• 한국전자파학회논문지
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• 제24권4호
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• pp.394-402
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• 2013

본 논문은 GaN(Gallium Nitride) HEMT(High Electron Mobility Transistor)를 이용한 S대역 레이더용 전력증폭기 설계하고 제작된 스위칭 모드 전력증폭기의 ruggedness 시험에 관련된 내용을 기술하였다. 고효율 특성을 위해 전력증폭기를 Class-F로 설계하였으며, 측정을 위한 입력 신호는 $100{\mu}s$의 pulse width 및 10 %의 duty cycle인 pulse 신호를 사용하였다. 제작된 Class-F 전력증폭기의 중심 주파수에서 측정한 결과, 8.7 dB의 전력 이득과 42 dBm의 출력 전력, 54.2 %의 전력 부가 효율(PAE) 및 62.6 %의 드레인 효율이 측정되었다. 또한, 전력증폭기의 신뢰성 시험의 일환으로 Ruggedness 시험을 위한 실험 구성을 제안하고, VSWR(Voltage Standing Wave Ratio)을 변화시켜 출력 전력과 효율을 측정하였다. 설계된 전력증폭기가 VSWR 변화에 따라 출력 전력 32.6~41.1 dBm까지 변화하고, 드레인 효율은 23.4~63 %까지 변하는 특성을 얻을 수 있었다.

• 복식문화연구
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• 제17권4호
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• pp.640-652
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• 2009

The purposes of this study were to provide information on customers for cosmetic companies to develop goods and promotion strategy by examining facial images of university women and their recognition level about cosmetics brand personality. The results were as follows; First, satisfaction level of university women with their lips and eyes was very high, while lowest in skins. Second, factors of brand personality of three kinds of foreign cosmetics brands and three kinds of domestic brands were sincerity, beauty, renovation, reliability and ruggedness. In beauty, reliability and ruggedness, they preferred foreign brands to domestic ones, while they preferred domestic ones in sincerity and renovation. Third, the satisfaction level with face had a statistically significant relationship to the importance of face and cosmetic brands, while the importance of face had to the beauty of the brand. In the interrelationship among facial images and the factors of brand personality, they had significant interrelationships, provided beauty and ruggedness, and reliability and ruggedness had no significant interrelationship.

• 동아시아식생활학회지
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• 제22권1호
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• pp.120-132
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• 2012

The purpose of this study was to investigate thet 5 dimensions of brand personality that could affect brand attachment, and actual and ideal self-congruence in the family restaurant. Also, this study investigated the effects of actual and ideal self-congruence on brand attachment. Questionnaires were given to a sample of customers who visited one of the 4 famous national brands of family restaurants in Daegu. A total of 332 questionnaires were analyzed with SPSS/$PC^+$and LISREL. There were four major empirical research findings. First, sincerity, competence, sophistication and ruggedness affected brand attachment. And second, sincerity, competence and sophistication affected actual self-congruence. Third, sincerity and sophistication affected ideal self-congruence. And fourth, actual self-congruence affected brand attachment. However, the excitement dimension of brand personality did not affect brand attachment,; dimensions of excitement and ruggedness did not affect actual self-congruence,; dimensions of excitement, competence and ruggedness did not affect ideal self-congruence. Also, ideal self-congruence did not affect brand attachment. Based on these findings, marketers of family restaurants were recommended to strengthen the dimensions of sincerity, competence, and sophistication, and to weaken the ruggedness dimension.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.343-346
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• 2005

This study makes the performance evaluation of water-jet chipping through analysis of ruggedness of chipping surface. The ruggedness is mapped by 3D Laser Scanner and the results are also compared with the chipping surface by mechanical chipping. And the details of in-situ works is investigated for increasing interface adhesion between existing concrete and repairing mortar. Water-jet has good operation efficiency which is up $60m^2$ per hour when the chipping depth is 7cm and also has a large ruggedness about 1.65.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제53권7호
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• pp.358-363
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• 2004

A new 600 V dual gate transistor employing thyristor action, which incorporates floating PN junction and trench gate IGBT, is proposed to improve the forward current-voltage characteristics and the short circuit ruggedness. Our two-dimensional numerical simulation shows that the proposed device exhibits low forward voltage drop and eliminates the snapback phenomena compared with conventional trench gate IGBT and EST The proposed device achieves high current saturation characteristics by separating floating N+ emitter and cathode. The proposed device achieves low saturation current value compared with conventional devices, and the short-circuit ruggedness is improved. The proposed device may be suitable for the use of high voltage switching applications.

