• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.6
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• pp.1234-1240
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• 2009

Culture is not only a factor of a life worthy of man, but also that of beauty and fluency of life,so it works as a key to show differences in the quality of life. Paying attention to culture, which plays a role to create new things, is a source of high-added value. The term of cultural contents was derived in21C, combining digital skills with art. We are going to reconstruct and develope cultural properties such as remains, pottery, pictures, as a way of restoration for cultural contents with the view of reinterpretation. In this paper, we reinterpreted the pictures which were based on three particular elements in Chosun Dinasty- poetry, handwriting, and picture, and we produced 3D objects after analyzing texts and images in multimedia works applied with source pictures. As a highlighted method of restoration for cultural contents, we produced the work which can be interacted and has three dimensional objects getting out of appreciating of plane images. We presented a method of informing our culture with 3D Mong-yu-do-won-do, which used traditional paintings by being improved user friendliness and accessibility.

• Elastomers and Composites
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• v.35 no.2
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• pp.115-121
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• 2000

In comparison with thermosetting rubber, thermoplastic elastomer (TPE) has various advantages such as simple processing, short cycle time and recycling of scrap. These advantages can lead to development of the high value-added rubber products due to reduction of the waste material, manufacturing cost and the defected product. This article involves a dynamic vulcanization method for EPDM/polypropylene blend, and the manufacturing of a fixed glass weather-strip by glass insert molding method using the blend. In order to investigate mechanical properties of the product, tensile strength, elongation, hardness and specific gravity were measured. Also morphological study was carried out using SEM. Developments of an efficient system of production and automatic process by molding of TPE and glass simultaneously are expected.

• Resources Recycling
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• v.23 no.3
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• pp.71-77
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• 2014

It is believed to have the international competitiveness of the domestic petrochemical in conjunction with the production of high value-added new product and variety of application by supercritical fluid process and the reaction of infusible/insoluble plastic wastes recycling. In this article, the patents and papers for the recycling of organic residues from the plastic wastes using supercritical fluids were collected and analyzed. The open patents of USA (US), European Union (EP), Japan (JP), and Korea (KR) and SCI journals from 1993 to 2012 were investigated. The patents and journals were collected using key-words and filtered by the definition of the technology. The patents and journals were analyzed by the years, countries, companies, and technologies and the technical trends were discussed in this paper.

• Journal of the Korea Institute of Building Construction
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• v.15 no.4
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• pp.383-389
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• 2015

The objective of this study is to develop mixture proportioning approach of crack controlled lightweight foamed concrete without using high-pressure steam curing processes, as an alternative to autoclaved lightweight concrete blocks (class 0.6 specified in KS). To control thermal cracks owing to hydration heat of cementitious materials, 30% ground granulated blast-furnace slag (GGBS) was used as a partial replacement of ordinary portland cement (OPC). Furthermore, polyvinyl alcohol (PVA) and polyamid (PA) fibers were added to improve the crack resistance of foamed concrete. The use of 30% GGBS reduced the peak value of hydration production rate measured from isothermal tests by 28% and the peak temperature of foamed concrete measured from semi-adiabatic hydration tests by 9%. Considering the compressive strength development, internal void structure, and flexural strength of the lightweight foamed concrete, the optimum addition amount of PVA or PA fibers could be recommended to be $0.6kg/m^3$, although PA fiber slightly preferred to PVA fiber in enhancing the flexural strength of foamed concrete.

• Korean Chemical Engineering Research
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• v.56 no.2
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• pp.176-185
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• 2018

As global warming accelerates, greenhouse gas reduction becomes more important. Carbon dioxide dry reforming is a promising green-house gas reduction technology that can obtain CO and $H_2$ which are high value-added materials by utilizing $CO_2$ and $CH_4$ which are greenhouse gases. However, there is a significant coking problem during operation of the dry reforming reactor. Because the carbon dioxide dry reforming is a strong endothermic reaction, the temperature of the reactor drops near the reactor inlet and causes coke formation. To solve this problem, it is important to ensure that the reaction takes place in a temperature range where coke production is minimized. In this study, we proposed a design method that can maintain reaction temperature in the region where the coke is rarely generated by using the new catalyst configuration method. The design method also optimizes the reactor by solving the optimization problem which minimizes the reactor length for a given reaction conversion by using the fuel flow rate, catalyst density, and output temperature by section as optimization variables.

