• Journal of Korean Society of Environmental Engineers
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• v.28 no.4
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• pp.389-396
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• 2006

A quantitative survey of the protozoa microfauna at two advanced wastewater treatment plants has been carried out on a weekly basis. The abundance of the protozoa were compared with operating parameters and effluent quality using statistical procedures. The protozoa distribution indicated it seemed the composition of the influent wastewater and operating conditions of plant influenced the structure of protozoa in the plant. In statistical analysis, the distribution of protozoa showed the present operating condition of plant and predicted near-future effluent qualify. Enough data concerning protozoa, operating parameters and effluent has been gathered, the operator has a valuable tool for predicting plant performance and near-future data of effluent based on microscopic examination. Perhaps more importantly it can be used to actually control the plant to adjust the operating conditions to obtain the protozoal populations that have been shown to provide the best effluent quality.

• Microbiology and Biotechnology Letters
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• v.32 no.2
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• pp.158-165
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• 2004

This study concerns the succession process of protozoa populations in two activated sludge pilot plants. Protozoa populations with similar structures developed and succeeded each other in two plants. It was observed that initial sludge inoculum did not influence the protozoan composition but shorten the period of the plant stabilization. It seemed the protozoan in aeration tank was come from the influent. The composition of the influent sewage influenced the structure of protozoa in the pilot plants. The flagellates was very abundant during the initial starting phase. These rapidly decreased after growth peak. Then sarcodina, ciliates were increased in succession. In ciliates, free-swimming forms appeared at first and crawling forms and stalked forms were followed. After 36 days from the start, the sludge stabilization phase was characterized by a populations of ciliates dominated by stalked and crawling type and low value of effluent BOD was achieved.

• Microbiology and Biotechnology Letters
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• v.33 no.1
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• pp.56-64
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• 2005

The occurrence and abundance of protozoa at advanced wastewater treatment plant were compared with operating parameters and effluent quality using statistical procedures. It seemed that plant operating conditions influenced the distribution of protozoa in the mixed liquor. In statistical analysis, the distribution of protozoa showed the operating condition of plant and predicted effluent quality. Once enough data concerning protozoa, operating parameters and effluent has been gathered, the operator has a valuable tool for predicting plant performance and near-future effluent quality based on microscopic examination. Plant operator manipulates operating conditions if he knows near-future effluent quality is deteriorating. Perhaps more importantly it can be used to actually control the plant to adjust the operating conditions to obtain the protozoal populations that have been shown to provide the best effluent quality.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.185-189
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• 2016

최근 청년 실업 문제가 사회적 이슈로 대두되면서 취업의 대안으로 창업에 대한 관심이 고조되고 있다. 본 논문에서는 연구자의 대학 전공 분야이면서도 상대적으로 제도적 지원의 협소로 인해 창업에 대한 관심도가 저조한 예술 분야 전공 대학생 및 대학원생들의 창업의지에 대한 생각을 살펴보고자 하며, 또한 그들의 창업의지를 보다 고취시키기 위해 필요한 방안들을 도출해보고자 한다. 연구방법으로는 서울, 경기도, 경상도, 강원도 등 4개 지역 예술 관련 전공 대학생 및 대학원생들을 대상으로 설문조사를 실시하고자 하며, SPSS 22.0을 이용한 빈도분석, 요인분석, 신뢰도분석, 상관관계분석, 다중회귀분석을 통해 밝히고자 한다. 이 같은 방법을 통해 창업의지에 영향을 미치는 개인적 특성(성취욕구, 위험감수성 등)과 환경적 특성(네트워크 환경, 창업지원제도 등)을 확인하고, 예술 분야 전공 대학생 및 대학원생들에게 가장 많은 영향을 끼치는 요인에 대해 알아보게 될 것이다. 또한, 창업효능감의 조절 효과 양상에 대해 파악하면서 개인적 특성과 환경적 특성 중 어느 쪽에 더 깊은 효과를 나타내는지 분석하고, 결과적으로 예술 분야 전공 대학생 및 대학원생들의 창업 의지에 더 많은 영향을 끼치게 되는 창업 요인을 본 연구를 통해 구체적으로 확인하게 될 것이다. 따라서 본 연구를 통해 예술 분야 전공 대학생 및 대학원생들의 창업 의지에 영향을 끼치는 요인과 결부시켜 그들의 창업 의지를 고취시킬 수 있는 보다 명확하고 효과적인 방안을 제시하고자 한다.

