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성경아(Kyoung-A Seong),좌경룡(Kyoung-Yong Chwa),이광형(H. Lee-Kwang) 한국정보과학회 1991 한국정보과학회 학술발표논문집 Vol.18 No.2
The routing problem in the computer communication network is to determine a routing paih from a source to a destination node We are especially concerned for algorithm with the smallest communication cost. If communication cost is a length of the path, this problem will be the shorthest path problem in the connected graph. FLBH_N(1, h) network is a double loop network with N nodes, such that each node has a forward link connecting to its neighbor and a backward link connecting to a node a some distance h where h is called the long hop length. In this paper, we first characienze properties of the shoribest path and the struchire of FLBH_N(1, h) networks Then we divide the FLBH_N(1, h) networks into several levels using the properties Second, we present and optimal shorthest path algorithm for FLBH_N(1, h) networks with O(log h) time and O(log h) space complexity.
A study of the Strain on the Radial Tire Sidewall and Carcass as Time
성경진(Kyoung-jin Seong),황인희(In-hee Hwang),심재열(Jae-yeul Shim),김두만(Doo-man Kim),김종원(Chong-won Kim) 한국자동차공학회 2003 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
n this paper, variation of the strain on the radial tire sidewall with inflation pressure and vertical load has been measured with respect to the time by experiment of method. As a result, the strain was stable after 24 hours, and vertical loading test must be done after I hour later from the prior load test. The experiment was conducted to verify the deformation behavior experiment analyze method using strain gage. So the basis for the experiment and analysis of sidewall strain was established.<br/>
센서 네트워크의 응용 분야에 따른 라우팅 알고리즘 적용 연구
박종철(Jong Chul Park),성경아(Kyoung A Seong),김근우(Geun Woo Kim),마중수(Joong Soo Ma) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1C
새로운 센서 네트워크 분야의 특성과 그 특성을 맞추기 위한 여러 라우팅 프로토콜들이 제안 되었다. 하지만, 제안된 알고리즘들이 정확한 시나리오 작성이나 응용분야 설정 없이 제안된 것이 많아 실제 시스템에 적용 하기에는 많은 문제점들을 낳을 것으로 생각된다. 그러므로 본 논문에서는 센서 네트워크의 특성을 파악하여 대표적인 센서 네트워크의 응용 분야를 분류하고 지금까지 제안된 라우팅 알고리즘들을 분류된 응용 문야에 적용하여 살펴 보았다. 이를 통해 앞으로의 센서 네트워크 라우팅 연구 방향을 제시한다.
구강내 궤양에서의 중합효소 연쇄반응을 이용한 단순포진 바이러스 DNA의 검색
최지호(Jee Ho Choi),김성범(Seong Beom Kim),이승철(Seung Chul Lee),서대헌(Dae Hun Suh),성경제(Kyung Jeh Sung),고재경(Jai Kyoung Koh) 대한피부과학회 1994 대한피부과학회지 Vol.32 No.1
Background : The oral ulcer is a common oral disorder, but the precise etiology remains elusive despite of intensive clinical, immunological, hematological and microbiobgi,al investigations. Objective : The purpose of his study was to examine oral ulcers
한국인에서의 전염성연속종 바이러스의 분자생물학적 역학에 관한 연구
최지호(Jee Ho Choi),김규한(Kyu Han Kim),김성범(Seong Beom Kim),서정화(Jung Wha Suh),고재경(Jai Kyoung Koh),성경제(Kyung Jeh Sung) 대한피부과학회 1994 大韓皮膚科學會誌 Vol.32 No.5
Background : Recent restriction enclonuclease analysis studies hsve revealed that MCV DNA can be classified into two major types, designated MCV-1 and MCV-2, by th:ir restriction enzyme cleavsge patterns. In earlier reports of MCV DNA analysis, MCV-2 was the main virus type found in genital lesions. However many recent studies cienied the relationship between virus type and anatomical distribution. Objective : The purpose of this study was to examine the ratio of MCV-l to MCV-2 in Korean isolates of MCV DNA and the relationship between MCV subtypes and with clinical features such as anatomical location, age, sex, numiber of lesions, and atopic dermatitis. Methads : MCV DNA extrated from 112 cases of Korean patients waa examined by restriction endonuclease analysis using Brtm HI. Results : 1. MCV-1 was found in 108 of 112 (96.4%) patients and MCV-2 in of 112 (3.6%) patients. The ratio of MCV-1 to MCV-2 wss 28:1. 