컴포넌트기반의 웹 기반 교육시스템 설계에 관한 연구

전주현,홍찬기,Jeon, Ju-Hyeon,Hong, Chan-Gi 한국정보처리학회 2001 정보처리학회논문지D Vol.8 No.6

When the developers develop the software, the cost and time of the software development can be reduced by using blocks that are implemented previously. We call these implemented blocks components. In the early stage of Web-based Instruction, it didn't gain preference in spite of it's benefit of convenience. The main reason is, I think, the lack of generality at the education system which eventually results in unsatisfactory facilities compared with the requirement of teachers and students. And the early systems don't make good use of the plenty data in distributed environment, and don't show so good reliablity due to lack of systematic design and development. In this paper, we suggest WBI developing technology using the concept of WBSE. WBI developing is consist of component of pre-developed education software, integration of component using its reusability, and production of more requirement-satisfactory education software. 소프트웨어를 개발하는데 미리 구현된 블록을 사용하여 소프트웨어 개발비용과 시간을 단축할 수 있다. 이와 같이 미리 구현된 블록을 컴포넌트(Component)라고 한다. 웹 기반 교육(WBI)이 많은 장점을 가지고 있으나 한편으로는 웹 기반 수업 혹은 웹 기반 교육의 초기에는 교수자의 개인적인 수준에서 교육 시스템이 개발 운영되어 체계적으로 개발 관리되지 못하였고 교수-학습자의 요구사항을 충분히 반영하지 못하였다. 그리고 분산되어 있는 자료의 적절한 활용과 검색이 용이하지 못하여 중복 개발되고 신뢰성이 떨어지는 문제점등을 내포한다. 이 논문에서는 WBSE(Web Based Software Engineering)개념을 웹 기반 교육시스템에 도입하여 요구사항을 반영하고 기존에 개발되어 사용되고 있는 소프트웨어를 컴포넌트화 하는 작업을 시도하여 이를 재사용 통합함으로써 새로운 교육 소프트웨어 개발에 사용하는 일련의 과정에 대하여 연구 기술하였다.

중부지방소나무의 생장특성 및 경험적 임분수확모델 개발

전주현 ( Ju Hyeon Jeon ),손영모 ( Yeong Mo Son ),강진택 ( Jin Taek Kang ) 한국임학회 2017 한국산림과학회지 Vol.106 No.2

본 연구는 중부지방소나무에 대하여 현실림을 반영한 수확표를 조제하기 위하여 수행되었다. 현재 사용하고 있는 수확표는 정상적인 생육 이상의 군락을 대상으로 조사·분석한 결과로 현실림보다 과대한 값을 제공하여 법정림 외에 적용하기는 다소 어려운 점이 있었다. 따라서 본 연구에서는 침엽수 대표 수종인 소나무를 대상으로 현실림에 대한 임분 생장량을 추정하였다. 본 연구에 이용한 자료는 국가산림자원조사(National Forest Inventory) 자료 중 1,957개의 중부지방소나무 표본점 자료를 이용하였다. 분석절차는 직경분포의 추정, 적합, 예측의 단계를 거쳤으며, 직경분포모델은 Weibull 함수를 이용하였다. 생장모델 내 평균직경과 평균흉고단면적 추정 시 사용한 모델은 Weibull과 Schumacher였다. 기준임령 30년을 바탕으로 중부지방소나무의 지위지수 범위는 8-14에 있는 것으로 나타났다. 임분수확표 지위 12에 따르면, 30년생일때 연평균생장량(MAI)이 4.42 m³/ha로 나타났다. 기존 수확표와 비교하였을 때 본 연구결과의 연평균생장량이 더 낮은 것을 알 수 있으며, 이는 법정림과 현실림의 지위지수별 연령별 재적의 차를 쌍체 T-검정(paired t-test)한 결과, 0.001이하의 p-value를 가져 통계적으로 유의한 차이가 있는 것으로 판단하였다. 본 연구의 결과를 바탕으로 중부지방소나무의 현실적인 산림 경영과 관리정책에 도움을 줄 수 있을 것으로 사료된다. This study was conducted to construct a empirical yield table for Pinus densiflora in real forest. Since existing normal yield tables have been derived by studying and analyzing communities in ideal environment for tree growth, those tables provide more over-estimated values than ones from real forest. Because of this, there are some difficulties to apply the tables to empirical forest except for normal forest. In this study, therefore, we estimated stand growth for real forest on P. densiflora as the representative species of conifers. We used 1,957 sample plot data of P. densiflora in central Korea from National Forest Inventory (NFI) system, and analyzed through estimation, recovery and prediction in order by using Weibull function as a diameter distribution model. Weilbull and Schumacher models were applied for estimating mean DBH and mean basel area and it was found that the site index for P. densiflora in central Korea ranges from 8 to 14 at reference age 30. According to site 12 in the stand yield table, the Mean Annual Increment (MAI) of P. densiflora was 4.42 m³/ha at 30 years of age. Compared to existing volume table constructed before, it is showed that MAI of this study were lower. According to the paired t-test that is conducted with the gap of volume values between normal forest and real forest by site index and age, the P-value was less than 0.001 which is recognized to have a statistically significant difference. Based on the results in this study, it is considered to be helpful for practical management and management policy on P. densiflora in central Korea.

