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      • 地域間 情報隔差에 관한 硏究 : 서울과 濟州를 中心으로

        李聲,裵聖義,尹晙相 公州大學校 産業開發硏究所 1993 産業開發硏究 Vol.1 No.-

        The objectives of this study were to identify the regional information gap between seoul and Cheju region, and to present the direction for narrowing the regional information gap. Data were collected mainly by using available data and questionnaire. The numbers of questionnaire subject were 153 and 198 sampled from parents of one middle school respectably in Seoul and Cheju. The number of variables for comparison of information gap between two regions were 14. The major findings of this study were as follows; When the values of each variable of Seoul were 100, the values of each variable of Cheju were as follows; 1) The number of companies per 100,000 populations dealing with Computer Hard Ware and Soft Ware was ratewise 100 in Seoul 2.3 in Cheju, 2) the number of the enterprises per 100,000 populations engaged in information industry was ratewise 100 in Seoul 3.2 in Cheju, 3) the number of HITEL affiliaters and equipment was ratewise 100 in Seoul 25.1 in Cheju, 4) the number of postal matter receipients was ratewise 100 in Seoul 28.4 in Cheju, 5) the number of international communication use was ratewise 100 in Seoul 32.7 in Cheju, 6) the number of agencies per 100,000 populations in liason with information industry was ratewise 100 in Seoul 40.0 in Cheju, 7) the number of books in libraries per 100,000 populations was ratewise 100 in Seoul 63.6 in Cheju, 8) the status of PC-serve use was ratewise 100 in Seoul 74.9 in Cheju, 9) the amount of time in listening to the radio was ratewise 100 in Seoul 82.4 in Cheju, 10) the rate of taking in magazine was ratewise 100 in Seoul 87.5 in Cheju, 11) the population of telephone was ratewise 100 in Seoul 87.8 in Cheju, 12) the amount of time in watching TV was ratewise 100 in Seoul 88.2 in Cheju, 13) the amount of time in reading books and magazines was ratewise 100 in Seoul 89.8 in Cheju, 14) the rate of taking in newspaper which was higher than the rate of Seoul was 101.4 and, 15) the means of these variables which mean the information gap between Seoul and Cheju was ratewise 100 in Seoul 57.7 in Cheju, These direction presented here for narrowing the regional Information Gap Between are : (1) inducement of information industries and companie to remote area by giving prior administrative benefits and other services, (2) strengthened adults and continuing education program related to information conscience and technology, and (3) establishment of department of information science and technology at new or existing institutes of higher leaping in local area.

      • 二軸 對稱形 不規則 斷面 圖形에 대한 等角寫像 函數의 유도와 非熱源 熱傳導 解析에의 應用

        裵信徹,李俊昊 단국대학교 1987 論文集 Vol.21 No.-

        Generally it is very difficult to solve the equation of heat conduction analytically on regions with irregular configuration. So, these kinds of problems can be solved by numerical methods using computer. The representative numerical methods on heat conduction problem are F.D.M. and F.E.M. But these methods contain several important considerations such as C.P.U time and the number of segments and so on. If we know the mapping functions transforming irregular shapes into unit circle, we can overcome these difficult factors. In this paper, the mapping functions on three kinds of irregular shapes were derived and the Dirichlet problems of two dimensional heat conduction without heat source were solved by using them. Actually these conditions are very interesting in fields of unclear and heat treatment in industry. The derived mapping solutions are very simple forms containing fundamental functions such as Bessel and exponential functions. Specifically, at centers of shapes the value of zero order Bessel function of the 1st kind is 1 so that mapping solutions become only exponential functions. To verify the accuracy of this method, mapping solution on square shape was compared with exact and F.D.M solutions. The result showed that this was a good method to solve several non-analytic problems.

