• Journal of Life Science
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• v.25 no.9
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• pp.1014-1020
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• 2015

This study suggests that fermented rice bran extract contains natural antioxidants. The contents of bioactive materials (e.g., polyphenolic compounds and flavonoids), antioxidative properties (DPPH (α,α'- diphenyl-β-picrylhydrazyl) free radical scavenging activity, Fe reducing, Cu reducing power, peroxidation of linoleic acid and rat hepatocyte microsome) were tested by in vitro experimental models using fermented rice bran (FRB) extract. The concentrations of phenolic compound and flavonoid were 19.92 mg/g and 11.56 mg/g, respectively. In oxidation in vitro models using DPPH free radical scavenging activity, (free radical scavenging activity 69.8%) Fe reducing power and Cu reducing power (effect of dose-dependent manner), Fe²⁺/ascorbate induced linolenic acid peroxidation by ferric thiocyanate and thiobarbituric acid (TBA) methods (inhibition activity 81%), and autooxidation of rat hepatic microsomes membrane (lipid peroxidation inhibition activity 38%), antioxidative activities were stronger in FRB extract than FRS (Fermented Rice and Soybean, positive control) extract and, these effects were dose-dependent manner. From these results, FRB extract was shown to have the most potent antioxidative properties and contain the highest amounts of antioxidative compounds such as phenolic compounds and flavonoids. Overall, these results may provide the basic data to understand the antioxidative properties of fermented rice bran for development of functional foods.

• Journal of Gifted/Talented Education
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• v.15 no.2
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• pp.35-57
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• 2005

As the results of studies based on the Russian Activities-Oriented Theory, the gifted students in many fields have common insights for the true nature of the problem, or the actual state. From Russian Activities-Oriented Theory of view, gifted students have the ability to discern the essential elements involved in each actual state and change of state of things, and to solve the problem, based on these elements. Enhancing these abilities of the students, the educator can develop the average student into a gifted one. This study result of the Russian specialist suggests the possibility of a stream of education that can develop gifted students. Hence, this paper discussed the points and processes of formation of the Russian Activities-Oriented Theory, and inquired on what is the true nature of the problem or the meaning of actual state and how it affects the studies of the student. The paper also investigated the actual conditions of wrong learning about some mathematical concepts and discussed the role of insights to the true nature of the problem in the learning process of the student.

• Membrane Journal
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• v.28 no.1
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• pp.1-20
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• 2018

Fresh water is an important resource for humans, and pressure-driven membrane technology has been widely known as an energy-efficient method to obtain water resource. However, membrane fouling phenomenon, which is one of the major issue during operation, deteriorates membrane permeability. These fouling is usually affected by interaction between surface of membrane and various foulants, therefore, modification of membrane's surface is one of the methods to improve fouling-resistance. This review focuses on the method to modify surface of pressure-driven membranes such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO). Specifically, there are two different surface modification methods: (1) adsorption and coating as the physical modification methods, (2) cross-linker, free radical polymerization (FRP), atom transfer radical polymerization (ATRP), plasma/UV-induced polymerization as the chemical modification methods. This review introduces the physico - chemical surface modification methods reported in recent papers and suggests research directions for membrane separation which can increase membrane fouling resistance.

• Science of Emotion and Sensibility
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• v.9 no.1
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• pp.39-48
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• 2006

This study was carried out to investigate sound sensation of Korean traditional silk fabrics with similar sound pressure levels (SPL) and to identify secondary physical factors excluding SPL which determine sound sensation of the fabrics. Sounds of the silk fabrics tended to be perceived differently from one another as for some of sensation such as clearness ant roughness. They were felt more strongly in aspects of loudness, roughness, and highness than of softness, sharpness, clearness, and pleasantness. Subjective clearness, roughness, and highness were significantly correlated with some of sound parameters including roughness(z), ${\Delta}L,\;and\;{\Delta}f$. Especially, both of clearness and roughness which were varied among the fabrics were found as determined by ${\Delta}L$. This result means that ${\Delta}L$ as well as roughness(z) and ${\Delta}f$ could be utilized secondary to SPL in order to satisfy some of human sensibility for sound from traditional silk fabrics without variation of physical loudness.

