• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.539-541
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• 1999

기존의 문장종속형 화자인식 기법에서는 음성 신호의 각 분석 프레임이 같은 기여도를 갖는 것으로 간주한다. 화자인식 시스템의 성능향상을 위해서는 음운정보보다는 인식의 단서가 되는 화자의 개인성 정보가 잘 반영되도록 하는 것이 중요하다. 본 논문에서는 HMM (hidden Markov model)을 기반으로 한 문장종속형 화자확인 시스템의 성능향상을 위해 프레임별로 인식의 단서가 되는 개인성 정보의 양을 측정하는 방법과, 이를 화자확인 시스템에 적용하는 기법을 제안한다. 제안한 방법을 적용한 결과, 기존의 우도비(likelihood ratio) 정규화 점수를 사용하는 방법에 비해 동일오류율(EER; equal error rate)을 평균 34% 감소시켜 인식율 향상을 얻을 수 있다.

• Journal of the Speleological Society of Korea
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• no.92
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• pp.49-54
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• 2009

Classified by the characteristics of caves, without academic basis, was used by multiple variables of external characteristics of caves, such as accommodation, nearby attractions, number of restaurants & supporting cities. It used cluster analysis as an analysis technique. It is classified in 5 different typesby the results of the analysis, and the results say that the diverse classification of visitors' demand is possible.

• Journal of Korea Multimedia Society
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• v.10 no.5
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• pp.679-686
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• 2007

Every year, although the number of game enterprises increases, every game which is developed and distributed by these enterprises do not have competitiveness. One game even increasing competitiveness and added value of game industry, we have to develop games which are satisfied with users, and for it, we need scientific research which evaluates about satisfaction. In this paper, We quantatively estimate game satisfaction by using AHP and statistical method. Also we discuss the method which derive distribution of game satisfaction. We can acquire expected effect which predicts satisfaction level and standard about games by using these methods.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.243-248
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• 2014

This study has been carried out to find out current status of understanding radiation safety expertise by workers under the present training scheme and to minimize radiation risks at work as well as to refurbish training systems for mitigation of uneasiness of the people at large in near future. Questionnaire survey asking 30 items was carried out during 3 months from May to July, 2013. The number of the overall respondents were about 500. Overall scores of hath degree of the basic knowledge and of the attitude related with radiation safety could he procured through analysis of the questionnaire data. Results were as followings: The workers of the higher academic level, the larger of the accumulated training time and the worker's personal antecedents, the more accredited license holders showed the larger scores of the basic knowledge of radiation as well as the attitude related with the radiation safety. The group having higher basic knowledge also showed the higher score in attitude related with radiation safety. The overall scores obtained from the radiation workers in industrial sector were relatively lower, in general, than those of the other sectors. These results suggest that the training program might better be separately implemented. A specific training program implementation might be desirable particularly for the workers in industrial sectors so as not only to reduce radiation risks of workers but also to mitigate the uneasiness arising among the people at large.

• The Journal of Society for e-Business Studies
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• v.22 no.1
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• pp.15-35
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• 2017

The method of weighted sum of evaluation using AHP is widely used in feasibility analysis and alternative selection. Final scores are given in forms of weighted sums and the alternative with largest score is selected. With two alternatives, as in feasibility analysis, the final score greater than 0.5 gives the selection but there remains a question that how large is large enough. KDI suggested a concept of 'grey area' where scores are between 0.45 and 0.55 in which decisions are to be made with caution, but it lacks theoretical background. Statistical testing was introduced to answer the question in some studies. It was assumed some kinds of probability distribution, but did not give the validity on them. We examine the various cases of weighted sum of evaluation score and show why the statistical testing has to be introduced. We suggest a non-parametric testing procedure which does not assume a specific distribution. A case study is conducted to analyze the validity of our suggested testing procedure. We conclude our study with remarks on the implication of analysis and the future way of research development.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.3
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• pp.671-678
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• 2021

In a previous study, technology protection levels were set on a qualitative basis. That study lacked quantitative standards, so here, we conduct a study to complement the previous study and to present an objective standard. This paper provides a method of setting a technical protection level that applies statistical analysis. To set the technology protection level, statistical analysis of six technical survey items is performed first. Second, the technical survey items are analyzed by AHP to quantify the opinions of experts in order to derive weights for each technical survey item. Finally, by using the normal distribution scatter map and median calculation method, the technology protection level is selected in three stages using the final detailed factor technology score reflecting the weight. The technology protection level methodology developed through this study is the first methodology with objectivity that can evaluate defense technology by level. If this methodology is applied in practice, it is believed that it will provide a scientific and quantitative technology value judgment criterion when setting the technology protection level in the future.

