• Proceedings of the Korea Database Society Conference
• /
• 2001.11a
• /
• pp.428-434
• /
• 2001

전통적인 수작업을 통한 서비스 Update 수행 개선 필요. WMT 하의 Multimedia Streaming File 보안 필요. 기본 Web Page 및 HTML 하의 Player Skin의 통합 필요. 인터넷 재방(VOD/AOD)서비스에 대한 신속한 Update 구현 (중략)

• Journal of the Microelectronics and Packaging Society
• /
• v.13 no.3 s.40
• /
• pp.39-45
• /
• 2006

This study was investigated the thermal properties of underfill with various epoxy resins using thermal analysis methods such as differential scanning calorimetry (DSC), thermo gravimetry analysis (TGA), dynamic mechanical analysis (DMA) and thermo-mechanical analysis (TMA). And, the adhesion strength of the underfills/FR-4 substrate was evaluated. The glass transition temperature (Tg) of underfill which was composed the cycolaliphatic epoxy resin was lower than that of underfill which was not composed the cycolaliphatic epoxy resin. The thermal degradation of underfill was composed of two processes, which involved chemical reactions between the degrading polymer and oxygen from the air atmosphere. The coefficient of thermal expansion (CTE) of underfill which was composed the cycolaliphatic epoxy resin was higher than that of underfill which was not composed the cycolaliphatic epoxy resin. The excessive curing temperatures caused a weak boundary layer of epoxy resin, which resulted in a deterioration of mechanical properties in the epoxy resin and thus led to poor adhesion property between the underfill/FR-4 substrate.

• Korean Journal of Clinical Pharmacy
• /
• v.21 no.1
• /
• pp.1-5
• /
• 2011

Purpose: 본 연구는 토끼의 음경해면체 조직에 대한 인진쑥의 에탄올 추출물과 그 성분 중의 하나인 scoparone의 효능을 평가하고자 하였다. Methods: 체중이 2.5-3.0 Kg의 New Zealand백색 가토를 사용하여 음경 전체를 골반골로부터 분리하여 요도를 제거한 후 백막을 보유한 음경해면체를 2 mL organ chamber 관류모형에 연결하고, $10^{-5}M$의 phenylephrine을 관류하여 음경해면체를 수축시킨 후 0.1, 0.5, 1, 2 mg/mL의 에탄올 추출물 또는 $10^{-7}$, $10^{-6}$, $10^{-5}$, $10^{-4}M$의 scoparone을 녹인 용액으로 관류시켜 음경의 장력 변화를 측정하였다. 기존의 발기부전 치료제로 사용되는 실데나필에 대한 인진쑥과의 상호작용을 검토하기 위하여$10^{-6}M$의 scoparone과 $10^{-8}M$의 실데나필을 병용 사용 시 음경해면체 조직에 대한 효과도 함께 검토하였다. Results: 인진쑥의 에탄올 추출물은 phenylephrine으로 전처리하여 수축시킨 음경해면체 평활근을 농도 의존적으로 효과적으로 이완시켰으며 scoparone도 음경해면체 조직에 대한 이완작용 또한 농도 의존적으로 강한 효과를 나타내었다. 실데나필로 전처리한 음경해면체 조직에 대한 scoparone의 효과는 scoparone만을 단독으로 관류시킨 조직에서의 효과보다 강하게 나타났으며 실데나필과 scoparone의 병용사용은 실데나필의 효능을 2배 이상 증가시켰다. Conclusions: Scoparone은 실데나필의 음경해면체평활근 작용을 증가시킴으로써 실데나필에 완전히 반응하지 않는 환자들의 발기부전 치료효과 향상에 유용할 것으로 전망된다.

• Proceedings of the CALSEC Conference
• /
• 2000.08a
• /
• pp.137-149
• /
• 2000

ㆍ STEP-NC : ISO 14649 부문 - CAO/CAPP/CAM과 다양한 CNC application을 대상 - CAD/CAM 도메인과 CNC를 연결시킴으로서 상위 정보와 shop floor 정보의 information highway 개통 의의 - IMS Project의 일환으로 Aachen대학을 중심으로 현재는 문법의 제정 단계 - 수년내에 ISO 14649는 새로운 CNC 표준언어로 확정 확실시 ㆍ STEP-NC: 제어기 부문 - ISO 14649 정보를 활용하면 다양한 지적기능을 보유하는 자율제어 시스템 구축가능 - 개방형 제어구조가 권역별로 제시되고 구현되고 있는 단계 - ISO 14649 정보에 기반한 지적제어기는 아직 미달의 연구과제 ㆍ 파급효과 및 대응 (국제적인 기술경쟁력 확보) - CAD/CAM 시스템에의 ISO 14649 포용 필요 - CNC 제어기의 ISO 14649 판독 능력 필요 - ISO 14649에 기반 한 지적제어기의 구현에 관한 연구 필요 - 적극적인 International Interface 필요 - 방대한 연구: 산학연의 연구 개발과 국가적인 정책 배려 필요

• Journal of the Microelectronics and Packaging Society
• /
• v.16 no.3
• /
• pp.39-43
• /
• 2009

In this paper, the flow characteristics of underfill material driven by capillary action between flip-chip and substrate were investigated. Also, the effects of viscosity level and dispensing point of underfill on flow characteristics were investigated. Flip chip package size was $5mm{\times}5mm{\times}0.65^tmm$, the diameter of solder bump was 100 ${\mu}m$, and the pitch was 150 ${\mu}m$. It was full grid area-array type with 1024 I/Os. The glass substrate was used and the gap between the chip and substrate was 50 ${\mu}m$. For the experimental study, three different underfills with different viscous properties($2000{\sim}3700$ cps), and two different types of dispensing methods(center dot and edge dot) were used. The flow characteristics and filling time of underfill were investigated by using CCD camera. The results show that the edge flow was faster than center flow due to the edge effect, which was caused by the resistance of solder bumps. In case of edge dot dispensing type, the filling time was faster due to the large edge effect, compared to center dot dispensing type. Also, it was found that the underfill flow was faster and the filling time decreased as the viscosity level of underfill was decreased.

