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      • KCI등재

        북한 고등중학교 「지리」 교과서 분석 연구

        최석진,남상준,류재명,손용택,이동엽 한국사회과교육연구회 2000 사회과교육 Vol.- No.33

        이 연구는 남북한 통일을 대비하여 북한 고등중학교 지리 교육과정 및 교과서를 비교·분석한 것이다. 남북한의 학제와 지리과 영역의 교육과정상의 위치가 다르고 북한의 교육과정을 입수할 수 없었기 때문에, 입수한 북한의 고등중학교 1학년부터 5학년의 지리교과서 5종(1991년도부터 1993년도 발행분)을 대상으로 분석하여, 남한 6차 교육과정의 중학교 사회와 고등학교 공통사회(한국지리) 및 세계지리 내용을 비교 분석하였다. 연구 결과는 다음과 같다. 첫째, 남북한 중등학교 지리교육은 교육과정상의 편제에서 북한은 고등중학교 전학년에 걸쳐서 지리가 독립과목으로 편제되어 있으나, 남한은 중학교 사회과에 통합되어 있고, 고등학교에서는 공통사회에 포함되었으며 세계지리가 선택과목으로 되어있는 등 지리교육 내용계열과 조직체계도 차이가 난다. 둘째, 지리 교육의 이념과 목표에서, 남한은 민주시민 양성을 목표로 하여 개인의 지리교육적 성취가 주된 것이나, 북한은 집단 구성원으로서의 개인 양성에 중점을 두고 있다. 이러한 차이점은 정치체제의 차이에서 비롯된 것이며 지리교육 내용의 구성과 강조점등에서 많은 차이점을 나타내게 하고 있다. 셋째, 지리교육 내용 구성과 서술 등에 차이가 있다. 국토지리와 세계지리 및 계통지리와 지지의 배열과 비중 등이 다르며, 내용의 서술에서도 차이점을 볼 수 있다. 특히, 북한에서는 국토지리와 자연지리의 비중이 높으며, 주요 개념과 용어 설명에서 남한과 다른 점이 보인다. 넷째, 교과서의 구성과 교수-학습 방법 및 자료 사용에서 차이점이 보인다. 북한에서는 실습, 실험 등이 강조되면서 실제적인 기능 향상에 많은 비중을 두고 있으며, 사진에 비해서 그림을 사용하는 삽화의 비중이 높다. 교과서의 외형적 체제와 지질 등에서 차이가 큰데, 이 점은 경제력의 차이에서 비롯된다. 본 연구 결과 남북한은 모두 지리교육을 중등학교에서 중요시하고 있으며, 지리교육을 통하여 소기의 목표 달성에 노력하고 있으나, 서로간에 상당한 차이점도 발견할 수 있었다. The purpose of this study is to understand the similarity and differences of the geography textbook between north and south Korea in preparation for the unification. Five geography textbooks for the first through fifth grade in secondary school were used in the analysis of the geography curriculum for secondary schools in North Korea. The major findings of the study are as follows: First, South Korea takes an integration approach to teach geography as part of the social studies education whereas North Korea treats geography as an independent subject throughout secondary school. Second, South Korea aims at nurturing democratic citizen, emphasizing individual achievement, whereas North Korea puts emphasize nurturing citizenship within community. Third, difference is noted in the organization and content of the geography curriculum between the two Koreas. North Korea puts more emphasis on national geography and natural geography than does South Korea. Forth, North Korean textbook is different from that of South Korea in that the former emphasizes on performance skills through hands-on practice and training. Also North Korean textbook uses more drawings than pictures. Despite differences in various aspects of curriculum and textbooks, there are a great deal of overlap in essential concepts and contents covered in two Koreas' geography textbooks. Both Koreas value geography education in the secondary schools and make efforts to fulfil the educational objectives in geography.

