• 한국항해항만학회지
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• 제33권9호
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• pp.609-614
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• 2009

The traffic of tug/barges which are carrying construction materials, large plants for harbor development, or offshore structures has recently increased in the coast of Korea. The west and south coast of Korea are always congested due to a lot of islands and traffic concentration. Specially tug/barges have higher probability of marine accidents due to their bad maneuverability than others. Considering the operational circumstance and maneuverability, this study was to develop a wide-area monitoring and control system for tug/barges in the coastal area of Korea. The system was made in the form of three program modules i.e. navigation analysis program module, monitoring and control program module, database module. And seven functions were programmed to monitor and control the tug/barges efficiently. These are ship information search, tug/barge information and track management, designated area and safe navigation zone management, fairway management, accident data management, warning of danger, safety information management.

• Physical Therapy Rehabilitation Science
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• 제11권2호
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• pp.181-188
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• 2022

Objective: The purpose of this study to investigate the correlations among the motor function, balance, and gait velocity and the strength that could explain the variation of gait velocity of chronic stroke survivors. Design: This was a cross-sectional cohort study. Methods: Thirty hemiplegic stroke survivors hospitalized in an inpatient rehabilitation center were participated. The muscle tone of ankle plantarflexor and muscle strength of ankle dorsiflexor were measured respectively with modified Ashworth scale (MAS) and hand-held dynamometer. And the motor recovery and function with Fugl-Meyer assessment (FMA), balance with Berg balance scale (BBS) and timed up and go (TUG) test were measured. Gait velocity was measured with GAITRite. The correlation among motor function, muscle tone, muscle strength, balance, and gait were analyzed. In addition, the strength of the relationship between the response (gait velocity) and the explanatory variables was analyzed. Results: The gait velocity had positive correlations with FMA, muscle strength, and BBS, and negative correlation with MAS and TUG. Regression analysis showed that TUG (𝛽=-0.829) was a major explanatory variable for gait velocity. Conclusions: Our results suggest that gait velocity had correlations with muscle strength, MAS, FMA, BBS, and TUG. The tests and measurements affecting the variation of gait velocity the greatest were TUG, followed by FMA, BBS, muscle strength, and MAS. This study shows that TUG would be a possible assessment tool to determine the variation of gait velocity in stroke rehabilitation.

• 한국항해항만학회지
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• 제43권6호
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• pp.437-443
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• 2019

항로표지는 선박에 대하여 등광, 형상, 색채, 음향, 전파 등을 수단으로 운항 선박에게 위치, 방향 및 장애물의 위치 등을 알려주는 항행보조시설 일체를 의미하며, 주야간 선박항행의 안전을 위한 기본 수단이다. 예인선은 안전을 위해 종류별 최소 설비요건을 마련하여 사고를 대비하고 있지만, 예인삭의 길이, 조류의 영향, 상대적으로 중량이 큰 부선의 타력으로 인한 영향 등으로 예인선과 선회권이 달라, 변침 시 부선이 예인선을 따라가지 못하여 등부표와 추돌하는 사고가 발생하기도 한다. 본 연구의 목적은 두 선박의 물리적 관계를 분석하여 예인선열을 식별하고 등부표와의 위험을 항로표지 관리운영 시스템을 통해 전파하는 기초 시스템을 제시하는데 있다. 연구를 통해 예부선의 사전 식별 가능성을 확인하였고, 위험 전파를 위한 메시지를 설계하고 모의 시스템을 통한 위험 전파 및 전자해도 상에 위험을 표시하였다.

