화학사고 발생 시 주민 피해 최소화 방안 연구

정인우(In Woo Jeong),이익모(Ik Mo Lee),황용우(Yong Woo Hwang),김영운(Young Woon Kim) 한국위험물학회 2018 한국위험물학회지 Vol.6 No.1

The purpose of this paper is to find the system that can be introduced in Korea in order to minimize damage in case of chemical accidents from the result of reviewing the chemical management systems of the US and EU. The Korean Chemical Management Act, the US Emergency Planning and Community Right to Know Act, and the EU Seveso Directive are the scope of the study. We proposed five systems that can be introduced in Korea. First, the Korean Chemical Substance Management Act does not have local participations. This is because we don"t have local emergency response systems. Therefore, Korea local emergency response systems such as SERC and LEPC in the US should be installed. Second, the Korean local emergency response system, have to make an emergency response plan as well as an emergency response plan for each workplace established in the risk management plan. Third, it is possible to minimize the damage caused by chemical accidents by reporting to the Korea local emergency response system. Fourth, in the European Seveso Directive, they regulate large-scale workplace more effectively than small- and medium-sized ones by regulating the scale of harmful substances. We can introduce similar way so we can regulate more effectively. Fifth, we have to make a way that can collect opinions of residents (public) when we make a local emergency plan. Also, in this paper, we checked the law of city A and city B to find out our five proposed systems are exist or not and examined the differences between them and the foreign system. In addition, set three and ten years" time to suggested what kind of system should be introduced first in each period in establishing the Korean emergency response system. The first step is to establish an emergency response plan for each industrial complex through six chemical disaster prevention centers (Yeosu, Siheung, Seosan, Ulsan, Iksan, and Gumi) during the current operation. In my opinion, it is right to establish an emergency response plan for an industrial complex (area) in the environmental team under the Ministry of Environment, which is the executor of the Chemical Substance Control Act. The second step is installing a regional branch office. In this branch, I believe it is right not only to plan for the regional emergency response system but also to respond to the occurrence of a chemical accident. And public involvement in establishing a regional emergency response plan at the installed branch in the third order. The fourth step is to expand the scope of the notification to the branch office where the chemical accident occurred. The final order is the separate management of the handling of chemicals over the reference quantity.

기후변화 주제 문제중심학습(PBL)이 고등학생들의 컴퓨팅 사고력에 미치는 효과

정인우(In Woo Jeong),홍석영(Seok Young Hong),위수민(Soo Meen Wee) 학습자중심교과교육학회 2022 학습자중심교과교육연구 Vol.22 No.22

목적 본 연구는 고등학생들의 컴퓨팅 사고력을 촉진할 수 있는 문제중심학습 수업을 개발하고, 학습단계에서 나타나는 컴퓨팅 사고력을 파악하고자 하였다. 방법 이를 위해 고등학생 1학년 57명을 대상으로 기후변화 주제의 총 8차시 교수학습활동(CT-PBL)을 설계하여 실시하였다. 수업 전후 컴퓨팅 사고력 측정 설문을 실시하여 대응표본 t-test를 이용해 분석하여 수업의 효과를 검토하고, 활동보고서와 이를 기반으로 한 반구조화 된 면담을 진행하며 문제해결과정에서의 사고 과정과 컴퓨팅 사고력의 관계를 분석하였다. 결과 첫째, 적용 결과 컴퓨팅 사고력의 4가지 영역에서 모두 유의미한 향상을 보였다. 특히 사전점수가 낮았던 알고리즘 절차 측면의 CT에서 높은 향상이 나타났다. 둘째, 문제해결과정의 각 단계에서 학생들은 다양한 사고 과정을 거치며 컴퓨팅 사고력의 다양한 하위요소를 활용하는 것을 확인할 수 있었다. 한편 나아가 컴퓨팅 사고력의 복합적인 활용, 사고의 회귀적 과정 등을 파악하였다. 결론 이러한 결과를 기반으로 컴퓨팅 사고력의 복합적인 발현의 구체적인 상관관계 파악, 수업 소재에 따른 컴퓨팅 사고력 활용과 같은 후속연구를 제안하였다. Objectives The purpose of this study is to develop a problem-based learning class that can promote high school students' computational thinking and to identify computational thinking that appear in the learning stage. Methods To this end, a total of 8 teaching-learning activities (CT-PBL) on climate change subject were designed and implemented for 57 first-year high school students. Before and after class, a questionnaire was conducted to measure computational thinking and the effect of class was reviewed by analyzing it using the paired t-test. In addition, a semi-structured interview based on the activity report was conducted to analyze the relationship between the thinking process and computational thinking in the problem-solving process. Results First, as a result of application, all four areas of computational thinking showed significant improvement. In particular, there was a high improvement in the algorithmic procedure of CT, which had a low prior score. Second, at each stage of the problem-solving process, students went through various thinking processes and were able to confirm that they utilized various sub-elements of computational thinking. On the other hand, the complex use of computational thinking and regressive thinking processes were also identified. Conclusions Based on these results, follow-up studies such as identifying specific correlations in the complex expression of computational thinking and utilizing computational thinking according to class materials were proposed.

