• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1029-1030
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• 2023

시각장애인의 독립보행은 많은 위험 부담과 어려움을 안고 있다. 본 연구는 이러한 어려움을 해결하고자 사용자에게 GPS를 통해 목적지까지 안전한 경로로 안내하는 기능을 제공한다. 사물 인식 알고리즘을 통해 주행 시 필요한 장애물 판별과 신호등의 색상 등을 인식한다. 그리고 아두이노 초음파 센서를 활용하여 장애물과 사용자 간의 거리를 인식하고, 블루투스 모듈을 통해 측정한 값을 송신하여 구간별에 따라 사용자에게 경고음을 울린다. 더 나아가 AR 기능을 통해서 장애물을 입체적으로 강조하여 표시함으로써 저시력 장애인들이 장애물과 충돌하는 것을 예방한다.

• Education of Primary School Mathematics
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• v.21 no.3
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• pp.329-349
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• 2018

The purpose of this study is to investigate the mathematical belief of elementary school preservice teachers and elementary school teachers and to analyze their differences in mathematical belief. The results of the analysis are as follows. First, Elementary school preservice teachers generally regard the belief in the nature of mathematics as 'rules and procedures' and emphasize the 'process of inquiry' about the beliefs of learning mathematics. When comparing the beliefs according to gender, there is a significant difference only in the category of 'teacher instruction' among the beliefs of learning mathematics. Second, elementary school teachers generally regard the nature of mathematics as a 'inquiry process' and have a 'student-led' belief about the learning mathematics. There is no significant difference of the belief about the nature of mathematics and learning mathematics between the elementary school teachers by gender and majors. However, when comparing the mathematical beliefs according to educational level, there is a difference in beliefs about the nature of mathematics. Third, comparing the mathematical beliefs of elementary school preservice teachers and elementary school teachers, there is no statistically significant difference between the two groups in the 'rules and procedures' subcategories of the nature of mathematics, but there is a significant difference in 'inquiry process'.

• Journal of the Korea Society of Computer and Information
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• v.25 no.3
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• pp.177-183
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• 2020

The purpose of the study is to investigate the women's college students' perceptions on work scope of dental hygienists and the inclusion of dental hygienists in the category of medical personnel. A self-reported questionnaire was completed by 180 Suwon women's college students from August 26, to September 11, 2019. The questionnaire consisted of oral health condition of the subjects, perception of both legal and illegal work scope of dental hygienist, the degree of recognition of medical personnel occupations by subject, and the reason why they thought dental hygienists are medical personnel. The collected data were analyzed based on frequency, percentage, and descriptive statistics using IBM SPSS VER 22.0. It showed significantly different perception of work scope of dental hygienists according to the major. Percent of 70 of the subjects perceived dental hygienist as a medical personnel, the opinions on the necessity were as follows: The Ministry of Health and Welfare issues a license through the national examination role and dental hygienists assist the care of dentist. Therefore, clinical dental hygienists should be promoted to medical personnel through the amendment of the medical law so that the duties practiced by the dental hygienist can be matched with the legal practice.

• Journal of KIISE:Software and Applications
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• v.35 no.7
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• pp.431-441
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• 2008

The academic information analysis service is including automatic recommendation of reviewers and analysis of researchers' accomplishments. The service of recommendation of reviewers should be processed in a transparent, fair and accountable way. When selecting reviewers, the following information must be considered: subject of project, reviewer's maj or, expertness of reviewer, relationship between applicant and reviewer. The analysis service of researchers' accomplishments is providing statistic information of researcher, institution and location based on accomplishments including book, article, patent, report and work of art. In order to support these services, we designed ontology for academic information, converted legacy data to RDF triples, expanded knowledge appropriate to services using OntoFrame. OntoFrame is service framework which includes ontology, reasoning engine, triple store. In our study, we propose the design methodology of ontology and service system for academic information based on OntoFrame. And then we explain the components of service system, processing steps of automatic recommendation of reviewers and analysis of researchers' accomplishments.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.328-328
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• 2023

