황토모르타르의 압축강도 증진을 위한 실험적 연구

황원주 ( Hwang Won Ju ),김종우 ( Kim Jong Woo ),하상수 ( Ha Sang Su ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2

The purpose of this experimental study is to increase the strength of mortar mixed with activated Hwang-Toh (AHT) and granulated blast furnace slag (GGBS) as a compound for the development of eco-friendly concrete. The compressive strength test was carried out by making mortar specimens with a certain ratio of AHT and GGBS. The percentage of AHT were at 30% and 50% and the GGBS were a 40% and 50% as Major variables. The results of this study showed that for specimens with percentage of AHT at 30% with GGBS increased above the strength of the mortar without the binding. However, the compressive strength of experimentation with percentage of AHT at 50% with partially replace GGBS has decreased by more than the mortar without the binding. Therefore, further study is deemed necessary.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

서남해안 2.5GW 해상풍력단지 건설의 경제효과분석

박재필 ( Jae Pil Park ),김민영 ( Min Young Kim ),황성원 ( Sung Won Hwang ),김형성 ( Hyoung Sung Kim ) 한국도서학회 2014 韓國島嶼硏究 Vol.26 No.3

MOTIE(Ministry of Trade, Industry & Energy) aims to build a Southwest 2.5GW offshore wind farm. The job will require help from the government, electric operator and manufacturers. The domestic offshore wind farm market will boost global competitiveness up until 2019. This research analyzes the economic impact of the offshore wind farm project. The local acceptance in terms of production, employment and value added are expected to be maximized. According to the quantitative analysis using the extended 2010 input-output table, we calculated that the production inducement impact will reach up to 13.5 trillion won. 11.07 trillion won from the offshore wind farm industry and 2.4 trillion won from others. Furthermore the impact of increase in employment is expected to reach 22,662. 9,883 will be from the wind farm industry and 12,779 from other fields. The impact is expected to be greater especially during the middle of the jobless growth period, Lastly, the value added inducement impact is expected to be 4.24 trillion won. Regarding economic impacts, strategies required for increasing local acceptance are as follows. First, in order to diversify and sophisticate the primary industry into a secondary or tertiary one, we need to develop the nearby wind farm site into a wind farm thema park. Attracting the wind farm production, installing and maintaining/repairing firms and establishing an experience center for K-12 students by providing them an education center for offshore wind energy can be specific means of development. Also, during the operation and after the destruction of facilities, the government should lay out the sub-structure of the wind farm as a sea ranch. Thirdly, the level of local acceptance regarding the community ownership of the offshore wind farm should increase to those of Middelgrunden(Denmark) and Navarra(Spain). Considering the economic condition of Buan, Gochang and the Yeonggwang area, community ownership is one of best solutions for the increment of local tax revenue. At last, considering the supports system of areas adjacent to power plants and ``Partnership management with local community’, the offshore wind farm operator may need to provide assistant policies to nearby communities. The policies should be based on Corporate Social Responsibility(CSR) such as education scholarship projects, local economy cooperative projects, sports/culture projects.

