현역 군인 발생을 중심으로 본 2000년도 국내 삼일열 말라리아 발생 현황

박재원,김영아,염준섭,유정식,양병국,채종일 대한감염학회 2001 감염 Vol.33 No.4

Background : Since 1997, the annual case occurrence of vivax malaria in the Republic of Korea have exceeded 1,000 cases since 1997. The military is thought to be an important source of the current outbreak. We collected various informations about malaria cases (soldiers, veterans and civilians) which occurred in 2000, and analyzed the characteristics of the current outbreak. Methods : Informations about malaria cases of soldiers, veterans and civilians, including name, age, sex, day of onset, region, etc., were collected through the National Institute of Health. Results : Out of total 4,141 cases, 1,288 (31.1%) occurred in the military, 1,273 (30.7%) occurred among the veterans, and 1,580 (38.2%) occurred among civilians. The monthly case occurrence reached its peak in early August. Areas such as Cheolwon, Yeoncheon and Paju showed the highest prevalence. Conclusion : It is considered that the current malaria outbreak has escaped from the exponential growth phase, however, more attention should be paid to prevent further spreading of malaria infection. (Korean J Infect Dis 33:280∼284, 2001)

農業資本의 配分과 農家財務管理의 評價指標에 관한 考察

朴鐘燮 충북대학교 농업과학기술연구소 1986 農業科學硏究 Vol.4 No.-

Aricultural credit can contribute to the improvement of net income of a farm business by helping to create an adequate size, increase efficiency, adjust to changing technology and prices, meet seasonal fluctuations in income and expenses, protect the farm adverse conditions through maintenance of a credit reserve, and provide business continuity. In recent years, technological revolution has brought about several significant changes in the structure of agriculture. The substitution of physical capital for labor and the increased use of purchased inputs has created a need for substantially more funds both in the aggregate and in a per farm basis. Over time, in spite of increasing fund demand, profit margins in agriculture have been declining steadily, so farmers have become in creasingly dependent on outside sources of fund. That has weighted interest burdens for farms. Specially, because the rate of interest charged on loans depends on following factors the lenders cost of fund; the default risk and market risk involved in the loans; loan serving costs; and inflation, which causes the real rate of interest to be less than the nomial rate the interest burdens of farms are very serious. Therefore in order to continue efficient farm management through agricultural capital formation, it is necessary that farms should increase productivity of agriculture and farm household savings. In addition, at the policy level, it is necessary to raise the rate of agricultural growth and real income within the agricultural sector to reduce the usurious farm liabilities.

政府支出과 租稅收入間 因果分析 : 오차수정모형의 응용

박종섭 충북대학교 농업과학기술연구소 1996 農業科學硏究 Vol.13 No.-

This paper applies cointegration and error-correction models to test the causal relation between government expenditures and tax revenues in Korea over the period 1953-1995. These econometric techniques have recently gained attention in empirical research not only for simplicity and relevance in analysing time-series data but also for ensuring stationary and providing additional channels through which Granger causality could emerge if two variables are cointegrated. We performed the unit root tests in levels and first differences. The levels of tax revenue and government expenditure variables are non-stationary, but the first differences of that variables are stationary indicating that these variables are in fact integrated of order one, I(1) . We performed Engle Granger cointegration tests by estimating the cointegrating equation in order to obtain the residuals used in the error-correction models. We are interesting to see what causes what, that is, the direction of causality between tax revenues and government expenditures. The empirical results obtained from the error-correction models indicate that causality runs from government expenditures to tax revenues. This is based on the significance of the error-correction coefficient, η. The results imply that higher government expenditures would lead to higher tax revenues.

발생원별에 따른 PAHs 배출특성

박찬구,윤중섭,김민영,손종열,모세영 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.3

The results of individual PAH source profiles that can be applied to receptor model are as follows. The sum of 16 PAH concentrations was 391.41 ng/S㎥ in a tunnel. Phenanthrene was the most abundant compound among 16 PAH, and then pyrene, fIuoranthene, anthracene, and naphthalene can be seen in elevated contents. 11,056.61 ng/S㎥ of 16 PAH concentrations in BC oil boiler was two times higher than 6,582.57 ng/S㎥ of those in LNG boiler. Naphthalene was the most abundant compound in both facilities. Phenanthrene, anthracene. and acenaphthylene were the second dominant compound group in order from both facilities. BC oil boiler had relatively high concentration of pyrene compared to LNG boiler that had high concentration of fluorene and did not detect pyrene. The sum of 16 PAH concentrations emitted from MSW incinerators after APCD (air pollution control device) was three times higher than those from MSW incinerators bcfore APCD. However, the concentrations of more than 4-ring PAH compounds (e.g., benzo (a)anthracene) before APCD were higher than those after APCD. This fact implies that PAHs generated by combustion process are eliminated in APCD and they are continuously produced in stack or atmosphere by PAHs precursors.

