• 한국항공운항학회지
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• 제30권3호
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• pp.38-53
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• 2022

Recently, the acquisition and production of information using digital tools and the creation of new knowledge are emphasized as important educational elements. Therefore, in this study, the effect of learning achievement according to the digital literacy level of college students was analyzed. For the analysis, a questionnaire is conducted with college students majoring in aviation services attending universities in Seoul Capital Area and Chungcheong area. To verify the hypothesis of the study, demographic characteristics are identified based on the questionnaire, reliability and validity of measurement items are verified, and structural equation model analysis is performed to verify the hypothesis. The analysis results are as follows. First, among the sub-factors of digital literacy competency of college students majoring in aviation service, 'technology use' is found to have a positive effect on 'cognitive flow' and 'emotional flow' of learning flow except 'behavioral flow'. Second, among the sub-factors of digital literacy competency, 'self-learning' is found to have a positive effect on 'cognitive flow', 'emotional flow', and 'behavioral flow' in learning flow. Third, the sub-factors of learning flow, 'cognitive flow', 'emotional flow', and 'behavioral flow' have a positive effect on 'learning satisfaction'. Fourth, 'learning satisfaction' is found to have a positive effect on 'learning outcomes'. Based on the research results, practical support measures and strategies for educational success are presented.

• 한국전산유체공학회지
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• 제7권3호
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• pp.17-26
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• 2002

Computational fluid dynamic(CFD) analysis has been frequently applied to the waste incinerators to understand the flow performance for various design and operating parameters. Since the computational modeling inevitably requires many simplifications and complicated sub-models, validity of the results should be carefully evaluated. In this study, major computational modeling and procedure of usual simulation methods for the grate-type waste incinerators were assessed. Usual simulation method does not explicitly incorporate the waste combustion, simply by assuming the combustion gas properties from the waste bed which is treated as an inlet plane. However, effect of this arbitrary assumption on the overall flow pattern is not significant, since the flow pattern is dominated by strong pattern of jet flows of the secondary air. Thus, this method is valid in understanding the effect of flow-related parameters. In analyzing the results, deriving conclusive information directly from temperature and chemical species concentration should be avoided, since the model prediction for the gaseous reaction and the radiation reveals significant discrepancies against the actual phenomena. Use of quantitative measures such as residence time is very efficient in evaluating the flow performance.

• 한국경영과학회지
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• 제39권3호
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• pp.93-115
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• 2014

In collaborative product development with multiple suppliers, buyers must manage the suppliers' activities. This empirical research investigates the performance impacts of three strategies that buyers use to manage suppliers who design interdependent components. These strategies are: Instructionism (giving clear instructions to suppliers), Teaming (forming an interactive development team with suppliers), and Delegation (transferring component development responsibilities to suppliers). Data were collected through a cross-industry web-based survey of buying firms in manufacturing industries whose products require multiple, interdependent components. A path analysis utilizing 318 survey responses indicates that Instructionism has a positive effect on design quality, and Teaming has a positive effect on design quality and component innovation. The use of Delegation is not related to any of the performance indicators. The practical implication of this research for product development managers is that both Instructionism and Teaming can be effective strategies. For the purpose of assuring design quality, a buyer should give clear instructions in detailed specifications or work closely with suppliers in development teams. If competitive priority is product innovativeness, however, the buyer should work closely with its suppliers during component development processes using a Teaming strategy.

• 한국조리학회지
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• 제23권5호
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• pp.129-139
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• 2017

The necessity of selecting food based on correct information through nutrition ingredients included in the food is being emphasized due to the recent increase in interest of restaurant users in healthy and safe food. This study verified the structural causal relationship among consumer attitude, use reason and health-consciousness regarding nutrition information labeling and their satisfaction and revisit intent. A total of 266 surveys conducted over restaurant users residing in the Busan area was used for the final analysis of the study to attain this study's objective. The suitability of the Structural Equation Modeling and organic causation relationship was verified through the statistics programs SPSS (V 23.0) and AMOS (V 21.0) in order to attain this study's objective, and the control effect of age has been verified. The results showed that a meaningful causal relationship was confirmed in all elements excluding consumer attitude. A control effect was also confirmed in the influential relationship between use reason and satisfaction level. The results of the study suggested that the nutrition information labeling system of restaurants provides practical implications and marketing strategies for restaurant managers and government policy makers.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2003년도 학술.기술논문발표회
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• pp.73.2-79
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• 2003

