http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이태우,심재국 한국미생물학회 1983 미생물학회지 Vol.21 No.2
The number of aerobic free-living nitrogen fixation bacteria and factors in soil at different stands covered with Pinus rigida, Quercus acutissima and Zoysia japonica in Cheongju area were investigated from Feb. to Sept 1981. 1. The numbers of $N_2-fixation$ bacteria, according to the seasonal changes, increased gradually from winter to spring and summer. But the growth pattern revealed some differences in accordance with plant cover stands : the numbers increased abruptly in May at Pinus, May-June at Quercus and Apr. May at Zoysia stand. The pick of numbers represented in Aug. Sept, at Pinus, Jul-Aug. at Quercus and May-Jun. at Zoysia stand, respectively. 2. The interrelationship between the monthly changes of enviotnmental factors and numbers of $N_2-fixation$ bacteria at different stands, mainly depends upon the soil temperature than other soil factors (r=0.71-0.84). The numbers of $N_2-fixation$ bacteria may increase 5-7 times according to increase $10^{\circ}C$ of soil temperature, and optimal range was $20{\sim}30^{\circ}C$ for growth. Equation of the interrelation between soil temperature and numbers could be stated as follows : log y=ax+b. 3. In the case of high soil temperature, the bacterial numbers presented high level in drought periods. Therefore, the $N_2-fixation$ bacterial species in these soil seem to consist of resistant to desication. 4. The influence of soil organic matter for growth of $N_2-fixation$ bacteria indicated low conrelation. The reason may seen the content of organic matter in these soil existed abundantly above the quantities of limitation for growth. 5. In artifical gradients, the $N_2-fixation$ bacteria were predominated at $20{\sim}30^{\circ}C$ same as natural condition, pH7-8, and 20-30% of soil water contents. 6. The vertical distribution of bacteria marked decreasing trends from surface to lower layers, and the decreasing degree was shown well in Zoysia, Quercus and Pinus stand in order. But in the trees, the numbers increased at 30cm layer estimated the region of root than 20cm layer. 7. Both catalase megative and positive group of $N_2-fixation$ bacteria in soil increased according to the rise of the soil temperature. Catalase positive group was revealed as dominant group in winter, and catalase negative group revealed in summer. The change of dominant pattern was shown during Feb. to Apr.
급성 복통을 주소로 한 소아장간막 림프절증: 초음파 소견과 임상증상과의 상관관계
이태우 대한영상의학회 1995 대한영상의학회지 Vol.33 No.4
Purpose : The correlation between sonographic findings and clinical symptoms was investigated in the patientswith mesenteric lymphadenitis who had recurrent acute abdomen. Materials and Methods : Seventy-eight childrenswith recurrent acute abdominal pain without obvious primary disease were evaluated by sonography. The initial andfollow-up sonography were performed in 17 children. The abdomen was divided into 3 areas. The number and size ofmesenteric lymph nodes were observed in each zone, and was compared with the clinical findings. Results : In56(71.8%) of 78 cases, good correlation was seen in the area of the greatest size and number of the lymph nodes inthe sonography. Most severe symptom, was seen in the right lumbar area(49 cases) and umbilical area(7 cases). In17 cases of follow up, 14 cases showed decreased size and number of mesenteric lymph nodes while 2 cases shpwedincrease in size and number of the nodes with aggravated symptoms. Conclusions : Ultrasonography was useful todetect and localize the enlarged mesenteric lymph nodes. Initial and follow-up sonography showed good correlationbetween the changes in number and size of the lymph nodes and symptoms.
