고로슬래그시멘트를 사용한 다공성 황토콘크리트의 성능 평가

김황희,강수만,박종식,박상우,전지홍,이진형,차상선,박찬기,Kim, Hwang-Hee,Kang, Su-Man,Park, Jong-Sik,Park, Sang-Woo,Jeon, Ji-Hong,Lee, Jin-Hyung,Cha, Sang-Sun,Park, Chan-Gi 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

서브 미크론 반도체소자의 2차원 해석

황성범,박상정,홍창희 東亞大學校 附設 情報通信硏究所 1995 情報通信硏究所論文誌 Vol.3 No.1

A two dimension Monte Carlo program coupled with a program for solving Poisson's equation is used to perform a self-consistent simulation a quarter-micrometer-channel GaAs MESFET having a uniformly doped channel. for ?? and ??, the simulation yields ??, ??, ??, the current, transconductance, and cutoff frequency obtained from the Monte Carlo simulation are considerably larger than those obtained from the conventional 2D analysis. the reason for the high performance are discussed in terms of the electron dynamics.

원발성 두개강내종양 2,616례의 통계학적 연구(1976-1995)

황승균,정희원,오창완,양희진,남도현,이상형,정영섭,김동규,왕규창,한대희,최길수,조병규 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.7

大邱 앞山 附近에 環狀岩脈으로 産出되는 石英몬조니岩質 岩類에 對한 岩石學的인 硏究

黃尙九,金鉉埈,尹相敦,李淑姬 慶北大學校 自然科學大學 地質學科 地質學硏究會 1977 伏賢地質 Vol.- No.3

The thesis deals with petrogenesis relating to environmental changes through emplacement of quartz monzonitic dikes distributed in the Apsan area in vicinity of Daegu, Korea. These dike rocks belongto monzonite series in the mineralogical composition. and their textures are characterized by a wide range of change from porphyritic at the border to more equigranular at the center portion of the dikes. The quartz monzonitic rocks are occurred as ring dikes around quartz monzonite stock exposed in southern portion of the study area. Throgh the consideration of the textural characteristics and crystallization process of the dike rocks, it is supposed that coarse grained plagioclase phenocrysts (about 8㎜ in diameter) might be already grown as almost present size during stoping at deeper level before the stage of uprising as ring dikes, and intermediate (about 3㎜) and fine (about 1㎜) grained phenocrysts might be nucleated and polymerized during development of conical joint and uprising of magma through the joints. In the viewpoint of plagioclase composition, An-content of the plagioclase phenocrysts decreases from border to center portion on several traverses that cross the dikes in different area, which reflects that marginal phase might be emplaced earlier than the inner phase and that degree of reaction between residual magma and plagioclase increases toward center owing to increasing diffusion rate. The continuous uprising of magma might be also revealed by the fact that tendency of accumulation of phenocrysts in central portion by flow differentiation according to crystal dispersive power in the dikes is not visible in the area. Thus, textural characteristics and composition of plagioclase of the dike rocks in the area, could be contributed as some indicators clarifying the process and mechanism of emplacement and environment of solidification of magma, especially the fact according to the important geological event which represents beginning of jointing and formation of dikes.

성인의 연조직 측모 변화

황상희,성재현 대한치과교정학회 2000 대한치과교정학회지 Vol.30 No.1

한국인 성인에서 연령 증가에 따른 연조직 측모 변화 양상을 규명하기 위하여 남자 17명과 여자 8명을 대상으로 24세와 32세에 촬영된 측모 두부X-선 규격사진을 비교, 분석한 결과 다음과 같은 결론을 얻었다. 1.관찰 기간 동안, 남녀 모두 경조직에서는 통계적으로 유의한 변화가 없었다 (p〉0.05). 2.연조직의 전후적 계측치에서 남자는 턱부위 (Pog', Gn')의 유의한 증가를, 여자는 하순 (LI)의 유의한 감소를 관찰할 수 있었다 (p〈0.05) 3.연조직의 수직적 계측치에서 남녀 모두 상순의 길이 (Sn-Sto) 가 증가하는 경향을 보였으나 통계적 유의성은 남자에서만 나타났고 하안면 고경 (Sn-Gn') 은 남녀 모두에서 유의하게 증가하였다 (p〈0.05). 4.연조직 두께는 남녀 모두 전체적으로 증가하는 경향을 보였으며 특히 턱부위 (Pog', Gn')에서 유의한 증가가 있었다 (p〈0.05). The purpose of this study was to evaluate the soft-tissue profile changes from 24 to 32 years of age in Korean adults. The subjects used in this study consisted of 17 males and 8 females. The data obtained from the lateral cephalograms taken at age 24 and 32, were analyzed statistically. The obtained results were as follows : 1.During the observation period, there were no significant changes in the hard-tissue measurements in both sexes(p〉0.05). 2.In the anteroposterior measurements of soft-tissue, the males had significant Increase in chin area (Pog', Gn'), and the females had significant decrease in lower lip (LI) (p〈0.05). 3.In the vertical measurements of soft-tissue, bosh sexes showed the increased tendency in upper lip length (Sn-Sto) where the males showed significant increase (p〈0.05). The lower facial height (Sn-Gn') turned out significant increase in both sexes (p〈0.05). 4.In general, the females and males had the increased tendency in soft-tissue thickness, especially significant increase in chin area (Pog', Gn') (p〈0.05).

