• Korean Journal of Remote Sensing
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• v.38 no.5_2
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• pp.725-735
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• 2022

Currently, disasters occurring in Korea are characterized by unpredictability and complexity. Due to these features, property damage and human casualties are increasing. Since the initial response process of these disasters is directly related to the scale and the spread of damage, optimal decision-making is essential, and information of the site must be obtained through timely applicable sensors. However, it is difficult to make appropriate decisions because indiscriminate information is collected rather than necessary information in the currently operated Disaster and Safety Situation Office. In order to improve the current situation, this study proposed a framework that quickly collects various disaster image information, extracts information required to support decision-making, and utilizes it. To this end, a web-based display system and a smartphone application were proposed. Data were collected close to real time, and various analysis results were shared. Moreover, the capability of supporting decision-making was reviewed based on images of actual disaster sites acquired through CCTV, smartphones, and UAVs. In addition to the reviewed capability, it is expected that effective disaster management can be contributed if institutional mitigation of the acquisition and sharing of disaster-related data can be achieved together.

• Journal of the Korean Applied Science and Technology
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• v.35 no.3
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• pp.816-825
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• 2018

Recently, it was emerged to need the necessity of LPG residues management due to the finding some substances such as rust. This study is performed to investigate the characteristics of LPG residues in the production and distribution stage of LPG. For the qualitative analysis of LPG residues, it was operated to be set up the analysis conditions(the flow rate, etc) of GC-MS and was performed to analyze the component of LPG residues. From the analysis result using GC-MS, it was shown that the component of LPG residues was turned out the plasticizer to be used in the rubber manufacturing process. The inorganic components of LPG residues were analyzed using ICP-OES. At the results of inorganic analysis, it was shown that the Si element was detected, which was presumably derived from defoamers used mainly in the LPG production. Also, the P and Zn element, which are estimated to be components of grease additives used for filling facilities, were also partially detected. No trace of rusting was detected in the LPG residues in the production and distribution stages analyzed in this study. But, as plasticizers and grease additives can affect to the LPG fuel system in vehicles, it will be necessary to use the proper quality of rubber and to expand the use of low boiling grease additives.

• Korean Journal of Food Science and Technology
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• v.37 no.6
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• pp.957-961
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• 2005

Spoilage yeast was isolated from spoiled rice-syrup and identified by Microbial Identification system (MIDI) as Zygosaccharomyces bailii based on composition of fatty acids exhibiting carbon skeleton of 16:0, 16.1 $({\Delta}cis\;7)$, 18:2 $({\Delta}cis\;9)$, 18:1 $({\Delta}cis\;9)$, and 18:1. Increase in sugar content $(1^{\circ}brix)$ resulted in decreased moisture concentration (1%), and water activity decreased from 0.72 to 0,63 when sugar concentration increased from 77 to $83^{\circ}brix$. Yeast showed very slow growth during three weeks post-inoculation in rice-syrup at 17 and $79^{\circ}brix$, and maximal level of Z. bailii was found at 6 and 10 weeks storage at 15 and $25^{\circ}C$, respectively. At over $81^{\circ}brix$ its growth slowly decreased at beginning of storage, indicating rice-syrup could be preserved safely at above $81^{\circ}brix$ sugar content without Z. bailii contamination.

• Food Science and Preservation
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• v.22 no.1
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• pp.129-133
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• 2015