서울 강서지역 1개 대학병원에서 성인 급성 신우신염의 원인균과 항생제 감수성

황병연,이재갑,박대원,이연주,김성범,엄중식,손장욱,정희진,김우주,김민자,박승철 대한감염학회 2003 감염과 화학요법 Vol.35 No.5

목적 : 3년간 서울시 강서지역의 1개 대학병원에서 입원치료를 받은 성인 급성 신우신염 환자를 대상으로 원인균과 항생제 감수성을 조사하고, 향후 급성 신우신염의 초기 경험적 치료 항생제를 제안하고자 하였다. 방법 : 1999년 1월부터 2001년 12월까지 3년간 고려대학교 의과대학 구로병원에 상부요로감염으로 내원한 16세 이상 환자 229명의 의무 기록을 검토를 통하여, 인구학적 특성, 원인균, 항생제 감수성, 초기 항생제 사용 양상과 입원기간을 조사하였다. 결과 : 연구에 포함된 229명을 118명의 단순 신우신염군과 111명의 복잡 신우신염군으로 구분 하였다. 단수 신우신염의 평균 발생 연령은 38.2세와 복잡 신우신염 56.1세로 복잡 신우신염 환자의 연령이 유의하게 높았다(P<0.001). 양군 모두에서 원인균 중 E. coli의 분리율이 가장 높았으며 항생제 감수성 결과 ampicillin, trimethoprim-sulfame-thoxazole에는 높은 내성률을 보였고, ciprofloxacin, gentamicin, cefotaxime에 대한 감수성은 비교적 높았으나 복잡 신우신염의 경우 단순 신우신염에 비하여 ciprofloxacin, gentamicin에 대한 감수성이 다소 낮은 것을 확인할 수 있었다. 평균 입원 기간, 항생제 투여 기간에 있어서도 복잡 신우신염군에서 유의하게 길었다. 결과 : 본 연구의 결과 서울의 강서 지역에서 대학병원급에 치료 의뢰되는 단순 급성 신우신염의 치료에 있어 1차 항생제로 3세대 cephalosporin, aminoglycoside, quinolone 중 한가지를 초기 경험적 치료제로 사용을 고려하여야 할 것으로 사료된다. Background : The purpose of this study is to recommend the initial therapeutic regimen for adult patients with acute pyelonephritis (APN) according to the changes of antimicrobial susceptibility patterns of causative microorganisms isolated from patients with APN. Methods : We reviewed medical charts of 229 APN patients, who had been treated at Korea University Guro Hospital from 1st of January. 1999 to 31st of December, 2001. We investigated the demographic data, clinical findings, durations of hospital treatment, antimicrobial susceptibility patterns of the causative microorganisms and initial antibiotic regimens in patients with APN. Results : In this study, 229 adult patients with APN were classified into simple APN patients (118 patients, 51.5%) and complicated APN patients (111 patients, 48.4%). Mean age of patients with simple APN was 38.2±14.1 years old and that of patients with complicated APN was 56.1±14.9 years old. Mean age of patients with complicated APN was significantly higher than that of simple APN patients (P<0.0001). Escherichia coli was the most common microorganism both in simple APN (96.7%) group and in complicated APN (90.6%) group. Antimicrobial susceptibility of E. coli was at the low level of ampicillin (31%/20%) and trimethoprim-sulfamethoxazole (42.6%/34.2%) in each group. In contrast, ciprofloxacin (11.5%/22.7%), gentamicin (16.4%/22%) and cefotaxime (0%/8.2%) resistance remained at relatively lower level. In comparison of simple APN with complicated APN, ciprofloxacin and gentamicin resistances were higher in complicted APN group. Average duration of hospitalization (5.9±2.3 days/8.2±4.6 days) and duration of antibiotic use (12.1±3.9 days/15.3±10.0 days) were significantly longer in complicated APN. Conclusions: The results of this study suggests that 3rd cephalosporin, aminoglycoside or quinolone antibiotic would considered as one of the initial therapeutic regimen for patients with simple APN in southwestern Seoul.

Streptozotocin유도 당뇨병이 백서하악 절단과두 치유에 미치는 영향의 실험적 연구

황의환,이상래,홍정표,김원철 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.2

The purpose of this study was to investigate the remodeling process of the streptozotocin-induced diabetic rat's resected condyle. This experiment was performed with male Sprague-Dawly strain rats weighing approximately 250gm, which were rendered diabetic by an intravenous injection of streptozotocin(70 ㎎/㎏ body weight). After condylectomy, experimental rats were serially terminated on the 1st week, the 2nd week, the 3rd week, and the 4th week. The following termination, the mandibles were dissected out to make specimens. Each mandibular condyle was radiographed with Hitex HA-80(Hitex Co., Ltd. Japan). In addition to radiographic observation, the mandibular condyles, further decalcified and embedded in paraffin, were sectioned and stained with Hematoxylin and Eosin, Toluidine blue and Masson's trichrome. The were observed with a light microscope and a polarizing microscope. The results were as follows. 1.Soft X-ray radiograms revealed proliferation of bone after 1 week in both groups. Irregularly repaired bones and dense trabeculae were clearly observed in experimental group. 2.The resected condyles were repaired by intramembraneous and endochondral bone formation in both groups. 3.Bone tissue repair was initiated from the adjacent margin of resected bone, and cartilginous tissues were observed at the top of repaired one in both groups. 4.The number of osteoblasts of experimental group was small, compared with control group. Each osteoblast was small and flap. The thin trabeculae were irregularly formed. 5.Collagens of bone were gradually matured in both groups, but the degree of maturation was lower in experimental group. 6.Fibrous tissues covered the upper parts of repaired bone were densely arranged in the both groups. Conclusively, atrophied osteoblasts, immature collagen of bone, and this and irregular trabeculae which were characterized in the diabetes experimental group showed diabetes disturbed osteoblastic function and caused disturbance of remodeling process of bone.

