• Korean Journal of Construction Engineering and Management
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• v.18 no.4
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• pp.57-66
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• 2017

Using bidding data collected from the World Bank's open database, this research performed a series of competitive analyses of the major countries that have participated in the Bank's engineering consulting services contracts in Vietnam. The goal of the analysis was to evaluate the performance of Korean engineering firms to date, and provide strategic recommendations for future projects. Results showed that Korean firms had a high bid acceptance rate, comparable to major developed countries. The success was attributed to the high technical scores in the selection process. Comparatively, financial scores were not competitive and inferior to developing countries such as China and India. Results of a 'Skitmore' analysis revealed that Korea was competitive in medium size projects and were situated between developed and developing countries. Korea thus needs to increase participation in basic and detailed design services, 2) improve labor costs through 'localization' and latest technologies, and 3) and venture into larger sized projects.

• Journal of the Ergonomics Society of Korea
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• v.35 no.1
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• pp.11-27
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• 2016

Objective: The purpose of this study was to develop and evaluate high technology adaptive driving controls, such as mini steering wheel-lever system and joystick system, for the people with physical disabilities in the driving simulator. Background: The drivers with severe physical disabilities have problems in operation of the motor vehicle because of reduced muscle strength and limited range of motion. Therefore, if the remote control system with driver-by-wire technology is used for adaptive driving controls for people with physical limitations, the disabled people can improve their quality of life by driving a motor vehicle. Method: We developed the remotely controlled driving simulator with drive-by-wire technology, e.g., mini steering wheel-lever system and joystick system, in order to evaluate driving performance in a safe environment for people with severe physical disabilities. STISim Drive 3 software was used for driving test and the customized Labview program was used in order to control the servomotors and the adaptive driving devices. Thirty subjects participated in the study to evaluate driving performance associated with three different driving controls: conventional driving control, mini steering wheel-lever controls and joystick controls. We analyzed the driving performance in three different courses: straight lane course for acceleration and braking performance, a curved course for steering performance, and intersections for coupled performance. Results: The mini steering wheel-lever system and joystick system developed in this study showed no significant statistical difference (p>0.05) compared to the conventional driving system in the acceleration performance (specified speed travel time, average speed when passing on the right), steering performance (lane departure at the slow curved road, high-speed curved road and the intersection), and braking performance (brake reaction time). However, conventional driving system showed significant statistical difference (p<0.05) compared to the mini steering wheel-lever system or joystick system in the heading angle of the vehicle at the completion point of intersection and the passing speed of the vehicle at left turning. Characteristics of the subjects were found to give a significant effect (p<0.05) on the driving performance, except for the braking reaction time (p>0.05). The subjects with physical disabilities showed a tendency of relatively slow acceleration (p<0.05) at the straight lane course and intersection. The steering performance and braking performance were confirmed that there was no statistically significant difference (p>0.05) according to the characteristics of the subjects. Conclusion: The driving performance with mini steering wheel-lever system and joystick control system showed no significant statistical difference compared to conventional system in the driving simulator. Application: This study can be used to design primary controls with driver-by-wire technology for adaptive vehicle and to improve their community mobility for people with severe physical disabilities.

• Journal of Digital Convergence
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• v.16 no.4
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• pp.167-173
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• 2018

The aim of the study is to examine the effects of the peer relationship promotion convergence program on self-esteem and sociality of children using a community child center. A nonequivalent control group pre-post design was used. Participants were 52 children (experimental group=26, control group=26), 4-6th grade in elementary school from 5 rural community child center. The experimental group participated in 12 sessions of the program for 50 min, once a week. The data were analyzed with descriptive statistics, a chi-square test, and an independent t-test using SPSS WIN 21.0 program. After completion of the program, the experimental group showed a significant improvement in self-esteem(t=2.43, p=.018) and sociality (t=2.03, p=.047) compared to the control group. The result shows that the program is beneficial for improving self-esteem and sociality of low-income, school-age children. Therefore, the program is recommended the intervention for improvement of self-concept and sociality of children.

• Journal of Digital Convergence
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• v.16 no.6
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• pp.233-240
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• 2018

The study aimed to evaluate the effects of the EMDR-IGPT(Eye movement desensitization and reprocessing-integrative group treatment protocol) on the depression, anxiety, post traumatic stress, self-esteem in graduate nursing students. A quasi-experimental study employing a nonequivalent control group and pre-post design was conducted. The participants were graduate nursing students from C university (Experimental group=22, Control group=28). The experimental group participated in the 8 session-EMDR-IGPT for 8 weeks, while control group were treated by waitlist. Data were analyzed using ${\chi}^2-test$, independent t-test, with SPSS 24.0 program. There were significant differences in anxiety(t=-2.50, p<.05) and self-esteem(t=20.78, p<.01) of participants between experimental group and control group after completion of 8 session-EMDR-IGPT. The results indicate that EMDR-IGPT can be used to improve anxiety and self-esteem of graduate nursing students. Furthermore, further study needs to identify the mechanism of the effects of the program.

• Journal of the Korean Chemical Society
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• v.62 no.1
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• pp.52-63
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• 2018

The purpose of this study was to observe and analyze how pre-service secondary chemistry teachers conduct open-ended, free style, exploratory chemistry experiments. The study examined common difficulties and tendencies that teachers showed in the chemistry labs. The study also investigated how these teachers deal with their difficulties and obstacles, such as unexpected results and device errors. Next, the study explored how students' epistemic goals and considerations have been shaped and changed as they interacted with one another and participated in their experiments over time. The study suggests that it could be more effective to gradually decrease guided-features of the experiment by providing appropriate scaffolding, than to start with completely open-ended inquiry labs. The study also suggests that the establishment of epistemic agency among group members influences the way they conduct experiments. Consequently, it is necessary to consider how instructional design for open-ended inquiry labs may provide students with scaffolds to encourage their active participation and to build responsibility in group discussions.

