl4 method. Cadmium, Zinc, Copper, Lead and Chronium were determined by atomic absorption spectroscopy after aliquots of samples were digested with nitric acid and hydrogen peroxide. Mineral components of sediments were identified by XRD and microscopic analysis. The result are as follows : 1. The ranges of COD of water and sediments were 10.6-54.6ppm and 63-26000ppm respectively. 2. The ranges of concentrations of Cadmium, Lead, Copper and Zinc for water were 0.002 -0.024ppm, 0. 013-0.060ppm, 0.013-0.736ppm, 0.003-0.012ppm, respectively. 3. The ranges of concentration of Mercury, Cadmium, Lead, Copper, Zinc and Chromium for sediments were N.D - 0.09ppm, 0 .1-2.07ppm, 0.32-5 2.35 ppm, 1.04 - 20.67 ppm, 7.1-52.50 ppm and 0.23-5.22 ppm, respectively. 4. The mineral components of the sediments were mainly quartz and feldspar.

스마트 관광 활성화를 위한 트립어드바이저 애플리케이션 리뷰 분석 : 토픽 모델링을 중심으로

이유나,한무명초,유선영,소미기,김양석,노미진 (사)한국스마트미디어학회 2023 스마트미디어저널 Vol.12 No.8

The development of information and communication technology and the improvement of the development and dissemination of smart devices have caused changes in the form of tourism, and the concept of smart tourism has since emerged. In this regard, researches related to smart tourism has been conducted in various fields such as policy implementation and surveys, but there is a lack of research on application reviews. This study collects Trip Advisor application review data in the Google Play Store to identify usage of the application and user satisfaction through Latent Dirichlet Allocation (LDA) topic modeling. The analysis results in four topics, two of which are positive and the other two are negative. We found that users were satisfied with the application's recommendation system, but were dissatisfied when the filters they set during search were not applied or that reviews were not published after updates of the application. We suggest more categories can be added to the application to provide users with different experiences. In addition, it is expected that user satisfaction can be improved by identifying problems within the application, including the filter function, and checking the application environment and resolving the error occurring during the application usage.

水營川 底質의 重金屬 分布

김경희,이유대,김정진,노영재 부산대학교 환경문제 연구소 1988 環境硏究報 Vol.6 No.-

Distribution of heaty metals in water and the sea-bottom mud in Su-yeong bay was studied. The mud and water sample were collected in Jan. and Jul. in 1988. COD values for water determired alkali method and mud were determined by acid method. Mercury was digested with nitric acid, and sulfuric acid and determined by dithiazone-CCI₄method. Cadmium, Zinc, Copper, Lead, Chronium were digested with nitric acid and hydrogen peroxide and analyzed using atomic absorption method. Also, the composition of mud was determined by XRD analysis microscope. The results were as follows. 1.The ranges of water and mud COD values were 10.60~54.60ppm, 63~75ppm. 2.The ranges of values of cadmium, lead, copper, zinc and chronium for water 0.003ppm, 0.03ppm, 0.347ppm 0.007ppm on the average. 3.The ranges of values of mercury, cadmium, lead, copper, zinc and chronium for mud were N.D,0.332ppm, 15.28ppm, 9.10ppm, 27.20ppm, 2.70ppm on the average. 4.The sea-bottom mud was composed of Quartz and Feldspar mainly. 5.Generally, the 2nd examination test results were showed lower contamination than 1st results.

