• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.2
• /
• pp.404-414
• /
• 2020

This study aims to explore latent classes in terms of changing patterns in achievement motivation among the samples from elementary school to middle school students in multicultural families and to investigate factors to predict latent groups and their relationship with academic achievement. 1254 pairs of mother and child from the 1st to 6th years of Multicultural Adolescents Panel Study (MAPS) was utilized for the Latent Class Growth Analysis (LCGA), One-way ANOVA, Multinomial Logistic Regression. The results showed that there were four distinct subgroups within the samples in terms of achievement goal orientations (i.e. very-high changing group, average changing group, low stable group, very-low stable group) at all six time points, and students who reported high achievement motivation were likely to have higher academic achievement. Four groups were extracted based on parent's efficacy, students' self-esteem, and teacher's support. Suggestions and practical implications for understanding the types of subgroups for the achievement motivation of multicultural families were discussed.

• The Journal of the Korea Contents Association
• /
• v.17 no.9
• /
• pp.235-254
• /
• 2017

The purpose of this study was to develop a nursing management case simulation (NMCS) framework based on the five components of nursing management process and to apply it to clinical nursing practice of nursing college students. The subjects of this study were NMCS reports submitted by the 4th grade 105 nursing students of an university. The research tool is a simulation framework for nursing management practice. It reflects the brainstorming and debriefing process used in the previous simulation exercise based on the five elements of planning, organization, human resource management, directing and control of the nursing management process respectively. As a result of the study, 32 nursing management cases were found to have 79.6% correct rate, 11.6% concept error rate, and 5.6% classification error rate in the first brainstorming and debriefing process for the five components of nursing management process. On the other hand, in the second brainstorming and debriefing process, 94.6% correct rate, 0.0% concept error rate, and 4.4% classification error rate. Based on these results, the NMCS framework developed in this study can be applied to the nursing management theory and practice course of nursing college students as well as simulation based job training and maintenance educations for clinical nurses. Therefore, we propose follow-up studies in various clinical nursing settings and a longitudinal cohort study to investigate the effect of nursing management job skills of nursing college students after graduation.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.21 no.5
• /
• pp.717-733
• /
• 2019

In this study, lining thickness distribution and its behind state (particularly, its void state) were analyzed using the GPR survey data performed on three currently operating NATM tunnels. Results of GPR analysis showed that void areas were mostly detected between concrete lining and primary support, particularly, near the crown of the tunnels. The lining thickness in the left-hand side of the tunnel was different from that of the right-hand side by 8.6~253.5 mm when measured in transverse direction. It was also found that longitudinal cracks were prevailed in the area lining thickness was sharply changed. Longitudinal thickness distribution at the crown was also studied and tested by performing 3 goodness-of-fit tests in order to find the most suitable thickness distribution. Normal distribution (or similar distribution) fit most suitably to the measured data if the measured average thickness was larger than designed one; Gamma and/or Inverse Gauss distribution fit to the measured data reasonably well if the measured average thickness was less than the designed value of thickness. Since actual lining thickness can be a potential index when assessing the state and safety of the unreinforced NATM tunnel lining, measuring of the lining thickness with GPR survey might be needed rather than assuming the thickness is always constant and same with the designed value.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.21 no.6
• /
• pp.779-793
• /
• 2019

The ventilation rate (Qreq) requirement in road tunnels is not just a basic information for determining the tunnel cross-sectional area, but also a major factor for the ventilation system selection. The Qreq is predominantly dependent on the vehicle traffic volume, while among others, the vehicle exhaust emissions and permissible standards are critical. This paper analyzes the changes in the Qreq designing criteria and/or recommendations suggested by World Road Association and local authorities over the last 20 years, since the first local designing criteria was established in 1997 by Korea Expressway Corporation. Additionally, based on the updated vehicle emission standards of Ministry of Environment and recent recommendations of the World Road Association (WRA), changes in the Qreq and its effects are studied in terms of the length and grade of the tunnel.

• Korean Journal of Remote Sensing
• /
• v.27 no.4
• /
• pp.411-420
• /
• 2011

In this study, a digital elevation model (DEM) in tidal flat of Suncheon Bay, one of the most ecological preserved area in the world, was generated from digital aerial stereo-images. The focal lengths for the aerial stereo-images were adjusted using ground control points (GCPs) in order to improve the accuracy of camera parameters. We proposed matching sizes suitable for generating DEM in tidal flat and a method for eliminating excessive position errors using intersection-distance($P_R$) threshold value. The accuracies of the DEM generated from the proposed method as well as the commercial S/W were compared with the elevation profiles measured by Total Station in the filed. As the results, the DEM generated by the proposed method showed better result (maximum deviation is a -21 centimeters) with detailed topography than DEM by the commercial S/W in the region. These results suggest that the DEM of tidal flat, which hardly obtained with the traditional methods, can be generated from digital aerial images by applying the proposed method in this study. We believe that the generated DEM in tidal flat can be an essential data for monitoring the sediment erosion and deposit of the tidal flat.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.27 no.3
• /
• pp.357-365
• /
• 2009

RTLS(Real-Time location system) for Location tracking of personnel and equipment of a construction site is now in development, among these techniques the wireless LAN-based techniques are being considered. To introduce these techniques to the construction site, the 3-dimensional visibility analysis prior to the installation location of AP must be simulated. At this time, three-dimensional visibility analysis considering the propagation distance of RTLS signal of AP(Access Point) should be performed. In this research, two processing methods LOS boundary are tested to various grid size of gridded terrestrial LiDAR data, and the results were compared. In evaluations of visible area, the Scanline Fill-Method shows approximately 7.4% more visible area than the Shadow Clipping-Method, but the Shadow Clipping-Method shows stable results for the grid size. About the processing time, the Scanline Fill-Method is about 2 times faster compared to the Shadow Clipping-Method.

