都市 및 農村의 腸內 寄生蟲 感染에 關한 比較硏究 : 光州市 및 羅州郡 鳳凰面 地域을 中心으로

文宰奎,金宗中,文正錫,鄭駐炫 조선대학교 1981 The Medical Journal of Chosun University Vol.6 No.-

From the 1st of March to the 30th of April, 1979, this study on intestinal helminthic infections was carried ont on thc inhabitants, in Gwang-ju City and thc Bong-hwang Myun, Na-ju Gun area. The methods employed were Kato's cellophane thick smear technique in 603 cases (Gwang-ju City : 310, Bong-hwang Myun : 293) for the prevalence rate of various intestinal helminths ; the Scotch tape anal swab techniquu in 459 cases (Gwang-ju City : 223, Bong-hwang Myun : 236) for the prevalence rate of Enterobius vermicularis and Stoll's dilution egg-counting technique in all positive cases for the evaluation of the worm burden of some helminths. The results are as follows : 1. The positive rate of intestinal helminths of any kin was 80.1%(male: 75.0%, female : 85.1%) in Gwang-ju City ahd 92.6% (male : 90.6%, female : 94.5%) in the Bong-hwang Myun area by the cellophane thick smear technique. 2. The prevalence rate of Ascaris lumbricoides was 48.7% (male : 43.4:%, female : 52.9%, in Gwanag-ju City and 52.6%(rnale : 63.3%, female : 42.9%)in the Bong-hwang Myun area. 3. The prevalenec rate of Trichuris trichiura was 66.5%(male : 58.8%, female : 74.1%) in Gwang-ju City and 72.6%(male : 69.8%, female : 75.3%)in the Bong-hwang Myun. The highest prevalence rateamong helminths was in this area. 4. The prevalence rate of hookworm was 5.0%(male : 3.7%, female : 6.3%) in Gwang-ju City and 9.6%(male : 7.2%, female : 11.7%) in the Bong-hwang Myun area. 5. The prevalcncc raLe of Trichostrongylus orientalis was 4.8%(male : 4.4%., female : 5.2%) in Gwang-ju City and 6.2%(male : 7.2%, female : 5.2%) in the Bong-hwang Myun area. 6. The prevalence tate of Clonorchis sinensis was 1.4% (male : 2.2%, female : 0.6%.) in Gwang-ju City and 2.4%(male : 4.3%, female : 0.4%) in the Bong-hwang Myun area. It is higher in males than in femaless in the surveyed areas. 7. Taenia spp. was not foun in Gwang-.ju City and only 2 cases were found in the Bong-hwang Myun area. 8. The prevalence rate of Enterobious vermicularis was 29.1 %(male : 29.3%, female : 28.9%) in Gwang jn City and 31.3% (male : 29.5%, female : 33.1%) in the Bong-hwang Myun area by the Scotch tape anal technique. 9. The mean E.P.G. in Gwang-ju City be Stoll's dilution egg-counting technique was Ascaris lumbricoidis : 6,465 ; Trichuris trichiura : 600 : Hookworm : 392 ; Trichostrongylus orientalis : 256; and Clonorchis sinesis : 741. 10. The mean E.P.G. in the Bonag-hwang Myun area by the Stoll's dilution egg-counting technique wa s Ascaris lumbricoides : 7,231; Trichuris trichiura : 820 ; Hookworm : 592 ; Trichostrongylus orientalis : 341; and Clonorchis sinensis : 10,851.