예산정보시스템 (Budget Information System)구축에 관한 연구

황윤원,김성철,박기묵 大邱大學校 社會科學硏究所 2001 社會科學硏究 Vol.9 No.3

본 연구는 현재의 정부예산에 대한 정보망 구축은 어떻게 하는 것이 정부예산의 운영을 파악할 수 있는가에 대한 시스템구축안을 제시하고 향후의 추진방향에 대한 모색을 제시하려는 것이다. 구체적인 접근방법으로 현재 미국에 진행되는 예산정보시스템(U.S. BIS)을 기초로 하나의 모형을 개발하고 한국의 상황에 적용해 시스템개발에 도움을 주기 위함이다. 무엇보다 예산 전반의 흐름을 파악할 수 있는 정보망 확충에 초점을 두었다. 예산정보시스템(BIS)모형은 현재 중앙정부 예산에 대한 일반적 정보를 광범위하게 포함한 정보시스템이라고 볼 수 있다. 전통적 품목별 예산제도를 근간으로 하는 정부예산을 부호화하여 예산정보시스템를 개발하였다. 하지만, 이러한 접근방법은 예산지출과 수입에 대한 통제를 강화할 수 있고 정부행정의 투명성을 제고할 수는 있으나 통제에 치중된 예산시스템을 정보화하였기 때문에 정부사업이나 프로그램별로 비용과 성과에 따져서 효율성 제고를 할 것인가에 대해서 BIS을 통해 정보를 얻기에는 한계를 지니고 있다고 볼 수 있다.

청색광소자용 사파이어웨이퍼 표면 미세가공 변형특성 연구

황성원,김근주,서남섭 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

The sapphire wafers for blue light emitting devices were manufactured by the implementation of the surface machining technology based on micro-tribology. This process has been performed by grinding, lapping and polishing. The surfaces of sapphire wafers were mechanically affected by residual stress and surface default. This mechanical stress and strain can be cured by thermal annealing process. The sapphire crystalline wafers were annealed at 1100∼1400℃ and then characterized by double crystal X-ray diffraction. The sample showed good quality of crystalline wafer surface with full width at half maximum of 16 arcsec for the 4-hour heat-treatment at 1300℃.

색상 측정 기기를 이용한 복합레진 적층 수복과 단일 수복의 색상 비교 분석

송영상,김자현,이빈나,장지현,장훈상,황윤찬,오원만,황인남 大韓齒科保存學會 2012 Restorative Dentistry & Endodontics Vol.37 No.2

Objectives: This study analyzed the difference in color caused by different thickness in enamel layer of composite resins when applied with single and layering placement technique, and evaluated if the results agreed with the shade guide from the manufacturers to verify reliability of the color matching process of the manufacturers. Materials and Methods: For single composite resin samples, 6 mm diameter and 4 mm thickness cylindrical samples were fabricated using Ceram-X mono (DENTSPLY DeTrey) and CIE L*a*b* values were measured with spectrophotometer. Same process was done for layering compositie resin samples, making 3 dentinal shade samples, 4 mm thickness, for each shade using Ceram-X duo (DENTSPLY DeTrey) and enamel shade resins were layered in 2 mm thickness and CIE L*a*b* values were measured. These samples were ground to 0.2 mm thickness each time, and CIE L*a*b* values were measured to 1 mm thickness of enamel shade resin. Results: Color difference (△E*) between single and layering composite resin was 1.37 minimum and 10.53 maximum when layering thicknesses were between 1 mm and 2 mm and 6 out of 10 same shade groups suggested by manufacturer showed remarkable color difference at anythickness (△E* > 3.3). Conclusion: When using Ceram-X mono and duo for composite resin restoration, following the manufacturer's instructions for chossing the shade is not appropriate, and more accurate information for Ceram-X duo is needed on the variation and expression of the shades depending on the thickness of the enamel. (Restor Dent Endod 2012;37(2):84-89)

