Synthesis and Charactrization of Polycaprolactone Nanocomposites Reinforced with Montmorillonite

조성준 한국세라믹학회 2004 한국세라믹학회지 Vol.41 No.6

[DEACOOH]-Montmorillonite intercalations complex obtained from Na-Montmorillonite and 10-Carboxy-n-decyldimethylethylammonium bromide(organic cation) was reacted with the monomer(ε-caprolactone) to achieve the [DEACOOH]-ε-caprolactone-Montmorillonite intercalations complex. From this intercalations complex Montmorillonite/Polycaprolactone Nanocomposites in which montmorillonite(inorganic polymer) is chemically linked with the polycaprolactone(organic polymer) were formed at 240oC by three different methods such as in stoichiometric amounts between monomer and organic cation, in excess of only the monomer and in excess of both organic cation and monomer. The products obtained after polymerization were analyzed with X-ray diffractometer and TEM.

지식공유 의도의 영향요인에 대한 실증적 분석: 조직 내 관계강도, 조직학습문화, 육성적 피드백, 조직몰입, 이직의도

조성준 한국농·산업교육학회 2015 농업교육과 인적자원개발 Vol.47 No.4

This study explores the factors that affect Korean workers' intention to share knowledge. While there is a variety of factors affecting intention to share knowledge, this study focuses on the effects of relational, environmental, and attitudinal aspects of individuals. Effects of relationship strengths with colleagues, supportive learning culture, developmental feedback, organizational commitment, turnover intention on knowledge sharing intention were examined. Data for analysis were collected from 452 employees in 31 companies in Korea. Results of a hierarchical multiple regression analysis present the following conclusions. First, environmental factors represented by perception of organizational learning culture and developmental feedback significantly affect knowledge sharing intention. Second, the attitudinal dimension toward the organization represented by organizational commitment and turnover intention also produce significant effect on knowledge sharing intention. Third, the hypothesis that predicts a positive relationship between strong connection with colleagues and knowledge sharing intention is not supported by the analysis. In addition, the lack of significant effect of age or tenure in an organization on knowledge sharing intention denies a common belief that the longer an employee stay in an organization the more willing to share his or her knowledge with juniors in the organization. 본 연구는 국내 기업체의 종업원들이 자신의 동료들과 지식을 공유하고자 하는 의도를 갖는데 영향을 주는 요인들을 탐구하였다. 지식공유에 영향을 미치는 변수들은 다양하게 존재하지만, 본 연구에서는 다른 조직 구성원들과의 관계적 요인(관계강도), 조직 환경적 요인(조직학습문화와 육성적 피드백), 조직에 대한 태도적 요인(조직몰입과 이직의도)이 지식공유의도에 미치는 영향을 중심으로 연구하였다. 이를 위해 국내 31개 기업, 452명의 근로자들로부터 얻은 표본데이터로 위계적 다중회귀분석을 실시하였고, 그 분석 결과를 바탕으로 다음과 같은 결론을 얻을 수 있었다. 첫째, 조직문화 및 상사로 부터의 피드백에 대한 인식 (즉, 조직 환경적인 요인)이 지식공유 의도에 유의한 영향을 미친다는 점을 확인하였다. 둘째, 조직에 대한 태도적 요인, 즉 조직몰입이나 이직의도와 같은 변수들 역시 지식공유의도에 영향을 미치는 것으로 나타났다. 셋째, 관계적 차원의 변수, 즉 같은 조직 구성원들과의 강한 관계가 지식공유에 영향을 준다는 가설은 지지되지 못했다. 덧붙여 조직근속연수나 연령 등이 지식공유의도와 유의한 관계를 보이지 않은 결과는 조직에 오래 있었다고 해서 반드시 후배들에게 자신의 지식을 공유하고자 하는 의도나 행동이 저절로 생겨나는 것은 아니라는 점을 말해준다.

