소유역에 대한 제 유출해석 모형의 비교에 관한 연구

강주복,정연태,강인식,김태희 부산대학교 1995 生産技術硏究所論文集 Vol.48 No.-

It is difficult to make an exact estimate of the peak discharge, the runoff depth of flood, and establish the proper measurement for the flood protection since the water stage or discharge has been rarely measured at medium or small river basin in Korea. Therefore, Runoff analyses were perfomed using the storage function method, the discrete, linear, input-output model and linear reservoir model, respectively. Various parameters for the study areas were determined. The calculated hydrographs by three methods showed good agreement with observed flood hydrographs. The capabilities of regenerating flood hydrographs were evaluated based on rainfall from the storage function parameters, the Ø-index method, and the constant percentage method. The storage function parameters provided better effective rainfall for regenerating flood hydrographs than any others considered in the study. 우리나라의 중소하천 유역 중 대부분은 수위나 유량 관측을 행하지 않은 미계측 유역으로 방치되어 있는 상태이므로, 홍수시 정확한 유출량의 추정, 홍수피해 경감을 위한 적절한 대책 수립 및 수공구조물의 건설에 필요한 계획홍수량의 산정 등이 극히 어려운 실정이다. 따라서 본 연구에서는 수영강유역을 대상으로 기존의 유출해석 모형 중 저류함수법, 선형 이산화 입력-출력 모형 및 선형저수지 모형을 채택하여 유출해석을 실시하고, 대상유역에 대한 각종 매개변수를 산정한다. 유출결과로부터 세가지 방법에 의한 계산수문곡선은 실측수문곡선과 잘 일치하였다. 또한 저류함수법 매개변수를 이용한 방법과 Ø-index법 및 일정비손실법 등의 유효강우량 산정방법에 따라 수문곡선의 재현능력을 평가하였다. 본 연구에서는 저류함수법 매개변수를 이용한 방법이 가장 양호한 재현결과를 나타내었다.

패션산업의 신속대응(Quick Response)시스템 도입현황 및 도입사례에 관한 연구

강희정,고은주 창원대학교 생활과학연구소 1997 생활과학연구 Vol.- No.1

Environmental changes (e.g., threat of imports, rivalry among existing competitiors) have increased the difficulties in operating an apparel business. To manage the environmental changes, Quick Response System (QRS) has been proposed. QRS is defined as a business strategy to speed up the information and product between business partners for maximizing consumer satisfaction by information technologies(e.g., EDI, Bar code) and partnership (Ko, 96, VICS, 1989). The purpose of this study are to review the current development of QRS(i.e., background, concepts, benefits, adoption problems), to analyze two cases (in Japan and Korean), and to suggest the future directions for the new adopters of QRS. The information from this study can be used when apparel companies do strategic planning and evaluate the adoption of QRS. Informed decision are critical when companies do make a decision for the best choice.

남자대학생의 흡연태도와 행동에 관한 연구

강경진,김정미,민혜영,안소진,오경숙,은경희,이현,이희선,홍주미,김수지 이화여자대학교 간호과학대학 2003 이화간호학회지 Vol.- No.37

There have been so many researches about problems of cigarettes and relation of smoking and heath since 1950's and generally known that smoking is one of the worst factor of increasing disease and mortality. No matter what such many proofs about various problems of smoking have been researched, smoking rate of current male collage students has not been decreased. Besides, most of the researches about cigarette use and its addiction have been focused on the adolescent or adult women smokers or adult male, not male collage student. Therefore, the subject of this study is about smoking attitude and smoking behavior of male collage students by general features. Smoking attitude was analyzed by modifying 'Guidelines for the content of tobacco smoking surveys of the general population'(WHO, 1982). Two hundred of male collage students participated to the distributed questionnaire for one week in May. The smoking attitude was categorized into duration of smoking and number of cigarette per day(CPD), and nicotine dependency, investigated by Fagerstrom Tolerance Questionnaire(FTQ) (Fagerstorm & Schneider, 1989). All statistics were performed by procedure of SAS according to number, percentage, mean, standard deviation, and ANOVA. The results are as follows: 1. Smoking attitude level was mean 25.73±5.15 marks, ranging from 13 to 39 marks of the total 40 marks. 2. Duration of cigarettes, number of cigarette per day, and nicotine dependency were mean 5.14±2.84 years, 12.88±6.85 pieces, and 4.78±1.69, respectively. 3. Smoking attitude showed significance according to general features such as marital state and allowance, but the significance according to marital state is not valuable because the numerical difference is so big between married one and single that they cannot be compared with each other. 4. Duration of smoking was significant according to general features such as age and allowance. 5. Smoking amount showed significance the factors of age only. 6. ll1ere was no significance in nicotine dependency according to general features. As a result, smoking attitude of male collage student in this study shows moderate level. Smoking attitude and duration is significant according to allowance, and smoking amount is significant according to age. Nicotine dependency according to general features is not significant but comparing with the preceding study about adult male, male collage students in this study are respectively more nicotine-dependent than adult male smokers. In conclusion, the right allowance usage strategies and effective heath education focused on the young are needed. In addition, helpful programs and information spreading strategies are necessary for establishing higher level of smoking attitude. At last, systemic regulations in daily living for ""anti-nico-dependent"" and perspective reforming of male university student are needed for reducing nicotine dependency.