The purpose of this study is to provide the basic data on the optimum method for interfacial separation for an effective recycle of concrete waste by using the thermal properties of concrete. Therefore, this study is proceeded by dividing the interface of concrete into cement paste and fine aggregates or mortar and coarse aggregate, considering the aspect of recycled cement and aggregate as the recycling use of concrete waste. As results of the experiment, in case of recycle cement, the interfacial separation is easily appeared, but it is shown that the mixed amount of powder included in fine aggregate doesn't greatly decrease. But, in case of recycle coarse aggregate, the effect of interfacial separation by preliminary heating is predominant. Especially, the bonding rate of mortar is the lowest when it is heated 5 times for 120 minutes at $300^{\circ}C$. Hence, it is considered that it will be an excellent effect of quality control when the results of this study is applied to a manufacturing system of recycle coarse aggregate which is about to put into practical use.

• 한국전문물리치료학회지
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• 제27권1호
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• pp.11-18
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• 2020

Background: As technology has progressed, various robot-assisted devices have been developed to reduce therapists' labor and assist in therapy. However, due to their many limitations, it is more practical to use traditional mechanical devices. The grahamizer is one such traditional mechanical device used clinically to rehabilitate the upper extremities. No study has yet established the efficacy of the grahamizer in individuals with stroke. Objects: This study investigated the immediate change in arm reaching after the use of a grahamizer. Methods: Twenty-two stroke survivors participated in this study (11 males and 11 females). The reaching of the more-affected arm was measured three times using the three-dimentional electromagnetic motion tracking system "trakSTAR". After the first measurement, the subjects performed 500 rotatory arm exercises using the grahamizer. To assess the grahamizer's effect, the subjects were remeasured in the same way. Results: There were significant increases in the reaching distance (p < 0.05) and movement smoothness (p < 0.05) of the more-affected arm after using the grahamizer. Conclusion: Our study confirms that using the grahamizer is beneficial in the rehabilitation for improving movement of the more-affected arm in stroke survivors.

• Spatial Information Research
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• 제14권3호
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• pp.261-270
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• 2006

GIS(Geographic Information System)은 컴퓨터와 인터넷의 출현과 더불어 발전을 해 왔고 이에 맞추어 사용자에게 다양한 서비스를 제공하고 있다. 차세대 Web을 뜻하는 Web 2.0은 불특정다수의 인터넷 사용자가 제공하는 정보가 집약되어 새로운 가치가 창출되는 비즈니스로 발전하고 있다. Web 2.0의 특징으로는 블로그, 롱테일 분포, SNS(Social Networking Service), UCC(User Created Contents), 집단지성 등을 들 수 있다. 본 연구는 Web 2.0의 특징을 이용한 가칭 GIS 2.0을 통해 현재 일방적이고 단순 자료 홍보적 성격의 공간정보제공 방법을 지향하고 쌍방향적이고 일반사용자 참여를 통해 완성될 수 있는 GIS 구축방법으로 전환하여 GIS 도입효과 및 활용을 극대화하는 서비스 모델을 제시한다.

• 한방안이비인후피부과학회지
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• 제21권2호
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• pp.19-27
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• 2008

Objective : The side effect of prolonged use of topical corticosteroids to skin is well-known. Moreover, resent studies have shown that prolonged use of systemic corticosteroids also negatively impacts skin barrier function. Corticosteroids have a major role in the practical management of many variable conditions. So, it is important to find the drug or the method which could protect the skin from the damage caused by corticosteroids. At former study, we investigated that Insamyangyoung-tang has some effect on skin barrier function of DNCB induced contact dermatitis hairless mice. So, this study was performed to research the effect of Insamyangyoung-tang on the TEWL with high dose steroid injected hairless mice. Method : Hairless mice were divided into 4 groups ; Control group, Group A, Group B and Group C. All groups were injected triamcinolone O.4mg for 10 times. Control group was medicated distilled water during the experimental period. Group A was medicated distilled water for 5 days before the $1^{st}$ injection day, and then medicated Insamyangyoung-tang extract during the experimental period. Group B was medicated Insamyangyoung-tang extract for 5 days before the $1^{st}$ injection day, and then medicated distilled water during the experimental period. Group C was medicated Insamyangyoung-tang extract for 5 days before the $1^{st}$ injection day, and then medicated Insamyangyoung-tang extract during the experimental period. TEWL of each group was measured for 5 times. After the $10^{th}$ injection, the tissue sample was made and the damage of epithelial cell was examined. Statistical significance was set at p<0.05 by using non parametric methods and repeated-anova.. Results : Group C showed significant effect on TEWL change of hairless mice evoked by triamcinolone injection. Group A and Group B also showed some effect, but there was no statistical significance.

