http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
광주 지역 소아청소년에서 알레르기비염 유병률과 주요 알레르겐 조사
권성은 ( Sung Eun Kwon ),임대현 ( Dae Hyun Lim ),김정희 ( Jeong Hee Kim ),손병관 ( Byong Kwan Son ),박윤성 ( Yoon Sung Park ),장해지 ( Hae Ji Jang ),김병희 ( Byung Hee Kim ),김근모 ( Geun Mo Kim ),유용상 ( Yong Sang Yoo ),박기원 ( 대한천식알레르기학회 2015 Allergy Asthma & Respiratory Disease Vol.3 No.1
Purpose: Allergic rhinitis (AR) is one of the most common childhood diseases in Korea. In this study, we aimed to investigate the prevalence and allergens of childhood AR in Gwangju. Methods: From April 2013 to September 2013 in Gwangju, skin prick test and questionnaire survey were performed targeting 2,330 children in total (350 kindergartners, 930 elementary school students, 589 middle school students, and 461 high school students). Results: The overall prevalence of AR was 23.5% (female 21.3%, male 26.1%). According to age groups, prevalence of AR was 14.9% (female 10.7%, male 19.8%) in kindergartners, 24.5% (female 18.8%, male 29.4%) in elementary school students, 23.3% (female 18.1%, male 27.6%) in middle school students, 26.2% (female 27.7%, male 23.2%) in high school students. The most common allergen was Dermatophagoides pteronyssinus (79.7%), followed by Dermatophagoides farina (72.2%), birch (14.0%), alder (12.0%), Japanese hop (9.2%), Alternaria (8.9%), cat fur (7.2%), Japanese cedar (6.9%), ryegrass (6.6%), willow (6.0%), pine (5.4%), oak (4.9%), mugwort (4.3%), orchard grass (4.0%), sheep fescue (3.7%), fat hen (3.4%), ragweed (3.4%), and maple (3.4%).Conclusion: This research figures out the prevalence and the detailed allergens of AR in Gwangju children. We suggest that more vegetation data of Japanese cedar should be surveyed in recent future.
미디어 레퍼토리를 이용한 스마트폰 애플리케이션 이용 패턴 유형 분석
권성은(Sung Eun Kwon),장서인(Shu In Jang),황보현우(Hyunwoo Hwangbo) 한국전자거래학회 2021 한국전자거래학회지 Vol.26 No.4
현대인에게 가장 보편적이고 융합적인 미디어인 스마트 폰은 애플리케이션이라는 비히클을 갖는 뉴미디어이다. 이 연구는 미디어 사용자들은 어떻게 레퍼토리를 구성하여 미디어를 이용하고 있는지를 파악하고자 2019년 11월, 4주 동안의 개인별 모바일 이용행동 로그 데이터를 이용하여 모바일 애플리케이션 카테고리별 미디어 이용량을 중심으로 군집 분석을 실시하고, 최종적으로 8개의 모바일 미디어 레퍼토리 유형별 집단을 분류하였다. 8개의 각 미디어 레퍼토리 그룹은 애플리케이션 카테고리별 절대적 이용량과 타 그룹 대비 상대적 이용량에서 차이를 보였으며, 데모그라픽적 분포에서도 집단간 차이를 보였다. 이 연구는 모바일 미디어 레퍼토리를 규명해 냈다는 학문적 기여뿐만 아니라 기존의 k-means clustering에 의존적이었던 군집 분석을 SOM(Sefl-Organized Map)을 이용하여 프로토벡터를 추출하고 이 프로토벡터를 이용하여 k-means clustering을 실시하는 이단계 접근법(two-step approach)을 시도함으로써, 기존 k-means clustering이 갖고 있는 ‘이상치(outlier)’나 ‘결측치’에 민감했던 한계점을 극복하고 더 나은 성능의 분석 결과를 도출하고 있음을 보여준다는 점에서 방법론적으로도 의미를 갖는다. 또한 모바일 미디어 이용 행동의 유형 분류 연구는 전자거래 서비스를 이용하는 고객을 유형분류하고, 각 고객 유형에 맞는 고객 관리 서비스를 집행해야 하는 실무진이 고객 행동 로그 데이터를 기반으로 고객의 구조를 파악하고 각 고객 집단에 적합한 서비스 또는 마케팅 의사결정을 차별적으로 집행해야 하는 전자거래 커뮤니티에 실무적 가이드를 제공한다는 점에서도 의미를 갖고 있다. Today smart phone is the most common media with a vehicle called ‘application’. In order to understand how media users select applications and build their repertoire, this study conducted two-step approach using big data from smart phone log for 4 weeks in November 2019, and finally classified 8 media repertoire groups. Each of the eight media repertoire groups showed differences in time spent of mobile application category compared to other groups, and also showed differences between groups in demographic distribution. In addition to the academic contribution of identifying the mobile application repertoire with large scale behavioral data, this study also has significance in proposing a two-step approach that overcomes ‘outlier issue’ in behavioral data by extracting prototype vectors using SOM (Sefl-Organized Map) and applying it to k-means clustering for optimization of the classification. The study is also meaningful in that it categorizes customers using e-commerce services, identifies customer structure based on behavioral data, and provides practical guides to e-commerce communities that execute appropriate services or marketing decisions for each customer group.