      • KCI등재

        Development of a Monitoring System for Water-borne Bacteria by a Molecular Technique, PCR-RELP-sequence Analysis

        이혜영,--,--,--,--,--,-- THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 2003 Journal of biomedical laboratory sciences Vol.9 No.3

        Since water borne infection causes acute diseases and results in spread of diseases by secondary infection, the prevention is very important. Therefore, it is necessary to have a method that is rapid and effective to monitor pathogenic bacteria in drinking water. In this study, we employed a systematic method, Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) analysis, to develop an effective monitoring system for possible bacterial contaminants in drinking water. For this purpose, PCR primers were derived from 992 bp region of the 16s rRNA gene that is highly conserved through the different species of prokaryotes. To test whether the PCR primers designed are indeed useful for detecting all the possible microbial contaminants in the water, the primers were used to amplify 16s rRNA regions of different microbial water-borne pathogens such as E. coli, Salmonella, Yersinia, Listeria, and Staphylococcus. As expected, all of tested microorganisms amplified expected size of PCR products indicating designed PCR primers for 16s rRNA indeed can be useful to amplify all different microbial water-borne pathogens in the water. Furthermore, to test whether these 16s rRNA based PCR primers can detect bacterial populations present in the water, water samples taken from diverse sources, such as river, tap, and sewage, were used for amplification. PCR products were for then subjected for cloning into a T-vector to generate a library containing 16s rRNA sequences from various bacteria. With cloned PCR products, RFLP analysis was done using PCR products digested with restriction enzyme such as Hae Ⅲ to obtain species-specific RFLP profiles. After PCR-RFLP, the bacterial clones which showed the same RFLP profiles were regarded as the same ones, and the clones which showed distinctive RFLP profiles were subsequently subjected for sequence analysis for species identification. By this PCR-RFLP analysis, we were able to reveal diverse populations of bacteria living in water. In brief, in unsterilized natural river water, over 60 different species of bacteria were found. On the other hand, no PCR products were detected in drinking tap-water. The results from this study clearly indicate that the PCR-RFLP-sequence analysis can be a useful method for monitoring diverse, perhaps pathogenic bacteria contaminated in water in a rapid fashion.

      • 송화분이 고지방 식이 섭취 흰쥐의 혈청과 간장에 미치는 영향

        이영주,박무희,황성원,배만종,한준표 대구효성가톨릭대학교 식품과학연구소 1994 식품과학지 Vol.6 No.-

        6주간 고지방식이를 섭취한 흰쥐에 있어 송화분과 탈지 송화분이 혈청과 간장에서의 지방 축적과 대사에 미치는 효과를 관찰하였다. 혈청에서의 total lipid, total cholesterol 농도는 고지방 식이군에 비해서 탈지 송화분과 송화분 투여군이 유의적으로 감소하였다. 혈청에서의 triglyceride 농도는 탈지 송화분과 송화분 투여군이 고지방 식이군과 비교했을 때 뚜렷한 감소를 보였으며, 이는 정상군과 비슷한 농도를 나타내었다. 혈당농도는 송화분, 탈지 송화분 투여군에서 유의성 있게 감소하였다. 간장을 조직학적으로 관찰한 결과, 고지방식이로 인한 조직의 지방 침착은 송화분 투여군에서 다소 억제함을 보였다. 이상의 결과를 미루어 볼 때 송화분은 동맥경화증 및 순환기계 질환의 예방과 치료에 효과적일 것으로 사료된다. Effect of pine pollen and defatted pine pollen on lipid accumulation and metabolism in serum and liver were investigated with rats fed high fat-supplemented diets for 6 weeks. Concentrations of total lipid and total cholesterol in serum significantly decreased in the experimental groups(treated with pine pollen and defatted pine pollen) compared with the control group. Concentration of triglyceride in serum was remarkably lower than that of control group. This was similar to that of normal group. Concentration of glucose in serum was significantly lower in the experimental group. It was observed from photographs of hepatic tissue in rats that pine pollen inhibits the lipid accumulation induced by high fat diets.

