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        검색결과 188

        41.
        2010.09 구독 인증기관 무료, 개인회원 유료
        3,000원
        42.
        2010.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study is aimed at proposing the national policy for medical device control system in Korea as deeply analysed the present status of the system. On 1979, Korean government had started to inspect 24 kinds of the medical devices such as X-ray diagnostic equipments, medical sterilizer and etc. mostly imported from advanced countries which USA, Germany and Japan for the first time according to the Pharmaceutical Affairs Law. However medical devices were becoming consideration as an important partner of diagnosis, curing and alleviation of diseases by medical doctors and also much important keeping the health at home. Furthermore medical devices industry can be designated as a national growth engine industry. So it is necessary not only to harmonize to international standards but also the harmonization of the system including pre-market application and post-market surveillance, is strongly needed by the Korea Food and Drugs Administration(KFDA).
        4,900원
        43.
        2010.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        바위떡풀의 기내 배양시 MS배지의 농도별로 12주간 배양한 결과 1/2 MS 배지에서 신초길이 1.9 cm, 엽수 24.7매, 뿌리수 8.0개, 신초수 절편당 11.0개로 1 MS나 2 MS 배지에 비해 효과적이었다. 1/2 MS배지를 기본으 로 하여 생장조절제를 첨가하여 8주간 배양한 결과 CPPU 농도처리시 신초길이와 뿌리수는 무처리구에서 많았으나 신초수에 있어서는 농도가 높아질수록 많아져 2.00 mg·L−1농도 처리구에서 8.2개로 가장 많아 증식에 유리한 것으로 나타났으나 TDZ, zeatin과 BA처리는 무처리에 비해 처리효과가 없는 것으로 나타났다. 그러므 로 바위떡풀을 조직배양 방법을 이용하여 대량증식 시키 고자 할 때에는 생장점을 초대배양(MS배지)한 후 신초를 CPPU 2.00mg·L−1을 첨가한 1/2 MS배지에 치상하여 다 신초를 발생시킨 후 다시 신초를 하나씩 분리하여 1/2 MS 배지에 계대하여 배양한 후 순화하면 다량의 식물을 획득 할 수 있을 것으로 생각된다.
        3,000원
        44.
        2010.06 구독 인증기관 무료, 개인회원 유료
        Coastal dune wetland has an important ecological implication in that it could be closely related to the coastal dune ecosystem by providing various ecological habitats as well as ecological corridor. This paper aims to investigate the hydrological characteristics and aquatic biota of Mokgimiyeonmot (pond), coastal dune wetland in Gulupdo (island). Mokgimiyeonmot located in the lowland dune flat areas has six months long hydro period a year and can be categorized into wet dune slack type coastal dune wetland. As a result of this study, two species of freshwater fishes, two species of amphibia, and 35 species of benthic macro-invertebrates are recognized. Talitridae sp. belonging to Amphipoda also recognized in this survey for the first time from Korea. The results of this study are expected to be basic data necessary to understand the aquatic ecosystems and manage the ecological function of coastal dune field.
        4,000원
        45.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper presents an economic analysis for the travel aids service system for visually handicapped persons through RFID (Radio Frequency Identification). This research estimates both cost and economic effect of the service. By using input-output analysis technique, three kinds of repercussion effects - domestic production, value added, and workers induced by the travel aids service - are also calculated. To evaluate the profitability of the service, we investigate the procedures through which the service has an effect on the interested parties and develop formulas describing the procedures. The benefit of the service have been generally obtained by measuring the willingness to pay (WTP). This paper, however, obtains the monetary value of benefit by estimating the parameters of the formulas, so that a close improvement of the service may be possible with the result of the economic analysis.
        4,000원
        46.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purposes of this article is to analyse how market competition of credit card company affect price(interest rate) and survival length of card users. This paper uses individual account data from a large Korean credit card company during the periods from 2002 to 2006. The findings of our study are as follows. First, market competition of credit card company have a negative effect with interest rate of credit card. Second, market competition of credit card company have a affirmative effect with survival length. Finally, The effect of Increasing delinquency rate due to price increase is smaller than decreasing delinquency rate due to extending survival length.
        4,000원
        47.