• Archives of design research
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• v.17 no.1
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• pp.289-298
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• 2004

With the advance of digital technology, development of exclusive CAD system for fashion textile that may suggest the future of fashion textile industry is increasingly accelerated. To build up the foundation of digital culture, it is required for fashion textile industry to develop goods with high value added and make rapid change of production system, and actually, exclusive programs are being developed to meet with the desire. Present study considers the vicissitude of fashion textile and the composition and characteristics of design system, and compares and analyses a variety of design developments of digital fashion textile. And it systemizes the expansion and change of creative digital pattern designs that are developed differing from existing graphic program, the expression of suitable textile texture, and the simulation effect by three-dimension modeling. By separating the usage of CAD system for fashion textile into designing and producing aspects, it also focuses on increasing the usage of exclusive CAD system for fashion textile.

• Journal of Korea Multimedia Society
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• v.10 no.2
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• pp.246-259
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• 2007

The animation industry, which accelerates the overall development of the Digital contents industry, is a high value-added industry that produces synergy effects in cooperation with key industries such as IT. Effectively serving as a vital energy source for the Korean economy through its positive effects, such as employment creation. In particular, there is the real prospect that the Korean animation industry will gain ground in overseas markets and thus occupy them ahead of others, by advancing overseas in uni son with the hypersonic network industry. In this regard, this study aims to suggest some concrete ways in which to Korean animation companies can enhance their competitiveness. This is accomplished by positively verifying that some major representative methods of competitiveness enhancement, whose effectiveness has been proved in existing manufacturing and production systems. a re also excellently effective for the animation enterprise. In effect, the study has positively applied and carried out such research on Korean animation enterprises.

• Journal of Applied Biological Chemistry
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• v.64 no.3
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• pp.309-316
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• 2021

Kaempferol 3-O-galactoside (Trifolin), a member of the flavonol group, has been reported to have anticancer effects against promyelocytic leukemia, histocytic lymphoma, skin melanoma and lung cancer. Trifolin has been extracted and used from several plants, but the extraction process is complicated and the final yield is low. Biotransformation is an alternative tool to produce high value-added chemicals from inexpensive compounds. To synthesis trifolin from naringenin, three genes (PeFLS and OsUGE-PhUGT) were introduced into Escherichia coli, respectively. In order to synthesis trifolin from naringenin, a co-culture fermentation system was established by optimizing the cell concentration, biotransformation temperature and medium, isopropyl-β-D-thiogalactoside (IPTG) concentration, substrate supply concentration, and recombinant protein induction time. The established optimal conditions for trifolin production were a 3:1 ratio of BL-UGTE to BL-FLS, induction of recombinant protein at 25 ℃ for 4 h after addition of 2.0 mM IPTG, biotransformation at 30 ℃, and supply of 300 μM naringenin. Through the optimized co-culture fermentation system, trifolin was biosynthesized up to 67.3 mg/L.

• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.409-416
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• 2018

The purpose of this study is to estimate the macro-economic ripple effect of tax exemption for both high end technology firms and research enterprises in R&D special cluster. We apply the user cost of capital model and the Input-output model to the estimation. Estimation results for 2007-2016 are as follows: the increase in both the production and the value-added is 2,807 and 1,392 hundred million Korean won, respectively. Also, employers are increased by 2,355 people. These imply that keeping the tax exemption item for certain enterprises in R&D special cluster may be beneficial to our economy.

• Journal of the Korea Fashion and Costume Design Association
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• v.21 no.1
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• pp.149-162
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• 2019

The purpose of this study is to suggest various directions of living hanbok and proposed the living hanbok design that integrated the tradition and the contemporary, as well as the past and present with denim material that represents the youth cultureby while using the motif of Korean Jogakbo. For the research method, the data on living hanbok, denim, and Jogakbo were surveyed to develop and produce a living hanbok design. The development of a living hanbok design emphasized the meaning of longing for an accumulation of good fortune, by using the concept of 'wishing for fortune' including the symbolic images of denim and Jogakbo. The production results of this study are as follows. First, the Jogakbo motif consisted of patterns yearning for harmony, great fortune, longevity, and many children, and the living hanbok design integrated with the denim material symbolized the convergence of the past and present and the harmony of eastern and western cultures. The study could verify that the living hanbok design was recreated in a contemporary sense to be used everyday by expressing contemporary senses in a traditional image. Second, leftover fabric pieces and recycled materials that can be abandoned by the material market were used for denim. This study could also develop the living hanbok design as a sustainable design through upcycling, an important social trend, puting an emphasis on carrying out socio-ethical responsibilities. Third, denim Jogakbo work, which is connected by small pieces of denim material, used to be a difficult and labor intensive handicraft, but it could be proposed as a new high value-added fashion and generate contemporary living hanbok with a new image.