Floating Gate FET를 위한 수직 전계 효과 트랜지스터의 집적 공정 개발

정인우(In-Woo Jeong),이선정(Seon-Jeong Lee),백승재(Seung-Jae Baik) 대한전자공학회 2022 대한전자공학회 학술대회 Vol.2022 No.6

Floating Gate FET를 위한 수직 전계 효과 트랜지스터의 집적 공정 개발 및 특성 측정

정인우(In-Woo Jeong),백승재(Seung-Jae Baik) 대한전자공학회 2022 대한전자공학회 학술대회 Vol.2022 No.11

발레무용수의 공연 전, 후 신체조성, 에너지대사 및 혈청 지단백의 변화

김수연(Kim, Soo-Youn),조정호(Cho, Jung-Ho),신말연(Shin, Mal-Ryun),이지현(Lee, Ji-Hyun),정재현(Jung, Jae-Hyun),김선민(Kim, Sun-Min),정인우(Jeong, In-Woo) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.6

The purpose of the study was to investigate the body composition, energy metabolism, and serum lipoprotein profiles in female ballet dancers before and after a ballet performance. The subjects were cluster sampled 43 female ballet dancers of which 9 from an amateur ballet company, 15 from a semi professional company, and 19 from a professional company. The bioelectrical impedance method was used to measure the BMI, %BF, TBW, and LBM. The computer aided nutrition analysis program and 24 hour recall method were used to measure the energy intake and expenditure, and physical activities for 7 days before and 7 days after a ballet performance. The serum lipoprotein profiles of LDL C, HDL C, TG, and the TC/HDL C ratio were examined by Enzymatic Colorimetry Method. The Analysis of Covariance and Multiple Range Test were applied to statistical significance. The results showed that there were significant differences in the BMI, %BF, EE among three ballet groups(p<.05), but not in the TBW, LBM, EI, LDL C, HDL C, TG, and TC/HDL C ratio. In conclusion, professional ballet dancers exert very high levels of energy expenditure in preparation for the performance while limiting their energy intake in order to decrease their very low levels of body weight and fat.

발레 활동시 pyridoxal phosphate섭취가 혈액 성분 및 혈중 지질농도에 미치는 영향

신말연(Shin, Mal-Ryun),조정호(Cho, Jung-Ho),이지현(Lee, Ji-Hyun),정재현(Jung, Jae-Hyun),김선민(Kim, Sun-Min),정인우(Jeong, In-Woo),김수연(Kim, Soo-Youn) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.2

