가연성 냉매 누설 시나리오에 따른 언더후드 내부 유동 해석

이승연(Seungyeon Lee),최종민(Jongmin Choi),이대웅(Daewoong Lee),이해준(Haejun Lee),김민수(Min Soo Kim) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2019 No.-

정부출연연구소 연구인력의 직무특성이 조직몰입에 미치는 영향 연구

이승연(Seungyeon Lee),박수경(Soo-Kyung Park) 한국기술혁신학회 2018 기술혁신학회지 Vol.21 No.3

본 논문은 정부출연연구소 연구인력의 직무특성과 조직몰입과의 관계에서 조직공정성의 매개효과를 알아보고자 하는데 목적을 두고 있다. 이를 위해 국가과학기술연구회 소속 정부출연연구소 25곳에 근무하는 연구직 362명을 대상으로 설문조사를 실시하여, 이들 관계를 알아보기 위한 다중회귀분석을 시행하였다. 그 결과, 자율성과 피드백 직무특성이 조직몰입에 정(+)의 영향을 나타내었으며 직무특성 중 자율성만이 조직공정성의 매개효과를 갖는 것으로 나타났다. 본 연구는 기존 연구에서 거의 다루지 않았던 정부출연연구소의 연구인력을 대상으로 직무특성을 발견하고 조직공정성과 조직몰입의 관계에 대한 매개효과를 실증분석한 점에서 의의를 찾을 수 있다. The aim of this study lies on verifying the mediation effect of organizational justice in the relationship between R&D personnel’s job characteristics and organizational performance within their Government-sponsored research institute. For this, a survey was conducted on 362 R&D personnel members from 25 state-sponsored research institutes under National Research Council of Science & Technology, and then, a multiple regression analysis was used to seek any possible relationship. As a result, job characteristics such as autonomy and feedback were found to have positive (+) influence on organizational commitment. In addition, the result of the mediation effect of organizational justice indicated that the impact was made only by autonomy. This study finds its significance in the fact that it revealed the relationship between job characteristics and job satisfaction among R&D personnel in state-sponsored research institutes who have rarely been the source of objectives in related studies, and that it revealed organizational justice mediated the relationship.

정부출연연구소 연구인력의 직무특성이 조직몰입에 미치는 영향 연구

이승연(Seungyeon Lee),박수경(Soo-Kyung Park) 한국기술혁신학회 2018 한국기술혁신학회 학술대회 발표논문집 Vol.2018 No.5

본 논문은 정부출연연구소 연구인력의 직무특성과 조직몰입과의 관계에서 조직공정성의 매개효과를 알아보고자 하는데 목적을 두고 있다. 이를 위해 국가과학기술연구회 소속 정부출연연구소 25곳에 근무하는 연구직 362명을 대상으로 설문조사를 실시하여, 이들 관계를 알아보기 위한 다중회귀분석을 시행하였다. 그 결과, 자율성과 피드백 직무특성이 조직몰입에 정(+)에 영향을 미치며, 직무특성 중 자율성만이 조직공정성의 매개 효과를 갖는 것으로 나타났다. 본 연구는 기존연구에서 거의 다루지 않았던 정부출연연구소의 연구인력을 대상으로 직무특성을 발견하고 조직공정성과 조직몰입의 관계에 대한 매개효과를 실증분석한 점에서 의의를 찾을 수 있다. The aim of this study lies on verifying the mediation effect of organizational justice in the relationship between R&D personnel’s job characteristics and organizational performance within their Government-sponsored research institute. For this, a survey was conducted on 362 R&D personnel members from 25 state-sponsored research institutes under National Research Council of Science & Technology, and then, a multiple regression analysis was used to seek any possible relationship. As a result, job characteristics such as autonomy and feedback were found to have positive (+) influence on organizational commitment. In addition, the result of the mediation effect of organizational justice indicated that the impact was made only by autonomy. This study finds its significance in the fact that it revealed the relationship between job characteristics and job satisfaction among R&D personnel in state-sponsored research institutes who have rarely been the source of objectives in related studies, and that it revealed organizational justice mediated the relationship.

편심하중을 받는 탈착식 스퍼드캔의 링플레이트 보강 효과

이승연(Lee, Seungyeon),유일환(You, Ilhwan),박종섭(Park, Jongsup),지광습(Zi, Goangseup) 한국방재학회 2021 한국방재학회논문집 Vol.21 No.5

탈착식 스퍼드캔은 지반의 조건과 관계없이 잭업바지선의 운용을 가능하게 한다. 일반적으로 탈착식 스퍼드캔은 핀을 활용하여 분리된 푸팅과 레그를 연결한다. 하지만 이러한 구조에서는 핀에 과도한 응력이 유발될 수 있다. 본 연구에서는 이러한 탈착식 스퍼드캔의 구조를 개선하기 위해 스퍼드 캔 상부 및 하부에 링플레이트(상⋅하부링)를 보강하는 안을 제시하였다. 유한요소해석 검증 결과, 하부링 및 상부링 보강안에 의해 연결부분의 응력집중이 완화되었으며, 특히 상⋅하부링은 편심 지지조건에서 더욱 큰 효과가 나타났다. 보강 효과를 검증하기 위해 진행된 모형실험 결과, 상⋅하부링 지지구조의 최대 지지 하중은 하부링 지지구조 대비 120%로 나타났다. 본 연구에서 검증한 보강안을 통해 탈착식 스퍼드캔 설계시 연결부의 안전성을 확보할 수 있을 것으로 판단된다. A detachable spudcan enables the operation of a jackup barge on any seabed. A general detachable spudcan uses a pin to connect the separate footing and leg. However, this type of structure can cause excessive stress on the pin. In this study, a new type of detachable spudcan reinforced with ring plates (upper and lower) is proposed to improve the structural performance of the conventional detachable spudcan. Finite element analysis revealed that the stress concentration in the connection part was relieved by reinforcing the lower and upper rings. In particular, reinforcing both lower and upper rings resulted in superior structural performance under eccentric supported conditions than when reinforcing only the lower ring. The structural strength of the spudcan when both the upper and lower rings were reinforced was found to be 120% of the spudcan as compared to when only the lower ring was reinforced. It is thought that the safety of the connection part can be secured when designing a detachable spudcan using the reinforcement plan verified in this study.

