본 연구는 벼 대체 사료작물인 사일리지용 옥수수를 논토양에 파종하여 조사료를 생산하는데 있어서 생육특성, 화학적 특성, 무기물함량 및 영양수량을 검토하여 논토양에 적합한사일리지용 옥수수 품종을 선발하기 위하여 실시하였다. 실험설계는 11품종을 3반복으로 하여 5월 1일 파종하고 8월 24일 수확하였다. 그결과를 보면 초장과 엽수에 있어서는 KPO가다른 품종에 비하여 유의적으로 높게 나타났지만(P<0.01) 암이삭 길이와 둘레는 P32W86이높게 나타났다. 경경도와 암이삭 수는 P32P75가, 착수고 및 녹색도에 있어서는 NC 7117이높게 나타났다(P<0.01). 근계수와 당도에 있어서는 P3394가 높게, 엽장과 엽폭은 각각P31P41과 P32T83이 높게 나타났다. 건물수량에 있어서는 P3156 (19,782 kg) > NC 7117(18,708 kg) > P31N27 (18,093 kg) > KPO (17,772kg) > P32K61 (17,649 kg/ha) 순으로 높게 나타났다(P<0.01). 영양성분 중 조단백질과 조지방은 각각 P32W86과 P31P41에서 높게 나타났다(P<0.01). NDF와 ADF 함량은 각각 KPO와KIO에서 높은 경향치를 보였지만 다른 품종과비교 시 유의적인 차이는 나타내지 않았다. 조섬유 함량은 KIO > KPO > P31P41 > P32W86> P3156 순으로 높게 나타났다(P<0.01). 총광물질 함량은 KPO가 9,775 mg/kg으로서 다른품종에 비하여 가장 높게 P3394는 6,651 mg/kg으로서 가장 낮게 나타났다(P<0.01). 총 구성아미노산 함량 및 지방산 함량은 각각 P32K61및 KIO가 각각 높게 나타났다(P<0.01). 영양수량 중 ha 당 조단백질, 지방산, 구성아미노산 및 TDN 생산량은 각각 P3156이 유의적으로높게 나타났다(P<0.01). 그러나 조지방 및 광물질 수량은 각각 P31P41 및 KPO가 각각 높게나타났다(P<0.01). 이상의 결과로 볼 때 사일리지용 옥수수를 논토양에서 재배 시 생육특성, 사초생산량 및 영양수량을 고려하면 P3156, NC 7117 및 P31N27 품종이 우수한 것으로 생각된다.

Thirty normal adults were tested to measure the electrical activity of the anterior (AD), middle (MD), and posterior portion (PD) of the deltoid muscle and sternal portion of the pectoralis major muscle (PM) during the performance of four upper extremity PNF diagonal patterns with elbow flexion angle in , , and . The PNF patterns in which these muscles function optimally have been theoretically advanced by Kabat and further described by Knott and Voss. They theorize that the MD should be most active with shoulder flexion, abduction, and external rotation (D2F); the PD with shoulder extension, abduction, and internal rotation (D1E); the AD with shoulder flexion, adduction, and external rotation (D1F); and the PM with shoulder extension, adduction and internal rotation (D2E). The patterns were performed through range of motion, with an isometric contraction performed in the shortened range. When the EMG activity of AD, MD, PD and PM in its optimal patterns was measured, it does not have significant difference among fixed elbow flexion angle , , and (p>.05). In addition, suggestions were made for study of patients who exhibit imbalance of muscle strength and have muscle weakness.

콘크리트는 외부로부터 침투하는 열화 인자들의 침투에 의해 철근이 부식하고 구조재료로써의 성능이 저하된다. 발수제를 직접 도포하거나 혼입하는 방법이 연구되고 있고, 본 연구에서는 발수제의 뭉침 및 떠오름을 방지하기 위하여 다공성 재료인 제올라이트를 혼입한 발수콘크리트 개발을 위한 기초연구를 수행하였다. 제올라이트 치환율에 따른 시험체를 제작하였으며, 접촉각 측정결과 치환량과 접촉각의 크기는 비례하여 증가하는 것을 확인하였다.

This paper present a novel approach to control the lower body power assistive exoskeleton system of a HEXAR-CR35 aimed at improving a muscular strength. More specifically the control of based on the human intention is crucial of importance to ensure intuitive and dexterous motion with the human. In this contribution, we proposed the detection algorithm of the human intention using the MCRS which are developed to measure the contraction of the muscle with variation of the circumference. The proposed algorithm provides a joint motion of exoskeleton corresponding the relate muscles. The main advantages of the algorithm are its simplicity, computational efficiency to control one joint of the HEXAR-CR35 which are consisted knee-active type exoskeleton (the other joints are consisted with the passive or quasi-passive joints that can be arranged by analyzing of the human joint functions). As a consequence, the motion of exoskeleton is generated according to the gait phase: swing and stance phase which are determined by the foot insole sensors. The experimental evaluation of the proposed algorithm is achieved in walking with the exoskeleton while carrying the external mass in the back side.

The safety of the ship manoeuver is dependent not only on the inherent characteristics of the ship itself and environmental conditions, but also on the skill and experience of the ship operator. As the ship operator's judgement is related to his experience and skill, based on outside information, piloted controllability also depends upon the effectiveness, accuracy and reliability of various information which is obtainable from navigational equipments and aids to navigation that are available to the ship ope-rator. Although these factors, human factors and informational factors, have been pointed out as major factors which affect the controllability of a ship, there was no a comprehensive examination on the effect of these two factors. In this thesis, therefore, an attempt was made to examine whether or not there is clear indication that these two factors affect the controllability of a ship in reality. Experiments were conducted using the port design simulator of the Korea Maritime University.