The antioxidant potentials of ten kinds of medicinal plants used as natural dyeing agents were tested. Among the plant extracts and floral waters that were examined in this study, the antioxidant activities of the DPPH and ABTS radical scavengers increased with increasing amounts of the extracts. The hot-water extracts from Aphis chinensis, Caesalpinia sappan L., Rumex crispus L., and Areca catechu effectively inhibited the DPPH and ABTS radicals at concentration below 0.1 mg/mL. The floral water obtained through steam distillation from Areca catechu, Rubia akane Nakai, Coptis chinensis, and Phellodendron amurense showed relatively valid antioxidant activities. In particular, the natural colorants extracted from Rumex crispus L., Areca catechu, and Aphis chinensis effectively suppressed the photogenerated singlet oxygen induced by a photosensitizer in in-vitro assay systems. The concentrations ($IC_{50}$) of the hot-water Aphis chinensis extract required to exert a 50% reduction effect on DPPH, ABTS, and singlet oxygen were found to be 8.5, 8.0, and $210{\mu}g/mL$, respectively. The study results suggest that extracts derived from naturally occurring colorants as well as floral waters could be used as natural antioxidants in the food and health-care industries.

• International Commerce and Information Review
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• v.15 no.3
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• pp.333-352
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• 2013

Various trade competitiveness-related indices such as TSI, CACI, MCAI, and IITI are applied to examine the trade structure of comparative advantage and complementarity between Jonnama and Chinese on agricultural and Fisheries industry using the data of years 2000-2012 of KITA. The result show that Joennam has specialized in the product of other products of animal origin and preparations of vegetables, fruit, nuts, other par. The Intra-Industry trade level of Korean agricultural and Fisheries industry were in the trend of uprising with vertical intra-industry pattern dominant among them in the product live trees other live plants, edible vegetables roots, oil seeds oleaginous fruit, other vegetable saps extracts, preparations of cereals flour starch. As expected, Jeonnam region show that the high quality vertical IIT, indicating that Jeonnam export high-priced high quality products to China and import cheap low quality items from China. Finally, the innovation of production system, distribution modernization, value-maximizing strategies were suggested as a strengthening method of competitiveness.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.50
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• pp.251-275
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• 2011

This study represents the current situation on the Korean Government's investigation into the imports with the infraction of the country of origin indication law, showing how much those imports affect the purchasers as well as the domestic competitors in Korea. According to the HS 4 unit, the range of imports with the country of origin indication should be 55.2% of all imports, but it turned out there were actually 87.6% of them, according to the number of the import declarations in the first half year of 2010. The government's investigation on the infraction of the country of origin indication is conducted in the stages of customs and distribution into market. As a result of recent 4 years government's investigation into the imports with the infraction of the country of origin indication, the rate of inspection was averagely 3.6% of the reported number of imports in the stage of customs, the rate of the infraction of the country of origin indication cases was 0.14% of the total reported number, and 3.85% of the total actually inspected number. The investigation in the stage of distribution was below 20% level of the stage of customs inspection, on the number of caught cases basis. A survey of 4 categorized imports such as Watches, Tools, Glasses frames, and Clothes, which are assumed to happened frequently with the infraction cases, shows that the decreased sales rate of the domestic competitors was averagely 18.8% and the extent of the damage on consumers was 34.7% of the purchased prices, with both rates resulted from the investigation in the stage of distribution into market.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.131-137
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• 2014

Although illegal reproduction of cartoon books are prevalent with rapid growth of webhard services and smartphone use, fingerprinting technology for product identification, as seen in music and videos, has not been developed yet. This leads to indiscriminate illegal reproduction of cartoon books, causing great amount of copyright damages from copyright infringement of the rightful owners. The copyright R&D project granted from the Korea Copyright Permission (Project Title: Identification and Copy Protection Technology of Bookscaned Text/Comic Books) has been carried out in order to develop technology to effectively identify illegal reproduction and distribution of scanned cartoon books. The developed technology will contribute to increase of royalty payments and robust ecosystem of cartoon book markets. The study is to propose an enhanced implementation model for identification of scanned cartoon books on the basis of hierarchical symmetric difference feature algorithms adopted from existing feature extraction algorithms for video.

