• The Journal of the Korea Contents Association
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• v.4 no.3
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• pp.61-70
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• 2004

As multimedia data and their applications are rapidly distributed on the Web, the research on watermark insertion and integrity assurance vigorously increases. In this paper, Discrete Wavelet Transformation dissolves an original image into the three level of low, middle, and high bandwidths. Human Visual System with the significant coefficients extracted from the middle obtains enhanced image quality and robustness using watermark insertion. Experimental results show that various attacks cannot destroy pre-inserted watermark and recovered image is of good quality by measuring PSNR.

• International Journal of Contents
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• v.11 no.2
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• pp.20-30
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• 2015

We propose a new method that specifies objective image quality factors by evaluating an image quality measurement model using random images. In other words, No-Reference variables are used to evaluate the quality of an original image without using any reference for comparison. 1000 portrait images were collected from a web gallery with votes constituting over 30 recommendation values. The bottom-up data collecting process was used to calculate the following image quality factors: total range, average, standard deviation, normalized distribution, z-score, preference percentage. A final grade is awarded out of 100 points, and this method ranks and grades the final estimated image quality preference in terms of total image quality factors. The results of the proposed image quality evaluation model consist of the specific dynamic range, skin tone R, G, B, L, A, B, and RSC contrast. We can present the total for the expected preference points as the average of the objective image qualities. Our proposed image quality evaluation model can measure the preferences for an actual image using a statistical analysis. The results indicate that this is a practical image quality measurement model that can extract a subject's preferred image quality.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.353-364
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• 2015

The purpose of this study was to evaluate the relationship between socioeconomic factors, health behaviors and overweight and to provide information in the policy making process for ensuring health equity. Data of 66,249 adolescents aged 12 to 18 years were derived from the Ninth Korean Youth's Risk Web-based Study, which was conducted in 2013. Multiple logistic regression analysis revealed that overweight were related with gender, parental education, frequency of having breakfast, fruit consumption, vegetable consumption, snack consumption, and frequency of physical activity. Therefore public health programmes should target unhealthy behaviour of adolescents from lower socioeconomic groups to help prevent future life-course disadvantages in terms of health and social inequalities.

• Restorative Dentistry and Endodontics
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• v.38 no.4
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• pp.194-203
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• 2013

Objectives: To investigate the effect of enamel matrix derivative (EMD) on periodontal healing of replanted teeth in animal models. Materials and Methods: The authors searched MEDLINE, PubMed, EMBASE, Cochrane Library, Web of Knowledge and Scopus for articles published up to Oct 2012. Animal studies in which EMD was applied in transplanted or replanted teeth with adequate controls and histological data were considered. Normal periodontal healing or root resorption determined by histology after EMD was applied in replanted teeth with adequate controls was used as outcome measures. The following search strategy was used: ('Emdogain' OR 'enamel matrix proteins' OR 'enamel matrix derivative') AND ('avulsion' OR 'transplantion' OR 'autotransplantation' OR 'replantation'). Results: Six animal studies were included in the final review. There was great heterogeneity in study design among included studies. Two studies with similar study designs were identified and analyzed by a meta-analysis. The pooled estimates showed a significantly higher normal healing and surface resorption and significantly less inflammatory and replacement resorption in EMD-treated groups compared with non-EMD-treated groups. Conclusions: With the limitations of this systematic review, the use of EMD led to greater normal periodontal healing and surface root resorption and less inflammatory and replacement root resorption in the presence of periodontal ligaments. However, no definite conclusion could be drawn with regard to the effect of EMD on periodontal healing and root resorption when no periodontal ligaments exist.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.153-156
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• 2008

In recent years, IPTV attracts great attention along with the digital convergence of communication and media technologies. IPTV combines the advantages of TV and Internet and changes our lifestyle dramatically. In addition, the IPTV service is capable of becoming a new business model which has huge growth potentials in technology-converging marketplaces. This study examines critical factors on the consumer's adoption of the IPTV service. Based on the Innovation Diffusion Theory (IDT), IPTV specific attributes and personal characteristics, we derive eight key factors in the research model. compatibility, ease of use, image, diversity of contents, interactivity, monetary value, social influence, and user satisfaction. Using the partial least square (PLS) method on the data collected through a web-based survey, we test our research model with several hypotheses. From this study, we find that diversity of contents, compatibility and interactivity have a significant indirect effect on the use of IPTV service via user satisfaction, and user satisfaction and social influence also have a significant direct impact on the IPTV use. These findings not only provide practical insights on the consumer acceptance of new technology-converging services, but also help managers to plan their marketing strategies better.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.5
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• pp.464-469
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• 2015

This paper presents the smart system platform for remotely controlling the windows and doors system(WDS), which gathers and analyzes the state of WDS and the environmental data for preventing crimes and keeping a pleasant indoor. In particular, standard API between the smart WDS platform and the smart home platform has been presented to be easy to a home services, such as security, safety, and home appliance control. The private gateway of wire and wireless communication interfaces has been developed to remotely control and monitor the WDS for anytime and anyplace solving the crime prevention and ventilation problem. Web-and App-based user interface in order to detect the opening and shutting states and remotely control WDS have also been developed to support the mobile environment, respectively.

