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      • 林土의 有機物의 分解速度와 無機養料의 垂直分布에 關한 考察

        金遵敏,張楠基,鄭玩鎬 서울대학교 교육대학원 학술연구회 1966 論文集 - 서울대학교 교육대학원 Vol.3 No.-

        Kim Choon Min, Chang Nam Kee and Chung Whan Ho: Decomposition rate of plant residue and the vertical distibution of mineral nutrients in the woodland soil. The relationship between decomposition rate of litter and the amount of mineral nutrients dispersed to the soil horizons were studied on the oak and pine forest stand. The results are as follows: 1. Decomposition rate of litter was highest in the F horizon of the oak stand, however in the pine stand it was highest in H horizon. 2. The correlation coefficients between decomposition rate and humus, organic carbon, moisture content, calcium, phosphorus, and nitrogen in the pine stand are; 0.90, 0.98, 0.76, 0.98, and 0.88, in oak stand; 0.97, 0.93, 0.92, 0.97, 0.74 and 0.73. 3. Factors which affect the decomposition rate of litter are humus, organic carbon, moisture content, calcium, phosphorus and nitrogen. 4. Among the variables, PH, moisture content and phosphorus under the oak and pine forest showed significant differences in each horizon. 5. C/N ratio of pine stands is higher than that of oak stands studied. 6. The vertical distribution of mineral nutrients is highly related with the amount of humus accumulated on top soil.

      • 매체의 종류와 내용에 따른 인지적 특성연구 : 뇌파(Electroencephalogram;EEG) 분석을 중심으로

        전환성 청주대학교사회과학연구소 2006 한국사회과학연구 Vol.28 No.1

        본 연구의 목적은 미디어 인식론적 입장에서 매체별(TV, Radio, 신문, 모니터) 및 내용별 자극에 따른 뇌의 반응 특성에 어떠한 차이가 있는지를 알아보려는 것이다. 뇌 반응(Brain Activity Responses) 특성은 (주)락싸가 개발한 뇌파검사기(모델명: QEEG-LEX3208)를 사용, 대학생 34명(남: 17, 여: 17)을 대상으로 8개의 측정부위(좌우 전전두엽-FP1, FP2; 좌우 전두엽-F3, F4; 좌우 측두엽-T3, T4; 좌우 두정엽-P3, P4)에 전극을 부착하여 뇌파(EEG)를 측정하였다. 측정된 뇌파의 상대파워(relative band power)를 계산, 기준뇌파(빈 모니터 화면에 의한 뇌파)를 준거로 뇌 반응 특성을 비교 분석하였다. 최종 분석에는 매체의 경우 22(남: 11, 녀: 11)명, 내용의 경우 24명(남: 11, 여: 13)의 자료가 사용 되었다. 연구결과 실험에 사용된 모든 매체와 내용 자극에 대하여 모든 측정 부위에서 기준뇌파에 비해 자극뇌파의 상대 알파 값이 감소하는 알파파 억제(alpha blocking) 현상이 확인 되었다. 반면 이와는 반대로 매체별 및 내용별 실험 자극물에 대하여 측정 된 거의 모든 부위에서 상대 세타 값이 증가하는 새롭고 특이한 현상도 발견 되었다. 그 이유와 원인을 밝히기 위한 추가적인 분석과 연구가 필요하다. 신문은 전 전두엽을 활성화 시킨 반면 TV는 좌우 전 전두엽을 제외한 나머지 측정 부위를 활성화시키는 등 매체별 뇌 반응 차이가 발견되었다. 자극에 대한 뇌 반응 특성은 내용에 따라서도 달라진다. 선정적 내용과 코미디 내용은 모든 측정부위에서 베타 값이 증가한 반면 스포츠와 폭력적 내용은 좌우 전전두엽에서 감소하는 차이를 보였다. 좌 반구(FP1+F3+T3+P3)와 우 반구(FP2+F4+T4+P4)를 묶어 전체로 비교할 경우 반구별 편측성은 검증되지 않았으나 측정 부위별 좌 우뇌 차이는 부분적으로 검증 되었다. The purpose of this study is to examine differences of Brain-Acticity Responses to media and contents through EEG(Electroencephalography). For this, four experimental media stimuli (same news) of TV, Radio, Newspaper and Monitor(displayed only in characters) and four of erotic, sportic, comical and violent contents for TV(same media) were used. Brain waves were measured on 8 electrodes (FP1, FP2, F3, F4, T3, T4, P3, P4) according to the international 10-20 electrode system to 34 sampled students of Chongju University using QEEG-LEX3208 which developed by Laxtha Inc. Raw data were transformed with FFT(Fast Fourier Transforn) and analysed in relative band power. 22 sample data(male: 11, female: 11) for media and 24 sample data(male: 11, female: 13) for content were analysed. The results show that relative alpha powers decrease at all electrodes regardless of media or contents, which refer to confirm the existing of alpha blocking phenomena. One of the important and interesting results of this study is that relative theta power increase at almost electrodes (except for T3 & T4 incase of comedy) both in media and contents in contrast to alpha power. Further researches are needed for explaining the reasons and causes. It is also found that brain-activity responses are little bit different depend upon medium and content. TV activate frontal, temporal, and parietal lobe excluding prefrontal, while newspaper activate prefrontal lobe. In case of radio, relative theta power is increased but relative gamma power decreased at all electrodes compare to background brain waves.