• The Journal of Korean Philosophical History
• /
• no.41
• /
• pp.9-38
• /
• 2014

Hanhweon-dang Kim Goeng-pil(1454~1504) sublimated ethics whose lead was opened up by Jeong Mong-ju in late Goryeo as one scholarly tendency. Kim Goeng-pil was called 'the father of ethics in Joseon' and has been respected as a model of ethicist for 400 years since then. Following Kim Goeng-pil, Confucian scholars of Joseon cultivated perseverance through Xiaoxue and the perseverance was sublimated to Confucian scholars' energy and then that of state, which served as driving force to keep the national legacy. Kim Goeng-pil suggested how to study with Xiaoxue and sought moral human beings and ethically ideal societies based on strong practicability which is required in Xiaoxue. Individuals' cultivation and social reform are not at a different dimension. Spirit of 'self-cultivation' that Kim Goeng-pil himself demonstrated advanced to pursuit of ethical, ideal state when reaching a level of Jo Kwang-jo. Kim Goeng-pil thought that teaching in Xiaoxue could be achieved through 'Gyeong (敬, respect).' It is the key of Neo-Confucianism in Joseon to control one's mind through the cultivating method of 'Gyeong.' Kim Goeng-pil settled Joseon's Confucianism as 'practical ethics(心學).' Before Kim Goeng-pil, no scholars had well presented the aspects of practical ethics. After King Myeongjong and Seonjo, Confucianism in Joseon worked as the cornerstone of practical ethics. Since mid-17th century, the system of practical ethics had been firmly established with focus on 'Gyeong. Literary men of Kim Goeng-pil and scholars they fostered led the academic and political world of Joseon after mid-16th century. They played the lead in Sarim faction's(士林派) ruling after King Seonjo came to throne. The very foundation which sublimated Joseon to the ethically ideal state and made the Dynasty a 'state of Sarim' was actually laid by Kim Goeng-pil.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.22 no.1
• /
• pp.87-94
• /
• 2008

A method for improving current THD of Valley-fill rectifier is proposed in this paper. The proposed topology combines a boosting inductor with Valley-fill rectifier which carry out AC/DC conversion and PFC simultaneously The boosting effect by PWM switching makes low THD current and improve of Valley-fill rectifier. The operation modes and THD of input current are analyzed as applied the boosting inductor, and the optimum value of boosting inductor is determined A 100[W] single-stage converter has been designed and tested. Experimental results are resented to verify the validity of the proposed method.

• Land and Housing Review
• /
• v.13 no.3
• /
• pp.83-102
• /
• 2022

After the earthquake in South Korea (Gyeongju and Pohang), interest in securing the seismic performance of piloti buildings was increasing. In this paper, a study was conducted to propose a seismic retrofit method for piloti building of LH. The proposed seismic retrofit method considers the priority of seismic retrofit and the type of core. To verify the effectiveness of the proposed seismic retrofit method, computational analysis was performed according to the type of core. As a result, it was confirmed that the seismic performance was improved when the proposed seismic retrofit method was used.

• KOREAN POULTRY JOURNAL
• /
• v.43 no.12
• /
• pp.94-95
• /
• 2011

국무총리 산하 경제인문사회연구회는 10월 5일 제 122차 이사회를 열어 한국농촌경제 연구원 12대 원장에 이동필 선임연구위원을 선임 임명하였다. 이동필 신임 원장은 30여 년간 연구원에서 연구위원, 정보관리실장, 농촌발전연구센터장 등 역임하면서 외길 연구인생을 걸어온 농정에 정통한 학자로 유명하다. 취임을 계기로 농업과 농촌 연구를 통해 위기를 기회로 만들 수 있도록 노력할 뜻을 강조하며, 앞으로 3년의 임기기간 동안 경영성과와 연구실적 등에 대하여 매년 경제 인문사회연구회의 평가를 받게 된다. 이동필 신임원장을 만나 앞으로 농촌경제연구원장으로써 활동계획 및 포부에 대해 들어보았다.

• 한국벤처창업학회:학술대회논문집
• /
• 2008.11a
• /
• pp.337-356
• /
• 2008

2008년 3월 19일 법무부로부터 포이즌 필 도입에 관한 보도 자료가 공시된 시점을 중심으로 국내 비 금융 상장사의 시장반응을 살펴보았다 그 결과 모든 기업에 대해 시장은 부정적인 반응을 보였다. 대주주 지분이 낮을수록 그리고 소액주주 지분이 높을수록 시장의 부정적인 반응은 약화되었다. 한편 재벌기업은 제외하면 독립기업보다. 그룹에 속한 기업들이 더욱 부정적인 시장반응을 보였다. 이는 계열구조가 복잡한 기업일수록 터널링의 가능성이 높기 때문에 그룹기업이 포이즌 필을 도입할 때는 대주주의 사적이익 추구가 강화된다고 시장이 해석하고 있음을 뜻한다.