• The Mathematical Education
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• v.52 no.4
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• pp.465-481
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• 2013

In this study, 27 pre-service teachers presented virtual mathematics instruction to develop his/her own teaching practice ability. I found several attributes in their virtual mathematics instruction such as connecting contents, asking justification, encouraging students' communication, representing variously, and using ICT etc. These will be the characteristics of the future mathematics class. When peer pre-service teachers assess presenter's instruction quantitatively, there are differences in the results between expert and pre-service teachers. Pre-service teachers didn't find the elements of student self assessment or group assessment and communication activities at the virtual instruction. When they assess peers' virtual instruction qualitatively, the results are specific or new ones compared with the quantitative assessment elements. Thus I suggested some implications for the mathematics pre-service teachers' virtual instruction in the view of teacher education.

• Journal of The Korean Association For Science Education
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• v.36 no.5
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• pp.769-781
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• 2016

This study investigated the interactions among the PCK components of pre-service secondary chemistry teachers considered in the processes of making written test items individually and in small groups. The processes of making written test items individually for 8 pre-service teachers was studied through the think-aloud method. The analysis of the results revealed that the 'assessment in science education' of the five PCK components was most frequently used in making test items. 'Curriculum for science education,' 'subject matter knowledge,' and 'students' were also frequently used although fewer than the previous component. However, 'instructional strategies and instruction for science education' was hardly used. The integrations between two or three components with various types were frequently found. However, integrations among four to five components were not found. The processes of making written test items in two small groups consisting of four pre-service teachers were observed. The analysis of the results revealed that the PCK components used in small groups were similar to those in the individual processes. However, 'curriculum for science education' was less frequently used, and the numbers of subcategories used at a relatively high frequency increased from other four components in small groups. In the aspects of integration, the proportion of the integrations between two components decreased and that for three components increased compared with those in the individual processes. The integrations among four or five components were also newly found. However, the integrations of 'curriculum for science education' with the other components were less frequently found. The integrations of 'instructional strategies and instruction for science education' with other components were still hardly found.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.16 no.4
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• pp.491-505
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• 2018

As an alternative to deep geological disposal technology, which is considered as a reference concept, the domestic applicability of deep borehole disposal technology for high level radioactive waste, including spent fuel, has been preliminarily evaluated. Usually, the environment of deep borehole disposal, at a depth of 3 to 5 km, has more stable geological and geo-hydrological conditions. For this purpose, the characteristics of rock distribution in the domestic area were analyzed and drilling and investigation technologies for deep boreholes with large diameter were evaluated. Based on the results of these analyses, design criteria and requirements for the deep borehole disposal system were reviewed, and preliminary reference concept for a deep borehole disposal system, including disposal container and sealing system meeting the criteria and requirements, was developed. Subsequently, various performance assessments, including thermal stability analysis of the system and simulation of the disposal process, were performed in a 3D graphic disposal environment. With these analysis results, the preliminary evaluation of the domestic applicability of the deep borehole disposal system was performed from various points of view. In summary, due to disposal depth and simplicity, the deep borehole disposal system should bring many safety and economic benefits. However, to reduce uncertainty and to obtain the assent of the regulatory authority, an in-situ demonstration of this technology should be carried out. The current results can be used as input to establish a national high-level radioactive waste management policy. In addition, they may be provided as basic information necessary for stakeholders interested in deep borehole disposal technology.

• Journal of Educational Research in Mathematics
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• v.22 no.4
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• pp.535-555
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• 2012

The aim of this study is to analyze how the context problems by prospective teachers are solved. In order to achieve this aim, this study examined the conceptual nature of context based on previous studies. I developed context problems about linear programming with reference to the results of the examination about the natural characterization of context. These problems were given to 44 prospective teachers and qualitative methods were used to analyze the data obtained from the written solutions by the participants. This study also developed the framework descriptors for this analysis in the light of the Mathematics Scoring Rubric from Illinois Department of Education(2005). The data was analyzed and interpreted in terms of this framework and the specific characteristics shown in the process of problem solving by the teachers were categorized into four types as a result.

• Journal of The Korean Association For Science Education
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• v.32 no.7
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• pp.1157-1168
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• 2012

This study examined the effect of simulated instruction activities based on a constructivist teaching approach on epistemological belief, science teaching efficacy belief, and teaching motivation. The RTOP (Reformed Teaching Observation Protocol) played a role to guide preservice biology teachers to obtain insights on current reformed teaching and to further practice teaching based on constructivism. The results indicated that preservice teachers changed their epistemological beliefs toward more sophisticated views, especially for 'simple knowledge'. They also improved their science teaching efficacy beliefs, both personal science teaching efficacy belief (PSTEB) and science teaching outcome expectancy (STOE). In addition, these perservice teachers decreased their scores of extrinsic teaching motivation. The Pearson correlation represented the negative relationship between personal science teaching efficacy belief (PSTEB) and extrinsic teaching motivation. After intervention, the preservice teachers mentioned inquiry, active participation and discussion as ideal science teaching methods and qualifications for science teachers.

