• Journal of Korea Multimedia Society
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• v.15 no.2
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• pp.179-194
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• 2012

Digital image forgery is becoming a topic of great interest with regard to honesty in imaging. We can often see forged digital images in a variety of places, such as the internet, and magazines, and in images used in political ads, etc. These can reduce the reliability and factual basis of the information contained in image. Therefore, objectivity is needed to determine if the image is forged so as to prevent confusion in the viewing public. Most digital forgeries consist of image resizing, rotating including the following interpolations. To find evidence of interpolation in forged images, this paper proposes a new method for detecting digital image forgery using general interpolation factors analyzed through re-interpolation algorithm of the forged images in order to determine the differences in the patterns. Through the re-interpolation algorithm we could detect the forged region and filtering region used image retouching included to interpolation.

• Journal of the Korean Professional Engineers Association
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• v.34 no.1
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• pp.53-58
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• 2001

Value Engineering (VE) is an organized process with an impressive history of improving value and quality. VE can be applied to the construction projects with having good study results. The VE study in construction projects gives identification of opportunities to remove unnecessary costs while assuring quality, performance, reliability, and other factors will meet or exceed the clients needs. VE techniques can save money, reduce time, and improve quality, reliability, maintainability, and performance. VE can also make improving of human factors (altitudes, creativity), and team work. According to the results of VE study in recent USA, 5∼35% reduction in initial costs have been made for the construction projects (ROI ranges : 100∼1000). To have successful work results, if possible, VE study shall be considered at project planning stage or basic design stage later than field work stage with application of VE JOB PLAN, multi-disciplinary approach, and proper techniques in respective study phases (pre-workshop / information gathering / function analysis / creativity / judgement and evaluation / development / presentation and implementation) among the detail techniques in many.

• Journal of the Korean Institute of Gas
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• v.16 no.5
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• pp.35-40
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• 2012

To analyze the macroscopic fracture behavior as functions of the gas pipeline grade and the working environment, following analyses have been accomplished. Computer analysis of changes in fracture behaviors according to the working conditions of pipelines and Analysis of dynamic ductile fracture behaviors using the Battelle Two Curve Method. Recently, an economic and reliable pipe materials with improved performance has been needed for the severe pipeline working condition and new transporting materials. As the grade of pipe materials became higher, the possibility of dynamic ductile fracture could be increased. Therefore, the understanding of the technology to control and arrest the dynamic ductile fracture is important.

• Journal of Broadcast Engineering
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• v.10 no.4 s.29
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• pp.599-609
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• 2005

There are many test parameters in the DTV measurement, which uses several test measuring instruments and miscellaneous devices. To operate all of those devices and analyse test results is a tedious and time-consuming process with a high error rate committed by inexperienced test crews. In this paper, we propose an integrated DTV measurement and analysis system(IMAS) that remotely controls and manages any instruments with standard network interface. This system can take, organize, store the field data into an integrated database and easily produce systematic output according to user-defined form. It can also measure several types of digital broadcasting signals such as DTV, DMB, DAB with generalized measurement procedures. Proposed measurement system was applied in the DTV field test by KBS and proved that it could enhance the accuracy and efficiency of entire test sequences and also dramatically reduce measurement time compared to conventional measurement systems.

• Journal of Korean Ophthalmic Optics Society
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• v.18 no.2
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• pp.93-99
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• 2013

Purpose: The aim of this study was to develop a dry eye test method using a paper based microfluidic device that improves inaccuracy caused by using one of current point-of-care dry eye tests such as Shirmer's. Methods: Wax printed hydrophilic chromatography papers were dyed with anthocyanin extracts to detect colorimetric display of liquid samples with varying pH. Fluid distribution rates were measured using artificial tears and human tears directly from 32 subjects. Results: With Shirmer's, fluid distribution rates with small amount of samples (less than $0.5{\mu}l$) were not displayed. However, with paper based microfluidic device, fluid imbibition distances over time were clearly showed. Also clinical results of dry eye from newly developed paper based microfluidic device showed correlation with the results from tear break up time tests. Conclusions: The newly developed paper based microfluidic devices were easy to use and exhibited more accurate clinical results than current dry eye point of care tests such as Shirmer's.

