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손종식,이현규,김택진,김지용,전홍래 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.9
The Korea Atomic Energy Research Institute (KAERI) is planning the construction of the KIJANG Research Reactor (KJRR) for stable supply of 99Mo. The Fission 99Mo Production Process (FMPP) of KJRR produces solid waste such as spent uranium cake and alumina cake, and liquid waste in the form of intermediate level liquid waste (ILLW) and low level liquid waste (LLLW). This study thus established the operating range and optimum operating conditions for the cementation of ILLW from FMPP. It also evaluated whether cement waste form samples produced under optimum operational conditions satisfy the waste acceptance criteria (WAC) of a disposal facility in Korea (Korea radioactive waste agency, KORAD). Considering economic feasibility and safety, optimum operational conditions were achieved at a w/c ratio of 0.55, and the corresponding salt content was 5.71 wt%. The cement waste form samples prepared under optimum operational conditions were found to satisfy KORAD's WAC when tested for structural stability and leachability. The results indicate that the proposed cementation conditions for the disposal of ILLW from FMMP can be effectively applied to KJRR's disposal facility
최진승,손종식 東亞大學校 學生生活硏究所 1993 學生硏究 Vol.21 No.-
The purpose of this study is research on the development of Motivated Strategies for Learning Scale of elementary children and secondary school students. The male and the female subjects were 481 5th grade and 501 6th grade elementary children, and were 430 1st grade, 398 2nd grade, and 402 3rd grade middle school students, and were 374 1st grade and 381 2nd grade high school students. The preliminary items were analyzed by item analysis and factorial analysis, and correlations between subfactors of Motivated Strategies for Learning Scale and academic achievement scores of Korean, mathematics, and English. From the results and discussions, conclusions as follows : 1. The Motivated Strategies for Learning Scale have five subfactors such as self-efficacy, intrinsic value, test anxiety, cognitive strategy use, and self-regulation. 2. Useable and good items of Motivated Stategy for Learning Scale were 90 items among 100 developed items according to the item analysis and factor analysis. 3. There were validity and reliability of Motevated Strategies for Learning Scale from correlations between five subfactors and Korean, mathematics, and English achievement test scores of middle school students and split half reliability test.