표준강수지수(Standardized Precipitation Index, SPI)는 강수량 변동의 정도를 표준화하여 나타낸 지수로, 가뭄 평가에 적용되고 있다. 일반적으로 SPI를 산정할 때는 월 단위의 시간 척도를 적용하며, 장기간의 가뭄에 대해 평가한다. 그러나 시간 척도가 길어질수록 가뭄 발생 후 가뭄을 감지하는 데 걸리는 시간이 더 길어지기 때문에 대처가 더욱 어려워진다. 또한, 기후변화로 인해 가뭄 빈도가 증가하고, 그 정도가 더욱 심화되면서 일 단위의 적용이 필요해지고 있다. 본 연구는 한반도 남부지역을 대상으로 일 단위의 SPI 적용을 위한 최소 시간 척도를 조사하였다. 대상 지역을 강원권, 수도권, 부울경, 대경권, 호남권, 충청권의 총 6개 지역으로 분리하여, 각 지역별, 계절별 최소 시간 척도를 조사하였다. SPI 산정을 위해 후보 분포형으로 Gumbel, Gamma, GEV, Loglogistic, Lognormal, Weibull을 적용하였으며, 시간 척도는 5일부터 365일까지 총 10개로 설정하였다. 본 연구에선 크게 적합도 검정과 정규성 검정으로 진행하였다. 적합도 검정에서는 Chi-square test를 적용하였으며, 이때 일 단위의 짧은 시간 척도를 적용할 경우 누가 강수 시계열의 값이 0으로, 0값이 시계열에 포함되면 SPI의 정확도가 떨어지는 문제가 발생하는데, 이를 보완하기 위해 누가 강수 시계열의 0값을 고려하였다. 마지막으로 각 후보 분포형을 적용하여 산정된 SPI가 표준정규분포에 합당한지를 검증하기 위해 Anderson-Darling test를 수행하였다. 결과적으로 대부분의 지역에서는 봄과 여름의 경우 최소 15일 정도의 시간 척도까지는 적용할 수 있을 것으로 판단되며, 겨울의 경우는 최소 30일 정도의 시간 척도를 적용해야 함을 확인하였다. 지역별로 차이가 크진 않지만, 이러한 연구 결과를 참고하여 각 지역별로 더 나은 가뭄 대책을 마련할 수 있을 것으로 기대된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.167-167
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• 2021

2018년 재해연보에 따르면 최근 10년간 자연재해는 태풍과 호우에 의한 평균피해액이(301,680백만원) 전체 재해평균피해액(344,124백만원)의 87.6%로 나타났다. 이처럼 물 관련 재해가 다른 재해에 비해 상대적으로 큰 비중을 차지하는 대표적 원인은 국지성 집중호우의 발달과 개발로 인한 불투수면적의 증가 및 지표면 유출량의 증가등이 있다. 이러한 요인들로 하천범람이 지속적으로 증가하고 있으며 이에 대응할 치수계획수립이 필요한 실정이다. 세종특별자치시의 하천기본계획(2020.01)에 따르면 세종특별자치시의 금남면 도남리의 도남천지구는 제방고 및 여유고 부족과 인명 및 재산피해 우려 지역으로 하천재해 위험지구로 선정되었다. 따라서 본 연구의 목적은 도남천지구에 강우-유출모형을 적용하여 빈도별 월류위치 파악과 하천범람지도를 작성하여 대피범위등 유역치수계획수립시 기초자료에 활용 되고자 한다. 강우분석을 위한 강우관측소 선정은 티센망 확인을 통하여 공주시(반포중) 강우관측소를 선정하였다. 강우분석은 자료기간이 짧은 강우관측소에서도 확률강우량을 산정할 수 있는 지역빈도해석을 하였으며 분석결과 적합한 확률분포형은 GEV인 것으로 나타났다. 빈도별 홍수량 산정을 위해 HEC-HMS모형을 이용하였으며 산정방법은 깅우-유출 관계 분석 방법에 의한 다양한 합성단위도 방법중 일관성과 객관성이 입증되어 온 Clark단위도 법을 사용하였다. 산정한 홍수량을 HEC-RAS모형에 적용하여 월류구간을 파악하였으며 월류위치 및 대피범위를 가시화 하기 위해 HEC-GeoRAS모형을 사용하여 빈도별 하천범람지도를 작성하였다. 본 연구는 도남천지구에 빈도별 하천범람지도를 작성 하였다. 이를 통하여 하천범람시 대피범위등 유역치수계획 수립 시 도움이 될 것으로 판단된다.

