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조성룡(Sung-Ryong Cho),한환수(Hwansoo Han),이상원(Sang-Won Lee) 한국정보과학회 2010 정보과학회 컴퓨팅의 실제 논문지 Vol.16 No.6
대량의 데이터 처리 영역에 대한 중요성이 증가하는 가운데 다차원의 속성을 갖는 레코드에 대한 스캔을 필요로 하는 질의처리에 있어 SIMD 명령어 셋을 이용하여 보다 효율적인 스캔성능을 얻을 수 있다. 이러한 배경하에서 이 논문에서 제시하는 기법인 ‘SIMD 레코드 스캔’은 행-기반의 스캔으로 열-기반의 저장구조를 갖는 기존의 메모리 기반 데이터베이스 시스템에서 조건식 처리나 집계연산등에서의 연산성능을 높이기 위해 열에 종속적으로 SIMD 명령어를 이용하던 것과는 달리 다차원 속성들의 비교가 요구되는 레코드 스캔에서의 효율을 높일 수 있다. 이는 레지스터 및 시스템 메모리의 크기가 증가함에 따라 더 큰 성능향상을 가져올 수 있으며, 멀티코어 기반의 병렬화 기법과 독립적이므로 SIMD를 지원하는 단일 프로세서뿐 아니라 이들로 구성된 멀티코어 프로세서에도 기존 시스템이나 아키텍처를 변경하지 않고도 적용이 가능하다. Processing a large amount of data becomes more important than ever. Particularly, the information queries which require multi-dimensional record scan can be efficiently implemented with SIMD instruction sets. In this article, we present a SIMD record scan technique which employs row-based scanning. Our technique is different from existing SIMD techniques for predicate processes and aggregate operations. Those techniques apply SIMD instructions to the attributes in the same column of the database, exploiting the column-based record organization of the in-memory database systems. Whereas, our SIMD technique is useful for multi-dimensional record scanning. As the sizes of registers and the memory become larger, our row-based SIMD scan can have bigger impact on the performance. Moreover, since our technique is orthogonal to the parallelization techniques for multi-core processors, it can be applied to both uni-processors and multi-core processors without too many changes in the software architectures.
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이종원,이상욱,조성룡,김선태,박인용,Lee, Jong-Won,Lee, Sang-Uk,Jo, Seong-Ryong,Kim, Seon-Tae,Park, In-Yong 한국재료학회 2002 한국재료학회지 Vol.12 No.1
In this study, the nanosized ZnS thin films that can be used for fabrication of blue light-emitting diodes, electro-optic modulators, and n-window layers of solar cells were grown by the solution growth technique (SGT), and their surface morphology and film thickness and grain size dependence on the growth conditions were examined. Based on these results, the quantum size effects of ZnS were systematically investigated. Governing factors related to the growth condition were the concentration of precursor solution, growth temperature, concentration of aq. ammonia, and growth duration. X-ray diffraction patterns showed that the ZnS thin film obtained in this study had the cubic structure ($\beta$-ZnS). With decreasing growth temperature and decreasing concentration of precursor solution, the surface morphology of film was found to be improved. Also, the film thickness depends largely on the ammonia concentration. In particular, this is the first time that the surface morphology dependence of ZnS film grown by SGT on the ammonia concentration is reported. The energy band gaps of samples were determined from the optical transmittance values, and were shown to vary from 3.69 eV to 3.91 eV. These values were substantially higher than 3.65 eV of bulk ZnS. It was also shown that the quantum size effect of SGT grown ZnS is larger than that of the ZnS films grown by most other growth techniques.
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1945년 이후 음열 기법을 이용한 작곡가들에 관한 연구
조성룡,김경애 安東大學 1998 安東大學 論文集 Vol.20 No.1
20세기의 음악은 2차대전을 전후로 급변하는 세계 정세, 사회 질서의 혼미와 더불어 여러 실험 과정을 보여왔다. 작곡가들은 새로운 음악을 찾기 위하여 악기를 개발하고 기법을 다양화 하였다. 그것은 무조 음악, 12음 음계의 합성, 유연성 음악, 전자 음악 등 여러 음악 형태로 나타나게 된다. 1945년을 이후로 하여 Pierre Boulez, 윤이상, 달라피콜라, 죠지펄, 밀튼 배빗 등에 의해 시작되는 음악에서의 우연의 요소는 그 이전의 전음렬주의나 진위 음악파 등의 작품경향을 20세기 후반을 향한 새로운 기법으로 바꿔주고 있다. 본 논문에서는 1945년 이후 음렬 기법을 사용한 주요 작곡가의 간략한 생애와 주요 작품을 분석해 보았다. Boulez는 Weberu풍의 점묘주의적 음렬 기법을 추구하면서 이것이 더욱 진보되어 음고, 리듬, 표현 기법 등의 모든 요소를 set화시켜 잘 통제되고 제한된 한계 내에서 자유로운 선택이라는 의미를 부여하고 있다. Milton Babbitt는 12음 기법에 있어서 잠재적인 가능성을 더욱 활용하는 새롭고 독창적인 방법을 발전시켜 기본 음렬에서 첫 번째 hexachord에 유용한 4개의 trichord를 사용하는 4개 trichord로 파생되는 음질을 만들어낸다. Dallapiccola는 비엔나의 12음 아파들과 다양한 특질들을 공유한다. 그러나 중음정, 7도, 9도와 더 넓은 음정들에 있어서 그의 선율은 훨씬 더 전통적인 음정을 사용함으로써 독자성을 뛴다. 더욱이 달라피콜라는 반음계를 순수한 전타음과 더불어 통합하는 결과를 거둔다. 