• 한국운동역학회지
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• 제19권3호
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• pp.529-538
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• 2009

본 연구의 목적은 여성고령자의 균형과 관련된 평가항목 BBS(Berg balance scale), SPPB(short physical performance battery), TUG(timed up and go)를 측정하여 COP와의 상관관계를 알아보고자 하였다. 이를 위해 여성고령자 10명을 대상으로 신체기능검사와 정적직립자세 동안 지면경사(평지, 내리막, 오르막경사)에 따른 COP 이동범위와 평균속도를 산출하였다. 여성고령자들의 COP 좌우와 전후 값 비교에서 평지와 내리막, 오르막 모두 전후 값이 유의하게 크게 나타났으며, 좌우와 전후 각 방향에서 지면경사에 따른 유의한 차이는 나타나지 않았다. 신체 기능 점수와 COP 상관관계에서 BBS와 SPPB 점수가 높을수록 COP 이동범위와 평균속도 값은 감소하였으며 TUG 값이 클수록 COP 값이 크게 나타나는 유의한 상관관계를 나타냈다. 고령자들에게 균형과 관련된 신체기능검사와 COP는 지면경사에 따라 유의한 상관관계를 가지므로 임상에서 치료사들은 고령자들의 균형평가 시 COP 변수뿐만 아니라 BBS, SPPB, TUG를 통한 균형평가 활용이 가능하다고 본다.

• 한국항해항만학회지
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• 제35권5호
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• pp.351-358
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• 2011

최근 예부선의 규모가 커지고 등록 척수가 급증하고, 예부선 대부분이 10년 이상의 노후선박으로 사고의 위험성이 크다. 전체 해양사고 건수는 점차 줄어드는 추세이나, 예부선 관련 사고는 줄어들지 않고 있으며, 2010년 해양사고 분석보고서에 의하면 예부선 사고는 전년 동기대비 90% 이상 증가했고, 이 중 충돌사고 다수인 것으로 나타났다. 예부선 사고의 근본 원인 중 예부선 종사자(선원)의 수급 어려움과 이로 인한 종사자의 고연령 저학력 경향이 뚜렷하다. 본 논문에서는 고령 예부선 운항자의 안전운항 교육을 위해, 교육용 콘텐츠 표준 개발방법론에 따라, 교육대상자의 연령 및 승선환경을 고려한 다양한 안전운항 콘텐츠를 개발하였다. 본 연구에서 개발된 안전운항 컨텐츠는 고령 예부선 운항자들에게 실질적인 도움을 주어 해양사고를 막는데 역할을 할 것으로 기대할 수 있다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2009년도 추계학술대회
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• pp.40-41
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• 2009

선박이 항만이나 운하 내에서 이동할 경우 일반적으로 예인선의 도움을 받아 운항하게 된다. 근래에 해상 물동량이 증가하면서 항만이나 운하 등지의 해상 교통이 복잡해지고 해난 사고 발생 가능성이 높아지는 추세이다. 따라서 예인선 및 부선의 조종 성능을 파악하여 전체 예부선 시스템의 운항 안정성을 확보할 필요가 있다. 예부선 시스템은 크게 예인선, 부선, 그리고 예인선과 부선을 연결하는 예인줄의 세 가지 요소로 구성된다. 본 연구에서는 예인선, 부선, 예인줄 각각의 동역학적 특성이 반영된 운동 방정식을 수식화하였다. 그리고 예인선의 수학 모형을 확립하기 위한 구속 모형 시험의 종류 및 범위에 대하여 논한다.

• Physical Therapy Rehabilitation Science
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• 제7권2호
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• pp.54-60
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• 2018