• 한국지진공학회논문집
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• 제9권1호통권41호
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• pp.1-7
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• 2005

본 논문에서는 원전내부의 내진범주 1급 계전기를 포함하고 있는 캐비닛 구조물의 최적내진보강에 대한 연구를 수행하였다. 지진시 계전기는 구조적인 파괴보다는 떨림에 의한 기능적 파괴가 발생한다. 이를 방지하기 위해서는 캐비닛구조물의 응답을 적정 수준이하로 감소시켜야 하므로 다양한 감쇠보강의 설치패턴에 따라 최적의 감쇠계수를 ${\mu}$-GA(micro-Genetic Algorithm)기법을 이용하여 산정하였다. 대상캐비닛 구조물은 해석의 정확도와 계산의 효율성을 만족시키기 위해 이용한 프레임구조로 모델링되었다. 구조물의 응답은 감쇠기의 비선형거동을 고려한 비선형 시간이력해석에 의해 얻어진 가속도응답스펙트럼으로 나타내었다. 목적함수는 구조물의 해석에서 얻어진 응답스펙트럼의 최대값과 목표 포괄기기내진력 스펙트럼 (GERS; General Equipment Ruggedness Spectra)의 최대응답비를 기초로 작성되었다. 해석결과 적절한 보강패턴을 선정한 경우 좋은 적합도의 향상을 보였으며 특히 감쇠지수의 값이 작은 경우 적합도의 개선효과가 뛰어났다.

• 제어로봇시스템학회논문지
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• 제13권8호
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• pp.790-797
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• 2007

This paper proposes a new measure of cost function ruggedness in local optimization with DEAS. DEAS is a computational optimization method developed since 2002 and has been applied to various engineering fields with success. Since DEAS is a recent optimization method which is rarely introduced in Korean, this paper first provides a brief overview and description of DEAS. In minimizing cost function with this non-gradient method, information on function shape measured automatically will enhance search capability. Considering the search strategies of DEAS are well designed with binary matrix structures, analysis of search behaviors will produce beneficial shape information. This paper deals with a simple quadratic function contained with various magnitudes of noise, and DEAS finds local minimum yielding ruggedness measure of given cost function. The proposed shape information will be directly used in improving DEAS performance in future work.

• 대한안전경영과학회지
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• 제10권4호
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• pp.315-325
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• 2008

This study examines the effect of brand personality on consumer's attitude. Previous research has suggested that the greater the congruity between consumer personalities and brand personalities, the greater the preference for the brand. However, empirical explorations of this hypothesis revealed that the congruity between consumer personalities and brand personalities is limitedly related, if ever, to the preference for the brand. It is partly because of the views of the previous researchers who considered human personality as a uni-dimensional concept, and partly because of the lack of consensus regarding what brand personality really is. This study examines the relative effect of brand personality on company image. In this study, brand personality is represented by the 'Big Five' factors - Sincerity, Excitement, Competence, Sophistication and Ruggedness - which were suggested by Jennifer Aaker.

• 한국산업정보학회논문지
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• 제24권5호
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• pp.65-76
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• 2019

본 연구는 소비자가 지각하는 디자인 개성 차원이 제품 디자인의 태도나 구매의도 등 소비자 반응에 미치는 영향을 살펴보고 디자인 전형성이 디자인 개성과 소비자 반응간의 관계를 조절하는지를 검증하였다. 연구결과 전형적 디자인에 노출될 경우 진실성과 강인함이라는 디자인 개성 차원을, 비전형적 디자인에 노출되는 경우에는 열정과 세련됨 디자인 개성차원을 보다 높게 지각하는 것으로 나타났다. 전형적 디자인의 경우 진실성, 유능함, 열정, 강인함 등의 디자인 개성차원이, 비전형적 디자인의 경우에는 진실성, 유능함, 열정, 세련됨 등이 디자인 태도에 긍정적인 영향을 미치는 요인으로 나타났다. 또한 전형적 디자인의 경우에는 유능함과 강인함이, 비전형적 디자인의 경우에는 진실성, 열정, 강인함이 구매의도에 긍정적인 영향을 미치는 것으로 나타났다. 마지막으로 유능함과 강인함은 전형적 디자인에서, 세련됨은 비전형적 디자인의 경우 디자인 태도에 더 많은 영향을 미치는 것으로 나타났다. 또한 유능함은 전형적 디자인의 경우에, 열정은 비전형적 디자인에서 제품구매의도에 더 많은 영향을 주는 것으로 나타났다.

• 한국식생활문화학회지
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• 제26권2호
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• pp.142-150
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• 2011

This study investigated and compared the brand personality of domestically run family restaurants with quick service restaurants. Information was elicited from respective patrons using self-administered questionnaires which asked questions on recognizable brand characteristic and attributes of each restaurant through image maps. Data from the self-administrated questionnaires were collected and analysed using comparative statistical analysis, including frequency, t-test, chi-square, factor analysis, reliability analysis and correspondence analysis. Overall, patrons identified 5 factors which they used to rank individual restaurants; sophistication, competence, likeableness, trendiness, and ruggedness. Overall results showed the family restaurants that scored highly on likeableness and trendiness were Outback and TGIF. Furthermore, Vips was the only family restaurants that scored highly in ruggedness. In relation to quick service restaurants, Lotteria scored highest for competence while McDonalds and Burger King scored best for sophistication. Limitations and future research directions are also discussed.