• Journal of Internet of Things and Convergence
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• v.7 no.4
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• pp.59-68
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• 2021

The purpose of this study is to develop a personality education tea culture therapy program to effectively improve juvenile delinquency prevention and social adaptation. In order to verify the effectiveness of the tea culture therapy program through social intervention, we analyzed whether there were significant differences in the scores of social characteristics such as self-efficacy, self-control, and interpersonal relationships of juvenile detention students before and after participating in the program. Ten juvenile detention students between the ages of 14 and 17 who were accommodated to a juvenile detention center in B city were selected as the experimental group for the study. The tea culture therapy program was conducted 10 times as a social intervention personality education for juvenile delinquents, and as a result, self-efficacy was found to have a pre-mean of 2.37 (SD 0.33) and a post-mean of 2.49 (SD 0.31), showing a significant difference (Z=-5.874. P=.000), self-control showed a significant difference with the pre-mean 2.06 (SD 0.20) and the post-mean of 2.16 (SD 0.19) (Z=-4.743, P=.001). The interpersonal relationship was found to have a significant difference, with a pre-mean of 1.90 (SD 0.32) and a post-mean of 2.15 (SD 0.21) (Z=-5.892, P=.000). The above results show that this program has a significant effect on improving social characteristics such as self-efficacy, self-control, and interpersonal relationships among juvenile detention students. Therefore, the tea culture therapy program developed in this study for personality education for juveniles can be used as a personality education program for various types of adolescents as well as in the field of correctional welfare in the future.

• Proceedings of the Korean Society for Information Management Conference
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• 2005.08a
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• pp.157-164
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• 2005

지금까지 전자저널 서비스를 대상으로 한 연구는 정보원으로써의 전자저널에 대한 접근성의 문제나 비용문제에 중점을 두고 이루어져왔으며, 전자저널 서비스에 대한 이용자집단의 정보이용행태에 관한 연구는 대학교수를 대상으로 수행된 것 외에는 거의 찾아볼 수가 없었다. 본 연구의 목적은 대학도서관의 주요 이용자집단 중의 하나인 대학원생, 특히 인문계열과 공학계열 대학원생들의 전자저널에 대한 정보 요구 및 이용행태에 관해 과학적${\cdot}$체계적인 분석을 통하여 대학도서관이 효율적인 전자저널 서비스를 수행하는데 있어서의 기초 자료를 제공하는데 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11b
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• pp.1523-1526
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• 2002

국내의 소년원은 교육과 감호를 위한 제반시설을 갖추고 있다. 실제로 교육보다는 감호에 더 비중을 두고 있다. 그리하여 소년원 교육은 감호와 교육을 병행하는데서 오는 갈등을 겪고 있다. 지식정보화 사회가 되었고, 소년원리 개방화가 불가피하다. 오직 다른 게 있다면 통제 되어있다는 것일 뿐 일반 중고등학교와 똑같은 학습환경이 요구 된다. 교육적인 차원에서 접근을 하면 인터넷 환경조성을 위한 컴퓨터실의 시설과 장비가 지원되어야 하고, 속도개선을 위해서는 초고속 위성통신망이 구축되어야 한다. 각종 저작도구와 프로그램들을 확보하고 활용하여 자체적으로 유용한 프로그램들이 개발되어야 하며, 해결학 수 있는 능력 개발이 요구된다. 이러한 문제 해결로 향후 소년원생들의 인터넷 활용의 활성화를 기대해본다. 그리고, 이 논문을 계기로 소외된 소년원생 인터넷 교육에 관심을 가져보기 바란다.

