• Journal of the korean academy of Pediatric Dentistry
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• v.44 no.1
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• pp.11-19
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• 2017

The purpose of the study was to investigate the distribution of primary fused teeth and identify the correlation between primary fused teeth and their effect on permanent dentition. 2575 children between the age of 4 and 6 in Kyungpook National University Hospital from January 2009 to August 2015 were investigated. A total of 84 children (46 boys and 38 girls) had fused teeth. 14 of these children had two fused teeth. Prevalence of caries involvement was in 65% of maxilla and 6% of mandible. Prevalence of permanent successors missing was 86.3% in the cases involving maxillary central and lateral incisor, 70% in mandibular lateral incisor and cuspid, 11.7% in mandibular central and lateral incisor. 27 of 84 children (32.1%) had supernumerary teeth. The highest prevalence rate is seen in the cases involving maxillary central and lateral incisor. Delayed permanent tooth eruption was only observed in the maxilla because of developing supernumerary tooth. Early diagnosis of fused tooth in the primary dentition can allow the dentist to make treatment plan at the appropriate time in accordance with the tooth arrangement and tooth development.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.2
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• pp.136-143
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• 2004

The purpose of this study was to investigate the relationship between morphology and position of deciduous double teeth, and the occurrence of other dental anomalies in the same subject. Four morphological types were indentified according to Ailing's classification: type I, bifid crown-single root; type II, large crown-large root; type III, two fused crowns-single root; type IV, two fused crowns-two fused roots. Fifty-four double teeth were found in a total of 1,803 children, who had visited Wonkwang university hospital for dental treatment from January 1, 2003 to September 30, 2003. All of these children were examined clinically and intra-oral radiographs were taken. The results were as follows; 1. 49 children(2.7%) had more than one double teeth, 5 of these children had two double teeth on the bilateral side. And one child showed triple teeth which has three crowns and three roots. 2. Double teeth were predominantly situated in the anterior region, with a preference for the mandible. The ratio of cases involving central incisor and lateral incisor was higher than other cases. 3. There were 25 cases(46.2%) of missing successors among 54 cases of the double teeth. And, prevalence of the missing teeth was highest in the cases involving maxillary central incisor and lateral incisor. 4. In the case of type II(large crown-large root) had more missing successors.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.383-391
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• 2018

The Purpose of this study was to convergence factors which affect the subject of basic dental hygienics in some dental hygiene students. The questionnaire was conducted in 450 dental hygiene students who had completed clinical practice. The level of self-confidence of the students was significantly higher if the level of satisfaction with the subject of basic dental hygienics was higher (r=0.365). Also, the level of self-confidence was significantly higher if the satisfaction with the major was higher (r=0.320) and the level of satisfaction with the major was significantly higher if the level of satisfaction with the subject of basic dental hygienics was higher (r=0.314). This study is expected to be used as a basic material for the development of systematic and convergence programs related with basic dental hygiene in connection with clinical practice.

• Journal of the Korea Convergence Society
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• v.10 no.7
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• pp.87-92
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• 2019

This study was to investigate the convergence relationship of self-esteem, empathy ability and interpersonal relationship ability of 351 dental hygiene students in Jeollabuk-do area. The data were analyzed using SPSS software program 22.0. In case of interpersonal relationship ability, there were significantly different means with health state(p=0.005) and major satisfaction(p=0.004). Self-esteem, empathy ability and interpersonal relationship ability was positive correlated(r=0.600, p<0.01). The factors influencing interpersonal relationship ability were self-esteem and empathy ability(p<0.001). The explanatory power of the study was 38.0%. It is necessary to develop a dental hygiene education program for improving self-esteem, empathy ability and interpersonal relationship ability.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.289-290
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• 2022

본 연구에서는 선박의 중요부품인 메인엔진에서 수집되는 센서 데이터를 사용하여 선박 메인엔진의 이상치를 탐지하는 시스템을 소개한다. 본 시스템의 특장점은 이상치 탐지 뿐만 아니라, 이상치의 센서별 기여도를 정량화 함으로써, 이상치 발생을 유형화 하고 추가적인 분석을 가능하게 해준다. 또한 웹 인터페이스 형태의 편리한 UI를 개발하여 사용자들이 보다 편리하게 이상치

