• The Journal of the Korea Contents Association
• /
• v.16 no.10
• /
• pp.1-17
• /
• 2016

Recently, although many government agencies, including the Korea Tourism Organization, have been operating two-way interactive online idea proposal communities in order to reflect the various ideas of citizens in business, the utilization rate is still extremely low due to the lack of public's understandings and management's commitments. Therefore, based on previous studies on the characteristics of information quality, this research (1) derives key factors constituting idea quality in the context of online idea proposal communities, (2) classifies them into the content cues (value-added, relevancy, originality, and completeness) and the non-content cue (amount of writing) according to the heuristic-systematic model, and (3) finally validates how these content/non-content cues influence the knowledge adoption of administrators in an online idea proposal community. The findings of the structural equation modeling analysis with all of the 240 completed idea proposals in the 'Tourism Idea Bank' of Korea Tourism Organization reveal that, among content cues, value-added, relevancy, and originality have a significant effect on knowledge adoption. Moreover, it is also found that amount of writing as a non-content cue has a positive moderation effect on the relationships between originality and knowledge adoption.

• Journal of The Korean Association of Information Education
• /
• v.21 no.2
• /
• pp.247-257
• /
• 2017

The aims of this study are to analyse how smartphone affects (1)self-control and (2)self-directed learning ability of middle-school students, and also affect (3)self-directed learning ability by mediation of self-control. For these aims, this study used Seoul Educational Longitudinal Study panel data which was conducted in 2015, and conducted multi-group comparisons using structural equation modeling analyses. In analysis of smartphone effects, the use of smartphone of students was divided into 'for entertainment' and 'for learning', and also their first time of smartphone use was considered(elementary vs. middle school). Results indicated that while 'smarphone use for entertainment' was related negatively with self-control and self-directed learning ability of students, 'smarphone use for learning' was related positively, regardless of when smartphone was first used. Also, while 'smarphone use for entertainment' was related negatively with self-directed learning ability by mediation of self-control, 'smarphone use for learning' was related positively.

• The Journal of the Korea Contents Association
• /
• v.19 no.10
• /
• pp.649-659
• /
• 2019

This study analyzed the effects of school violence, parental violence, and academic stress on the middle school students suicidal ideation through depression and withdrawn. For this study, we used data from the 13th wave the Korea Welfare Panel Study(KOWEPS). The analysis was conducted on 391 middle school students. Structural equation modeling by using AMOS was used for this study. As results of the study, the biggest effect on the suicidal ideation was the total effect of school violence, and the direct effect was also significant. In other words, school violence is a partial mediating effect through depression and withdrawn on suicidal ideation. Parental violence was more indirect effect than direct effect through depression on suicidal ideation. In other words, parental violence is a complete mediating effect through depression on suicidal ideation. Academic stress was more indirect effect than direct effect through depression and withdrawn on suicidal ideation. In other words, academic stress is a complete mediating effect through depression on suicidal ideation. Withdrawn was not direct affect, but had an indirect effect through depression on suicidal ideation. Therefore, in order to prevent suicide of middle school students, there is a need for prevention of school violence, parental violence and academic stress, which are causes of depression.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.20 no.10
• /
• pp.1927-1934
• /
• 2016

In this paper, we proposed a I-gate n-MOSFET (n-type Metal Oxide Semiconductors Field Effect Transistor) structure in order to mitigate a radiation-induced leakage current path in an isolation oxide interface of a silicon-based standard n-MOSFET. The proposed I-gate n-MOSFET structure was designed by using a layout modification technology in the standard 0.18um CMOS (Complementary Metal Oxide Semiconductor) process, this structure supplements the structural drawbacks of conventional radiation-tolerant electronic device using layout modification technology such as an ELT (Enclosed Layout Transistor) and a DGA (Dummy Gate-Assisted) n-MOSFET. Thus, in comparison with the conventional structures, it can ensure expandability of a circuit design in a semiconductor-chip fabrication. Also for verification of a radiation-tolerant characteristic, we carried out M&S (Modeling and Simulation) using TCAD 3D (Technology Computer Aided Design 3-dimension) tool. As a results, we had confirmed the radiation-tolerant characteristic of the I-gate n-MOSFET structure.

• International Area Studies Review
• /
• v.22 no.4
• /
• pp.123-143
• /
• 2018

Many studies on the acceptance of multi-national products have made academic contributions by offering various implications. However, there have been relatively few studies on the attitudes and behaviors of multi-national products depending on the purchasing tendency of consumers. The purpose of this study is to investigate how acceptance process of multi-national product, which is high involvement, appears by sorting consumers' purchasing tendency into rational consumption tendency, brand pursuit tendency, and consciousness of other people. Also, in order to supplement the measurement method of existing research, this study sought to analyze the acceptance behavior of consumers more precisely by classifying the situation before and after exposures of multi-national origin information on products. For this, 266 consumers were surveyed and statistical analysis was conducted through structural equation modeling. As a result of the research model, it was found that consciousness of other people has a significant effect on susceptibility and antipathy of multi-national product. In addition, antipathy against multi-national products has more powerful effect than susceptibility.