• Journal of Nutrition and Health
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• v.41 no.8
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• pp.797-808
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• 2008

This study has been carried out to obtain information related to food habits and snacking behaviors including health related behaviors. The subjects were 300 middle school students (144 boys and 156 girls). The results were as follows: Average height and weight of boys were 162.3 cm and 54.1 kg respectively. Those of girls were 159.8 cm and 49.0 kg respectively. 59.0% of the subjects of the subjects had 10,000-30,000 won as monthly allowances and their subjective health condition was good (55.7%). In the regularity of meal, 47.0% of the subjects had twice a day, the main reason for skipping meal was insufficient time to eat due to oversleep (54.3%). Most of the subjects (75.0%) had a prejudice in food selection because of a bad taste. 62.0% of the subjects ate snack between meals more than three times a week, because they were hungry, good taste and habitual. The criteria of choosing snack were taste, nutrition and quality of food. Food as snacks they frequently had fruits, milk and milk products, cookies, chocolate in order. Boys had more french fries than girls, girls had more fruits, cookies and chocolate than boys. Average food habit score of boys (49.27 ${\pm}$ 7.53) was higher than that of girls (48.54 ${\pm}$ 7.81). The group who had a higher food habit score, they had more fruits and less soft drink as snacks, lower BMI, and also less monthly allowance than the group who had a lower food habit score. This study may provide basic information on eating habits of middle school students, suggests that nutrition education or counseling can improve food habits and develop positive behaviors toward healthy diets.

• Journal of vocational education research
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• v.35 no.4
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• pp.63-88
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• 2016

This study surveyed and analyzed the labor market result when comparing the case that junior college students found a job after transferring to 4-year university with the case that they found the job directly after graduating the junior college. The difference of the occupational structure following the transfer was surveyed in detail and this study examined what effect the transfer had on the occupation status. The graduate occupation movement survey(GOMS) was used and the samples of 544 persons were extracted to use through propensity score matching(PSM) to raise the choice convenience of the sample. The occupation status index to use as a dependent variable was developed to apply. The study result is as follows. First, as a result of confirming the occupational structure of the transfer, the transfer students were distributed in more various industrial fields evenly compared to the non-transfer students in the horizontal industrial structure, and non-transfer students were intensively distributed in the certain field. In the vertical occupation status structure, transfer students were distributed in the high occupation status more than non-transfer students who were broadly distributed in the low occupation status. Second, it was revealed the college transfer was highly effective for the occupation status, which appeared statistically significantly. The explanation variable that appeared significantly outside of that included the parents' academic background, major affiliation, employment pattern, major job coincidence, and job coincidence. The higher students' academic background was, the higher the occupation status was and in case of the engineering natural science affiliation, the occupation status was higher than the humanities social science. In case of full-time workers, their occupation status was higher than one of part time workers and it was revealed the occupation status was high when the their major coincided with the job and their educational/technical level coincided with their job.

• Journal of the Korea Society of Computer and Information
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• v.25 no.10
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• pp.193-201
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• 2020

This study is to evaluate the effectiveness of problem-solving ability by applying a team-based learning model to the classes of humanities and social science students, and to conduct a structural model analysis on the relationship between sub-factors. Team-based learning was conducted six times in six teams with 30 students in the second and third grades of the humanities and social sciences. The problem solving ability score of the target students was significantly higher after team-based learning and was statistically significant. There was no problem in normality with the latent variables, which are the sub-factors of problem solving ability, and the factor load value was statistically significant at the .001 level in the confirmatory factor analysis of the observed variables for the latent variables, which was a valid model. A good level of fitness was also shown in the verification of the fitness of the research model. As a result, it was analyzed that latent variables of cause analysis, problem clarification, planning execution, performance evaluation, and alternative development had an indirect or direct influence on each other.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.206-215
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• 2020

This study analyzes the relationship between K-CESA of undergraduate students, and their coaching skill and creativity confluence competences. Totally, 344 students attending private colleges in G province were evaluated for their competence. The data collected were analyzed by descriptive statistics, Pearson's correlation analysis, multiple regression analysis and Sobel test, using the SPSS/PC 22.0 computer program. Our results indicate that K-CESA, coaching skill, and creative convergence fulfill the assumption of normality. Moreover, significant positive relationships were determined between K-CESA and creativity confluence, as well as between coaching skill and creativity confluence. Furthermore, K-CESA was an important factor that predicts the creativity confluence competency, and coaching skill had mediating effects on the relationship between K-CESA and creativity confluence competency. In conclusion, our results indicate that K-CESA and coaching skills are important factors that will help strengthen creativity confluence competences.