2. There was no significant ciprrelation between MCV subtypes and the age, sex, number of lesions, atopic dermatitis, and anatoimic loction. 3. Lesions induced by MCV-1 MCV-2 were indistinguishable on the brsis of size and form. Conclueion : This study showis that the ratio of MCV-1 to MCV-2 was 28:1 in Korean molluscum contagiosum patients and there was no relationship between MCV subtyies and lesional morphology or snatomical distribution. (Kor J Dermatol 1994;32(5):763-769)
일 반 논 문 : 국내 카페 파사드(facade)에서 읽어 낸 문화적 의미
황성경 ( Seong Kyoung Hwang ),김진아 ( Jina Kim ) 서울시립대학교 도시인문학연구소 2015 도시인문학연구 Vol.7 No.2
오늘날 한국인들에게 커피는 일상생활에서 빼놓을 수 없는 중요한 존재가 되었으며, 커피에 대한 관심의 증가와 함께 카페 공간 역시 보다 다양한 문화적 요소를 접목시켜 하나의 독특한 ‘카페문화’를 형성하고 있다. 특히 최근 유행처럼 확산되고 있는 커피전문점들의 개방형 파사드는 거리 전체를 투명한 유리벽 또는 이 마저도 제거된 파사드들의 연속으로 구성함으로써 새로운 도시 풍경을 만들어내며 소비자를 유혹하고 있다. 본 연구는 도시 공간을 산책하며 비평적 시선을 투사한 벤야민의 방식을 응용하여 오늘날 한국 도시의 주요 경관을 구성하는 개방형 카페 파사드의 공간적 특성을 고찰하고 그 사회문화적 의미를 도출한다. 1980년대까지도 주를 이루었던 폐쇄형 카페 파사드와는 대조적으로, 전이형과 개방형 파사드는 밝고 세련된 도시적 분위기를 창출하며 커피전문점의 위상을 강화하게 된다. 특히 노천카페로 대표되는 유럽의 전이형 파사드와는 달리, 국내에서는 노천카페적 성격을 띠면서도 ‘폴딩도어’ 즉 개폐형 유리문을 사용하는 개방형 파사드가 급속도로 확산되어왔다. 본고는 폴딩도어식 파사드가 철골과 유리를 사용한 서구 아케이드의 진화된 모습과 문화적 특징을 내보이면서 동시에 한국 대청마루 창호의 기능과도 혼성적으로 조우한다는 점에 주목하며, 가변적으로 개폐되는 개방형 파사드가 소비자들의 시선과 거리 경험을 어떻게 변모시키는지 고찰한다. 그리고 보드리야르가 후기자본주의 사회의 특성에 대해 지적한대로, 카페 공간에서 작용하고 있는 보다 정교한 육체의 기호화·계층화 과정에 대해 논의한다. 그러나 이러한 비판적 기능에도 불구하고, 개방형 파사드는 변화와 이행이 일어나는 역동적인 ‘문지방’ 또는 ‘리미널 스페이스’로 기능할 수 있으며 복합적인 경험과 이벤트를 창출함으로써 새로운 의식적 전환을 불러일으킬 수 있는 가능성의 공간이라는점에 주목한다. Nowadays, coffee is a fundamental treat for Koreans in everyday life; furthermore, the cafe has been developed by combining coffee drinkers’ diverse tastes and lifestyles with cultural elements, which has in turn formed “the cafe culture”. Many cafes have incorporated modern city scenery with a succession of clear glass or open-type facades in order to tempt consumers. This study follows the approach of Walter Benjamin, who strolled around the city using a critical review approach to examine the spatial characteristics of the open cafe facade, which has become a typical part of the Korean cityscape, and elicit their social and culture meanings. The metastatic-type and open-type facade, in contrast with the enclosed facade that was a typical feature until the 1980s, creates an atmosphere of refinement and brightness that strengthens the cafe’s status. However, in Korea, the open cafe facade with a “folding door” has rapidly spread, and is different from the European-style open-air cafe; this open facade is a progressed form of Western arcades or stores formed with glass and iron. This study also indicates that the folding door-facade resulted from heterogeneous encounter with the traditional Korean floored room, and considers how such an open facade changes customers’ experiences in different season and weather. In addition, although the modern social stratum such as the bourgeoisie and Korean noblemen, or “yangban”, have disappeared, this study argues that elaborate social stratification exists in cafe spaces. As Baudrillard pointed out, this reflects the characteristic of a postcapitalism society in that everything-not only objects, but also tastes, spaces, and bodies-has changed to a commodity sign. In spite of this critical observation, the open cafe facade might play a dynamic role of change and transition as a “threshold” or “liminal space” with the possibility of producing fresh consciousness through diverse experiences and events.
