• KIISE Transactions on Computing Practices
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• v.22 no.11
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• pp.591-600
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• 2016

Computing technologies are increasingly applied to most casual human environment networks, as computing technologies are further developed. In addition, the rapidly increasing interest in IoT has led to the wide acceptance of speech recognition as a means of HCI. In this study, we present a novel method for recognizing the Korean vowel 'ㅜ', as a part of a phoneme based Korean speech recognition system. The proposed method involves analyses of bulk indicators calculated in the time domain instead of analysis in the frequency domain, with consequent reduction in the computational cost. Four elementary algorithms for detecting typical waveform patterns of 'ㅜ' using bulk indicators are presented and combined to make final decisions. The experimental results show that the proposed method can achieve 90.1% recognition accuracy, and recognition speed of 0.68 msec per syllable.

• Journal of The Korean Society of Integrative Medicine
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• v.1 no.4
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• pp.15-24
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• 2013

Purpose : The purpose of this pilot study was to examine the effects of task-oriented training program on balance, activities of daily living(ADL) performance, and self-efficacy in stroke patients. Method : Two subjects with stroke in experimental group participated in the task-oriented training program, while two subjects with stroke in control group received traditional rehabilitation therapy for 4 weeks, 30 minutes per session, four times per week. The task-oriented training program consisted of four tasks with 4 difficulty levels. In two groups, balance was examined with using the Berg Balance Scale(BBS), ADL performance was examined with using the Modified Barthel Index(MBI), and Self Efficacy was evaluated with using the Self-Efficacy scale(SES) before and after 4-week training. Result : After 4 weeks training, all scores of measurement variables increased in both the experimental group and the control group, but the average rates of change differed between the two groups. After the training program, the scores of BBS, MBI, and SES in experimental group increased to 11.4%, 9.9%, 15.4%, respectively than pre-training. Conclusion : According to the results of this study, task-oriented training program might be proposed as a intervention to improve balance ability, ADL performance, and self-efficacy in stroke patients.

• Korean Journal of Applied Biomechanics
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• v.19 no.2
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• pp.257-264
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• 2009

The purpose of this study was to investigate the lower extremity kinematics and muscle activities of adductor longus(AL), gluteus medius(GME), gluteus maximus(GMA), biceps femoris(BF), rectus femoris(RF), gastrocnemius(GA), and tibialis anterior(TA) using three dimensional and Noraxon 8 channels EMG system during turn 0, 60, 90 and 120 degrees in patients with Parkinson's disease. Seven parkinson's patients and five healthy subjects were participated in the study. Participants with Parkinson's disease demonstrated significant differences in reduction of stride length and stride width. Also, they showed ill difference in muscle activities. The strength and balance of the lower extremity muscles may help to improve cutting movement and to prevent falling in parkinson's patients.

• Journal of Korean Physical Therapy Science
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• v.18 no.4
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• pp.11-18
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• 2011

Purpose : This study attempts to assist stroke patients lead independent daily life movements by providing basic data for stroke patients' successful rehabilitation program and understanding the relationship between health beliefs of stroke patients and their guardians, and patients' rehabilitation performance level and daily life movement fulfillment ability. Methods : 23 stroke patients receiving treatments at rehabilitation specializing hospital after getting diagnosed with a stroke, along with 23 guardians were selected as research subjects, and health belief was measured by modifying supplementing Byun Young-Hee(2002)'s health belief measurement tool for leg movement disorder patients. Research findings revealed the following relationship between health beliefs of stroke patients and their guardians, and patients' rehabilitation performance and daily life movement fulfillment ability. Results : The patients group's initial MBI score was $33.13{\pm}3.46$, and measurement after four weeks was $38.43{\pm}3.47$. As health beliefs got stronger, MBI score increased significantly(p<.05). Correlation analyses of factors that affect rehabilitation attendance rate showed that perceived susceptibility, seriousness and usefulness were statistically significant, and perceived disability was not statistically significant(p<.05). Guardians' health belief index(susceptibility, seriousness, usefulness, disability) had no correlation with rehabilitation attendance rate. Conclusion : In order to increase daily life movement fulfillment ability of patients who are being treated with stroke, health beliefs must be raised to increase changes in daily life movement fulfillment ability. Therefore, it is believed that managing programs that can increase health beliefs of stroke patients can allow patients obtain positive health beliefs, further increase rehabilitation performance rate of stroke patients as well as independent daily life ability.

• Journal of Digital Contents Society
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• v.13 no.2
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• pp.235-245
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• 2012

This paper introduce a quiz game contents based on gesture interface. We analyzed the off-line quiz games, extracted its presiding components, and digitalized them so that the proposed game contents is able to substitute for the off-line quiz games. We used the Kinect camera to obtain the depth images and performed the preprocessing including vertical human segmentation, head detection and tracking and hand detection, and gesture recognition for hand-up, hand vertical movement, fist shape, pass and fist-and-attraction. Especially, we defined the interface gestures designed as a metaphor for natural gestures in real world so that users are able to feel abstract concept of movement, selection and confirmation tangibly. Compared to our previous work, we added the card compensation process for completeness, improved the vertical hand movement and the fist shape recognition methods for the example selection and presented an organized test to measure the recognition performance. The implemented quiz application program was tested in real time and showed very satisfactory gesture recognition results.