살충제 저항성 목화진딧물에 대한 afidopyropen과 chlorfenapyr, cyantraniliprole의 혼합효과 평가

강동현,이유노,문하현,김세은,구현나,김현경,김길하 한국응용곤충학회 2024 한국응용곤충학회지 Vol.63 No.1

살충제 저항성 목화진딧물 집단(완주, 춘천, 고성)에 대한 3종(afidopyropen, chlorfenapyr, cyantraniliprole) 약제별 감수성과 혼용에 따른 방제 효과를 평가하였다. 3개 야외집단에 대해서 3약제 모두100배 이상의 저항성비를 보였다. 혼합제의 협력작용을 평가하기 위해 반수치사농도(LC 50 ) 을 이용한 조합지수(CI), %M (synergism) , 연합독성계수(CTC), 와들리 비율(WR), 상승비율(SR)와 사충률을 이용한 아보트 비율(AR)로 비교하였다. Afidopyropen + chlorfenapyr은 모든 야외집단에 대해서 살충활성의 증가를 보였고, chlorfenapyr + cyantraniliprole, afidopyropen + cayntraniliprole은 완주, 춘천 집단에 대해서 살충활성의 증가를 보였다. 그러나 chlorfenapyr + cyantraniliprole (CI, 1.63; %M (synergism) , 30; CTC, 64.0; WR, 0.6, AR, 0.54)과 afidopyropen + cyantraniliprole (CI, 6.7; %M (synergism) , 1; CTC, 19.8; WR, 0.2, AR ≤ 0.55)은 고성 집단에 서 길항작용을 나타내었다. 포장조건에서도 afidopyropen + chlorfenapyr, chlorfenapyr + cyantraniliprole, afidopyropen + cyantraniliprole 은 99% 이상의 높은 방제가를 보여 향후 살충제 저항성 목화진딧물 방제용 혼합제 개발에 유용하게 활용될 것이다. The susceptibility of Aphis gossypii populations collected from three fields (WJ, CC, and GS) was evaluated to three insecticides (afidopyropen, chlorfenapyr and cyantraniliprole) and three binary mixtures. Three field populations showed resistance ratios of over 100 to all insecticides. The Combination Index (CI), %M (synergism) , Co-Toxicity Coefficient (CTC), Wadley Ratio (WR), Synergism Ratio (SR) and Abbott Ratio (AR) were used to evaluate combined effect of the insecticides. Afidopyropen + chlorfenapyr (CI ≤ 0.16; %M (synergism) ≥ 94; CTC ≥ 764.5; WR ≥ 6.4; SR ≥ 6.9 and AR ≥ 1.1) showed a synergism in all filed populations. WJ and CC populations showed a synergism in all binary mixtures of insecticides, but GS population showed an antagonism for chlorfenapyr + cyantraniliprole (CI, 1.63; %M (synergism) , 30; CTC, 64.0; WR, 0.6 and AR, 0.54) and afidopyropen + cyantraniliprole (CI, 6.7; %M (synergism) , 1; CTC, 19.8; WR, 0.2 and AR ≤ 0.55). All mixtures (afidopyropen + chlorfenapyr, chlorfenapyr + cyantraniliprole and afidopyropen + cyantraniliprole) showed a control value of over 99% after 21 days of treatment in the field. This study highlights that binary mixtures of three insecticides serve as an effective control strategy for A. gossypii.

국내 목화진딧물 지역집단의 11 개 살충제 감수성 평가

강동현,이유노,김세은,문하현,김세윤,정진우,구현나,김현경,김길하 한국농약과학회 2023 농약과학회지 Vol.27 No.3

The susceptibility of 11 commercial insecticides against Aphis gossypii adults collected from 13 cucumber fields and nine pepper fields was evaluated. The mortality of the insecticides at the recommended concentration varied depending on the A. gossypii population in each region. Most of the insecticides except sulfoxaflor (63.8% in Gongju and 80.9% in Hamyang, respectively) showed over 90% mortality at each insecticide treatment in A. gossypii populations from cucumber fields. A. gossypii populations collected from the pepper fields showed over 90% mortality except for 3 regions (87.8% in Incheon, 53.6% in Cheongju, 72.4% in Cheonan) when treated with λ-cyhalothrin. The lethal concentrations (LC50 and LC90) of insecticides in each A. gossypii population were obtained and the resistance ratio (RR) and control efficacy index (CEI) were calculated. Hoengseong population collected from the cucumber field showed RR value of  1.0 in all insecticides except dinotefuran, and the Gyeongju population showed RR values of < 1.0 and CEI value of < 0.0004 for sulfoxaflor. The Cheonan population collected from the pepper field showed lower RR and CEI values for pyrifluquinazon, afidopyropen, and flonicamid than laboratory susceptible strain. In the box-and- whisker plot to compare the mortality of populations according to the crop fields, sulfoxaflor showed the least variation in cucumber field and imidacloprid showed the least variation in pepper fields. As a result, this study will be helpful as basic data for effective control of A. gossypii through continuous monitoring.

