무료앱의 품질이 유료앱의 구매의도에 미치는 영향에 관한 연구

이종옥(Jong-Ok, Lee),민금영(Geum-Young, Min),정민호(Min-Ho, Jeong) 대한경영학회 2013 大韓經營學會誌 Vol.26 No.12

블록체인 기반 공급망 추적성 분야 연구 동향 분석

이종옥 ( Lee Jong-ok ),권오훈 ( Kwon Oh-hun ) 한국정보화진흥원 2021 정보화정책 Vol.28 No.2

본 논문의 목적은 4차 산업 핵심 기술 중의 하나인 블록체인에 대한 비즈니스적 관점의 해석을 통해 기술과 경영의 괴리를 축소하여 블록체인의 비즈니스화를 촉진하고, 동 분야에 대한 국내외 연구 동향을 분석하여 향후 연구방향을 제시하기 위함이다. 본 연구에서는 ‘구글학술검색’, ‘ScienceDirect’및 ‘DBpia’를 통해서 식별된 블록체인 관련 연구문헌과 블록체인 기반 공급망 추적성 분야의 연구논문(해외 109편, 국내 6편)을 분석한 결과를 요약하면 다음과 같다. (1) 분산애플리케이션을 지향하는 3세대 블록체인이 등장한 이후 관련 연구가 활성화되고 있다. (2) 주요 연구분야는 기술(공학) 분야는 블록체인의 확장성 영역에, 비즈니스(적용) 분야는 블록체인기반 공급망 추적성 분야에 집중되어 있다. (3) 해외에 비해 국내 연구결과는 매우 열악하다. (4) 향후 4차 산업 사회의 구현과 글로벌 협업을 위해 블록체인을 기술이 아닌 비즈니스 서비스의 수단이라는 인식이 확산되어야 할 것이다. The purpose of this study is to analyze the research trends in the field of Blockchain that is one of the core technologies of the 4^th Industry, and present future research orientation. In this study, (1) Blockchain technologies in business perspective are summarized; (2) analysis criteria of Blockchain fields are established; and (3) results of analysis are presented and future research orientation is proposed. Major findings are as follows: (1) related research is being activate with the advent of the 3rd generation blockchain which aims for distributed applications. (2) major concerns of the technology (engineering) field is blockchain scalability and of the business (application) field is blockchain-based supply chain traceability. (3) Compared to overseas, domestic research results are very poor. (4) to catchup the gap, the spreading of awareness that blockchain is not a technology but a business means is required.

DSLR 카메라와 결합이 가능한 뷰카메라용 멀티커넥터에 대한 연구

이종옥 ( Jong Ok Lee ) 한국사진학회 2010 AURA Vol.0 No.22

The multi-connector(for View Camera) invented in this study can be used on most view cameras with a very few exceptions. Currently, most professional and amateur photographers are using 20-million or greater pixel full-frame digital SLR cameras. Yet, with this invented connector, they can also use their view cameras in combination with their DSLR cameras to produce high-quality photographs. Hence, it becomes possible to use the movement of view cameras along with the latest high-quality lenses and high-end classic lenses. Moreover, the high-quality lenses used on medium format cameras can be used with newly invented pantoscopic lens board to produce fresh experience in shooting. Even the photographs taken by high-priced panorama cameras have distortions; the multi-connector created in this study allows multiple shots to be taken by sliding the DSLR camera side-to-side, which then can be assembled together with Photoshop tools, producing photographs with no distortions and no financial burden on the photographer. The advantages of traditional analog photography that have been advancing for 170 years need to be preserved. The sound harmony of analog photography and digital photography will accelerate the overall advancement of photography.

