• Journal of the Korean Society of Marine Environment & Safety
• /
• v.25 no.7
• /
• pp.953-960
• /
• 2019

The Miller cycle is a diesel engine that has been developed in recent years that it can reduce NOx and improve fuel consumption by reducing the compression ratio through intake valve closing (IVC) time control. The Miller cycle can be divided into the early Miller method of closing the intake valve before the bottom dead center (BDC) and the late Miller method of closing the intake valve after the BDC. At low speeds, the late Miller method is advantageous as it can increase the volumetric efficiency; while at medium and high speeds, the early Miller method is advantageous because of the high internal temperature reduction effect due to the expansion of the intake air during the piston lowering from IVC to BDC. Therefore, in consideration of the ef ects of the early and late Miller methods, it is necessary to adopt the most suitable Miller method for the operating conditions. In this study, a two-stage turbo charge system was applied to four-stroke engines and the process of enhancing the Miller effect through a reduction of the intake and exhaust valve overlap as well as the valve change adjustment mechanism were considered. As a result, the ef ects of fuel consumption and Tmax reduction were confirmed by adopting the Miller cycle with a two-stage supercharge, a reduction of valve overlap, and an increase of suction valve lift.

• The Science & Technology
• /
• s.506
• /
• pp.24-28
• /
• 2011

• Transactions of the Korean Society of Automotive Engineers
• /
• v.3 no.6
• /
• pp.1-7
• /
• 1995

Vehicle has two kinds of mirrors to check the rear. Especially inner rear-view mirror(room mirror) is easy to vibrate. A vibration of vehicle inner rear-view mirror affects safe driving. This study presents both of analysis of cause of mirror vibration and resolution in order to improve that throughout analysis by elasticity theory, FEM, and test.

• Journal of the Korean Professional Engineers Association
• /
• v.40 no.6
• /
• pp.41-47
• /
• 2007

본 원고는 2007. 9. 29(토) 한양대학교 한양종합기술연구원에서 개최된 제1회 전국기술사대회에서 전 미국기술사회 로버트 에쓰 밀러 3세(Robert S. Miller III) 회장이 특별 강연한 내용입니다.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.50 no.2
• /
• pp.70-79
• /
• 2013

Recently, there has been introduced various types of pairing computations to implement ID based cryptosystem for mobile ad hoc network. The Miller algorithm is the most popular algorithm for the typical pairing computation such as Weil, Tate and Ate. In this paper, we analyze the feasibility of concrete data fault injection attack, which was proposed by Whelan and Scott, in terms of regardless of round positions during the execution of the Miller algorithm. As the simulation results, the proposed attack that can be employed to regardless of round positions and coordinate systems is effective and powerful.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.51 no.1
• /
• pp.172-178
• /
• 2014

This paper presents a new model of the Miller effect. The new Miller effect model is obtained from the accurate AC gain which includes the effect of the output capacitance of the common-source (CS) amplifier. The new Miller effect model consists of the series connection of a capacitance and a parallel RC circuit, one at the input and the other at the output. The frequency response obtained by the new Miller effect model is equal to that obtained from the original circuit. Even though the new model is complicated, the 3-dB frequency can be easily estimated by using the open-circuit time constants method without the node analysis.

• The Korean Journal of Applied Statistics
• /
• v.25 no.1
• /
• pp.125-138
• /
• 2012

Recent assessments of the biosimilarity of biologic products have received considerable global attention. A clinical trial should be conducted to assess the biosimilarity of a biosimilar product and a innovator biological product. In this paper we will describe several methods for the implementation of clinical trials and statistical analysis, a real international case and related international guidelines.

• Proceedings of the KIPE Conference
• /
• 2010.07a
• /
• pp.43-44
• /
• 2010

본 논문에서는 저전압 구동 인버터의 게이트 구동회로 설계 시, 밀러 캡 영향이 야기할 수 있는 암 단락 현상 방지를 위한 양전원 방식의 게이트 구동회로 설계를 제안한다. 제안하는 회로는 부트스트랩 방식의 0~15[V] 의 전원을 사용하고, 커패시터와 다이오드를 통하여 마이너스 전압을 생성하며 이를 통해 양전원으로 게이트를 구동한다. 이는 단 전원 방식에 비하여 밀러 캡의 영향을 줄일수 있고 이를 통해 스위칭 시 소자의 스트레스를 감소시키며 또한 암단락을 방지한다. 제안하는 회로를 시뮬레이션과 실험을 통해 검증하였다.

• The Bulletin of The Korean Astronomical Society
• /
• v.43 no.2
• /
• pp.47.4-48
• /
• 2018

밀러-유리 실험은 1950년대 처음으로 초기 지구의 대기 방전 실험으로 아미노산을 합성한 실험이다. 생명의 기원에 대한 내용이 교과서나 책에 실릴 때마다 빠지지 않고 등장하는 실험으로, 학생들의 탐구 활동 연구주제로 실험을 설계하여 진행하였다. 실험실 설계부터 시작하여 실험 과정인 유리기구 세척, 진공 만들기, 기체주입과 방전실험을 소개한다. 실험 장치가 완성 된 후, 실험 시간 23시간 중 약 4시간 동안 방전하여 갈색 용액을 얻는데 성공하였다. 아민기와 반응하는 ninhydrin 반응에서 양성반응을 보여 아미노산 수용액임을 확인하였다.

• KOREAN POULTRY JOURNAL
• /
• s.122
• /
• pp.46-50
• /
• 1979