To suggest a standard concerning with the arrangement of bridge equipment, the authors conducted the video observations with 3CCD (charge coupled device) cameras installed on the ceil of the bridge for monitoring the working activities of two bridge teams (the skipper/mate1 and the skipper/mate2) in a Korean coastal large trawler(gross tonnage: 139) for five days from July 30th. 2010 and analyzed of the data. Work elements coded by the work activities were input on the sheet of work analysis by the time unit of 1 sec according to the time occurred. A single work element among the work activities for every 5 minutes was denoted as the number of occurrence. The frequency of equipment usage was limited only in the usage of the equipment. In the case of the navigation and the towing net two ranks were integrated and analyzed. On the other hand, in the case of the casting net and the hauling net, two processes were integrated to as one and then analyzed separately as two ranks. As the results, 15 elements of work was carried out between two bridge teams for the observation; lookout, radar, GPS plotter, fish finder, net monitor, fishing deck, RPM indicator, rudder angle indicator, compass card, for maneuver; steering, ship speed control, trawl winch operation and external communications, paper works and others. It was found that the work load of the skipper per 5 minutes accordance with the navigation, the casting net, the towing net and the hauling net are 20.5 times, 11.9 times, 38.0 times and 9.5 times respectively, the mates are 65.2 times, 66.5 times, 85.7 times and 59.1 times respectively. The radar was shown the highest frequency of the equipment usage and the next was the fish finder, the GPS plotter and the external communications in the case of the navigation. In the case of the towing net the frequency of usage was high the ranking as the radar, the net monitor, the fish finder, the GPS plotter, the steering system and the external communications. In the case of the integrated process both of the casting and hauling net the trawl winch was shown the highest frequency to the skipper and the next was the GPS plotter and the radar, and the steering system was shown the highest frequency to the mate and the next was the radar, the ship speed control system, the GPS plotter, the net monitor and the fish finder.

노인장기요양보험제도의 실시와 함께 많은 요양보호사가 양성되어 휴먼 서비스를 제공하고 있지만 이들의 직무스트레스요인이 적절히 관리되지 못함으로 인해 개인과 조직차원의 부작용이 나타나고 있다. 본 연구는 요양보호사의 직무스트레스 원인을 파악하고 인력관리와 조직관리에 시사점을 제공하기 위해 요양보호사의 직무특성이 직무스트레스에 미치는 영향과 직무갈등의 조절효과를 분석하였다. 실증분석결과는 다음과 같다. 첫째, 과업중요성과 과업정체성은 직무스트레스에 정(+)의

To investigate the fatigue characteristic of upper limbs, this study analyzed RMS(root mean square) and MPF(mean power frequency) value between initial and terminal stages of each experiment condition. And the effect of intermittent endurance time was eva

본 연구는 연속적인 두 분절 움직임에서 두 번째 목표물의 난이도 변화에 따른 하지 동작의 제어 특성에 대하여 규명하였다. 시작지점에서 출발하여 첫 번째 분절 움직임을 완성한 후 곧 바로 두 번째 분절 움직임을 실시하는 순서로 연결하여 동작을 수행하도록 지시하였다. 첫 번째 목표물은 고정시킨 반면 두 번째 목표물의 크기와 거리에 변화를 주어 분절간 움직임의 형태를 동작 시간과 속도, 그리고 영점교차 등의 운동학적 측정을 통하여 분석하였다. 연구결과, 두 번째 목표물의 거리 조건은 첫 번째 분절 움직임 수행에 영향을 미치는 것으로 나타나 맥락-의존 효과가 관찰되었다. 이러한 결과는 동작의 상대적인 순서에 대한 제어가 운동 수행을 담당하는 효과기(effector)와는 무관하게 상위 제어체계에서 조직화되고 실행된다는 것을 시사한다. 반면 목표물의 크기 조건은 하지 동작의 움직임 계획과 실행에는 크게 관여하지 않는 것으로 나타났다. 이러한 결과는 과제-특수적 운동 환경과 하지 동작의 제어 형태에 기인한다고 볼 수 있다.