나노튜브 전극 기반 양자점 감응 태양전지 구현을 위한 투명한 상대전극

김재엽,Kim, Jae-Yup 한국표면공학회 2019 한국표면공학회지 Vol.52 No.1

Anodic oxidized $TiO_2$ nanotube arrays are promising materials for application in photoelectrochemical solar cells as the photoanode, because of their attractive properties including slow electron recombination rate, superior light scattering, and smooth electrolyte diffusion. However, because of the opacity of these nanotube electrodes, the back-side illumination is inevitable for the application in solar cells. Therefore, for the fabrication of solar cells with the anodic oxidized nanotube electrodes, it is required to develop efficient and transparent counter electrodes. Here, we demonstrate quantum dot-sensitized solar cells (QDSCs) based on the nanotube photoanode and transparent counter electrodes. The transparent counter electrodes based on Pt electrocatalysts were prepared by a simple thermal decomposition methods. The photovoltaic performances of QDSCs with nanotube photoanode were tested and optimized depending on the concentration of Pt precursor solutions for the preparation of counter electrodes.

나노튜브 전극을 기반으로 한 플렉서블 양자점 감응 태양전지

김재엽,Kim, Jae-Yup 한국분말재료학회 (*구 분말야금학회) 2019 한국분말재료학회지 (KPMI) Vol.26 No.1

Quantum dots (QDs) are an attractive material for application in solar energy conversion devices because of their unique properties including facile band-gap tuning, a high-absorption coefficient, low-cost processing, and the potential multiple exciton generation effect. Recently, highly efficient quantum dot-sensitized solar cells (QDSCs) have been developed based on CdSe, PbS, CdS, and Cu-In-Se QDs. However, for the commercialization and wide application of these QDSCs, replacing the conventional rigid glass substrates with flexible substrates is required. Here, we demonstrate flexible CISe QDSCs based on vertically aligned $TiO_2$ nanotube (NT) electrodes. The highly uniform $TiO_2$ NT electrodes are prepared by two-step anodic oxidation. Using these flexible photoanodes and semi-transparent Pt counter electrodes, we fabricate the QDSCs and examine their photovoltaic properties. In particular, photovoltaic performances are optimized by controlling the nanostructure of $TiO_2$ NT electrodes.

폭발물 탐지견 도수사들의 폭발물 탐지업무에 관한 인식 연구

김재엽,김일곤,Kim, Jae Yup,Kim, Il Gon 한국융합보안학회 2018 융합보안 논문지 Vol.18 No.1

이 연구는 세계적으로 국가뿐만 아니라 민간인들을 대상으로 폭발물 테러가 빈번히 발생하고 있는 시점에서 다양한 기계장치와 인력을 배치하여 폭발물 탐지를 실시하고 있으나 기계장치의 오류, 인간의 감지능력 한계로 인하여 완벽한 폭발물 테러 예방이 어려운 상황임에 주목하였다. 따라서 이 연구는 폭발물 탐지견 도수사들의 인식을 분석을 토대로 폭발물 탐지견 활용을 통해 다양한 형태의 폭발물 테러로부터 국가중요시설 및 대형민간 시설과 시설 이용자들의 안전을 도모하기 위해 폭발물 탐지견 활용의 필요성을 인식하고 현재 문제점으로 나타나고 있는 상황에 대하여 개선책을 제시하고자 하였다. 도출된 결과는 첫째, 국가중요시설 및 대형 민간시설에 대한 폭발물 탐지견 도입 의무사항을 법률제도로서 입법화하는 것이다. 둘째, 폭발물 탐지견의 탐지능력을 검증하기 위하여 폭발물 탐지견의 인증제도를 도입하는 것이다. 셋째, 폭발물 탐지견을 운용하는 전문 도수사 활성화를 위한 전문 인력 양성제도를 도입하는 것이다. This study conducted a perfect detection of explosives by placing various devices and personnel in place of terrorist bomb detection in a situation that is difficult to detect and protect against the use of explosives not only in countries but also in civilians. The result is that the legal system applies, first, the obligation to introduce bomb-sniffing dogs for national critical and large civil facilities. Secondly, it introduces a certification system for bomb-sniffing dogs to verify their detection capabilities. Third, it is to introduce a system for fostering expert manpower to activate expert water supply companies that operate bomb-sniffing dogs.

