• 한국정보시스템학회지:정보시스템연구
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• 제19권1호
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• pp.1-17
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• 2010

This paper proposes an updating policy of indoor moving object databases (IMODB) for location-based services. our method applies the Ka1man filter on the recently collected measured positions to estimate the moving object's position and velocity at the moment of the most recent measurement, and extrapolate the current position with the estimated position and velocity. If the distance between the extrapolated current position and the measured current position is within the threshold, in other words if they are close then we skip updating the IMODB. When the IMODB needs to know the moving object's position at a certain moment T, it applies the Kalman filter on the series of the measurements received before T and extrapolates the position at T with the estimations obtained by the Kalman filter. In order to verify the efficiency of our updating method, we performed the experiments of applying our method on the series of measured positions obtained by applying the fingerprinting indoor positioning method while we are actually walking through the test bed. In the analysis of the test results, we estimated the communication saving rate of our method and the error increment rate caused by the communication saving.

• 한국전문물리치료학회지
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• 제10권1호
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• pp.1-13
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• 2003

The purpose of the study was to determine if there was a difference in the Functional Ambulation Performance score of senior adults with or without a history of falls during walking at a preferred velocity. Twelve subjects with a history of falling (mean age=73.8) and eight subjects with no history of falling (mean age=70.4) participated in the study. Temporal and spatial parameters of gait were analyzed using the computerized GAITRite system. The GAITRite system integrates specific components of locomotion to provide a single, numerical representation of gait, the Functional Ambulation Performance score. The Functional Ambulation Performance score is a Quantitative means of assessing gait based on specific temporal and spatial parameters. Statistical analysis of the two groups demonstrated a significant decrease in Functional Ambulation Performance score for those with a history of falls. They had lower values for step/extremity ratios, mean normalized velocity, and greater values for step times, percent in double support. These results indicate that the GAITRite system can be useful in detecting footfall patterns and selected time and distance measurements of persons with a history of falls and the Functional Ambulation Performance score can be used as indicators of gait performance for senior adults with a history of falls.

• 근관절건강학회지
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• 제23권3호
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• pp.139-151
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• 2016

Purpose: The study was conducted to examine the effects of motivational interviewing intervention on exercise performance and maintenance, exercise and pain self-efficacy, functional status, and quality of life in the patients with total knee replacement. Methods: This study used a nonequivalent control group non-synchronized design. A total of 100 patients with total knee replacement (33 patients in motivational interviewing group (MG), 33 patients in exercise group (EG), 34 patients in comparison group (CG)) were participated in this study. MG and EG had 7 scheduled sessions for 4 weeks. Data were analyzed with repeated measures ANOVAs by using IBM SPSS Statistics 20. Results: MG showed better exercise maintenance, higher exercise and pain self-efficacy, higher muscle strength, and mental component of quality of life than the other groups. MG and EG showed better knee flexion, less knee extension, longer walking distance for 6 minutes, and better functioning than CG. Conclusion: The results showed that motivational interviewing intervention is an effective intervention for elderly patients with total knee replacement. Future study examining long term effects of motivation interviewing intervention is necessary.

• 대한간호학회지
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• 제31권2호
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• pp.257-267
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• 2001

It is known that a pulmonary rehabilitation program improves dyspnea and exercise tolerence in patients with chronic obstructive pulmonary disease. However, it is also known that although it does not improve pulmonary function. This study was performed to evaluate the effect of a 4 week pulmonary rehabilitation on pulmonary function, gas exchange, and exercise tolerance in patients with chronic obstructive pulmonary disease. The pulmonary rehabilitation programs included breathing exercises, such as pursed-lip breathing and diaphragmatic breathing, upper-limb exercises, and inspiratory muscle training. These activities were performed for 4 weeks in twenty one patients with chronic obstructive pulmonary disease. Pre and post-rehabilitation pulmonary function and exercise capacities were compared after the 4 week period. Results are as follows: 1) Before the rehabilitation, the predicted value of FVC and FEV1 of the patients were 70.3$\pm$16.7% and 41.1$\pm$11.9% respectively. These pulmonary functions did not change after pulmonary rehabilitation. 2) Aloility of walking a 6 minute distance (325.29$\pm$122.24 vs 363.03$\pm$120.01 p=.01) and dyspnea (p=.00) were significantly improved after rehabilitation. Thus showing that pulmonary rehabilitation for 4 weeks can improve exercise performance and dyspnea in patients with chronic obstructive pulmonary disease.

