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        검색결과 1,000

        361.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 이산화탄소와 석탄을 사용하여 합성가스 CO를 생산하는 실험을 수행하였다. CO 합성특성은 KOH 촉매를 사용한 화학적 활성화 방법에 의해 조사되었으며, 제조공정은 CO2 전환 반응에서 석탄과 활성화 촉매 비율, 가스 유량과 반응온도 등과 같은 실험변수들을 분석함으로서 최적화 되었다. KOH 촉매를 사용하지 않은 경우, 반응온도 950℃와 CO2 유량 300 cc/min에서 65% CO2 전 환율을 얻었으며, 반면에 촉매를 사용한 경우 같은 반응조건에서 98.1%의 전환율을 얻었다. 석탄의 활 성화촉매 반응물의 비(석탄 : KOH = 4 : 1)가 다른 반응물 비에 대해 더 좋은 CO2 전환율과 CO 선 택도 보여줌을 알 수 있었다.
        4,000원
        362.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        굴참나무 육종채종원에서 유전간벌 모형 및 다양한 간벌 강도에 따른 재적생장에 대한 개량효과 및 유전다양성을 추정하였다. 유전간벌 모형은 개체간벌, 가계간벌 및 가계 내 개체간벌이었으며, 간벌강 도는 개체목 기준으로 10% 단위로 적용하였다. 유효집단크기는 채종목 가계 간 유전적 유연관계를 나 타내는 공동조상도를 이용하여 추정하였다. 유전간벌 모형에 있어 개체간벌이 가계간벌 및 가계 내 개 체간벌 보다 모든 간벌강도에서 높은 개량효과가 추정되었다. 가계간벌은 모든 간벌강도에서 매우 낮은 개량효과가 추정되어 본 굴참나무 채종원의 유전간벌 방법으로 적용하기에는 부적절한 것으로 판단되었 다. 각 유전간벌 모형에 대한 유효집단크기를 추정한 결과, 가계간벌이 다른 간벌모형 보다 높은 유효 집단크기가 추정되었다. 개체간벌은 약도의 강도에서는 일정하게 유지되었으나 강도의 간벌에서는 낮게 추정되었으며, 가계 내 개체간벌은 중도의 간벌강도까지는 감소하는 경향을 나타내다가 강도의 간벌강 도에서 다시 증가하였다. 이상의 결과를 종합하며, 50% 이하의 간벌강도를 적용할 경우에는 개체간벌 이 효과적인 반면, 50% 이상의 간벌강도를 적용할 시에는 가계 내 개체간벌 방법이 효과적일 것으로 판단된다.
        4,000원
        365.
        2015.10 구독 인증기관 무료, 개인회원 유료
        The major issue in aircraft industry is aviation safety management because of demand improvement and advancement of the aircraft. This study is to assess the risks for aviation safety management using IRPN( importance-risk priority number) which is added to importance coefficient from RPN(risk priority number). In FMEA, RPN requires the factors like the occurrence (O), Severity (S), and Detection (D) of each failure mode to be precisely evaluated. Therefore, the severity and detection is derived by the value from FMEA of expert group based on the Fuzzy theory. The occurrence is calculated from the accident statistics of IATA(international air transport association) database. Particularly, this study introduces importance coefficient to prevent from RPN distortions. It is also derived from FMEA based on the Fuzzy theory. Finally, the critical ranking of risk factors according to I-RPN is compared with the existing research.
        4,000원
        366.
