Carboxylic acid가 CuInS₂/ZnS 반도체 나노입자의 광학적 특성에 미치는 영향

안시현,최규채,백연경,김영국,김양도,Ahn, Si-Hyun,Choi, Gyu-Che,Beak, Yeun-Kyung,Kim, Young-Kuk,Kim, Yang-Do 한국분말야금학회 2012 한국분말재료학회지 (KPMI) Vol.19 No.5

We report the effect of the chain length of carboxylic acid on the photoluminescence(PL) of $CuInS_2$/ZnS nanocrystals. $CuInS_2$/ZnS nanocrystals with emission wavelength ranging from 566 nm through 583 nm were synthesized with zinc acetate and carboxylic acids with various chain length. In this study, $CuInS_2$/ZnS nanocrystals prepared using long chain carboxylic acid showed more improved PL intensity. The origin of strong photoluminescence of the nanocrystals prepared with zinc acetate and long chain carboxylic acid was ascribed to improved size distribution due to strong reactivity between long chain carboxylic acid and zinc acetate.

Ladysmith Black Mambazo 음악의 특징: 'Black is Beautiful', 'Homeless'를 중심으로

안시현,Ahn, Sihyeon 국제문화기술진흥원 2021 문화기술의 융합 Vol.7 No.3

Ladysmith Black Mambazo is a group of men influenced by South African traditional Zulu a cappella and American black music. The Jubilee Choir of the United States came to South Africa in the 1870s and influenced South African music while performing. Ladysmith Black Mambazo's music can be the result of the combination of the indigenous Zulu a cappella and the American Jubilee music style. This group participated in Paul Simon's album "Graceland" and became world famous. The album won a Grammy Award for sales of millions of copies. After that, they released their own albums and won 5 times Grammy Awards (nominated 15 times) They inherited and developed Zulu music under the philosophy of "preserving musical heritage". As a samely non-Western country, with hope their spirit, inheriting old one and innovating new one, gives positive inspiration for Korean music, I investigated how their music, 'Black Is Beautiful', 'Homeless' are influenced by the western music and inherited their own traditional music in it.

Ormocer-Based-Resin의 상아질에 대한 전단결합강도 및 파절 양상에 대한 연구

안시현,조인호,임주환,임헌송,Ahn, Shi-Hyun,Cho, In-Ho,Lim, Ju-Hwan,Lim, Heon-Song 대한턱관절교합학회 2002 구강회복응용과학지 Vol.16 No.3

The bond strength is one of the most important factor in establishing long-term success of esthetic restorative dentistry. So, various restorative materials have been introduced to improve the esthetic and physical properties. Ormocer (organically modified ceramic) was developed as a result of such efforts. This study was performed to compare the shear bond strength of ormocer based adhesive with that of existing dentin adhesive. In this study $Admira^{(R)}$ and $Admira^{(R)}$ bond of the ormocer system are grouped together for ADM, Single $Bond^{(R)}$ which is an one-bottle adhesive and Z-250TM which is hybrid composite resin of BIS-GMA system for SIN, and $Definite^{(R)}$ of ormocer and Etch & $Prime^{(R)}$ 3.0 which is a self etching priming/ bonding agent for ETC. The results of this study were as follows. : (1) In the comparison of shear bond strength according to different adhesive system, shear bond strength was increased in the order of ETC group, SIN group, ADM group. There was no significant difference between ADM group and SIN group. However, there was a significant level of difference between ADM and ETC groups as well as SIN and ETC groups( p<0.05). (2) Examination by a scanning electron microscope showed a well established hybrid layer and resin tag in both ADM group and SIN group, while ETC group showed a minimal formation of the hybrid layer when compared with ADM and SIN groups. From the above results, it may be reasonable to start the clinical application of ormocer system, and it is recommended that ormocer system should be used along with an ormocer based adhesive because ormocer system showed the lower shear bond strength when it used with other existing self etching priming/bonding agent. The self etching priming/bonding agent showed relatively low shear bond strength, and it is considered that the further study should be needed.

