• Proceedings of the Korean Vacuum Society Conference
• /
• 2015.08a
• /
• pp.244.2-244.2
• /
• 2015

염료감응형 태양전지(DSSC)는 친환경성과 저렴한 제조공정이 장점으로 최근에 많은 관심을 받고 있다. 현재에는 DSSC를 다양한 반도체 나노입자를 염료에 흡착시키거나, 무반사 코팅등 광학적인 접근을 통해 효율을 증가시키려는 실험이 활발히 진행되고 있다. 다른 한편으로는 DSSC의 효율을 떨어뜨리지 않으면서 DSSC의 장점인 저렴한 제조단가를 더 줄이는 연구가 진행되고 있다. 본 연구에서는 DSSC의 재료물질 중 가장 비싼 편인 Pt 박막을 다른 물질로 대체하기 위해, 몇 가지 공정을 거쳐 추출한 carbon을 사용하였다. 전형적인 DSSC 제작을 위해, FTO glass와 TiO2, 액체전해질을 사용하였고, 제작된 carbon 물질을 solvent에 섞은 뒤 counter electrode에 닥터 블레이드 방식으로 바르고 열처리하였다. 제작된 carbon을 분석하기 위해서 scanning electron microscope (SEM)과 X-ray diffraction (XRD)를 사용하였으며, counter electrode에 carbon을 사용한 DSSC는 Pt 박막을 사용한 일반적인 DSSC와 비교하였을 시에 만족할 만한 효율을 보이는 것을 확인하였다.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.33 no.2
• /
• pp.447-450
• /
• 2004

Overall migration through epoxy layer coated wood was investigated to estimate the coating thickness satisfying the regulatory limit. As an index of overall migration, KMnO$_4$ oxidizable extractives by the food simulant water solution was used. Migration pattern in interest range could described by a simple diffusion model and the temperature dependence of the permeability index could be explained by Arrhenius equation. The thickness of epoxy coating greater than 0.004 mm was analyzed to be required for satisfying the regulatory guideline.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2013.05a
• /
• pp.244-247
• /
• 2013

본 논문에서는 목적지들의 중요도를 이용하여 강화학습에 의한 목적지 경로 탐색을 제안한다. 일반적인 목적지 경로탐색은 목적지의 중요도나 방문빈도를 고려하지 않는 최단경로탐색을 수행한다. 그러므로 방문객들의 요구에는 맞지 않는 경로를 탐색한다. 강화학습의 특징은 관심 대상에 대한 구체적인 지배 규칙의 정보 없이도 최적화된 행동 방식을 학습시킬 수 있는 특징이 있다. 이를 이용하면 주요목적지를 누락시키지 않고 방문객들의 요구에 만족하는 경로를 탐색할 수 있다. 기존에 이용되고 있는 경로탐색 알고리즘과 강화학습기법이 적용된 알고리즘을 서로 분석하여 비교한다.

• Journal of dental hygiene science
• /
• v.11 no.2
• /
• pp.121-127
• /
• 2011

This study was conducted to improve patients satisfaction by comparing patients expectation prior to the implant therapy to patient satisfaction after the implant therapy. The data of 158 patients with dental implant in Seoul, Gyeonggi-Do and Cheonan city was obtained. The results are as follows : 1. 40.5% of patients placed one implant and 36.1 % of patients answered that the average cost for each implant is from 1,500,000 to 2,000,000won. 23.4% of them answered they decided to have implant because no tooth preparation is required. 2. Overall, the expectation level for implant therapy in general properties, women showed higher level of expectation than men. Especially, 'Implant has a longer life than other denture' showed significant difference between women(4.29) and men(3.87). Expectation by age, 'Implant has similar color and shape' was found the highest in age 20(4.38). Satisfaction by general properties, 'No tooth preparation required' was found the highest in age 20(4.57) and was statistically significant(p<.002). 3. Comparing patients' expectation prior to implant therapy to satisfaction afterward, 'Implant prevents jawbone resorption and keeps facial appearance' showed 3.7 of expectation but satisfaction was found increased to 3.87(p=.020). No tooth preparation required' was found 3.95 in expectation prior to implant therapy but after therapy it was found 4.23 in satisfaction (p<.001). 4. Overall satisfaction in implant therapy was found 4.25, recommendation to other patients was found 4.18 and repurchase was found 4.17.

• Journal of the Korean Society of Radiology
• /
• v.15 no.7
• /
• pp.1031-1040
• /
• 2021

In this study, the actual condition of ultrasound examination was conducted for radiological technologist working across the country. The measuring tool of the study was a questionnaire, and it was targeted to radiological technologist engaged in ultrasound examination at medical institutions located across the country from February 01 to July 31, 2021. In consideration of the COVID-19 situation, 431 questionnaires suitable for research were analyzed using the SPSS/PC Ver 18.0 program using email and SNS in a non-face-to-face manner. The general characteristics of study subjects, ultrasound examination job characteristics, and job satisfaction factors were analyzed using descriptive statistics. As a result of analyzing the job characteristics of radiological technologist who perform ultrasound examination as overall job satisfaction, the overall job satisfaction was 3.30 ± 0.56. The job satisfaction level of radiological technologist performing ultrasound examinations was higher than the average of 3.0 points, indicating a higher job satisfaction level than the average. Since insurance coverage for ultrasound examinations started, many radiological technologists have been very interested in ultrasound examination work. Therefore, the Korean radiological technologists of Association and radiological technolgists engaged in ultrasound examination more attention and effort should be put into strengthening professionalism.