• Journal of Arbitration Studies
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• v.13 no.2
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• pp.425-457
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• 2004

This study is to approach e-Trade issues and how to settle the dispute for e-Trade according to on-line Alternative Dispute Resolution (ADR) process. Most on-line systems operate on a limited access basis. The increasing use of the internet to do business brings to light at least important concerns to persons who engage in commerce on-line, or e-Trade. There is some concern about the limits of current internet technology to guarantee the security of e-Trade. The new technology has transformed society and is defining new years of doing business. This revolution in technology has even changed the nature of many of the goods and services that are the subjects of e-Trade. There is also concern about the limits of the legal framework to guarantee the enforcement of e-Trade. A significant issue is how the law should be adapted to reflect business practices regarding such cyberspace agreements as Web site click-on agreements, e-data interchange, and on-line sales. The principal benefits of on-line ADR should typically be faster and less expensive than traditional conciliation arbitration. The on-line ADR system has the several significances, decreasing inappropriate cost as time and burden of ADR, providing an approachable measure of relief and more efficient tool for the settle of dispute. Therefore, on-line ADR could be used as an adjunct resolution process in large class actions where each single claim is small, but varies somewhat, thus requiring some individual fact determination.

• International Commerce and Information Review
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• v.6 no.2
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• pp.219-242
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• 2004

This study is conducted to find out whether companies which use electronic commerce for their business are collecting the least personal information. of consumers that are necessary for providing electronic commerce services to consumers. Investigators visited website of 799 electronic commerce companies, and checked out the personal informations of consumers that were asked when they join the site as a member. The collected data were analyzed with frequency, percentage, and cross-tab analysis using SPSS program. Generally most electronic commerces required more personal information of consumers than necessary for providing their services to consumers. These phenomena are partly due to the fact that regulations regarding consumer privacy in electronic commerce are advisory rather than mandatory at present. Therefore, it is suggested that mandatory regulation which makes companies poot their identification within a certain area of their web page has to enforced for the protection of consumer privacy in electronic commerce. And it would be more efficient if consumers are consistently educated about self protection guideline regarding personal information in using electronic commerce in addition to a mandatory regulation.

• The Research Journal of the Costume Culture
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• v.23 no.1
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• pp.74-84
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• 2015

The purpose of this study is to examine symbolic meanings of costumes shown by portraits of King Henry VIII and use them as basic data for research on costume design of historical dramas in the Renaissance or on King Henry VIII's costume. This study attempted analysis of symbolic meanings from the paintings-related various domestic and overseas literatures, preliminary study paper, and web sites etc. The symbolic meanings expressed by the portraits of King Henry VIII are characterized by authority, innovation performance, authority, masculinity, innovation performance, artistic taste, intellectual charm, intrepidity and benevolence. Especially, the portraits of King Henry VIII symbolized his masculine beauty by emphasizing sexual attractiveness that cannot be seen in portraits of other kings through broad shoulders and exaggerated codpiece which are the zenith of masculine beauty during the Renaissance age. Through the image of King Henry VIII which was painted with jester or barber surgeons, his characteristic and open mind thinking highly of the technique and human life was also expressed. In the portrait of King Henry VIII, various images set in knights' tournament, playing a musical instrument and reading a book as well as the image of wearing a parliament costume were shown, highlighting King Henry VIII as a person good at both literary and martial arts with open and innovative personality than any other kings in history.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.26 no.2
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• pp.199-215
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• 2015

The objective of this study is to investigate and compare the situation of the informationization of public libraries between 2012 and 2014. Data were collected two times in both 2012 and 2014 using Internet survey. Survey contents were general information situation, softwares, digital service room, RFID, digital contents, mobile service, integrated digital services. Results show that library informationization went for demonstration effect for local residents, staff for library informationization was insufficient, KOLAS was still needed to be upgraded, and most of public libraries were insufficient for future digital services. As improvement plans, there are the development of next generation integrated system, expansion of mobile web and app service, and increasing digital contents. For further study, it provides a study of the use of digital contents and equipment on public libraries.