관점 획득과 관련된 청소년에서의 뇌 활성화 : 성인과의 차이
박성경,손정우,이승복,김혜리,이상익,신철진,김시경,주가원,Park, Seong Kyoung,Son, Jung-Woo,Lee, Seungbok,Ghim, Hei-Rhee,Lee, Sang-Ick,Shin, Chul-Jin,Kim, Siekyeong,Ju, Gawon 대한생물정신의학회 2019 생물정신의학 Vol.26 No.2
Objectives The purpose of this study was to investigate the differences between adolescents and adults, in the perspective-taking ability, as well as the brain activation patterns during the perspective-taking situation. Methods We recruited healthy adolescents aged 13 years to 15 years (n = 20) and adults aged 19 years to 29 years (n = 20). All the subjects were scanned while performing the perspective-taking task, in which an emotional situation was presented in the form of statements comprising first person, as well as third person perspectives. Differences in brain activation between groups were assessed by contrasting neural activity during the tasks. Results In the between-group analysis, while performing the third-person perspective-taking task, the adolescent group showed greater neural activities in the middle frontal gyrus and precentral gyrus as compared to the adult group. Positive correlation was observed between the activity in the frontal areas (Brodmann area 6/9) and the score of scales related to perspective-taking and social cognition in the adolescent group. Conclusions This study suggests that several frontal brain areas of adolescents needs to be overactivated in order to compensate for low perspective-taking ability when they ought to take another person's point of view.
계절에 따른 골판지 원지의 강도 변화에 대한 연구 ( III )
이광섭(Kwang-Seob Lee),최경화(Kyoung-Hwa Choi),원현석(Heon-Seong Won),최성경(Seong-Keong Choi),최지수(Ji-Su Choi),류정용(Jeong-Yong Ryu) 한국펄프·종이공학회 2018 펄프.종이技術 Vol.50 No.4
The strength of linerboards produced in summer was weaker than that in winter. In this study, efforts were made to increase the consistency of OCC pulp to improve the strength of linerboards produced in the summer. The pulping temperatures of summer and winter were set at 52℃ and 19℃, respectively. The pulping consistency was set 5% at 19℃ in winter and 5, 6, 6.5 and 7% at 52℃ in summer. As a result, it has been found that the strength of the linerboard can be improved by increasing the pulping consistency. The strength of the linerboard with a pulping consistency of 6% and a pulping temperature of 52℃ is similar to that of 5% and 19℃. The linerboard strength increased by more than 20% when the consistency increased to 6.5 and 7%. Therefore, an increase in pulp consistency is considered to be one of the solutions to improve the strength of linerboards in summer.
차씨오일의 항산화 활성 및 뇌 해마유래 HT22 세포에서의 산화적 스트레스에 대한 보호효과
김종민(Jong Min Kim),박선경(Seon Kyeong Park),강진용(Jin Yong Kang),배성경(Seong-kyeong Bae),정가희(Ga-Hee Jeong),조경환(Kyoung Hwan Cho),김종철(Jong Cheol Kim),김재중(Jae Joong Kim),허호진(Ho Jin Heo ) 한국차학회 2018 한국차학회지 Vol.24 No.1
The antioxidant activities and hippocampal neuroprotective effects of tea (Camellia sinensis) seed oil against H 2 O 2 -induced oxidative stress were investigated to confirm its physiological effects. The antioxidant effects of tea seed oil were evaluated by measuring its 1,1-diphenyl-2-picrylhydrazyl, 2,2 -azino-bis (3-ethyl benzothiazoline-6-sulfonic acid) radical scavenging activities and malondialdehyde inhibitory effect. Tea seed oil was found to have significant antioxidant activity and inhibitory effect of lipid peroxidation. To confirm the ameliorating effect of the cholinergic system, the inhibitory effect of acetylcholinesterase (AChE) derived from PC12 was investigated. Tea seed oil was found to inhibit the AChE activity. Also, the protective effects of hippocampal neuronal cells against H 2 O 2 -induced neuronal cytotoxicity were investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide and 2 ,7 -dichlor-ofluorescein diacetate in HT22 cells. Tea seed oil was found to significantly increase the cell viability and reactive oxygen species scavenging activity.