• Journal of Korea Multimedia Society
• /
• v.5 no.5
• /
• pp.571-581
• /
• 2002

Many periodic broadcasting schemes for near VoD systems are proposed. Recently non-uniform segmentation schemes have been used to develop periodic broadcasting techniques for near VoD. These techniques give significant reductions in start-up latency as compared with more conventional uniform segmentation. However, all of these schemes assume that the videos are CBR-encoded. Since a CBR-encoded video has a target average tate than an VBR encoding, there is potential to obtain further Performance Improvements by using VBR videos. Unfortunately, however, the studies concerning broadcasting with VBR video ate rare and the existing techniques have the problem of virtual loss. In this paper, we modify Skyscraper Broadcasting Scheme for broadcasting with VBR videos which is a representative non-uniform segmentation scheme lot CBR videos. A VBR video can be transmitted at constant bit rate (CBR) by using prefetching. With this idea we propose Modified Skyscraper Broadcasting Schemes for VBR videos and make performance evaluation by simulation. We show that our schemes have a better performance than Skyscraper Broadcasting Scheme for CBR videos.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
• /
• 2004.03a
• /
• pp.493-498
• /
• 2004

The objective of the present study is to compare various conventional and recently evolved satellite image-processing techniques and to ascertain the best possible technique that can identify and position of aquaculture farms accurately in and around the Younggwang coastal area. Several conventional techniques performed to extract such information fiom the Landsat-TM imagery do not seem to yield better information about the aquaculture farms, and lead to misclassification. The large errors between the actual and extracted aquaculture farm information are due to existence of spectral confusion and inadequate spatial resolution of the sensor. This leads to possible occurrence of mixture pixels or 'mixels' of the source of errors in the classification techniques. Understanding the confusing and mixture pixel problems requires the development of efficient methods that can enable more reliable extraction of aquaculture farm information. Thus, the more recently evolved methods such as the step-by-step partial spectral end-member extraction and linear spectral unmixing methods are introduced. The farmer one assumes that an end-member, which is often referred to as 'spectrally pure signature' of a target feature, does not appear to be a spectrally pure form, but always mix with the other features at certain proportions. The assumption of the linear spectral unmxing is that the measured reflectance of a pixel is the linear sum of the reflectance of the mixture components that make up that pixel. The classification accuracy of the step-by-step partial end-member extraction improved significantly compared to that obtained from the traditional supervised classifiers. However, this method did not distinguish the aquaculture ponds and non-aquaculture ponds within the region of the aquaculture farming areas. In contrast, the linear spectral unmixing model produced a set of fraction images for the aquaculture, water and soil. Of these, the aquaculture fraction yields good estimates about the proportion of the aquaculture farm in each pixel. The acquired proportion was compared with the values of NDVI and both are positively correlated (R$^2$ =0.91), indicating the reliability of the sub-pixel classification.ixel classification.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.26 no.3
• /
• pp.179-192
• /
• 2024

YouTube, the most representative video sharing platform, is used by millions every day. New videos across various fields, such as daily life, beauty, games, eating, fashion, and music are constantly being uploaded. Among the content available on YouTube, beauty-related videos are particularly popular. Creators who produce and share beauty-related content on online media platforms are known as beauty creators. There is a significant amount of beauty-related content produced in response to high public interest. Most of this content focuses on sponsored advertisements related to product relevance and attitudes, such as makeup tutorials, hairstyle creation, and new product reviews. However, there is a lack of research on the diverse environments of self-media beauty creators and basic makeup production techniques. This study investigated the content composition of individual media YouTube beauty creators and examined the current status of YouTube beauty creators in Korea. This research is necessary for the development of diverse content and videos by beauty creators. Based on these findings, a makeup technique was developed for YouTube beauty creators, considering the production environment of marketing content and video production steps. This study aims to expand and specialize the broad range of content environments of beauty creators and develop makeup techniques that can be effectively used in YouTube content production.