      • EMTP MODELS를 사용한 거리계전기법 구현에 관한 연구

        이명희,최해술,서용필,김철환 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.2

        This paper presents a new distance relay modeling techniques which avoids unnecessary computational procedure. A general-purpose simulation language, called MODELS, has been added to the software ATP(Alternative Transients Program) providing a new option to perform numerical and logical manipulations of variables of an electrical system. This language has been designed to replace the previous option TACS(Transient Analysis of Control Systems) which permits to simulate a control system in conjunction with a large power network. One purpose of this study is to build a structure for modeling of digital distance relays within EMTP MODELS. Contrary to the traditional methods, the new method using MODELS reduce the number of simulation steps in modeling the distance relay.

      • 다양한 확정성을 갖는 CSSM API를 이용한 전자상거래 적용 방안

        김의탁,신동명,최용락 대전대학교 산업기술연구소 1999 論文集 Vol.10 No.1

        This study is proposed the plan of applying CSSM API(Common Security Service Management Application Programming Interface) being various extensibility to Electronic Commerce. Electronic Commerce is that trades products, documents customer to company, company to company, or company to government like real commerce. However, there are lots of security problems with Electronic Commerce because of using public network. especially internet. Cryptographic Application Programming Interface supports cryptographic services for each levels and various security services. CSSM API provides modulity, simplicity, and extensibility by various modules, interfaces compare to other CAPIs(Cryptographic Application Programming Interfaces). The proposal is expected that provides various security services to electronic commerce.

      • SCOPUSKCI등재

        Physiological and Chemical Characteristics of Field- and Mountain-Cultivated Ginseng Roots

        Choi, Yong-Eui,Kim, Yong-Suk,Yi, Myong-Jong,Park, Wan-Geun,Yi, Jae-Seon,Chun, Seong-Ryeol,Han, Sang-Sup,Lee, Sung-Jae The Botanical Society of Korea 2007 Journal of Plant Biology Vol.50 No.2

        Demand is increasing for mountain-cultivated Panax ginseng (MCG) because its quality is considered superior to that of field-cultivated ginseng (FCG). However, MCG grows very slowly, and the factors that might affect this are unknown. In addition, little information is available about the physiological characteristics of its roots. Here, we investigated local soil environments and compared the histological and chemical properties of MCG and FCG roots. Average diameters, lengths, and fresh weights were much smaller in the former. Photosynthesis rates and root cambial activity also were reduced in the MCG tissues. Our analysis of soil from the mountain site revealed an extremely low phosphorus content, although those samples were richer in total nitrogen and organic matter than were the field soils. MCG roots also contained higher amounts of ginsenosides, and total accumulations increased with age. Moreover, ginsenoside Rh2, a red ginseng-specific compound, accumulated in the MCG roots but not in those from FCG plants. Interestingly, numerous calcium oxalate crystals were found in MCG roots, particularly in their rhizomes (i.e., short stems). Therefore, we can conclude from these results that low levels of the essential mineral phosphorus in mountain soils are a critical factor that retards the growth of mountain ginseng. Likewise, the high accumulation of calcium oxalate crystals in MCG roots might be an adaptation mechanism for survival in such a harsh local environment.

      • SCIESCOPUSKCI등재

        Cytoprotective Effects of Docosyl Cafferate against tBHP-Induced Oxidative Stress in SH-SY5Y Human Neuroblastoma Cells

        ( Yong Jun Choi ),( Eun Bee Kwak ),( Jae Won Lee ),( Yong Suk Lee ),( Il Young Cheong ),( Hee Jae Lee ),( Sung Soo Kim ),( Myong Jo Kim ),( Yong Soo Kwon ),( Wan Joo Chun ) 한국응용약물학회 2011 Biomolecules & Therapeutics(구 응용약물학회지) Vol.19 No.2

