제조데이터의 활용을 위한 클라우드 연동 방안 연구

류승민,고진석,송병훈 한국경영과학회 2022 한국경영과학회 학술대회논문집 Vol.2022 No.6

해양스포츠 참여자들의 참여요인 중요도와 만족도

류승민,정경회 한국스포츠학회 2022 한국스포츠학회지 Vol.20 No.2

The purpose of this study is to investigate the difference between the importance expected before participation and the satisfaction felt after participation required by marine sports participants. A total of 249 questionnaires were prepared for adults in their 20s or older who have used marine leisure sports facilities nationwide, and 205 of them were adopted as final analysis data. The collected data were processed using SPSS 24.0 and Excel 2016. The main conclusions through the derived research results are as follows. First, when looking at the average value for each factor, the stakeholders were considered important and were found to be satisfied in the physical environment. Second, safety was the highest in the case of importance according to participation factors, and the natural environment was the highest in the case of satisfaction. Third, looking at each quadrant of each question, 11 factors appeared in the I quadrant, 12 factors in the II quadrant where intensive efforts are directed, 9 factors in the III quadrant, which is not considered in priority, and 3 factors in the Ⅳ quadrant, which should be avoided with excessive effort. 본 연구의 목적은 해양스포츠 참여자가 요구하는 참여 전 기대하는 중요도와 참여 후 느끼는 만족도의 차이를 조사하는 것이다. 전국의 해양레저스포츠 시설을 이용해본 20대 이상의 성인을 대상으로 총 249개의 설문지가 작성되었고 그중 205부를 최종 분석자료로 채택하였다. 수집된 자료는 SPSS 24.0과 Excel 2016을 활용하여 자료처리하였다. 도출된 연구결과를 통한 주요 결론은 다음과 같다. 첫째, 요인별 평균값을 보았을 때, 관계자를 중요하게 고려하였으며, 물리적 환경에서 만족하는 것으로 나타났다. 둘째, 참여요인에 따른 중요도의 경우 안전성이, 만족도의 경우 자연환경이 가장 높게 나타났다. 셋째, 문항별 각 사분면을 살펴보면 현상유지를 나타내는 Ⅰ사분면에는 11개의 요인이, 집중적인 노력이 지향되어지는 Ⅱ사분면에는 12개의 요인이, 우선순위에서 고려되지 않는 Ⅲ사분면에서는 9개의 요인이, 과잉된 노력으로 지양되어져야하는 Ⅳ사분면에서는 3개의 요인이 각각 나타났다.

제조데이터의 활용을 위한 클라우드 연동 방안 연구

류승민,고진석,송병훈 대한산업공학회 2022 대한산업공학회 춘계학술대회논문집 Vol.2022 No.6

ESG는 환경과 사회를 변화시킬 수 있는가?

류승민 민주노총 부설 민주노동연구원 2021 이슈페이퍼 Vol.2021 No.20

High Tibial Osteotomy versus Unicompartmental Knee Arthroplasty for Medial Compartment Arthrosis with Kissing Lesions in Relatively Young Patients

류승민,Jae Woo Park,Ho Dong Na,손욱진 대한슬관절학회 2018 대한슬관절학회지 Vol.30 No.1

Purpose: The purpose of this study is to compare the clinical and radiographic outcomes of high tibial osteotomy (HTO) and unicompartmental arthroplasty (UKA) in advanced medial compartment arthritis accompanied by kissing lesions in relatively young patients. Materials and Methods: Forty-five patients were divided into the HTO (n=23) and UKA (n=22) groups. Clinically, we evaluated the Lysholm knee scoring scale, visual analogue scale, Hospital for Special Surgery, and Western Ontario and McMaster Universities Osteoarthritis index scores preoperatively, 6 and 12 months postoperatively, and at the final follow-up. Radiographically, we measured the femoral-tibial angle and mechanical axis deviation preoperatively and at the final follow-up. Results: All clinical outcomes gradually improved in both groups from the postoperative period to the final follow-up. At the final follow-up, all clinical outcomes were slightly better in the UKA group than in the HTO group; however, differences were not statistically significant. Conclusions: HTO is comparable to UKA in terms of clinical outcomes. Thus, the results of this study suggest that HTO might be a good alternative treatment to UKA for medial unicompartmental arthritis accompanied by kissing lesions in relatively young patients.