• Journal of the Korean Society of Fashion and Beauty
• /
• v.6 no.1
• /
• pp.39-47
• /
• 2008

Korean embroidery is the long historical industrial arts of real life and has handed down Korean sentiment up to now. Korean traditional embroidered pattern is designed to wish someone's health and luck, who uses the embroidery on the clothes and the goods in real life. Especially, the ten longevity symbols' design is represented as 10 which means perfection in oriental philosophy, the sun, mountain, cloud, water, crane, rock, turtle, pine tree, the elixir of life and deer; these 10 symbols show how ancient Korean believe and wish perpetual youth. However, fiber material used embroidery relic has difficulty in preserving for long period compared to other relic descended from historical events for long time and their preserved state isn't so good owing to have been used directly in the real life. Therefore, it is essentially embossed to preserve the embroidery relic and pattern, and make DB for the data. With preservation of the pictures about the handicraft, it's necessary to preserve embroidery technique and make DB through digital imagination. Through the process, we can apply Korean embroidery image to cul-duct package and digital image related field, and it will be helpful to make the tradition popular. In this study, through the research for the embroidery technique applied pattern on the embroidery relic of ten longevity symbols, we'll establish the cultural identification of Korean embroidery image and then develop a worldwide Korean image.

• 한국신재생에너지학회:학술대회논문집
• /
• 2007.06a
• /
• pp.250-253
• /
• 2007

An evaporated Ti/Pd/Ag contact system is most widely used to make high-efficiency silicon solar cells, however, the system is not cost effective due to expensive materials and vacuum techniques. Commercial solar cells with screen-printed contacts formed by using Ag paste suffer from a low fill factor and a high shading loss because of high contact resistance and low aspect ratio. Low-cost Ni and Cu metal contacts have been formed by using electroless plating and electroplating techniques to replace the Ti/Pd/Ag and screen-printed Ag contacts. Ni/Cu alloy is plated on a silicon substrate by electro-deposition of the alloy from an acetate electrolyte solution, and nickel-silicide formation at the interface between the silicon and the nickel enhances stability and reduces the contact resistance. It was, therefore, found that nickel-silicide was suitable for high-efficiency solar cell applications. The Ni contact was formed on the front grid pattern by electroless plating followed by anneal ing at $380{\sim}400^{\circ}C$ for $15{\sim}30$ min at $N_{2}$ gas to allow formation of a nickel-silicide in a tube furnace or a rapid thermal processing(RTP) chamber because nickel is transformed to NiSi at $380{\sim}400^{\circ}C$. The Ni plating solution is composed of a mixture of $NiCl_{2}$ as a main nickel source. Cu was electroplated on the Ni layer by using a light induced plating method. The Cu electroplating solution was made up of a commercially available acid sulfate bath and additives to reduce the stress of the copper layer. The Ni/Cu contact was found to be well suited for high-efficiency solar cells and was successfully formed by using electroless plating and electroplating, which are more cost effective than vacuum evaporation. In this paper, we investigated low-cost Ni/Cu contact formation by electroless and electroplating for crystalline silicon solar cells.

• Journal of the Korea Computer Industry Society
• /
• v.3 no.9
• /
• pp.1279-1286
• /
• 2002

Generally, radiologists can fail to detect pulmonary nodules in up to 30%. If an automatic system can inform the radiologists of thelocations of the doubtful nodules in the X-ray chest images, the frequency of mistakenly observed numbers of the nodules can be potentially reduced. This software is using morphological filtering and two feature-extraction techniques. The morphological filtering is the first process, which subsequently adds the operations of erosion and dilation to the original images so that this process can transform the original X-ray chest images into manageable ones. The false-positives are frequently being mistaken as nodules but actually these are not real nodules. The second process is the two feature-extraction techniques which are used to reduce the false-positives. Therefore, this system will make more effective detection of pulmonary nodules by reducing the false-positives when applied to the X-ray chest images which is difficult to get accurate detection.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.3
• /
• pp.514-522
• /
• 2015

