• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.2
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• pp.169-174
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• 2018

In general, the methods of the analysis of variance(ANOVA) for the continuous data and the chi-square test for the discrete data are used for statistical analysis of the effect and the association. In multidimensional data, analysis of hierarchical structure is required and statistical linear model is adopted. The structure of the linear model requires the normality of the data. A multidimensional categorical data analysis methods are used for causal relations, interactions, and correlation analysis. In this paper, Bayesian network model using probability distribution is proposed to reduce analysis procedure and analyze interactions and causal relationships in categorical data analysis.

• The Mathematical Education
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• v.60 no.2
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• pp.209-228
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• 2021

The purpose of this study is developed the Item Feature Analysis (IFA) frameworks for curriculum-based assessments, focusing on Math competency and representation in secondary schools and implemented the IFA in National Assessment of Educational Achievement. To conduct the study, previous studies were analyzed, and feasibility studies were conducted twice. As a result of the study, we structured the IFA framework based on the 2015 revised mathematics curriculum in Korea and developed a method to analyze the characteristics of the math items. The results of structuring the framework for math included two categories: math competency in the content aspects, and representation type in the formal aspects. Specifically, 12 features of math competency and 8 features of representation type were identified, and an item feature analysis framework composed of these features was developed. The math competency was developed based on the subject competency of 2015 national curriculum. Math assessments in high schools, which have been changed to the competency-based assessments, had more frequency of the feature of math competency compared to middle schools. In this study, implemented the IFA in National Assessment of Educational Achievement and explored the way of ensuring the validity. These have been proved as critical applications for ensuring the validity of curriculum-based student assessment as well as building a tool for assessment.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.339-340
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• 2015

본 연구는 노약자용 기능성 운동 시나리오 설계에 앞서 특정 대상인 노약자들을 다양한 측면에서 이해하고자 수행하였다. 따라서, 노약자에게 적합한 운동 환경 및 게임 환경에서 고려해야 하는 사항들을 신체적 특성, 심리적, 인지적 특성 및 사회적, 물리적 특성 그리고 적합한 게임 환경 등에 대하여 체계적 문헌연구(systematic review)를 통하여 조사하고 범주화 한 후 전문가들의 검증을 거쳐 목록화하였다.

• Journal of The Korean Association For Science Education
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• v.18 no.3
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• pp.313-325
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• 1998

The purpose of this study was to develop for PLEIS(Psychological Learning Environment Instrument generated by science teachers). The procedure of validations' PLEIS is also examined. Samples of 1.274 for this study were selected from the secondary school students. It was conducted as a procedure development of the instrument with teachers' perception survey, students' perception response survey. second pilot for the measurement instrument. Findings indicate as the follows. (1) PLEIS was formed 3rd construct dimension, 9th subcategory. (2) the instrument consisting of 45-items' scale were used for psychological learning environment. (3) all item-type were applied 5-Likert Scale. (4) internal consistency of Cronbach ${\alpha}$ was 0.93.

• Journal of the Korea Concrete Institute
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• v.26 no.4
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• pp.465-474
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• 2014

This is a comparative study that shows the overall environmental impacts from concrete structures when different compressive strength of concrete applied to structural systems having the same reference flow with different durability. A total of 24 MPa, 40 MPa and 60 MPa cases is analyzed to define the characteristic using end-point perspective LCA methodology including the stages of production, construction, maintenance and disposal. As results, global warming, non-renewable energy and respiratory inorganics problems are the major issues for assessing environmental impacts of concrete products.

• Journal of Science Education
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• v.38 no.2
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• pp.231-243
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• 2014

The purpose of this study was to compare the duplication problem of achievement standards between science and other subjects in the 2009 Revised National Curriculum and to search for solutions and implications for this problem. From the results of this study, we found that the achievement standards of practical arts, social studies, physical education and ethics were overlapped with science's ones. The duplication of content elements for 'our body and health', 'living things and environment', 'biodiversity' and 'natural disaster' categories was not high, that is, their achievement standards were relatively well-differentiated and reflected the intrinsic characteristic of each subject under common topics. But, in case of 'reproduction and development' and 'world of technology' categories, the problem of duplications was serious. In order to cope with this problem, we need to consider solutions such as merging or integrating the achievement standards of related subjects. The relevant experts should conduct in-depth discussion and negotiation, and develop achievement standards more consistent with the identity of each subject.