• Journal of The Korean Association of Information Education
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• v.20 no.4
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• pp.341-356
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• 2016

The purpose of this study is to investigate the effects of academic emotion regulation and group cohesiveness on learning satisfaction and learning interest in the flipped learning at the university. In order to examine the purpose, this study applied a problem-solving classroom model to the flipped learning. 33 university students participated in the flipped learning activities for 9 weeks, and the data from them were used for multiple regression analysis. The results indicated that learners' academic emotion regulation did not affect learning satisfaction, and subjects' group cohesiveness influenced on learning satisfaction. Second, learners' academic emotion regulation did not affect learning interest, but their group cohesiveness had an impact on learning interest. This research has several implications with regard to suggesting the guidelines and conditions for the design and implementation of the flipped classroom at the university.

• Journal of the Korea Convergence Society
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• v.11 no.7
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• pp.41-49
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• 2020

This study is a descriptive research study for the elderly who participated in the community's fair to identify the factors of the convergent impact of perceived health conditions, health promotion activities and dementia anxiety on the quality of health-related life. The research subjects were surveyed on 435 senior citizens aged 65 or older among the participants in the 2019 Regional Exposition, and analyzed using statistics, ANOVA, Pearson's correlation and multiple regression analysis using the SPSS 21.0 program. According to the study, the quality of life related to health affects 53.0% of the convergence factors such as perceived health conditions, health promotion activities, monthly income, and economic conditions. Therefore, various community events or programs that can lead to the reduction of dementia anxiety and the improvement of health promotion activities will have to be developed to motivate or make promotional efforts for senior citizens to participate in community events or programs, which will enable senior citizens to build social networks through the participation of various programs in the community, thereby improving health promotion activities and reducing dementia anxiety, which will improve the quality of life for senior citizens.

• Journal of the Korean earth science society
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• v.34 no.2
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• pp.162-172
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• 2013

The purpose of this study is to investigate the effects of flash panorama-based virtual field trips (VFT) as a supporting tool for geological field activity on middle school students' spatial visualization ability, conceptual understanding, and perceptions. A total of 17 middle school students participated in a three day long actual geological field trip around Jeju Island where a three-phase instructional model is applied for utilization of flash panorama-based VFT, which was proposed by Kim and Lee (2011). With one-group pretest-posttest pre-experimental design, data were collected using questionnaire and were analyzed to find out a change in students' spatial visualization ability and volcanic concept understanding, and their perceptions about the utilization of flash panorama-based VFT. Findings are as follows: First, the effect of utilizing flash panorama-based VFT in actual field trip revealed that there was meaningful increase in 'spatial relation' category of spatial visualization ability and 'knowledge' and 'comprehension' domains of volcanic concept understanding. Second, majority of students showed positive gain index in both spatial visualization ability and volcanic concept understanding. Lastly, participating students showed much interest and high satisfaction, and positive perception on the use of VFT. They also perceived that the utilization of flash panorama-based VFT could help in carrying out an actual field trip in terms of cognitive and geographical factors.

• Journal of The Korean Association For Science Education
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• v.38 no.4
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• pp.587-598
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• 2018

In this study, we investigated the characteristics of pre-service science teachers' curriculum design for lessons using self-generated analogy. Three pre-service science teachers at a college of education in Seoul participated in this study. After a workshop on lessons using self-generated analogy, they planned and demonstrated lessons. All of the teaching-learning materials were collected, and their lessons were observed and videotaped. Semi-structured interviews were also conducted before and after their lessons. The characteristics of lessons using self-generated analogy were analyzed in the perspectives of PCK. The analyses of the results revealed that they used various strategies to promote students' generating analogies. They lacked understanding of the stages of the lessons and the role of teachers. Although all of them considered assessment, they used limited assessment methods and assessment dimensions. Some actively considered students' misconceptions, and specifically anticipated analogies that students could generate. They determined topics for lessons considering various aspects such as the level of self-generated analogy and the characteristics of scientific conceptions. On the bases of the results, we suggest some educational implications for pre-service science teacher education.

• Child Health Nursing Research
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• v.19 no.3
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• pp.198-206
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• 2013

Purpose: This study was done to identify the effectiveness of the 'intervention - mother's recorded song' on low-birth weight infants in an neonatal intensive care unit (NICU). Methods: This study was conducted with a nonequivalent control group pre-posttest quasi-experimental design and the participant group was low-birth weight infants who were admitted to the NICU. Forty-eight infants, 24 in each from two groups, the experimental and control group, participated in the study. Results: For physical response according to vital signs, there were no significant statistical differences in heart rate, respiration rate and pulse oximetry saturation between the experimental group and the control group. For behavioral state, there was a significant statistical difference between the experimental and control group. Conclusion: The study results indicate that the intervention using mother's song had some significance as a nursing intervention with positive impacts. Such an intervention can help pediatric nurses improve infants' stabilization of their vital signs and behavioral states. By showing the effectiveness of such an intervention, the results of this study provide further evidence-based information in developing the practice of pediatric nursing.