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PCB형 코일을 이용한 비대칭 광픽업 액추에이터의 성능분석
신경식(Shin, KyungSik),홍구(Hong, Goo),김진기(Kim, JeenGi),전영진(Jun, YoungJin),이두환(Lee, DooHwan),배원철(Bae, WonCheol),이재걸(Lee, JaeKul),임장영(Im, JangYoeng) 한국소음진동공학회 2004 한국소음진동공학회 논문집 Vol.14 No.9
'Coil' occupies very much important position in delivering driving force of optical pick-up actuators. Up to now the main stream has been a winding coil type actuator, but actuators using FP-Coil(fine pattern coil) have been considered for the more compacted and simple manufacturing process and have variously spreaded the application fields by product. We have tried to design actuators using PCB-Coil(printed circuit board coil) which has benefits in terms of price and manufacturing process. Especially this research has two main things to reduce the vibration of sub-resonance and to assure the DC sensitivity among the performances of asymmetric optical pick-up actuator with PCB-Coil.
이장송(Jangsong LEE),신경식(Kyungsik SHIN),이상미(편집자) 육군사관학교 화랑대연구소 2013 한국군사학논집 Vol.69 No.3
This study investigates the course of and principles underlying US Army's reform efforts following the Spanish-American War. It focuses on how the two perspectives that had clashed from the end of the civil war, namely military professionalism that argued for a considerable size of regular forces during peacetime and the concept of "citizen soldier" that argued for a limited size of regular forces during peacetime and the use of citizen soldiers to overcome a crisis, affected the Army reform. Specifically, the second section of this study examines the US Army's reform efforts during the period from the end of the Civil War to the beginning of the Spanish-American War. The third section deals with the intra-organizational conflicts in the military establishments among the Secretary of War, Staff Bureaus and the Commanding General of the Army. The fourth section studies the organizational and operational problems revealed during the Spanish-American War. The fifth section is about the reforms performed by Elihu Root who vigorously led the military reforms as the Secretary of War. The sixth section explores how the reform proposals obtained the legal status and how the Reform Acts modified the original reform proposals.