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金乙泳 건국대학교 교육대학원 1987 敎育論叢 Vol.8 No.-
Physical education is one of the education fields that change natural people into idealistic people through physical activities. In Korea, physical education at school is the root and trunk in all physical activities and the physical education is based on physical activities. Therefore, We can say that learning in physical education is the learning behavior that is important in the educational endeavor of formation of the "Wholeman." Consepuently, teachers try to do effective physical education and guides. In fact, however, both teachers and students are dissatisfied with the education and guides, and the results of Learning turn out poor when the results are evaluated. There are quite a few problems; among them, the problem of Learning process is the greatest. The five-step teaching process model developed by Korean Educational Development Institute and the four-step teaching process model of Glaser are frequently adopted, yet, it does not help greatly to our one-hour unit program. Therefore what is needed is a practical and effective learning that can be easily adopted in the one-hour unit physical education. Accordingly the researcher analyzed learning form of physical education in the primary school. A hypothetical Learning process model is presented, which is easy to be adopted to the physical education. Learning theories were examined in the literature review for the construction of the instruction procedure models presented in the thesis. For further development of this model was suggested in the futher.
토양세척법에 의한 중금속오염 폐탄처리장 토양의 정화 : 세척액의 선정
이상환,김을영,서상기,김권보,김재환,이종근,Lee, Sang-Hwan,Kim, Eul-Young,Seo, Sang-Kee,Kim, Gweon-Bo,Kim, Jae-Hwan,Lee, Jong-Keun 한국지하수토양환경학회 2008 지하수토양환경 Vol.13 No.2
폐탄처리과정에서 오염된 중금속 오염토양의 정화에 있어 무기산(HCl), 중성염($CaCl_2$), 킬레이트제(citric acid, $Na_2$-EDTA)들을 이용한 토양세척 가능성을 평가하였다. 실험에 사용된 추출액(HCl, $CaCl_2$, citric acid, $Na_2$-EDTA)들의 추출효율은 HCl > citric acid > $Na_2$-EDTA > $CaCl_2$의 순으로 나타났는데 HCl(1.0 M)에 의해서 Cd, Cu, Pb와 Zn이 초기농도 대비 각각 82%, 86%, 80%, 46% 정도 추출된 것으로 나타났다. 추출효율과 반응액의 pH 간에는 고도의 음의 상관관계가 존재하였다. 폐탄약처리장 부지 토양 중 중금속은 탄산염결합태, Fe, Mn-산화물 결합태 형태로 존재하고 있었는데 HCl, citric acid 세척에 의해서 이들 분획의 현저한 감소가 이루어졌지만 이동성이 상대적으로 큰 치환태가 증가되는 것으로 나타났다. 이동성이 큰 분획의 증가는 지하수 오염 등의 문제를 야기시킬 수 있음으로 이에 대한 적절한 관리가 필요할 것으로 판단된다. The efficiences of mineral acid (HCl), neutral salts ($CaCl_2$), and chelating agent (citric acid and $Na_2$-EDTA) were tested for extracting heavy metals from open burning and open detonation (OBOD) site soil. The extraction efficiencies of Cd, Cu, Pb and Zn from soil for various extractants were in the order of HCl > citric acid > $Na_2$-EDTA > $CaCl_2$, HCl (1.0 M) extracted effectively 82%, 86%, 80%, and 46% of initial total concentrations of Cd, Cu, Pb, and Zn, respectively. Significant negative correlations were observed between pH of extractant and amount of extracted heavy metals. Initially, examined heavy metals were predominantly bound to carbonate and Fe, Mn-oxide fraction. Though the significant amount of carbonate and Fe, Mn-oxide bounded metals were removed but a significant amount remained metals shifted to exchangeable (more mobile) fraction by HCl and citric acid extraction. The increased mobility of remaining metals could be problematic for water resources, thus careful management is needed to control the movement of heavy metals.