장기입원환자와 일반인의 구강건강관련 특성 비교

전주현 ( Ju-hyeon Jeon ),권지애 ( Ji-ae Kwon ),남정민 ( Jeong-min Nam ),박현빈 ( Hyeon-bin Park ),송예진 ( Ye-jin Song ),최준선 ( Jun-seon Choi ) 한국치위생학회(구 한국치위생교육학회) 2016 한국치위생학회지 Vol.16 No.1

Objectives: The purpose of the study was to compare the oral health related characteristics between a long-term patients and general population. Methods: A direct interview questionnaire was completed by 160 patients and 165 general people from January 16 to April 31, 2014. The questionnaire consisted of general characteristics of the subjects, subjective health status, oral health behaviors, and needs of oral health. The data were analyzed using SPSS 18.0 program. Results: The long-term patients reported that most of them were denture wearers(38.1%), and had oral disease symptoms(62.5%) and xerostomia(65.6%). Most of the long-term patients were ex-smoker(31.3%) and did not receive regular dental check-up(92.5%). They did not know tooth brushing method(31.3%) and brushed their teeth less than twice a day(47.5%). Those who used tooth brush for more than 6 months accounted for 47.5%. Most of them did not use auxiliary oral hygiene devices(85.6%). The patients answered that oral health is not important(6.9%), oral health education is not necessary(7.5%), and oral cleaning(26.3%) should be included in oral health education. Conclusions: The self-reported oral health status of the long-term patients much more serious than the general population. It is necessary to educate the continuing oral health management program for the long-term patients.

머신러닝을 통한 테트리스 자가 학습 능력 향상

전주현(Jeon Ju Hyeon),권영미(Youngmi Kwon) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

본 논문은 전 세계의 사람들이 남녀노소 불문하고 즐겨하는 테트리스 게임에 사람이 직접 플레이하는 방식 대신 AI 인공지능 Q-Learning 기술을 접목시켜 테트리스를 자가학습 시켰을 때 고득점을 얻을 수 있는 지능을 갖도록 프로그램으로 구현하였고 그 결과를 분석하였다.

한방복합치료로 난치성 통증을 동반한 요추 추간판탈출증이 호전된 증례보고

최현규 ( Hyeon Kyu Choi ),이영록 ( Young Rok Lee ),차현지 ( Hyun Ji Cha ),성기정 ( Ki Jung Sung ),김범석 ( Beom Seok Kim ),김민주 ( Min Ju Kim ),이예지 ( Ye Ji Lee ),전주현 ( Ju Hyun Jeon ),김영일 ( Young Il Kim ) 경락경혈학회 2021 Korean Journal of Acupuncture Vol.38 No.3

A 57-year-old female diagnosed with L5-S1 lumbar intervertebral disc herniation, suffering from severe pain despite taking tapentadol received combined Korean medicine treatment, including acupotomy, acupuncture, pharmacopuncture, and herbal therapies for 53 days. To assess pain, Numeric Rating Scale (NRS) and lumbar range of motion (ROM) were checked daily from the day of admission. Moreover, the Oswestry Disability Index (ODI) and European Quality of Life-5 Dimensions (EQ-5D) were used to evaluate function and quality of life. After combined Korean medicine treatment, reabsorptioin of intervertebral disc was confirmed by radiological examination; pain reduced from NRS 5∼7 to NRS 1∼2; lumbar ROM in extention increased from 20° to 30°; and function and quality of life improved. The results suggest the possibility that a combined Korean medical treatment, including acupotomy, can be used as an alternative to opioids for pain management of lumbar vertebral disc herniation.

