SiC 표면 산화 시간에 따른 열전도 및 전기적 특성 변화

문소윤,임형미,김태언,조광연,안희준 한국공업화학회 2013 한국공업화학회 연구논문 초록집 Vol.2013 No.-

확장된 Alpert’s Correlation을 이용한 구획실 화재시 스프링클러 작동시간 예측

문소윤,허훈,김태훈 한국화재소방학회 2023 한국화재소방학회 학술대회 논문집 Vol.2023 No.2

확장된 Alpert’s Correlation을 이용한 구획실 화재시 스프링클러 작동시간 예측

문소윤,허훈,김태훈 한국화재소방학회 2023 한국화재소방학회 학술대회 논문집 Vol.2023 No.2

Differential CSK 방식을 이용한 원격제어용 전력선 모뎀 구현에 관한 연구

문소윤,김기두 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-

Spread-spectrum transmission systems show the outstanding performance against multi-path fading and narrowband noise, so that they can be utilized in the very noisy channel. CSK/SS(Code Shift Keying/Spread Spectrum) method has been used in the power line modem for remote control of home networking and home automation etc. In this paper, we suggest the implementation of a power line modem which transmits control signals for a remote control. The proposed modem supports a full duplex communication using FDD(Frequency Division Duplex). We also showed how to design each block with a general purpose DSP chip. We propose a system that uses DCSK/SS methods, and analyze the effect of correlation for CSK codes. Lastly, We present the performance comparison between the DS-BPSK system and the proposed system, in which the cyclic CSK method is applied with the use of PN code to transmit data using BPSK modulation and the received data is demodulated by both PN code correlator and BPSK demodulator.

대안교육 특성화중학생의 학교선택동기, 특성화수업만족도와 진로준비행동의 관계에서 학교적응의 매개효과

문소윤,엄우용 한국아동교육학회 2023 아동교육 Vol.32 No.1

The purpose of this study was to exmaine the mediating effect of school adjustment on the relationships among motivations in school choice, satisfaction on specialized curriculum, and career preparation behaviors of alternative education specialized middle school students. To achieve the purpose, a survey was conducted on 104 students of the alternative education specialized middle school in D metropolitan city, followed by in-depth interviews with 14 students of the school to expand and deepen implications from the result of the survey. The results were as follows. First, autonomous motivation, controlled motivation in school choice, and satisfaction on specialized curriculum had no direct effect on career preparation behaviors. Second, autonomous motivation in school choice and satisfaction on specialized curriculum had a positive effect on school adjustment of the students. Third, school adjustment of the students had positive effect on career preparation behaviors. Fourth, the result showed the mediating effect of school adjustment on the relationship not only between autonomous motivation in school choice and career preparation behaviors but also between satisfaction on specialized curriculum and career preparation behaviors. Results proved that there was mediating effect of school adjustment on relationships among the autonomous motivation in school choice, the satisfaction on specialized curriculum and the career preparation behavior of the alternative education specialized middle school students. The results also proved that school adjustment was an important variable affecting career preparation behaviors. Therefore, it is necessary to find a way to increase the school adjustment of specialized middle school students in alternative education. In addition, active support from school is needed to promote the career preparation behaviors. 본 연구의 목적은 대안교육 특성화중학생의 자율적 학교선택동기, 타율적 학교선택동기, 특성화수업만족도와 진로준비행동의 관계에서 학교적응의 매개효과를 검증하는 것이다. 이를 위하여 먼저, D광역시에 소재한 A특성화중학교 재학생 104명을 대상으로 설문조사하였다. 이 결과를 보다 깊이 있게 이해하기 위해 14명의 대안교육 특성화중학생을 인터뷰하였다. 본 연구의 결과는 다음과 같다. 첫째, 대안교육 특성화중학생의 자율적 학교선택동기, 타율적 학교선택동기, 특성화수업만족도는 진로준비행동에 직접적인 영향이 없다. 둘째, 대안교육 특성화중학생의 자율적 학교선택동기와 특성화수업만족도는 학교적응에 정적인 영향을 미친다. 셋째, 대안교육 특성화중학생의 학교적응은 진로준비행동에 정적인 영향을 미친다. 넷째, 대안교육 특성화중학생의 자율적 학교선택동기와 특성화수업만족도가 학교적응을 매개하여 진로준비행동에 정적인 영향을 미친다. 이와 같은 결과는 대안교육 특성화중학생의 경우 자율적 학교선택동기, 특성화수업만족도, 진로준비행동의 관계에서 학교적응의 매개효과가 있고, 학교적응이 진로준비행동에 영향을 미치는 중요한 변인임을 밝혔다. 이러한 결과는 대안교육 특성화중학생의 학교적응을 높일 수 있는 방안을 모색하고 진로준비행동을 촉진할 수 있도록 학교의 적극적인 조력이 필요함을 시사한다.

