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정전분무법을 이용한 염료감응형 태양전지의 TiO₂ 박막 특성에 관한 연구 (pp.1423-1424)
장진주(Jin-Ju Jang),홍지태(Ji-Tae Hong),이동길(Dong-Gil Lee),이경준(Kyoung-Jun Lee),손민규(Min-Gu Son),김진경(Jin-Kyung Kim),김희제(Hee-Je Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Dye sensitized solar cells(DSC) have been very economical and easy method to convert solar energy to electricity. DSC can reach low costs in future outdoor power applications. However, to commercialize the DSC, there are still many shortages to overcome such as a low efficiency in a large size DSC. In this study, DSCs were fabricated by an electrospray coating method for the TiO₂ thin film. They were compared with DSCs prepared by conventional coating methods. We conducted an experiment to obtain the optimized parameters of voltage, flow rate, incident angle and distance in the electrospray method. After we manufactured TiO₂ film using that way, we could analyze the characteristics of DSC through SEM, UV curve, EIS.
장진주(Jin-Ju Jang) 한국엔터테인먼트산업학회 2016 한국엔터테인먼트산업학회 학술대회 논문집 Vol.2016 No.5
최근 항공 업계는 세계 경제 침체로 인한 치열한 경쟁과 테러 위험, Southwest를 필두로 한 LCC산업의 급속한 성장, Emirates를 중심으로 한 중동 3사 들의 약진이 특징적으로 나타나고 있다. 본 연구에서는 Emirates 항공이 1985년 첫 운항을 시작한 이래로 계속적인 성공과 발전을 이루고 내고 있는 데에 대한 성공 전략에 대해 SWOT 분석을 이용하여 연구하였다. Emirates 항공의 주요 전략들 중에는 유럽과 동양을 잇는 두바이의 지형학적 이점을 이용한 두바이 Mega-Hub 공항 전략, LCC 항공사들과의 전면전을 피하고 그들만의 브랜드 가치를 창조하기 위한 프리미엄 전략, 75,000명의 풍부한 인적 자원의 효과적 활용 등을 들 수 있었다. 그럼에도 불구하고 Emirates 항공 역시 중동 항공사라는 부정적 이미지, 경쟁사들보다 늘 혁신적일 수 있을 것인가에 대한 불확실한 미래와 같은 위협으로 어려움을 겪고 있음을 알 수 있었다. Emirate 항공의 사례를 살펴봄으로써 현재 많은 항공사들이 처해 있는 어려움을 극복하고 발전해 가는 데에 도움이 될 수 있을 것이다.
Mesh구조의 상대전극을 갖는 염료감응형태양전지의 특성연구
장진주(Jang, Jin-Ju),서현웅(Seo, Hyun-Woong),손민규(Son, Min-Kyu),이경준(Lee, Kyoung-Jun),홍지태(Hong, Ji-Tae),김희제(Kim, Hee-Je) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.10
A serious problem of the 21st century is the supply of energy resources. Reserves of fossil fuels are facing depletion: renewable energy resources must be developed in this era. Dye sensitized solar cell (DSC) has been very economical and easy method to convert solar energy to electricity. Recently a novel tandem cell structure is proposed to improve photocurrent of DSC. To fabricated a tandem cell, the mesh structure of counter electrode is essential for the improvement in transmittance. In this study, we conducted the experiment to get the characteristic of DSC with mesh counter electrode. Under the standard test condition (AM 1.5, 100mW/cm²), we obtained the maximum efficiency of 3.41% and the transmittance of 72% in the DSC with mesh counter electrode.
장진주 ( Jang Jin Ju ),서혜애 ( Seo Hye Ae ),송방호 ( Song Bang Ho ) 한국과학교육학회 2003 한국과학교육학회지 Vol.23 No.5
The research aimed to compare science curriculum between Korea and Israel and find out characteristics of science curriculum in Israel at middle school level. The middle school `science` of the 7th revised national curriculum in Korea and middle school `science and technology` in Israel were compared. Among characteristics of the Israel curriculum of` `science and technology`, distinct ones are as follows: First, `science and technology` was most highly emphasized with the largest number of time allotment among all subjects at middle school level in Israel. Second, the contents of `science and technology` were classified into seven areas of `energy and interaction`, `materials`, `organism`, `earth and the universe`, `technological systems and products`, `information and communication`, and `ecosystems` rather than four areas of energy, materials, life and earth in Korea, Third, `organism` was allocated with the highest number of hours among seven areas. Fouth, objectives of each content of science and technology` were divided into three categories: scientific aspect, technological aspect, and social value and objectives of each category were related to one another. This characteristic seems to stress STS, multidisciplinary, and interdisciplinary approaches in `science and technology` in Israel. Such characteristics of the `science and technology` education in Israel are likely to make significant contributions to establish human resources of highly developing science and technology including IT, BT, NT, ST in the future society. Reflecting upon the characteristics of `science and technology` education in Israel, Korea might seek for ways to improve its national power based on science and technology through strengthening science and emphasizing science and technology contents among school curriculum.