한국이 낳은 세계적인 작곡가 윤이상은 동아시아적 음향관과 미학을 유럽의 Avant garde적 음악 언어로 표현하여 "서구 음악의 수단을 통한 한국적 음악의 표현", "한국 음악의 연주 기법과 서양 악기의 결함", "서양 현대 음악 기법을 통한 동아시아적 이미지의 표현"등으로 나타냈다. "윤이상의 선율"은 긴 음가를 나타내는 지속음들로 작품의 뼈대를 구성하는 진정한 의미의 음인 바로 "중심음"을 만들어 낸 것이다. In 20C's music, there have been varions experimental attempts since around World War II. Composers have developed instruments and diversified techniques to create new music. They emerged in the form of atonal music, synthesis of 12-tone scale, random composition music, electronic music etc. Factor of accident in music has changed work trend of Integral Serialism or Avant-garde music to new ways toward the close of 20th century, which was developed by Pierre Boulez, Yoon Yi-Sang, Dallapiccola, George Perle, Milton Babbitt etc. Important composers' life were mentioned briefly, who have used serialism technique sine 1945, and their chief works were analyzed in this thesis. Boulez pursued serialism technique of Webern-style pointillism, and by improving it much more, made sets of all the elements such as pitch, rhythm, and expression technique. Thus he created the meaning of "choosing freely within the limits well controlled and restricted". Milton Babbitt improved the new and unique technique in which potentiality was used still more. Dallapiccola shared many features with Viennese. However, in augmented, 7th, 9th and broader intervals, his melody is unique by using much more traditional interval. Yoon Yi-Sang, the World-wide Korean composer, expressed his East-Asian view of sound and esthetics with European avant-garde musical language: "expression of Korean music by neans of western music", "combination of Korean music performing technique with western instruments", "expression of East-Asian image through modern Western music technique". Yoon Yi-Sang's melody created the true sound "hauptton"(meaning "head tone" in Germany', which organized frame of work with the pedal point of long phonetic value.
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신라향가의 음악적 연구 : 고려가요 및 일본의 시라기가와의 관계를 중심으로
조성룡 한국음악학회 2000 한국음악학회논문집 음악연구 Vol.22 No.1
Koreans have a lot of treasures they have enjoyed singing and dancing from long time ago at present, and they sometimes enjoy them now. These singing-custome, involvng dancing, have been well kept from the ancient contries such as the period of three States, Kolye, and Chosun. Therefore, we happily have a lot of songs or words written by our ancesters. But we need to focus about Hyanga made by Shills period about 1200 or over years ago. But unhappily, the study of music about it are very weak as well as approaching to. Why? It's very sorry that the materials about Hyanga have not been left in the melodies of it. We don't know why we can't find them, and misting or burnt? Even we have few records, we can find some ways to study the meloddy of it. We can imagine that the people of Shilla had sung the Hyanga to place various words on the same melody rather than singing with no rules. We understand the musical instruments such as Gayago, Bipa, Geumungo and so on, were popular by them. So we can guess the melody were deep interested in the scales of them. Besides, we can find the vestages of the Hyanga in the songs of Kolye period even missing the melody of it. For example, "Samogok", one of the songs of Kolye period, is well known "Mokjuga", one of Hyan-gas of Shilla period. And Jungsuh's "Jeunggwajung", when king. Uijong of Kolye dynasty, composes of 10 phrases the same as "Changgipalanga" of that of Shilla. Futhermore, "Silagiga" of that of Japan influenced by that of Shilla provides us good materials. Therefore we have possibility to revive it by such indirect ways or means.
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신태용,염정열,김원,김현미,박해정,장진이,조성룡,채병숙 우석대학교 생명과학연구소 1998 생명과학연구소 논문집 Vol.2 No.-
We investigated the effect of aqueous extract of Ammomum xanthioides(AXAE) on immediate hypersensitivity. AXAE inhibited systemic anaphylaxis induced by compound 48/80 in mice. AXAE inhibited serum histamine levels induced by compound 48/80 in mice. Moreover, AXAE dose-dependently inhibited histamine release in peritoneal mast cells activated by compound 48/80. These results indicate that the AXAE may be benificial in the regulation of immediate type allergic reaction.
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Study about Alexander Scriabin's Compositional Style and Mystic Chord
Cho, Sung ryong 安東大學 1990 安東大學 論文集 Vol.12 No.1
Alexander Scriabin, Russian composer and pianist of the post Romantic, composed nocturnes, preludes, etudes and Mazurkas in the style of Chopin. And he was influenced by the chromaticism of Liszt and Wagner. Gradually he used complex harmonies made by him. In late his works, he made what-so called <Mystic Chord>.
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