• KDI Journal of Economic Policy
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• v.18 no.3_4
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• pp.3-61
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• 1996

소비자 보호 및 효율적 자원배분, 기업의 안전증진 유인제공, 제도의 국제적 조화를 위하여 제조물책임법(製造物責任法) 제정의 필요성이 제기되고 있다. 현재 제조물로 인한 사고는 민법(民法)에 의하여 보상받고 있으나 그 입증책임이 과중하고, 현재 우리나라 생산물배상책임보험(生産物賠償責任保險)이 전체 손해보험에서 차지하는 비중은 0.1%에 불과(미국 10%)하여 그 비용이 아직 미미하므로 제조물책임법제(製造物責任法制) 도입의 안전증진효과가 경제적 손실보다 클 것으로 예상된다. 법제정시의 기본방향은 소비자에게 단순히 보상을 제공하는 법제가 아닌, 기업의 책임과 제품결함이 밀접히 연관되어 배상(賠償) 및 사고억제(事故抑制)의 유인과 효과를 극대화하는 것이어야 한다. 추정규정의 도입은 소비자(消費者) 피해구제(被害救濟)를 용이하게 하지만, 디자인 및 경고결함(警告缺陷)과 결합되면 제조자가 제품사고의 모든 가능성에 대해 완벽한 정보를 가지지 않는 한 제조자의 책임이 되어 제조물책임(製造物責任)의 불확실성(不確實性)을 높이고, 결과적으로 기업에게 절대책임(絶對責任)을 부과하게 되어 제품개발과 혁신을 위축시키는 등의 부정적(否定的) 영향을 초래할 위험이 크다. 따라서 결함의 추정은 인정하지 않아야 하며, 제품개발 및 혁신을 도모하기 위해 개발위험항변(開發危險抗辯)은 인정되어야 한다. 손해배상액(損害賠償額) 상한(上限)을 두지 않는 것이 경제적으로 효율적이고 연대책임을 인정하여 유통업자의 안전제고유인(安全提高誘因)도 강화하는 것이 효과적이다. 중소기업을 포함한 모든 기업에게 입법후 1년 정도의 준비기간(準備期間)을 주는 것이 바람직할 듯하며, 배상책임보험(賠償責任保險)은 의무화하지 않는 것이 경제적으로 효율적이다. 기계, 전자, 운송용기기, 건설, 화학, 식 의약품, 가스제품, 완구, 운동용구 등이 영향을 크게 받을 것으로 예상되지만 법제이용(法制利用)의 편의가 개선되기 전에는 소송의 증가는 미미하리라 예상된다.

• Journal of the Korea Institute of Building Construction
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• v.17 no.3
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• pp.219-225
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• 2017

The durability factors of concrete has been researched by many researchers. Among the chemical ingression by acid, alkali, or salt, specially the ingression by sulfate has been actively studied and reported. Generally, for the oil type chemical, it is reported to cause the excessive expansion of cement mortar and further to cause the collapse, while there was no enough research on influence of oil type, relationship with microstructure of mortar, and collapse pattern. Therefore, in this research, using the various oils from general market, the degradation properties of the mortar mixtures with various mix designs were evaluated. according to the experiment, Bio diesel damaged worst and the mix design with less cement content showed the worst damage against oils.

• Journal of KIISE
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• v.42 no.9
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• pp.1100-1108
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• 2015

Classes.dex, which is the executable file for android operation system, has Java bite code format, so that anyone can analyze and modify its source codes by using reverse engineering. Due to this characteristic, many android applications using classes.dex as executable file have been illegally copied and distributed, causing damage to the developers and software industry. To tackle such ill-intended behavior, this paper proposes a technique to encrypt classes.dex file using an AES(Advanced Encryption Standard) encryption algorithm and decrypts the applications encrypted in such a manner in order to prevent reverse engineering of the applications. To reinforce the file against reverse engineering attack, hash values that are obtained from substituting a hash equation through the combination of salt values, are used for the keys for encrypting and decrypting classes.dex. The experiments demonstrated that the proposed technique is effective in preventing the illegal duplication of classes.dex-based android applications and reverse engineering attack. As a result, the proposed technique can protect the source of an application and also prevent the spreading of malicious codes due to repackaging attack.