• Journal of Positioning, Navigation, and Timing
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• v.13 no.2
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• pp.137-147
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• 2024

This paper presents a novel Long Short-Term Memory (LSTM) network architecture for the integration of an Inertial Measurement Unit (IMU) and Global Navigation Satellite Systems (GNSS). The proposed algorithm consists of two independent LSTM networks and the LSTM networks are trained to predict attitudes and velocities from the sequence of IMU measurements and mechanization solutions. In this paper, three GNSS receivers are used to provide Real Time Kinematic (RTK) GNSS attitude and position information of a vehicle, and the information is used as a target output while training the network. The performance of the proposed method was evaluated with both experimental and simulation data using a lowcost IMU and three RTK-GNSS receivers. The test results showed that the proposed LSTM network could improve positioning accuracy by more than 90% compared to the position solutions obtained using a conventional Kalman filter based IMU/GNSS integration for more than 30 seconds of GNSS outages.

• Journal of The Korean Society of Integrative Medicine
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• v.2 no.1
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• pp.1-14
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• 2014

Purpose : The aim of this study was to investigate Activities of Daily Living(ADL) function recovery of repeated measurement of stroke who received ADL training. Method : Twenty stroke patients were treated by ADL program therapy from May to June. All of in twenty stroke patients, 10 stroke patients take part in Occupational Therapy and 10 stroke patients take part in ADL training for 30 min five times a week during four weeks in M- hospital occupational Therapy treatment room, local in Changwon and Geoje. We used two assessment on is Motor Free Visual Perception Test-Third Edition(MVPT-3) for visual perception the other is Modified Barthel Index(MBI) for ADL. Result : First, Visual Short Term Memory(VSTM) score was changed statistical significance OT intervention group than compare with ADL training group(p<.05). Second, Visaul Closure(VC) score was changed statistical significance OT intervention group than compare with ADL training group(p<.05). Third, Spatial Orientation(SO) score was changed statistical significance OT intervention group than compare with ADL training group(p<.05). The fourth Motor Free Visual Perception Test-Third Edition(MVPT-3) score was changed statistical significance OT intervention group than compare with ADL training group(p<.05). The fifth Modified Barthel Index(MBI total) score was changed statistical significance OT intervention group than compare with ADL training group(p<.05). Conclusion : Therefore, ADL training can be on method the visual perception of stroke patients.

• Journal of Digital Convergence
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• v.18 no.3
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• pp.195-205
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• 2020

The purpose of this study was to investigate the effects of early cognitive training and tailored telephone coaching program for ischemic stroke. Among 28 participants, assigned into the experimental(n=15) and control group(n=13). Only the experimental group was received a 4-week cognitive training and 11 session of tailored telephone coaching. The effect ot the program was evaluated four times(baseline, 4weeks, 8weeks, 12months) using the tool on Depression, Mini Mental State Examination(MMSE), Neuropsychological battery, Activities of Daily Living(ADL). The repeated measures ANOVA showed that the experimental group showed improvement in MMSE, verbal memory and executive function compared to the control group. Especially, the improvement of executive function which is related to ADL was a remarkable result. This suggests that early intervention is very important for recovery cognitive function and independent daliy life after stroke, and periodic telephone coaching should be done together for mid-to long term effects.

• Journal of The Korean Society of Integrative Medicine
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• v.2 no.3
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• pp.1-7
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• 2014

Purpose : The purpose of this study was to evaluate the influence of Lowenstein Occupational Therapy Cognitive Assessment(LOTCA) and Activities of Daily Living(ADL) by CogPack program in elderly with Alzheimer's dementia. Method : The subjects of this study, elderly diagnosed with Alzheimer's dementia, 8 patients were picked up, who were agreed with this research. Cognitive training for 6 weeks, which consisted of 3 times per week, 30 min of memory, attention and performance with cogpack program. Cognitive and ADL measured by LOTCA and FIM. The SPSS Ver. 14.0 statistical program was used for data processing. The significance level for statistical inspection was set as 0.05. Result : In comparison of LOTCA was significantly correlated in the pre and post test but FIM was not significantly correlated in the pre and post test. Conclusion : Therefore, the CogPack program is useful to improve the LOTCA in elderly with Alzheimer's dementia.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.394-395
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• 2022

Exergames are playing an important role in healthcare/rehabilitation. It has also been used to improve motivation among patients with reduced cognition. The purpose of this pilot study was to evaluate the feasibility of using augmented reality (AR) with game-based cognitive-motor training programs for executive function, restricted and repetitive behaviors (RRBs) in children with autism spectrum disorder. Sixteen children aged 6 -16 years were randomly allocated to the experimental group and control group. Outcome measures were performed before and after the intervention and included executive function, restricted and repetitive behavior. A satisfactory survey was conducted post-intervention. A statistically significant improvement was observed in working memory and cognitive flexibility in the experimental group (P<0.05). However, despite no statistical improvements in cognitive inhibition and four subscales of RRBs, promising changes were observed in all the subscales of the executive function and the behavioral outcomes. Parents appreciated the program and children enjoyed the interaction with the AR game-based training. The findings of this preliminary feasibility study showed that AR using Kinect v2 motion with a cognitive-motor game content can be used for children with autism. However, there is a need for conducting a large-scale study to evaluate his effectiveness on executive function and restricted and repetitive behaviors.

