• Structural Engineering and Mechanics
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• v.74 no.6
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• pp.771-787
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• 2020

The paper provides an inside look into experimental measurements, followed by numerical simulations and their related uncertainties. The goal of the paper is to present findings related to blast loading and the handling of defects that are inherent in experiments. Very often it might seem that experiments are simplified reflections of real-life conditions. In most cases this is true, but there is a good reason for that. The more complex an experiment is, the larger the amount of uncertainties that can be expected. This especially applies when the blast loading of concrete is the subject of research. When simulations fail to reproduce the results of experimental measurements, it does not necessarily mean there is something wrong with the numerical model. The problem could be missing information. Put differently, the numerical simulation may lack information that seemed irrelevant with regard to the experiment. In the presented case, a reference simulation with a proven material model unexpectedly failed to replicate the results of an experiment where concrete slabs were exposed to blast loading. This resulted in a search for possible unknowns. When all of the uncertainties were examined, the missing information turned out to be the orientation of the charge to the concrete slab. Since the experiment was burdened with error, a sensitivity study had to take place so the influence of this factor could be better understood. The findings point to the fact that even the smallest defect during experiments must somehow be taken into account when designing numerical simulations. Otherwise, the simulations are not correlated to the experiments, but merely to some expectations.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.157-166
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• 2015

The aim of this study is to understand the effects of a social capital discovery program on career identity and empowerment in adolescents under probation. As a result, it was discovered that the social capital discovery program had statistically significant differences in stability, goal orientation, distinctiveness and self-presence consciousness in the sub-area of career identity in adolescents under probation while there was no significant difference in the area of self-assertion. The social capital discovery program had statistically significant differences in internal and personal relationships among the sub-area of empowerment of the subjects while there were no significant differences in political-social areas. These results suggest that the social capital discovery program had significant effects on career identity and empowerment in adolescents under probation. In order to improve the career identity and empowerment in adolescents under probation, further studies on the social capital discovery program are needed and care should be paid to its usability.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.365-379
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• 2020

The purpose of this study identifies the patterns of students' learning motivation profiles on entrepreneurial educational motivation among a sample of university students from one of the Korean national university(n=614). This study also examines the relationship between students' learning motivation profiles and entrepreneurial intention and types of entrepreneurship. In order to explore the types of leaning motivation profiles, a latent profile analysis was employed. Result from LPA revealed five distinct types of learning motivation profiles fit the data best, and these five profiles are compared with students' entrepreneurial intentions and types of entrepreneurship. Results showed that Profiles (profile 5 and 4-high goal orientation) are associated with the higher level of entrepreneurial intention. Regarding the type of entrepreneurship, the majority of all students are interested in individual and co-entrepreneurship with friend regardless of the patterns of profiles.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.601-609
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• 2014

This kind of goal orientation in Art Nouveau has provided nature-friendly designs to modern people living in a post-industrial society. For these people who want to have their own style in a natural and comfortable space and take a break from daily hectic daily routines for a moment, hair-by-night styles were created by adding the images of Greek goddesses to the nature-friendly features of Art Nouveau patterns known as 'flower pattern', 'wave pattern', and 'vine pattern'. In terms of the scope of this paper, four designs (Eos, Hestia, Artemis and Demeter) were created by using Art Nouveau patterns which are connected with flowers in an organic manner based on Rene Lalique and Emile Galle patterns.

• Journal of the Korean earth science society
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• v.28 no.6
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• pp.707-719
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• 2007

Teachers play key roles in classroom instruction. The perceptions and orientations of teachers about teaching have substantial effect on the practical context of science teaching. Analyzing science teacher's perceptions and orientations about Earth Systems Education (ESE) offers an opportunity to figure out how the goals of ESE might be dealt with. In this study, lesson plans developed by and in-depth interview results with two teachers were analyzed in terms of ESE perceptions. ESE orientations were also investigated in terms of teaching orientations and integration orientations. Research results showed that the teacher's deep understandings about 'Global Scientific Literacy (GSL)', the ultimate goal of ESE, precede the sound ESE teaching in the classroom. To enhance teachers' GSL, exemplary aspects of various integration, including networked integration, should be provided specifically to teachers. Also, the institutionalized approaches to developing ESE curriculum could help classroom teachers activate ESE teaching in their classroom.

• Information Systems Review
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• v.12 no.2
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• pp.121-144
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• 2010

Recently, ITSM(IT Service Management) is adopted very widely among private and public organizations. The successful implementation of ITSM requires continuous improvement, not just implementation of IT processes and/or ITSM solutions. One of the major tools for the continuous improvement is 6 Sigma technique. This study compares success and failure cases at the project level, and identifies factors affecting successful application of 6 Sigma technique in the improvement of ITSM. To achieve the research objective, this study first identifies and classifies success factors for 6 Sigma application through literature review. Then, factors to be used in the study are determined. Based on the factors, success and failure cases are compared. The research results show that all 5 factors (participation of management, participation of project team, project selection and verification, customer and market orientation, strategy and goal focus) are significantly different between success and failure cases.