재발성 일과성 허혈 발작을 주소로 내원한 비-안와-대뇌 모균증 1예

강우열,이주헌,성영희,최일수,송홍기,이병철 대한노인병학회 2002 대한노인병학회지 Vol.6 No.3

전자코를 이용한 마늘냄새의 감소 효과 분석

손주아,임채란,손희진,강진희,노봉수 서울여자대학교 자연과학연구소 2007 자연과학연구논문집 Vol.19 No.-

Ths effectiveness of reduction of garlic flavor in model solution was investigated using metal oxide sensor of electronic nose. After removing garlic sample (control) it was washed by milk or casein solution. The obtained data from electronic nose were analyzed by principal component analysis. Control Sample was separated from the treatment that was washed with 1, 3, 5% casein solution by first principal component score. There is no difference between 1% casein treatment and 3% casein one. Five percent casein solution was effectively differentiated from control. It means that casein (5%) might be bound with garlic flavor. One percent green tea was effective but it was done by washing rather than binding.

조혈모세포이식환자에서 조혈기능의 회복과 관련된 인자들에 관한 연구

정기주,강명수,권기두,김경하,이상철,김현정,배상병,김찬규,이남수,이규택,원종호,홍대식,박희숙 순천향대학교 의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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카르복시 폴리술폰 아이오노머의 기계적 성질

유지강,이용혁,김희석,김준섭,박기주,D. Nguyen,A. Eisenberg 조선대학교 생산기술연구소 1997 生産技術硏究 Vol.19 No.1

The dynamic mechanical properties of carboxylated polysulfone ionomers were studied by using DMTA. It was found that at 25 mol% of ions, the ionomer shows two glass transitions: one at ca. 200 ℃ and the other at ca. 235 ℃. It was also found that with increasing an ion content to ca. 37 mol%, a matrix T_(g) shifts to ca. 210 ℃, but a cluster T_(g) remains at the same temperature; however, the sizes of tan δ peaks for each transitions do not change with the ion content. This result means that even at those high ion contents, there is sufficient amount of a unclustered material in the samples, and the increase in the ion content does not increase the volume fraction of a cluster phase. In addition, the difference in two T_(g)s of this ionomer system was found to be ca. 40 ℃, which is smaller than that in poly(styrene-co-methacrylate) ionomer system. This finding implies that in the polysulfone ionomers weak ionic interactions in a multiplet resulting from steric hindrance due to the bulkiness of benzene ring to which the ionic group is attached and the tension on polymer chains surrounding the multiplet due to chain rigidity affect the size and stability of the multiplet significantly.

중학생의 동성애적 음란물 접촉정도와 동성애 혐오증 및 고정관념과의 관계

유주연;강문희 서울여자대학교 여성연구소 2004 여성연구논총 Vol.19 No.-

The purpose of the present study was to investigate the relationships among the contact frequency of homosexual lewd materials, homophobia, and prejudice against homosexuals of adolescents. A survey was carried out to 389 middle school students in Gyeonggi province. The brief summary of the survey is as follows. First, among 389 subjects the 73.0% had contacted homosexual lewd materials during the last 1 year, and more boys than girls contacted lewd materials. Most of the subjects had watched the internet sex movies. Movies, TV shows, the papers for adults, and sexual photos were also homosexual lewd materials that many of the subjects had watched. The kinds of materials that middle school students have contacted were different based on sex. Boys contacted the internet sex movies while girls contacted fanfic most. All of them had experience to watch movies and TV shows frequently. Second, the results of regression analysis revealed that the relationship between the contact frequency of homosexual lewd materials and homophobia did not show any statistically significant correlation. However, girls showed statistically significant negative correlation between the contact frequency of homosexual materials and homophobia. Third, the results of regression analysis indicated that the relationship between the contact frequency of homosexual lewd materials and prejudice against homosexuals showed statistically significant positive correlation.