전시 작전통제권 전환 이후의 대북 군사전략

김재엽 ( Jae Yup Kim ) 한국군사학회 2007 군사논단 Vol.51 No.-

태권도 지도자의 직업의식에 따른 직무만족 차이와 영향

김재엽 ( Jae Yup Kim ),김창호 ( Chang Ho Kim ) 대한무도학회 2009 대한무도학회지 Vol.11 No.3

본 연구는 태권도 지도자의 배경변인에 따른 직업의식 및 직무만족에 대하여 비교하고, 직업의식이 직무만족에 어떻게 영향을 미치는가에 대한 분석에 연구 목적을 두었다. 연구대상은 지역정보를 활용하여 영호남 지역의 태권도 도장에서 지도자로 종사하는 236명을 대상으로 직업의식과 직무만족에 대한 설문조사를 실시하였고 유효한 198명의 응답 결과를 바탕으로 독립 t-검정과 일원변량분석, 중다회귀분석을 실시하였다. 태권도 지도자의 배경변인 중 학력에 따른 차이는 나타나지 않았으며, 연령과 소속협회에 따라 직업의식과 직무만족에서 차이(p<.001, p<.01)가 나타났다. 중다회귀분석 결과 직업의식이 직무만족에 유의한 영향을 끼치는 것으로 나타났다(p<.001). 이는 태권도 지도자의 직업의식 고취가 직무만족을 높일 수 있다는 것을 의미한다. 태권도 지도자 개인과 소속협회 간의 긴밀한 협조와 직업의식과 직무만족을 높일 수 있는 지도자 교육과 연수 프로그램이 운영되어 실제적인 혜택이 주어질 때 궁극적으로 태권도의 지속적인 발전에 기여할 수 있을 것으로 예상된다. The purpose of this study is to compares Vocational Consciousness and Job Satisfaction, analyze and confirm the effects of Vocational Consciousness and Job Satisfaction according to Taekwondo Master`s underlying indicators. Performed survey on Vocational Consciousness and Job Satisfaction for 236 Taekwondo Masters as study sample in Youngnam/Honam region using local information. Perform Independent Sample t-Test, Univariate Analysis of Variance Analysis, and Multiple Regression Analysis for 198 valid response results. There was no difference caused by academic career from the underlying indicators, but there were differences (p<.001, p<.01) in Vocational Consciousness and Job Satisfaction according to age and Association they belong to. Multiple Regression Analysis result indicates that Vocational Consciousness causes significant effect to Job Satisfaction (p<.001). As a result, this means that enhancement in Vocational Consciousness can improve Job Satisfaction. It is estimated that practical favor of close relationship between individual Taekwondo Masters and their Association, and favor of leader training and education program operation to improve Vocational Consciousness and Job Satisfaction will contribute continuous development in Taekwondo eventually.

학교폭력 피해경험이 우울에 미치는 영향에서 가족요인의 조절효과

김재엽 ( Jae Yup Kim ),정윤경 ( Yun Kyung Chung ) 한국가족사회복지학회 2007 한국가족복지학 Vol.19 No.-

무독성 양자점 감응형 태양전지 연구동향

김재엽(Jae-Yup Kim),고민재( Min Jae Ko) 한국태양광발전학회 2015 Current Photovoltaic Research Vol.3 No.4

Over the last two decades, quantum dot (QD) solar cells have attracted much attention due to the unique properties of QDs, including band gap tunability, slow hot electron cooling, and multiple exiton generation effect. However, most of the QDs employed in photovoltaic devices contain toxic heavy-metals such as cadmium or lead, which may limit the commercial application. Therefore, recently, heavy-metal-free QDs such as Cu-In-S or Cu-In-Se have been developed for application in solar cells. Here, we review the research trends in heavy-metal-free QD solar cells, mainly focusing on Cu-In-Se QD-sensitized solar cells (QDSC).

노인들의 댄스스포츠 참여시 발생하는 상해부위 및 원인 탐구

권순정(Kwon, Soon-jung),김재엽(Kim, Jae-yup),허정행(Hur, Jeong-haeng) 한국사회안전학회 2012 한국사회안전학회지 Vol.8 No.2

