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멜트블로운 부직포의 형태와 물리적 특성을 제어하는 공정기술에 관한 연구
정재석,김미경,고정우 한국표면공학회 2023 한국표면공학회지 Vol.56 No.5
Non-woven fabric is a textile product made by spinning thermoplastic polymers without manufacturing processes such as stretching, doubling, twisting, weaving, and knitting to form a sheet-shaped web in which fibers are tangled with each other, and then combining them by mechanical and physical methods. In addition, the non-woven fabric manufacturing process has various raw material choices, high productivity, so it is a textile manufacturing technology that can have various uses and increase added value. This study was conducted to control the shape and physical properties of products by improving the manufacturing method of melt-blown non-woven fabrics using process technology that easily changes the shape of non-woven fabrics and improves mechanical properties. In particular, it is considered that a non-woven fabric with a thin material shape and improved mechanical properties will be easily applied to a continuous secondary battery manufacturing industry such as roll to roll operation.
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대학생의 불확실성에 대한 인내력 부족과 학교생활소진의 관계: 자기자비로 조절된 경험회피의 매개효과
정재석,안진아 한국청소년학회 2023 청소년학연구 Vol.30 No.10
The purpose of this study was to examine the mediation effect of experiential avoidance relationship between intolerance of uncertainty and college student burnout, and the moderated mediation effect of self-compassion in this path. For this purpose, an online survey was conducted for college student in South Korea, and 311 people’s data were collected. The data were analyzed by using SPSS 26.0 and Spss Process macro 4.1. The result were as follows: First, the mediation effect of experiential avoidance on the relationship between intolerance of uncertainty and college student burnout was significant. Second, the significant moderation effect of self-compassion on the relationship between intolerance of uncertainty and experiential avoidance was found. Finally, Self-compassion moderated the mediating effect of intolerance of uncertainty on college student burnout through experiential avoidance. It suggest that self-compassion can alleviate the path that intolerance of uncertainty on college student burnout through experiential avoidance. Based in these results, the implication and limitation of this study and suggestion for future research are discussed.
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다양한 방적 시스템에 따른 양모 방적사 물리적 특성의 정량적 분석
정재석,김미경,강후창 한국섬유공학회 2023 한국섬유공학회지 Vol.60 No.5
Recently, eco-friendly materials have emerged around the world due to the needfor carbon neutrality. For this reason, the increase in demand for natural fibers and ecofriendlymanufacturing technology using them are becoming important. In this study, thephysical characteristics of spun yarn were compared using undyed wool fibers and dyedwool fibers in the spinning industry. And the structural forms of spun yarn according to thespinning system, such as traditional ring spinning, sirospun, and hybrid sirospun werecompared. In the case of single yarn manufactured in the existing ring spinning machine,the difference in the variation coefficient of the yarn count and the irregularity of theundyed and dyed fibers showed a small level. However, the coefficient of variation of yarncount and the irregularity tended to be significantly lowered in the two folded yarn usingsingle yarn. And the difference between tensile strength and tensile elongation decreasedby a large difference, and the tensile strength and tensile elongation of the two folded yarnusing single yarn tended to increase. In addition, the variation coefficient of the yarn countand the irregularity according to the spinning system tended to increase in the order ofring spinning, sirospun, and hybrid sirospun spinning. However, tensile strength and tensileelongation tended to decrease in the order of ring spinning, sirospun, and hybridsirospun spinning. Therefore, in the future, it is considered important to design an optimizedproduct that satisfies the core requirements of the product's appearance, physical,and economic conditions in consideration of the technical characteristics expressed in thespinning system.
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정재석 한국문학이론과비평학회 2017 한국문학이론과 비평 Vol.74 No.-
The purpose of this study is to reveal the narrative structure of a novel in a Korean novel and to find its meaning. In the novel, it was a problem to be able to use the term ‘second person novel’ in the situation where the text consisting of the narration of the second person ‘you’ was impossible. In this thesis, I regarded the novel, which was the focalizer of the second person ‘You’ as the main focalizer of the novel, as a second - person novel, and conducted research on four novels of Choi Yoon. The research progresses the possibility and meaning of the second person novel in the novel theoretically and analyzed the second person novels of Choi Yoon in two aspects. One looked at the narrative distance between the descriptor and the focus object, and the other approached in terms of its semantic self - reflection. As the second person novel structure is unfamiliar, novels which are only referred to as second person in actual creation are being tried in experimental form. The novels of Choi Yoon who achieved the experimental form using the second person view show their tangible differences. Four novels reveal different relationships between different narrators and narratives, and create new narrative situations. The four novels analyzed can be used in psychological novels despite the formal differences between narrator and subject. 본고의 목적은 한국소설에서 2인칭 소설의 서사구조를 밝히고 그 의미를 찾아보는 데 있다. 현대 서사 이론에서 ‘시점’의 문제를 ‘초점화’의 영역으로 확장시키면서 시점 이론은 보다 정치하게 다루어지고 그 결과 2인칭 소설 이론에 대한 논의도 활발하게 이루어졌다. 본 논문은 소설의 사건 전반에서 2인칭 ‘너’를 주 초점대상으로 삼은 소설을 2인칭 소설로 인정하고 최윤의 네 편 소설을 대상으로 삼아 연구를 진행했다. 연구 진행은 소설에서 2인칭 소설의 가능성과 의미를 이론적으로 정리하고 최윤의 2인칭 소설들을 두 가지 측면에서 분석했다. 그 하나는 서술자와 초점 대상간의 서사적 거리에 주목했고, 다른 하나는 그 의미적 자기 반영성의 측면에서 접근했다. 2인칭 소설 구조가 낯설듯 실제 창작에서 2인칭으로만 지칭되는 소설은 실험적 형태로 시도되고 있다고 볼 수 있다. 2인칭 시점을 사용해 실험적 형식 구현을 이룬 최윤의 소설들은 각각 그 유형적 차이를 보이는데 네 편의 소설이 각기 다른 서술자와 서술대상 간의 다른 관계를 드러내면서 새로운 서술상황을 만들어낸다. 분석한 네 편의 소설이 서술자와 대상 간의 형식적 차이에도 불구하고 심리소설에서 유용하게 사용될 수 있음을 확인할 수 있었다.
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A Case of Primary Pulmonary Lymphoepithelioma-like Carcinoma Misdiagnosed as Adenocarcinoma
정재석,김소리,박승용,정명자,이용철 대한결핵및호흡기학회 2013 Tuberculosis and Respiratory Diseases Vol.75 No.4
Primary pulmonary lymphoepithelioma-like carcinoma (LELC) is rare, with a more favorable prognosis compared with that of other types of non-small cell lung cancers. Herein, we describe an interesting case of primary pulmonary LELC confirmed postoperatively, which had been initially diagnosed as poorly differentiated adenocarcinoma. We suggest that despite the rarity of pulmonary LELC, it should be included as one of the differential diagnoses for lung malignancies. Physicians should consider taking a larger biopsy, especially when histologic examination shows undifferentiated nature.
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