• 한국가정과교육학회지
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• 제4권1호
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• pp.87-95
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• 1992

The purpose of this study is to suggest how we can get over the difficulties of practical drill under experimentation concerning the units of making clothes in the curriculum of home economics. The import of this study was based on the results of the preceding studies the field of the making Korean clothes, from the standpoint of the teaching tools and teaching materials by the use of VTR, is one of the most insufficient. On the one hand, the teaching procedure here a VTR, running 34 minutes or so, was made up with the process of making Korean men’s slacks, and was led by the researcher’s own. The contents of the lesson are as follows： the shape of Korean clothes, the name of each part, the process of drawing, cutting and sewing, and the items of evaluation and arrangement. On the other hand, the two comparative groups were made to compare one with the other： One group was taught by help of VTR media, and the other by the model performance and explanation of the instructor’s own. All of the statistical data were analyzed in terms of SPSS/PC, and t-verification was made, to make difference between the two, after standard deviation was calculated according to the classified domains. The consequences of the test research are shown as below： 1. The difference of understanding was obviously made in considering that the group made a better score than the comparative one in understanding to process of making Korean clothes. 2. The difference of skill was highly made in considering that the group made a better score than the comparative one in the practical drill of making Korean clothes. 3. The difference of interests was evidentally made in considering that the group made a better score than the comparative one in the stage of making Koran clothes. Such means that the motivation and attitude of the learners was made stimulate by the Audio-Visual material than by the traditional cramming method. 4. The difference of frequency was fairly made in considering that the experimeatal group made a better score than the comparative one in the frequency of individual teaching. 5. The difference of the efficiency of time-consumption was clearly made in considering that the experimental group made a better score than the comparative one. As the results of the research above, the medium of VTR proved to more effective to the achievement of schoolwork and the strategies of teaching. Therefore, more use of VTR media will help the instructors with the difficulties of practical drill in the whole process of making Korean clothes； Widely use of VTR media in teaching will be surely more fruitfull to the unit of making Korean clothes than teaching by explanation.

• 한국컴퓨터정보학회논문지
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• 제25권7호
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• pp.203-211
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• 2020

본 연구의 목적은 신유통 경험요소가 소비자의 사용의향과 소비자행복에 미치는 영향을 실증하고, 지각된 혜택의 매개효과를 연구하고, 다양한 소비 환경에서 소비자의 사용의향과 소비자행복을 향상시키기에 대해 시사점을 제공하고자 한다. 본 연구는 온라인 경험, 오프라인 경험, 물류 경험, 지각된 혜택, 사용의향, 소비자 행복에 대한 이론들, 기존의 선행연구들과 논의를 검토하였고 최종적으로 6개의 가설을 도출하였다. 이를 위해, 소비자의 사용의향과 소비자행복에 대하여 데이터를 수집하였다. 수집된 데이터에 대해 타당성과 신뢰성을 검토하였고, 구조방정모텔분석을 통해 가설을 검증하였다. 지각된 혜택의 매개효과를 중심으로 신유통 경험요소가 소비자의 사용의향과 소비자행복에 미치는 영향에 대한 연구 결과, 온라인 경험, 오프라인 경험, 물류 경험은 지각된 혜택에 미치는 영향, 지각된 혜택은 사용의향, 소비자 행복에 미치는 영향, 그리고 사용의향은 소비자 행복에 미치는 영향 모두 정(+)의 영향을 미치는 것으로 나타났다. 또한, 온라인 경험, 오프라인 경험, 물류 경험과 사용의향, 소비자 행복의 사이에 지각된 혜택의 매개효과를 하는 것으로 나타났다. 본 연구에서는 기존의 선행연구를 확정하여 신유통 경험요소가 소비자의 사용의향과 소비자행복에 미치는 영향을 실증함으로써 이론적, 실무적 시사점을 제공하였다.