• Title/Summary/Keyword: LIB

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Effects of IP Lookup on Interworking between MPLS Network and MPOA Networks (MPLS 망과 MPOA 망의 연동 성능에 대한 IP 룩업의 영향)

  • 김동호;이숭희;김은아;이종협;이형호
    • Proceedings of the Korea Multimedia Society Conference
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    • 2000.11a
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    • pp.319-322
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    • 2000
  • 본 논문은 MPLS 망과 MPOA 망을 ATM을 이용하여 심리스 연결이 가능한 연동 방안을 제시한다. MPOA의 Shortcut VC와 MPLS의 레이블을 이용한 LSP가 IP 룩업 지연을 최소화하고 심리스 연결을 가능하게 하였지만, 이들을 연동하기 위해서는 연동 노드의 IP 룩업이 필요하므로 종단간의 심리스 연결을 위한 연동 방안이 필요하다. MPLS 망과 MPOA 망의 심리스 연동을 위해 치들의 연동 기능을 이용한 연동 방안과 함께 MPLS의 레이블 값과 ATM VC의 VPI/VCI를 이용하여 LIB에 연동기능을 구성한 심리스 연동 방안들을 제시하고 비교 분석한다.

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New Synthetic Method of Perfluoro-Silanes for the Stable Electrolyte of Lithium Ion Battery Application

  • Koh, Kyungkuk;Sohn, Honglae
    • Journal of Integrative Natural Science
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    • v.10 no.3
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    • pp.171-174
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    • 2017
  • Non-hydrolyzable fluorinated organosilicon compounds as an eletrolyte for the application of lithium-ion batteries (LIB) are synthesized. New synthetic method for the perfluorinated organosilicon compound containing spacer such as ethyl and propyl group with cyano moiety instead of ethylene glycol to prevent hydrolysis and to promote conductivity are developed in one pot reaction with moderately high yield. Air-sensitive boron trifluoride etherate is no longer required in this reaction. The products are characterized by spectroscopic analysis.

Modified Fontan Operation [Report of 3 Cases] (Modified Fontan 술식의 치험 3례)

  • 오상준
    • Journal of Chest Surgery
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    • v.18 no.4
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    • pp.549-556
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    • 1985
  • Since the first report on a successful method of correcting tricuspid atresia by Fontan and Baudet in 1971, several alternative surgical techniques have been described. Bjrk`s modification was performed three patients, 3, 8, and 9 years of age, in our Hanyang University Hospital. The diagnoses were tricuspid atresia type lb, tricuspid atresia type lib and d-TGA with huge VSD and valvular PS. None had previous palliative procedures. The patients were operated on with good results. The CVP after operation was 10-14 mmHg and early extubation was done. Postoperatively, none had peripheral edema or ascites. Postoperatively, all three were acyanotic and had improved physical capacity compared with their preoperative status.

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Effects of Cola Intake on Glucose Metabolism and Oxidative Stress in Weanling Male Rats Fed a Moderate Fat Diet

  • Park, Soo-Bong;Park, Mi-Kyung;Park, Chun-Hee;Jun, Dong-Wha;Lee, Won-Kuk;Park, Sunmin
    • Nutritional Sciences
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    • v.6 no.4
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    • pp.195-200
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    • 2003
  • In recent years, the prevalence of type 2 diabetes mellitus has dramatically increased in Korea as the diet has rapidly become westernized. We determined the effect of long-term cola intakes on glucose metabolism and oxidative stress in weanling male Sprague Dawley rats consuming a moderate fat diet Thirty male rats, born from 6 female rats, were randomized into cola or water drinking groups. For 28 weeks, all rats were provided with an ad lib solid diet having 33 percent of its metabolisable energy as fat In addition, rats of the cola group were provided with ad lib cola instead of water. The daily total caloric intake did not differ between groups. The rats in the cola group consumed a higher proportion of carbohydrates, and their mean body weight and fasting serum insulin level were lower than that of the control group. Whole-body glucose disposal rates measured by an euglycemic hyperinsulinemic clamp were higher in the cola group. However, lipid peroxide levels in kidney tissue were higher in the cola group than in the control group. Superoxide dismutase activity in kidney tissues was lower in the cola group compared to the control group, while glutathion peroxidase and catalase activities were not significantly different between the two groups. In conclusion, long-term cola intakes decreased insulin resistance, but increased oxidative stress in kidney tissue due to decreased SOD activities, which may lead to kidney damage. Thus, moderate changes in insulin resistance may not affect the status of oxidative stress, and vice versa.

