Electrochemical Characteristics of Home-Made Bipolar Plate and Its Relationship with Fuel Cell Performance

권영국,이재광,지덕진,이재영,Kwon, Young-Kook,Lee, Jae-Kwang,Ji, Duk-Jin,Lee, Jae-Young The Korean Electrochemical Society 2009 한국전기화학회지 Vol.12 No.1

본 연구에서는 탄소성형 분리판의 물리화학적, 전기화학적 특성을 분석하여 수소 및 개미산연료 전지의 성능에 미치는 영향을 알아보았다. 기존 기계가공 탄소분리판과 탄소복합소재 탄소성형 분리판의 접촉저항, 부식특성, 소수성을 비교 평가하였다. 특히, 현재 연구개발 중인 탄소복합소재 성형분리판의 경우 계면접촉저항이 기계가공 분리판보다 1.5배 높게 나타났으며, 내식성 실험에서는 산에 취약하여 분리판 표면이 거칠어지고 결정성이 감소하였다. 연료전지의 성능은 분리판의 계면접촉저항에 크게 영향을 받았으며, 계면저항이 적은 기계가공 분리판이 수소 및 개미산 연료 전지에서 높은 성능을 나타냈다. The effect of physico-electrochemical properties of carbon bipolar plate(BPP) on hydrogen and formic acid fuel cell performance has been investigated. BPP made of conventional graphite and carbon fiber composite were compared with the factors of interfacial contact resistance (ICR), corrosion behaviours, and hydrophobicity. Among them, the ICR of carbon fiber composite BPP has 50% higher than conventional graphite and the surface of carbon fiber composite BPP became rougher due to weaker corrosion resistance. Fuel cell performance was strongly dependent of ICR value of carbon bipolar plate.

열처리 조건이 다른 Poly(lactic acid)(PLA) 직물의 물성 연구

권영국,정우영,손희정,길명섭,Kwon, Young-Kuk,Jung, Woo-Young,Son, Heui-Jeong,Khil, Myung-Seob 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.2

The effect of heat setting and subsequent dyeing on the mechanical properties of poly(lactic acid)(PLA) fabrics was investigated, including the amount of pilling and "Year resistance. The PLA fabric exhibits significantly reduced tear strength as well as pilling and wear resistance as the heat setting temperature and time increase. While the tensile strength decreased above a setting temperature of $120^{\circ}C$, surprisingly the tensile strength of the set PLA fabric did increase slightly as the setting temperature was increased to values below $120^{\circ}C$, After dyeing, the other mechanical properties, pilling, and wear resistance of the PLA fabrics exhibited similar behaviors to the heat setting treatment. From these results, the heat treatment conditions of PLA fabric should be carefully decided to avoid the deteriorating effects on PLA fabrics.

간접고용되는 노동자, 정리해고 당하는 삶

권영국(Young-Kuk Kwon) 참여연대 참여사회연구소 2014 시민과세계 Vol.- No.24

일제시기 식민사학자의 고려시대 동북면의 국경ㆍ영토 인식

권영국(Kwon, Young Kook) 한국사학회 2014 史學硏究 Vol.- No.115

중고등학교 학생들의 안전의식과 안전교육에 대한 기초연구

권영국(Young Guk Kwon) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.1

The purpose of this study is to figure out current situation of safety education to improve safety awareness and practice in Korean school students. In order to do this, it is necessary to identify the current level of safety awareness and practice with the actual status of accident occurrence. Furthermore it is try to figure out the most influencing factors on the safety education for Korean middle and high school students. The 412 students were taken from a random sample. The samples were one class of 2nd grade students in five different middle schools and four different high schools in Seoul, Korea. The survey was conducted from 29 September 2010 through 15 October 2010. An additional samples for the questionnaires posted in web were collected. The 305 respondents from school students and 80 respondents from web survey were used to analyze for this study out of 800 respondents. SPSS was used to analyze the questionnaires. The overall safety-awareness score was relatively high at 4.56/5 for fire safety and 4.32/5 for traffic safety. Safety awareness was higher for girls than boys and also for high school students than middle school students. Safety education by parents at home gives a good impact on high safety practices. Safety awareness was improved by feeling of necessity for safety training. The safety prevention training provided during the class by teacher and home training by parents improved safety practice. The correct direction of safety education for younger students can be easier in future.

외식관련전공 대학생의 창업동기가 창업의도에 미치는 영향에 관한 연구

권영국(Young Guk Kwon),윤혜현(Hye Hyun Yoon) 한국조리학회 2013 한국조리학회지 Vol.19 No.4

The purpose of this study is to understand the influence of entrepreneurial motivation upon entrepreneurial intentions of college students majoring in foodservice through the pull and push factors of the motivation theory, analyzing the moderating effects by gender. Based on total 317 college students, this study was conducted with exploring factor analysis, reliability analysis, correlation analysis, regression analysis, and hierarchical moderated regression. The results showed that, among the pull factors, need for achievement (p<0.001) and self-actualization (p<0.01) had a significant positive influence on entrepreneurial intentions. It appears that entrepreneurial intentions of college students majoring in foodservice were developed by positive entrepreneurial motivation. The moderating effects by gender were not significant. Through the study results with theoretical suggestions, this study proposed a policy to encourage entrepreneurial activation and desires in college students. Limitations and further research directions are also discussed.