육우 햄에 대한 소비자 선호 분석

박종섭, 최양일, 공기서, 여순식 忠北大學校 農業科學硏究所 2012 農業科學硏究 Vol.28 No.3

The purpose of this study is to estimate the implicit prices and consumers’ preference by attributes on Korean beef cattle ham using choice experiments. Main attributes are the country of origin, non-antibiotic certification, HACCP certification, addition of Korean agricultural products and use of natural colors. The implicit prices of each attribute and level for country of origin are estimated as KRW 919.0 for Korean pork, KRW 2,173. for imported beef and KRW 5,232.9 for Korean cattle beef. The other estimated implicit prices are KRW1,762.9 for non-antibiotic certification, KRW 577.5 for HACCP certification, KRW 57.9 for addition of Korean agricultural products and finally, KRW 572.9 for use of natural colors. This study is expected to contribute to the decision-making process of Korean beef cattle farmers by providing useful quantitative information on attributes and price that are related to consumers’ preference on Korean beef cattle ham.

원적외선 면상발열체를 이용한 하우스 난방 시스템의 경제성 분석

박종섭,한충수 충북대학교 연초연구소 2006 煙草硏究 Vol.20 No.-

The results obtained from this study can be summarized as follows. 1) The result comparing the economical efficiency of far infrared heating system and gasoline-burned warm air heating system shows that in case of growing a currant tomato and a green perilla on the 60 Pyeong-sized green house respectively, negative farm incomes are earned for all crops, Comparing the far infrared heating system with gasoline-burned warm air heating system, the far infrared heating system is relatively favored in terms of high gross revenue and low energy cost. 2) From the perspective of heating energy costs on an annual basis, the gasoline-burned warm air heating system is higher than far infrared heating system by 152 % and 150 % for a currant tomato and a green perilla respectively. 3) The result analysing the economical efficiency of far infrared heating' system depending on different scenarios indicates that if the rural electrical rates are lowered by more than 10 % and the market price is increased by more than 20 %, the far infrared heating system is economically efficient for growing a currant tomato. And if the market price is increased by 40 % and the tax-free oil price is decreased by 15 %, the gasoline-burned warm air heating system is economically efficient for growing a green perilla.

제트베인형 추력편향장치의 공기역학적 특성

박종호,이성노,이은모,신완순,이택상,길경섭 충남대학교 공업교육연구소 2000 論文集 Vol.23 No.1

The aerodynamic study of jetvane type TVC(Thrust Vector Control) were conducted using supersonic cold-flow system. The use of TVC Systems in particular jet vanes, are currently being researched for use in air launch, ship launch, underwater launch and high altitude maneuvering of tactical missiles and rockets. The necessity to generate control forces to rapidly change the course of the missile is frequently required when traditional, exterior aerodynamic surfaces are unable to produce these forces, when the flow over the control surface is insufficient. This situation can occur at launch, or high angles of attack of the control surfaces. Jetvanes performed well at all altitudes and environmental conditions, and jet vanes are extremely effective at deflection angles up to as high as 30 degrees, make them ideal for the launch and maneuver applications. In this study, aerodynamic performance test of jetvane type TVC was conducted, and The effect of shape and deflection angle of various types of jetvanes are investigated

병원과 지역사회에서 메티실린 내성 황색 포도상구균(methicillin-resistant Staphylococcus aureus) 감염의 임상 분자역학 연구

박정원,이종섭,송준영,김철현,엄중식,정희진,김우주,박승철 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.2