檀園 金弘道의 個人性 - 文人趣向과 好古ㆍ音律을 중심으로 -

류승민 동아시아고대학회 2020 동아시아고대학 Vol.0 No.60

이 논문은 조선시대(1392~1910)에 활동했던 화가 가운데 가장 유명하고 독보적인 성취를 이루었다고 평가받는 김홍도(金弘道, 1745~1805 혹은 1806)의 특수한 면모를 논했다. 이미 있는 평가에서 주목하지 않은 ‘個人性’을 키워드로 삼아, 김홍도의 개인성을 追究해 보았다. 個人으로서 김홍도는 동시대의 화원화가들과 달리 문인을 지향하는 취향이 선명했고, 당시 사대부들 사이에서 유행했던 好古 趣味를 공유하고 있었고 音律에까지 밝았던 예술가였다. 이런 면모는 그의 회화작품에서도 볼 수 있으며, 주목할 만하다. 김홍도의 개인성을 탐구하기 위하여 이 논문은 먼저 개인성의 개념을 규정하려고 했다. 2장에서 個性과 個人性을 구분하여 전자는 ’Character’임과 달리 후자를 ‘Individuality’로 한정지었다. 김홍도의 individuality는 세 가지 성향으로 구체화하는데, 하나는 ‘文人趣向’이며, 나머지는 ‘好古’와 ‘音律’이다. 이 논문에서는 전자에 소절 하나를 할애하였고, 뒤의 두 항목을 하나의 소절에서 다루었다. 김홍도의 문인취향은 어린 시절에 만난 성숙한 문인 강세황과의 인연에서 출발한 듯하나 정확한 학습과정을 알 수는 없다. 그러나 30대 시절을 지내면서 일정한 단계에 올랐다고 보아야 하는데, 40대가 된 이후 그의 활동이 당시의 문인들과 활발하게 교유하는 양상으로 나타나기 때문이다. 그가 단순한 화원이라는 직업에 국한되었다면 시를 주고 받거나, 악기를 연주하는 등, 문인들의 모임의 일원이 수행해야 할 퍼포먼스를 감당할 수 없었을 것이다. 그와 같은 양태는 그의 3,40대 작품들에 반영되어 나타나기도 한다. 好古는 김홍도가 당시의 여느 화원들과 매우 다른 취미를 가졌음을 보여준다. 17세기 이후 동아시아의 사대부들이 누렸던 閑事 가운데 옛것에 대한 취미는 대표적인 영역인데, 일개 화원이라고 그를 규정한다면 호고는 김홍도로서는 상상하기조차 어려운 취미였다고 할 수 있다. 그러나 그는 음악에 관한 조예와 함께 그 취미를 자기화한 것으로 보인다. 이는 자신의 이미지로 보이는 작품들이나, 음악적 여운을 느끼게 하는 작품들을 남긴 것에서 볼 수도 있다. 김홍도의 개인성은 그 개인에 국한될 수 없다. 그가 신분을 넘어 향유하거나 추구했던 문화적 영역은 그가 시대적 환경의 수혜자였음과 함께 당시 사회의 문화적 지향이 어떤 것인지도 보여주기 때문이다. This thesis focused on the individuality of Kim Hongdo(1745~?), who was a famous painter carried out functions a service for his king in the later Joseon Dynasty. On the key word, ‘Individuality’ which inconspicuous term to the majors who noticed on him, this thesis tried to dig into Kim’s individuality. As a individual, Kim Hongdo was a distinctive professional painter, and oriented the particular culture of literati so that distinguished himself from contemporary painters who servicing to royal clients. And he shared the enjoyment of loving the antiques, and possessed attainments of music or instrumental skills. These features reflected on his painting works. This thesis is required clarification of answer for the question: “What is an individuality?” Therefore, in the 2nd chapter, tried to distinguish ‘character’ and ‘individuality’ as priority, and further, in the sub-chapter, I embodied the ‘individual’ and make it to two sub-concepts: the disposition of the literati and loving the antiques and attainments of music or instrumental skills. Kim’s disposition of the literati pullulated after the encountering a teacher who was a great literati, calligrapher, and painter, Kang Sehwang(1713~1791). But there is no evidences to lighten his course for literatural growing. At the period between thirty and forty, it is clear that he had possessed a literatural accomplishments that shows some level where he was. In that period, he had many relationships with the literati. If he had been limited by his social status, he could not carried out a membership of the elegant gathering which popular among the literati of the later Joseon Dynasty. The dispositions to the antique and music were a representative feature of the literati in the East Asia, and Kim had it, too. He succeeded to embody those cultural tradition which make himself distinguished other professional painters. These appear to his images of himself in his painting works those include literal sonorant too. Kim’s individuality can not be limited ever. The cultural domain that he had and rejoiced shows us that the cultural moving of the late Joseon Dynasty.