      • 치료 불응성 Still's병에서 자가 조혈모세포 채집시 사용된 G-CSF에 의한 급성 악화 1예

        이재웅,박성현,왕준광,오호석,최정혜,배상철,이영열,김인순,최일영,안명주 대한조혈모세포이식학회 2003 대한조혈모세포이식학회지 Vol.8 No.2

        치료 불응성 자가면역질환에서 고용량 항암화학요법 및 자가 조혈모세포이식술이 시행되고 있으나 조혈모세포 가동화 및 이식술 시 사용되는 G-CSF에 의해 오히려 기존의 자가면역질환의 증세가 악화되었다는 보고가 있다. 저자들은 만성적으로 재발되는 Still's병 환자에서 조혈모세포 가동화를 위해 사용한 G-CSF에 의해 자가면역질환이 급성 악화된 1예를 경험하였기에 보고하는 바이다. High-dose immunosuppressive therapy with autologous stem cell transplantation is an increasingly used treatment for severe refractory autoimmune disorder including multiple sclerosis, rheumatoid arthritis, juvenile chronic arthritis, systemic lupus erythematosus. Although the optimal method of collecting stem cell is not determined, G-CSF-based mobilization is generally considered safe. However, worsening of disease status was reported in autoimmune disease undergoing mobilization with G-CSF. We report a 24-year-old male with refractory Still's disease who developed acute disease flare after administration of G-CSF for stem cell mobilization.

      • KCI등재

        입원치료를 요하는 소아의 급성복증

        배택환,김준식,유인술,조준필,이철주,민영기 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

        The acute abdomen defined as an acute abdominal condition which needs immediate decision for treatment is one of the most common cause for emergency care. One thound six hundreds nine patients were visited to pediatric emergency center due to acute abdomen. To aid in early diagnosis and proper treatment, a clinical review was made on 278 cases of acute abdomen under 15 yrs old which admitted to Pediatrics and General surgery via emergency center from June of 1994 to May of 1995. The results as follows: It was 17.3% of total visiting to pediatric emergency center due to gastrointestinal sysmptoms. The sex ratio(Male: Female) was 2.35:1. Acute gastroenteristis was the most common acute abdominal condition(54%) and followed by acute appendicitis(17.9%), and intussusception(13.9%). The most common chief commplaint was vomiting(58%) and followed by abdominal pain(39.4%), diarrhea(35.8%), and fever(42.1%). One hundred fifty-five patients were visited to pediatric emergency center via local clinic and thirty patients via OPDs. The operations were done in 75 patients. Among them, immediate operation were done in 60 patients and delayed operations were done in 15 patients, but there is no difference in complication.

      • 유한요소법을 이용한 기둥형 로드셀의 비선형성 평가

        배준우,황재근,박경흠,양희준,이춘열 嶺南大學校 工業技術硏究所 2004 工業技術硏究所論文集 Vol.32 No.1

        Recently, force measurement systems are commonly used in many industrial fields and the precision of the measurement system is getting more important as the industry needs more precise tools and instruments to make high quality products. However, a high precision force measurement system is hard to make unless we know precisely the causes, quality and quantity of measurement errors in advance. In this work, many possible mechanical causes of measurement errors are reviewed including ratio of length to diameter of sensing part, radius of contact area, radius of bearing part, ratio of material properties and change of boundary conditions. Also, the measurement errors are analyzed by nonlinear finite element method and the nonlinear behavior of the errors are investigated. The results can be used to design force measurement systems and expected to be very useful especially for compact type load cells.

      • 형태학적 형태 분해 방법을 이용한 물체 인식에 관한 연구

        嚴景培,金準哲,李俊煥 全北大學校 1994 論文集 Vol.37 No.-

        Mathematical morphology based on the set theory has been applied to various areas in image processing. In this paper, we propose a new method for object recognition based on morphological shape decomposition. The first step of our method decomposes a binary shape into a union of simple binary shapes, and then a new tree structure is constructed which can represent simple binary shapes of objects. Finally, we obtain the feature informations from the tree structures and calculate matching scores using efficient matching measure. The experimental results of the proposed method show the good recognition rate.

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