태안지역 원유유출 사고에 대한 반성과 노력

조성준 대한산업의학회 2008 대한직업환경의학회 학술대회 논문집 Vol.40 No.-

宇宙通信開發에 따른 公共性의 法的 考察 : INTELSAT 恒久性 協定을 中心으로

趙成俊 한국항공대학교 1975 論文集 Vol.8 No.1

1964년에 世界 11個國이 參加한 가운데 暫定協定下의 國濟商業衛星機構(INTELSAT)가 發足했지만 이것은 어디까지나 組織的으로나 技術的인 試圖에 不過했다. 즉, 서로다른 發展段階에 있는 多數의 國家가 國濟通信이라는 共通의 利益을 爲해 國濟的인 組織을 만들어 새로운 宇宙技術을 實用해 나가자는데 있었고 이러한 試圖는 크게 成功하여 創立時의 期待以上의 成果를 얻을 수 있었다. 1973年 2月 에는 INTELSAT 恒久化 協定이 發效되었고 현재 約 80여개국이 이에 加盟하여 INTELSAT衛星을 通해 國濟間에 通信을 行하고 있다. 이外에 쏘련을 爲?한 東歐圈에서는 INTERSPUTNIK 衛星系가 組織되어 利用되고 있다. 이와같이 宇宙通信系의 設立과 運用에 마추어 參加國間의 主權平等을 保障하기 爲한 政治的 主張이 東西내지 南北間의 問題로 對立되어 오늘날 國際社회의 實情을 背景으로 폭넓게 번져가고있다. In 1964, INTELSAT was established under the Interim Arrangement for a Global Commercial Communications Satellites System with participant 11 countries of the world, but it was only in it's infant. The purpose of the organization was originally to use the new space techonlogy and to meet amply the requirements of common benefits, the Global Communications, via satellites. Such attempts were succeeded and made good achievements than those we had expected. In Feburary 1973, Definite Arrangement for INTELSAT was in effect and Global Communications have been carring on among 80 countries on the whole. But in USSR and in some other communist countries in East Europe, INTERSPUTNIK Agreement for Space Tele-communications was orgainzed and have being in use. With the establishment and operation of an international system and organization for like this, political issues for ensuring equality of sovereignty among signatory countries have become West-East problems or South-North problems. And these problems spread widely as the international political status issues.

An Integrated Framework of Knowledge Transactions in Firms: Resource-based, Transactional and Social Exchange Approaches

조성준,전정호 한국농·산업교육학회 2010 농업교육과 인적자원개발 Vol.42 No.1

The purpose of this paper is to propose an integrative framework to explore the nature of knowledge transactions in firms. We adopt a resource-based perspective of firms and a transactional perspective assuming that firms have incentives for knowledge sharing so they can be competitive, and assuming that firm members are economic players who seek utility maximization. Through a review of the literature, the theoretical nature of firms that hold advantages over the market are explored. To fill the gap of the economics model in explaining the motivation of knowledge sharing, we examine the social exchange theory and find that social rewards as well as financial rewards facilitate knowledge transactions. The model also reveals that the pattern of knowledge transactions varies depending on the nature of the knowledge traded. In case of general knowledge, conceptual knowledge requires formal and structured training,while tacit knowledge requires competitive financial compensation. In case of firm-specific knowledge, the strategy for tacit knowledge should be based on social captal development, while conceptual knowledge should be dealt with compensation for performance and internal recognition. Based on a classification of knowledge, the best strategies for managing a transaction of each type of knowledge are discussed and suggested.

메탄 연소 반응 특성에 대한 팔라듐 촉매의 금속 산화물 첨가와 이원금속촉매 형성효과

조성준,윤형기,강성규 全南大學校 觸媒硏究所 2003 觸媒硏究 論文集 Vol.24 No.-

Effect of metal oxide coating and bimetallization of the palladium metal catalyst on the reversible transformation during thermal cycling in the combution was investigated with extended X-ray absorption fine structure and X-ray absorption near edge structure (EXAFS/XANES). The transformation of PdO to Pd was altered to increase its temperature by ca. 100 K with the titania and zirconia metal oxide coating, suggesting the increase of the thermal stability. The different catalytic activities of the palladium catalyst in methane combution at increased and decreased temperatures were ascribed to the different structures of the active sites, PdO and Pd. The bimetallization of the palladium catalyst with platinum removed the difference in the catalytic activities when increasing and decreasing the tmeperature. The results of the data analysis of the EXAFS indicated the formation of the bimetallic nanoparticles in which the palladium core was covered with the secondly loaded platinum.

日本의 發射豫定인 放送衛星이 우리나라에 끼칠 수 있는 影響에 對한 考察 : 放送衛星에 依한 宇宙通信의 國際法的 側面을 中心으로 According to the International Law of Space Telecommunications by a Broadcasting Satellite

趙成俊 한국항공대학교 1976 論文集 Vol.10 No.-

通信衛星의 送信電力이 數W내지 10w정도인데 반해 放送衛星은 數10w내지 數100w로 대단히 커서 自國의 特定地域外에 누설되는 電波는 地國의 無線通信에 障害를 주게 된다. 따라서 放送衛星의 送信안테나의 指向性 여하가 技術的 問題外에도 法律的, 政治的 또는 社會的 問題로서 國際間의 紛爭의 한 原因이 되고 있다. WARC-ST에서도 이를 爲해 相對國間 또는 多數國間의 條約締結에 依한 [明示된 事前同意]의 必要性을 決議했다. 日本이 發射 豫定하고 있는 實驗用 放送衛星도 경우에 따라 그의 Coverage속에 우리나라의 一部가 포함될수 있다. 따라서 우리나라는 宇宙通信의 國際法的인 側面에서 이에 對한 對??을 硏究할 必要가 있음을 지적하고자 한다. The output of the broadcasting satellite, 10 watts or 100watts, is much larger than that of the communication satellite, a few watts or 10 watts. Therefore, the leakage waves from the broadcasting satellite except its own broadcasting region are affected on the tele-communications of the other radio stations. The debates on the directional range of its broadcasting antenna, not only a technical but also a judical and a social problem, are introduced to the issues between the nations. Recently WARC-ST determined the need of "A clear Agreement in advance"by their contract between the other nation for the above problems. A Japan's broadcasting satellite to be launched will may be included the sourthern parts of the Korean penisular in its coverage. Therefore, the authorities of Korea must have the counter-measures which the International Law of Tele-communications can be taken advantage of.