      • 大邱達城公園 入場客의 行態

        李奐基 啓明大學校 産業經營硏究所 1980 經營經濟 Vol.12 No.1

        The pourpose of this study is to present the various data for better establishment of tourism geographical policy as well as to contribute to the improvement of park-planning, landscape gradening, and facilities and management of parks in implementing the urban park project. To analyze and identify the behavior pattern of the visitors of Dalseong Park,, the actual research on the characteristics and the distributions of the tourists has been emphasized. The details of the actual research on the visitors of Dalseong Park is as follows: 1) Research period: 14-20 May, 1979(one week-since the number of the visitors in the time marked the highest in the year) 2) Research method: personal interviews and written questionaires. 3) Selection of sujects: Rendom sampling method. 4) Number of respondents: 558 persons. In order to prove the process of changes and regional distributions of the visitors: some data and additional informations provided by the Office of Dalseong Park and the Park Division of Daegu City have been utilized in drawing the diagrams and maps. The summary of the examination on the behavior pattern of the visitors is as follows: 1) 73.3% of the total visitors are youth -most of the males are in twenties while the females are in teens. By measures above citioens, young or old, man or woman would be able to rest and eojoy their leisure time in the pleasant surrouodings and would make a park an urban-resource to play a part of a??tracting sight-seers to Daegu.

      • KCI등재
      • KCI등재

        디지털 경제시대에서의 중소기업 인적자원 개발

        김환식 한국직업능력개발원 2001 직업능력개발연구 Vol.4 No.2

        In general, the 21C is called the knowledge-based society, which is strengthened by digital economy, characterized as ICT industry, Internet, e-commerce and so on. According to the advent of the digital economy age, SMBs has come to compete with the large enterprises equally. That's because the size, distance and space are not the factor of competitiveness power furthermore. If SMBs have gotten the new and state-of-the-art technology and made strong efforts to innovate, they are capable of competing and sometimes held a prominent position. However, the technology and innovation will be able to realize by human resources. After all, the competitiveness of SMBs will be determined by the recruiting and managing of the competent human resources. The supporting system of the HRD of workers in SMBs is represented as vocational competency development program based on the vocational training promotion act. Usually, the HRD of workers in SMBs is a field of market failure, because of externalities of HRD. To relieve market failure and build up skill development of SMBs workers, the HRD for SMBs workers is treated preferentially as compared with the HRD for SMBs workers under the provision fo the act. However, the actual results were not produced differently to the intention. This is possible not only because of market failure, but also because of government failure. So the program and system have to be renovated and reformed. The direction of HRD for SMBs workers, especially at from the side of governmental supporting system and program, is as follows. The approaches and methods suggested in the paper are not coherent. First, the HRD supporting system for SMBs worker is reviewed and the distinguished regulation between SMBs and large companies is also reviewed whether it is rationalized the digital economy age or not. Second, government (government funded institution) has to help SMBs to make a plan on HRD based on business strategy financially. The employment insurance act has to be revised. Vocational competency development program has to be renovated into fitting social insurances purpose, if the program is linked with the employment insurance continuously. In addition, the program, related to HRD for SMBs workers, working in ministry of education and human resources development and small and medium business administration are also connected with vocational competency development. The national HRD strategies for SMBs workers have to be discussed and established at the ministerial counciil for HRD.

      • 영화「쇼생크 탈출」의 표현형식에 대한 연구

        복환모 호남대학교 1998 호남대학교 학술논문집 Vol.19 No.2

        The purpose of this study is to analyze several scenes of the film to see its technique and the intention to use them. 「THE SHAWSHANK REDEMPTI0N」 is a film to describe the will of a man under the restriction to recover the freedom. The director, Mr. Frank Darabonts, shows formulated scenes consistently to represent a man's strong will to get out of the unfair suffering by the power in the film. In the film the camera lens symbolizes a wall of prison. Andy and Red, the characters in the film, are showed at the close distance by the medium shots. The audience can feel a kind of restriction by these shots. But he describes the free space which Andy feels after breaking the prison by the long shots. Various forms of expression are formulated for the motive and used to describe the theme of a film and express its mood.