Effect of $ZnCl_2$ on Formation of Carbonized Phenol Resin Anode

  • Kim Han-Joo;Hong Ji-sook;Son Won-Ken;Park Soo-Gil;Oyama Noboru
    • Journal of the Korean Electrochemical Society
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    • v.3 no.2
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    • pp.85-89
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    • 2000
  • For replacing Li metal at Lithium ion Battery(LIB) system, we used carbon powder material which prepared by Pyrolysis of Phenol resin as starting material. It became amorphous carbon by Pyrolysis through it's self condensation by thermal treatment. Amorphous carbon can be doped with Li intercalation and deintercalation because it has wide interlayer. However, it has a problem with structural destroy due to weak carbon-carbon bond. So, we used $ZnCl_2$ as the pore-forming agent. This inorganic salt was used together with the resin serves not only as the pore-forming agent to form open pores, which grow into a three-dimensional network structure in the cured material, but also as the microstructure-controlling agent to form a loose structure doped with bulky dopants. We used SEM in order to find to difference of structure, and can calculate the distance of interlayer by XRD analysis. CV test showed oxidation and reduction.

The Study of Two-dimensional Chemical Distribution about Soil using Laser Spectroscopy (레이저 분광법을 활용한 토양 2차원 화학적 분포도 검출 연구)

  • Yang, Jun-Ho;Yoh, Jai-Ick
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.45 no.6
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    • pp.523-530
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    • 2017
  • Laser-Induced Breakdown Spectroscopy (LIBS) which a plasma is irradiated at a specific wavelength depending on the material when a high-energy laser is irradiated, and a Raman spectroscopy which measures rotation and vibration in molecules as light-scattering phenomenon occurs, are attracting attention as a space exploration technology because of the advantages of high accuracy and real-time analysis, and the ability to perform long-range detection. In this study, the tendency of the laser spectrum according to the change of the soil component was analyzed by laser spectroscopy and the two - dimensional chemical distribution was conducted based on the trend of laser spectrum. We have also established the environment of Mars (4-7 torr) and lunar atmosphere (<1 torr) in experimental setup, to prove that it is possible to measure by difference of soil chemical composition using LIBS and Raman spectroscopy even in artificial space environment.

A Experimental Study on the Development of a Book Recommendation System Using Automatic Classification, Based on the Personality Type (자동분류기반 성격 유형별 도서추천시스템 개발을 위한 실험적 연구)

  • Cho, Hyun-Yang
    • Journal of Korean Library and Information Science Society
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    • v.48 no.2
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    • pp.215-236
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    • 2017
  • The purpose of this study is to develop an automatic classification system for recommending appropriate books of 9 enneagram personality types, using book information data reviewed by librarians. Data used for this study are book review of 501 recommended titles for children and young adults from National Library for Children and Young Adults. This study is implemented on the assumption that most people prefer different types of books, depending on their preference or personality type. Performance test for two different types of machine learning models, nonlinear kernel and linear kernel, composed of 360 clustering models with 6 different types of index term weighting and feature selections, and 10 feature selection critical mass were experimented. It is appeared that LIBLINEAR has better performance than that of LibSVM(RBF kernel). Although the performance of the developed system in this study is relatively below expectations, and the high level of difficulty in personality type base classification take into consideration, it is meaningful as a result of early stage of the experiment.