        2009.12 구독 인증기관 무료, 개인회원 유료
        Byun Jeung Ok Ham, written by Jin Sa Tak(1627~1707, won gong, penname ju hwa ja) is composed of four books. this book is estimated of being written after A.D 1688 and composed of internal medicine, obstetrics and gynecology, ophthalmology, dental surgery and so on, total 36 parts of clinical medicine. This is the first book of that four studying about definition on eum yang of 31 diseases. 31 subjects follow, attack by wind and cold(傷風傷寒), paralysis(中風), vomiting(吐症), diarrhea(瀉症), malaria(瘧疾), dysentery(痢疾), epilepsy(癲狂), cough(咳嗽), constipation and urinal impossibility(大小便閉), heartache(心痛), abdominal pain(腹痛), headache(頭痛), eye disease(目痛), tonsillitis(雙蛾), tumor(癰瘡), exhaustion(脫症), perspiration(汗症), congestion(痰症), swelling(腫脹), heatstroke(暑症), asthma(喘症), evil influence(中邪), hematemesis(吐血), wet dream(夢遺), pyrosis(呑酸), backache(腰痛), intestinal convulsion(霍亂). childbirth(生産), hard labor(小産), after delivery(産後), sterility(子嗣). this treatise is the first book of four which deals with eum yang(陰陽) translating into korean and studying about medical theories. In every parts, author's unique clinical theory appears affluently and in that periods his study developmented a lot in those days' medical methods. second book is weaknessand strongness,third upper and low, fourth truth and untruth. first book, Jin Sa Tak says studying on eum yang is oriental medical basic theory and on incurable diseases or chronic symptoms, doctor must go back to that eumyang demonstration after can cure patients. second parts are on weakness and strongness demonstration, that weakness is weakness of patients' energy and strongness is prosperous condition of diseases' attack. third parts are on upper and low, that upper is upper parts of human body of painful parts and low is human low parts of pain, that is parts of under waist. fourth parts are truth and untruth, true symptoms and untrue symptoms, that is the real reaction of human condition and the other way. every prescriptions are author's creations. this book provides new viewpoints which surpasses original ancient medical theories. author suggests new opinions about chronic and incurable diseases. prescrisptions were made of following correct theory of gun sin jua sa theory (君臣佐使) and promoted levels of clinical methods. this treatise refers to dong ui bo gam(東醫寶鑑), huang je nei gyung(黃帝內經), sang han lon(傷寒論), ui hak yip mun(醫學入門) and modern physiology and pathology.
        14,900원
        48.
        2009.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Antioxidative activities of fresh, steamed and black garlics by different processing condition were investigated on the soybean oil. The crushed fresh, steamed and black garlics were added to 100 mL of soybean oil at a level of 0, 5, 10, 20 and 40 g respectively, and then the oil mixture containing garlics (reaction samples) were heattreated for 48 hrs at 180℃ . The chromaticity of reaction samples were increased during heating. After 48 hrs heating, in the sample added 40 g/100 mL chromaticity of each samples were 1.36, 2.99 and 1.99, in the crushed fresh, steamed and black garlics, respectively. Anisidin value showed irregularly increased during heating. Acid values of reaction samples were higher than control during heating, those levels were ranged from 0.82 to 2.04 mg/g after 12 hrs, were gradually increased to 3.15~4.30 mg/g after 48 hrs. Peroxide value of reaction sample containing black garlic(40 g/100 mL) was lower than the samples containing tocopherol or BHT, after 48 hrs heating. TBA value of reaction samples containing fresh, steamed and black garlic of 40 g/100 mL were the lowest in the sample added black garlic, after 48 hrs heating. These results suggested that oxidative stability of black garlic in soybean oil was more potential than the other garlics during heating.
        4,000원
        49.
        2009.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper presents the economic validity with the cost/benefit analysis on establishing R&D Supreme Academy. To evaluate the profitability of R&D Supreme Academy, willingness to pay (WTP) is measured by contingent valuation method (CVM) and then the net present value (NPV), internal rate of return (IRR) and benefit/cost ratio(BCR) are calculated. The results of economic evaluation verified that the establishment of R&D Supreme Academy is timely and effective in an economic perspective.
        4,000원
        50.
        2009.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study develops reeducation programs to satisfy needs conducted by the analyses of potential customers and present R&D education programs. The results of this study were derived using the data collected from 200 R&D researchers and control managers occupied in research centers. By analyses of the survey, results showed that the professional R&D reeducation institution and specialized education programs according to career and position were needed. To bring solution of the researcher's reeducation, the establishment of R&D Supreme Academy is essential for effective human resource development and management in R&D.
        4,000원
        51.