      • 大邱市 北郊의 都市化에 關한 硏究 : a case of chilgok myeon, Chilgok county

        李奐基,楊辰錫 慶北大學校 師範大學 地理敎育科 1979 地理敎育 Vol.6 No.-

        This study was concerned about characteristices of Urbanization in regions around metropolitan. It has the purpose to make clear the structure of Urbanization in the northern outskirt of Daegu, Chilgok myeon, chilgok country, after searching the procedure of urbanization(1966-1976) and the actual Condition of urbanization. 1) In examining closely the procedure of urbanization, the comparative method was used and tried to understand the urbanization phenomenon as a regional phenomenon, As this study was geographic research in Urbanization. 2) Materials were dependent on existing statisties and those that I myself collected in the field by field-work. 3) In order to analyze actual conditions and procedure of urbanization, the following two indexs were used: (1) Changes of population-changes of total population, increase and decrease of population of each Dong(village), and change of industrial population. (2) Increase of Urban fuctional element-increase of houses, of shops, of factories of traffics and a jump of land price. The result of the analysis by the above method and indexes could be summarized as follows: 1) For nine years from 1966 to 1975, the population went on an an increase of 51.5%. In other words 7,124 persons increased from 13,828 persons in 1966 to 20,952 persons in 1975. such a rapid population increase was affected by the suburban explosin of Daegu. The density of population increased 152.4 persons/㎢ from 295.7 persons/㎢ in 1966 to 448.1 persons/㎢ in 1975. As for industrial population, the rate of the rural industrial population(1966-1971) was 13.7% down from 84.4% to 70.7%. On the other hand, the rate of urban industrial population was 5.3% up from 19.3% to 24.6%. In changes of population, the differences of each village being great, it was possible to divide the whole area into the growing, the nongrowing and the declining region. 2) Of urbanizing functional element increase; House increase rate from 1966 to 1976 was 39.5% but the house shortage rate increased 24% for the same period. And so the great house shortage took place. As for shop increase, all shops(84 shops) are retail trades, related with Daegu city. With factories and houses increasing, in this area we can find out the seperated urbanization phenomenon. As of 1976 August, the total of 79 factories were built in chilgok myeon dependent on the zoning program of Daegu city urban design. These factories are closely related with the technical development of Daegu. Traffics a day were 3,230 cars and so increased 15.6% a year. As the roads in this area were the most convenient, when compared with those in other area from Daegu. The urbanization on this area is growing rapider than in other area. During 1966-1976 the land price jumped 400-8300%. In other words this means the growing rate of urbanization. The urbanization of Chilgok myeon will continue in the future and social problems caused by the urbanization should be taken consideration in the policy.

      • Lovastatin의 암세포에 대한 항증식 효과에 관한 연구

        이환봉,장정순 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.1

        Background: Lovastatin which is a potent inhibitor of HMG-CoA reductase has antiproliferative effect on cancer cells. We investigated the cell cycle regulatory mechanism of anti-proliferative effect of lovastatin and its therapeutic value on cancer treatment. Methods: MDA-MB-231, an ER negative breast cancer cell line and PC-3-M, an androgen independent prostate cancer cell line were grown up to use. We checked expression pattern of cell cycle regulatory proteins such as cyclins, cdk inhibitors including p21, cdks, RB and RB family protein p107 with lovastatin by Western blot analysis and immunoprecipitation. Results: The proliferative tendency of breast cancer and prostate cancer cells was decreased with 10 μM lovastatin. Cyclin D1 was decreased, however p21, a cdk inhibitor was increased with lovastatin. There is no change in the protein level of cyclin E, cdk4 and cdk2. After 36 h incubation with lovastatin, RB and p107 were dephosphorylated and showed increased binding with transcription factor E2F1 and E2F4 respectively. Conclusion: These results show that lovastatin has antiproliferative effects on breast and prostate cancer cells. The cell cycle regulatory effects of lovastatin come to G1 phase and those are mediated by cyclin D1 depression, p21 induction and decreased activity of cdk4. In accordance with them RB dephosphorylation and its sucessive binding with E2F1 seem to have important role in growth inhibitory effect of lovastatin. These data suggest that growth inhibitory activity of lovastatin by way of cell cycle regulation supports the therapeutic value for cancer treatment.

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