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정제한,이예경,장준혁,오세웅,양진홍,한준희,옥수열,신상문 한국항해항만학회 2023 한국항해항만학회 학술대회논문집 Vol.2023 No.1
수집된 데이터의 품질을 진단하고 개선하는 것은 품질 관리 측면에 있어 중요하다. 본 연구에서는 항로표지 수집정보의 품질을개선하기 위해 새로운 알고리즘을 개발하고 이를 시험하는 방안에 대해 분석하였다. 개발된 알고리즘은 기존의 알고리즘보다 더욱 정확하고신뢰성이 높으며, 항로표지 수집정보의 오류율을 크게 감소시킨다. 이에 따라, 개발된 알고리즘을 적용함으로써 항로표지 수집정보의 품질을향상시킬 수 있으며, 해상 안전성을 높이는 데 기여할 것으로 기대된다.
슬괵근의 유연성이 여성노인의 균형력과 보행에 미치는 영향
정제순(Jae-Soon Chung) 한국발육발달학회 2017 한국발육발달학회지 Vol.25 No.1
The length of the hamstring muscles is considered to play an important role in both the effectiveness and the efficiency of basic human movements, such as walking and running. In gait they stabilise the knee at initial contact by contracting isometrically at the same time as the vasti, and in terminal swing decelerate the shank by contracting eccentrically. The effects of a hamstring contracture vary and some patients have marked shortening on physical examination but less noticeable effects in gait. The purpose of this study was to estimate Flexibility and Balance, Gait by aging. 108 females(age:69.1±3.1) were categorized according to hamstring flexibility in the sit & reach test and assigned to one of two groups: high hamstring flexibility group: HF(>10cm) or low hamstring flexibility group: LF(<10cm) using sit & reach score. participants were measured in balance(One leg with eyes opened and timed up-and go), gait parameters. All data were analyzed by t - test and Pearson Correlation of SPSS. In the whole subjects group, sit & reach score was increased and related to One leg with eyes opened and timed up-and go(r=..37, .29, -.24) and significant correlation coefficients between sit & reach score and Stance Time, Double Supp. Time, Velocity, Step Length, Stride Length, Step Extremity(r= -.19, -.21, .24, .30, .26, .24). In the subgroup, HF were significantly higher both balance test (One leg with eyes opened and timed up-and go) in the LF(p<.001). HF were significantly higher gait parameters (Cadence, Stance Time, Double Supp. Time, Velocity, Step Length, Stride Length, Step Extremity) in the LF(p<.05, p<.01). In conclusion, to prevent a decrease in gait performance due to hamstring tightness, stretching exercise is recommended for elderly women with limited hamstring flexibility.