The Structural and Physical Properties of TiOxNy thin films prepared by RF PECVD system

정충경,송용화,배인섭,부진효 한국진공학회 2004 한국진공학회 학술발표회초록집 Vol.- No.-

Surface Properties of Photocatalytic TiO2 Thin Films with Microwave Discharged Plasma Surface Treatment

정충경,부진효,배인섭,S. H. Jeong,S.-J. Cho,Y.-H. Song 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.3

We have deposited titanium dioxide (TiO2) thin films on glass using a single molecular precursor such as titanium (IV) iso-propoxide (Ti[OCH(CH3)2] 4, 97 %) by sol-gel process. In order to elevate photocatalytic activity of the as-grown TiO2 films, argon and oxygen plasmas ignited by microwave (MW) discharge at 300 W under vacuum condition were also used within 5 min. at room temperature. Photocatalytic activity was evaluated by the measurements of the contact angle, FT-IR, XPS, and AFM analysis. In this work, the effect of the plasma on the improvement of hydrophilic property of TiO2 photocatalyst has mainly been investigated. Superhydrophilic property and smooth surface morphology appeared in the UV light irradiation with O2 plasma treatment more than Argon plasma treatment. Based on this work, we confirmed that the oxygen MW plasma treatment method was very reliable method for the synthesis of TiO2 thin films with high catalytic performance.

Properties of SiOxNy Thin Films Deposited with a Single Molecular Precursor by Using RF PECVD

정충경,부진효,배인섭,S.-H. Jeong,W. S. Choi 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.3

We have deposited SiOxNy thin films on both Si(100) and glass substrates by using a tetraethyl orthosilicate (TEOS) single precursor at nitrogen flow rates of 0 100 sccm by using a radiofrequency Plasma Enhanced Chemical Vapor Deposition (PECVD) method. The film growth orientation and microstructural characteristics were analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Deposition at higher nitrogen flow rates results in finer clusters with smaller grain sizes. Moreover, we used UV/Vis and FT-IR spectroscopy and ellipsometry to investigate the optical properties for various nitrogen flow ratios. As-deposited SiO2 films showed an amorphous structure, but samples annealed in an O2 ambient at 900 C showed increased crystallinity. Also, the leakage current densities of the SiO2 and the SiOxNy films annealed at 900 C in an O2 ambient were about 4.0 × 10.8 and 1.5 × 10.7 A/cm2.

퇴원 고객에 대한 수납 창구의 차별화

김충경,김남규,장호정,최혜선,김진숙,홍승애 한국의료QA학회 2005 가을학술대회 Vol.2005 No.2

마케팅 프론티어상 추천사

최충경 한국마케팅과학회 2000 마케팅과학연구 Vol.5 No.-

실험적 타이포그래피 관점에서 본 캘리그래피에 관한 연구

박충경,정원준 커뮤니케이션디자인협회 시각디자인학회 2002 커뮤니케이션 디자인학연구 Vol.9 No.2

Recently, font and visual culture was changed in accordance with supply computer and the trend of experimental typography and replace uniform use of existing font by experimental typography and remarkably Calligraphy's use. It devise visual culture development through the new and artistic Calligraphy expression that create formative element with imply specific character involve the culture of the times Calligraphy's expression. In a restricted sense, Calligraphy is kallos(=beauty)+graphy. on the other hand Calligraphy is beautiful Calligraphy style which have the one and only of autograph. And Calligraphy style have unlimited expressional function. As different country, different character and expression of Calligraphy, in the meaning of Calligraphy is seo-ye(calligraphy) in the East, on the other hand that is beautiful handwriting which can trace the origin back to the man's speech function period in the West. But this study find out Calligraphy's identity of unique genre. And this expression is recognize Calligraphy to be unique visual language in nowaday's visual culture lead up to expression letter's role. And study calligraphy character and expression which iconography (letter that pass out of mind) with unlimited power of expression and free experimentalism.