• The Journal of the Korea Contents Association
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• v.21 no.9
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• pp.723-741
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• 2021

The purpose of this study is to develop a family resilience program for families of children with ADHD. For this purpose, a preliminary program was developed as a pre-program development stage and its effectiveness was evaluated. To develop a preliminary program, a prior study was reviewed before developing the program, which was carried out. The program was conducted after recruiting seven mothers of children diagnosed with ADHD. It was operated for a total of eight sessions, two times a week, for 120 minutes. A single system design was designed to assess the effectiveness of the developed Family Resilience program. Then, the Family Resilience goals of the individuals set by the research participants were measured. The results of the study showed a slight increase in scores for all participants in the program. By discussing the effects, limitations and suggestions of the developed preliminary program, we hope that a family resilience program for families of children with ADHD will be developed based on this preliminary program research.

• Journal of the Korean School Mathematics Society
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• v.25 no.2
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• pp.195-224
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• 2022

In this study, pre-service mathematics teachers cultivated technology content teaching knowledge (TPACK) in the regular curriculum of the College of Education. The course was designed to enhance pre-service teachers' mathematical communication skills by using an application, which is a mobile mathematics learning content for the development of group creativity of high school students. The educational program to improve mathematics teaching expertise using the application for group creativity expression consists of pre-education, goal setting, planning, teaching at school, and evaluation. In this process, pre-service teachers evaluated technology tools. They also wrote a task dialogue, lesson play, reflective journal, and lesson plan to guide high school students to develop group creativity in both app activities. As a result of the educational program, pre-service mathematics teachers cultivated TPACK and enhanced their mathematical communication skills with high school students to develop group creativity.

• Korean Journal of Social Welfare
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• v.64 no.3
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• pp.127-153
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• 2012

This study aims to develop the case management activities inventory relevant to community-based mental health settings. The comprehensive literature review was conducted to define the concepts and activities for the case management process. After the content analysis from the professional scholar and the mental health-related worker, 83 items were constructed. A survey was conducted to 265 case managers in community mental health centers. Through exploratory factor analysis, reliability and validity analysis, finally 8 factors and 43 items were identified.

• Journal of Korea Technology Innovation Society
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• v.16 no.1
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• pp.176-198
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• 2013

Preliminary feasibility study(PFS) was introduced in 1999 by financial authority to encourage a cautious approach to new large-scale public investment project. As it applied cost-benefit analysis as prime measure for decision-making, various issues have been arisen concerning feasibility analysis on R&D programs. This work is intended to suggest standard approaches to be established in PFS on R&D program as follows: 1. The issue questions can be induced in a standard way by 15 representative questions and their correlation with evaluation criteria. 2. The analyzing strategy can be standardized by establishing standards for classification of R&D effects and R&D logic analysis.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.1545-1549
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• 2008

최근 이상홍수나 가뭄과 같은 물 관련 재해의 발생빈도가 높아지고, 산업 고도화, 인구증가와 같은 원인에 의해 장 단기적 물 부족 현상이 우려되면서 수자원 사업에 대한 관심이 고조되고 있다. 대부분의 수자원 사업은 공공성이 매우 크기 때문에 대규모 정부예산의 투입을 필요로 하고 있으나, 수자원사업의 특성상 사업의 공공성에 반하여 사업 시행에 따른 여러 경제적, 정책적 이해관계가 난립하여 사업 시행에 어려움이 따르고 있는 것이 실정이다. 이에 따라 '수자원(댐)부문사업의 예비타당성조사 표준지침 연구-제3판'에서는 수자원 사업의 타당성 평가를 위해 크게 경제성분석과 정책적분석의 두 부문으로 접근하고 있으며, 최종적으로 다기준의사결정기법 중 하나인 AHP기법을 이용하여 결정함으로써 수자원 사업의 가치 평가에 대한 이해를 돕고 있다. 본 연구에서는 지난 1999년부터 2006년까지 수행된 수자원분야 및 타분야의 사례를 바탕으로 수자원사업 예비타당성조사의 실태를 파악함으로써 현재 지적되고 있는 문제점을 고찰하고 그에 따른 해결방향을 제시하고자 하였다.