대구 유니버시아드대회 자원봉사활동에 대한 만족도 연구

황성동,성희자,고강호,전보경,권현수 慶北大學校 社會科學大學 2003 社會科學 Vol.15 No.-

영덕 달산 지역 화산층서와 용암의 공급지

황상구,함희수,김지영,정해오 안동대학교 기초과학연구소 1999 基礎科學 硏究論文集 Vol.10 No.1

We traced the flow direction of Ipbong Andesite and dacite in Dalsan area, Yeongdeok. Elongate vesicles and lathlike plagioclase phenocysts are aligned in the outcrops or under microscope. The lineations from their alignment are excellently indicating the flow direction of lavas. The flow directions, which were measured from the lineations in the Ipbong Andesite, are NNW-SSE in the eastern part and NNE-SSW in the southwestern part. The flow lineations show a fanlike movement pattern from the mid-northern part that the diorite is distributed. The diorite area is prabably a potential source area of the andesite

가정과 LT협동학습이 중학생의 학습태도 및 학업성취도에 미치는 효과

황순하,류상희 이화여자대학교 교과교육연구소 2004 교과교육학연구 Vol.8 No.3

본 연구는 LT협동학습이 중학교 가정과 교육에서 보이는 변화를 경험적으로 밝혀 보는 데 목적을 두었다. 이를 위해 다음과 같은 세 가지 연구문제를 가지고 수행하였다. 첫째, Learning Together 협동학습과 전통적 강의식 학습에 따라 중학생들의 학습태도는 어떠한 차이가 있는가? 둘째, Learning Together 협동학습과 전통적 강의식 학습에 따라 중학생들의 가정과 학업성취는 어떠한 차이가 있는가? 셋째,Learning Together 협동학습에 대한 중학생들의 인식은 어떠한가? 본 연구에는 중학교 2학년 4개 학급 남·여 학생 총 144명이 참여 하였다. 그 중 2개 반 72명은 실험집단으로, 2개 반 72명은 통제집단으로 구성하였고, 실험집단에는 협동학습의 LT모형을, 그리고 통제집단에는 전통적인 경쟁학습 방법을 적용하였다. 본 실험연구에서는 사전-사후 검사가 집단 사용되었다. 연구의 결과는 실험처치 후 수립된 사후검사점수를 대상으로 SPSS Win을 사용하여 통계 처리되었다. 본 연구를 통해 얻어진 주요 결과는 다음과 같다. 첫째, 협동학습의 LT모형 집단의 학습태도 사후검사 평균점수가 전통적 강의식 학습 집단에 비해 통계적으로 유의미한 수준에서 높게 나타났다. 둘째, 협동학습의 LT모형 집단의 학업성취 사후검사 평균점수가 경쟁학습 집단에 비해 의미 있게 높은 수준으로 나타났다. 셋째, Learning Together 협동학습을 받은 학생 집단의 협동학습에 대한 인식조사에서는 전통적 강의식 학습에 비해 수업에 적극적으로 참여할 수 있고, 토의하면서 공부하므로 이해가 잘되며, 지루하지 않고 흥미가 있다 등의 좋은 점이 있으나, 참여하는 사람만 참여하고, 수준별 능력차가 있어 서로에게 부담을 주며, 소란하고 분위기가 산만하다 등의 단점이 있었다. 전반적으로 볼 때 본 연구의 결과는 가정과 수업전략으로서 협동학습이 갖는 가능성을 보여주었다. 본 연구를 바탕으로 앞으로의 연구 과제를 제시하면 다음과 같다. 첫째, 중학교 가정과 교실에서 유사한 실험연구가 계속되어 가정과 협동학 습의 교육적 변화를 입증 할 수 있는 연구가 지속되어야 할 것이다. 둘째, 학생의 발달상황, 학생의 학업수준, 교육환경특성 등을 고려한 적합한 협동학습 모형의 검증이 필요하다. 셋째, 좁은 교실과 다인수 학급 등의 우리의 교육 여건에 맞는 협동학습 방안을 위한 포괄적이고 체계적인 연구가 필요하다. The purpose of this study was to investigate experimentally the educational effects of LT cooperative learning on learning attitude and academic achievement in middle school home economics classes. The major results of the study were as follows. First, According to students responses, cooperative learning allows more active participation and interesting. Second, the post-test average score on learning attitude of experimental group(LT cooperative learning group) appeared to be significantly higher than that of control group(traditional learning group). Third, the post-test average score on academic achievement of experimental group appeared to be significantly higher than that of the control group. Therefore, it could be said that cooperative learning has positive effect on promotion of students' learning attitude and academic achievement, and the results of this study support the possibility that cooperative learning has the potential as the alternative strategy for teaching middle school Home Economics Education.

