• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.3
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• pp.298-306
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• 2014

The railway signalling system for safe train operation regulates the train speed to ensure the safety distance between consecutive trains by using wayside facilities such as track circuits and interlocking systems. In addition, this signalling system controls the trackside equipment such as a railway point along the train line. This ground-equipment-based train control systems require high CAPEX and OPEX. To deal with these problems, the train control system using the on-board controller has been recently proposed and its related technologies have been widely studied. The on-board-controller-based train control system is that the on-board controller can directly control the trackside equipment on the train line. In addition, if this system is used, the wayside facilities can be simplified, and as a result, the efficient and cost-effective train control system can be realized. To this end, we have developed the prototypes of the on-board controller and wayside object control units which control the point and crossing gate and performed the integrated operation simulation in a testbed. In this paper, before the field test of the on-board-controller-based train control system, we perform the preliminary field trial including the installation test, wireless access test, interface test with other on-board devices, and normal operation test.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.579-588
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• 2012

Inclusion of hearing impaired students in general schools is the current tendency in deaf education today. The goal of inclusion is to promote the academic and social inclusion of hearing impaired students, where academic inclusion focuses on higher academic achievement and class participation level. However, some studies have shown that hearing impaired students attending general schools mostly experience feelings of isolation, rejection and loneliness, and encounter identity development problems. This study reviews the research on the inclusion of hearing impaired students in general schools, as well as the perceptions of their parents, teachers on their academic and social inclusion. A further aim of this study is to explore the supporting services, teachers's attitude, career guidance service and effective collaborative partnership among teachers for hearing impaired students. This study concludes with suggesting the community of knowledge as integrative supporting strategy for inclusion.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.61-65
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• 2019

This study analyzed the post-training satisfaction level and changes in their thinking of 202 maladjusted soldiers who participated in Green Camp from 2017 to 2018 through survey, and the operational status of Green Camp to 350 military officials. In addition, general matters of military official, matters concerning soldiers entering the Green Camp, matters concerning the use of the Green Camp, and matters related to the consultation of soldiers in their relevant units were analyzed through technical statistics. On March 17, 2019, the Department of Defense identified 6,118 98.4% of the 6,214 maladjusted soldiers with active duty failed to complete military service and discharged, among them, 66% or 4,014 reportedly experienced maladjustment. Therefore, it is necessary to earlier identify soldiers who are discharged due to maladjustment, to apply various methods such as education and career guide by civil expert, to conduct timely education through civil professional hospital so that they can complete their military service normally.

• Journal of Gifted/Talented Education
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• v.13 no.4
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• pp.65-94
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• 2003

The purpose of this study is to acquire the information on the current situation of students' selection process in order to renovate the system of picking up the students. As a first step of the study, we examined the validity of the factors of the single-out system such as qualification and the process for the application and the standards and proceeding of the selection. Then we analysed the result of the entrance examination of Hansung Science Highschool in 2002. The analysis was on the correlation between the result of entrance examination and the achievement in the school and the decision of the course after graduation. To know on the achievement of the students, we investigated the records of regular tests and asked the teachers' opinion in math and science classes. As a result, we gained the following points: First, the present single-out system has a danger of excluding students who are much talented in science and math field because it is based on students' achievements in middle schools; Second, the new selection system should consider the character and attitude of the applicants in addition to their knowledge; Third, the continuous observation of the teacher in middle school should be an important factor of the picking up system; Fourth, more questions requiring divergent thinking ability and inquiry skill should be developed as selective examination question. Also examination questions should cover the various contents from mathematics to science, and do not affect pre-learning; Finally, the system of present letting all students stand in one line should be changed into that of letting students in various lines. We can consider using multi-step selection system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.593-603
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• 2020

This study identified the relationship between academic stress and hopelessness among female high school students. The self-administered questionnaires were given to 334 female high school students located in D-city during the period from August 20, 2018 to September 20, 2018. As a result, the distribution of the level of hopelessness among those surveyed was 61.6% for the normal range group, 23.1% for the mild range group, 12.9% for the moderate range group, and 2.4% for the severe range group. The level of hopelessness, according to the academic stress of the study subjects, was significantly higher in the higher academic stress group than that in the lower academic stress group (p=0.000). Hopelessness also showed significant positive correlation with academic stress (r=0.371, p<0.01). The results of the logistic regression analysis showed that the risk ratio of hopelessness was significantly increased 9.27 times in the higher academic stress group when compared to that in the lower academic stress group. According to the multiple regression analysis, the significant variables affecting hopelessness were satisfaction with school life, conversation with parents, eating regularly, stress due to tests, stress due to studies and stress about career paths. Given the above results, the hopelessness of female high school students is significantly related to academic stress. Therefore, it is necessary to develop and implement programs that can properly control academic stress factors.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.547-557
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• 2020