윤리의식과 조직시민행동 간 공직동기의 매개효과에 대한 실증분석: 부산 소재 구청의 지방공무원을 대상으로
이태우 한국지방정부학회 2020 한국지방정부학회 학술대회자료집 Vol.2020 No.8
인구특성인 성별, 연령, 직급, 근속년수를 통제변수로 하여 회귀분석을 한 결과 윤리의식은 공직동기에 유의미한 영향을 미치고 윤리의식은 조직시민행동에 유의미한 영향을 미치고 공직동기는 조직시민행동에 유의미한 영향을 미쳤다. 이러한 회귀분석을 기초로 하여 실시된 3단계 매개회귀분석을 통해서 공직동기와 구성차원들이 매개변수로서 부분매개 역할을 하는 것이 입증되었으며 Sobel 검정을 한 결과 공직동기가 갖는 매개효과의 유의성이 확인되었다. 조직시민행동에 대한 관계에서 공직동기는 윤리의식과는 영향력을 부분적으로 공유하는 불가분의 매개적 관련성을 갖고 있다. 그러므로 조직시민행동을 높여 조직효과성을 확보하려는 전략에서 공직동기는 윤리의식을 대신하는 보완적 대안 정책수단으로 사용할 수가 있다.
Cu-TiB<sub>2</sub> 복합재료의 마모거동에 따른 미세조직 관찰
이태우,강계명,Lee, Tae-Woo,Kang, Kae-Myung 한국재료학회 2006 한국재료학회지 Vol.16 No.8
The dispersion hardened $Cu-TiB_2$ composites are a promising candidate for applications as electrical contact materials. The $Cu-TiB_2$ composites for electrical contact materials can reduce material cost and resource consumption caused by wear, due to their good mechanical and electrical properties. In this study, we investigated the wear phenomenon for $Cu-TiB_2$ composites fabricated with hot extrusion, by varying particle sizes and volume fractions of $TiB_2$. The wear tests were performed under the dry sliding condition with a fixed total sliding distance of 40 m. The contact loads at a constant speed of 3.5 Hz were 20, 40, 60, and 80 N. The friction coefficients and wear losses were measured during wear tests. Worn surfaces and wear debris after wear tests were investigated using the scanning electron microscope and the optical microscope. The microstructures of interface between Cu matrix and $TiB_2$ particle before and after wear tests were studied by the transmission electron microscope.
지역성을 고려한 시도별 재해예방사업비 배분기준에 대한 연구
이태우,주홍준,김재광,임지온,김수전,김형수 한국방재학회 2019 한국방재학회논문집 Vol.19 No.6
Damages due to natural disasters have been occurring every year, and the Ministry of the Interior and Safety (MOIS) in Korea is forging ahead with disaster prevention projects to prevent damage from natural disasters. However, the basis of the criteria for allocation of the budget for disaster prevention projects by administrative districts, as well as the efficiency of such allocations, is ambiguous. Therefore, this study presents assessment items and allocation plans for the allocation of city and provincial disaster prevention project budgets. From the perspective of efficiency and regional equity, indicators were presented to assess the willingness of local governments to conduct disaster prevention projects while considering their financial capabilities. It also proposed a method for allocating budgets for disaster prevention projects by metropolitan city and provincial governments in at-risk districts that can reflect their priorities in investment in maintenance projects. Through this method, it is expected that budgets for disaster prevention project will be allocated first to areas of preferential investments. 최근 자연재난으로 인한 피해는 매년 발생하고 있으며, 이에 행정안전부에서는 자연재해에 의한 피해를 예방하기 위하여 재해예방사업을 추진하고 있다. 그러나 재해예방사업 예산의 지역별 배분을 위한 기준의 근거 및 효율성 모호하다. 따라서 본 연구에서는 시⋅도별 재해예방사업비 배분기준을 위한 평가항목 및 배분안을 제시한다. 효율성 및 지역별 형평성을 고려하기 위해 지방자치단체의 재정능력을 고려한 재해예방사업 추진의지를 평가하는 지표를 제시하였다. 또한 자연재해위험 개선지구의 정비사업 투자우선순위를 반영할 수 있는 시⋅도별 재해예방사업비 배분방안을 제시하였다. 이러한 배분방안을 통해 투자가 우선적으로 이루어져야할 지역에 재해예방사업 예산이 우선적으로 배분될 수 있을 것으로 기대된다.