선물환시장을 이용한 환위험관리 : 이변량 ECT-ARCH(1)모형을 중심으로

문규현,-- 한국금융학회 2003 金融學會誌 Vol.8 No.2

본 연구에서는 국내선물환(Forwards)을 이용한 원·달러현물환율 변동위험에 대한 헤지성과를 분석하였으며 주요 연구결과는 다음과 같다. 첫째, 최적헤지비율 추정결과, 최소분산헤지비율 및 이변량 ECT-ARCH(1) 모형 모두 기간이 짧은 원·달러선물환율들의 헤지비율이 기간이 긴 원·달러선물환율을 이용한 헤지비율보다는 상대적으로 높은 것으로 나타났으며, 시간변동최적헤지모형이 최소분산 헤지모형이 헤지비율보다 상대적으로 높은 것으로 나타났다. 둘째, 헤지모형별 헤지성과 분석결과에 의하면, 내표본(within-sample) 및 외표본(out-of-sample)기간 모두 헤지비율이 시간이 경과함에 따라 변화하는 이변량 ECT-ARCH(1) 모형 및 이변량 ARCH(1)의 헤지성과가 단순헤지모형과 헤지비율이 일정한 것으로 가정하는 전통적 헤지모형인 최소분산헤지모형(minimum variance hedging model)보다 상대적으로 더 나은 것으로 나타났다. 셋째, 각 기간별 원·달러선물환의 헤지성과 분석 결과, 환율변동에 따른 원·달러 현물가격변동 위험을 헤지하기 위해서는 장기적인 원·달러선물환보다는 단기 선물환율을 이용한 헤지성과가 상대적으로 더 나은 것으로 나타났다. 따라서 우리나라 원·달러외환시장의 경우 단순헤지모형과 전통적인 최소분산헤지모형보다는 시간변동 최적헤지모형을 이용하는 것이 더 바람직한 헤지성과를 얻을 수 있으며, 장기보다는 3개월 미만의 단기선물환을 이용하는 것이 상대적으로 나은 결과를 보였다. This paper studies hedging strategies that use the Won-dollar forwards to hedge the price risk of the Won-dollar exchange rate. This study uses the minimum variance hedge model and bivariate ECT-ARCH (1,1) model as hedge models, and analyzes their hedge performances. The sample period covers from March 1, 2002 to March 31, 2003 with 7 sub-samples such as 1week, 1month, 3months, 6months, 9months, and 1year. The most important findings may be summarized as follows. First, the hedge ratios of short periods in 3months are relatively higher than those of long periods above 3months. Hedge ratios of the ECT-ARCH (1) tend to be higher than those of risk-minimization model. Second, for both the in-sample data and the out-sample, hedging effectiveness of ARCH (1) and ECT-ARCH (1) model is higher than that of the risk-minimization with constant hedge ratios. Third, the hedge effectiveness of short periods consistently tend to be higher than that of long periods. In conclusion, investors are encouraged to use the time varying hedge models like ARCH, ECT-ARCH model rather than simple risk-minimization model to hedge Won-dollar exchange rate with short periods forwards within 3months.

노인외상환자의 예후 인자

문철규,전정민,최성혁,문준동,이성우,홍윤식 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

Background: It has been documented that certain prognostic factors may affect the outcomes of the old aged victims by trauma. Considering that trauma is the sixth most common cause of death in people over the age of 65 years and there is a rapid growth of elderly population, it is paramount to understand the prognostic factors when dealing with geriatric trauma patients. Hypothesis and Goals: It can be hypothesized that the prognostic factors should be determined independently between populations being consisted of different races, countries, socio-economic states, cultures, or so on. Thus, the study was designed to evaluate the factors affecting the outcomes of elderly Korean trauma patients. Methods: One hundred forty six patients aged over 65 years were retrospectively reviewed, who visited the Emergency Center of Korea University from January, 1997 to June, 1998. Of 146 patients, 7 were excluded due to discharge against advice or transfer to the other hospitals. Parameters analyzed were age, sex, mechanism of injuries, body region injured, Injury Severity Score (ISS), previous medical illness, hospital morbidity, duration of hospital stay, and cost. Each patient was classified into improved or not-improved group depending on the outcomes, and young-old or old-old group depending on the age. The factors affecting the hospital stay in improved patients were analyzed in the parameters of previous medical illness, hospital morbidity, multiple injuries, ISS, and age. All statistical tests were conducted with two-tailed levels of 0.05. Results: Of 139 patients, the mean age was 74±7.1 years, mean ISS 9.3±7.26, mean hospital stay 27±27.1 days. Most commonly injured body region was the extremities due to fall from a level surface. Rate of previous illness showed 0.94 medical diseases per person and were aggravated after trauma in 39 patients (60.9%). Hospital morbidity rate was 0.46 incidents per person. There were no differences in age and duration of hospital stay between the improved and the not-improved group. Substantial differences were noted in affected body region, incidence of previous illness, and hospital morbidity between the groups (p=NS). Not-improved group had higher ISS(p<0.05). ISS, previous illness and hospital morbidity affected the duration of hospital stay in the improved group. Hospital stay was 40±25.1 days in patients with ISS over 6 while 6±8.6 days in those with ISS 5(p<0.05). Hospital stay in the improved was 26±26.9 days while 31±24.8 days in the improved old-old group (p=NS). Hospital stay in the young-old minor trauma (ISS5) patients with previous illness and hospital morbidity was 26±10.1 days while 4±7.3 days in those without previous illness and hospital morbidity (p<0.05). Conclusion: Previous medical illness and hospital morbidity, not age, are predictive of outcomes of geriatric trauma patients with respect to hospital stay. As most of the hospital morbidity was a trauma-induced aggravation of previous medical illness and hospital morbidity contributing poor outcomes can be potentially avoidable, routine aggressive care for the geriatric trauma patients with previous medical illnesses is needed.