• Korean Journal of Human Ecology
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• v.24 no.6
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• pp.755-768
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• 2015

The purpose of this study was to verify the mediating effects on self-regulated learning ability and sense of community in the relationship between parents' neglect and children's academic achievement. The subjects used in this study were 2,218 6th grade elementary school students from the third wave sample of the 2012 Korean Children and Youth Panel Survey (KCYPS). For data analysis, the three-step mediated regression analysis by Baron and Kenny (1986) was performed and the Sobel test was carried out in order to verify the effectiveness of mediation effects. The main results of the present study were as follows. First, the self-regulated learning ability and sub-component factors of achievement value, mastery goal orientation, behavioral control, academic time-management revealed to have a partial mediation effect in the relationship between parents' neglect and children's academic achievement. Second, the sense of community also showed to have a partial mediation effect on the relationship between parents' neglect and children's academic achievement. The findings of this study provide a viewpoint to deeply observe the problem of parents' neglect in connection with children's self-regulated learning ability and sense of community, and can be used as practical data to develop various programs for the benefit of improving children's academic achievement.

• Communications of Mathematical Education
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• v.29 no.2
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• pp.215-239
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• 2015

A goal of this study is figuring out how fraction learning centered on various representation activities influences the fraction comprehension and mathematical attitudes. The study focused on 33 4th-grade students of B elementary school in Seoul. In the study, 15 fraction learning classes comprising enactive, iconic, and symbolic representations took place over 6 weeks. After the classes, the ratio of the students who achieved relational understanding increased and the students averagely recorded 90 pt or more on the fraction comprehension test I, II and III. Two-dependent samples t-test was conducted to analyze a significant difference in mathematical attitudes between pre-test and post-test. On the test result, there was the meaningful difference with 0.01 level of significance. To conclude, the fraction learning centered on various representation activities improves students' relational understanding and fraction understanding. In addition, the fraction learning centered on various representation activities gives positive influences on mathematical attitudes since it increases learning orientation, self-control, interests, value cognition, and self-confidence of the students and decreases fears of the students.

• Journal of the Korean Home Economics Association
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• v.24 no.3
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• pp.31-42
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• 1986

It is generallybelieved that the values of female students are different depending on the cultural enviromment of society. The purpose of this paper is to discern the value orientation of female students in Korea and America, and how they are related to the clothing behavior. 300 female students were selected as sample from the Univ. of Minnesota and 158 students filled out the questionnair. 420 female students were selected from five unversities in Jinju, Taegy and Pusan. RESULTS : 1) Korean students had highly evaluated theaethetic, political, religious and social values, and American students had higher evaluation on the economic and American students had higher evaluation on the economic and theoretical values. 2) Korean students tended to regard modesty, conformity and management as important factors when they chose new clothes, and for American students, appearance and tool were important. 3) The impact of values on clothing vehavior was as follows. a) Korean students who emphasized theoretical values did not use clothes as an instrument of status symbol and modesty. b) American students who emphasized the economic values tended to have an interest in purchase and wearing of clothes on purpose. c) Korean students who had positive attitudes on the aethetic values tended to be conservative, but they wanted to use the clothes as a demonstration of self exaggeraton. d) Korean students who regarded social values important tended to have a higher interest in the management of clothes. e) Korean students who had highly evaluated the religious values tended to be conservative when the selected new clothes. American students did not want to conform to the group norm when they chose new clothes. On the whole, American students did not put on clothes to achieve a specific goal. In short, it can be concluded that Korean students and American students have different values and they have a great impact on their clothing behavior.

• KIEAE Journal
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• v.14 no.3
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• pp.5-13
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• 2014

This paper introduces emergy(spelled with "m") that is a new environmental indicator in architecture, aiming to clarify conflicting claims of building design components in the process of energy-retrofit. Much of design practitioners' attention on low energy use in operational phases, may simply shift the lowered environmental impact within the building boundary to large consumption of energy in another area. Specifically, building energy reduction strategies without a holistic view starting from natural formation, may lead to the depletion of non-renewable geobiological sources (e.g. minerals, fossil fuels, etc.), which leaves a building with an isolated energy-efficient object. Therefore, to overcome the narrow outlook, this research discusses the total ecological impact of a building which embraces all process energy as well as environmental cost represented by emergy. A case study has been conducted to explore emergy-driven design work. In comparison with operational energy-driven scenarios, the results elucidate how energy and emergy-oriented decision-making bring about different design results, and quantify building components' emergy contribution in the end. An average-size ($101.9m^2$) single family house located in South Korea was sampled as a benchmark case, and the analysis of energy and material use was conducted for establishment of the baseline. Adoption of the small building is effective for the goal of study since this research intends to measure environmental impact according to variation of passive design elements (windows size, building orientation, wall materials) with new metric (emergy) regardless of mechanical systems. Performance simulations of operational energy were developed and analyzed separately from the calculation of emergy magnitudes in building construction, and then the total emergy demand of each proposed design was evaluated. Emergy synthesis results verify that the least operational energy scenario requires greater investment in indirect energy in construction, which clearly reveals that efficiency gains are likely to be overwhelmed by increment of material flows. This result places importance on consideration of indirect energy use underscoring necessity of emergy evaluation towards the environment-friendly building in broader sense.