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Protection Circuit Module에 최적화된 60 V급 TDMOSFET 최적화 설계에 관한 연구
이현웅,정은식,오름,성만영,Lee, Hyun-Woong,Jung, Eun-Sik,Oh, Reum,Sung, Man-Young 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.5
Protected Circuit Module protects battery from over-charge and over-discharge, also prevents accidental explosion. Therefore, power MOSFET is essential to operate as a switch within the module. To reduce power loss of MOSFET, the on state voltage drop should be lowered and the switching time should be shorted. However there is trade-off between the breakdown voltage and the on state voltage drop. The TDMOS can reduce the on state voltage drop. In this paper, effect of design parameter variation on electrical properties of TDMOS, were analyzed by computer simulation. According to the analyzed results, the optimization was performed to get 65% higher breakdown voltage and 17.4% on resistance enhancement.
강오름(Oh Reum Kang) 서울대학교 비교문화연구소 2015 비교문화연구 Vol.21 No.1
The identity of sexual minorities is spatial essentially in that it is dependent on certain space. I examines the position that sexual minorities have in Korean society by tracing the process in which certain space is converted into ‘queer space`` through active agents` performance. Unlike gay men which have had their spatial area, it has not been long before lesbians tried to have their communities. The development NGO movement on local community has triggered the demand of regional movement of sexual minority rights groups. By the experience in the 2008 general election, lesbian activists became aware of the significance of Mapo-gu as a queer town where everyday life was lived. The reasons why Mapo-gu has become a queer region are as follows. First, because Mapo was convenient for transportation and near to downtown, lesbian women who had low income have stayed here. Second, an atmosphere of freedom around Hong-Ik University, so-called ‘the yearning for Hong-Dae,`` has been also important for lesbian couples to move into Mapo area. This factor has facilitated strong networks among queer residents. ‘Union of Mapo Rainbow Residents(UMRR)’ has launched in these background. UMRR tried to strengthen a network of queers in Mapo and visualized the existence of queer. Their movement has called attention to the symbolism of Mapo as a queer area. Local movement of sexual minorities in Mapo district is a good example in which the identity of sexual minorities becomes visible by inter-relationship with space.
브랜드 역사, 브랜드 원산지와 제조원산지 일치여부, 과시적 소비성향에 따른 선호도 연구
송해오름 ( Hae O Reum Song ),황선진 ( Sunjin Hwang ) 한국패션비즈니스학회 2017 패션 비즈니스 Vol.21 No.1
This study investigated the effect of brand history, congruity between country of origin and conspicuous consumption of fashion brand, based on the evaluation of customers. The factorial design was constructed as a 3-way mixed design: 2(brand history: presented vs not presented) x 2(congruity between Country of Brand(COB) and Country of Manufacture (COM): congruent vs incongruent) x 2(conspicuous consumption: high vs low). A total of 302 men and women aged above 30 and living in Seoul or within the capital area, were enrolled as subjects. Of these, 26 insincere responses were excluded and a final total of 276 responses were used in the analysis. The statistical analysis included reliability analysis, three-way ANOVA, and simple interaction effect analysis with SPSS 18.0 statistics. Our results indicate that brand history, congruity between COB and COM, and conspicuous consumption had significant effect on the fashion brand preference of consumers. Furthermore, presenting the brand history resulted in higher brand preference. Second, the brand history and conspicuous consumption had a significant interaction effect on brand preference. Consumers with higher conspicuous consumption showed significantly higher brand preference than those with lower conspicuous consumption. Third, congruity between COB and COM and conspicuous consumption had a significant interaction effect on brand preference. However, when COB and COM were dissimilar no significant effect of conspicuous consumption on brand preference was observed.
이동민(Lee Dongmin),박오름(Park Ohreum) 한국디지털디자인학회 2011 디지털디자인학연구 Vol.11 No.1
기존 4대 매체의 기능이 약해지면서 새로운 미디어가 부각하고 있다. 이는 기업 경쟁의 심화와 더불어 소비자정보 생산에 입각한 인터랙티브 활동에 따른 변화이다. 이러한 변화로 광고 분야에서 쌍방향 커뮤니케이션이 강조되면서 옥외광고 또한 단순한 랩핑 광고 형태의 일방적으로 제공하는 광고에서 벗어나 소비자의 선택에 의해 받아들이는 인터랙티브 옥외광고로 변모하고 있다. 최근의 옥외광고는 다양한 콘텐츠의 실시간 반영 기술을 기반으로 소비자와 좀 더 밀접히 소통할 수 있는 양방향적 매체로 진화하고 있다. 인터랙티브 옥외광고가 어떻게 표현되고 있는지에 대한 연구는 앞으로의 변화추이를 분석하는 데 꼭 필요하다. 그러므로 본 논문에서는 인터랙티브형 옥외광고를 분석하여 앞으로 옥외광고시장의 발전 가능성을 모색하고자 한다. 본 연구는 옥외광고를 문헌을 통해 정의와 유형별 분류를 알아보고 인터랙티브 옥외광고의 크리에이티브 표현 방법을 국외와 국내의 사례에서 분석하였다. 또한 설문을 통해 인터랙티브 옥외광고가 소비자에게 어떠한 영향을 미치고 있는지 알아보고 인터랙티브 옥외광고의 발전 방향을 제시하고자 한다. The functionality of the existing four media is waning and new media is rising. This change is due to the intensification of competition with companies and interactive activities base on producing the consumer information. So the approach to ads in the future will be highlighted by the two way communication for the interactive marketing. These tend to appear in the outdoor advertising which is not a simple wrap advertising that consumers choose to accept it is the interactive outdoor advertising. In this paper we analyze the changing patterns of interactive and the case of interactive outdoor advertising. And the impact of interactive outdoor advertising and interactive development of future access patterns to be investigated by the consumer surveys that is a case for interactive outdoor advertising.
전동기 전압 전류 측정 및 PLL 기법을 이용한 모터고장진단 방법
박성명(Park seongmyeong),전오름(Jeon Oreum),김준석(Kim JoohnSheok) 전력전자학회 2021 전력전자학술대회 논문집 Vol.2021 No.7
보다 정교한 전동기 고장진단을 수해하기 위해서는 전동기의 정상상태 전압/전류에 대한 FFT분석이 필요하다. 본 논문에서는 3상 PLL기법을 이용하여 전기 각 주파수를 추정하고 이로부터 정상상태의 전동기 전압/전류에 대한 FFT 분석을 통하여 전동기의 고장 유무 및 예측을 수행하는 방법을 제시하며, 여러대의 전동기에 동시에 적용 가능한 전동기 고장 진단/예측시스템을 구성한다.