목적 : 국내에서 1990년대 이후 중요한 병원균으로 대두되고 있는 methicillin-resistant S. ureus(MRSA)는 주로 입원환자에서만 분리되는 것으로 알려져 있으나, 최근들어 지역사회에서도 퍼져있는 것으로 알려지기 시작하였다. 이에 병원획득 및 지역사회획득 MRSA의 임상역학 및 분자역학적 연구를 통하여 획득요인, 병원과 지역사회 획득 균주간의 교류 양상등을 규명하고자 하였다. 방법 : 1998년 1월부터 12월까지 고려대 부속 구로병원에서 임상검체로부터 분리된 S. aureus 균주중에서 MRSA 균주의 빈도를 구하였고, 이중 1998년 10월 1개월 동안 분리되었던 42균주에 대하여 지역사회획득 균주와 병원획득 균주로 나누고, 임상역학적 조사를 하였다. 지역사회 획득 18주와 병원획득 22주에 대하여 PCR 방법으로 mecA 유전자를 확인하였고, PFGE를 시행하여 균주의 클론형(clonal type)을 결정하고 이 결과에 준하여 덴드로그램 분석을 시행하여 분자적 친밀도를 결정하였다. 결과 : 1998년 1년간 분리된 총 1,587주의 S. aeureus 균주중 73.8%(1,163주)가 MRSA 였다. 1998년 10월 1개월 동안 임상자료의 고찰이 가능하였던 MRSA 감염환자 42명 중 20명이 지역사회획득 환자였고, 병원획득 환자가 지역사회획득 환자보다 항생제사용 과거력(17 vs 5, p=0.001), 기저질환의 존재(18 vs 8, p=0.002) 등이 통계적으로 의미있게 높았다. 지역사회획득환자가 이루(7/20[35.0%] vs 2/22[9.1%] ; p=0.041)와 밀접한 관계가 있음도 확인하였다. 분자생물학적연구가 진행된 40주의 MRSA 균주는 모두 mecA 유전자 양성이었고, 18주의 지역사회획득 균주에서 총 8가지의 PFGE 클론형이 존재하였으며 A형이 가장 많았다(7/18, 38.8%). 22주의 병원획득균주에서는 6가지의 클론형이 존재하고 A형이 가장 많았으며(15/22, 68%), 15주의 지역사회획득 균주(83.3%)가 21주의 병원획득균주와 공통적인 클론형을 공유하고 있었다. 결론 : 지역사회 획득 MRSA는 주로 이루나 창상부위에서 많이 분리되는 반면 병원획득 MRSA는 객담에서 많이 분리되고 또한 당뇨병을 가진 환자에서 감염을 잘 일으키는 것으로 밝혀졌다. PFGE 분석 결과 원내감염은 단일균주에 의한 유행양상을 보였고, 지역사회에서도 같은 형의 균주에 의한 감염빈도가 가장 높음을 보여 MRSA 균주가 지역사회로 유입되어 지역사회내 MRSA 감염의 발생에 기여했을 것으로 사료된다. Background : Until recently, methicillin-resistant Staphylococcus aureus (MRSA) infection has been acquired primarily in hospital settings. During the late 1990s, the incidence of community-acquired MRSA infections has been increased in this university hospital. This retrospective study evaluated the clinical features and risk factors for community-acquired MRSA infection compared with hospital-acquired MRSA infection; and molecular relatedness of MRSA strains determined by pulsed-field gel electrophoresis(PFGE). Method: MRSA isolates collected from patients during October of 1998 were classified as community-acquired("community') or hospital-acquired("hospital") cases. MRSA infections were defined as hospital-acquired if organisms were isolated > 48 hours after admission to the hospital or isolated from patients with a history of admission to a hospital within the last 3 months. A comparative analysis of risk factors for community MRSA compared with hospital MRSA was performed. mecA gene PCR and PFGE of MRSA isolated was used as a tool of strain identification and molecular typing. Result : During one month, there were 42 patients with MRSA infection or colonization. Of 42 patients with MRSA isolates, 22(52%) were hospital cases and 20(48%) were community cases. Previous exposure to antibiotics(17 vs 5, p = 0.001) and presence of underlying diseases (18 vs 8, p = 0.002) were more common in hospital cases than in community cases. MRSA were more frequently isolated in otorrhea specimens from patients with otitis media in community cases compared with hospital cases. Of the 40 MRSA isolates subjected for PFGE typing, 18 were community isolates and 22 were hospital isolates. There were 8 distinct PFGE types among the 18 community isolates and type A was the most common clonal type (7/18, 38.8%). 22 hospital isolates were of 6 distinct PFGE types, and type A was dominant clonal type (15/22, 68%). PGFE subtyping indicated that 15(83.3%) of 18 community MRSA strains were clonally related with that of 21 hospital MRSA strains. Conclusion : Our results suggest that hospital MRSA strains may have disseminated in the community setting. PFGE subtyping support the finding that MRSA is circulating beyond nosocomial settings in the regional community.

煙草耕作의 構造改善과 經營合理化 方案

박종섭 충북대학교 농업과학기술연구소 1996 農業科學硏究 Vol.13 No.-

In Korea, leaf tobacco farming has been carried out principal role in agricultural production and management. However, the production of leaf tobacco has been faced with crisis in proportion as decreases of agricultural labor and opening of world tobacco market. Therefore, to strengthen the competitive power in price and quality, it is necessary that we should be improved agricultural structure through mechanization and cost reduction in leaf tobacco farming. The principal objective of this study is to find out the strategies of mechanization and the directions for rationalization of management in leaf tobacco farming. The results obtained from this study were summaryzed as follows. 1. Size of cultivation land per farm household in leaf tobacco farming has been rapidly enlarged in according as the decrease of farms. 2. The principal points of mechanization in leaf tobacco farming are to decrease machinery utilization cost, increase production, and save labor. To increase physical and economic efficiencies of machinery utilization in leaf tobacco farming, it is necessary to enlarge farm size through centralization of production districts. 3. The rising production cost of leaf tobacco was largely affected by exogenous factors. 4. According to calculation results, the substitution effect between machinery and labor cost was trivial. 5. Rising rate of real price of leaf tobacco by the KTGC's purchasing was higher than that of real production cost. 6. The alternatives of structural improvement in leaf tobacco farming were as follows.; (1) attainment of economy of scale through centralization of production districts (2) improvement of cultivation method to promote productivity (3) stable maintenance of leaf tobacco farmers. (4) transformation of price policy into cost reduction policy

포도 브랜드 자산의 가치창출 전략

박종섭 충북대학교 연초연구소 2008 煙草硏究 Vol.21 No.-

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