벨 마비 재발 환자에 대한 임상적 고찰: 후향적 관찰연구

김민주(Min Ju Kim),최현규(Hyeon Kyu Choi),차현지(Hyun Ji Cha),이영록(Young Rok Lee),장현진(Hyun jin Jang),김소정(So jeong Kim),전주현(Ju Hyun Jeon),김영일(Young Il Kim) 대한한의학회 2022 대한한의학회지 Vol.43 No.2

기후변화에 따른 구실잣밤나무의 생육 적지 예측 및 탄소저장량 추정 - 완도지역을 대상으로 -

강진택 ( Kang Jin-teak ),전주현 ( Jeon Ju-hyeon ),손영모 ( Son Yeong-mo ) 한국도서학회 2016 韓國島嶼硏究 Vol.28 No.2

본 연구는 최근 기후변화로 인한 난대수종의 확산에 따라 난·온대지역에 분포하고 있는 상록활엽수종인 구실잣밤나무의 생육최적지 예측 및 탄소저장량 추정을 위해 수행되었다. 임목의 생장과 입지환경 인자간의 생육최적지 예측을 위하여 도서 및 난ㆍ온대지역에 분포하고 있는 구실잣밤나무 자생지 임분의 40개 표준지로부터 생장 및 입지환경인자 데이터를 수집하였다. 수집된 질적ㆍ양적 데이터의 수량화에 의한 생장요인과 입지환경요인간의 관계구명에 의하여 생육적지 평가기준을 설정하였다. 생육적지 평가기준을 적용하여 개발된 GIS 적지예측프로그램을 이용하여 다양한 난대상록활엽수가 분포하고 있는 전남 완도지역을 대상으로, 구실잣밤나무의 생육적지 예측과 매핑(mapping) 분석을 실시하고 생육적지 등급지별 탄소저장량을 추정하였다. 구실잣밤나무의 등급별 생육적지 면적과 탄소저장ㆍ흡수량은Ⅰ등급(최적지) 지역은 734.4ha(12.4%), 160,018.4 tCO2, 4,651.7 tCO2/ha/yr, Ⅱ등급 지역은 2,265.7ha(38.7%),493,673.4 tCO2, 14,350.9 tCO2/ha/yr, Ⅲ등급 지역은 2,416.4ha(41.3%), total 526,509.4tCO2, 15,305.5 tCO2/ha/yr 그리고 Ⅳ등급 지역은 433.3ha(7.6%), 94,411.7 tCO2, 2,744.5tCO2/ha/yr 로 나타났다. This study is conducted to predict the optimal growth site and estimate carbon stocks for Castanopsis sieboldii(Makino) Hatus, evergreen broad-leaved tree ranged throughout warm temperate zone, in accordance with the expansion of tree species of warm temperature zone by climate changes. In order to predict the optimal growth site between tree growth and site environment, data of growth factors of tree and environmental factors have been collected from 40 sample plots of natural growth stand of C. sieboldii in warm temperate zone. Assessment criteria of the optimal growth site was obtained by analyzing relationship between growth factors from quantification method of qualitative and quantitative data collected and site environment factors. By GIS program of suitable-site prediction developed from derived suitable-site assessment criteria, performed prediction and mapping to suitable growth sites for C. sieboldii in Wando of Jeollanam-do having various warm temperate evergreen broad-leaved trees, and then estimated carbon stocks of suitable growth sites at each level. In the result of analysis, suitable growth site areas and carbon stocks at each level for C. sieboldii are followed by: Ⅰ class(the optimal site) was 734.4ha(12.4%), 160,018.4 tCO2, 4,651.7 tCO2/ha/yr, Ⅱ class was 2,265ha(38.7%), 493,673.4 tCO2,, 14,350.9 tCO2/ha/yr, Ⅲ class was 2,416.4ha(41.3%), 526,509.4 tCO2, 15,305.5 tCO2/ha/yr and Ⅳ class was 433.3ha(7.6%), 94,411.7 tCO2, 2,744.5 tCO2/ha/yr.

임업생산비통계를 이용한 연도별 밤 생산량의 기술효율성 평가

원현규 ( Hyun Kyu Won ),전주현 ( Ju Hyeon Jeon ),김철우 ( Chul Woo Kim ),전현선 ( Hyun Sun Jeon ),손영모 ( Yeung Mo Son ),이욱 ( Uk Lee ) 한국임학회 2016 한국산림과학회지 Vol.105 No.2