Objective: Persons with chronic stroke fall more often than healthy elderly individuals. The Timed Up and Go test (TUG) is used as a fall prediction tool, but only provides a result for the total measurement time. This study aimed to determine the optimal cut-off values for each of the 6 components of the TUG. Design: Retrospective study. Methods: Thirty persons with chronic stroke participated in the study. TUG evaluation was performed using a wearable miniaturized inertial sensor. Sensitivity, specificity, and predictive values were calculated using the Receiver Operating Characteristic (ROC) curve analysis for the measured values in each section. Optimal values for fall risk classification were determined. Logistic regression analysis was used to investigate the risk of future falls based on TUG. Results: The cut-off values of the 6 sections of the TUG were determined, as follows: sit-to-stand >2.00 seconds (p<0.05), forward gait >4.68 seconds (p<0.05), mid-turn >3.82 seconds (p<0.05), return gait >4.81 seconds (p<0.05), end-turn >2.95 seconds (p<0.05), and stand-to-sit >2.13 seconds (p<0.05). The risk of falling increased by 2.278 times when the mid-turn value was >3.82 seconds (p<0.05). Conclusions: The risk of falls increased by 2.28 times when the value of the mid-turn interval exceeded 3.82 seconds. Therefore, when interpreting TUG results, the predictive accuracy for falls will be higher when the measurement time for each section is analyzed, together with the total time for TUG.

• 대한임상전기생리학회지
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• 제9권2호
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• pp.7-12
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• 2011

Purpose : We studied the correlation between reference voluntary contraction (% RVC) of vastus lateralis (VL) and vastus medialis (VM), Berg balance scale (BBS), and timed-up & go (TUG) test. Methods : We recruited 30 stroke patients from a rehabilitation center at a hospital.? All subjects could walk with or without an assisting device. Subjects were evaluated with % RVC of VL and VM, BBS, and TUG. The data were analyzed using a Pearson correlation coefficient. Results : The % RVC of VL and VM and BBS (p<0.01) showed a significant positive correlation. TUG negatively correlated with % RVC of VL and VM and BBS (p<0.01). Conclusion : Lower extremity muscle activity increases balance and walking ability. We recommend the implementation of lower extremity strength exercises in the rehabilitation of stroke patient.

• The Journal of Korean Physical Therapy
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• 제21권1호
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• pp.41-48
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• 2009

Purpose: The examine the Reliability and Validity of the modified Emory Functional Ambulation Profile (mEFAP), Tinetti. Gait (TG), Timed Up & Go Tes t (TUG), Comfortable Gait Speed (CGS), Berg Balance Scale (BBS) in assessing gait function and balance in elderly person. Methods: The 45 community-dwelling subjects were participated in this study. Reliability was determined by intra-class correlation coefficient (ICC$_{3,1}$), Bland and Altman method (Standard Error of Measurement (SEM), Smallest Real Difference (SRD)). Results: Validity was examined by correlation the mEFAP, TG, TUG, CGS, BBS. The intra-rater reliability were High (ICC$_{3,1}$ : mEFAP=0.95, TG=0.96, TUG=0.94, CGS=0.96, BBS=0.92) and Absolute reliability were excellent (SEM: mEFAP=1.90, TG=0.21, TUG=0.28 CGS=0.25, BBS=0.52), (SRD: mEFAP=5.26, TG=0.58, TUG=0.77, CGS=0.69, BBS=1.44). There were significant correlations between assessment tool (r=.0.58$\sim$0.78, p<0.01) indicating good validity. Our results provide strong evidence that the assessment tool has good reliability, validity for assessing elderly person undergoing rehabilitation. Conclusion: The gait assessment tool is a useful scale for measuring walking function and recovery in elderly person.

• 한국전문물리치료학회지
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• 제11권1호
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• pp.27-34
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• 2004

This study aims to compare the relationship between the Berg Balance Scale (BBS) scores, Timed Up & Go (TUG), Functional Independent Measure (FIM), and subject characteristics. All of the 18 subjects were women between the ages of 68 and 91 (mean=80.2, SD=5.43), and they all lived at the nursing home in Wonju. Balance was measured using BBS, and functional mobility was measured using TUG. FIM was used to evaluate functional independence. Data were analyzed using Spearman correlation. Statistically significant differences were noted between BBS and TUG (r=-.486, p<.05). There were no significant statistical differences between total FIM and BBS, TUG. The FIM items "locomotion" and "communication" showed significant statistical differences between BBS and TUG. The results suggest that FIM may be able to predict dangerous falls in elderly people.