        2009.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        FIB와 나노메니퓰레이터를 이용한 다양한 nano manufacturing을 통해 단일 나노선 소자제작 및 평가가 가능하였으며 또한 나노물질 자체의 전기적, 기계적 특성 평가를 수행할 수 있었다. 나노메니퓰레이터를 나노선에 직접 접촉시켜 전기적 특성을 평가하는 기술은 STA 등과 함께 사용될 때 높은 신뢰도를 갖는 신호를 얻을 수 있었다. 특히, 이를 이용한 나노 소재 특성 평가기술은 소자제작 시간을 단축시킬 수 있고 패턴닝으로부터 화학적 오염을 줄일
        4,000원
        52.
        2009.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The effort for GSI based IT system consolidation has been continued due to the increase of the system and complication increase of system connection, mainly by the global company. Since successful example of GSI realization by part of developed company affect to Korea, global level IT system consolidation has been examined mainly by the domestic company that have great deal of overseas business. Although they have examined consolidation possibility mainly on R&D, finance, operation management part which is the base part of company management, there are limitation for consolidation realization because of the difference between regional business problem of huge cost needed for consolidation. To overcome these realization limitations, it is necessary to lead risk and cost reduction through stepwise part unity and decide Priority Evaluation Framework for Consolidation target and systematic consolidation strategy. For GSI realization, appropriate distributions of unification time according to target system are needed. In this study, based on easiness and usefulness of consolidation and connection between the targets, evaluation methodology for Priority Evaluation Framework of system consolidation has been developed. Priority Evaluation Framework has been decided by applying developed methodology to global production company of high tech industrial part. Through this methodology, companies can realize successful and stable GSI by investing global resources intensively by Priority Evaluation Framework of consolidation target system
        4,000원
        53.
        2009.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This experiment was conducted to investigate the effect of wa-song (Orostachys japonicus A. Berger) extracts on the oxidative stability of edible oil. Wa-song was dried from hot air (HWE) and freeze (FWE), and then they were extracted by hot water. The different levels (0.1, 0.5 and 1.0 g/100 mL) of HWE and FWE were added to soybean oil and lard. The chromaticity of edible oils was generally increased with prolonged heating time and HWE was higher than FWE. The anisidine value showed significant increase during heating for 48 hrs. After heating for 48 hrs, it was lower than control, except for HWE added sample of 0.5 and 1.0 g/100 mL, FWE added sample of 1.0 g/ 100 mL. In lard, it was lower in sample added wa-song extract than control. The acid value was not significant by added amount of wa-song. Its value in HWE added sample was lower than FWE, after heating for 48 hrs. POV was lower HWE than FWE, also. After heating for 24 hrs, TBA values in soybean oil containing HWE and FWE added sample was lower than control. In lard, its value in HWE and FWE added sample was lower than control during heating for 12~48 hrs. Therefore, those results suggested that HWE has higher antioxidant activity than FWE added sample, and then oxidative stability of HWE in edible oil was more potential for lard during its heating.
        4,000원
        54.
        2009.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 1999년부터 2005년까지 부산경남축산물공판장에서 도축된 비육돈 1,251,572두의 자료를 이용하여 돼지의 주요 도체형질인 도축체중, 등지방두께와 도체등급에 대한 년도별 도체등급 변화 추세와 환경적인 요인을 분석하였다. 도축체중의 경우 암퇘지, 수퇘지 및 거세돼지가 각각 82.97±0.008, 82.00±0.090 및 82.79±0.008㎏으로 조사되었다. 등지방두께는 암퇘지, 수퇘지 및 거세돼지가 각각 19.27±0.006, 15.99±0.072 및 22.49±0.006㎜로 수퇘지가 유의적으로 얇았다. 도축체중의 경우 1999년에 80.38±0.033㎏을 가장 가볍게 나타났고, 2005년에 84.26±0.033㎏으로 가장 무겁게 나타났으며, 연도가 증가함에 따라 도축체중이 증가하는 경향을 보였다. 년도별 도체등급 변화 추세를 보면 A등급 출현율이 2000년부터 2003년까지는 계속 증가하다가 2003년 이후로 점차 감소하는 경향을 나타냈다.
        4,000원
        55.
