• Bulletin of the Korean Chemical Society
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• v.22 no.10
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• pp.1149-1152
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• 2001

• Journal of Internet Computing and Services
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• v.6 no.5
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• pp.155-166
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• 2005

Currently, almost of all the Internet users have as many IDs as the number of sites they have subscribed for, The users should memorize and input every independent ID and password whenever they want to login to the system. Although ID management system is used to solve this problem, 10 and password management will become more complicated in the forthcoming ubiquitous computing environments because so many computers will be interconnected on various kinds of wired and wireless networks, Furthermore, it is not enough to use the existing single Circle of Trust (COT) ID management system for the forthcoming computing environments. To solve this problem, the paper proposes ID federation models in multiple COT domain and implements an ID federation system that can be scaled to mobile computing environment as well as wired computing environment. The proposed ID federation models has been verified to operate with no problem between the systems in different trust domains by doing the ID scaability test.

• Korean Journal of Environmental Biology
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• v.39 no.4
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• pp.415-422
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• 2021

Cotton is an important fiber crop, and its seeds are used as feed for dairy cattle. Crop biotechnology has been used to improve agronomic traits and quality in the agricultural industry. The frequent unintentional release of LM cotton into the environment in South Korea is attributed to the increased application of living modified (LM) cotton in food, feed, and processing industries. To identify and monitor the LM cotton, a method for detecting the approved LM cotton in South Korea is required. In this study, we developed a method for the simultaneous detection of four LM cotton varieties, MON757, MON88702, COT67B, and GHB811. The genetic information of each LM event was obtained from the European Commission-Joint Research Centre and Animal and Plant Quarantine Agency. We designed event-specific primers to develop a multiplex PCR method for LM cotton and confirmed the specific amplification. Using specificity assay, random reference material(RM) mixture analysis and limit of detection(LOD), we verified the accuracy and specificity of the multiplex PCR method. Our results demonstrate that the method enabled the detection of each event and validation of the specificity using other LM RMs. The efficiency of multiplex PCR was further verified using a random RM mixture. Based on the LOD, the method identified 25 ng of template DNA in a single reaction. In summary, we developed a multiplex PCR method for simultaneous detection of four LM cotton varieties, for possible application in LM volunteer analysis.

• Journal of the Korean Chemical Society
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• v.41 no.10
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• pp.566-574
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• 1997

• Journal of Ginseng Research
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• v.5 no.1
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• pp.56-64
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• 1981

In order to evaluate the mode of action of ginseng saponin. metabolic changes in the plasma of normal and aloxan-intoxicated rats were compared Normal groups were administered only ginseng saponin 0, 5, 50mg/kg for 16 days, but alloxan-intoxicated groups were administered alloxan 25mg/kg for 3 days in addition to ginseng saponin. (1) No significant change in the concentration of glucose, cholesterol, and triglyceride (TG) was observed in normal rats but great inhibitory effect, except elevation of TG, was observed in alloxan-intoxicated rats. However, blood urea nitrogen was elevated in both normal and alloxan- intoxicated rats by administration of ginseng saponin 50mg/kg, and it was considered to be due to the impaired kidney function caused by overdose toxicity. (2) In normal rats, COT and ALP actIn,its were not changed by administration of ginseng saponin but GPT activity was decreased significantly. In alloxan-intoxicated rats, ginseng saponin exerted inhibitory action on the elevation of COT, CPT and ALP activity. But administration of ginseng saponin Smghg was much more effective than administration of 50mg/kg. (3) There fore, we concluded that ginseng saponin has the adaptogenic activity showing little effect on normal metabolism but great preventive action on alloxan-intoxicated rats.

• Special Issue of the Society of Naval Architects of Korea
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• 2011.09a
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• pp.21-24
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• 2011

Oil Tight Bulkhead (O. T. Bulkhead) is one of the most important structural members of oil tankers in the views of vessel's strength and safety. Therefore O.T. bulkhead's strength should be sufficient against relevant loadings, which is normally verified by local scantling requirement and structural strength analysis defined in CSR (Common Structure Rules for Double Hull Oil Tankers). However, there is a weak-able situation when the vertical stiffeners are cut due to the penetration of cargo pipes through O. T. Bulkhead. In addition, CSR does not define how to prove the strength of this case. Therefore it is necessary to verify the structural adequacy in case that several vertical stiffeners are discontinued. This article intends to prove the strength of O. T. Bulkhead with five (5) vertical stiffeners discontinued due to pipes' penetration using the grillage analysis and the finite element analysis and to provide proper reinforcement.

• Journal of IKEEE
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• v.18 no.4
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• pp.593-602
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• 2014

One of the purposes of an artificial neural netowrk(ANNet) is to implement the largest number of functions as possible with the smallest number of nodes and layers. This paper presents a CoreNet which has a multi-leveled input value and a multi-leveled output value with a 2-layered ANNet, which is the basic structure of an ANNet. I have suggested an equation for calculating the capacity of the CoreNet, which has a p-leveled input and a q-leveled output, as $a_{p,q}={\frac{1}{2}}p(p-1)q^2-{\frac{1}{2}}(p-2)(3p-1)q+(p-1)(p-2)$. I've applied this CoreNet into the simulation model 1(5)-1(6), which has 5 levels of an input and 6 levels of an output with no hidden layers. The simulation result of this model gives, the maximum 219 convergences for the number of implementable functions using the cot(${\sqrt{x}}$) input leveling method. I have also shown that, the 27 functions are implementable by the calculation of weight values(w, ${\theta}$) with the multi-threshold lines in the weight space, which are diverged in the simulation results. Therefore the 246 functions are implementable in the 1(5)-1(6) model, and this coincides with the value from the above eqution $a_{5,6}(=246)$. I also show the implementable function numbering method in the weight space.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.06a
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• pp.471-472
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• 2006

COT-OLED는 컬러필터와 백색 유기 EL층을 형성하는 기술로써 Red, Green, Blue 빛을 내는 유기 EL 층을 Hard Mask를 이용하여 독립적으로 증착하는 기존의 OLED소자와는 달리, 사진 식각에 의하여 컬러필터를 형성한 다음 백색 유기 EL층을 Hard Mask를 사용하지 않고 형성하는 제작 방법이다. 본 실험에서는 제작이 어려운 백색 유기 EL층 대신 녹색 유기 EL층를 증착하여 실험하였다.

• Bulletin of the Korean Chemical Society
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• v.20 no.8
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• pp.879-884
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• 1999

The sol-gel process enables the preparation of ceramic thin films ranging in characteristics from dense to highly porous layers. Based on the example of silica layers, this paper focuses on the importance of the choice of the various synthesis parameters to tailor the porosity of the final material and new opportunities associated to the templating effect. The problems related to the characterization of the porosity in the case of thin films are also considered.

• Bulletin of the Korean Chemical Society
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• v.18 no.9
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• pp.1028-1031
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• 1997

Electrostatic interaction is a very important parameter for the membrane selectivity. In this work, the electrical double layer establishment on the surface of metal oxide material from the Stern-Grahame model has been described. Then, some examples of rejection using micro and mesoporous ceramic membranes have been given. A correlation between the charges of the membrane material and the species to be filtered has been precised. Two rejection mechanisms have to be taken into account the size of the solutes and the electrostatic interactions.