• The Journal of the Korea Contents Association
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• v.17 no.8
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• pp.27-38
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• 2017

While the practice of investigative journalism among public service broadcasters has declined in the 2010s, Newstapa, a nonprofit online news organization, emerged as a trustworthy provider of investigative reportage. This study explores the reasons why the realistic conditions for investigative journalism -- such as competent journalists, adequate support systems, and productive cultures -- were first realized and later changed among public broadcasters and in Newstapa. Governmental pressure and the public broadcasting managements' anti-journalism policy had a chilling effect on the production staff of public broadcasters. Their enthusiasm was affected and led to a decline in the production culture of discussion and teamwork. The staff's strong will to practice journalism and the persistence of a production culture that respected autonomy and guaranteed independence enabled Newstapa to become an influential investigative journalism institution in a relatively short period of time. This proves that meaningful investigative journalism is possible when the combined elements of competent and determined journalism practitioners, as well as a system supportive of extensive news gathering and independence of production, are in place. An investigative program is the outcome of ideal broadcasters' journalistic conditions and a vibrant and thriving production culture.

• Knowledge Management Research
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• v.19 no.3
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• pp.89-112
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• 2018

Under exhibition circumstances, exhibition advertising by organizer is a mean to promote exhibition service to exhibitors and visitors while general advertising is to promote products and services to consumers. The objective of this research is to suggest advertising strategies by seeing differences in the impact of information quality and media credibility on visitor intention depending on the types of exhibition. This study adopted Elaboration Likelihood Model to measure the impact of central and peripheral cues on advertising attitude and its consequence on visitor intention. We further examined how these influence processes were moderated by exhibition types of B2B and B2C. We conducted survey from B2B and B2C exhibitions respectively, and analyzed structural equation model and moderator regression. We found that first, among factors of information quality as a central cue, argument strength has a positive impact on attitude towards advertising. Second, we also found among factors of media credibility as a peripheral cue, media trustworthiness has a positive impact on attitude towards advertising. Lastly, this study revealed that a type of exhibition moderates the central and peripheral routes towards advertising attitude, showing that B2C visitors are influenced by factors of information quality, and B2B visitors rather by media credibility. This study yields implications in that it gives marketers of organizer a background to set different marketing strategies depending on the types of exhibition.

• Proceedings of the Korea Contents Association Conference
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• 2006.05a
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• pp.298-301
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• 2006

This study was conducted to observe the changes in trend of a beautiful face defined in different time frames. Affective space model was used in this study, for physical components of a face are far too complicated and undistinguishable from simple categorization of a face by facial characteristics. It is because using a facial model defined only by its physical characteristics renders a complicated and multi-dimensional space, whereas an emotional facial model enables a 2-dimensional space for easier observation and explanation. Scope of the study is focused on faces of the Korean female celebrities, looking at the media frequency, popularity rankings in well-known portal sites, and popularity ratings by reliable search organizations as of 2006. Celebrities in their 20s and early 30s were selected. In addition, to observe any trend in a beautiful face with the passage of time, the study looked at changes or trends in the last 5 years by comparing the faces of celebrities in year 2006 with their faces stored in the database since five years ago.

• The Journal of Society for e-Business Studies
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• v.19 no.2
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• pp.1-29
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• 2014

Advancement of mobile technology opened new business field in existing marketing area and in spirit of depression of advertisement market due to worldwide shrunken business, investment mobile advertisement market only jas a tendency to increase. In this paper I tried to know some factors to influence on the acceptance of customer to receive the referring advertisement continually through the study of 'KaKaotalk Plus Friends', a kind of marketing platform of KaKaotalk, the model killer application of Smart Phone. For this purpose I developed the research model based on Customer Value Theory and Social Exchange Theory etc. Futhermore based on these theories I studied the facts to influence on the acceptance of customer using KaKaotalk Plus Friends Service.

• Journal of Digital Convergence
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• v.16 no.3
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• pp.169-179
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• 2018

This study aimed to investigate the effects of user experience on Facebook acceptance behavior and advertising acceptance behavior. For the study, a survey was conducted among 367 male and female college students who use Facebook. In the results, first, functionality, usability, and pleasurable had positive effects on Facebook attitude, usability and pleasurable on flow, and reliability, usability, and pleasurable on the intent for continuous use. Second, functionality had a negative effect on advertising invasiveness while pleasurable had a positive effect on advertising attitude and no significant effect on advertising avoidance. The findings in this study provide basic data that can be used by various companies that use Facebook and advertising on Facebook for developing marketing strategy. In addition, future studies are expected on considering various variables related to user experience.