• The Korean Journal of Air & Space Law and Policy
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• v.25 no.2
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• pp.113-137
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• 2010

The international community has done a lot of effort to improve the aviation safety. The new high technologies, systems and development of navigation equipments considerably improved the level of aviation safety. However, the aviation accident rate has been showing unchanged status without the decline since 1980. It means it is difficult to secure enough safety by the existing efforts to improve the aviation safety, eventually needs new methods for the accident prevention. With this in mind, the nations interest new methods that can consider a countermeasure by realizing potential risk factors before fatal accidents. In other words, that is to analyze and share the safety information collected from accidents by establishing aviation safety information system. To establish international aviation safety information system, each country's aviation accident incident reporting systems are need to be established. Also aviation safety data taxonomy is need to be standardized. Then, aviation users will communicate the information efficiently. This study investigates and considers each country's aviation accident incident database taxonomy for the analysis of the aviation data and the necessary prevention activity. This will contribute to a better international aviation safety and strengthen the country's aviation diplomacy.

• Journal of the Korean Society of Food Science and Nutrition
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• v.26 no.2
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• pp.314-318
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• 1997

This study was performed to examine the effects of Meju supplementation to high cholesterol diet on lipid metabolism in rats. Male Sprague-Dawley rats were divided into two groups(Steamed soybean, Meju) and were fed with 0.5% cholesterol diet. Serum and liver lipid profiles and fecal bile acids excretion were examined after four weeks of experimental diet. Food intake, weight gain and liver weight were not significantly different between the two groups. Total cholesterol concentrations in serum was significantly lower in Meju group compared to steamed soybean group(p＜0.05). HDL-cholesterol, triglyceride, phospholipids and nonestrified fatty acid concentrations in serum were not significantly different between the two groups. Cholesterol, triglyceride, and phospholipids concentrations in liver were not significantly different between the two groups. Fecal bile acid excretion were markedly higher in Meju groups than the group fed steamed soybean(p＜0.05). These results suggest that the cholesterol lowering effect by Meju supplementation might be resulted from the modulation of fecal bile acid excretion in rats.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.317-325
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• 2020

The development of a technique that can monitor the cracks, which is one of the typical types of damage, is necessary to secure the structural safety of elastically restrained cantilever-type beams with a tip mass that is used widely in infrastructure. Impedance techniques have been actively researched to detect cracks, and the cracks were estimated mainly by experimentally investigating the relationship between the crack and impedance signal. This study examined the correlation between the change in the impedance signals due to the crack, and the natural frequency obtained analytically. After updating the analysis model for the intact beam, the impedance signal was measured while gradually inflicting cracks in the cantilever-type beam, and the damage index was obtained. The results were compared with the natural frequencies calculated from the updated analysis model to investigate the correlation. A close correlation was observed between the experimentally obtained impedance damage index, and the analytically calculated natural frequency. Using this correlation, the structural characteristics could be evaluated more accurately from the damage estimation results, and the behavior of the structure could be predicted effectively using the analysis model.

• Proceedings of the Korea Society of Costume Conference
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• 2001.04a
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• pp.41-41
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• 2001