C. 프레네와 R. 꾸지네의 교육에 나타난 아동의 사회화 과정

황성원 建陽大學校 1999 建陽論叢 Vol.- No.7

이 논문의 목적은 프랑스의 교육자인 로제 꾸지네(Roger Cousinet)와 셀레스텡 프레네(Celestin Freinet)의 교육 이론과 실천을 비교 연구하는 데에 있다. 프랑스의 진보주의 교육을 대표하는 이들은 독특한 교육원칙에 따른 실천모형을 교육에 적용시키고자했던 교육 개혁론자였다. 장학사에서 출발하여 소르본느 대학 교수로 은퇴한 로제 꾸지네는 존 듀이의 영향을 받아 프랑스 학교 풍토에 맞는 소집간 학습을 창안했으며 열린교육의 실천을 통해 교육방법을 개혁하고자 하였다. 셀레스텡 프레네는 사회주의자이자 시골학교 교사로서 진보주의 교육이념에서 출발했지만 교육이념의 실천방안에 대해서 매우 회의적이었다. 그는 시골학교에 적합한 새로운 교육방법인 학교 인쇄소, 자유로운 글쓰기, 학교신문, 지역학교 간의 서신교환 등을 제시하면서 진보주의 교육을 비판적 관점에서 계승·발전시켰다. 이 논문에서 아동의 사회화는 비교의 중심 축을 형성하는 개념이다. 사회화는 꾸지네화 프레네에게 있어 교육의 목적이자 학교 생활의 수단이며, 그들의 교육 이론과 실천에서 매우 커다란 중요성을 차지한다. 꾸지네와 프레네의 교육을 비교하기 전에 우리는 우선 일반적 의미의 사회화 과정을 이론적으로 검토하였다. 사회화 과정을 정의하기 위해 문화인류학, 심리학, 사회학의 세 분야에서 접근하였다. 문화인류학에서는 사회화를 문화접변 현상(acculturation),심리학에서는 인격형성과정(personnalisation),사회학에서는 개별화 과정(individualisation)으로 보고 있다. 특히 학교를 통한 아동의 사회화 과정을 특징짓는 세 가지 과정을 각각 표현의 교육, 흥미의 교육, 책임감의 교육이라 하였다. 이 본문을 통한 연구 결과, 꾸지네가 주장한 사회화는 진보주의 교육의 원칙에 기반을 두고 있고 소집간 학습은 아동 개개인의 흥미에서 시작하여 흥미를 중심으로 하는 교육실천 방법이다. 그는 문화접변 현상, 인격형성 과정, 개별화 과정에서 인격형성 과정을 가장 중요시 여긴 반면, 프레네는 진보주의 교육이론에 근거를 두었으나 좀 더 급진적인 교육이념을 표방하였다. 학생들의 협동정신과 민주 시민교육을 우선시하고 그들에서 노작교육을 통한 참여의식을 불러일으키고자 했던 프레네 교육은 앞에서 분석한 세 과정중에서 개별화 과정을 가장 대표적이며 독자적인 사회화 과정으로 보고 있다. 결국, 꾸지네와 프레네는 동일한 교육이념에서 시작하여 서로 상이한 교육적 특성을 보여주었고, 아동의 사회 과정을 통하여 자기만의 독특한 학교교육 개혁 이론을 주장하고 실천하였다고 단정 지울 수 있겠다.

CNUOS subset으로서의 DOS program들의 Multitasking

황영원,김봉환,이광일,김상하 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.1

A number of softwares have been being developed under DOS on personal computer. CNUOS is a distributed system that is designed to provide the environment upon which application programs developed under heterogeneous operating systems including DOS can be executed simultaneously. Protection is necessary for reliable mutitasking and can be used to prevent tasks from interfering with each other. In this paper, we will introduce two modules as a subset of CNUOS: the protection module and the DOS emulation module which is able to support the multiprogramming of DOS programs.