휴대전화 단말기 교체 예측을 위한 모바일 인터넷 행동 분석

류성일(Sungil Ryu),박선주(Sunju Park) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.6

황강의 저서성 대형무척추동물의 군집구조에 관한 연구

류성만,전영태,이종욱,차진열 嶺南大學校 基礎科學硏究所 1997 基礎科學硏究 Vol.17 No.-

The present study was conducted to determine the community structure in Whang river based on the benthic macroinvertebrates. The survey area included eight sites in Whang river and two sites in Nakdong river and the study was carried out from March of 1995 to February of 1996. The result are as follows; (1) Benthic mactoinvertebrates are composed of a total of 200 species including 114 genera, 71 families, 21 orders, 7 classes in five phyla. A total of 200 species was found in Whang river, however only 66 species were recorded in Nakdong river. 2) Species frequency was different depending on the study area. It ranged from 84-112 species in the upper stream(site 1 to 6) to 71-75 species in the lower stream(site 7 to 8) and 41-58 species in the Nakdong river(site 9 to 10). Taxa with highest species frequency were aquatic insecta. 3) Average number of individuals was 1656.5/0.5㎡ in the whole study aera. Inividual number was variable from 53/0.5㎡ at the site 8 to 296.8/0.5㎡ at the site 4. Taxa with highest individual species frequency were aquatic insecta. 4) Trichoptera and Ephemeroptera were dominant in upper stream, while Chironomidae was the most aboundant group in the lower stream. 5) Average dominance(DI), species richness(RI), species diversity(H'), and evenness(J') were 0.68, 2.71, 3.10 and 0.71, respectively, in the whole study area. The biotic indices in Whang river were relative higher than that of Nakdong river. 6) Functional feeding groups were collectors and shredder at site 1 to 6, filterer at site 7 to 10.

한국산 나비목(Lepidoptera)의 발향린(Androconia)에 관한 주사 전자현미경적 연구 Ⅰ. 뱀눈나비과

이종욱,차진열,류성만 嶺南大學校附設 基礎科學硏究所 1988 基礎科學硏究 Vol.8 No.-

한국산 Satyridae 에서 보고된 35종 중 북한산 11종과 채집하지 못한 3종을 제외한 21종을 재료로 광학현미경으로 발향린의 유무 및 분포를 확인하였다. 이중 발향린이 관찰된 9종을 대상으로 주사전자현미경으로 그 형태를 비교 연구하였다. 1. 발향린이 관찰된 종은 Coenonympha ammaryllis Cramer, Erebia wanga Bremer, Eumenis antonoe Esper, Lopinga achine Scopoli, Minois dryas Scopoli, Pararge deidamia Eversmann, Ypthima argus Buttler, Ypthima amphithea Menetries, Ypthima mojschulsk Bremer et Grey 9종 이었다. 2. 발향린은 암컷에서는 발견되지 않았고 수컷의 앞·뒷날개 표면(dorsal surface)에서 관찰되었다. 3. 발향린의 분포는 주로 앞날개의 둔맥과 경맥사이, 뒷날개는 주맥을 중심으로 분포하였으며, 종에 따라서 상당한 차이를 보였다. 4. Satyridae 9종의 발향린은 나발막(fimbriae), neck, 잎새(laminar), 자루병반(foot stalk)등을 갖추었으나, 부속반(accessory disk)은 가지지 않았다. 5. Satyridae 9종의 발향린은 같은 종 내의 다른 개체간, 부위에 따른 변이는 관찰되지 않았다. 6. 발향린의 성유인 물질의 분비는 샘(gland)의 생성물이 자루병반의 강(cavity)내로 들어가서 잎새(laminar), neck, 나발막(fimbrae)의 말단개구부등 발향린 전면에 걸쳐있는 구멍(pore)을 통해 분산되는 것으로 여겨진다. This paper observed through microscope the existance and the distribution of the androconia of the 21 species of Satyride among 35 ones which have been reported in Korea, excluding 11 species in north Korea and 3 one's not in collection. 9 species which were observed the androconia among these were chifely compared and studied through Scanning Electron Microscope. 1. The species observing androconia are ? Coenonympha ammaryllis Cramer, Erebia wanga Bremer, Eumenis antonoe Esper, Lopinga achine Scopoli, Minois dryas Scopoli, Pararge deidamia Eversmann, Ypthima argus Buttler, Ypthima amphithea ? Menetries, Ypthima mojschulsk Bremer et Grey. 2. The androconia was not found at the females, but only at the dorsal surface of the fore and hind wings of males. 3. The androconia was mainly distributed between the anal vein and the radius of the fore wings and at the cubitus of the hind wings, and made differences among the species. 4. The androconia of 9 species Satyridae fimbriae, nack, laminar,foot stalk, but no accessory disk. 5. The androconia of 9 species Satyridae was observed no variation at the sections and among the inviduals of the same species. 6. The secretion of the sexual attractant at the androcnia was through to be diffused into the pores at the surface of the androconia of laminar, neck, and fimbriae through the cavirty of the foot stalk of the gland.

