• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.167-183
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• 2015

The purpose of this study is to examine the associations among family cohesion, self-efficacy, and school adjustment in adolescence. This study investigated these interrelationships using structural equation modeling. The results indicated that family cohesion had effects on school adjustment both directly and indirectly through self-efficacy. The mediating effect of self-efficacy was statistically significant. These results imply that family cohesion and self-efficacy need to be emphasized as a strategy to improve school adjustment among adolescents.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39B no.7
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• pp.467-476
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• 2014

Recently, various services which use the fused form of broadcasting and communication are being offered over the Internet globally. To provide various interactive services through connected smart TV on wired or wireless network, the seamless multimedia service is key feature. In this paper, Dynamic Adaptive Streaming over HTTP (DASH)is adopted to develop cost-effective adaptive streaming system for Open Hybrid TV(OHTV) service. This system can provide seamless adaptive streaming service for IP VOD, Video Clips, Ad insertion which are defined in OHTV.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.490-494
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• 2005

Multispectral image is wavelet trans formed and classified into one of three classes considering reference characteristics of the subband with the lowest resolution. Recently, aegis of authentitation and creator's copyright has become a matter of great concern by the diffusion of multimedia technique and the growth of the internet and the easily duplicated property of digital data. Consequently, many active researches have been made to protect copyright and to assure integrity by inserting watermark into the digital data. In this paper, watermark is repeated through the entire image and adapted to the content of the image.

• The Journal of the Korea Contents Association
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• v.7 no.12
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• pp.157-166
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• 2007

The Information society is accelerating it's speed of change with the IT technology at the center of it and the society as a whole is in the process of transition. The purpose of study is to reveal the information gap among the public servants of Chungbuk Province. For that reason this study on the information gap of the officers is considering the effectiveness of IT. First, A theoretical approach has been made about Information Divide. Second, the analysis of questionaire on the information divide use frequency analysis, means analysis, factor analysis, and t-test.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.9-14
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• 2011

This paper presents a new fast motion estimation method where search ranges are determined by the probabilities of motion vector differences (MVDs), which is an adaptive/dynamic search range (ASR) method. The MVDs' distribution is investigated and its parameter is estimated by the maximum likelihood estimator. With the estimated distribution, we show that the search ranges can be efficiently restricted by a prefixed probability for MVDs. Experimental results showed that the performance of the proposed method is very similar to that of the full search algorithm in PSNR but it enables significant reduction in the computational complexity. In addition, they revealed that the proposed method determine the search ranges much more efficiently than the conventional ASR methods.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.1-8
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• 2012

In this paper, we propose a rate-distortion optimization method to improve the coding efficiency of the conventional 3D-DCT based compression method using adaptive block mode selection for integral images. In the conventional 3D-DCT based compression method, 3D-DCT blocks of variable block sizes are adaptively selected depending on the characteristics of integral images, and then 3D-DCT is performed. The proposed method applies a rate-distortion optimization to determine the optimal block mode. In addition, we suggest the optimal Lagrangian parameter for integral images. Experimental results show that the proposed method gives bit-rate reduction of about 5%.

• Journal of Digital Contents Society
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• v.5 no.4
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• pp.295-299
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• 2004

In this paper, we compare and analyze the LMS ard RLS algorithm of IEEE802.15.3(HDR-WPAN) system. The LMS algorithm have two merits that easily embody and not complex, but convergence speed is slow. The RLS algorithm have fast convergence speed, but very complex. When equalization using LMS algorithm, it can achieve adaptive equalization after 250 sample in fading environment, but case of RLS algorithm can achieve adaptive equalization after just 50 sampls. The computer simulation proved that adaptive equalizer to fast equalization and stability of HDR-WPAN system is more effective using RLS algorithm then LMS algorithm.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.333-341
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• 2013

Purpose: The purpose of this study was to identify the relationship of self-differentiation, self-esteem and school adjustment among adolescents. Methods: The data were collected from 508 adolescents and analyzed using n (%), t-test, ANOVA, Scheffe test, Pearson correlation coefficient and multiple regression with the SPSS 16.0program. Results: First, School adjustment was different for grade, gender, level of mother's education, and economics level. Second, Subjects of self-differentiation was the average score 102 points, self-esteem average score 27.3 points and school adjustment average score 63.6 points.. Third, Self-differentiation and self-esteem had a significant positive correlation with school adjustment. Fourth, Stepwise multiple regression analysis showed that family regression, emotional cutoff, recognition emotional function and family projection in self-differentiation, self-esteem and gender(female), level of mother's education(above university), and grade(high) explained 46.5% of the total variance in school adjustment. Conclusion: Self-differentiation and self-esteem were confirmed as having an influence on school adjustment. We need to develop a nursing intervention program that can manage adolescent's school adjustment. When providing such programs, the family must be included.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.379-391
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• 2015

This study aims to understand family support and self-efficacy-mediated structural relation of college students' unemployment stress with their adaptation to school life. Findings of the research are summarized as follows. The study looked into how unemployment stress would directly affect self-efficacy, family support and adaptation to school life. It was found that the unemployment stress would have immediate negative effects on the self-efficacy, family support and adaptation to school life. In addition, the study noticed that with both family support and self-efficacy applied as mediating factors, unemployment stress influences college students' adaptation to school life indirectly and negatively. After the investigation on the immediate effects of family support in relation to the self-efficacy, the study indicated that family support has an immediate positive influence on the self-efficacy. In terms of self-efficacy, it appeared to affect adaptation to school life both positively and directly but, its indirect effects on the adaptation to school life was not confirmed. The study failed to find any direct influence of the family support on adaptation to school life but learned that the family support causes an indirect positive effect through self-efficacy, the mediating factor. In conclusion, the study suggests that adaptation to school life improves as long as unemployment stress decreases, while the family support and the self-efficacy are enhanced.

• The Journal of the Korea Contents Association
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• v.14 no.9
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• pp.275-284
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• 2014

This study verifies the influence of students' stress of their adjustment to school life and the mediate effect of social support and based on the results, to develop the programs improving the school life adaptation. For the purpose, the researcher collects some data from junior high school students in Gyeongnam area. The study results were as follows. First, it appeared that the school stress has a negative effect on the school support. that is, the study notice that juveniles with high stress gain low social support Second, it appeared that the social support has a positive effect on the school adjustment, that is, the study notice that juveniles with high social support gain high social adjustment. Third, it appeared that the school stress has a negative effect on the school adjustment. that is, the study notice that juveniles with high stress gain low social support. Fourth, the result to verify the mediate effect of social support, in the long run, that depending on the social support, juveniles' stress has the full mediate effect on their adjustment to school life. That is, the study confirms that juveniles with high stress gain low social support and juveniles with stress it appeared that the school stress has a indirectly effect on the school adjustment.