• Journal of the Korean Recycled Construction Resources Institute
• /
• v.6 no.4
• /
• pp.349-356
• /
• 2018

In this study, material properties of steel fiber reinforced high strength concrete (FRHSC) with the compressive strength of about 120MPa were modeled. Steel fiber content of 1.0%, 1.5%, and 2.0% was considered as experimental variable. First of all, compressive strength tests were carried out to determine compressive characteristics of concrete, and compressive stress-strain curves were modeled. For conventional concrete with moderate compressive strength, the stress-strain curves are in the form of parabolic curves, but in the case of high strength concrete reinforced with steel fiber, the curves increase linearly in the form of the straight line. In addition, to understand the tensile properties of FRHSC, the crack mouth opening displacement (CMOD) test was performed, and the tensile stress-CMOD curve was calculated through inverse analysis. When the steel fiber content increased from 1.0% to 1.5%, there was a significant difference of tensile strength. However, when the amount of steel fiber was increased from 1.5% to 2.0%, there was no significant difference of tensile strength, which might result from the poor dispersion and arrangement of steel fiber in concrete.

• Journal of Korean Society of Steel Construction
• /
• v.27 no.6
• /
• pp.493-501
• /
• 2015

Superelastic shape memory alloys (SMAs) are metallic materials that can automatically recover to their original condition without heat treatment only after the removal of the applied load. These smart materials have been wildly applied instead of steel materials to the place where large deformation is likely to concentrate. In spite of many advantages, superelastic SMA materials have been limited to use in the construction filed because there is lack of effort and research involved with the development of the material model, which is required to reproduce the behavior of superelastic SMA materials. Therefore, constitutive material models as well as algorithm codes are mainly treated in this study for the purpose of simulating their hysteretic behavior through numerical analyses. The simulated curves are compared and calibrated to the experimental test results with an aim to verify the adequacy of material modeling. Furthermore, structural analyses incorporating the material property of the superelastic SMAs are conducted on simple and cantilever beam models. It can be shown that constitutive material models presented herein are adequate to reliably predict the behavior of superelastic SMA materials under cyclic loadings.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.16 no.1
• /
• pp.117-130
• /
• 2017

Bicycles are leading to serious accidents in the event of a side collision, and it is very important to prevent accidents in advance because it is difficult to actively deal with them in a dangerous situation. As a part of the bicycle safety driving support technology, this study establishes bicycle accidents dangerous zone based on bicycle accident data and road property information of digital map nationwide and provides timely safety information to cyclists. The point selected by using actual accident data was called 'dangerous zone', and the potential accident occurrence point generated by modeling based on this 'dangerous zone' was called 'logical dangerous zone'. As a result of the research on the Designation of Logical Bicycle Accident Dangerous Zone, the regional specificity of the bicycle accident points across the nation was generalized to the form of the logical dangerous zone through the network data.

• Journal of Korean Home Economics Education Association
• /
• v.26 no.3
• /
• pp.53-67
• /
• 2014

The purpose of this study was to examine the mediating effects of self-esteem on the relationship between adolescents' family environment(parent's child-rearing attitude, family cohesion), peer environment(quality of peer relationship, peer bullying) and career maturity. The subject of this study were students of third grade of middle school who reside in Seoul. 425 self reported questionnaires were used for final analysis. Findings of this study indicated that family environment of adolescents directly affected peer environment. Family environment and peer environment of adolescents directly affected self-esteem. Self-esteem was more highly affected by peer environment than family environment. Adolescents' self-esteem directly affected career maturity. The structural equation modeling showed that self-esteem mediated the relationship between family environment, peer environment and career maturity.

• 한국노년학
• /
• v.29 no.2
• /
• pp.579-591
• /
• 2009

The purpose of this study is what are the factors affecting decision making for selection of social welfare facility, esp., elderly care facility. The resident's selection for social welfare facility are relatively new terms in the Korean social work. To explore the factors, we employed an empirical study. The collected data was analyzed by using SEM(Structural equation modeling). As the results, the standardized regression coefficient of the hypothesis that the service quality will affect the service satisfaction is equal to 0.555(t=6.723, p<0.01) and the coefficient that the service satisfaction will affect the decision making is equal to 0.766. The absolute fitness of the SEM model shows χ² = 580.151(d.f.=317, p-value=0.000) and RMSEA=0.063, so that the model is absolutely fit. Since CFI=0.915, the model is comparatively fit. Conclusively speaking, the hypothesis that service quality affects to service satisfaction was supported. The hypothesis that service satisfaction affects to decision making was also supported. By accounting for the results of the analysis, this study verified the service quality leading to service satisfaction is an important factor for resident to select a residential facility.