• 재활복지
• /
• v.18 no.4
• /
• pp.145-164
• /
• 2014

The purpose of the study is to examine the relationships of parents' satisfaction towards their children's school education and the demographic variables associated with decision-making on post high school academic completion of parents of the students with disabilities. The Korean Education Longitudinal Study data, which contained the responses of 162 parents of high school students with mild disabilities who enrolled in regular high schools, was used for the study. For data analysis, descriptive statistics, ordinal logistic regression analysis, and chi-square test were used. As a result, provision of college entrance related information/consultation, improvement of academic performance level, collaboration/ communication between the teachers and parents, and overall school education were significantly related to parents' decision-making on their children's post high school academic completion. Also, mothers' educational level showed significant difference in parents' decision-making on their children's post high school academic completion.

• Korean Journal of Social Welfare Studies
• /
• v.41 no.3
• /
• pp.327-348
• /
• 2010

This study aims to understand whether the effect of poverty is translated to adolescents' mental health though their exposure to violence, which is aggravated by the dangerous environments of the neighborhoods. For this purpose, the study analyzes whether poor adolescents tend to reside on neighborhoods with toxic environments, and whether living in the disadvantageous neighborhood causes the poor adolescents to experience greater violence victimization and fear of violence, and eventually, greater depression and anxiety. The study utilizes secondary analysis of longitudinal data of the Korea Youth Panel Survey. Structural Equation Modeling is used as an analysis method. The study results reveals that poverty has both direct and indirect effects on the level of adolescents' symptoms of depression and anxiety. Especially, poverty affects adolescents' depression and anxiety indirectly through increasing the possibility to reside in more dangerous neighborhoods. Explaining more in detail, living in dangerous neighborhoods seems to expose adolescents more to violence and fear of violence in the neighborhoods and this experience increases the level of depression and anxiety. The study argues that the negative effects of poverty on adolescents should be examined from the view of neighborhood environments. Finally, the study discusses the importance of increasing neighborhood competency as practice and policy implication.

• Journal of Technology Innovation
• /
• v.25 no.2
• /
• pp.89-125
• /
• 2017

Complex product systems (CoPs) is a engineering-intensive products with high-ended design technology, which are closely linked with national economic growth and development of social infrastructures. Accordingly, in order to understand the technological evolution of CoPs, it is necessary to identify the macro-environmental drivers surrounding the CoPs and their impact on the technological evolution of the CoPS. Therefore, we investigate the effect of policy, economic and social drivers on the technological evolution of CoPS by implementing the longitudinal case study on nuclear power plant during the periods between 1950 and 2010s. Based on the analysis of various sources of secondary data and primary data through interviews, we found that the technological evolution of nuclear power plant is progressed as "Phase 1: Application research for peaceful utilization of nuclear energy" between 1950s and 1960s, "Phase 2: The first renaissance of nuclear energy" during 1970s, "Phase 3: Enhancement of safety and the catch-up of latecomers in nuclear energy" between 1990s and 2000s, and "Phase 4: Top prioritization of safety and the development of next generation reactors for the second renaissance of nuclear energy" since 2010s. We also found that various kinds of policy, economic and social drivers, such as energy policy, investment in technology development, economic growth and energy demand, social acceptability and environmental concern, have affected the technology evolution of nuclear power plant at each phase. We emphasize the role of macroenvironmental drivers in the technological evolution of CoPS. We also suggest that countries that endeavor to develop CoPs need to utilize those drivers for enhancing competitiveness and sustaining leadership.

• Journal of the Daesoon Academy of Sciences
• /
• v.43
• /
• pp.103-137
• /
• 2022

In religious symbology, an emblem is a symbolic mark, which differentiates a religion from other groups. In addition, it holds a symbolic or conceptual character that enables viewers to recognize a certain religion. Daesoon Jinrihoe, a representative order among Korean religious traditions, also has a symbolic mark; however, it has not been designated with an official name as symbol despite its usage dating back to May 11, 1978. At the time, that mark has served as an emblem. Afterwards, the emblem was printed and has been officially used as a flag (unofficially known as the Dao Flag, the Fellowship Flag, etc.) since October 20th of that same year. The emblem of Daesoon Jinrihoe which is not only printed in the flag but has been utilized as a symbolic mark representing the order. Nevertheless, it is hard to find research related to this symbol. Consequently, this study aims to apprehend the existing materials about the flag's emblem and its meaning, as well as attempt to interpret its various implications. Indeed, this work will suggest another point of view about the emblem given that it embraces ambiguity. This research suggests that the emblem symbolically depicts the Daesoon (Great Itineration), Samwon (三圓, Three Circles), Sadae (四大, Four Dae), and the Center, and that, all together, this can imply more profound meanings than were expressed in previously posited explanations. As such, this study draws further significance from Daesoon Thought and find: first, the circle in the center of the emblem signifies the pivot of Daesoon; not just the earthly circle (地圓) or the human circle (人圓). This opens up the possibility that the circle symbolizes Mugeuk (Limitlessness) and Taegeuk (Great Ultimate), which include the pivot of Heaven, Earth, and Humanity. Secondly, the symbol of soil (土) in the center is separated from the human circle and reveals the symbol of harmony and creation as the rod shape of Four Dae. Thirdly, the protuberances in the circle point to specific directions and this allows for additional layers of meaning.