        Neuronal cell death is a common characteristic feature of a variety of neurodegenerative disorders including Alzheimer`s disease and Parkinson`s disease. However, there have been no effective drugs to successfully prevent neuronal death in those diseases. In the present study, docosyl cafferate (DC), a derivative of caffeic acid, was isolated from Rhus verniciflua and its protective effects on tBHP-induced neuronal cell death were examined in SH-SY5Y human neuroblastoma cells. Pretreatment of DC signify cantly attenuated tBHP-induced neuronal cell death in a concentration-dependent manner. DC also significantly suppressed tBHP-induced caspase-3 activation. In addition, DC restored tBHP-induced depletion of intracellular Bcl-2, an anti-apoptotic member of the Bcl-2 family. Furthermore, DC signifi cantly suppressed tBHP-induced degradation of IKB, which retains NF-kB in the cytoplasm, resulting in the suppression of nuclear translocation of NF-kB and its subsequent activation. Taken together, the results clearly demonstrate that DC exerts its neuroprotective activity against tBHP-induced oxidative stress through the suppression of nuclear translocation of NF-kB.

      • KCI등재
      • KCI등재후보

        한국인 가족성 고콜레스테롤혈중환자의 임상적 특성

        박영배(Yong Bae Park),한기훈(Ki Hoon Han),최영진(Young Jin Choi),최성주(Sung Joo Choi),손대원(Dae Won Sohn),오병희(Byung Hee Oh),이명묵(Myong Mook Lee),최윤식(Yun Shik Choi),서정돈(Jung Don Seo),이영우(Young Woo Lee) 대한내과학회 1994 대한내과학회지 Vol.47 No.1

        N/A Background: Familial hypercholesterolemia (FH) is a frequent dyslipemic disorder (one in 500 in Caucasian) inherited by autosomal dominant trait and constitutes about 59 of all cases who have myocardial infarction. While this disorder is of clinical importance, little is reported about familial hypercholesterolemia in Korea. Method: We analysed the lipid profiles, Achilles tendon thickness, body mass index, lipoprotein levels and lipoprotein (a)(Lp(a)) in patients (N=26) with FH and their first degree relatives (N = 92) who visited the Seoul National University Hospital between January 1991 and August 1992. Clnical characteristics and coronary angio-graphic findings were also analysed in probands and their first degree relatives affected with familial hypercholesterolemia. 1) Twenty seven out of 92 first degree relatives were affected with familial hypercholesterolemia, The overall morbidity was 42.39(53 out of 118) and both sexes were equally affected (male: female=26:27), suggesting that familial hypercholesterolemia is autosomally inherited disorder. 2) The mean cholesterol level of the affected was abnormally very high (mean 345. 6 mg/dl) and was similar to that of Japanese studies on familial hypercholesterolemia. Lp (a), another risk factor of coronary artery disease, was higher (mean 24, 5 mg/dl) in the affected than in normal controls. 3) Achilles tendon thickness was significantly increased in all the cases with familial hypercholesterolemia (N =30, mean l3.7 mm, mean age 46.2 years: 23~75 years), compared with that of those who were not affected with familial hypercholesteolemia (N =20 mena 6. 9 mm, mean age 46 8 years), suggesting that thickening of Achilles tendon is a specific clinical finding of familial hypercholesterolemia (FH). 4) Patients with FH and coronary artery disease (CAD) were significantly older than FH patients without CAD (p<0,01). The coronary atherosclerosis score (CAS: Jenkins 1978) was positively correlate with age (R=0.91), which suggested that developement of CAD and the degree of coronary atherosclerosis was associated with the duration of exposure to, hypercholesterolemia. 5) The significant stenosis of coronary artery develped on proximal segments (14 out of 28 lesions N = 1) according to the findings of coronary arteriography, suggesting that CAD in FH can produee more fatal outcomes. Conclusion: Familial hypercholesterolemia is autosomal dominant inherited disorder of lipid mctabolism and is closely associated with coronary artery disease. The affected are almost totally asymptomatic until they experience angina or myocardial infarction, To prevent the fatal outcome due to coronary artery disease, more intense clinical attention sould be paid to detect familial hypercholesterolemia proband and its affected asymptomatic first degree relatives through pedigree study.