        2015.10 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        목적 : 본 연구는 핸드 사이클 선수 및 동호인을 대상으로 현재 사용 중인 핸드 사이클 사용 실태 및 만족도를 조사하고 향후 한국형 핸드 사이클 개발을 위한 기초자료로 활용하고자 한다. 연구방법 : 현재 핸드 사이클 선수로 등록이 되어 있거나 핸드 사이클 동호회 회원으로 활동하고 있는 장애인 22명을 대상으로 설문조사를 실시하였다. 설문지는 대상자의 일반적인 사항 8문항, 핸드 사이클 사용 및 만족도 문항 15문항으로 구성되었다. 조사기간은 2014년 10월~11월이었다. 결과 : 대상자의 60% 이상이 핸드 사이클 사용 중 혹은 사용 이후에 통증이 있다고 답하였고, 가장 많이 통증을 호소한 부위는 어깨였다. 현재 사용하고 있는 핸드 사이클은 100% 수입품이며, 가격대는 500만원 이상으로 구입처 및 가격 만족도가 낮은 것으로 나타났다. 또한 사용하는 핸드 사이클 형태는 좌식(46.1%), 와식(38.5%), K-Type(15.4%)로 대상자 대부분이 보통 이상의 만족도를 보였다. 그립 및 브레이크는 손잡이형(53.8%)이 가장 많았으며, 역시 보통 이상의 만족도를 보였다. 결론 : 본 연구를 통해서 핸드 사이클 형태 및 구성품에 대한 만족도는 보통 이상이었으나, 대상자 대부분이 통증을 호소 하고 있다는 것을 알 수 있었다. 앞으로 한국형 핸드 사이클 개발을 위한 기초자료로 본 연구 자료가 활용되기를 기대해 본다.
        4,000원
        374.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Carbon composites for flexible fiber heating element were examined to improve the electrical conductivity in this study. Carbon composites using carbon black, denka black, super-c, super-p with/without CNF or dispersant such as BCS03 and Sikament-nn were prepared. Carbon composite slurry was coated on plane film and yarns(cotton, polyester) and the performances of prepared heating materials were investigated by checking electrical surface resistance, adhesion strength. The plane heating element using carbon black under natural drying condition(25℃) had better physical properties such as surface resistance(185.3 Ohm/sq) and adhesion strength(above 90%) than those of other carbon composite heating elements. From these results, polyester heating element coated by carbon black showed better electrical line resistance(33.2 kOhm/cm) than cotton heating element. Then, it was found that polyester heating element coated by carbon black with CNF(3 wt%) and BCS03(1 wt%) appeared best properties(0.604 kOhm/cm).
        4,000원
        375.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study seeks to identify effects derived from emotional labor in the distribution industry, and draw ways to systematically manage the employees by exploring effects of the emotion work on performance. For the purpose, literature reviews and empirical experiments were conducted to find out effects of emotional labor and false face acting on emotion work and organizational performance and effects of social support and job autonomy on the relationship between emotion work and organizational performance. To verify the hypothesis, we conducted a hierarchical regression analysis and structural equation model analysis using SPSS 20 and AMOS19. The result of the verification in this study is as follows: First, effects of emotional labor on burnout was found to be statistically significant, second, as for the path-coefficient for “emotional labor→emotion work” and “emotional labor → job satisfaction” was not statistically significant, while the path-coefficient for “emotional labor → service level” was found to be statistically significant. Third, effects of emotion work on job satisfaction was found statistically significant, fourth, emotion work on the service level was found statistically significant, fifth, effects of false face acting on emotion work was found statistically significant, sixth, effects of false face acting on burnout was statistically significant, seventh, moderating were found statistically significant and lastly, moderating effects of the relationship between emotion work from job autonomy and organization performance was not verified in job satisfaction, while emotion work, job autonomy, and interaction variable in service level were statistically significant.
        5,100원
        376.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Objective : The purpose of this study is to conduct parent education about autism spectrum disorders with sensory modulation disorder and coping skills for parents to nurture. After parental education participation to verify the effects of parenting stress and parenting efficacy.Methods : The study subjects were conducted with mothers Gwangju and Jeonju 20 people twice a week to target a total of seven sessions of four weeks. Research tools to measure the effectiveness of parent education parenting stress (Korean-Parenting Stress Index; K-PSI) and parenting efficacy (Parenting Sense of Competence; PSOC) was used for tests. Data analysis was performed using SPSS Version 18.0.Results : After a parent education parenting stress was statistically significantly decreased in all categories (p<.001). Influence on the child area has shown that most parenting stress the ‘reinforce parent’ impact on the parent area parenting stress is ‘attachment’ appeared to be the largest of its kind. Parenting Efficacy was also statistically significantly improved in all categories (p<.001).Conclusion : In this study, conducted by a parent education program have reduced parenting stress of mothers to nurture and was confirmed to be effective in promoting parenting efficacy.
