• The Journal of the Korea Contents Association
• /
• v.11 no.2
• /
• pp.487-494
• /
• 2011

This paper is to investigate the efficacy of cyber education by self-assessment strategy. Self-assessment strategy contains self-monitoring function and self-control function. 202 students of online university attended and analyzed with frequency, correlation, t-test, Paired t-test. The major findings were as follows. The learners who experienced self-assessment in the initial stage of class had higher changes in social distance to the mentally disabled people positively than the learners who didn't experienced that. This self-assessment strategy can be assumed that it is effective strategy to improve e-learning efficacy and it will contribute to self-directed education for enhancement of on-line education.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.2
• /
• pp.83-91
• /
• 2011

Much research has been conducted on the e-learning systems for recommending a learning content to a student based on the difficulty of it. The difficulty is one of the most important factors for selecting a learning content. In the existing learning content recommendation systems, the difficulty of a learning content is determined by the creator. Therefore, it is not easy to apply a standard rule to the difficulty as it is determined by a subjective method. In this paper, we propose an ontology-based method for determining the difficulty of a learning content in order to provide an objective measurement. Previously, ontologies and knowledge maps have been used to recommend a learning content. However, their methods have the same problem because the difficulty is also determined by the creator. In this research, we use an ontology representing the IS-A relationships between words. The difficulty of a learning content is the sum of the weighted path lengths of the words in the learning content. By using this kind of difficulty, we can provide an objective measurement and recommend the proper learning content most suitable for the student's current level.

• The Journal of the Korea Contents Association
• /
• v.21 no.4
• /
• pp.14-25
• /
• 2021

The purpose of this study is to explore what are the interactive factors of synchronous online education in university and identify the level of interaction. This study used mixed research method. As a result of the interaction level, it was recognized that face-to-face education could be more interactive than synchronous online education. Synchronous online education could have better interactive between instructor and learner, and among learners than asynchronous online education. Factors which influencing the interaction were as follows: small group activities and scaffolding, diversification of communication channels and integration of learner's question in learning content. Detrimental elements were distance felt between instructor and learners, low intimacy among learners, content-focused lecture, restrictions on non-verbal communication, unstable systems and misusing microphones. The necessary factors to promote interaction are planning interactive class activities, etc. Based on the results, it was to suggest what kinds of efforts are needed to make interaction more effective in terms of teaching and learning method & activity, tool & system, and environment.

• Proceedings of the Korea Contents Association Conference
• /
• 2009.05a
• /
• pp.258-262
• /
• 2009

The perception type of this study were divided into three types in all through Q-methodology. Above all, this study is to investigate two points us. Points of this study ; First, how the type of the perception is divided on the subjectivity about Media Fortune-contents in Digital Age? Second, what is a trait of character in same or different quality within these types? The result reveal five type that divided '1 : Scientific Appeal Type ; N=10', '2 : Value-depended Type ; N=7', '3 : Positive Preference Type ; N=3'. It found that is very different type all over.

• 한국벤처창업학회:학술대회논문집
• /
• 2017.08a
• /
• pp.69-89
• /
• 2017

본 연구의 목적은 우리나라 대학의 도전적 창업문화 정착, 대학생의 창업역량 강화로 글로벌 경쟁력을 갖춘 창업 확대에 필요한 창업교육 방안을 제시하는 것이다. 4차 산업혁명 시대 창업의 국가경제적 의의와 함께 대학생의 진로 대안으로서 주목받고 있지만 우리나라 대학생의 창업인식은 낮은 수준에 머물고 있다. 대학생의 창업아이템이 글로벌 경쟁력을 갖출 만큼의 창의성이 뒷받침된 기술기반 창업과는 거리가 먼 경우가 많다. 최근 정부 및 대학에서 창업의 중요성을 인식하고 다양한 지원정책과 교육 프로그램을 운영하고 있다. 그러나 창업문화 확산을 통한 창업도전의 저변 확대, 시장과 산업 트랜드를 바꿀만큼의 시장 전환적이며, 창조적 파괴가 동반된 창업을 활성화하는 데에는 부족함이 많다. 이에 본 연구는 H대학교 신입생 1,092명을 대상으로 설문조사를 실시하여 대학생 창업인식을 분석하고 대학의 창업교육 고도화를 위한 유의한 사실을 발견하였다. 실태조사 결과를 이용하여 본 연구는 다음과 같은 창업교육 고도화 방안을 제시하였는데. 첫째, 생애주기적 진로대안으로서 창업의 의의 인식, 둘째, 학생의 개인적 특성에 기초한 맞춤형 창업교육 프로그램의 개발 운영, 셋째, 창업 전문성을 갖추면서 동시에 교육자로서의 역량을 갖춘 대학 내 외부 전문가들을 네트워킹하여 이론-실무의 우수한 창업 교육자 풀 구성 넷째, 효과적 창업교육 전략 및 프로그램 개발과 실행을 위한 구체적 대안으로 창업교육 목적의 명확화, 교육목적에 부합하는 실천적 교육 콘텐츠 개발 및 국내외 우수 창업교육 콘텐츠의 적극적 활용, 창의적 문제해결 능력 강화를 위하여 교육학적으로 효과적인 방법의 모색 등을 제시하였다.