본 연구는 1990년대 밀리터리 패션에서 성적 이미 지의 표현양상을 살펴보고 각각의 미적 특성과 형성 요인을 분석하여 현대 여성의 다양한 미적 가치와 미의식을 이해하고자 한다. 1, 2차 세계대전을 계기로 자연스럽게 등장한 밀 리터리 패션은 20세기 초반에 여성의 사회참여와 지 위 향상으로 인해 실용성과 기능성을 추구하였고 중 반에 들어서면서 히피와 젊은 세대들에 의해 반전운 동의 일환으로 입혀져 안티패션의 의미를 내포하게 되었으며 후반에는 포스트모더 니즘으로 인해 다양성 을 추구하는 복고풍의 패션 트랜드로서 각종 컬혜션 에서 부각되었다. 그 결과 밀리터리 패션은 기존의 남성적 이미지뿐만 아니라 여성적 이미지도 표현하 게 되었다. 이러한 밀리터리 패션에 나타난 성적 이 미지는 권위적 이미지와 공격적 이미지의 남성적 이 미지와 보수적 이미지와 과시적 이미지, 관능적 이미 지의 여성적 이미지로 표현되어 나타났다. 남성적 이미지는 자유주의 페미니즘과 관련하여 남성 중심적 사고 방식에 도전하고자 하는 여성들의 자아의식이 한층 강하게 작용한 일종의 반 패션 현 상으로 권위적 이미지와 공격적 이미지로 특정지을 수 있다. 첫째, 권위적 이미지는 주로 고전적 군복과 제복의 이미지를 차용해 군복이 가지는 권위와 위엄을 표출 하였으며 남성 우월주의에 기초한 영웅주의를 가시 적으로 표현하였다. 이는 떳떳하게 자신의 위치를 세 우고자 하는 여성들의 욕구를 대변하였으며 영웅주 의와 가부장제도가 그 형성요인으로 작용하였다. 둘째, 공격적 이미지는 권위적 이미지에 대한 저 항과 기존의 성 정체성에 대한 저항으로써 전위적인 형태와 해체적인 표현으로 본래의 위엄있는 군복의 이미지를 무너뜨려 남성다웅의 표면적인 메시지를 약화시키고자 하였으며 반체제 정신, 성 정체성에 대 한 저항, 해체주의가 그 형성요인으로 작용하였다. 여성적 이미지는 급진주의 페미니즘과 관련하여 여성 본래의 성을 부각시키고 여성이 주체가 된 여 성중심적 사고로 여성의 감성적 심리를 패션을 통해 표현하고자 하였으며 보수적 이미지, 과시적 이미지, 관능적 이미지로 특징 지을 수 있다. 첫째, 보수적 이미지는 남성적 영역이라고 믿어왔 던 군복에 여성성을 강조하여 가늘고 유연한 실루엣 과 곡선적인 라인, 색채. 심플한 디테일만으로 밀리 터리 패션을 표현하여 남성중심의 이데올로기에서 벗어나 여성도 사회의 중심이 될 수 있음을 시사하 였으며 남성 권위의 추락이 그 형성요인으로 작용하 였다. 둘째, 과시적 이미지는 전통적 군복이 과거의 상 류층 엘리트들만의 아이템이었듯이 현대의 여성들은 신분과 매력의 과시를 표현하고자 금속 단추나 벨트 등 기타장식을 부각시킨 밀리터리 패션을 착용하였 으며 엘리트층에 대한 동경이 그 형성요인으로 작용하였다. 셋째, 관능적 이미지는 신체의 간접적인 노출과 직접적인 노출을 통해 여성의 신체에 의한 에로틱한 관능미를 부여하고자 하였으며 나르시시즘과 보이고 자 하는 욕구, 성적 유희가 그 형성요인으로 작용하였다. 그러므로 밀리터리 패션에 나타난 성적 이미지에 관한 연구는 패션을 통해 자아를 표현하고 미적으로 자기완성의 방편을 삼으려고 한 현대 여성들의 가치 관과 미의식을 이해하며 이를 충족시키고자 하는 패 션 트랜드와 디자인 개발에 도움이 될 것이다.

• Journal of Satellite, Information and Communications
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• v.12 no.4
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• pp.78-86
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• 2017

Japan has a lot of interest about weapons systems development of surrounding national and has invested heavily in securing intelligence assets to get information about them, because of conflict issues between Japan and Russia with four northern islands, China with Senkaku Islands and entry policy into the Pacific. Japan has used a large budget to detect and intercept ballistic missile for reasons of the launch of the Taepodong missile in 1998. After took over SIGINT equipments which U.S. force had operated in 1950s~1960s, Japan made a technological analysis and advanced IT technology to produce superior equipments. Japan's SDF has installed them in 19 locations across Japan. In addition, Japan's JASDF has installed advanced early warning RADAR to detect aircraft and high speed ballistic missile entering JADIZ with S-band in 28 locations across Japan. It is possible to detect missile launch preparations, engine tests, and launch moments at any time for operation of 6 satellites high resolution reconnaissance system and 6 aegis ships. In close cooperation with the US, Japan is accessible to the SBIRS networks which detects the launch of a ballistic missile in neighboring countries. In the future, Because the United States wants Japan to act as part of the United States in East, south Asia, it is believed that the exchange of intelligence on the surrounding countries between two countries will be enhanced.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.4 no.2
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• pp.139-152
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• 2006

A spent fuel storage cask is required to prove the safety of a canister under a hypothetical accidental drop condition. A hypothetical accidental drop condition means that a canister is assumed to be a lee drop on to a pad of the storage cask during loading it into a storage cask. A pad of the storage cask absorbs shock to maintain the structural integrities of a canister under a hypothetical accidental drop condition. In this paper a finite element analysis for various pad structures was carried out to improve the structural integrity of a canister under a hypothetical accidental drop condition. A pad of a storage cask was designed a steel structure with concrete. The 1/4 height of a pad was modified with a structure composed of a steel and a polyurethane foam as a impact limiter. The effect of a shape of a steel structure was studied. The effects of the thickness of a steel structure and the density of a polyurethane foam was also studied.