회천의 저서성 대형무척추동물에 의한 생물학적 수질 평가에 관한 연구

차진열,이종욱,류성만 嶺南大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.16 No.-

The present study was carried out to determine the water quality based on the biological evaluation of water pollution in Hoe Stream. The survey was carried out through the whole Hoe stream(sites 1-9), and two sites in Nakdong River(site 10,11), meeting before and after Hoe Stream from March, 1995 to February, 1996. The results are as follow; (1) Benthic macroinvertebrates in present study are composed of total 200 species, 115 genrea, 68 families, 21 orders, 7 classes in 5 phyla and among them, Aquatic insects are composed of 171 species, 91 genera, 52 families in 9 orders. According to comparison of Hoe Stream and Nakdong River, benthic macroinvertebrates in Hoe Stream are composed of total 199 species, 114 genera, 67 families, 20 orders, 7 classes in 5 phyla, and in Nakdong River are composed of total 44 species, 28 genera, 25 families, 13 orders, 6 classes in 3 phyla. (2) The dominant species were investigated as Trichoptera and Ephemeroptera in upper reaches, and Chironomidae in lower reaches. (3) The diversity indices are 2.154∼3.619, and it means, that in Hoe Stream appeared higher value than in Nakdong River. (4) Conclusively, almost all factors of water quality in present study was one to four levels. Hoe Stream showed one to three levels and appeared four level in Nakdong River.

삼천지의 환경과 생물다양성 II. 곤충상

류성만,최원영,이미경,이종욱 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

저자들은 1992년 9월20일부터 1992년 11월 7일까지 경상북도 경산시 영남대학교 교내에 위치한 삼천지에 대한 곤충상을 조사하였다. 연구 결과 총 8目 56科 121屬 132種이 서식하고 있는 것으로 밝혀졌다. We studied insect fauna in the Samchun-impoundment during the period of from september 20, 1992 to November 7, 1992. The total number of insect taxa are composed of 132 spceies, 121 genera, 56 families, 8 orders including this examination.

단일 어린이병원에서 수혈이상반응의 분석 경험

류성은,이현지,신지현,신경화,유동원,김형회,장철훈 대한수혈학회 2022 大韓輸血學會誌 Vol.33 No.3

Adverse transfusion reactions (ATRs) are unexpected reactions to transfusion. This study examined the frequency, types of ATRs, and related blood products retrospectively in pediatric patients with less information than in adult patients. Four hundred and forty transfusions were performed for two months at a children’s hospital: 247 units of red blood cell (RBC) products, 142 units of platelet products, and 41 units of fresh frozen plasma (FFP) were used. Five adverse reactions occurred in five patients, three cases were allergic reactions, and two were febrile nonhemolytic reactions. The frequency was 1.13%, and apheresis platelets and leukocyte-reduced RBC were transfused. Two patients’ ATRs were found in the previous transfusions, and ATRs were repeated in subsequent transfusions in one patient. One of the ATRs was not reported to the blood bank and was then discovered during the study. Because pediatric patients may have limitations in recognizing or expressing their symptoms compared to adults, medical staff rely solely on vital signs and laboratory results rather than symptoms, causing difficulty in noticing ATRs. Information on ATRs and education on appropriate blood products will improve awareness of ATRs and blood management among medical staff at transfusion sites and blood banks. (Korean J Blood Transfus 2022;33:171-177)

Hard-example Mining과 Augmentation 최적화를 이용한 위험 상황 탐지 및 소통 서비스

류성은(Ryu Seong Eun),구병국(Koo Byung Kook),성기승(Seong Ki Seung),강민정(Kang Mi Jung),김민지(Kim Min Ji) 한국정보기술학회 2021 Proceedings of KIIT Conference Vol.2021 No.6