• Microbiology and Biotechnology Letters
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• v.31 no.3
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• pp.264-270
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• 2003

A quantitative survey of the protozoa microfauna at bioreactor of advanced sewage treatment plant was carried out during a period of 11 months. In this study, 32 genera were identified, including 17 ciliates. The abundance of the important protozoa were compared with the operating parameters and water quality of the effluent of the plant using statistical procedure. Statistical analysis revealed a relationship between the abundance of some genera and removal rate. In particular, correlation analysis on the quality of effluent and protozoa indicated that Lepadella may be used as the bioindicator of TP removal and Trochilia, Entosiphon, Colepus may be used as the bioindicator of TN removal when water temperature was below $20^{\circ}C$.

• Ocean and Polar Research
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• v.26 no.4
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• pp.567-579
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• 2004

To investigate the spatial distribution and community structure of heterotrophic protists, we collected water samples at 23 stations of central Barents Sea in August, 2003. This study area was divided into three area with physico-chemical and chi-a distribution characteristics: Area I of warm Atlantic water mass, Area III of cold Arctic water mass and Area II of mixed water mass. Chl-a concentration ranged from 0.18 to $1.04{\mu}g\;l^{-1}$ and was highest in Area I. The nano-sized chi-a accounted fur more than 80% of the total chi-a biomass in this study area. The contribution of nano-sized chi-a to total chi-a was higher in Area I than in Area II. Communities of heterotrophic protists were classified into three groups such as heterotrophic nanoflagellates (HNF), ciliates and heterotrophic dinoflagellates (HDF). During the study periods, carbon biomass of heterotrophic protists range from 11.3 to $38.7{\mu}gC\;l^{-1}$ (average $21.0{\mu}gC\;l^{-1}$), and were highest in Area I and were lowest in Area III. The biomass of ciliates ranged from 4.2 to $19.3{\mu}gC\;l^{-1}$ and contributed 31.5-66.9% (average 48.1%) to the biomass of heterotrophic protists. Ciliates to heterotrophic protists biomass accounted fur more than 50% in Area I. Heterotrophic dinoflagellates biomass ranged from 5.7 to $18.4{\mu}gC\;l^{-1}$ and contributed 27.1 to 56.3% (average 42.8%) of heterotrophic protists. Heterotrophic dinoflakellates to heterotrophic protists biomass accounted fur about 50% in Area III. Heterotrophic nanoflageltate biomass ranged from 0.5 to $3.4{\mu}gC\;l^{-1}$ and contributed 3.2 to 19.6% (average 9.2%) of heterotrophic protists. Heterotrophic nanoflagellates to heterotrophic protists biomass accounted fur more than 10% in Area III. These results indicate that the relative importance and structure of heterotrophic protists may vary according to water mass. Heterotrophic protists and phytoplankton biomass showed strong positive correlation in the study area The results suggest that heterotrophic protists are important consumers of phytoplankton, and protists might play a pivotal role in organic carbon cycling In the pelagic ecosystem of this study area during the study period.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.207-212
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• 2005

제7차 교육과정에 따라서 집필된 지구과학 I, II 교과서와 국내외 각종 지구과학 교재의 지질 연대 자료를 검토하였다. 지구과학 I, II 교과서의 자료는 대부분 최신의 자료가 아니며, 많은 자료들은 지질학 원론과 지구과학 개론 등의 국내 대학 교재에 제시된 수 십년 전의 자료를 그대로 따랐다. 또한 외국 대학의 지구과학 또는 지질학 개론서의 경우에서도 유사하게 수 십년 전의 자료를 제시하고 있다. 최근 국제 층서 위원회(ICS)에 의하여 연구 제시된 국제 층서 챠트(ICS 2000), 국제 지질 연대표(IGTS 2003) 및 지질 연대표(GTS 2004) 등의 많은 새로운 자료들이 제시되어 있다. 새로운 자료 중에서 중요한 것들에는 신생대의 고제3기와 신제3기, 석탄기의 미시시피아세와 펜실베니아세, 원생이언의 고원생대, 중원생대 및 신원생대 그리고 시생이언의 시시생대, 고시생대, 중시생대 및 신시생대를 들 수 있다. 이들 새로운 지질 연대 자료는 새로운 지구과학 교과서 집필시 인용되어야 할 것이다.