• Korean Journal of Adult Nursing
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• v.26 no.1
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• pp.34-45
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• 2014

Purpose: The purpose of this study was to investigate the effect of laughter therapy and cognitive reinforcement program on self-efficacy, depression and cognitive functions of the elderly with mild cognitive impairments (MCI). Methods: The study design was a non-equivalent control group pre and posttest design. Thirty-six subjects over the age of 65 with a diagnosis of mild cognitive impairment were assigned either to a treatment or a comparison group. Data were collected from February 7 to March 27, 2012 in the dementia supporting center. An eight week treatment program that included laughter therapy coupled with a cognitive reinforcing program including hand exercise, laughter dance routine, laughter technic and cognitive training for attention, memory, orientation and execution skill. Results: MoCA-K (t=-6.86, p<.001) and Stroop test CW correct (t=-2.54, p=.008), self-efficacy (t=-3.62, p=.001) in the treatment group were significantly higher than those of the comparison group. Reported depression (t=2.29, p=.014), Stroop test CW error (U=53.50, p<.001) in the treatment group was significantly less than the comparison group. Conclusion: In this study, the treatment was effective in improving self-efficacy, cognitive function and reducing depression in the elderly with MCI.

• International journal of advanced smart convergence
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• v.8 no.1
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• pp.176-183
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• 2019

Rhyme of Truce is an educational program that helps you develop the ability to cope with cyber violence rightly. we aim to produce educational contents that will last a long time in the memory of specially children. By combining the room escape game and Leap motion / VR, the program reflects the user's motion and action in real time. The Keyboard Worrier comes into contact with the user and causes violence, and the user who is attacked by the monster see several negative messages written in red and hears abuses sound. Users enter the virtual space decorated as the cyber world. They can experience cyber-violence indirectly but vividly, and if language violence, which has been overlooked and recognized only as "letters", is executed offline, it will directly wonder if cyber-violence should also be regarded as a means of violence. Users have the opportunity to cope with violence autonomously. When a user is attacked by an in-game monster, there are two ways to choose from. First, fighting against with a keyboard (which is a symbol of language violence) just like a monster. Second, report the abuser to cyber bureau police. Both methods make them to escape the room, but when they get out of the room and return to the home and read the message through the monitor, users can recognize which action was right for.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.21 no.3
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• pp.125-142
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• 2017

In this paper, development of the three-dimensional structural analysis is performed by applying FETI-local method. In the FETI-local method, the penalty term is added as a preconditioner. The OPT-DKT shell element is used in the present structural analysis. Newmark-${\beta}$ method is employed to conduct the dynamic analysis. The three-dimensional FETI-local static structural analysis is conducted. The contour and the displacement of the results are compared following the different number of sub-domains. The computational time and memory usage are compared with respect to the number of CPUs used. The three-dimensional dynamic structural analysis is conducted while applying FETI-local method. The present results show appropriate scalability in terms of the computational time and memory usage. It is expected to improve the computational efficiency by combining the advantages of the original FETI method, i.e., FETI-mixed using the mixed local-global Lagrange multiplier.

• Journal of Korea Entertainment Industry Association
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• v.13 no.8
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• pp.603-610
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• 2019

This pilot study investigated the effects of a portable computerized cognitive training system on the visual-perceptual function of stroke patients with mild cognitive impairment. Subjects were twelve stroke patients with mild cognitive impairment, who were assigned to an experimental group (n=6) or a control group (n=6). All subjects were trained in their respective groups for 30 min/day, five times a week, for four weeks. In each session, the experimental group received a portable computerized cognitive training program, and the control group received conventional cognitive training. The Motor-Free Visual Perception-3 (MVPT-3) was used to measure subjects' visual-perceptual ability. The MVPT-3 total scores for both groups significantly improved after the intervention (p<.05). The total score on the MVPT-3 and the score on the visual short-term memory subcategory of the MVPT-3 significantly improved for the experimental group compared to the control group (p<.05). These findings suggest that the portable computerized cognitive training system might be effective to improve the visual-perceptual function of stroke patients with mild cognitive impairment.

• Journal of Korean Biological Nursing Science
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• v.4 no.2
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• pp.151-166
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• 2002

This study was conducted for the evaluation of the effect of Dementia prevention nursing program on Urinary 17-KS, 17-OHCS, and Blood Na, Cl, K, Ca, P, cholesterol. The sample for the present study was composed of 16 demented elderly in D care center for the elderly in K city. The Dementia prevention nursing program consisted of concept memory training, music therapy, and art therapy. The program was performed twice a week and about ninety minutes was consumed for one session. The program had been administered for 8 weeks. We checked Urinary 17-KS, 17-OHCS, and Blood Na, Cl, K, Ca, P, cholesterol before and after the program. Statistical analysis was performed by using descriptive statistics and Wlicoxon signed rank test of SAS system for window 6.12. The result were follows : 1. Urinary 17-KS 17-KS score increased significantly after intervention(p=0.005). 2. Urinary 17-OHCS 17-OHCS score increased significantly after intervention(p=0.001). 3. Blood Na, Cl, K, Ca, P, cholesterol Na(p=0.0002), Cl(p=0.0001), K(p=0.0001), Ca(p=0.0028), decreased significantly after intervention. The results show that Dementia prevention nursing program increases Urinary 17-KS, 17-OHCS, and decreases Blood Na, Cl, K, Ca, P, cholesterol. In conclusion, the Dementia prevention nursing program can be used for the effective measure to decrease stress of the Demented elderly.