• Journal of Life Science
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• v.8 no.4
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• pp.457-464
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• 1998

As a first step for developing universal genetic transformation vector of dilkmoths., we identified the presence of mariner-like element(MLE) which is one of transposable element discovered from many insects to human species, from Bombyx mori, Bombyx mandarina, Antherae yammamai and Antherae pernyi. We used a degenerative primer pair designed from a transposase gene of Drosophila mauritiana and Hyalophora ceropia MLE. As results, major PCR product of 500bp expected as a part of transposase of MLE was detected from all the slkmoths used of this study using these primer. And hybridization assay using pBmoMAR as a probe DNA that was previously cloned from Bombyx mori by the same primer pair, confirmed the presence of MLE from all the silkmoths. This assay showed also that the endogenous MLE in genome of the silkworm is present as high copy number unlikely Drosophila mauritiana which has 10-20 copy number. This data will be a fundamental genetic information for developing mariner-derived vector to transform the silkmoths and other useful insects.

• Journal of the HCI Society of Korea
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• v.11 no.1
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• pp.11-19
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• 2016

This study aimed to assess the economic value of the UX design and applied contingent valuation method (CVM) to the three smartphone screen unlock interface types: touch, fingerprint, and iris recognition. The contingent valuation method was chosen from various economic valuation approaches because the interface components such as the screen unlock are important user experience values but non-market goods which are not traded independently. Using the double-bounded dichotomous choice approach of the contingent valuation method, the survey results of the logit model showed that the economic value of touch unlock interface was 529 won, fingerprint was 4,214 won, and iris recognition was 1,316 won. That is, the fingerprint interface had the highest economic value, followed by iris recognition and touch interface. The main contribution of this research is that we examined a method for economic valuation of the UX design and generated systematic and credible results.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.44 no.4
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• pp.1-9
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• 2007

in this paper, we propose the Adaptive Decision Algorithm for RFID Tag Anti-Collision. We study the RFID Tag anti-collision technique of ALOHA and the anti-collision algorithm of binary search. The existing technique is several problems; the transmitted data rate included of data, the recognition time and energy efficiency. For distinction of all tags, the Adaptive Decision algorithm identify smaller one ,each Tag_ID bit's sum of bit '1'. In other words, Adaptive Decision algorithm had standard of selection by actively, the algorithm can reduce unnecessary number of search even than the exisiting algorithm. The Adaptive Decision algorithm had performance test that criterions were reader's number of repetition and number of transmitted bits for understanding tag. We showed the good performance of Adaptive Decision algorithm better than exisiting algorithm.

• The Journal of the Korea Contents Association
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• v.6 no.1
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• pp.72-79
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• 2006

Recently, a MMORPG(Massively Multi-play Online Role Playing Game) has built distribute server by Seamless world. This paper proposes an efficient collision detection method. DLS is used to dynamically adjust spatial subdivisions in each the boundary regions of distribute server We use an index table to effectively utilize the relationships between in the nodes and can perform the collision detection efficiently by reconstructing nodes of the tree. Also, we maintain the information for the boundary region to efficiently detect the collections and adjust the boundary regions between distributed servers by using DLS. As the DLS uses pointers, the information for each server is not needed and the boundary regions between the distributed servers are efficiently searched. Using node index points, the construction table can be made to find between ray and neighborhood node, In addition, processes for Network traffic reduce because a copy of the boundary regions is not needed when a object moves with realtime.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.71-79
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• 2016

As various social problems have arisen due to the increase of the aging population, one of these problems is the increase of the elderly with dementia. The necessity of systematic and effective dementia management policies has been raised, as the increase of social and economic cost along with the growth of the dementia population. This study examined dementia management policy of Japan, where there is arranged and provided dementia management policy in advance. Especially, this study focuses on the contents of comprehensive promotion strategies for dementia policy(New orange plan) of Japan which was pronounced in 2015, and explores the development strategies for Korea by reviewing this plan. The suggestions through this study are provided as follows: inclusion of the support contents reflecting the dementia patients and their families, the necessity of coping for early onset dementia, organizing system for early diagnosis and prevention such as an early stage of intensive support team, a continuous progression for building the elderly-friendly community and conducting campaign for a deep understanding of dementia, are discussed.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.6
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• pp.967-978
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• 2016