선천성 피부 형성부전증 1례 보고

황성진,박혜림,김희석,김동철,김정헌 大韓成形外科學會 1994 Archives of Plastic Surgery Vol.21 No.2

Aplasia cutis congenita is a disorder of heterogeneous group characterized by isolate or multiple, localized or widespread areas of skin defect at birth. Since the first report by Cordon in 1767, it has been relatively rarely reported disorder abroad as well as domestically . It has several clinical subtypes classified by the location and pattern of skin absence, the presence of associated malformations and the mode of inheritance with unknown cause. We had a newborn male infant with this disorder clinically diagnosed, who showed wide full thickness skin defects on right knee and medial surface of ankle from birth, that covered with thin yellowish membrane and showed focal ulcerative area. On his familial history, there were four aplasia cutis congenita patients in the patient's mother in his maternal family side through four generations. Patient mother showed wide spread atrophic scarred looking appearance on her right lower leg. Chromosomal analysis revealed as normal male karyotype. The biopsy of lesions showed ulcerated surface and underlying chronic inflammation with total absence of epidermis. He had no associated congenital anomaly. The lesions healed rapidly for four weeks by conservative treatment as moist wound dressing and systemic antibiotic administrations. As a relatively uncommon skin anomaly, one case of aplasia cutis congenita is reported with review of references.

대학생의 운동과 스포츠 장애에 관한 연구

황향희,이상진,부기원 강원대학교 체육과학연구소 2000 江原大學校附設體育科學硏究所論文集 Vol.- No.23

The purpose of this study was to survey and analyze the response of college students on the barriers to exercise and sport with 1,000 students(female : 500, male :500) on the Chunchon city in Kangwon province were answered by the questionnaire. Analyse of the data with 732(female:374, male:358) for the evaluation of the questionnaire can be acquired the more basis materials of sports environment for the university students. As result, we have the conclusion as follow. 1.There are no difference(P> .05) in their sex and factor of sport barriers, but there is a different(P <.001) between the factors of sport barriers. 2.Their major and factor of sport barriers weren't a difference, but there is a difference<P <.01) between the factors of sport barriers. 3.Whether they was a member of exercise group or not and factor of sport barriers. There is no significant differences according to whether they was a member of exercise group or not level at P> .05, but there is a difference(P <.001) between the factors of sport barriers. 4.In their grade and factor of sport barriers, there is a meaningful difference level at P <.01, but there is no difference between the factors of sport barriers level at P <.001. Group of 2d, 3d, 4th more disturbed than average in order of barriers of resources, club, and program, but the reflection of 1st grade;s group in order to barriers of resources, program, club, and satisfaction at the program. Approximately, 1st grade's reflection seemed level at average. 5.As a result of the analysis of variance that their sex, major, whether they was a member of exercise group or not, grade and the factors of sport barriers. Generally, they were so many disturbed by barriers of resources, and then they showed strong rejection symptoms toward high price they should pay for using exercise facilities. The college student's exercise and sports activities weren't disturbed by their health. In addition, there is no significant difference in the effect of interaction that in their sex, major, whether they was a member of exercise group or not, grade and the factors of sport barriers.