김재학,권성은,이승재,Kim, Jae-Hak,Kwon, Sung-Eun,Lee, Seung-Jae 한국군사과학기술학회 2012 한국군사과학기술학회지 Vol.15 No.3
In the study, corrosion characteristics of AZ31 magnesium alloy under various environments exposed during machining(immersion in cutting oil, 5 % cutting oil aqueous solution and distilled water & contact with dissimilar metals, SPC4 and A5052-H32) were investigated. A corrosion test was performed AZ31 magnesium alloy was immersed in each electrolyte solution after contacting with each dissimilar metals, and the results were observed by an electron microscope. In immersion tests, corrosion of AZ31 magnesium alloy showed to be in the sequence of distilled water> 5 % cutting oil aqueous solution> cutting oil> air, and in the test of contact with dissimilar metals, corrosion showed to be in the sequence of SPC4> A5052-H32> AZ31. It can be concluded that to prevent corrosion during machining, AZ31 magnesium alloy must prevent contacting water and use magnesium alloy for raw material of Jig & Fixture.
뒷좌석 승객 보호를 위한 성능 평가 및 개선 방안에 대한 연구
최현진(Hyun-jin Choi),고진(Jin Ko),권성은(Sung-Eun Kwon) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2
The seat submarine phenomenon is considered as one of the important causes increasing the front-seat occupant injury in the frontal impact crash. So, anti-submarine bar or anti-sliding airbag has been implemented to prevent the seat-submarine. However, due to lack of the regulation and requirement, the study and development of the submarine effect was not well studied for a rear-seat. The rear-seat occupant protection device almost has been using 2-point or 3-point a seat belt. When the rear-seat occupant protection performance is evaluated in frontal impact sled test using all dummies, especially the injury value of a small size dummies is not good. The reason is a seat submarine, which would bring rupture of the abdomen. There are some major factors affecting seat submarine such as the seat belt webbing length & elongation, the buckle guide line angle and the seat cushion materials etc. In this paper, we will discuss the evaluation method. And also, discuss the submarine improvement, controlling antisubmarine bar and buckle line route etc., in a sled test with FMVSS 208 generic corridor.
BioRID-Ⅱ를 이용한 저속 후방 충돌시 편타성 상해 연구
신현학(Hyun-Hack Shin),최현진(Hyun-jin Choi),이재우(Jae-Woo Lee),권성은(Sung-Eun Kwon) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
It has been discussed one of the most important motor accidents to whiplash injury due to the low speed rear-end collision. Whiplash injury is one of injuries caused by automotive rear-end impacts, but occupies much frequency of occurrence and the high cost for treatments. For these reason, the test procedures and the evaluation criteria of seats and head restraints have been devised by IIWPG (International Insurance Whiplash Prevention Group) to prevent neck injury in moderate and low speed rear-end impacts. This paper describes a theory of whiplash injury in low-speed rear impact and the effect of head restraint systems. seat mechanism with sled using a BioRID-Ⅱ. We studied comparison of the injury criteria in order to improve whiplash injury.
정면 모의충돌시험에서 운전자 흉부가속도 유형에 따른 조향핸들과의 흉부접촉에 대한 연구
김요셉(Joseph Kim),임경호(Kyung-ho Lim),범현균(Hyen-kyun Beom),권성은(Sung-eun Kwon) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The increasing number of vehicles has given rise to frequent traffic accidents. The safety become one of the most important factor for customers to purchase a car. To meet customers' needs, NCAP(New Car Assessment Program) test is performed in many country such as US, Korea, and Europe. EuroNCAP performance becomes important to Korean car makers as the number of exporting vehicle to Europe market increases. The assessment of EuroNCAP frontal crash test includes the criteria of dummy injuries, vehicle measurements of deformation and the subjective modifier. Among the subjective modifier. the Chest Contact Modifier is one of the most ambiguous modifier because of difficulties in getting sufficient clues. In this paper, sled test was carried out using KNCAP full frontal crash pulse to analyze shape patterns of chest acceleration pulse which is one of the information of chest contact modifier. The test result was showed that four patterns of obscure pulse shape in vehicle crash test were categorized and these pulse patterns were clearly revealed to be occurring chest contact or not.