This study examines consumers' multi-channel choices in the search phase and purchasing phase stage according to price sensitivity and product characteristics in order to propose a multichannel strategy. For the research, one-way ANOVA, t-test, clustering analysis, and crosstabs are used for the descriptive analysis of 317 surveys on men and women conducted in 2014. The findings are as follows. First, consumers that both experience goods and search goods rely on surrounding advice as well as a search channel regardless of price sensitivity. Second, channel selection differs by price sensitivity when it comes to purchasing phase. Consumers with high price sensitivity tend to purchase from online channels; however, consumers with low price sensitivity tend to purchase from off line channels in cases of search goods. Meanwhile, cases of experience goods have no meaningful result. Third, consumers are divided into 3 groups by the tendency of channel selection. In case of experience goods, search channel choice is aligned with purchasing channel; however, search channel choice is not aligned with purchasing channel in search goods. This study provides clear information on fashion consumers' behavior on multi-channel choices compared to ones for search goods consumers on strategic strategies for fashion companies.

• Journal of Digital Convergence
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• v.17 no.10
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• pp.127-139
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• 2019

This study aims to explore the impressive experiences of university students on YouTube media and to find ways to improve personal media as useful consumer information. 44 university students were selected, and data on the experience of using YouTube were collected and analyzed by applying the critical incident technique. As a result, the positive responses to personal media were derived from 'enhancing C2C information capabilities', 'consumer-centric usability', 'attractive information creators', 'a sense of the sameness', and 'fresh and entertaining information'. Negative responses were derived from 'spreading of harmful information', 'distrust in information creators', 'inducing excessive advertising and impulse buying', 'media addiction' and 'relative deprivation'. In addition, improvement of the personal media has been suggested. This study has differentiation and significance as a qualitative data for understanding consumer's perception and experience of personal media.

• Journal of KIISE:Software and Applications
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• v.36 no.6
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• pp.462-470
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• 2009

We propose a wearable system to help the visually impaired persons for walking safely to destination. If a user selects a destination, the system guides the user to destination with position data from GPS receiver and shortest path algorithm. At the same time, after acquiring complex spatial structures in front of the user with ultrasonic sensors, we categorize them into several predefined patterns, and determine an avoidance direction by estimating the patterns. As a result, visually impaired persons can arrive at destination safely and correctly without others help.

• 한국생물공학회:학술대회논문집
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• 2003.04a
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• pp.686-689
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• 2003

A Gene content phylogenetic tree and a 16S rRNA based phylogenetic tree were compared for 9 Archaea and 15 Proteobacteria, whole-genome sequenced, by neighbor joining and bootstrap methods (n=1000). Ratio of conserved COG (clusters of orthologous groups of proteins) to ortholog revealed that they were within the range of 4.60% (Mezorhizobium loti) or 56.57% (Mycoplasma genitalium), The diversity of ratio meant the Possibility of searching for useful genes, as they possess peculiar genes. The gene content tree and the 16S rDNA tree showed coincidence and discordance in Archaea and Proteobacteria.

• 한국생물공학회:학술대회논문집
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• 2003.04a
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• pp.715-718
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• 2003

A COG (clusters of orthologous groups of proteins) algorithm, protein similarities among genomes, was used to detect conserved genes and to figure out their relationships within 42 procaryote, 33 Bacteria and 16 Proteobacteria All analyzed procaryotes shared 75 COGs. COG0195, COG0358 and COG0528 were only represented by the 42 procaryotes. Sixty-four COGs were added as conserved genes in 33 eubacteria. Each Proteobacteria group has a unique repertoire of COGs. Metabolic COGs were more diverse in the beta-Proteobacteria group than in the other groups. The possibilities of detecting new biological molecules is high in phylogenetically related organisms, hence the identification of useful proteins by using this algorithm is possible.