스타이렌 아이오노머의 기계적인 성질에 미치는 혼합 양이온의 영향

김희석,나연화,이용혁,이법원,유지강,박기주,김준섭 조선대학교 생산기술연구소 1998 生産技術硏究 Vol.20 No.1

The styrene-co-methacrylate ionomers neutralized with Na +, Ba2 +, and mixed cation of both were prepared. The dynamic mechanical properties of two cation-containing ionomers were measured and compared to those of the ionomers neutralized with only one type of cations. We found that in the ionomers with one type of cations the difference in the type of cation does not change the glass transition temperatures. It was found, however, that the cluster Tg of the mixed cation ionomer is lower than that of the single cation ionomers. Thus it was postulated that in the two-cation system the two cations in a solution have sufficient dynamics to form new type of multiplet containing both cations, which may be slightly bigger than that found in the single cation multiplet. The mechanical properties also imply that the strength of ion interactions in the multiplets of the two cation ionomer is thought to be weaker than that of the one cation ionomers. These two effects are believed to contribute the lower in the cluster glass transition of mixed cation system.

멸치젓 숙성 중 N-nitrosamine의 생성

박희정,신정혜,강민정,성낙주 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.1

본 실험에서는 시판 젓갈류 중의 N-nitrosamine(NA)과 그 전구물질의 함량을 분석하였고, 식염 20%의 멸치젓을 제조하여 90일간 숙성시키면서 NA와 그 전구물질의 변화를 분석하였다. 시판 멸치젓(5점), 액젓(3점) 및 새우젓(2점) 중의 dimethylamine(DMA)은 32.7~361.1㎎/㎏, trimethylamine(TMA)은 흔적량~4.4㎎/㎏, 질산염과 아질산염은 각각 1.9~2.5㎎/㎏, 0.6~0.9㎎/㎏의 범위였다. NA는 N-nitrosodimethylamine(NDMA)만이 검출되었으며 1.9~10.1㎍/㎏의 범위였다. 멸치젓의 숙성 중 pH는 숙성 30일에 6.3으로 산성화되는 경향을 보이다가 그 이후부터는 거의 변화가 없었다. 또 염도는 숙성기간 동안 15.3~16.1%의 범위로 숙성기간에 따른 차이가 미미하였으며, 산도는 숙성 60일까지는 1.2%에서 1.4%로 다소간 증가하는 경향을 보이다가 그 이후부터는 거의 변화를 보잊 않았다. DMA는 숙성 30일까지는 완만한 증거를 보이다가 숙성 60일 후에 55.2㎎/㎏으로 급격히 증가하였고 TMA는 숙성 중 증가하다가 30일부터 현저히 감소하여 숙성 60일 이후에는 흔적량까지 감소하였다. 멸치젓 숙성 중 질산염은 생시료이 경우 1.5㎎/㎏였던 것이 숙성 60일 후에 4.3㎎/㎏으로 증가하였다가 점차 감소하는 경향을 보였으며, 아질산염은 생시료에서 0.6㎎/㎏이었으며 숙성 중 완만한 증가를 보였다. NA는 NDMA만 검출되었으며 생시료에서는 검출되지 않았으나 저장 20일 후에는 4.7㎍/㎏이었으며, 저장 90일까지 다소 증가하는 경향을 나타내었다. This study was attempted to analysis of N-nitrosamine(NA) and its precursors for elevating safety of fermented fish. Of the 10 samples marked, DMA, TMA, nitrate and nitrite contents were 32.7~361.1㎎/㎏, <0.1~4.4㎎/㎏, 1.9~2.5㎎/㎏ and 0.6~0.9㎎/㎏, respectively. NA was detected only N-nitrosodimethylamine(NDMA) and its levels were 1.9~10.1㎍/㎏. Anchovy sample after fermented for 90 days in our lab, dimethylamine(DMA) contents were slowly increased but, increased significantly to 55.2㎎/㎏ after 60 days of fermentation. Trimethylamine(TMA) contents were increased during fermentation and then drastically decreased after 30 days finally becoming a trace. Nitrate contents were transiently increased from 1.5㎎/㎏ in raw sample to 4.3㎎/㎏ after 60 days fermentation and then it is decreased gradually while nitrite content showed a slow increase rate from 0.6㎎/㎏ in raw sample during its fermentation. NA was not detected in raw sample but after 20 days of fermentation NDMA contents became 4.7㎍/㎏ and during 90 days fermentation it showed a slow increase rate.