점성토(c-Ф 흙)로 뒤채움된 중력식 옹벽에서 인장규열을 고려한 수평토압 : 배수해석

정성교,남선우,김문규,오병수 東亞大學校 建設技術硏究所 1997 硏究論文集 Vol.21 No.2

Coulomb’s theory has been usually used in practice for design of retaining walls. This theory assumed that the lateral earth pressure was a triangular distribution, because the point of applying the thrust could not be abtained straightforward. However, the results of laboratory and filed tests proved that the lateral earth pressure was not a triangular distribution. In this study, for gravity walls with inclined backface, backfilled by c - ø soils with inclined surface, an analytical method for earth pressure has been derived. This method applied the flat arching concept and the Coulomb’s wedge, under drained condition, for the cases of considering tension crack. In addition, this paper is dealt with comparing the new analytical solution with existed theories for some cases.

점성토(c-ø흙)로 뒤채움된 중력식 옹벽에서 인장균열을 고려한 수평토압 : 배수해석 Drained Analysis

정성교,남선우,김문규,오병수 동아대학교 건설기술연구소 1998 硏究報告 Vol.22 No.1

Coulomb's theory has been usually used in practice for design of retaining walls. This theory assumed that the lateral earth pressure was a triangular distribution, because the point of applying the thrust could not be abtained straightforward. However, the results of laboratory and filed tests proved that the lateral earth pressure was not a triangular distribution. In this study, for gravity walls with inclined backface, backfilled by c-ø soils with inclined surface, an analytical method for earth pressure has been derived. This method applied the flat arching concept and the Coulomb's wedge, under drained condition, for the cases of considering tension crack. In addition, this paper is dealt with comparing the new analytical solution with existed theories for some cases.

진양호 유입수의 홍수기 오염부하 및 수질특성

김영충,서규태,문병현,이택순 7개 국립대학교 환경연구 논문집 공동발행 위원회 2001 환경연구논문집 Vol.1 No.1

This study is to evaluate the characteristics of pollution load into lake Jinyang by flooding. Water quality of Kyongho and Duckcheon river, which are major tributary of lake Jinyang, was analyzed during rainy season. Increased pollution load was observed at initial stage of rainfall. This was caused by pollutants washed out of non-point sources at initial run off. It was considerable that much higher pollution load was measured during the flood than the value calculated using loading rate.

저항 스폿 용접 시스템의 고성능 전력 제어

서문준,김규식,김재문,원충연 성균관대학교 1997 학술회의지원논문목록집 Vol.1997 No.-

In this paper, we attempt to control the nonlinear power control system for resistance spot welders to be a fully linearized system by applying the recently developed nonlinear feedback linearization techniques based on differential geometry theories. The controller in this paper is computationally simple. In additionm the easy gain tuning as well as the high dunamic performance of resistance spot welding systems can be obtained. To illumunate the performance of our controller further we present some simulation results.

Overexpression of the (<i>R</i>)-Specific Enoyl-CoA Hydratase Gene from <i>Pseudomonas chlororaphis</i> HS21 in <i>Pseudomonas</i> Strains for the Biosynthesis of Polyhydroxyalkanoates of Altered Monomer Composition

CHUNG, Moon Gyu,RHEE, Young Ha Japan Society for Bioscience, Biotechnology, and A 2012 Bioscience, biotechnology, and biochemistry Vol.76 No.3

<P>The (<I>R</I>)-specific enoyl-CoA hydratase gene (<I>phaJ</I><SUB>HS21</SUB>) from <I>Pseudomonas chlororaphis</I> HS21 was overexpressed in various <I>Pseudomonas</I> strains, alone and in combination with the polyhydroxyalkanoate synthase gene (<I>phaC</I><SUB>HS21</SUB>), for the biosynthesis of polyhydroxyalkanoates (PHAs) of altered monomer composition. Recombinant <I>Pseudomonas</I> strains harboring <I>phaC</I><SUB>HS21</SUB> and <I>phaJ</I><SUB>HS21</SUB> generated saturated and unsaturated monomers of C12–C14 in their PHAs. In particular, the level of the 3-hydroxytetradecenoate monomer in recombinant <I>P. chlororaphis</I> HS21 increased by approximately 260%. PhaJ<SUB>HS21</SUB> is expected to be useful in the biosynthesis of PHAs consisting of unusual monomer units.</P>

Metabolic engineering for the production of tailor-made polyhydroxyalkanoates

Moon Gyu Chung,Young Ha Rhee 충남대학교 생물공학연구소 2011 생물공학연구지 Vol.17 No.-

포스터발표 : 하폐수처리 ; 유지분해 미생물의 분리 및 오수처리에의 적용

정문규 ( Moon Gyu Chung ),이현규 ( Hyun Kyu Lee ),배선진 ( Sun Jin Bae ),강호 ( Ho Kang ),이영하 ( Young Ha Rhee ) 대한상하수도학회 2004 공동춘계 학술발표회 논문집 Vol.2004 No.-