1.Comparison of Three Different Slip Meters under Various Contaminated Conditions.
Safety and Health at Work 2012;3(1):22-30
OBJECTIVES: To challenge the problem of slipperiness, various slipmeters have been developed to assess slip hazard. The performance of in-situ slipmeter is, however, still unclear under the various floor conditions. The main objectives of this study were to evaluate the performance of three kinds of slipmeters under real conditions, and to find their dynamic and kinematic characteristics, which were compared with gait test results. METHODS: Four common restaurant floor materials were tested under five contaminants. Slipmeters and human gaits were measured by high speed camera and force plate to find and compare their dynamic and kinematic characteristics. RESULTS: The contact pressures and built-up ratio were below those of subjects. The sliding velocity of British Pendulum Tester was above those of subjects, while those of BOT-3000 and English XL were below those of subjects. From the three meters, the English XL showed the highest overall correlation coefficient (r = 0.964) between slip index and Ra, while the rest did not show statistical significance with surface roughness parameters (Ra, Rz). The English XL only showed statistical significance (p < 0.01) between slip index and contaminants. The static coefficient of friction obtained with the BOT-3000 showed good consistency and repeatability (CV < 0.1) as compared to the results for the BPT (CV > 0.2) and English XL (CV < 0.2). CONCLUSION: It is unclear whether surface roughness can be a reliable and objective indicator of the friction coefficient under real floor conditions, and the viscosity of contaminants can affect the friction coefficient of the same floors. Therefore, to evaluate slipperiness, the performance of the slipmeters needed to improve.
Floors and Floorcoverings
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Friction
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Gait
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Humans
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Restaurants
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Viscosity
2.Clinical Outcomes of Robot-assisted Arm Rehabilitation in Stroke Patients.
Jungsoo KIM ; Si Woon PARK ; Yongseok LEE ; Hyojin SEO
Brain & Neurorehabilitation 2015;8(1):46-52
OBJECTIVE: We conducted a retrospective data analysis to review the results of robot-assisted arm rehabilitation in post stroke patients during past 2 years and find out positive influences of the outcomes. METHOD: We measured improvements of arm function longitudinally in a group of sixty-four stroke patients, who participated in the robot-assisted arm therapy from January 2012 to December 2013. Treatment session lasted 30 to 40 minutes, 2 to 5 times a week. For at least more than one month, we used the InMotion2.0 (Interactive Motion Technologies, Watertown, MA, USA) and measured outcomes with the Fugl-Meyer assessment-upper extremity (FMA-UE), Korea-modified Barthel index (K-MBI) and InMotion robot arm evaluation index. Also, analysis on the subgroup was carried out. RESULTS: Following the robot-assisted arm rehabilitation, FMA-UE, K-MBI and InMotion robot arm evaluation index were significantly improved compared to baseline. Mean FMA-UE and K-MBI gain were 4.22 +/- 0.76, 7.63 +/- 1.18 in each. However, in the subgroup analysis, the group with less intensity treatment (640 repetition) did not show any significant improvement. CONCLUSION: This is an observational study showing improvements in arm function following robot-assisted arm rehabilitation compared to baseline, which was significant only in the subgroup who received the intervention longer and more intensity.
Arm*
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Extremities
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Humans
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Observational Study
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Rehabilitation*
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Retrospective Studies
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Statistics as Topic
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Stroke*
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Upper Extremity
3.Evaluation of automated calibration and quality control processes using the Aptio total laboratory automation system
Namhee KIM ; Yein KIM ; Jeongeun PARK ; Jungsoo CHOI ; Hyunyong HWANG
Kosin Medical Journal 2022;37(4):342-353
Background:
The objective of this study was to determine whether manually performed calibration and quality control (QC) processes could be replaced with an automated laboratory system when installed analyzers fail to provide automated calibration and QC functions.
Methods:
Alanine aminotransferase (ALT), total cholesterol (TC), creatinine (Cr), direct bilirubin (DB), and lipase (Lip) items were used as analytes. We prepared pooled serum samples at 10 levels for each test item and divided them into two groups; five for the analytical measurement range (AMR) group and five for the medical decision point (MDP) group. Calibration and QC processes were performed for five consecutive days, and ALT, TC, Cr, DB, and Lip levels were measured in the two groups using automated and manual methods. Precision and the mean difference between the calibration and QC methods were evaluated using the reported values of the test items in each group.
Results:
Repeatability and within-laboratory coefficients of variation (CVs) between the automated system and the conventional manual system in the AMR group were similar. However, the mean reported values for test items were significantly different between the two systems. In the MDP group, repeatability and within-laboratory CVs were better with the automation system. All calibration and QC processes were successfully implemented with the Aptio total laboratory automation system.
Conclusion
The Aptio total laboratory automation system could be applied to routine practice to improve precision and efficiency.
10.A Case of Atypical Divided Nevus of the Penis
Jinsu LEE ; Gi-Wook LEE ; Jun-Oh SHIN ; Dongyoung ROH ; Yeona KIM ; Jungsoo LEE ; Kihyuk SHIN ; Hoonsoo KIM ; Hyunchang KO ; Byungsoo KIM ; Moon-Bum KIM ; Sang-Hyeon WON
Korean Journal of Dermatology 2024;62(10):569-571