• Transactions of the Korean Society of Machine Tool Engineers
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• v.15 no.1
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• pp.49-55
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• 2006

The effect of coating temperature with regard to surface properties of TiN-coated layer on hard metal(WC-Co) are experimentally investigated. Hardness, surface roughness, TiN coating thickness and adsorption force were measured in order to evaluate the effect of coating temperature. The two-way ANOVA method is used in order to evaluate the experimental data. In AIP processing, It is concluded that the furnace temperature in the range of $400^{\circ}C\~500^{\circ}C$ affected to a little increasing the number of production with the coating temperature.

• Journal of the Korean Magnetic Resonance Society
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• v.24 no.2
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• pp.38-42
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• 2020

WW domains are small protein modules consisting of three-stranded antiparallel β-sheet, and involved in the protein-protein interaction for various biological systems. We overexpressed and purified WW2 domain from human AIP4/Itch (a member of Nedd4 family) using a pH/temperature dependent cleavage system. The backbone assignments of WW2 domain were completed, and secondary structure was predicted. Furthermore, backbone flexibility of WW2 domain was determined by ¹H-¹⁵N heteronuclear NOE and amide hydrogen exchange experiments. The structural information would contribute to the structural determination of WW2 domain as well as the interaction study of WW2 domain with various binding partners.

• Journal of Advanced Marine Engineering and Technology
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• v.18 no.2
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• pp.1-17
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• 1994

잠수함추진방식은 크게 원자력 추진과 재래식 추진으로 나눌수 있다. 최근에는 재래식 추진방식과 하이브리드 개념으로 운용될 수 있는 AIP(Air Independent Propulsion)방식도 활발히 연구되고 있다. AIP추진으로는 폐회로 디젤기관추진(Closed Cycle Diesel Engine Propulsion), 연료전지추진(Fuel Cell Propulsion), 스터링기관추진(Stirling Engine Propulsion) 및 폐회로터빈추진(Closed Cycle Turbin Propulsion) 등이 있다. 이러한 잠수함 추진체계에 대해 앞으로 크게 세부분으로 나누어 그 현황과 발전추세를 살펴보고자 한다. 즉, 초기의 순수전기추진방식으로 불리는 재래식 추진체계, 재래식 추진방식의 한계를 극복하기 위해 최근 활발히 연구되고 있는 외기와 무관한 추진장치인 폐회로 추진체계, 그리고 궁극적으로는 에너지의 문제로 귀착되어 거의 무한대의 에너지원을 가지고 있는 원자력 추진체계로 구분하여 그 현황과 발전내용을 살펴 봄으로써 잠수함추진체계의 국내연구 개발방향정립에 조금이나마 보탬이 되었으면 합니다. 또한 차세대 추진장치로 불리는 전자유체 추진방식에 대해서는 한국박용기관 학회지 1993년 4월호 "박용전자유체(MHD) 추진장치"를 참조하시기 바랍니다.조하시기 바랍니다.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.407-410
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• 2000

본 연구에서는 UMTS[1]에서의 보안 서비스를 실험하고 검증하기 위한 ASPeCT[2]에서 제시한 AIP[3,4] 프로토콜을 위한 개선된 키 복구 프로토콜을 제안한다. AIP 프로토콜은 사용자와 VASP 간에 이루어지는 인증과 지불 초기화를 위한 프로토콜이며 이를 기반으로 하여 이동 통신 기반의 전자상거래가 실현될 수 있다. 제안된 키 복구 프로토콜은 검증 가능한 비밀 공유 프로토콜[5,6,7]을 기반으로 하여 다수의 키 복구 기관과의 연관을 통하여 개선된 안전성을 제공하고 악의적인 사용자가 잘못된 비밀 정보를 키 복구 기관(KRA)에게 위탁하는 것을 방지한다.

• Proceedings of the Korean Nutrition Society Conference
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• 2003.10a
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• pp.202-202
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• 2003

• Proceedings of the Korean Nutrition Society Conference
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• 2003.10a
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• pp.201-201
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• 2003

• Tuberculosis and Respiratory Diseases
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• v.51 no.1
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• pp.59-64
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• 2001

Nonspecific interstitial pneumonia (NSIP) was first described as a new category of idiopathic interstitial pneumonia in 1994. This is a disease with a more insidious onset and has a chronic course. The histological findings are unusual for other idiopathic interstitial pneumonia cases (usual interstitial pneumonia, diffuse interstitial pneumonia, and acute interstitial pneumonia). In contrast to NSIP, acute interstitial pneumonia (AIP) has an acute onset and a fulminant course with the rapid development of respiratory failure. A pathological examination demonstrated characteristic diffuse interstitial fibrosis, hyaline membranes, thrombi, and architectural derangement. Here we report a 48-year-old woman who was diagnosed pathologically NSIP, but with a rapid progressive course similar to AIP.

• Land and Housing Review
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• v.14 no.2
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• pp.1-17
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• 2023

In Korea, the population size of the elderly is rapidly increasing, and housing for them is emerging as an important issue. In particular, Aging in Place (AIP) has steadily been presented as a direction of welfare for the elderly. This study empirically examines the effect of the interactions of the elderly with their children on residential mobility for older Koreans. To do so, this study employed random effect logistic regression models with the dataset of the 2008-2020 Korean Longitudinal Study of Aging. The findings are as follows. First, it was found that the interaction with their children increased the probability of residential mobility for older Koreans in both metropolitan areas and non-metropolitan areas. Second, as age increased, the interaction with their children tended to further promote residential mobility for older Koreans, but such effects varied depending on related variables. Third, it was confirmed that the possibility of further promoting residential mobility for older Koreans increased through the interaction effects of the variables associated with the interaction with their children. This study suggests policy implications for the residential mobility of older Koreans, i.e., whether the interactions with their children improve independent residential environments by enhancing housing stability, in terms of AIP.

• Journal of the Korean Society for Heat Treatment
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• v.20 no.2
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• pp.78-83
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• 2007

CrN coatings were deposited by cathodic arc ion plating method on the SKD11 steel substrates. Atmosphere temperature of $350^{\circ}C$, arc current of 90 A, nitrogen partial pressure of 1.0-5.3 Pa, and negative bias voltage of 30-135 V were selected. The characteristics of microstructure were investigated with XRD. Hardness, adhesion and friction coefficient measured by microhardness tester, scratch tester, and ball on disk tribometer. Microstructures depended on nitrogen partial pressure and bias voltage. The preferred orientation of the films was changed from (200) to (111) with decreasing pressure and increasing bias voltage. Adhesion properties related with microstructure, but microstructure changes slightly influenced on hardness and friction properties. The critical load.($Lc_1$) and hardness of CrN films deposited at 5.3 Pa, -30 V condition were 55 N(HF1), $2157{\pm}47\;Hk_{0.025}$. The friction coefficient were about 0.5 under dry condition.

• Proceedings of the Korean Nutrition Society Conference
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• 2003.10a
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• pp.203-203
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• 2003