항공사의 환경적 CSR이 고객 태도 및 충성도에 미치는 효과: 환경보호 관심의 조절효과를 중심으로
장진주 ( Jinju Jang ),유예경 ( Yekyoung Yoo ),김인신 ( Insin Kim ) 관광경영학회 2021 관광경영연구 Vol.101 No.-
The current study aims to examine the roles of airline's corporate social responsibility(CSR). Specifically, the effect of airline's environmental CSR on passengers’ attitude towards the airline and loyalty was investigated. The relationship between passengers’ attitude and loyalty was also examined. In addition, the moderating function of environmental concern was verified. The conceptual model of the study was designed based on the previous research and the research model was empirically tested. The web-based survey was conducted and analyzed the data collected from the 426 passengers who had traveled abroad by airplane within one year because the passengers should recall their flight experience. The analysis results indicated that the airlines’ environmental CSR activities influenced passengers’ favorable attitude and enhanced their loyalty; and the effect of passengers’ attitude on loyalty was also significant. Moreover, environmental concern played a significant moderating role in the relationship between airline's environmental CSR activity and customer attitude. The results of the research provided academic and practical implications.
온라인 커뮤니티 가치가 여행자 태도에 미치는 효과 분석
장진주 ( Jang Jin-ju ),김인신 ( Kim In-sin ) 한국관광산업학회 2020 Tourism Research Vol.45 No.4
본 연구는 여행 커뮤니티를 이용하는 이용자들에게 인지된 커뮤니티의 정보적 가치와 사회적 가치가 여행자들의 커뮤니티에 대한 태도 형성에 중요한 영향을 미칠 것으로 예상하고 그 효과를 파악하고자 설계되었다. 또한, 여행자들에게 형성된 여행 커뮤니티에 대한 태도는 여행 만족 및 커뮤니티 홍보에 어떠한 영향을 미치는지 확인하고자 한다. 이 연구는 기존 선행연구들을 바탕으로 개념적 모형을 설정하였으며, 설정한 모형의 가설들을 실증적으로 검정하기 위하여 온라인 여행커뮤니티를 활용하고 있는 이용자들에게 온라인 설문지를 배포하여 설문조사를 수행하였다. 여행커뮤니티 이용자 중 유효표본 407개를 이용하여 구조방정식모형분석을 수행하였다. 자료를 분석한 결과, 온라인 여행커뮤니티를 이용하는 여행자들은 여행 커뮤니티의 정보적 가치로 인해 커뮤니티에 대한 태도가 향상되었으며, 사회적 가치 또한 호의적 태도 형성에 유의한 영향을 미쳤다. 여행 커뮤니티 이용자의 태도는 관광만족에 긍정적으로 영향을 미쳤으며, 커뮤니티 홍보에도 긍정적인 효과를 나타냈다. 이러한 결과들을 바탕으로, 온라인 여행 커뮤니티 운영자들에게 여행과 관련된 정보적 가치 관리에 대한 실질적 시사점을 제시하고, 커뮤니티 이용자들 간의 사회적 가치 확장을 위한 체계적 운영방안의 방안 마련 전략을 제시하였다 The current study aimed to investigate whether values of travel community, namely informational value and perceived social value, travelers’ attitude toward the travel community in the web-based context. Additionally, the effect of travelers’ attitude toward online community on travel satisfaction and community promotion were verified. Based on the previous literature related online travel community, this study designed conceptual model including four hypotheses. To test the hypothesized model in this study, empirical study was conducted through web-based survey, and 407 data were collected from online community users. The data analyzed with statistical program for social science, SPSS 25.0 and AMOS 25.0. The results showed that both informational value and perceived social value of online travel community enhanced attitude toward travel community online. Additionally, travelers’ attitude toward travel community online was a significant predictor of travel satisfaction and community promotion intention. This study provided an academic implication and practical strategies for managers of online community as well as owners and employees in tourism industry.
Jinju Jang(장진주),Taeyang Kwak(곽태양),Young Chul Kim(김영철),Heung-Jae Chun(전흥재),Dohyung Lim(임도형) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
With the introduction of additive manufacturing by selective laser melting, complex shape such as porous structure became to manufacturability. However, it is reported that the additively manufactured Ti-6Al-4V implant has low ductility due to the needle-shaped alpha prime martensitic microstructure, and can be increased through heat treatment. Therefore, this study was to confirm the effect of heat treatment through changes in the microstructure and mechanical strength of porous Ti-6Al-4V implants additively manufactured. In the case of the specimen, an irregular porous structure like bone was applied to the cervical cage. And heat treatment was performed at 650°C for 2 hours and at 800°C for 2 hours. The specimens were measured the change in microstructure with EBSD, and mechanical strength was evaluated according to ASTM F2077 standard. As a result, it was confirmed that alpha prime phase decomposition occurred and precipitation of the beta phase in the specimens heat treated at 650°C and 800°C for 2 hours. And it was confirmed that the particle size of the beta phase grew at 800°C compared to 650°C. In addition, it showed improved ductility compared to the decreased strength at 800°C. We confirmed that heat treatment at 800 °C for 2 hours on the additively manufactured porous cervical cage is a suitable condition to improve the microstructure characteristics and ductility.