정지용의 「바다」 연작시에 나타난 수(水)의 상상력

이종옥(Lee, Jong-Ok) 한국문학회 2011 韓國文學論叢 Vol.59 No.-

본고는 동양사상의 토대를 이루는 음양오행(陰陽五行)사상에 주목하면서 논의를 시작하였다. 이러한 논의를 하게 된 계기는 정지용 시의 특징을 해명하기 위한 각축이 「바다」 시편을 통해 개진되었다할 만큼 중요함에도, 서구적 이론에 편중되어 동양사상적 논의는 찾아보기 어려웠기 때문이다. 정지용이 술회한 바처럼 모더니즘시의 탄생 과정에서 예술보다 정치적 요인이 크게 작용했다면, 그의 모더니즘 시의 의의는 현저히 약화될 수밖에 없다. 문학작품은 작가가 태어난 사회의 산물이다. 이에 본고는 정지용의 「바다」 연작시를 작가가 태어난 사회의 문화, 전통, 사상에 깊숙이 내재된 음양오행(陰陽五行論)적인 관점에서 논의하였다. 음양오행(陰陽五行)적인 관점은 감정의 절제를 지향하는 동양화론적인 예술론이나 '안으로는 熱하되 밖으로 서늘하옵기' 등 정지용의 시론에 충실한 것이므로 나름대로 의미가 있다. 서구적인 관점에 입각한 논의가 신선한 감각과 회화적 이미지를 잘 보여준다면 동양적인 사상에 입각한 논의는 작품 속에 숨어 있는 작가의 내면세계 즉, 사상을 잘 보여 준다. 정지용의 「바다」 연작시에 나타난 수(水)의 상상력은 그의 내면세계에 있는 존재론적 고뇌의 실체를 구체적으로 들여다 볼 수 있게 해주었다. 「바다」 연작시에 대한 논의 결과, 「바다」 연작시에 나타난 수(水)의 상상력의 핵심은 '음지(陰地)가 양지(陽地)되고 양지(陽地)가 음지(陰地)된다'는 것이다. 이는 음양오행(陰陽五行)사상의 기본원리이며 수(水)의 순환성이다. 여기에 기대어 시인이 말하고자하는 것은 '바다'에 나타난 '생명성 저장'의 이미지나 '기다림'의 이미지에 내포된 소생 가능성 즉 희망이었다. 「바다」 연작시에 나타난 수(水)의 상상력은 연작시를 관통하는 주제인 생명소생, 즉 희망을 부각시킴으로써 소묘적인 회화성 속에 내재된 정지용의 현실인식 혹은 현실에 대한 대응방법을 구체적으로 보여주었다. 「바다」 연작시에서 화자의 시선이 줄곧 내면을 향해 있기 때문에 만해, 상화, 육사처럼 강렬한 현실인식을 밖으로 드러내지는 않았으나 생명 소생의 필연성을 통하여 희망을 암시하였다는 점에서 의의가 있다. 「바다」 연작시에 나타난 수(水)의 상상력은 존재론적 고뇌의 과정한 가운데 펼쳐진 것으로 존재의 안온함이 필연적 귀결이다. 이는 정지용의 내면세계가 지향하는 바는 존재론적 안전감을 누릴 수 있는 삶의 주체'로 거듭나는 것이었음을 보여주는 것이다. 아울러 수(水)의 상상력은 후기 '산시편'으로 나아가는 첩경이 되는 것임을 보여주었다. '바다'에서 '산'으로 공간은 이동되었지만 본질적으로 같은 사상을 공유하고 있었던 것이다. This piece of writing began its discussion as focusing on an idea of Yin-Yang Five Elements (陰陽五行) that form a foundation of Orientalism. The reason for such discussion is that it is difficult to find oriental discussions about competitions to explain characteristics of poetry by Jeong Ji-Yong although they are important as much as to be expressed through poetry because its is concentrated on western ideas or theories. If political factors rather than art were applied in the birth process of Modernism poetry as Jeong Ji-Yong speaks, then the meaning of Modernism poetry in his work has no option but to be weakened. Literary works are the fruits of a society where the writer was born. This paper discussed about poetry series 「Ocean」 by Jeong Ji-Yong in the Yin-Yang Five Elements (陰陽五行論) perspective that is deeply inherited in culture, tradition, and idea of a society where the writer was born. The Yin-Yang Five Elements perspective an orientalism art theory that aims moderation of emotion, but it has significance as being faithful to poetics of Jeong Ji-Yong in connection with 'passionate on the inside but cool on the outside. If discussions based on western ideas or theories show a fresh sense and a pictorial image then discussions based on oriental ideas reveal the inner world of the writer, in other words philosophy, that is hidden under the work. Imagination of water expressed in poetry series 「Ocean」 of Jeong Ji-Yong allows to look into true nature of ontological agony inherent in his inner world. As a result of discussing poetry series 「Ocean」 by Jeong Ji-Yong, the key of imagination of water in poetry series 「Ocean」 is that 'shade become light and light becomes shade'. It is the fundamental principle of Yin-Yang Five Elements (陰陽五行) and also circulativity of water (水). What the poet wanted to speak was possibility of revival, hope, that is involved in the image of liveliness preservation or the image of waiting appeared in 'ocean'. Imagination of water presented in poetry series 「Ocean」 displayed Jeong Ji-Yong's perception on reality underlying in delineative pictorialization or corresponding measures against reality by emphasizing revival of life, which is hope, that penetrates the whole poetry series. It is important that it suggested hope thorugh inevitability of life revival even through strong perception on reality as Manhae, Sanghwa, and Yuksa is not revealed on the outside because the narrator's eyes are facing the inner side. Imagination appeared in poetry series 「Ocean」 is spread in the middle of process of ontological anguish, and peace of existence is an inescapable consequence. This shows the inner world of Jeong Ji-Yong was reforming as a main agent of life to enjoy an ontological sense of security. In addition, internal agony in poetry series 「Ocean」 became a shortcut to step forward to the following mountain poetry. Space has been moved to a 'mountain' to the 'ocean', but it essentially shares same idea. Lastly, this writing hopes that analysis on poetry 「Ocean」 can imply context with the latter poetries or become an opportunity to expand understanding on the path of Jeong Ji-Yong's poetries.