본 연구는 노인들이 댄스스포츠 활동에 참여하면서 발생하는 상해부위 및 원인을 탐구 하는데 목적이 있다. 본 연구는 연구 참여자 개개인의 상황이나 환경에 따라 심리적 요인이 다르므로 질적 연구방법을 사용하였으며, 자료 수집은 2012년 6월부터 2012년 9월까지 하였다. 참여자들은 댄스스포츠 전문가 1인과 대학에서 안전교육 및 응급처치를 담당하는 대학교수 2인의 도움을 얻어, 주2회 이상, 1회 50분, 기간은 1년 이상 댄스스포츠에 참여하고 있으며 참여 중 상해의 경험이 있는 자들로 선정하였고, 연령은 노인복지관이용이 가능한 65세 이상으로 하였다. 본 연구의 참여자들은 남자 4명 여자 5명으로 총 9명으로 구성되었다. 본 연구의 결과로 노인들의 댄스스포츠 참여시 발생하는 상해부위는 세부적으로 발등, 발뛰꿈치, 발톱의 부위를 말하고 있으며. 어깨와 손등, 얼굴과 허리도 상해 위험에 노출되어 있다고 말하고 있다. 또한 댄스스포츠 참여시 발생하는 상해원인으로는 활동하는 장소가 너무 비좁다고 말하고 있으며, 수준별 학습으로 초보자의 익숙하지 못한 스텝이 상해의 원인이라고 말하고 있으며, 여자들의 긴 손톱과 손가락의 장신구가 상해의 원인으로 작용하고 있다고 말하고 있다. 본 연구에서는 노인들을 대상으로 댄스스포츠 중 라틴댄스 참가자를 중심으로 연구가 이루어졌으나 종목과 대상의 다양한 측면에서의 연구가 이루어진다면 앞으로 발생할 수 있는 상해예방에 도움이 되리라 사료된다. The aim of this study is to inquire into the position of the injury occurring while participating in the elderly’s dance sports and its cause. This study used a qualitative research method as the research participants’ psychological factors are different according to individual circumstances or environment, and data collection was conducted from June, 2012 until September, 2012. The research participants, through the assistance from one expert in dance sports and two college professors in charge of safety education and first aid, selected those who were participating in dance sports for more than two times a week with 50 minutes in one dance training session for more than one year, and had experience in getting injuries in the middle of participating in it as the research subjects, and limited the subjects’ age to more than 65 available for the senior welfare center. The participants in this research consisted of a total of 9 persons including 4 males and 5 females. The results of this research found that the detailed positions of injuries occurring at a time of the elderly’s participating in dance sports were the top side of the foot, the heel, and toenails, and the shoulders, the back of one’s hand, face and waist were exposed to the danger of injuries as well. In addition, as the cause of injuries happening at a time of participating in dance sports, the research results indicated the much too compact space for dance sports, and beginners’ unskillful stepping posture through the level-based lesson; in addition, the research results found that women’s long fingernails and finger accessories were contributing to their injuries. This study did research on this topic with focus on the elderly participants in Latin dance, but it is thought that it would be helpful in preventing injuries that might happen if the research from diverse aspects of events and research subjects could be done.

경호관련학과 대학생들의 학과만족도에 관한 조사 연구

김상진 ( Sang Jin Kim ),김재엽 ( Jae Yup Kim ) 한국스포츠리서치 2007 한국 스포츠 리서치 Vol.18 No.4

After ten years` absence of being created the departments of Security Relation. Survey about the department satisfaction index is quite important to secure qualitative resources of private security businesses. Approximately 56 departments of Security relation are creating and managing but each university has many problems to manage its departments. Specially, there are some of the most sensitive problems, such as relationship between professors and students, contents of text and a curriculum, course after graduating and social perception about the departments. Opening and managing a new department unrelated the course of students is a one-sided management as well as throwing up the low qualitative manpower resources. Therefore university management of departments is very important. Perceptional standard of a department through the department satisfaction of Security Department (students) is closely connected with students` course. So this study made a close inquiry into individual variation about the department satisfaction, differeces of the department satisfaction between two-year colleges and colleges and differences of the department satisfaction among the 7 colleges.

TEMPCORE 철근의 마디ㆍ리브 나사식 기계적 이음법 개발에 관한 연구

최희복(Choi Hee-Bok),김광희(Kim Gwang-Hee),김재엽(Kim Jae-Yup),서덕석(Seo Deok-Seok),강경인(Kang Kyung-In) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.3

Recently, Re-bar production method is being changed to method of tempcore re-bar that consist of two parts. a part, the core of tempcore re-bar, that has ferrite structure of excellent ductility and the other part, the surface of Tempcore re-bar, that has martensite structure of high relative stiffness. Therefore, the purpose of this research is to develop a re-bar mechanical connection that minimizes the decrease in relative stiffness of re-bar surface and to compensate flaw of previous screw type re-bar mechanical connection by performing screw processing only on the rib and node of re-bar This research was performed static tensile test for HD25, HD29 and HD32 re-bars and was also performed cyclic tensile test for D25, D29, HD25 and HD32 re-bars. And it was compared performance of maximum tensile strength and strain intensity to ACI Code ( maximum tensile strength shall be more than 125% of yield strength, strain intensity(δs)≤0.3) and then reviewed the future possibility for application. The results of this research are as follows; 1) static tensile test is revealed to be more than 140% of yield strength 2) and maximum cyclic tensile test is revealed to be more than 160% of yield strength. 3) displacement is apposite to limitation of allowable displacement(δs≤0.3). The results of tests of all specimens are complying with ACI Code of re-bar mechanical connection.