• Journal of the Korea Convergence Society
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• v.10 no.6
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• pp.411-416
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• 2019

This study was to investigate the supporting about knowledge, attitudes and service requirements of dental hygiene students on dementia. According to a survey of 200 students in some local dental hygiene, there were positive correlations between attitude and service requirements(r=.59 p=.000) about dementia. The factors of convergence on service requirements for dementia have been shown to be significant in attitude. Therefore, training content and courses are needed to instill diverse service content and positive attitude about dementia for dental hygiene students to provide.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.787-790
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• 2021

본 논문에서는 최신 모션 인식 기술을 활용하여 골프 스윙 비디오에서 사람의 자세를 추정한 후 다양한 원인으로 오검출된 좌표들을 보정하여 자세 추정의 정확도를 높이는 방법을 제안한다. 기존의 사람 자세 추정 모델은 골프 스윙 데이터에서 오검출, 반전, 불안정성, 미검출의 문제를 보여 정확한 자세 추정을 어렵게 했다. 이를 해결하기 위하여 본 연구에서는 자세 추정시 발생하는 이상치 데이터들을 Bi-LSTM 으로 학습하고 골프 스윙의 특징을 고려한 간단한 규칙을 통하여 이상치 데이터를 효과적으로 검출하고 이를 보정하는 방법을 제안한다. 또한 다양한 실험과 분석을 통하여 제안하는 방법이 골프 스윙 모션에서 사람의 자세를 정확히 추정할 수 있음을 보인다.

• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.473-483
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• 2018

The purpose of this study was to identify the effects of bowel preparation convergence program for colonoscopy. This study used a nonequivalent control group pretest-posttest design. A sample of 75 clients, who were scheduled for colonoscopy, was included. The experimental group was given bowel preparation convergence program including audiovisual education, walking-exercise and telephone counseling. The data were collected using a structured questionnaire and colonoscopy monitoring and were analyzed using SPSS 21.0 program. The experimental group reported significantly higher compliance of taking bowel preparation agents and test satisfaction(p=.002; p=.001), lower test difficulty and test discomfort than those of the control group(p=.002; p=.001). There were significant differences in level of bowel cleansing and test time required except compliance of diet restriction between groups(p<.001; p=.001; p=.108). This findings indicate that bowel preparation convergence program can be an effective nursing intervention for colonoscopy. The convergence intervention for diagnostic test is needed to be developed in clinical practice.

• Journal of Convergence for Information Technology
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• v.10 no.9
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• pp.15-21
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• 2020

This paper presents the outlier detection algorithm in the estimation method of a source location and velocity based on two-step weighted least-squares method using time difference of arrival(TDOA) and frequency difference of arrival(FDOA) data. Since the accuracy of the estimated location and velocity of a moving source can be reduced by the outliers of TDOA and FDOA data, it is important to detect and remove the outliers. In this paper, the method to find the minimum inlier data and the method to determine whether TDOA and FDOA data are included in inliers or outliers are presented. The results of numerical simulations show that the accuracy of the estimated location and velocity is improved by removing the outliers of TDOA and FDOA data.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.99-104
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• 2018

The purpose of this study was to investigate the convergence factors affecting professional identity perceived by the emotional labor of clinical practice and self-esteem in some dental hygiene students. The questionnaire was conducted in 205 dental hygiene students from 3 university in Jeollanam-do area. The data were analyzed using SPSS 12.0. Professional identity correlated positively with self-esteem(r=0.366, p<0.01), negatively with emotional labor of clinical practice(r=-0.213, p<0.01). The convergence factors influencing professional identity were satisfaction level with majors(${\beta}=0.434$), self-esteem(${\beta}=0.236$) and emotional labor of clinical practice(${\beta}=-0.199$). The regression model explained 34.6% of professional identity. Therefore, to enhance professional identity in dental hygiene students, it is required to program development to improve satisfaction level of with majors, self-esteem and management of emotional labor of clinical practice.