복부검사에 있어 관전압 제어 software의 유용성에 관한 연구

이종옥(Jong Ok Lee),이혜진(Hye Jin Lee),김홍식(Hong Sik Kim),임기빈(Ki Bin Im),강성호(Sung Ho Kang),임재식 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.1

I. Purpose The purpose of this study is to compare and analyze quantitatively and qualitatively dose and image quality between the group using no tube voltage control software and the group using tube voltage control software and noise reduction software and so examine the usefulness of examination methods using tube voltage control software and noise reduction software. II. Materials and methods Among the patients who had visited this Hospital and had received abdominal CT examinations from June to July 2011, this study selected 100 patients using no tube voltage control software and 100 patients using tube voltage control software. 1. Dose By using the total CTDIDLP values indicated on the monitor after examinations, this study compared and analyzed the doses between the group using no tube voltage control software and the group using tube voltage control software. 2. Quality of image This study divided the group using no tube voltage control software and the group using tube voltage control software and noise reduction software simultaneously and so compared their contrast noise ratio(CNR). This study selected 50 patients by each group at random and so measured aorta, portal vein, liver, and psoas muscle for CNR. CNR was calculated by the following formula(Formula-1). (Target HU - Target Noise)/Target Noise, (Aorta HU - Aorta Noise)/ Aorta Noise (식-1) 3. Noise reduction software validation This study evaluated the usefulness of noise reduction software by using diluted contrast agents. In order to obtain the range similar to 50~300, that is, the mean value of aorta, portal vein, liver, and psoas muscle, which was used in clinical studies, this study diluted physiological saline 40 ml and contrast agent 1.5, 1.2, 1.0, 0.8, 0.5, and 0.2 ml in 6 syringes, and then acquired the control groups which were regarded as references. In order to evaluate tube voltage control software and noise reduction software, this study decreased gradually exposure conditions and so acquired the experimental groups which increased HU and noise value. The control groups as reference images acquired their images in the condition of 120 kVp and 200 mAs. The experimental groups for comparison acquired their images in the condition of 100 kVp and 100 mAs. The experimental groups used noise reduction program and so recomposed images by 5 stages and then were compared with the control groups for noise values. III. Result The mean age, scan range and CTDIDLP value of the group using no tube voltage control software were Age 59.6, 495.1, and 468mGycm. In contrast, the mean age, scan range and CTDIDLP value of the group using tube voltage control software were Age 58.4, 494.7, and .265.6mGycm. In order to test the significance between groups, this study conducted independent T-test. According to such results, gender (p=0.462) and range(p=0.948) showed no significant difference. However, mean CTDIDLP values decreased by 43% in the group using tube voltage control software and also showed the statistically