• Journal of the Korean Society of Physical Medicine
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• v.9 no.2
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• pp.213-222
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• 2014

PURPOSE: This study was conducted to determine the effect of patient-selected, task-oriented training on activities of daily living, quality of life, and depression for stroke patients. METHODS: This study included 40 stroke subjects, randomly assigned to either an experimental group or a control group. Both the experimental group and the control group included 20 stroke patients. Patients from the experimental group selected and performed task-oriented training. In the exercise program, the patient chose two categories from six categories and trained for 30 minutes a day, three times a week, for four weeks. Patients from the control group performed conventional task-oriented training. Outcomes were measured using the Korean version of a modified Barthel Index (K-MBI), the Korean Instrumental Activities of Daily Living (K-IADL), the Stroke-specific Quality of Life (SS-QOL), the Short Form 8 (SF-8), and the Beck Depression Inventory (BDI), both before and after training. RESULTS: There were significant differences between the before- and after-intervention data of the K-MBI and the K-IADL (p<.05) for both groups. Also, there were more significant improvements in the experimental group compared to the control group (p<.05) for the SS-QOL, SF-8 and BDI. CONCLUSION: The results of this study showed that patients-selected, task-oriented training had positive effects on stroke patients' activities of daily living, quality of life, and depression.

• Journal of the Korean Society of Physical Medicine
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• v.9 no.2
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• pp.171-179
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• 2014

PURPOSE: The objectives of this study were to investigate the effects of physical therapy provided at home on the motor function, activity of daily living (ADL), and level of pain in veterans men with disabilities, and to provide the information. METHODS: The participants were 108 patients men with disabilities living in the cities Seoul, Pusan, Daegu, Gwangju and Daejeon; they performed physical therapy at home-provided by physical therapy services- that included therapeutic exercise for 50 minute, 1~2 times a week for 24 weeks. The motor function was measured by using motor assessment scale (MAS) and ADL, the level of pain were recorded both before and after physical therapy. The data form both before and after physical therapy were analyzed by using the paired t-test. All statistical tests in this study were performed with the level of significance set at .05. RESULTS: After 24 weeks of physical therapy, we observed significant improvement in the MAS and ADL scale, as well as significant decrease in the level fo pain in the participants (p<.01). Significant improvement was also observed in the MAS and ADL scale, as well as a decrease in the level of pain among participants with stroke and spinal disease (p<.05). CONCLUSION: The findings of this study show that physical therapy provided at home can lead to an improvement in the motor function as well as improved ADL and pain control; physical therapy also has positive effects in relieving symptoms of veterans with disabilities.

• Journal of Preventive Medicine and Public Health
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• v.35 no.2
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• pp.107-115
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• 2002

Objectives : To evaluate the effects of a strengthening exercise program on the physical activity, activities of daily living(ADL), social behavior and functional performance of the elderly in a home for the aged. Methods : We administered a survey questionnaire that consisted of questions to establish general characteristics, health habits and status, physical activity, ADL, and social behavior. Additionally, a physical fitness and functional performance examination was peformed on subjects who were 65 years old or older. Study subjects numbered 33 in the experimental group and 35 in the control group. For intervention, we used a strengthening exercise program of the upper and lower limbs for 12 weeks(5 times/week) using dumbbells and lead-packed weights. Results : After the strengthening exercise program, the scores of physical activity and social behavior were significantly higher than the control group and the before exercise measurements. Moreover, the variables of functional performance were significantly higher than in the control group or the before exercise records. Conclusion : These results Indicate that a strengthening exercise program can improve the score of physical activity, ADL and social behavior, as well as decrease the time(sec) of functional performance of the elderly in a home for the aged.

• Journal of the Institute of Convergence Signal Processing
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• v.24 no.4
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• pp.213-220
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• 2023

Falling occurs unexpectedly during daily activities, causing many difficulties in life. The purpose of this study was to establish a system for fall detection of high-risk occupations and to verify their effectiveness by collecting data and applying it to predictive models. To this end, a wearable device was configured to detect fall by calculating acceleration signals and azimuths through acceleration sensors and gyro sensors. In addition, the study participants wore the device on their abdomen and measured necessary data from falls-related movements in the process of performing predetermined activities and transmitted it to the computer through a Bluetooth device present in the device. The collected data was processed through filtering, applied to fall detection prediction models based on deep learning algorithms which are 1D CNN, LSTM and CNN-LSTM, and evaluate the results.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.415-424
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• 2019

In this paper, a minimum rotation radius was designed and fabricated to overcome the threshold so that elderly or disabled people who have difficulty moving can move and transfer safely and conveniently in a narrow room. In the indoor environment, where the sedentary culture develops, this study aimed to provide convenience for passengers with fracture diseases, geriatric diseases, and other knee and waist diseases. First, links, seats, armrests, covers, motors, batteries, chargers, controllers, etc. were attached to the frame so that they could be moved and lifted indoors. The product design and structure were designed considering the user's environment and physical characteristics, and IoT functions were added. A driving experiment was performed to confirm the operating performance of the manufactured indoor moving and lifting wheelchair. The performance tests, such as continuous running time, turning radius, maximum actuator load, maximum lift height, sound pressure level, minimum sensing distance of the driving aid sensor, interworking of server and app programs, device compatibility, and duty cycle error rate, were performed. As a result of the test, the built-in wheelchair could achieve the performance test target of each item and operate successfully.