1/f fluctuation characteristics can be seen in various natural phenomena, such as breezes, streams, candle flames and the luminous patterns of fireflies. It is said that the 1/f fluctuation are comfortable for human beings. ...

The design of frontal driver seat cushion in 1000cc minicar is very important in economy sides and maintenance costs. The best design of driver seat cushion can prevent backache and work-related musculoskeletal disorder ...

본 논문은 사물인터넷 보안용 경량 암호 알고리듬 중, ‘128비트 블록 암호 LEA’의 암호화 블록 하드웨어 구현에 대해 기술한다. 라운드 함수 블록과 키 스케줄 블록은 높은 처리성능을 위하여 병렬회로로 설계되었다. 암호화 블록은 128비트의 비밀키를 지원하며, FSM 방식과 24/n단계(n = 1, 2, 3, 4, 8, 12) 파이프라인 방식으로 설계되었다. LEA-128 암호화 블록을 ...

In recent years, it has become increasingly difficult to conduct a launch test condition for ammunition. As the main item of this study, the 155MM illuminating ammunition(M485A2, M118) is a long-term storage (more than ...

This paper presents a concise description of concepts and its logical adaptations for the development of vibration theory during the evolution of dynamics in the eighteenth century. With the mathematical modelings originated ...

In order to create more jobs and cope with big change of economic paradigm, a self employed creative company is suggested as an alternative mean. The understanding of relationship between performance and characteristics ...

Purpose: Aircraft engine failures contribute significantly to overall aircraft failures, making up approximately 60% of incidents. In intricate systems like aircraft, the failure of a single component can affect the entire ...

Promotion of a closed-loop supply chain requires disassembly systems that recycle end-of-life (EOL) assembled products. To operate the recycling disassembly system, parts selection is environmentally and economically carried ...

In this paper, we study the optimality of 2-level resolution V minimal fractional factorial designs which can be constructed by using a partially balanced array. Moreover the relative efficiencies of such designs are ...

The design of driver seat cushion is very important in order to prevent accident and backache. Appropriate seat cushion should be made to distribute the contact pressure evenly and reduce the peak pressure and the high ...