김정현,김을영 한국해양안보포럼 2019 한국해양안보논총 Vol.2 No.1
The purpose of this paper is to investigate the new relationship with China, which has grown rapidly since the 2000’s to America. China has made the maritime territorial dispute(the Senkaku, Daowi Diao) in the East China Sea and the construction of artificial islands in the South China Sea. Accordingly, I have analyzed the responses of the US to China in terms of economic, political, and military aspects. China’s maritime hegemony strategy is ‘One Belt, One Road’ strategy to defend itself off-shore defense strategy and ocean-going escort strategy in the defense white paper of 2015 under the Secretary Sijinping. To this end, China is expanding its defense spending based on the world’s second- largest economic power, spurring technological improvements and increasing naval strength. In addition, China is expanding its activities to Europe - Africa - North Pole beyond the Asia - Pacific region in order to achieve its goals on ‘One Belt, One Road’ strategy In response to the Chinese maritime supremacy challenge, the US is pursuing trade negotiations with China in order to strengthen its economic power economically under its blockade strategy against China. The outcome of the negotiations is expected to widen the economic and technological gap with China as the US maintains its current international economic order. It also attracted India, which is in a state of dispute with China, to complete the puzzle of the blockade policy against China with the Indo-Pacific strategy. The US Navy is trying to spread the technology gap with China by applying advanced science and technology to armed forces construction under the concept of offset strategy introduced in the competition with the Soviet Union in the Cold War period. In conclusion, the US is expected to overcome the maritime hegemony challenge of China by widening the GDP, defense investment, and technology gap with China with its economic, political and military response strategy and by winning the naval battle with China.
중질유 오염토양의 생물학적 처리에 있어 amendments의 효과
이상환,김을영,최호진,Lee, Sang-Hwan,Kim, Eul-Young,Choi, Ho-Jin 한국지하수토양환경학회 2007 지하수토양환경 Vol.12 No.5
중질유로 오염된 토양의 생물학적 정화에 있어 amendment의 처리효과를 보고자 포장에서 pilot 규모로 105일간 실험을 수행하였다. 실험기간 중 주기적으로 토양시료를 채취하여 유류성분과 생물학적 활성과 관련된 분석을 수행하였는데 퇴비의 처리구들에서 쌀겨+무기양분처리구에 비하여 유류성분의 분해활성이 현저하게 증가함을 확인할 수 있었다. 105일 경과 후 amendment 처리구들에서는 초기농도 $6,205{\pm}173mgkg^{-1}$의 $33{\sim}45%$가 소실된 반면 무처리구에서는 8%만이 분해된 것으로 나타났다. 퇴비처리구들에서 무처리구 및 쌀겨처리구에 비해서 높은 중질유 분해활성을 관찰할 수 있었는데 실험기간 중 모니터링한 생물학적 지표들 중 soil respiration, dehydrogenase, lipase, urease 등의 효소활성이 쌀겨처리구에 비해 현저하게 높은 활성이 관찰되었고 이들 미생물학적 지표들과 중질유의 분해정도 사이에는 높은 상관관계가 존재하였다(p < 0.01). To examine the effects of amendments on heavy mineral oil degradation, a pilot scale experiment was conducted for over 105days. During the experiment, soil samples were collected and analyzed periodically for the determination of residual hydrocarbon and microbial activities. At the end of the experiment, the initial level of contamination ($6,205{\pm}173mgkg^{-1}$) was reduced by $33{\sim}45%$ in the amendment amended soil; whereas only 8% of the hydrocarbon was eliminated in the non-amended soil. Heavy mineral oil degradation was much faster and more complete in compost amended soils. Enhanced dissipation of heavy mineral oil in compost amended soil might be derived from increased microbial activities (respiration, microbial biomass-C) and soil enzyme activity(lipase, dehydrogenase, and FDA hydrolase) were strongly correlated with heavy mineral oil biodegradaton (P < 0.01).