significant difference(p=0.000). According to the results of comparing with CNR which was set up as the reference in order to measure the quality of images, the group using tube voltage control software increased HU and noise values in comparison with the group using no tube voltage control software. The group using both tube voltage control software and noise reduction software simultaneously could decrease noise values without changing HU values greatly in comparison with the group using only tube voltage control software and also showed statistically significant results. Also, according to the results of comparing noise values, in using the noise reduction software of Stage 2-3, the noise value similar to that of the control group could be obtained. IV. Conclusion This study tried to examine whether using tube voltage control software could decrease dose and using noise reduction software could decrease the occurrence of no 복부 CT검사에 있어 관전압 제어 software를 사용하지 않은 그룹과 관전압과 noise reduction software를 적용한 그룹의 선량과 영상의 질을 정량, 정성적으로 비교 분석하여 관전압과 noise reduction software를 적용한 검사 방법의 유용성에 대해 알아보고자 한다. 대상 및 방법 2011년도 6~7월까지 본원에 내원하여 복부 CT검사를 시행한 환자 중 관전압 제어 software를 사용하지 않고 검사를 시행한 환자 100명과 관전압 제어 software를 적용하여 검사를 시행한 환자 100명을 무작위로 선정하였다. 1. 선량 검사 후 모니터에 표시되는 Total CTDIDLP 값을 사용하여 관전압 제어 software를 사용하지 않은 그룹과 관전압 제어 software를 사용한 그룹의 선량을 비교 분석하였다. 2. 영상의 질 관전압 제어 software를 사용하지 않은 그룹과 관전압 제어와 noise reduction software를 동시에 사용한 두 그룹으로 나누어 contrast noise ratio(이하 CNR)를 비교하였다. 각 그룹당 50명을 무작위로 선정하였으며 CNR은 Aorta, Portal vein, Liver, Psoas muscle을 측정하였다. CNR은 아래의 식으로 구하였다 (식-1). (Target HU - Target Noise)/Target Noise, (Aorta HU - Aorta Noise)/ Aorta Noise (식-1) 3. Noise reduction software validation 조영제 희석 Sample을 이용하여 Noise reduction software의 유용성을 평가하였다. 임상연구에서 사용된 Aorta, portal vein, liver psoas muscle의 평균 HU값인 50~300과 유사한 범위를 얻기 위해 6개의 syringe에 생리식염수 40ml와 조영제 1.5, 1.2, 1, 0.8, 0.5, 0.2 ml를 희석한 후 기준이 되는 대조군을 구하였다. 관전압 제어 software와 noise reduction software의 평가를 위해 노출조건을 점차적으로 감소시켜 HU와 noise값이 증가된 실험군을 구하였다. 기준 영상인 대조군은 120 kVp, 200 mAs, 비교를 위한 실험군은 100 kVp, 100 mAs 조건에서 영상을 획득하였고, 실험군은 noise reduction 프로그램을 이용하여 5단계로 영상을 재구성한 후 대조군의 noise 값과 비교 분석하였다. 결과 관전압 제어 software을 사용하지 않은 그룹의 평균나이, 스캔범위, CTDIDLP 값은 59.6세, 495.1, 468.5mGyㆍcm이었고, 관전압 제어 software을 사용한 그룹은 58.4세, 494.7, 265.6mGyㆍcm이었다 그룹 간 유의성 검증을 위해 실시한 independent T-test 결과, 성별(p=0.462)과 range(p=0.948)에서는 유의한 차이를 보이지 않았다. 그러나 평균 CTDIDLP 값은 관전압 제어 software를 사용한 그룹에서 43% 감소하였으며 통계적으로도 유의한 차이(p=0.00)를 보였다. 영상의 질을 측정하기 위해 기준으로 설정한 CNR을 기준으로 결과를 정리하면 관전압 제어 software를 사용하지 않은 그룹과 비교하여 관전압 제어 software를 사용한 그룹에서 HU값과 Noise값이 증가되었고, 관전압 제어 software를 사용환 그룹과 비교하여 관전압 제어 software와 noise reduction software를 함께 사용한 그룹에서 HU값의 큰 변화없이 Noise를 감소시킬 수 있었으며, 통계적으로도 유의한 결과를 나타냈다 또한, 실험군의 Noise 값을 비교한 결과 2-3단계 Noise reduction. software 적용 시 대조군과 유사한 Noise 값을 얻을 수 있었다. 결론 관전압 제어 software를 이용한 선량감소 효과와 저 관전압 사용으로 인한 noise의 발생을 software 처리과정을 통해 감소시켜 영상의 진단적 가치를 유지할 수 있는가를 알아보고자 하였다. 관전압 제어 software의 사용으로 인해 선량을 40% 정도 감소시킬 수 있었으며, noise 제거 software의 적용은 저 관전압 사용으로 인한 영상의 noise 증가를 관전압 제어 software를 사용하지 않고 촬영한 영상의 noise와 비슷한 수준으로 감소시킬 수 있었다. 따라서 복부 CT 검사에 있어 관전압 제어 software와 noise 제거 software의 적용은 진단적 영상의 질을 담보함과 동시에 선량을 감소시킬 수 있는 방법일 것이다.