      • SCOPUSKCI등재

        위식도역류질환에서 십이지장위식도역류 - 장시간 보행성 식도내 pH및 빌리루빈의 동시측정에 의한 평가

        최명규(Myong Gyu Choi),박수헌(Soo Heon Park),방춘상(Choon Sang Bang),한준열(Joon Yul Han),김재광(Jae Kwang Kim),최규용(Kyu Yong Choi),정인식(In Sik Chung),정규원(Kyu Won Chung),선희식(Hee Sik Sun),박두호(Doo Ho Park) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.4

        N/A Background/Aims: Esophageal reflux damage may be produced by agents other than acid and the term alkaline esophagitis has been applied. Methods using esophageal pH monitoring to assess duodenogastroesophageal reflux have been suggested but gastric neutralization has made these methods difficult to prove conclusively. The purpose of this study were to investigate the role of duodenogastroesophageal reflux in gastroesophageal reflux disease(GERD) and to understand the relationship between pH and duodenogastroesophageal reflux. Methods: we performed simul- taneous esophageal pH and bilirubin rnonitoring(Bilitec 2000, Synetics) in 14 symptomatic patients with gastroesophageal reflux and 10 healthy controls. Abnormal gastroesophageal reflux was defined when the percent total time of pHC4 or bilirubin absorbance 0.14 exceeded the 95th percentile of the range obtained in healthy volunteers. Results: Abnormal gastroesophageal reflux was diagnosed in 12(85.7%) of 14 patients, who could be categorized into 3 acid refluxers, 1 bile refluxer or 8 combined acid and bile refluxers. All 6 patients with severe esophagitis(grade 2 by Savary Miller classification) were combined acid and bile refluxers and had markedly prolonged acid and bile reflux compared to 8 patients with normal or mild esophagitis(% total time of pH 4(mean+SE): 13.4+2.96 vs 5.0+1.8, p<0.05; % total time of bilirubin absorbance 0.14(mean+SE): 25.2+4.6% vs 7.9+3.8%, p<0.05). Mean pH of esophageal refluxate during bile reflux episode lasting longer than 5 minutes was 6.0(7.1% for pH C4, 8.8% for pH 4 5, 26.6% for pH 5-6, 47% for pH 6-7 and 8.3% for pH7). 4) 8 patients with a symptom index greater than 25% experienced 24 reflux symptoms of which 12(50.0%) were associated with acid reflux, 5(20.8%) were associated with bile reflux and 7(29.2%) were not associated with bile or acid reflux. Conclusions: Alkaline esophageal reflux is a misnomer. Esophageal pH monitoring does not adequately identify symptomatic non-acidic duodenogastroesophageal reflux. Patients with com- bined acid and bile reflux are more likely to develop severe esophagitis. (Korean J Gastroenterol 1996; 28:469 - 476)

      • SCIESCOPUSKCI등재
      • SCIESCOPUSKCI등재

        Development of Antimicrobial Edible Film Incorporated with Green Tea Extract

        Kim, Ki-Myong,Lee, Boo-Yong,Kim, Young-Teck,Choi, Sung-Gil,Lee, Jun-Soo,Cho, Seung-Yong,Choi, Won-Seok Korean Society of Food Science and Technology 2006 Food Science and Biotechnology Vol.15 No.3

        This study investigated the antimicrobial activity of soy protein isolate (SPI) film containing green tea extract (GTE, 1-4%, w/w) on dental caries-inducing bacterium (Streptococcus mutans), food pathogenic (Staphylococcus aureus, Escherichia coli 0157, Salmonella typhimurium), and spoilage (Pseudomonas aeruginosa) bacteria. The physical and mechanical properties of the SPI film containing GTE were also studied. The SPI film containing GTE (4%, w/w) exhibited good antimicrobial activity against S. mutans and S. aureus. The antimicrobial activity of the SPI film containing GTE increased against S. mutans as the concentration of GTE increased up to 4%(w/w). SPI films containing GTE showed lower tensile strength and elongation, and higher total soluble matter than those of control SPI film. Therefore, GTE can be used as one of antimicrobial agents for anti-dental caries and food packaging films.

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