        2008.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Recently, technology growth and globalization of the market bring the age of knowledge based economy. These competitive environment require that the firms should cooperate among industry, academia, and institute. Cooperation between firms and universities for research and development is one of the most important business strategy in improving their business competences. This paper studied the factors of the firm involvement in the cooperation between firms and universities for technology development. To analyze the involvement factors, the data of 'R&D activity survey' of Ministry of Science and Technology(MOST) were used. Based on results of the analysis, 6 factors such as firm size, the years of firms, ratio of the researchers, the ratio of collaborative investments, the ratio of new product development, and the number of property right were significant. As the technology cooperation get flourished, the results of this research is expected to play a meaningful role as an basic data for developing the cooperation between industry and academia policy for technology development.
        4,000원
        57.
        2007.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        감국(Dendranthema indicum)의 환경조건에 따른 개화기의 초장, 개화소요일수, 카로티노이드 함량 및 peroxidase 활성을 고랭지(대관령, 표고 800m)와 평난 지(강릉, 표고 20m)의 노지와 온실에서 각각 비교하여 원예화 개발 가능성을 검토하였다. 환경조건에 따른 광 량은 고랭지 노지 > 평난지 노지 > 고랭지 온실 > 평난지 온실 순으로 감소하였다. 고랭지의 노지에서는 UV A와 UV B의 세기가 22.4, 3.02W·m-2로 평난지 노지의 19.9, 2.24W·m-2보다 각각 12.6, 34.8% 더 강했다. 감국의 초장은 평난지의 온실조건에서 가장 컸 으나 개화는 고랭지의 노지에서 가장 빨랐다. 감국 꽃 의 주요 색소인 카로티노이드는 고랭지의 온실에서 60.9OD·g-1으로 가장 많았다. 그러나 peroxidase 활성 은 평난지의 온실에서 자란 식물체에서 5.72unit·mg-1 protein 가장 높았다.
        4,000원
        58.
        2007.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        용담의 영양번식시 조직배양을 통한 대량번식 방법 을 찾고자 연구를 수행한 결과 잎을 치상하면 신초 발생이 적거나 느렸고 줄기마디를 치상할 경우에 신초 발생이 많았으며 명·암 조건에서는 암 조건에서 신초 발생이 많았다. CPPU 농도에서는 무처리 MS배지의 0.7개 보다는 CPPU 2.0mg·L-1농도에서 2~3.5개의 신 초를 발생시켜 더 효과적이었다. 결과적으로 많은 신초 를 발생시키기 위해서는 줄기마디를 NAA 1.0mg·L-1 와 CPPU 2.0mg·L-1를 넣은 MS배지에 치상하여 암 조건에 8일간 두었다가 명조건에서 배양하는 것이 가 장 효과적인 것으로 나타났다.
        3,000원
        59.
        2007.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aims at investigating the effects of phonological short-term memory (PSTM), learning styles, and oral repetition on middle school students" learning of English vocabulary. Two groups had different treatments (semantic learning and oral repetition) and vocabulary learning was assessed in spelling, meaning, and production twice, immediately after the learning sessions and two weeks thereafter. The results reveal that oral repetition and the PSTM capacity affected the vocabulary learning significantly, but not learning styles. The students with a higher PSTM capacity learned significantly more words but didn"t remember them better for a longer period than those with a lower PSTM capacity. No clear effects of learning styles were noted, while the PSTM capacity of auditory learners was higher than that of visual learners. The oral repetition group learned significantly more words than those who did only semantic learning, which suggests the usefulness of oral repetition in learning new vocabulary.
        6,700원
        60.
        2007.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        시금치 수경재배에 적합한 육묘배지 선발과 육묘 플러그 트레이 크기, 육묘 플러그 트레이 셀(cell)당 종자수 조절로 안정 공정 육묘생산을 위한 실험을 수행하였다. 수경재배 육묘배지에 따른 입모율과 유묘의 생육특성을 조사한 결과 입모율은 보습성이 좋은 입상암면 〉입상암면+펄라이트 혼용배지〉코코피트〉펄라이트〉우레탄 스펀지 순으로 나타나 우레탄 스폰지의 입모율이 가장 낮았다. 육묘 플러그 트레이 셀당 종자수에 따른 엽 면적은 종자수가 많을수록 적어지고, 셀당 생체중은 2립(12.5g)에 비해 4립(33.9g)이 무거웠다. 따라서 셀당 종자수가 적으면 식물체 1개 체중은 증가되지만 전체 셀당 생체중은 감소되는 경향을 나타내었다. 수량은 셀당 2립 파종 10,200kg·ha-1 비해 4립 파종 14,910kg·ha-1으로 46% 증가되었다.
        4,000원
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