Evaluating User Experience Using Physiological Data from Conversational Interfaces for Interactive TV

Seungyeon Lee(이승연),Chan Hyeok Yun(윤찬혁),Gee Won Shin(신지원),Soo Yeon Kim(김수연),Myung Hwan Yun(윤명환) 대한인간공학회 2020 대한인간공학회 학술대회논문집 Vol.2020 No.6

Objective: This study aims to investigate TV viewers’ user experience (UX) of a conversational agent (CA) that assisted interactions while watching TV. Background: TV is evolving into an interactive product as technology advances, but the TV interface has not changed much. This can limit the UX of interactive TV viewers. Therefore, it is necessary to identify how the use of voice-interactive interface affects the TV users in order to have a better interactive TV experience. Method: To comparatively analyze the UX with the CA interface and the traditional remote control unit (RCU) interface, physiological measurements (skin conductance; SC) for objective data as well as self-report questionnaires were evaluated. Results: Physiological measurement results showed that SC differed between CA and RCU interactions. Most SC data were high at the beginning of the CA interaction but decreased over time. In RCU sessions, SC maintained a constant value or increased. Consequently, CA had a greater effect on the overall attractiveness while having more emotional appeal. Conclusion: Subjective results showed that CA provided a more positive TV experience regarding emotional aspects. Application: Physiological measurement can provide a more detailed and rich interpretation of the emotional changes and cognitive efforts during human-TV interaction, leading to better understanding of the UX meditated by interactive agent.

고온기 토마토 재배 시 측지 방임을 통한 생육 균형 조절

이승연(Seungyeon Lee),이문행(Munhaeng Lee),이희경(Heekyoung Lee),김경제(Kyoungje Kim) 한국원예학회 2022 한국원예학회 학술발표요지 Vol.2022 No.11

이산화탄소 냉매를 적용한 전기차 히트펌프 성능 해석

이승연(Seungyeon Lee),이상욱(Sangwook Lee),김민수(Min Soo Kim) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.4

왕복형 자기냉동시스템 내 양방향 유동 구간의 영향 분석

이승연(Seungyeon Lee),최종민(Jongmin Choi),김민수(Min Soo Kim) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

In this study, we have developed a reciprocating magnetic refrigeration system and analyzed the effect of the bi-directional flow region in the system. This system consists of four active magnetic regenerators(AMRs), and each of them contains around 15.1 g of 1.0~1.4 mm gadolinium chips with 60.4 g in total in the system. Four AMRs can be groups as two according to the magnetization state and two AMRs in each group are connected in series. In the connection region, bi-directional flow occurs due to the direction change of the heat transfer fluid flow according to the magnetization state change. In the experiments, we modified the structure of this region and compared the temperatures of each end of AMRs and the temperature spans, that present the system performance. As the results, we observed that we can reduce the temperature difference occurred at the bi-directional region to 0.1 ℃, which was 2 ℃ in the original system, and also increase the maximum temperature span from 5.8 ℃ to 7.2 ℃ .

왕복형 자기냉동시스템 내 양방향 유동 구간의 영향 분석

이승연(Seungyeon Lee),최종민(Jongmin Choi),김민수(Min Soo Kim) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

In this study, we have developed a reciprocating magnetic refrigeration system and analyzed the effect of the bi-directional flow region in the system. This system consists of four active magnetic regenerators(AMRs), and each of them contains around 15.1 g of 1.0~1.4 mm gadolinium chips with 60.4 g in total in the system. Four AMRs can be groups as two according to the magnetization state and two AMRs in each group are connected in series. In the connection region, bi-directional flow occurs due to the direction change of the heat transfer fluid flow according to the magnetization state change. In the experiments, we modified the structure of this region and compared the temperatures of each end of AMRs and the temperature spans, that present the system performance. As the results, we observed that we can reduce the temperature difference occurred at the bi-directional region to 0.1 ℃, which was 2 ℃ in the original system, and also increase the maximum temperature span from 5.8 ℃ to 7.2 ℃ .

한국어 학습자를 위한 요청 이메일 쓰기 교육 연구

이승연(Seungyeon Lee) 사단법인 한국언어학회 2014 언어학 Vol.0 No.70

This research aims to provide educational content for writing request e-mail based on analysis of Korean e-mails written in formal situations with a goal of fulfilling a request. Upon analysis, the research aims to find the discourse structure as well and pragmatic strategies, in addition based on those observations we will explore linguistic patterns. According to the research, it was found that a general e-mail structure was ‘opening, supportive moves l, request head act, supportive moves II, and closing’. As for request strategies the structure of ‘want statement, hedged performative, conditional appreciation and condition’ was found to be frequently used. Supportive moves strategies had a higher frequency of the use of ‘grounds of request, amplification, and providing related information to the request’. In order for language learners to be aware of these special characteristics found in e-mail writing, there is a need for specified training. This paper aims to suggest educational training to familiarize language learners with the discourse structure, linguistic patterns and request strategies of e-mails in formal situation so that they will be able to successfully communicate through e-mail without pragmatic failures.