• Journal of Korea Port Economic Association
• /
• v.25 no.1
• /
• pp.223-248
• /
• 2009

The purpose of this empirical study is to examine and explore the relationships between three variables; shipping companies' service quality, customer satisfaction and customer loyalty. Special features of this study could be summarized as following. First, this is empirical study based on market research according to the definition of 'customer' as freight forwarders and actual exporter/importer together contrary to previous studies. Second, to evaluate shipping companies' service quality, 5 components of SERVPERF model was used. Third, to test correlations between 3 variables; service quality, customer satisfactions and customer loyalty, statistical analysis was used with tools of SPSSWIN ver 15.0 and AMOS ver 7.0. For effective study, many thesis have been obtained through literature survey. However, major results were compiled from directly structured questionnaire, which were collected from Korean import/ export companies and freight forwarders.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.12
• /
• pp.414-422
• /
• 2017

This study was conducted to analyze the effects of motivation and satisfaction with continuing education on the intention to participate in college continuing education programs among adult learners. and participation of continuing education to improve the quality of Continuing education programs operated by College and to develop diverse educational programs that reflect the needs of adult learners and increase their participation rate. This study analyzed data collected from 412 adult males and females taking courses at the Lifelong Education Center in four professional universities in Gyeonggi-do from May 1 to June 20, 2017. Data analysis was performed using SPSS Version 21.0 program, and general characteristics of the subjects were used. Descriptive statistics, t-tests and ANOVA were used to identify differences in participants' motivation, satisfaction with education, and intention to participate. Participants' motivation, satisfaction with education, and intention to participate were analyzed by Pearson's correlation. Participants were analyzed by stepwise multiple regression analysis. There was a significant positive correlation between motivation for participation in college continuing education programs, intention to participate in education programs, and intention to participate. The factors influencing participants' motivation for participation were participation motivation and education satisfaction 41.2%.The results of this study suggest that it is necessary to develop and operate a program considering the factors that can improve motivation for participation and educational satisfaction to increase learner motivation.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.2
• /
• pp.397-404
• /
• 2018

This study was conducted to validate the effects of the disabled like program on the interest, attitude, satisfaction with daily life and sympathy among nursing university students. Overall, 70 nursing students were investigated in this study. The program contents included experiences simulating those of physically and visually handicapped persons. On the first day of the program, two study assistants measured the general characteristics, interest level, attitude, satisfaction with daily life, sympathy and meaning of nursing among study subjects. These factors were then measured again using the same form after completion of the program. The interest level among disabled persons was significantly increased after the program (t=-6.191, p<0.001), and also seven items on the attitude changes to the disabled persons were significant (p<0.001). After the program, participant's satisfaction with their daily lives increased significantly (t=-5.465, p<0.001), as did their sympathy for disabled persons (t=-6.125, p<0.001). In addition, the meaning of nursing increased significantly after the program (t=-6.125, p<0.001). Taken together, the results of this study showed that the disabled like program experience had positive educational effects.

• Journal of Digital Convergence
• /
• v.17 no.10
• /
• pp.329-337
• /
• 2019

This study is a descriptive research designed to determine the effects of nurses' image and major satisfaction on nursing students' career identity. For this purpose, the study made a questionnaire survey of 117 nursing students attending at K college located B city. Data collected from the survey were analyzed using SPSS 22.0 program. The findings of this study can be summarized as follows. First, participants showed significant differences in nursing students' career identity on grade and motivation of entrance. Second, there were correlations between nurses' image and nursing students' career identity and also between their major satisfaction and career identity. Third, nursing students' career identity was influenced by their relationship satisfaction between professors and students, which are sub-factors of major satisfaction, but nurses' image did not influenced their career identity. Therefore it is needed to provide nursing students with educational and interventive programs that help their better their relationship satisfaction between professors and students, continuous attention and guidance are necessary to facilitate communication and career guidance between professors and students.

• Journal of Korea Spatial Information System Society
• /
• v.6 no.2 s.12
• /
• pp.85-95
• /
• 2004

Nowadays, the interests in travel are increasing with the changes into the ubiquitous computing environments, hence, our location-based travel information service system would be potentially invaluable to graft the Internet business models. Most of existing travel information services are provided in a one-way push manner from the contents providers to users, and they have drawbacks of enforcing users to search their needed information with the general Web surfing. Therefore, this paper propose the travel information system for gathering user information and for providing services that satisfy user requirements by filtering based on these information.