디지틀 QAM시스템과 아날로그 FM시스템간의 干涉影響

고봉진,강영흥,조성준 한국항공대학교 1989 論文集 Vol.27 No.-

본 논문에서는 DIV시스템에서의 디지틀 QAM 시스템과 아날로그 FM시스템 상호간의 간섭 영향에 대해 고찰하였다. 먼저 아날로그 FM 시스템과 디지틀 QAM시스템 상호간의 간섭환경하에서 디지틀 QAM신호의 오율식과 아날로그 FM신호의 기저대역에서의 신호대 간섭잡음 전력비(SNR)에 대한 일반식을 유도하여 그의 계산결과를 반송파 대 잡음 전력비(CNR), 반송파 대 간섭파 전력비(CIR), 정규화 반송파 주파수차(X)를 함수로 하여 그래프에 나타내었다. 같은 무선주파수 대역내에서 디지틀 QAM시스템과 아날로그 FM 시스템이 공존하기 위한 각 함수의 수치값을 그래프로부터 구할 수 있었다. The mutual interference effects between analog FM system and digital QAM system have been analyzed and discussed under DIV system. At first, the error rate equation of digital QAM signal and the baseband signal to interference noise ratio(SNR) equation for analog FM signal have been derived in environment of noise and mutual interference. And the numerically calculated results are shown in graphs as functions of carrier to interference ratio(CIR), carrier to noise ratio(CNR), normalized carrier frequency separation(X). From the graphs, numerical value of each function can be obtained for the coexistance of analog FM system and digital QAM system in a same radio frequency band.

남성노년기의 건강과 향기치료

조성준 메디메디아코리아(주) 2002 유로트렌드 Vol.7 No.1

대기부유분진중 nitroarenes 오염도와 그 돌연변이원성에 관한 조사연구 : 서울시 일부지역을 중심으로

조성준,최용욱,임영욱,신동천,정용 한국환경독성학회 1990 환경독성보건학회지 Vol.5 No.2

Nitroarenes are ubiquitous environmental pollutants displaying potent mutagenicity in bacteria and carcinogenicity in mammal. In this study, the concentration of nitroarenes in coarse and fine particles and mutagenicity of POC_(N) fraction was investigated in suspended particulates at the Shinchon and Bulkwang area of Seoul. The suspended particulates were collected bimonthly by a high volume cascade impactor air sampler from July 1987 to May 1988. Extractable organic matter was obtained by ultrasonic extraction on diethly ether/cyclohexane (8/2, v/v). Neutral fraction was obtained by liquid-liquid extraction. Polar neutral organic compounds (POC_(N)) was fractionated by thin-layer chromatography. Finally, the concentrations of nitroarenes in POC_(N) fraction were measured and determined by capillary gas chromatography. Direct and indirect mutagenicity of POC_(N) fraction were measured using Salmonella typhimurium TA 98. The result were as follows: 1) Major nitroarenes at the Shinchon area was 1-nitropyrene and at the Bulkwang area it was 2,7-dinitro-9-fluorenone during the year. 2) Average concentration of total nitroarenes measured was 67.26 ng/m³ in fine particles which was 1,3 folds higher that in coarse particle (52.30 ng/m³). 3) Annual pattern of nitroarenes concentrations revealed that concentration during heating season (Feb., Jan., Mar.) was 2.2 folds higher than that in non heating season (May, Jul., Sep.). Concentration of each season has 157.68ng/m³ and 80.39 ng/m³. 4) The mutagenic activity of POC_(N) fraction from fine particles was higher compared to that of coarse particles and was increased when metabolically activated, with S9 mixture. Mutagenicities, Metabolically activated, were significantly different between Shinchon and Bulkwang area, 322.8 rev/250㎍/plate and 286.8rev/250㎍/plate, respectively. 5) Annual pattern of mutagenicity of POC_(N) fraction revealed that mutagenicity during the heating season was 1.7 folds higher at Shinchon area and 1.2 folds higher at Bulkwang than during the non heating season. The variable contents and levels of nitroarenes in suspended particulates may affect human health significantly. Further studies such as risk assessment should be conducted on the basis of these kind of studies.