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The Contents of newspaper are determined by the elements that intervene in the process of the newspaper production, Since the state and capitalist are the essential elements that restrict contents of newspaper, the intervening forms of the state and the capitalist in the 1950s' Korean newspapers are examined. The problems of this study are as fallows. First, what is the characteristic of the material base that 1950s' Korean newspapers possessed ? Second, in what ways the state intervened in the newspapers and what is the meaning of the interventions. Third, what is the crucial element that conditioned the activities of the newspapers in 1950s. The material base of the newspaper is classified into the productive frces and the relations of production. In this paper, the former is examined as following items ; the scale of the capital and the labor, printing papers and machines, the managemental state. The latter ; the forms of ownership, the management and the labor. The material base of the 1950s' Korean nwspapers reflected Korean capitalist society. Most of the newspaper owners accumulated their capital by taking the aid funds from the state. In 1950s, the accumulation of capital was based on the profits gained in the process of commodity circulation rather than on the surplus value obtained in the process of production. Accordingly the commercial capitalists were the main advertisers and the industrial capitalists had little relation with the newspapers. The state not only intervened in the material bass of the newspapers, but also regulated the activities of the newspapers in 1950s' Korean society. The regulations of the state were as follows; enacting the law, prohibition and suspension of publication , pressure on journalists, preventing distribution, violence against papers. The predominant element that restricted the contents of the 1950s' Korean newspapers was the state. The dominant ideology of the state was anti -communism and the ideology of the papers was also anticommunism. The 1950s' Korean newspapers played the role of the ideological apparatus that transmitted the ideology of the state, anti communism.
Prolonged neuromuscular blockade following succinylcholine may be seen when anticho- linesterase had been administered prior to reverse nondepolarizing muscle relaxant-induced paralysis, possibly anticholinesterase has been reported to inhibit serum cholinesterase activity. Our study was undertaken in order to understand the effect of a nondepolarizing muscle relaxant (vecuronium) following neostigmine pretreatment. In this study, we assessed the effect of vecuronium induced neuromuscular blockade using a train of four, 2 Hz stimulations on ulnar nerve. Patients admitted to our hospital for elective operations were divided into two groups, each group consisting of 16 patients. In group I, vecuronium 0.1 mg/kg was .administered according to the priming principle following normal saline, in group II, vecuronium 1.0mg/kg was administered according to the priming principle following neostigmine 0.05 mg/kg and glycopyrrolate 0.003 mg/kg pretreatment. Then the time for Tl to reach 5% or less(second), and the time for Tl to reach from 25% to 75%(recovery index) were measured in both groups. The time for Tl to reach 5% or less in group I(92.8±14.72 second) and group II(97.5±16.43 seconds) were not siginificant. However the recovery indexof group I(10.2 5±1.93 minute) and group II(8.5±1.80 minute) showed significant shortening in group II(p$lt;0. 05)
광학헤드는 디지털 오디오 및 비디오 장치의 핵심부품으로서 일반 가전제품에서부터 컴퓨터 기억장치 및 게임기까지 광범위하게 응용되고 있으며, 광미디어의 수요가 확대됨에 따라 그 수요도 급속도로 증가되는 추세이다. 본 논문에서는 광학헤드의 핵심 구성요소인 포커스 및 트랙킹 서보용 2축 구동부를 와이어 부동형 외팔보 형태로 설계하고, 시뮤레이션 및 시제작 특성 분석을 통하여 그 설계 타당성을 검증하였다. 또한, 시제작 특성 분석을 통하여, 설계상의 원인외에 2축 구동부의 성능에 악영향을 미치는 조립공정의 인자를 파악하였다. The optical heads as the key parts of digital audio/video players are applied extensively from general household electric appliances to computer memory or game apparatuses, and the demand of them tends to be increased according to the extension of optical medium market. In this paper, the 2-axis actuator, the key component for focus servo and tracking servo of the optical head is designed as a type of the cantilever suspended by 4 wires. The design propriety is verified through its simulation and the characteristic analysis of its mock-ups. The other factors which influence the performance of 2-axis actuators besides the design factors of them, are also verified through the mock-up analysis.
본 논문에서는 레이저 다이오드, 포토 다이오드, 그레이팅 렌즈, 빔 스프릿터가 반도체 공정으로 직접화된 홀로그램 레이저 다이오드와 4 와이어 부동형 엑츄에이터를 이용하여, 시장성이 풍부한 일반 오디오용 광학 픽업을 설계하였다. 또한, 이러한 홀로그램 레이저 다이오드의 특성을 이용하여 초간편 광학계를 구현하므로서, 기존외 제품 대비 조립성과 생산성을 향상시키고, 취부 부품의 수를 줄이고 형상을 단순화하였다. In this paper, the optical pick-up used for general audio/video players having more market share than the others is designed with 4-wire suspension type actuator and the hologram laser diode which laser diode, photo diode, beam splitter, and grating lens are integrated in. This optical pick-up is designed in very simple optical system with the characteristics of hologram laser diode. Thus, it has high productivity, the number of the parts is reduced, and also the shape of the assembling parts becomes simple.