DWG-Fenton공정을 이용한 침출수의 처리 및 Fenton공정과의 처리효율 비교

류승민,박희경 대한환경공학회 2006 대한환경공학회 학술발표논문집 Vol.2006 No.12

M&A 제도의 현황과 발전과제

류승민 한국시멘트협회 1993 시멘트 Vol.133 No.-

미량의 H2S 함유 수용액 환경 내 CO2 첨가가 고강도 철강소재의 부식 및 수소침투거동에 미치는 효과

류승민,박진성,방혜린,김성진 대한금속·재료학회 2021 대한금속·재료학회지 Vol.59 No.8

The effects of adding CO2 to low level H2S containing aqueous environment on the corrosion and hydrogen penetration behaviors of high-strength steel were evaluated using a range of experimental and analytical methods. The corrosion rate of the steel sample exposed to a low level of H2S dissolved in an aqueous solution was comparatively higher than the one exposed to a mixture of low concentrations of H2S with CO2 dissolved in the aqueous solution. The higher corrosion resistance of the steel in the mixture of low concentrations of H2S and CO2 was attributed primarily to the three-layer structure of corrosion scale, comprised of an outer Fe-oxide, middle FeS1-X, and inner FeCO3, which formed on the steel sample. In particular, the formation of a thin FeCO3 layer with protective and non-conductive nature may serve as an effective barrier against the penetration of aggressive ionic species in solution, as well as hydrogen atoms formed by cathodic reduction or hydrolysis reactions. Consequently, the hydrogen permeation level, which was measured in a mixture of low-level H2S and CO2, was controlled to a comparatively lower value. Nevertheless, the higher level of hydrogen permeation in a mixture of low levels of H2S and CO2 at the early corrosion stage might increase the potential risk of pre-mature failure by hydrogen-assisted cracking.

Ni 및 Cu 첨가가 고온 산화된 자동차용 초고강도 강재의 부식 거동에 미치는 영향

류승민,성환구,김정길,황중기,이만재,오민석,김성진 대한금속·재료학회 2019 대한금속·재료학회지 Vol.57 No.6

The incomplete elimination of oxide scale formed during the normalizing process can result in severe degradation of the surface and mechanical properties of ultra-strong steels. This study revealed that the formation of oxide scale was highly dependent upon the alloying elements Ni and Cu. Ni-bearing steel showed a much higher oxidation rate, resulting in much thicker scale than Cu-bearing steel. Uneven scale/steel interfaces and oxide penetration along the grain boundary of the steel were clearly observed in the Ni-bearing steel. The difference in the solid solubility limit of Ni and Cu to austenite could lead to the enrichment of Ni and precipitation of Cu at scale/steel interfaces in the two types of steels, respectively. This resulted in the different structure and properties of the oxide scales, which influenced the subsequent corrosion behavior in chloride containing conditions. Linear polarization resistance measurements showed that the addition of Ni and Cu to the steel had a beneficial influence on the corrosion resistance, by suppressing the anodic dissolution and cathodic reduction reactions of Ni and Cu-bearing steels, respectively. This study provided a proposed mechanism for the difference in corrosion behaviors between the two types of steel.