This study examined the level of depression according to the characteristics of school and family life of female high school students. In particular, this study attempted to identify the relationship between academic stress and the depression levels. The survey conducted a self-administered questionnaire from 438 students at D city in August, 2019. As a result, the distribution of the depression levels among the study subjects was 78.8 % for 「normal」 and 21.2 % for 「depression」, and the distribution of depression was significantly higher in groups with higher academic stress. The academic stress and depression levels showed significant positive correlations. In logistic regression analysis, the risk ratio of 「depression」was significantly higher in groups with higher academic stress than in groups with lower academic stress. According to multiple regression analysis, the factors affecting the level of depression were chosen as significant variables, such as academic achievement, relationship with school fellow, satisfaction with school life, test stress, study stress, and career stress. The above findings suggest that the level of depression in female high school students was related to academic stress and many other variables of school and family life characteristics.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.14 no.1
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• pp.139-149
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• 2019

The purpose of this study is to contribute to the minimization of the social cost due to the insolvency by improving the success rate of the startups by providing useful information to the founders and the start-up support institutions through analysis of non-financial information affecting the failure of the startups. This study is aimed at entrepreneurs. The entrepreneurs that are defined by the credit guarantee institutions generally refer to entrepreneurs within 5 years of establishment. The data used in the study are sampled from the companies that were supported by the start-up guarantee from January 2014 to December 2013 as the end of December 2017. The total number of sampled firms is 2,826, 2,267 companies (80.2%), and 559 non-performing companies (19.8%). The non-financial information of the entrepreneur was divided into the entrepreneur characteristics information, the entrepreneur characteristics information, the entrepreneur asset information and the entrepreneur 's credit information, and cross-tabulations and logistic regression analysis were conducted. As a result of cross-tabulations, univariate analysis showed that personal credit rating, presence in the industry, presence of residential housing, presence of employees, and presence of financial statements were selected as significant variables. As a result of the logistic regression analysis, three variables such as personal credit rating, occupation in the industry, and presence of residential house were found to be important factors affecting the failure of founding companies. This result shows the importance of entrepreneur 's personal credibility and experience and entrepreneur' s assets in business management. The start-up support institutions should reflect these results in the entrepreneur 's credit evaluation system, and the entrepreneurs need training on the importance of the personal credit and the management plan in the entrepreneurial education. The results of this analysis will contribute to the minimization of the incapacity of startups by providing useful non-financial information to founders and start-up support organizations.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.34 no.s02
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• pp.45-65
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• 1989

The Korean peninsular having the complexity of the photography and variability of climate is located within passing area of a lots of typhoon occurring from the southern islands of Philippines. So, there are various patterns of wind and flooding damages in paddy field occuring by the strong wind and the heavy rain concentrated during the summer season of rice growing period in Korea. The wind damages to rice plants in Korea were mainly caused by saline wind, dry wind and strong wind when typhoon occurred. The saline wind damage having symptom of white head or dried leaves occurred by 1.1 to 17.2 mg of salt per dry weight stuck on the plant which was located at 2. 5km away from seashore of southern coastal area during the period(from 27th to 29th, August, 1986) of typhoon &Vera& accompanying 62-96％ of relative humidity, more than 6 m per second of wind velocity and 22.5 to 26.4$^{\circ}C$ of air temperature without rain. Most of the typhoons accompanying 4.0 to 8. 5m per second of wind and low humidity (lesp an 60％) with high temperature in the east coastal area and southen area of Korea. were changed to dry and hot wind by the foehn phenomenon. The dry wind damages with the symptom of the white head or the discolored brownish grain occurred at the rice heading stage. The strong wind caused the severe damages such as the broken leaves, cut-leaves and dried leaves before heading stage, lodging and shattering of grain at ripening stage mechanically during typhoon. To reduce the wind damages to rice plant, cultivation of resistant varieties to wind damages such as Sangpoongbyeo and Cheongcheongbyeo and the escape of heading stage during period of typhoon by accelerating of heading within 15th, August are effective. Though the flood disasters to rice plant such as earring away of field, burying of field, submerging and lodging damage are getting low by the construction of dam for multiple purpose and river bank, they are occasionally occurred by the regional heavy rain and water filled out in bank around the river. Paddy field were submerged for 2 to 4 days when typhoon and heavy rain occurred about the end of August. At this time, the rice plants that was in younger growing stage in the late transplanting field of southern area of Korea had the severe damages. Although panicles of rice plant which was in the meiotic growing stage and heading stage were died when flooded, they had 66％ of yield compensating ability by the upper tilling panicle produced from tiller with dead panicle in ordinary transplanting paddy field. It is effective for reduction of flooding damages to cultivate the resistant variety to flooding having the resistance to bacterial leaf blight, lodging and small brown planthopper simultaneously. Especially, Tongil type rice varieties are relatively resistant to flooding, compared to Japonica rice varieties. Tongil type rice varieties had high survivals, low elongation ability of leaf sheath and blade, high recovering ability by the high root activity and photosynthesis and high yield compensating ability by the upper tillering panicle when flooded. To minimize the flooding and wind damage to rice plants in future, following research have to be carried out; 1. Data analysis by telemetering and computerization of climate, actual conditions and growing diagnosis of crops damaged by disasters. 2. Development of tolerant varieties to poor natural conditions related to flooding and wind damages. 3. Improvement of the reasonable cropping system by introduction of other crops compensating the loss of the damaged rice. 4. Increament of utilization of rice plant which was damaged.