2종 모기를 이용한 공간형 기피제 평가 시험법 개발

엄태일,이유노,강열규,석승주,전종찬,김현경,김길하 한국농약과학회 2022 농약과학회지 Vol.26 No.2

공간형 기피제의 효율적인 평가를 위한 실내시험법 (in vitro method)과 실외시험법 (semi-field method)을 개 발하고자 하였다 . 기본적으로 모기와 인체의 접촉을 차단하여 안전성을 확보하고 실질적으로 물질의 효과를 확인할 수 있도록 하였다 . 실내시험법은 기존의 시험법을 변형하고 직접적인 인체접촉을 피하여 단시간안에 물질의 활성을 평가할 수 있는 방법으로 개발하였다 . 실외시험법의 경우 , 공간형 기피제의 특성상 야외에서 사용이 되므로 공간적인 요인과 시간적인 요인을 고려하여 실험할 수 있도록 하였다 . 특히 , 인체접촉을 피하기 위하여 유인요인으로 쥐와 드 라이아이스 , 젖산 등을 이용하여 안전하며 효과적으로 평가할 수 있도록 개발하고자 하였다 . 따라서 본 실험은 흰줄 숲모기 (Aedes albopictus)와 빨간집모기 (Culex pipiens)를 이용하여 개발된 평가방법의 이용가능성을 탐색하고자 하 였다 .

복숭아혹진딧물 야외개체군의 λ-cyhalothrin, imidacloprid, 그리고 flupyradifurone에 대한 저항성 모니터링과 점 돌연변이 분석

문하현,이유노,강동현,김세은,김현경,구현나,김길하 한국응용곤충학회 2024 한국응용곤충학회지 Vol.63 No.1

복숭아혹진딧물(Myzus persicae)은 다식성으로 담배, 감자, 고추, 배추, 복숭아 등에 심각한 피해를 입히는 대표적인 농업해충이다. 본 연구에 서는 국내 복숭아혹진딧물 야외개체군의 λ-cyhalothrin, imidacloprid 및 flupyradifurone에 대한 약제 저항성 발달 수준과 점 돌연변이(R81T, L1014F, M918L)의 발생 여부를 확인하였다. 또한, qRT-PCR을 통해 사이토크롬 P450 유전자인 CYP6CY3 발현량을 확인하였다. 그 결과, λ -cyhalothrin은 저항성비(Resistance Ratio, RR)가 12개 모든 지역이 > 200으로 높은 저항성을 보였다. Imidacloprid와 flupyradifurone은 YS, UR, HY, 그리고 WJ 개체군에서 > 200의 저항성비로 높은 저항성을 나타냈다. R81T는 12개 집단 중 약 50%, L1014F는 약 33.3%, M918L은 100%에서 발현하였다. 또한 qRT-PCR을 통해 imidacloprid 저항성 개체에서 subunit CYP6CY3의 발현량이 높게 나타난 것을 확인하였다. 이러 한 결과는 M918L 점 돌연변이는 λ-cyhalothrin 저항성 진단마커로, R81T와 CYP6CY3의 높은 발현은 imidacloprid 저항성 진단마커로 활용이 가능하다는 것을 시사한다. The green peach aphid, Myzus persicae is a representative agricultural insect pest that is polyphagous and causes serious damage to tobacco, potatoes, peppers, cabbage, and peaches. In this study, we analyzed the level of development of insecticide resistance to λ-cyhalothrin, imidacloprid, and flupyradifurone and the point mutations (R81T, L1014F, M918L) in 12 field populations of M. persicae. In addition, the expression level of CYP6CY3, a cytochrome P450 gene, was analyzed through qRT-PCR. As a result, λ -cyhalothrin showed high resistance ratio (RR) of > 200 in all 12 populations. Imidacloprid and flupyradifurone showed high RR of >200 in YS, UR, HY, and WJ populations. The R81T was detected in approximately 50%, L1014F in approximately 33.3%, and M918L in 100% of the 12 populations. Additionally, the expression level of subunit CYP6CY3 was highest in imidacloprid-resistant population (YS). These results suggest that M918L point mutation can be used as λ-cyhalothrin-resistance molecular diagnostic and R81T point mutation and the high expression of CYP6CY3 can be used as imidacloprid-resistance molecular diagnostic markers.