        4,900원
        377.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Objective : The purpose of this study was to investigate the effects of Expiratory Muscle Strength Training (EMST) on the suprahyoid muscle activation and swallowing function of stroke patients.Methods : This study randomly assigned 21 stroke patients to an experimental group and a control group. Four-week EMST was performed at resistance of 70% of the maximum expiratory pressure with the experimental group and at resistance of 20% of that with the control group. Evaluation was conducted using surface Electromyographic (sEMG), Videofluoroscopic Dysphagia Scale (VDS), and Penetration-Aspiration Scale (PAS) based on Videofluoroscopic Swallowing Study (VFSS).Results : There was a statistically significant difference in the activation of the suprahyoid muscles using sEMG of the experimental group (p<.05) while there was no significant difference in that of the control group. Both group showed significant difference in the pharyngeal phase of VDS and PAS. Also in the comparison of variation in VDS and PAS before and after the intervention, there were statistically.Conclusion : Finding from this study confirmed that EMST applied 70% maximum expiratory resistance would be a remedial method which could help activate pharyngeal dysphagia patients’ suprahyoid muscles and improve swallowing function.
        4,500원
        378.
        2015.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Objective : The purpose of this study was to compare the participation and influencing factors between rural and urban elderly and to identify their affecting factors.Methods : Data were collected from 77 rural and urban elderly. The instruments used in this study were Korean version of Mini-Mental State Examination (MMSE-K), Outpatient Physical Therapy Improvement in Movement Log (OPTIMAL), Korean form of Geriatric Depression Scale (KGDS), Rosenberg Self-Esteem Scale (RSES) and Utrecht Scale for Evaluation of Rehabilitation-Participation (USER-Participation). Data were analyzed using a chi-Square test, t-test, Pearson’s correlation and multiple regression.Results : All four functions had a statistically significant correlation with their participation. There were significant differences in factors relating to participation between the rural and urban elderly. A high level of negative correlation was found between participation and depression in rural elderly (r=-.486, p<.01), and a high level of positive correlation was found between participation and self-esteem in urban elderly (r=.598, p<.05). The main affecting factor was self-esteem in the urban elderly (p<.01).Conclusion : There were differences in the participation and influencing factors between rural and urban elderly, and the rural elderly were found to have more weaknesses than those from an urban area. An intervention program for participation should be designed differently between those from rural and urban areas.
        4,200원
        379.
        2015.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The goal of this study is to show that the investigate is preference of beetroot cookie is preferred by consumers and can help to replace calcium, which is depleted because of the stress. As the amount of beetroot powder is increased, pH value, spread factors, loss and leaving rates, and texture properties of cookies were decreased. As a result of the measuring of colorimetric characteristics, the values of “L”, “a”, “b” were all decreased as the amount of beetroot powder was increased. The cookies containing 30% of beetroot powder was estimated as the most suitable to eat because of the flavor, color, and taste of the beetroot. But cookies having 20% of beetroot powder were estimated as the best to eat because of the texture, sticking power, hardness, and general preference. According to the results, the cookies containing 20% of beetroot powder were selected as the most suitable cookies to eat.
        4,000원
        380.
        2015.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study analyzed consumers’ awareness, preference levels, and effect expectations in relation to fashion art marketing according to the types of such marketing (collaboration between fashion and art in fashion products, called product collaboration; sponsorship for art foundation; artist sponsorship; collaboration for the design of a space/store/display; ad/promotional film collaboration). The study also investigated the influence of consumers’ attitudes toward fashion art marketing with respect to purchase intention. The study was implemented through a descriptive survey method. The sample consisted of 342 men and women between the ages of 20 and 45. The data were analyzed by factor analysis, one-way ANOVA, and multiple regression analysis. The results revealed that there are significant differences in consumers’ awareness and effect expectations in relation to fashion art marketing according to the types of fashion art marketing activities. While no differences were found in preference levels according to the type of fashion art marketing, all the types of art marketing showed overall high levels of preference. The collaboration between fashion and art in fashion products, which had the highest awareness, also showed the highest expected effect. In all the types of fashion art marketing, consumers’ attitudes had a significant influence on purchase intention. In cases of sponsorship for an art foundation, artist sponsorship, collaboration for the design of a space/store/display, and ad/promotional films, consumers’ effect expectations had the most significant influence on purchase intention, followed by preference and awareness level. These results could be used to provide appropriate proposals to fashion brands when they plan to set up an art marketing strategy.
        4,800원