• Journal of the Institute of Electronics Engineers of Korea CI
• /
• v.48 no.4
• /
• pp.27-34
• /
• 2011

In this paper, it was presented a design on the dynamic multimedia fingerprinting code for anti-collusion code(ACC) in the protection of multimedia content. Multimedia fingerprinting code for the conventional ACC, is designed with a mathematical method to increase k to k+1 by transform from BIBD's an incidence matrix to a complement matrix. A codevector of the complement matrix is allowanced fingerprinting code to a user' authority and embedded into a content. In the proposed algorithm, the feature points were drawing from a content which user bought, with based on these to design the dynamical multimedia fingerprinting code. The candidate codes of ACC which satisfied BIBD's v and k+1 condition is registered in the codebook, and then a matrix is generated(Below that it calls "Rhee matrix") with ${\lambda}+1$ condition. In the experimental results, the codevector of Rhee matrix based on a feature point of the content is generated to exist k in the confidence interval at the significance level ($1-{\alpha}$). Euclidean distances between row and row and column and column each other of Rhee matrix is working out same k value as like the compliment matrices based on BIBD and Graph. Moreover, first row and column of Rhee matrix are an initial firing vector and to be a forensic mark of content protection. Because of the connection of the rest codevectors is reported in the codebook, when trace a colluded code, it isn't necessity to solve a correlation coefficient between original fingerprinting code and the colluded code but only search the codebook then a trace of the colluder is easy. Thus, the generated Rhee matrix in this paper has an excellent robustness and fidelity more than the mathematically generated matrix based on BIBD as ACC.

• Journal of Digital Contents Society
• /
• v.2 no.2
• /
• pp.179-189
• /
• 2001

This paper aims at faster processing and retrieval in fingerprint identification systems by reducing the amount of preprocessing and the size of the feature vector. The distribution of fingerprint directions is a set of local directions of ridges and furrows in small overlapped blocks in a fingerprint image. It is extracted initially as a set of 8-direction components through the Gabor filter bank. The discontinuous distribution of directions is smoothed to a continuous one and visualized as a direction image. Then the center of the distribution is selected as a reference point. A feature vector is composed of 192 sine values of the ridge angles at 32-equiangular positions with 6 different distances from the reference point in the direction image. Experiments show that the proposed algorithm performs the same level of correct identification as a conventional algorithm does, while speeding up the overall processing significantly by reducing the length of the feature vector.

• The Journal of the Korea Contents Association
• /
• v.13 no.4
• /
• pp.273-280
• /
• 2013

This study aims to examine the influences of wearing an occlusal biteplane splint on balance of the body. 10 subjects were selected who had neither impaired occlusion and masticating systems nor difficulty in walking along with no medical history in temporomandibular joint. Measurements were conducted with the Fukuda stepping test, the limits of stability test. The level of significance, ${\alpha}$ to determine the statistical significance was .05. Fukuda stepping test and the limits of stability test were put to the Wilcoxon signed test. As a result of this study, there was a significant difference in the moving distance in the Fukuda stepping test (p<.05). In addition, there were significant differences in the results of the limits of stability test (p<.05). In conclusion, the results of this study suggest that wearing the occlusal biteplane splint has an positive influence on the balance of the boby.

• The Journal of the Korea Contents Association
• /
• v.16 no.11
• /
• pp.699-706
• /
• 2016

This study aimed to propose the necessity and system establishment of noise reduction facility via evaluating noise level exposed by the radiographer due to MRI scan. Noise measurements were carried out using at S general hospital in Daejeon using 1.5 Tesla MRI (7 exams) and 3.0 Tesla MRI (16 exams), while using SC-804 noise meter. The measurement distance was from the soundproof door of the MRI room to the radiographer which measured 100cm, and the measurement height, the height to the radiographer's ears when working, 100cm. The noise measured for each exam was an average of three measures per exam which observed the noise occurring in each sequence recorded every 20 seconds. As the results, the maximum of noise exposed by the radiographer is 73.3 dB(A), which is MRCP by the 3.0 Tesla device, and also the maximum of average noise is 66.9(3.1) dB(A), which is Myelogram by the 3.0 Tesla device. Average noise by each device is 61.9(4.1) dB(A) by the 3.0 Tesla device and 52.0(3.1) dB(A) by the 1.5 Tesla device, which comes to the result that the 3.0 Tesla MRI device is about 10 dB(A) degree higher(p <0.001). The noise level exposed by the radiographer does not affect auditory acuity, but the level is able to incur a non auditory effect. The reflect sound can be removed by installing curtains in the rear wall of MRI control room in order to reduce the noises, but, first of all, An institutional system is needed in order to prevent noise.

• The Journal of the Korea Contents Association
• /
• v.14 no.4
• /
• pp.189-210
• /
• 2014

The purpose of this study was to investigate the casual relationship among social activity, leisure activity and subjective quality of life of the rural elderly. For this end, this study analyzed the differences of the factors by the demographic characteristics and the effects of the social activity and leisure activity on subjective quality of life of the rural elderly. The data was collected using structured questionnaires, and total 324 responses were used in the data analysis. According to the results of this study, the social activity, leisure activity and subjective quality of life was shown to the partially differences by the demographic characteristics. The social activity and leisure activity of the rural elderly had a positive effect on the satisfaction and expectation of life as the subjective quality of life. The religious activities and leisure activity had a positive effect on the satisfaction of life, and the leisure activity through hobbies had a positive effect on the expectation of life. The economic activity had a positive effect on the subjective economic satisfaction, expectation of living standard and municipal government. Also, the volunteer activity and pastime had a positive effect on the subjective health satisfaction. Finally, this study was discussed the theoretical and practical implications as well as the solution to the subjective quality of life of the rural elderly.