• Journal of Aerospace System Engineering
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• v.16 no.3
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• pp.52-62
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• 2022

In the SORA methodology developed for the operational risk assessment of a specific category of operation of a UAS, the ground and the air risk levels are determined, and a SAIL indicating the level of assurance and integrity for the corresponding risk is assigned, and accordingly, the operational safety level for the proposed operation. Objectives should be demonstrated at an appropriate level of robustness. Because of the nature of the specific category of operation, people on the ground are the first risk subjects to be considered. The resulting ground risk class plays an important role in the allocation of SAIL. In this paper, the impact on SAIL and OSO according to the final risk level and the reduction of the level through the determination of the ground risk level and the application of mitigation measures among risk assessments for specific categories of UAV operation was investigated.

• Journal of Korean Society of Archives and Records Management
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• v.22 no.3
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• pp.55-81
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• 2022

The purpose of this study is to explore a budget-securing strategy to enable archival professionals in public institutions to continuously secure the budget for records management projects. This study is an analysis of the results of in-depth interviews with 14 archival professionals who have worked for public institutions and secured budgets for records management projects. As a result of the analysis, 4 upper categories and 10 categories are extracted as factors influencing budget securement. The top four categories are the job environment of archival professionals, umbrella organization and organizational culture, business and budget characteristics, and system and social environment. As the budget-securing strategy for archival professionals, a total of 3 categories and 13 strategic codes are derived. The three categories are utilizing individual-centered competencies, establishing organization-centered relationships, and finding external environment-centered triggers. This study emphasized the perspective of archival professionals and suggested implications such as the role of archival professionals and the direction of improvement in securing budgets.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.29 no.3
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• pp.124-133
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• 2011

The purpose of this study is to interpret the landscape characteristics of Changdeokgung's rear garden with the idea of Yijing(意境) the way to have a sense of an imaginative object. A term of Jing(境) in Yi-jing means a boundary of man's consciousness. On the boundary of consciousness for an imaginative object, there is a situation of man's emotion to be called Qingjing(情境) to meet an object, and beyond Qingjing, there is Yijing, a consciousness of the idea and the truth. The Structure of the Yijing is an analytical framework in this study. It is clarified that the idea of Yijing and landscape characteristics of changdeokgung's rear garden to analyze works of kings and related historical documents. In result, there were three kings named Injo, Sukjeong and Jeongjo who played big roles to develop the rear garden. First, Injo had built physical structure of the rear garden, the second Sukjong enjoyed Qingjing with composing the poems of Sangrimshipkyoung(上林十景), Jeongjo clearly had made a boundary of idea of Yijing broaden. It is an effective way to interpret imaginative characteristics of our traditional landscape through the concept of Yijing the useful way to understand and systemize a subject of idealistic consciousness.

• Korean Journal of Culture and Social Issue
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• v.27 no.4
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• pp.351-389
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• 2021

This qualitative study aimed to develop a structural framework that explains the process of psychological adaptation and sequential changes being perceived by Korean people under the COVID-19 Pandemic past year. Setting a tentative analysis frame induced from antecedent literatures about psychological phenomena during the COVID-19 pandemic, the qualitative data were collected from 6 Korean adults by semi structured individual interviews. For the data, content analysis applied from the grounded theory were performed. As a result, the initial framework was extended and revised to describe the psychological phenomena under the pandemic. This paradigm structure includes the process of 'causal factors ⇒ psychological main phenomena ⇒ sequential results' being intervened by personal contextual situations and psychological characteristics, as moderators. The category of causal factors were the COVID-19 pandemic, relevant critical incidents, and social distancing policy. The main phenomena reflected either positive, negative, or complicated experiences. The sequential psychological results included transformation of cognitive system or behavior patterns. Various variables such as psychological sense of community and social responsibility, psychological capability for leisure, and positive psychological capital were found out as moderating factors. In discussion and conclusion, theoretical/practical implications of the results and direction to study in the future were suggested.