• Physical Therapy Rehabilitation Science
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• v.11 no.4
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• pp.471-477
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• 2022

Objective: The greatest motor impairment after stroke is a decreased ability to walk. Most stroke patients achieve independent gait, but approximately 70% do not reach normal speed, making it difficult to reach a standard of daily living. Therefore, a wearable exoskeleton is recommended for optimal independent gait because different residual disorders hinder motor function after stroke. This review synthesized the effect on gait speed in randomized controlled trials (RCTs) in which gait training using a wearable exoskeleton was performed on post-stroke patients for qualitative and quantitative analysis. Design: A systematic review and meta-analysis of a randomized controlled trials Methods: RCTs using wearable exoskeletons in robotic rehabilitation of post-stroke patients were extracted from an international electronic database. For quality assessment and quantitative analysis, RevMan 5.4 was used. Quantitative analysis was calculated as the standardized mean difference (SMD) and presented as a random effect model. Results: Five studies involving 197 post-stroke patients were included in this review. As a result of the analysis using a random effect model, gait training using a wearable exoskeleton in post-stroke patients showed a significant improvement in gait speed compared to the non-wearing exoskeleton (SMD=1.15, 95% confidence interval: 0.52 to 1.78). Conclusions: This study concluded that a wearable exoskeleton was more effective than conventional gait training in improving the gait speed in post-stroke patients.

• Journal of the Korean Society of Physical Medicine
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• v.18 no.2
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• pp.71-82
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• 2023

PURPOSE: This study examined the effect of training using video content on abdominal muscle thickness, Oswestry disability index (ODI), and pain in college students with chronic back pain. METHODS: Twenty-nine college students with chronic back pain participated in this study. The subjects were assigned randomly to 15 experimental groups who trained using video content and 14 control groups who exercised voluntarily using back exercise leaflets. The video used for the intervention was obtained from YouTube, and the difficulty level of the video was classified into six levels. Both groups participated in the intervention for 40 minutes/day, three times a week for six weeks, and the variables of abdominal muscle thickness, ODI, and pain were compared before and after the intervention. RESULTS: In the experimental group, there were statistically significant changes in the thickness of the internal oblique and transverse abdominis muscles, ODI, and pain after the intervention, except for the external oblique muscle (p < .05). In the control group, there was no statistically significant difference in all variables after the intervention (p > .05). A statistically significant difference in all variables was observed between the experimental group and the control group after the intervention except for the external oblique muscle (p < .05). CONCLUSION: Treatment of chronic low back pain using video content is a possible alternative treatment if quality images are selected and the difficulty levels are adjusted.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.57-58
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• 2022

Concrete mix design is used as essential data for the quality of concrete, analysis of structures, and stable use of sustainable structures. However, since most of the formulation design is established based on the experience of experts, there is a lack of data to base it on. are suffering Accordingly, in this study, the purpose of this study is to build a predictive model to use the concrete mixing factor as basic data for calculation using the DNN technique. As for the data set for DNN model learning, OPC and ternary concrete data were collected according to the presence or absence of admixture, respectively, and the model was separated for OPC and ternary concrete, and training was carried out. In addition, by varying the number of hidden layers of the DNN model, the prediction performance was evaluated according to the model structure. The higher the number of hidden layers in the model, the higher the predictive performance for the prediction of the mixing elements except for the compressive strength factor set as the output value, and the ternary concrete model showed higher performance than the OPC. This is expected because the data set used when training the model also affected the training.

• Journal of the Korean Society of Physical Medicine
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• v.5 no.4
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• pp.633-644
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• 2010

Purpose : This study was to investigate vascular dementia elders's activities of daily living, quality of life index and to determine how much vascular dementia elders is influenced by the 12 weeks combined exercise program with aerobic training and resistance exercise. Methods : Thirty patients with vascular dementia over 65 in B geriatrics hospital were recruited this study. Activities of daily living were measured by I-ADL(instrumental-activities of daily living) and B-ADL(basic-Activities of daily living) and quality of life index was measured by GQOL-D(geriatric quality of life scaledementia). Statistical analysis was used repeated one-way ANOVA to test mean difference by using SPSS 12.0 for windows. Results : After comparing the activities of daily living of experimental group that of control group according to the period of exercise, there were statistically significant differences in I-ADL, B-ADL score test and GQOL-D index test of both experimental and control groups. There was also a significant difference in comparing the results of 12 weeks exercise of the groups. Conclusion : 12 weeks combined exercise program had a good influence on vascular dementia elders's activities of daily living and quality of life index.

• Quality Improvement in Health Care
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• v.1 no.1
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• pp.124-131
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• 1994

Polysomnography is an essential methodology for diagnosing and following up sleep disorders and doing researches on human sleep. Sleep medicine, mainly with the utilization of polysomnographic techniques, has developed itself as one of the promising fields in the 21st century medicine. Korea is not an exception in importing and developing sleep medicine into the conventional medicine. However, it still remains to be clarified what polysomnography is for and how it should be done, considering the relatively recent introduction of sleep medicine into Korea. The author, being a board-certified sleep medicine specailist, having experienced spreading out sleep medicine within Korea for the past four years, and having recently set up a major sleep study facility in Korea at Seoul National University Hospital, attempts in this introductory critical article to review the essential issues related to quality assurance in polysomnographic study of human sleep. Also, unconditional introduction of "automated" sleep scoring system, which has been found to have significantly reduced reliability in various studies including the author's own, is critically reviewed. The author suggests that quality assurance and training program should be initiated and established by a responsible sleep medicine-related organization such as the Korean Association of Sleep Medicine and Psychophysiology.