역행충전시 수복재와 와동 형태에 따른 변연누출의 정량적 분석

한충경,양흥서 大韓齒科保存學會 1990 Restorative Dentistry & Endodontics Vol.15 No.1

輸出環境의 變化에 따른 輸出製品戰略에 關한 硏究

金忠經 충남대학교 경영대학원 1975 經營學論文集 Vol.2 No.-

Environment of world trade has been changing very much. Growth rate of worl trade was only seventeen(17%) to eighteen percent(18%) during the year of 1972, but it was about thirty percent(30%) during 1973. But world trade forcast rate will be less than seven percent(7%) in the following ten years. Ascending price rate of export and import trade was very high during a few last years. Especially oil price of 1974 became five and half (5.5%) times more expensive tha nd that of 1970. Those countries who have natural resourses are nationalizing then resources. European Economic Community was enlarged by the participation of three countries. And it has nine member countris. Enlarged Eunopean Ecoromic Community seems to have a little more exclusionism. It thresteus the system of General Agreement on Tariffs and Trade which has been doing very much role for free trade. American commercial policy is becoming very close to protectionism in order to their national problems. According to the "Commercial Trade Act of 1973" president of the United States has almost all authorities on Foreign Trade and Tariffs. In short, environmental of world trade is getting more difficult. If we have a look at the structure of world trade, we can not miss that volumes of machine trade is to be about thirty percent(30%) of all the trade volumes. Developing countries need very many kinds of machine for the development of their industry. Therefore, developing countries will import machine and advanced countries will export it. In order to stand comparison with world tendency of world trade, the structure of Korean industry has been changing. By 1981, the rate of heavy and chemical industrialization will he fifty one percent (51%). More than ninety percent(90) of all export product of Korea will be industrial product. we found that industry is generally more desirable and profitable than agriculture, heavy and chemical industry than light industry among industries, techonology intensive and capital intevsive and heavy and chamical industry than labour intensive and resource consuming heavy and chemical industry among heavy and chemical industries. So resource consuming heavy and chemical industry is enough if it could supply enough materials for heavy and chemical products for export. In order to enrich our country to dromote to an advanced country, we should achieve the goal through export. Export marketing strategy, pricing phisical districution, advertising pensonal selling and so on. Among many strategies product is the most important, because profitable export could be attained from foreign customers who buy and use the product exported. So exporters should know when, where, what, why and how foreign customers want. With these informations they should manufacture most suitable product economically. We call this export product strategy. And exporters should be able to check the life cycle of export products. Then we can take any suitable strategy to enrich their firmand our country.

COVID-19 사태로 인한 항공사 승무원의 정서적 불안정성이 고용불안에 미치는 영향

조충경(Joe, Choonggyeong),양위주(Yhang, Wiijoo) 대한관광경영학회 2021 觀光硏究 Vol.36 No.7

본 연구의 목적은 COVID-19 사태가 항공사 승무원의 정서적 불안정성이 어떻게 나타나는지 검증한 뒤, 정서적 불안정성과 고용불안에 미치는 영향에 관한 연구이다. 이러한 연구목적을 달성하기 위해 Oliver & Simons(2004)의 ALS(Affective Lability Scales)를 적용하였다. 연구결과에 이하면, 정서적 불안정성은 불안/우울증 , 분노 , 우울증/감소 등 3개 요인으로 구분되었으며, 항공사 승무원의 정서적 불안정성과 고용불안과의 인과관계에서 불안/우울증 과 우울증/우울증 은 주요 변수로 나타났지만, 분노 요인은 영향을 미치지 않는 것으로 나타났다. 본 연구는 COVID-19 사태와 같은 팬데믹 확산은 일반대중의 정서적 불안정성을 야기시키며, 관광산업 가운데 항공산업에도 어려움을 미치고 있지만, 항공산업에 미치는 영향에 대한 연구가 부족한 것에 착안하였다. 연구결과에 따르면, 그 항공사와 임원은 직원들이 과도한 고용불안을 느끼지 않도록 노력하고 정서적 안정 프로그램, 상담, 교육 등 지속적인 관리를 수행해야 함을 알 수 있다. 본 연구결과는 항공사 직원을 대상으로 한 경험적 연구이므로 향후 항공산업의 종사하는 승무원의 효과적인 인적자원관리에 기여할 것이다. The purpose of this study is to verify how the airline employees affective lability appears due to the outbreak of COVID-19, to confirm the relationship between the affective lability and employment insecurity. Oliver & Simons(2004)’ ALS(Affective Lability Scales) was applied to this research and then anxiety/depression , anger , and depression/elation was selected to check affective lability, and then the relationship to employment insecurity was verified. The results of this study suggested that the leading variables affecting the employment insecurity of airline employees were anxiety/depressed and depressed/elations , but the anger factor did not affect it. This study is based on the situation in which the public’s affective labilities and many difficulties on industries were due to COVID-19 outbreak. But little research has been done on airline industry caused by the pandemic spread. Therefore, airlines and executives should try to ensure that their employees do not feel excessive employment insecurity and to carry out continuous management such as affective stability programs, counseling, educations, etc. This study will contribute to an effective human resource management in the aviation industry by conducting an empirical analysis for airline employees.

Comparative Study on Mechanical Properties of MoSiN Multilayer Films Deposited on Si(100) and Ti-covered Si(100) Substrates

정충경,정윤모,한전건,부진효 한국진공학회 2005 한국진공학회 학술발표회초록집 Vol.- No.-