In this study, it was performed using submerged nonwoven bioreactor(SNBR) for removal of organic matter, nitrogen and phosphate under different aeration intervals(intermittent aeration). We applied the SNBR at the cheap nonwoven fiber module instead of the expensive membrane. The SNBR was mainly made up of an activated sludge reactor and a transverse flow nonwoven module, with an innovative configuration being in application between them. In case of sewage, the aeration conditions experimented consist of continuous aeration and 60min/60min, 120min/60min, 120min/120min of aeration/nonaeration time intervals, respectively. In case of landfill leachate, the intermittent aeration condition was 120min/120min at aeration/nonaeration. Consequently, a high COD removal rate (about 94%) was achieved in sewage and leachate. Although nutrient removal rate was relatively high without any additional chemicals.

The purpose of this study was to develop the preliminary source fingerprints of volatile organic compounds (VOC). The source categories studied were vehicles, gasoline vapor, gasoline storage tank, coating, dry cleaning and road covering. The source samples were collected using 6L electro-polished stainless steel canisters for about 20 seconds. From this study, the main component emitted from VOC sources in Korea was toluene. The toluene proportion for road covering, vehicles, coating and gasoline vapor were 35, 18, 16 and 5%, respectively. The C2-C5 alkane and alkene compounds were mainly emitted from vehicles, gasoline vapor and gasoline storage tank. The main compounds of coating were m/p-xylene(34%), toluene(16%), 1,2,4-TMB(10%) and o-xylene(9%), which are aromatic hydrocarbons. In the case of dry cleaning, nonane(41%), 1,2,4-TMB (22%) and 1,3,5-TMB(13%) were mainly emitted.

연안 경비함정의 선상근무 환경은 육상근무 환경에 비하여 매우 열악하여 선상근무 기피와 성원고령화의 원인이 되고 있다. 특히 선박내 소음은 난청과 같은 직업병을 유발시키는 원인이 된다. 따라서 안락한 선상근무 환경 및 거주 환경의 확보를 통하여 선상근무 피로도를 경감시키는 것이 필요하다. 본 연구에서는 먼저 선박내 소음 및 진동의 실선 계측을 통하여 선상근무 환경을 체계적으로 평가한다. 그리고 선상근무 환경의 평가 결과에 기초하여 선상근무 피로도 경감대책을 제안한다

Since the 7th Curriculum allows students to freely select their second foreign languages, teachers who can teach some other languages as well as German are expected to be in increasing demand in Korea. For this change, the German language education curriculum introduces a new dual structure that includes both a teacher education program for German language and an interdisciplinary program. Due to the separate structure of disciplines, in which any situational connectivity is not considered, we fail to effectively deal with a new discipline areas. This is also the case in teacher education. Specifically, the Department of German Language Education should make more tangible interdisciplinary connections with other discipline areas such as Teaching Korean as a Foreign Language, instead of keeping the curriculum based on the humanistic point of view only.

This study provides a possibility of analysing rhythmic attributes of contemporary music through contour theory.The early idea of pitch contour occured as early as 1948 in the writing ofcomposers such as Toch and Schoenberg Over a decade later, the work of Charles Seeger, Charles Adams, and Micczyslaw Kollinski set forth the theories of contour analysis But, in the music theory, the concept was formalized by Robcrt Morris Michael Friedmann, and Larry Polansky, Elizabeth Marvin and Robert Morris, in particular, have signiflcantly developed the analytical methodology with which to apply the contour thory.contrast to the previous results of contour music analysis, which focused onpitch element, this analysis presumes that the rhytbms also show similar characterTo prove the hypothesis this thesis re-classified the Elizabeth Marvin and Noel Painenr's rhythmic analysis theories and adjusted the result into Stockhousen's In freundschaft. As a result the number of rtythmic characters that continuously appear in contemporary music were found Also, the possibility of defining similarities of ythmic element through various methods by adjusting the theories including inversion and retrograde, that are similar to set theory, was found.The contour theory will be a good example of analysing rhythms in contemporary music that were believed to be inconsistent in the past.