• Journal of Korean Society for Quality Management
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• v.44 no.2
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• pp.451-466
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• 2016

Purpose: This study was to identify customers' demands in railway services system and then to seek the way to satisfy the customer expectations. Methods: We suggest a Quality Function Deployment(QFD)-based approach comprised of three stages. In first stage, SERVPERF survey was carried out to assess current positions of customer expectations in the market. Then, factor analysis was incorporated into SERVPERF to classify customer expectations for the house of quality. In the second stage, the analytic network process was used to prioritize the importance of the customer attributes. Finally, QFD was performed utilizing customer attributes and their weights. Results: The QFD identified the most important customer expectations as: accident prevention, swift reaction to accident, on-time arrivals and departures of the train. It also shows that driving capability, equipment for safety, and training for disaster are the most critical technical requirements. Conclusion: The results are useful for identifying the customers' demands in railway services systems, and they can contribute to the service quality and customer satisfaction.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.4
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• pp.41-50
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• 2020

The paper aims to investigate auditors, auditing firms and other external factors that affect quality of information technology audit in Vietnam. We conducted 2 types of data collections including direct and on survey. For direct survey, we sent directly to auditors at the training classes organized by State Securities Exchanges Commission. An online survey was established and Google doc link was provided to the Big4 and non-Big4 auditors. We received 138 survey responses in that 90 auditors came from Big4 and 48 auditors from non-Big4 firms. The data are analyzed using a factor analysis and compare means approaches to illustrate the potential IT audit quality factors and identify differences between two groups of auditors. The results show that independence and accounting knowledge and audit skills are the most important factors. And since external auditors perform many assurance services, the independence is critical. The result also shows that the auditors need to have enough competent and professional skills when conducting an audit, especially within an IT environment that requires high quality. The findings suggest a similar pattern of two groups in the context of Vietnam and some factors of auditors and auditing firms appear to have a statistically significant impact on quality of IT audit.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.29 no.4
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• pp.530-540
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• 2019

Objectives: The purpose of this study was to identify factors related with demographic and work characteristics that affect musculoskeletal pain and quality of life among personal assistants for people with severe disabilities. Methods: The subjects were recruited among personal assistant for people with severe disabilities who participated in refresher training held in K-si, Gyeonggi-do Province through convenience sampling. Using a survey instrument developed by the authors, subjects responded to questionnaires concerning muscluloskeletal pain and quality of life. The collected data was analyzed using SPSS 21.0. Basically, collected data was analyzed in terms of frequency, t-test or ANOVA and multiple regression analysis. Results: Total years of work experience and subjective physical workload were associated with the number of pain sites and intensity. Additionally, for quality of life, subjective physical workload was related in the regression model. Conclusions: Based on this study, we identified that characteristics of work affected the musculoskeletal pain and quality of life of personal assistants for the severely disabled, and suggested improvement of the working environment, including musculoskeletal pain prevention education programs during the refresher education for assistants to the severely disabled.

• Journal of muscle and joint health
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• v.28 no.1
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• pp.1-9
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• 2021

Purpose: The study evaluated the effectiveness of health promotion program on the physical fitness and quality of life of elderly women receiving home visiting health care services. Methods: There were 122 elderly women participants. The data were collected between March and December 2019. The participants were provided with the 36-weeks health promotion program consisting of health education, such as nutrition, depression, urinary incontinence, fall, oral care, and exercises, such as stretching, weight-bearing exercise, and elastic resistance training. The balance, muscle strength, flexibility, and quality of life were measured before and after the program. The results were analyzed with paired t-test using the SPSS/WIN 26.0 program. Results: The dynamic balance, muscle strength, flexibility significantly increased. Conclusion: The health promotion program positively affected elderly women in terms of physical fitness, but there are limitations to increasing the quality of life of elderly women. Through this study, it is necessary to be supplemented in improving quality of life of elderly women.

• Journal of the Korea Institute of Military Science and Technology
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• v.24 no.4
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• pp.408-417
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• 2021

This paper describes the quality attributes of an integrated simulation software for weapon systems named Advanced distributed simulation environment(AddSIM). AddSIM is developed as a key enabler for Defense Modeling & Simulation(M&S) systems which simulate battlefields and used for battle experiments, analyses, military exercises, training, etc. AddSIM shall provide a standard simulation framework of the next Defense M&S systems. Therefore AddSIM shall satisfy not only functional but also quality requirements such as availability, modifiability, performance, testability, usability, and others. AddSIM consists of operating softwares of hierarchical components including graphical user interface, simulation engines, and support services(natural environment model, math utility, etc.), and separated weapon system models executable on the operating softwares. The relation between software architectures and their quality attributes are summarized from previous works. And the AddSIM architecture and its achievements in the aspect of quality attributes are reviewed.