본 연구는 우리나라 연도별 밤 생산량에 대하여 기술효율성을 평가하기 위한 목적으로 수행하였고 기술효율성은 일정량의 비용을 투입하여 얻을 수 있는 최대 생산가능량을 의미한다. 기술효율성 분석을 위하여 산출방향 BCC 모형을 이용하였고 기술효율성 증감의 원인을 분석하기 위하여 단위당 투입비용, 생산량, 조수입, 순수입, 시장가격등의 상관관계를 분석하였다. 연구자료는 2008년부터 2014년까지 7년간의 임산물생산비통계를 활용하였다. 연구 결과, 2008년, 2009년, 2010년은 최대 생산가능량과 실제생산량이 ha당 1,568 kg, 1,745 kg, 1,534 kg로 동일하게 나 타나 기술효율성이 모두 1.00로 평가되었다. 그러나 2011년부터 2014년까지는 실제생산량이 ha당 1,270 kg 1,047 kg, 1,258 kg, 1,488 kg이고 최대 생산가능량은 1,524 kg, 1,467 kg, 1,635 kg, 1,637 kg으로 분석되어 기술효율성이 0.83, 0.71, 0.75, 0.91로 평가되었다. 기술효율성은 2012년이 0.71로 가장 낮은 것으로 평가되었고 2013년부터 기술효율성 값이 점차 증가하는 것으로 나타났다. 기술효율성 증감의 요인은 생산량과 시장가격의 관계성이 있으며 r = -0.821 (p<0.05)로 부(-)의 상관관계를 가지는 것으로 나타났다. 그리고 단위 면적당 최대 생산가능량 수준은 하한 1,488 kg과 상한 1,745 kg사이에 있으며 평균 1,584 kg인 것으로 나타났다. This study was conducted to evaluate the technical efficiency of Annual Chestnut production in South Korea. In this study, technical efficiency is the maximum possible production for which a certain amount of costs is inputted. For analysis on the technical efficiency we used output-oriented BCC Model, and then we analyzed correlation among input costs, production, gross income, net income, and market price per unit in order to determine the cause of variation in the technical efficiency. As study materials, we used statistics for the forestry production costs for 7 years from 2008 to 2014. The study results showed that the maximum possible production and actual production in 2008, 2009, and 2010 were 1,568 kg, 1,745 kg, and 1,534 kg by hectares in the order which were the same values. Consequently, the technical efficiency of those was all evaluated as 1.00. On the other hand, actual production from 2011 to 2014 was 1,270 kg 1,047 kg, 1,258 kg, and 1,488 kg by hectares in the order and the maximum possible production was 1,524 kg, 1,467 kg, 1,635 kg, and 1,637 kg by hectares in the analysis. From those values, the technical efficiency was evaluated in the following order: 0.83, 0.71, 0.75, 0.91. The lowest value of the technical efficiency was 0.71 in 2012, and the values of this increased gradually since 2013. It is indicated that the cause of variation in the technical efficiency was related to the relationship between production and market price, and there was a negative correlation with r = -0.82 (p<0.05). The level of maximum available production per unit area was between 1,488kg in lower limit and 1,745 kg in upper limit, and the average was turned out as 1,548 kg.

N-stepped chargers를 연계한 전기차 충전 스케줄링

전성국(Sung-Kook Jeon),전주현(Ju-Hyeon Jeon),박월국(WolGuk-Park),김성환(Seong-Hwan Kim),이동호(Dongho Lee) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.7

일개 한방병원에서의 흉요추 압박골절 입원 환자에 대한 통계적 분석: 후향적 차트리뷰

장현진,김소정,김민주,최현규,박필제,강연수,정정교,전주현,김영일,Hyun jin Jang,So jeong Kim,Min Ju Kim,Hyeon Kyu Choi,Pil Je Park,Yeon Soo Kang,Jeong Kyo Jeong,Ju Hyun Jeon,Young Il Kim 대한한의학회 2023 대한한의학회지 Vol.44 No.2

Objectives: This study was designed to statistically analyze patients hospitalized for thoracolumbar compression fractures at Daejeon University Daejeon Korean Medicine Hospital from January 1, 2017 to December 31, 2021. Methods: A total of 62 patients were analyzed through electronic medical records in this study. The extracted data was analyzed using IBM SPSS ver.27.0. Results: 1. Traffic accident patients were more likely to reduce pain by more than half compared to falls and other patients. Patients without spinal disease were more likely to reduce pain by more than half compared to those without. The shorter the absolute bed rest and the longer the hospital stay, the higher the probability of pain reduction by more than half. 2. The duration of pain half-reduction was longer in patients with diabetes than in patients without diabetes. 3. The longer the hospitalization period and the shorter the absolute bed rest period, the less pain was reported upon discharge. Males complained of less pain at discharge than females, and patients without spinal disease complained less than those without. Patients who did not receive absolute bed rest complained of less pain upon discharge than those who did not. Conclusions: This study included patients hospitalized for thoracolumbar compression fractures and showed that etiology, absolute bed rest period, hospitalization period, gender, spinal disease, diabetes statistically affected the degree of pain reduction.