• Proceedings of the Korean Vacuum Society Conference
• /
• 2011.08a
• /
• pp.71-71
• /
• 2011

Dye-sensitized solar cells (DSCs) have drawn great academic attention due to their potential as low-cost renewable energy sources. DSCs contain a nanostructured TiO2 photoanode, which is a key-component for high conversion efficiency. Particularly, one-dimensional (1-D) nanostructured photoanodes can enhance the electron transport for the efficient collection to the conducting substrate in competition with the recombination processes. This is because photoelectron colletion is determined by trapping/detrapping events along the site of the electron traps (defects, surface states, grain boundaries, and self-trapping). Therefore, 1-D nanostructured photoanodes are advantageous for the fast electron transport due to their desirable features of greatly reduced intercrystalline contacts with specified directionality. In particular, anodic TiO2 nanotube (NT) electrodes recently have been intensively explored owing to their ideal structure for application in DSCs. Besides the enhanced electron transport properties resulted from the 1-D structure, highly ordered and vertically oriented nanostructure of anodic TiO2 NT can contribute additional merits, such as enhanced electrolyte diffusion, better interfacial contact with viscous electrolytes. First, to confirm the advantages of 1-D nanostructured material for the photoelectron collection, we compared the electron transport and charge recombination characteristics between nanoparticle (NP)- and nanorod (NR)-based photoanodes in DSCs by the stepped light-induced transient measurements of photocurrent and voltage (SLIM-PCV). We confirmed that the electron lifetime of the NR-based photoanode was much longer than that of the NP-based photoanode. In addition, highly ordered and vertically oriented TiO2 NT photoanodes were prepared by electrochemical anodization method. We compared the photovoltaic properties of DSCs utilizing TiO2 NT photoanodes prepared by one-step anodization and two-step anodization. And, to reduce the charge recombination rate, energy barrier layer (ZnO, Al2O3)-coated TiO2 NTs also applied in DSC. Furthermore, we applied the TiO2 NT photoanode in DSCs using a viscous electrolyte, i.e., cobalt bipyridyl redox electrolyte, and confirmed that the pore structure of NT array can enhance the performances of this viscous electrolyte.

• Journal of The Korean Association of Information Education
• /
• v.16 no.1
• /
• pp.123-130
• /
• 2012

As a sequel of "special improvement act for gifted student education" legislated on January 2000, "regulation act for gifted student education" was published on April 2002 which is the time Korea has settled down its education for the gifted. Announced in the December 2007 "general plan for development of gifted student education" provided a platform for the gifted student education in Korea of growth in quantity, in which a plan of providing gifted student education up to 1 percent of the elementary and middle school level students (approximately 70 thousands) has been established while the education currently provides to 0.59 percent (40 thousands) of all students. Until recently, however, education for gifted students has been performed based on the way of concentrating on academic domains. and it has put more weights on mathematics and english domains. In order to overcome this drawbacks, there have been various attempts for growth in quality of education for gifted students, one of them is the our proposal of convergence of science and art education for cultivating 21 century creative humans through establishment of new type of institution. In this paper, education curriculum and management strategies appliable to the proposed convergence education institutions for gifted students. For this purpose we derived the implication points through analysis on education processes used in korea science school for the gifted students, a representative institution for the gifted students in Korea, and we suggested educational process curriculums for the science and art institute for gifted students along with the detailed contents of convergence subject which is an essential subject to the institute.

• Journal of Digital Convergence
• /
• v.13 no.9
• /
• pp.397-407
• /
• 2015

The purpose of this study was to investigate the relationships among daily hassles, self-efficacy, and stress responses of RN-BSN (Registered Nurses-Bachelor of Science in Nursing) students in juggling both their jobs and learning as an adult learner of distance education in digital convergence era. The data were collected by a questionnaire from 229 nurses in a RN-BSN course of an open university from October to November, 2013. The mean score of facing task dimension was much higher than the interpersonal dimension score among daily hassles. The academic problem of the facing task and the family relationship of the interpersonal were the highest respectively. The mean score of self-efficacy was slightly higher than the median. Multiple regression showed that perceived health status, workload, occupation satisfaction, and values problem of daily hassles explained 44.2% of stress reponses and values problem was the main factor influencing stress responses. The distance education policies and strategies were required to manage their stress for the adult learners of distance education in digital convergence era.

• The Journal of the Convergence on Culture Technology
• /
• v.8 no.1
• /
• pp.313-320
• /
• 2022

Recently, the keyword 'convergence' has emerged in the education field. The voice of demand for the humanities is also increasing. The range of convergence of the humanities is gradually spreading to various fields such as science, technology, engineering, and the arts field. And also, the trend is to nurture the future creative convergence talent with logical, comprehensive, and creative thinking through the fusion of humanities, scientific, and empirical theories. Myths and legends contain the content of humanity's culture creation and deal with matters such as religion, philosophy, art, and science. Therefore, through the consciousness of the ancients who lived in the so-called convergence era when academic differentiation did not occur, it will be possible to reflect on the appearance of sages. In this paper, we propose a method for educating Chinese culture through the analysis of by Wen Yi-Duo, a famous Chinese scholar. He sought to find the origin of Chinese culture through myths and legends and to find national identity by restoring the concept of national culture in the period of origin. The myths and legends of China are closely related to the cultural phenomena of modern China, which will further enhance our understanding of China.