• Journal of the Korea Convergence Society
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• v.8 no.2
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• pp.99-112
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• 2017

The purpose of the study is to investigate the convergence comparison of the stress, major satisfaction, career identity, and college adjustment of nursing students according to college admission process and grade. The 349 subjects were studying in the nursing department in the City P. And the data collection was carried out from April 2016 until May 2016. The data analysis was carried out with the frequency, the percentage, the ${\chi}^2$-test, and the ANOVA by using the SPSS 23.0 Program. Regarding the research results, first, there were no significant differences among the entire academic years according to the admission type. Second, regarding all the admission types according to the academic year, there were the significant differences among stress (p=.001), the degree of satisfaction with the major (p<.001), the sense of career path identity (p=.021), and the adaptation to the college life (p<.001). As a result, I propose that, based on these results of the research, as a strategy for reducing the stress and for improving the degree of satisfaction with the major, the sense of career path identity, and the capability to adapt to the college life on the part of the nursing students, a differentiated, customized educational program by type of admission and by academic year should be developed and applied.

• Korean Security Journal
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• no.16
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• pp.101-118
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• 2008

The subjects in this study were 500 students who were selected from a population that consisted of security majors who took courses in martial arts in four different four-year-course universities. After a survey was conducted, the answer sheets from 451 students were analyzed except 49 incomplete ones. The collected data were analyzed with SPSS Ver. 12.0 program. Frequency analysis, t-test and one-way ANOVA were utilized, and LSD and regression analysis were employed to make a post-hoc comparison. All the hypotheses formulated in this study were verified at the a=.05(Chronbach's alpha) level of significance. The findings of the study were as follows: First, as for relations between demographic characteristics and self- realization, the college students investigated were statistically different according to gender in three subvariables of self-realization that included ability development, ability display and attainment of ideal. Age and academic year made a significant difference to their ability development and attainment of ideal, and they differed statistically significantly in terms of ability development according to black lebel test. Second, concerning connections between the degree of martial-arts training and self-realization, training term, one of the subvariables of the degree of martial-arts training had a positive correlation to their ability development and attainment of ideal at the 5% level of significance, and training time was positively correlated to their ability development at the 5% level of significance. Third, training term, one of the subvariables of the degree of martial- arts training, had an impact on ability development, and that exerted a firsthand influence on attainment of ideal as well.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.310-322
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• 2020

This study also examined the influence of academic stress on major satisfaction of college students and the influence of self-efficacy and social support. The subjects of this study were 320 students attending K university in B city. The 295 questionnaires were collected and 291 questionnaires were finally analyzed except for 4 questionnaires that were insufficient. Major satisfaction had a statistically significant negative correlation with academic stress, and major satisfaction had a statistically significant positive correlation with self-efficacy. Also, major satisfaction had a statistically significant positive correlation with social support. Finally, as a result of examining the effects of each factor, academic stress, self-efficacy, and social support had a significant effect on major satisfaction except for informational support in social support. In order to increase the satisfaction of college students, it is necessary to study the factors that can lower academic stress and develop the program accordingly. It is necessary to develop educational methods and programs that can increase self-efficacy and social support. This is considered to have a positive effect on the satisfaction of college students.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.879-882
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• 2007

현재와 같은 지식정보화사회에서는 우수한 IT인력 확보가 곧 국가와 기업의 경쟁력이다. 이를 위해 대학과 기업은 맞춤형 IT인력 양성을 위해 다양한 산학협력을 실시하고 있다. 본 논문에서는 부산지역 4년제 대학의 1999학년도부터 2006학년도까지 총 8년간의 입시 변화를 추적 조사하여 IT관련 모집단위의 핵심단어를 5개 그룹($\Delta$전기 전자분야(G1), $\Delta$통신분야(G2), $\Delta$컴퓨터분야(G3), $\Delta$멀티미디어 콘텐츠(G4), $\Delta$IT융합 특성화(G5))으로 묶고, 각 그룹별로 다시 몇 개의 세분류로 나누어 제시하였다. 본 논문은 대학의 IT관련 학부명 학과명 전공명 등 모집단위의 변화가 어떤 변화를 거쳤으며 또한 이의 모집정원은 어떤 변화를 가져 왔는지에 대한 총괄적인 조사를 위한 IT $\ulcorner$학부 학과 전공$\lrcorner$ 의 핵심단어에 의한 그룹별 분류 체계에 관한 연구이다.