윤동주 시에 나타난 선비의식의 양상

이종옥(Lee, Jong-ok) 한국문화융합학회 2006 문화와 융합 Vol.28 No.-

This dissertation began from realizing the excessive lack of researches for Korean ideology compared to sufficiency of researches of Western ideologies for Yoon Dong Ju and that the evaluations of him as a national poet is so controversial, as his life and works do not reveal clear resistance. He was a scholar-type poet with a soft and warm nature, but strong will in the inside. Therefore, this dissertation studied what pity and shame that appears frequently in his poems through scholars perspective. Pity that appears frequently in Yoon Dong Jus poems is the image of humanity, a virtue a scholar must have. The scholar nature of Yoon Dong Ju, which is always soft and warm is well shown through his poems. Humanity is the mind to give humanistic, benevolent, kind love to people, and also a mind to sympathize for others. His love began at affection for the family for parents and siblings and widened its scope to brother? neighbor? all human being. The affection(pity) in his poems are well represented through his strong will for independency. The image of pity that comes from inside of him based on his scholars mind made his will for nurturing of virtue and will for independency even stronger. Shame that appears frequently in Yoon Dong Jus poems is the image of justice, which is a virtue that scholars must have. His scholars nature, with soft and warm on the outside and strong will in the inside, is well shown in his poems. Justice originates from shame that one feels from doing something wrong. The reason shame is a dominant image in his poems are actually based on his scholars mind, the image of shame aroused from justice makes his nurturing of virtue and will for independency even stronger. The image of pity and shame are revealed as pain, sadness, humiliation, hatred, and pity for others, and unified his will for independency. Yoon Dong Ju was not a fighter-type, but a soft on the outside and strong in the inside-type scholar. This dissertation unified him as a poet and poetic speaker by revealing his strong will towards independence in union without any inflection through his life and work until he was arrested after writing, Poet written Easy ¹by Japanese police. Through this dissertation, the justice that Yoon Dong Ju is a national poet is rose based on our ideology.