• Journal of Digital Convergence
• /
• v.11 no.12
• /
• pp.685-696
• /
• 2013

The purpose of the present study is to explore the career development barriers of female doctoral degree holders in education. The study occupied in-depth interview with 42 female doctoral degree holders in education. The results were as followed; First, academic advisor highly influenced the career development female doctoral degree holders through their academic activities. Second, they had experiences regarding glass ceiling effect in workplace. Third, marriage was a critical issue for both of the married and single female doctoral degree holders. Fourth, family and relatives' support positively impact on their career will, and also their strong career goal was beneficial way to break their career barriers. Also, the study suggested contextural factor was very significant on career behavior of female doctoral degree holders. Therefore, policy maker, scholars, and students should have strong attention to female students' career guidance and development in various way. The results of the study discussed in relation to the existing literature, with reference to women's career development and career barriers, and then implication for the future research were suggested.

• Journal of Digital Convergence
• /
• v.10 no.3
• /
• pp.1-12
• /
• 2012

According to recent trends of ubiquitous learning with the advent of smart devices, this study was to suggest for the successful achievement of "Smart Campus" initiatives by experiencing an instruction with smart-pads (tablet PCs) in a university. A pilot project was conducted as a part of building a Smart Campus in S university in Gyeong-gi Province in Korea for the study. The class was held in the Summer semester in 2011 with six participants. Using research methodologies such as semi-structured interviews and stimulated recall, perceived academic performances, satisfaction, and the usability of smart-pads were analysed. Main results included high perceived academic performances, satisfaction, and the usability, however, some negative responses also detected on the variables. Based on the results, it was suggested that specific instructional strategies should be developed in terms of hardware, software and humanware.

• Journal of Digital Convergence
• /
• v.11 no.4
• /
• pp.431-441
• /
• 2013

The aim of this study is to reinterpret the image on a Korean tradition known as Bang-wee-shin-sang (an image of direction deity), and to revive the image into Jikimee (the guardian). In particular, this research re-analyzed the image and the symbol of Bang-wee-shin-sang and effectively designed the tradition to fit the modern living space. The theoretical study is to explore why it is necessary to redesign Bang-wee-shin-sang to accommodate modern living after examining the background and origin of typical Korean traditions such as Four Deity painting, Chinese Zodiac, and Four Kings' Painting. As a previous study, we examined the procedures of making Jikimee which was based on artists' works that utilized historical artifacts. The study indicated that Bang-wee-shin-sang is a vital resource to disseminate the unique characteristics of Korea and its tradition which played a role in linking the past and the present. Consequently, it is discussed that the utilization of modernized Jikimee in smart environment must be supported by foundation of academic system, the effort of academic and research link, and government funding policy.

• Journal of Digital Convergence
• /
• v.18 no.11
• /
• pp.19-29
• /
• 2020

The study aims to examine the effectiveness of flipped learning teaching methods by using learning analytics to enable effective programming learning for non-major students. After designing a flipped learning programming class model applied with the ADDIE model, learning-related data of the lecture support system operated by the school was processed with crawling. By providing data processed with crawling through a dashboard so that the instructor can understand it easily, the instructor can design classes more efficiently and provide individually tailored learning based on this. As a result of analysis based on the learning-related data collected through one semester class, it was found that the department, academic year, attendance, assignment submission, and preliminary/review attendance had an effect on academic achievement. As a result of survey analysis, they responded that the individualized feedback of instructors through learning analysis was very helpful in self-directed learning. It is expected that it will serve as an opportunity for instructors to provide a foundation for enhancing teaching activities. In the future, the contents of social network services related to learners' learning will be processed with crawling to analyze learners' learning situations.

• Journal of Digital Convergence
• /
• v.18 no.11
• /
• pp.31-41
• /
• 2020

This study analyzed parents' school satisfaction longitudinally using data from the 1st, 3rd, and 5th wave data of the Korea Education Longitudinal Study(KELS)2013. The subjects of analysis are parents who responded without dropping out in the first, third and fifth panel of the KELS2013, and 4,227 cases that had no missing values in the variables were selected for the sample to input for analysis of the latent growth modeling(LGM). As a result, it is confirmed that the parents' education, educational support, and children's academic achievement have a positive effect on the parents' school satisfaction. But the parents' educational view and education cost have a negative effect on that. The results of this study are expected to be important information to help enhance the primary function of the school.

• The Journal of the Convergence on Culture Technology
• /
• v.6 no.3
• /
• pp.91-98
• /
• 2020

Since disaster-safety accidents cause serious damage to human life and property, preparations and responses have been critically challenged by the country and industry. Recently, the government and industry have recognized its importance and are seeking solutions to the causes of disasters in various ways. If virtual reality technology is actively used, it will be easier to prepare and train for disasters, as the social costs will be reduced. However, academic research on this has not been actively studied. In particular, it seems difficult to seek data that comprehensively analyzes or organizes disaster-safety with virtual reality contents. In this paper, we analyze the current status of domestic and overseas focused on virtual reality disaster/safety contents, examine its characteristics, and point out the direction required for advanced service in the future. To this end, the implications of the numerical data of the accident type have been derived, and the direction of development of public institutions, academic research, and industry have also been investigated. Finally, technical considerations are presented as well.