자녀와 부모간의 소통 부재 문제는 시간이 흘러갈수록 쉽게 해결되지 않는다. 또한 주거상의 물리적 차이로 인해 자녀는 부모의 위험 상황을 인지하기 힘들다 본 논문에서는 실내에서 발생할 수 있는 부모의 위험 상황 탐지와 스냅톡을 이용한 소통 증진 장려 애플리케이션을 제안한다. 이는 Hard-example mining과 Augmentation 정책 최적화를 사용한 딥러닝 기반의 학습 모델을 통해 위험 상황을 효과적으로 탐지한다. Firebased Cloud Messagingd을 이용하여 탐지된 위험 상황을 알리고 채팅 기능을 제공하는 애플리케이션 API 서버를 구축한다. 자녀는 간단한 사진 전송과 코멘트 기능을 제공하는 스냅톡 서비스를 통해 부모의 안전을 간단히 확인하고 소통을 위한 환경을 제공받는다. The problem of lack of communication between grown up child and parents is not easily solved over time. In addition, physical differences in housing make it difficult for grown up child to recognize the risk situation of their parents. In this paper, we propose an application that encourages communication enhancement using SnapTalk and detection of parental risk situations that can occur indoors. This effectively detects risk situations through deep learning-based learning models using hard-example mining and Augmentation policy optimization. We build application API server that informs detected risk situations and provides chat functionality using Firebase Cloud Messaging system. Grown up child is provided with an environment for simple verification and communication of their parents" safety through SnapTalk service, which provides simple photo transmission and commenting functions.

뉴스 기사의 정치적 성향 판단을 위한 지식 그래프 임베딩 기법의 효과 분석

류성은 ( Seongeun Ryu ),고윤용 ( Yunyong Ko ),김상욱 ( Sang-wook Kim ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.1

서비스 로봇산업의 경제적 파급효과

류성은,정인재 한국산업경영시스템학회 2023 한국산업경영시스템학회 학술대회 Vol.2023 No.춘계

도로 위험 탐지를 위한 데이터 편향성 최적화 기반 연관 추론 모델

류성은,김현진,구병국,권혜정,박찬홍,정경용,Ryu, Seong-Eun,Kim, Hyun-Jin,Koo, Byung-Kook,Kwon, Hye-Jeong,Park, Roy C.,Chung, Kyungyong 한국융합학회 2020 한국융합학회논문지 Vol.11 No.9

본 연구에서는 도로 위험 탐지를 위한 데이터 편향성 최적화 기반 연관 추론 모델을 제안한다. 이는 사용자의 개인적 특성과 주변 환경 데이터를 수집하고 교통사고 방지 서비스를 제공하기 위한 연관분석 기반의 마이닝 모델이다. 이는 다양한 상황 변수들로 구성된 트랜잭션 데이터를 생성한다. 생성된 정보를 바탕으로 연관 패턴 분석을 통해 각 트랜잭션 내 변수들의 유의미한 연관관계를 도출한다. 분류된 범주형 데이터의 편향성을 고려하여 최적화된 지지도 및 신뢰도 값으로 가지치기를 진행한다. 추출된 상위 연관규칙을 바탕으로 사용자에게 개인 특성과 주행 도로 상황에 대한 위험 탐지모델을 제공한다. 이는 데이터 편향성 문제를 극복하고 데이터간 연관성을 고려하여 잠재적인 도로 사고를 예방하는 교통 서비스가 가능하다. 성능 평가는 제안하는 방법이 정확도에서 0.778, Kappa 계수에서 0.743로 우수하게 평가된다. In this study, we propose an association inference model based on data bias optimization for road hazard detection. This is a mining model based on association analysis to collect user's personal characteristics and surrounding environment data and provide traffic accident prevention services. This creates transaction data composed of various context variables. Based on the generated information, a meaningful correlation of variables in each transaction is derived through correlation pattern analysis. Considering the bias of classified categorical data, pruning is performed with optimized support and reliability values. Based on the extracted high-level association rules, a risk detection model for personal characteristics and driving road conditions is provided to users. This enables traffic services that overcome the data bias problem and prevent potential road accidents by considering the association between data. In the performance evaluation, the proposed method is excellently evaluated as 0.778 in accuracy and 0.743 in the Kappa coefficient.