고급 중형렌즈의 DSLR적용을 위한 실험

이종옥 ( Jong Ok Lee ),안시준 ( Si Joon An ) 한국사진학회 2012 AURA Vol.0 No.26

This study was done to prove how high-quality analog lenses (for film cameras) can be used efficiently in midst of recent influx of digital cameras. The benefits of using semi format camera lens on DSLR are explained in this study supported by empirical data. Specifically, the study focuses on resolution measurements that can be used to infer the lens quality. For this study, Canon Zoom Lens (24-70mm 1;2.8 L) and popular semi format camera lenses with similar focal distance were used. Moreover, Simenstar Resolution Chart was used to measure the resolution and IE Analyzer was used to analyze the data. The results showed that semi format camera lens produces higher resolution that regular DSLR lenses. Also, closing the aperture was found to decrease overall resolution but it also decreases the resolution gap between the focus area and the peripheral area. The study discusses two major findings: 1) using a high quality semi format camera lens produces higher quality photographs than using a DSLR lens, and 2) the relatively low price of analog lenses offer an economical path in producing high quality photographs.

무료앱 사용경험에 따른 유료앱의 구매에 관한 연구

이종옥(Jong-Ok, Lee),민금영(Geum-Young, Min),임선영(Sun-Young, Lim) 국제e-비즈니스학회 2014 e-비즈니스 연구 Vol.15 No.1

양측성 경골하 부골 1례 보고

이종옥(Jong Ok Lee),권순원(Soon Woun Kwon),이원갑(Won Kap Lee) 대한정형외과학회 1981 대한정형외과학회지 Vol.16 No.4

국내 스마트폰 사용자들의 앱북 구매행위에 미치는 영향요인 연구

이종옥(Jong-Ok Lee),김용문(Yong-Moon Kim) 한국전자거래학회 2013 한국전자거래학회지 Vol.18 No.3

국내 스마트폰 사용자들의 앱북 구매의도에 미치는 영향요인에 대하여 알아보기 위해 Venkatesh 등이 제안한 UTAUT 모형을 기반으로 검증된 4개의 핵심 변인들(성과기대, 노력기대, 사회적 영향, 촉진조건) 외에 ‘비용’ 변인을 추가로 사용하여 그 영향정도를 검증하였다. 그 결과, 정보기술과 관련된 많은 선행연구들을 통해 입증된 UTAUT 모형 변수들의 가설들이 본 연구에서도 대체적으로 지지됨을 확인할 수 있었다. 다만, 촉진조건은 스마트폰을 통한 앱북의 구매행위에 영향을 미치지 않는 것으로 조사되었다. 또한 조절변수로 제안된 ‘연령’과 ‘경험’은 독립변수들을 통해 구매의도 및 구매행동에 대부분 조절효과를 보이는 것으로 나타났다. 본 연구는 향후 앱북 서비스와 유사한 뉴미디어의 수용 및 구매행위에 관련한 연구를 수행하는데 새로운 통합모형을 제시한 선행연구로써 학문적 의의가 있다. 또한 앱북 관련 기업에는 앱북의 유용성, 사용 용이성, 비용, 주변인들의 사회적 영향력에 의해 앱북을 구매하려는 의도가 있음을 밝힘으로써 실무적 시사점을 제시하였다. In order to research the factors influencing on the intentions for smart phone users to purchase “App-Book” in Korea, the study examines the levels of influences using on an additional variable, “cost”, as well as the four key variables(performance expectancy, effort expectancy, social influence, and facilitating conditions) proposed by Unified Theory of Acceptance and Use of Technology(UTAUT; Venkatesh et al., 2003) validation. The result of the research confirms that the hypotheses of UTAUT model variable are generally supported by the information technology and many related previous researches. There is one exception, however, that facilitating conditions do not influence on the App-Book purchasing behavior by smart phone. It is revealed that the “age” and “experience” of the independent variables, as the proposed control variables, are most visible effect of control on the purchase intention and purchase behavior. This study has an academic significance of presenting a new integrated model to perform the research of the similar next App-Book services and purchase behavior related to the acceptance of new media. It also clarifies to the related companies that the usefulness of App-Book, the easiness of use, the cost and the social influence of purchasing App-Book by Outsider’s intent. These aspects have practical implications as being presented.