비선형 제어기 암호화를 위한 다항식 제어기의 양자화 오차 분석

안시현(Si Hyun Ahn) 대한전기학회 2023 정보 및 제어 심포지엄 논문집 Vol.2023 No.10

월드뮤직 장르 ‘I sicathamiya’ 의 민족전통전개

안시현 ( Si Hyeon Ahn ) 세계음악학회 2016 음악과 문화 Vol.35 No.-

This is a thesis on studies of the historical change of Isicathmiya. Isicathamiya is what the folk music factors which Zulu, one of South Africa tribes, has are reflected on the western a cappella. Although Isicathamiya originated with introduction of American Black gospel, I studied only the music not with evidence spread from mouth to mouth but with the accurate audio materials and recoding in this paper. First I had argued about the history. This is because the music is formed with social and cultural background. I ascertained that politics, economy, social, and culture etc. of South Africa have something to do with Isicathamiya as I examined the origin and the historical process of Isicathamiya. The periodical music history was divided into 4 stages such as a formative period, a transition and development period, and the present period from a newspaper record published in Durban in 1891 to the present time. And I examined the periodical features of Isicathamiya based on the important points among features revealed by a representative musician’ s works in each period. Although Isicathmiya, South Africa``s music genre, was developed under the influence of black gospel, it was developed in its own unique music genres beyond the mere imitation and it is causing a great reverberation in the world music market. This thesis has a significant meaning because it studies Isicathamiya``s characteristics by reviewing its historical transition. In 21st century considering diversity and creativity as important things, the trend to lose the identity of the domestic music owing to accepting western music unconditionally must move toward the succession and development of the domestic traditional music. I studied this thesis, hoping that Korean music will try to create a new style like that of South Africa. I hope that such a research as this will continue.

실용음악학의 연구현황에 대한 고찰 -국내 박사학위 논문을 중심으로-

안시현(Si-hyeon Ahn) 한국인간과자연학회 2024 인간과자연 Vol.5 No.1

본고는 한국에서 연구된 실용음악에 관한 연구논문을 중심으로 실용음악학사의 토대자료를 구축하는데 연구의 목표가 있다. 이를 위해 실용음악에 관한 박사학위 논문 현황을 실용음악과 대중음악으로 분류하여 검토하였다. 한국의 대학 실용음악학과는 1988년 개설하였고, 2003년에는 대학원 박사과정이 개설되었으나 실용음악학에 관한 연구논문이 이루어지지 않았다. 실용음악학에 관한 석·박사 학위논문이 국회도서관에 1,500여건 소장되어 있고, 각 학회지에 소논문이 발표되고 있으나 이를 종합하기는 한계가 있어 박사학위 논문을 중심으로 실용음악학 연구현황을 파악하여 실용음악학사의 기초자료를 마련하는 데 의의를 둔다. 실용음악의 개념은 대학의 교육목표에서 정의하면 대중음악, Jazz, 동양 전통음악, 서양 고전음악 등과 이들을 결합하여 ‘21세기 신음악’을 창조한 음악 등 다양한 음악문화 전반을 포괄하고 있다. 범주 또한 국내 대학 교과목을 중심으로 파악한 결과 100여 과목으로 분류된다. 실용음악학에 관한 박사학위 논문 현황은 실용음악과 대중음악으로 분류하여 검토한 결과 실용음악에 관한 논문은 94편(1992~2024년)이고, 23개의 학교에서 연구되었다. 이 중 경희대학교와 상명대학교의 논문이 가장 많다. 대중음악에 관한 논문은 65편(1994~2023)이고, 33개의 학교에서 연구되었는데 경희대학교가 가장 많고, 상명대학교, 세종대학교에서 다수 연구되었다. 논문의 내용을 역사, 유형, 효과, 활용으로 분류하여 분석한 결과 역사에 관한 논문이 35건, 유형별 논문이 64건, 효과에 관한 논문이 41건, 활용에 관한 논문이 19건으로 총 159건이다. 논문의 성향은 대중음악 전반의 역사와 프로그램 개발을 통한 기대효과, 대중음악을 활용한 정서, 치료 등이 있으며, 인문학적 철학, 미학 등의 논문이 있으나 미학, 예술학에 관한 논문이 저조한 편이다. This thesis aims to establish foundational data for the field of applied musicology, with a focus on research conducted on practical music in Korea. To accomplish this, an analysis was conducted on the current status of doctoral dissertations related to practical music, categorizing them into practical and popular music. The Department of Applied Music in Korean universities was established in 1988. Although a doctoral program was introduced in 2003, research papers on applied music were not prevalent. There are over 1,500 theses and dissertations related to applied music stored in the National Assembly Library, and individual papers are published in various academic journals. However, due to the difficulty in synthesizing these sources comprehensively, the significance lies in examining the current state of research on applied music, focusing on doctoral dissertations, to establish foundational data for the field of applied musicology. The concept of applied music encompasses a wide range of musical cultures, including popular music, jazz, Eastern traditional music, Western classical music, and others, as defined by the educational objectives of universities. It aims to create “music of the 21st century” by integrating various musical genres. In terms of categorization, an examination of university curricula in South Korea reveals over 100 courses classified under this category. The current status of doctoral dissertations on applied music and popular music reveals that there have been 94 papers (from 1992 to 2024) on applied music, conducted at 23 different institutions. Notably, Kyung Hee University and Sangmyung University have produced the highest number of dissertations in this field. As for popular music, there have been 65 papers (from 1994 to 2023), researched at 33 institutions. Kyung Hee University leads in the number of dissertations, followed by Sangmyung University and Sejong University. These papers were categorized and analyzed based on their content, with 35 focusing on historical aspects, 64 on typology, 41 on effects, and 19 on applications, totaling 159 papers. The nature of these papers covers various topics such as the overall history of popular music, expected outcomes through program development, emotional and therapeutic uses of popular music, as well as papers exploring humanities-related subjects like philosophy and aesthetics. However, there is a scarcity of papers specifically focused on aesthetics and art studies.