The purpopse of this study was to determine the effect of pyridoxal phosphate supplementation with ballet exercise on cell blood components and blood lipids. 14 young female were participated in 4weeks study for a double blind and subjects were randomly assigned to one of the three groups, i.e., Group Ⅰ (n=4): placebo(2.4㎎/day); Group Ⅱ (n=5): pyridoxine(1.6㎎/day); GroupⅢ(n=5): pyridoxine(2.4㎎/day) with ballet exercise 3-5 times per week. Study subjects measured white blood cells(WBC), red blood cells(RBC), hematocrit(HCT), hemoglobin(Hb), triglyceride(TG), low-density lipoprotein cholesterol(LDL-C) and free fatty acids(FFA), before and after the treatment. Analysis of Covariance (ANCOVA), Multiple Range Test(Scheffe) were used to determine the statistical significance. There were no group differences in the hematocrit, hemoglobin and serum lipid lipoprotein, but WBC and RBC were significantly changed(p<.05). The result of this study does not lend support to the contention that pyridoxal phosphate intake has much practical impact on ballet exercise performance as a ergogenic acid. However, it does appear that several significant research topics in pyridoxal phosphate biochemistry metabolism as well as ballet exercise and nutrition can be explored profitably in the future using experimental designs involving interaction between pyridoxal phosphate status and exercise performance.

차선의 시인성 향상을 위한 SrAl₂O₄ : Eu²⁺,Dy³⁺ 축광 마이크로 캡슐화에 관한 연구

박재일 ( Jae Il Park ),정수환 ( Soo Hwan Jeong ),정인우 ( In Woo Cheong ) 한국접착및계면학회 2016 접착 및 계면 Vol.17 No.3

야간 우천시 수막에 의한 차선의 재귀반사 효율 감소로 운전자의 시인성이 저하되고 있으며 이로 인해 많은 사고가 발생한다. 시인성을 높이기 위해 메틸메타크릴레이트의 현탁중합 시 소수성으로 표면이 개질된 SrAl₂O₄ : Eu²⁺,Dy³⁺ 축광 물질을 도입하고 이를 캡슐화하였다. 표면 개질에 사용된 물질과 라디칼 개시제의 종류, 사용된 축광 물질의 양, 그리고 캡슐의 입도가 캡슐 내부의 축광 물질 함량(WTGA)에 미치는 영향을 TGA를 사용하여 분석하였다. 그 결과 축광 물질의 함량은 7~81 wt%까지 넓은 분포를 나타내었으며, 이러한 결과는 현탁중합이 넓은 함량 범위의 축광 물질을 캡슐화하는데 적합한 것을 의미한다. 축광 물질의 함량이 낮은 경우에는 캡슐의 입도가 감소함에 따라 WTGA이 증가하였으나, 축광 물질의 함량이 높을 때에는 캡슐의 입도에 별 영향을 받지 않았다. 축광 캡슐 중 지름 425~710 μm의 축광 캡슐을 활용하여 형광 차선 시편을 제작하였으며 LED램프를 20 min 동안 조사한 후 광원을 제거하였을 때, 100 s 동안 약 300 mcd/㎡ 이상의 휘도를 유지했다. 이러한 결과로 미루어 보아 제조된 축광 캡슐은 차선 위의 유리 비드를 대체하기에 충분한 가능성을 가짐을 알 수 있었다. A decrease in the retro-reflectivity of glass-bead-covered road paint because of a rainwater film significantly reduces the visibility of drivers at night, and has been considered as a critical cause of traffic accidents. For enhanced visibility, the microencapsulation of hydrophobically modified SrAl₂O₄ : Eu²⁺,Dy³⁺ phosphorescent phosphor was carried out via suspension polymerization of methyl methacrylate (MMA). The effects of surface modification agent and radical initiator types, loading amount of phosphorescent phosphor, and microcapsule size on the phosphor content (W_TGA) in the luminous poly(methyl methacrylate) (PMMA) microcapsules were investigated by thermogravimetric analyses (TGA). It was found that the W_TGA value was ranged from 7 wt% to 81 wt%, which suggests suspension polymerization is suitable for the preparation of luminous microcapsules with a wide range of phosphor content. At a lower loading amount of phosphor, the W_TGA value obviously increased as the microcapsule size decreased; however, the W_TGA values with a higher loading amount of phosphor were less affected by the microcapsule size. The luminous microcapsules with the size range of 425~710 μm were collected and tested as a luminous road lanes. It was found that luminance intensities of the microcapsule-coated plates remained higher than 300 mcd/㎡ for up to 100 s in darkness after 20 min of light emitting diode lamp irradiation. The results suggest that the luminous microcapsules can be a candidate for the replacement of glass beads for enhanced visibility of drivers.