Preparation of expanded graphite-ceramic core-shell hybrid and its thermal & electrical properties in polymer composite

문소윤,임형미 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1

The generation of waste heat is a significant problem in that it reduces the life spans of devices such as computers and cellular phones. Therefore, there is a large demand for improved means of efficient heat dissipation. Thermally conductive polymer composites offer new possibilities for replacing metal parts in electric systems. Ceramic coated on expanded graphite(EG) hybrid particles were prepared. Ceramic consists of BN and SiO₂, it was prepared by dispersion of BN in the SiO₂ sol prepared by the sol-gel method. The structures of the EG-ceramic(ceramic/EG) core-shell hybrid was evaluated with SEM and XPS. Furthermore, the thermal conductivity of the ceramic/EG-BN-epoxy composites was investigated and the electrical properties were studied through surface resistance and breakdown strength.

학생 행위주체성에 기반한 학생 역량 통합관리 시스템 개발과 활용 방안 모색

문소윤,김하진 사단법인 한국융합기술연구학회 2023 아시아태평양융합연구교류논문지 Vol.9 No.11

본 연구는 학생 행위주체성에 기반한 역량 통합관리 시스템의 개발과 활용 방안을 제안하는 것을 목적한다. 이를 위해 학생들이 대학에서 활용하고 있는 각종 시스템에 대한 인식과 학생의 스스로 역량 개발·관리에 필요한 요구를 확인하여, 학습의 과정과 결과에 있어서 학생이 온전한 주체가 되는 역량 통합관리 시스템의 개발과 활용에 대해 모색하였다. 먼저, 학생들의 인식과 요구를 파악하기 위해서 A대학교의 다양한 시스템을 활용해 교내·외 교육활동에 참여하고 있는 학생을 연구대상자로 선정하여 FGI를 실시하였다. 그 결과 기존 시스템의 문제점에 대한 3가지 주제와 6가지 소주제, 학생들의 새로운 시스템의 기대와 요구사항에 대한 3가지 주제와 8가지 소주제를 도출하였다. 다음으로 학생의 역량 개발·관리를 위한 시스템을 운영하고 있는 4년제 대학 3곳의 시스템 사례를 조사·분석하여 각 대학 시스템의 특징을 확인하였고, 역량 개발·관리의 주체가 여전히 대학에 있어 학생들의 대학 생활과 학습(역량) 등의 이력을 관리하는 정도로 활용되고 있음을 확인하였다. 이와 같은 연구 결과를 바탕으로 본 연구에서는 역량 개발·관리의 주도권을 학생으로 옮겨 본인 역량에 대해 자조(自照) 가능한 시스템 즉, 학생 행위주체성 기반의 학생 역량 통합관리 시스템을 구축·활용하기 위한 대학 지원 방안에 대해 제안하였다. The purpose of this study is to propose a university support plan for the development and utilization of an integrated competency management system based on student agency. To this end, we identified the perceptions of various systems used by students in universities and the needs of students to develop and manage their own competencies, and sought ways to develop and utilize an integrated competency management system in which students are a complete subject in learning. First, in order to understand the perceptions and needs of students, FGI was conducted by selecting students participating in on-campus and on-campus educational activities using various systems of University A. As a result, three themes and six subtopics were derived for the problems of the existing system, three themes and eight subtopics were derived for the expectations and requirements of the new system of students. Next, the characteristics of each university system were identified by investigating and analyzing system cases of three four-year university operating systems for student competency development and management. Through this, it was confirmed that the subject of competency development and management is still in the university and is only used to manage the history (competency) of students' college life and learning. Combining these results, this study proposed a university support plan to transfer the initiative of competency development and management to students to establish and utilize a system that can self-help for their own competencies, that is, an integrated student competency management system based on student agency.