Ormocer-Based-Resin의 상아질에 대한 전단결합강도 및 파절 양상에 대한 연구

안시현(Shi-Hyun Ahn),조인호(In-Ho Cho),임주환(Ju-Hwan Lim),임헌송(Heon-Song Lim) 대한턱관절교합학회 2002 구강회복응용과학지 Vol.18 No.4

APS신호를 적용한 전기이륜차용 CAN통신모듈 개발

안시현(ShiHyun Ahn),안정훈(JeongHun Ahn) 한국자동차공학회 2012 한국자동차공학회 지부 학술대회 논문집 Vol.2012 No.4

Most of countries are awaking to the need for cutting fuel consumption and greenhouse gases since 2000. There is a growing need to introduce new safe vehicles for the aged and a physically challenged person. A electric scooter and wheelchair is eco-friendly vehicle making electric battery a alternative to oil and has good features as a mobility assisting vehicle. This paper presents a new method to control Motor Speed with APS and CAN signals a electric scooter and wheelchair. A Motor Speed Control Module designed for new method is composed of MCU(dspic30f6015) and APS signal interface and CAN Transceiver and LCD Controller and switch. These are performed signal conversion from APS signal to CAN signal and motor speed control test with Accelerator Pedal Module and CANoe and MCLV Board.

인공지능 기반 실시간 감지가 가능한 산불 경보시스템

안시현(Shi-Hyun Ahn),박윤하(Yun Ha Park),문병인(Byungin Moon) 한국정보기술학회 2023 한국정보기술학회논문지 Vol.21 No.3

Recent wildfires are direct results of global warming. Most of the existing wildfire prevention has mostly focused on flame detection. However, it does not provide rapid response. In this paper, we develop deep learning-based “smoke” detection on CCTV for quick reaction. we also analyze real-time multi-channel images to monitor a wide area. The system has an accuracy of smoke recognition over 93% for mAP and can analyze 50-channel images simultaneously. A dashboard S/W and emergency alarm system(SMS) was developed for managers to monitor forest fire smoke in real time. Providing real-time information can reduce the loss of life and property from wildfires and enhance protection of critical facilities. we plan to develop a emergency alarm system(mobile app) in the future. As a result, it is expected that forest fire damage will be minimized by checking the forest fire situation in real time.

Examination on Characteristics of Cho Dong-Ik’s Music

Si Hyeon Ahn(안시현),Jung Min Byun(변정민) 인문사회예술융합학회 2017 문화와 융합 Vol.39 No.4