In Microwave Radio Link, it is necessary to consider the radio fading to consistently assure the radio link of the high quality as the distance. If the fixed modulation is used for the microwave radio link, it is difficult to keep the high availability of link for the case of the long distance. Adaptive Modulation(AM) provide good quality on microwave link, but the application of the only-AM is not enough to provide the availability assurance due to the fluctuating characteristics of link capacity. Our previous study has proposed the improvement method of transmission in association with the distance, however the previous method needed to make up for the common application. There was no suggestion of a mathematical formula with a variable. In this paper, we propose an optimized Adaptive Transmission Techniques with calculating formula of the priority traffic transmission capacity based on AM in consideration of the fade margin for the availability assurance as the distance and the comparison of the channel bandwidth for Long-distance Radio Link.

• The Journal of the Korea Contents Association
• /
• v.12 no.12
• /
• pp.93-102
• /
• 2012

This study started from the project that make the record of legendary actor's heritage in Korea. This research was focused on Sung Hee Beck's artistic footprint which was almost same steps as the Korean modern play of the centennial theater history by reviewing her; domestic royal actor; acting techniques which learn from real acting field by herself and her career. Her life shows constant resistance for the social negative reputation of the acting field, and her frantic effort to Korean play and actor's phase. Above all, this passionate actor's life contributes to society, and improve the Korean theater through 70 year's her experiences with countless roles in around 400 performances and her own valuable acting techniques. To look up legendary actress of our time, Sung Hee Beak's life gives us a chance to reflect art of acting which emphasizes its fundamental.

• International Journal of Advanced Culture Technology
• /
• v.4 no.2
• /
• pp.38-42
• /
• 2016

In the growing data saturated world, the question of "whether data can be used" has shifted to "can it be utilized effectively?" More data is being generated and utilized than ever before. As the collection of data increases, data mining techniques also must become more and more accurate. Thus, to ensure this data is effectively utilized, the analysis of the data must be efficient. Interpretation of results from the analysis of the data set presented, have their own on the basis it is possible to obtain the desired data. In the data mining method a decision tree, clustering, there is such a relationship has not yet been fully developed algorithm actually still impact of various factors. In this experiment, the classification method of data mining techniques is used with easy decision tree. Also, it is used special technology of one R and J48 classification technique in the decision tree. After selecting a rule that a small error in the "one rule" in one R classification, to create one of the rules of the prediction data, it is simple and accurate classification algorithm. To create a rule for the prediction, we make up a frequency table of each prediction of the goal. This is then displayed by creating rules with one R, state-of-the-art, classification algorithm while creating a simple rule to be interpreted by the researcher. While the following can be correctly classified the pattern specified in the classification J48, using the concept of a simple decision tree information theory for configuring information theory. To compare the one R algorithm, it can be analyzed error rate and accuracy. One R and J48 are generally frequently used two classifications${\ldots}$

• Journal of the Korean Society for Precision Engineering
• /
• v.17 no.9
• /
• pp.189-195
• /
• 2000

RP techniques have their unique characteristics according to the working principles : star-stepped surface of parts due to layer-by-layer stacking low build speed caused by line-by-line solidification to fish one layer and post processing to improve surface finish etc The objective of this study is to propose a new RP technique Variable Deposition Mnanufacturing (VDM) which can make up for the disadvantages of the existing RP techniques and to develop an apparatus to implement the technique. The proposed process can greatly reduce the build time and improve the surface finish of parts generated. Experiments are carried out to obtain the range of temperature of molten material to maintain its fluidity and to investigate the effect of gas cooling on the preservation of the slopes. Some simple shapes such as a line-shape an S-shape and a circle-shape are fabricated from Ethylene Vinyl Acetatecopolymer(EVA) In order to examine the applicability of VDM to more general shapes a tensile specimen and a yo-yo shape were manufactured by the proposed RP method using EVA material as a trial approach. The current basic study shows a high potential of practical use of the proposed VDM process to prototyping of a general three-dimensional shape.