초기영어의 3음절 단음화 현상에 대한 소고

권영국(Kwon, Young-Kook),문지순(Moon, Grace Ge-Soon) 한국언어학회 2014 언어 Vol.39 No.4

The status of Trisyllabic Shortening or TRISH has been solid as a phonological process in historical phonology of late Old English and early Middle English since Luick (1921), who asserted that analogical leveling based on trisyllabic shortening was required to account for the exceptions to Middle English Open Syllable Lengthening or MEOSL. Minkova (1982) and Minkova and Stockwell (1996) have claimed, however, that MEOSL must be regarded as compensatory lengthening due to the loss of schwa in word-final position and that there is no place for TRISH in the quantity adjustment processes in early English. In line with Minkova (1982), Bermudez-Otero (1998) has proposed an Optimality-theoretic analysis of MEOSL and criticized the role of analogical leveling and in particular that of TRISH in the account of alternations within the inflectional paradigms of nouns in early English. The aims of the current paper are twofold: we will review the arguments of both sides over TRISH in phonological literature of early English; adopting Lahiri and Fikkert’s (1999) view that TRISH, interacting with MEOSL, played a crucial role as a prosodic constraint in the phonology of early English, we will propose a unified constraint system within Optimality that can account for MEOSL and TRISH.

특급호텔 식음료부서의 내부마케팅활동에 따른 사회적 교환관계 인식이 종사원의 이직의도에 미치는 영향

권영국 ( Young Guk Kwon ),이승범 ( Seung Bum Lee ) 한국호텔리조트학회(구 한국호텔리조트카지노산학학회) 2015 호텔리조트연구 Vol.14 No.2

The purpose of this study is to identify the structural relationships among internal marketing activities, social exchange relationship(perceived organizational support(POS), organizational trust(OT)), and turnover intention(TI) in a hotel``s F&B department. To accomplish the objectives data were collected by F&B employees working in deluxe hotels located in seoul. Based on total of 374 useful samples obtained from the empirical research, this study verified 5 hypotheses using frequency, reliability test, exploratory factor analysis, and multiple regression analysis. The results show that internal marketing factors(e.g., management support, reward system, education and training, internal communication) had a positive significant effects on POS and factors(e.g., empowerment, management support, education and training) of internal marketing had a positive significant effects on OT. Also, the POS had a positive relationships with OT, POS and OT had a negative significant effects on TI. This study confirms that a effective internal marketing activities in an deluxe hotel``s F&B department works as a significant factor in forming social exchange relations among its employees and, as a results, had a negative impact on its employees`` TI. Limitations and future research directions are also discussed.

외식업 종사원의 조직정치지각이 조직침묵 및 이직의도에 미치는 영향

권영국(Young-Guk Kwon),김영중(Young-Joong Kim) 한국조리학회 2017 한국조리학회지 Vol.23 No.3

축제참가자의 체험가치가 지역축산물 브랜드 자산형성에 미치는 영향:

권영국(Kwon, Young-Guk) 한국외식경영학회 2018 외식경영연구 Vol.21 No.2

본 연구는 횡성한우축제 참가자를 대상으로 한우브랜드 체험을 통해 얻어진 가치 인식이 지역축산물 브랜드 자산, 즉 브랜드인지도와 브랜드이미지 그리고 품질인식에 어떠한 인과관계를 형성하는지를 실증적으로 규명해 보고자 한다. 실증연구를 수행하기 위해 확보된 301개의 표본을 바탕으로 연구모형의 신뢰성, 적합성 등을 검토하였고, 구조방정식을 사용하여 총 5개의 가설을 검증하였으며, 모형의 적합도는 ?撮?=332.363(df 94), p<0.001, CMIN/df 3.536,GFI 0.895, NFI 0.883, CFI 0.912, IFI 0.913, RMSEA 0.089 등으로 조사되었다. 연구결과, 축제 참가자들의 체험가치(기능성, 유희성)는 브랜드인지도와 브랜드이미지에 유의한 정(+)의 영향을 미치는 것으로 조사되었다. 아울러 지역축산물 브랜드 자산간(브랜드인지도, 브랜드이미지, 품질지각)의 관계를 고찰한 결과, 브랜드인지도는 브랜드이미지와 품질인식에 유의한 정(+)의 영향을 미쳤으며 브랜드이미지 또한 품질인식에 긍정적인 영향을 미치는 것으로 나타났다. 이를 통해 축제 체험 마케팅은 지역축산물 브랜드 자산 형성에 긍정적으로 작용한다는 것을 확인할 수 있었다. 아울러 이론적, 실무적 시사점과 더불어 연구의 한계 및 향후 연구방향에 대해서도 논의하였다. The purpose of this study were to understand the influence of experiential value focusing the Hoengsung Hanwoo festival participants on local stock farm products’ brand equity(brand awareness(BA), brand image(BI), perceived quality(PQ)). Based on the surveys of 301 festival participants obtained by the empirical research, the study reviewed the reliability, fitness of the research model, and verified total of 5 hypotheses with the Amos program. The hypothesized relationships in the model were tested simultaneously by using a structural equation model(SEM). The proposed model provided an adequate fit for the data ?撮?=332.363(df 94), p<0.001, CMIN/df 3.536, GFI 0.895, NFI 0.883, CFI 0.912, IFI 0.913, RMSEA 0.089. The model’s fit, as indicated by these indexes, was deemed satisfactory; thus, it provided a good basis for testing the hypothesized paths. SEM resulted that, first, experiential value(functioning and playfulness) had a positive significant influence on BA and BI. Second, the BA had a significant positive relationships with BI and PQ. In addition, BI had a positive significant influences on PQ. As a result, it was confirmed that festival experiential marketing positively contributed to the formation of local livestock product brand equity. Through the study, results that implications and limitations, as well as future research directions were also discussed.