Thermal Conductivities of Epoxy Composites Comprising Fibrous Carbon and Particulate Silicon Carbide Fillers

문소윤,임형미,안희준,이동진 한국고분자학회 2014 Macromolecular Research Vol.22 No.6

Thermal conductivities of epoxy composites consisting of carbon fiber (CF) and particulate silicon carbide(SiC) fillers were investigated. Composites composed of both fillers were found to have a higher packing densityaccording to a void volume, than composites composed of either single filler on its own. The thermal conductivitieswere measured using a laser flash method. The CF- epoxy composite exhibited a higher thermal conductivity thanSiC-epoxy composite for a filler loading of 80 wt%. The thermal conductivity of a mixed-filler composite containing30% CF and 50% SiC by weight was found to be 10.6 W/mK, which is twice the value of that of a CF-epoxy composite,six times greater than that of a SiC-epoxy composite, and approximately 48 times greater than that of unmodifiedepoxy resin. This increased thermal conductivity is due to the fibrous and particulate morphologies of thefillers, which bring about an increase in the number of contact points throughout reducing void volume and increasingdispersibility of carbon fiber, thus resulting in an improved heat transfer path.

우송대학교 철도동아리(W.R.R) 여덟 번째 해외 필드트립 (2017년 8월, 일본규슈철도)

문소윤,전민석,박재민,정수화,김재익,최연철,이하연,홍성민,최영은 한국철도학회 2017 철도저널 Vol.20 No.5

의미연결망 분석을 통한 태권도 선수의 슬럼프 인식구조 탐색

문소윤,장덕선 한국스포츠학회 2020 한국스포츠학회지 Vol.18 No.4

본 연구는 태권도선수가 인식하는 슬럼프를 탐색에 중점을 두어 진행되었다. 슬럼프의 신체적 요인, 심리적 요인 을 추출하고 기존에 질적 연구의 단점으로 지적되는 개인의 주관성 문제를 해결하기 위해 의미연결망 분석방법을 적용하 여 진행하였다. 대⋅실업팀 태권도 선수 200명에게 수집된 자료는 텍스트 정제작업을 진행하였으며, 이후 네트워크 프로 그램인 KrKwic(korean Key Words in Context)를 활용하여 주요 단어의 빈도수와 텍스트 매트릭스 값을 추출하였다. 분석은 태권도선수들이 인식하는 슬럼프, 원인, 겨루기상황에서의 느낌의 변화, 일상생활에 미치는 영향, 극복방법으로 분류되었다. 이에 따른 구체적인 결과는 다음과 같다. 첫째, 태권도 선수가 인식하는 슬럼프는 최종적으로 경기력 저하, 의욕 상실, 자신감 하락의 순으로 나타났다. 둘째, 태권도 선수가 인식하는 슬럼프의 원인은 부상, 멘탈 문제, 경기력 저하 의 순으로 나타났다. 셋째, 태권도 선수가 인식하는 슬럼프 경험 중 겨루기 상황에서 느낌의 변화는 경기력 저하, 자신감 하락, 의욕 상실 순으로 나타났다. 넷째, 태권도 선수가 인식하는 슬럼프가 일상생활에 미치는 영향은 의욕 상실, 무기력, 우울 순으로 나타났다. 다섯째, 태권도 선수가 인식하는 슬럼프 극복 방법은 휴식, 긍정적인 생각, 힐링 순으로 나타났다. This study focused on exploring the slump recognized by Taekwondo players. The semantic network analysis method was applied to extract the physical and psychological factors of slump and solving the problem of individual subjectivity previously pointed out as shortcomings of qualitative research. The data collected by 200 taekwondo players from unversity and semi-profesional team was processed with text refining, and the frequency and text matrix values of major words were extracted using the network program KrKwic (Korean Key Words in Context). The analysis was classified as the slump, cause, change of feeling in the competition situation, impact on daily life, and coping method perceived by Taekwondo players. Specific results from this are as follows: First, the slump recognized by Taekwondo players was finally followed by poor performance, loss of motivation, and decreased confidence. Second, the causes of the slump recognized by taekwondo players were injuries, mental problems, and poor performance. Third, among the slump experiences recognized by Taekwondo players, the change in feeling in the competition was followed by poor performance, a drop in confidence, and a loss of motivation. Fourth, the impact of a slump recognized by Taekwondo players on their daily lives was in the order of loss of motivation, lethargy, and depression. Fifth, the methods of overcoming slumps perceived by Taekwondo players were in the order of rest, positive thinking, and healing.