• 척추신경추나의학회지
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• 제1권2호
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• pp.1-9
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• 2006

The purpose of this report is to investigate the clinical application of conservative treatment to a patient who has the low back pain and radiational pain. In this case, a female patient, 67 years old, who had low back pain and radiational pain on the right leg. We treated the patient with conservative treatment (acupuncture, herbal medicine, moxibustion) and chuna traction. In result, the in-patient's pain has decreased and walking distance has increased from 10m to 300m for 27 days. In conclusion, conservative treatment and chuna traction could be effective methods to treat the patient who has low back pain and radiational pain.

• 한국운동역학회지
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• 제24권3호
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• pp.249-258
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• 2014

The purpose of this study was to investigate the different patterns of the lower limb between elderly and adult females to reduce the rate of falls. Ten old females(age: $73.1{\pm}2.69yrs$, height: $151.9{\pm}4.82cm$, mass: $57.36{\pm}5.36$) and ten adult females(age: $28\pm}4.76$ yrs, height: $160.6{\pm}6.83cm$, mass: $53.9{\pm}8.44$) were participated in this experiment. The gait motions were captured with Qualisys system and variables were calculated with Visual-3D. The following results were found. The elderly female group showed bigger inclination angle between COM and COP than the adult female group so that the dynamic stability was reduced in walking for the compensation with a bigger stride width. The elderly female group ensure for the necessary forward movement of COM in order to replace the decreased function of ankle and knee joint. If the distance between COM and COP is closer and the energy reduction of a specific joint is reduced, they could prevent the elderly female's falling rate by strengthening of muscles which were related the extension of ankle joint.

• The Journal of Korean Physical Therapy
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• 제27권2호
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• pp.112-117
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• 2015

Purpose: The purpose of this study was to examine the effects of a task-specific obstacle crossing rehabilitation program on functional gait ability in patients with cerebellar ataxia. Overall, we sought to provide ataxia-specific locomotor rehabilitation guidelines for use in clinical practice based on quantitative evidence using relevant analysis of gait kinematics including valid clinical tests. Methods: Patients with cerebellar disease (n=13) participated in obstacle crossing training focusing on maintenance of dynamic balance and posture, stable transferring of body weight, and production of coordinated limb movements for 8 weeks, 2 times per week, 90 minutes per session. Throughout the training of body weight transfer, the instructions emphasized conscious perception and control of the center of body stability, trunk and limb alignment, and stepping kinematics during the practice of each walking phase. Results: According to the results, compared with pre-training data, foot clearance, pre-&post-obstacle distance, delay time, and total obstacle crossing time were increased after intervention. In addition, body COM measures indicated that body sway and movement variability, therefore posture stability during obstacle crossing, showed improvement after training. Based on these results, body sway was reduced and stepping pattern became more consistent during obstacle crossing gait after participation in patients with cerebellar ataxia. Conclusion: Findings of this study suggest that task-relevant obstacle crossing training may have a beneficial effect on recovery of functional gait ability in patients with cerebellar disease.

• 사상체질의학회지
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• 제28권3호
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• pp.300-308
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• 2016

Objectives This case study was about a Taeyangin patient with Amyotrophic Lateral Sclerosis identified as Hae-Yeok pattern. In this study, we report the significant improvement of extremity weakness of this patient after Sasang Constitutional medicine treatment.Methods The patient was identified as Taeyangin Hae-Yeok pattern and treated with Ogapijangchuk-tang and acupuncture. Korean-Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (K-ALSFRS-R) was used to assess the overall function of the patient. And the Global Assessment Scale (GAS) was used to assess the change of upper and lower extremities weakness after the treatment.Result and Conclusion The K-ALSFRS-R total score decreased from 30 points to 26 points and extremity weakness showed significant improvement in GAS after 12 days treatment. Furthermore, walking distance was much longer after treatment. In conclusion, this study shows that Sasang constitutional medicine can be effective treatment for Taeyangin patient with Amyotrophic Lateral Sclerosis.

• 대한임베디드공학회논문지
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• 제9권3호
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• pp.151-156
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• 2014

In this paper, we propose a position estimation method of an entertainment robot in a performance stage. A position information is needed to produce contents of an entertainment robot performance. First, the performance stage is realized by a CD (cadmium sulfide) sensor matrix with a constant distance. Then the proposed position estimation uses ON/OFF information of a CD sensor in a performance stage. We confirmed that the position of the robot is detected with an maximum 4cm in position evaluation experiments. The robot was traveling to the final target position in the walking experiment with 75cm and 120cm path plan. Ultimately, the effectiveness of the proposed estimation is assessed by experimental results of a robot in performance stage. Also, in the proposed system installed by a robot performance contents, there is no necessity to mount a position estimation device on a robot; therefore an advantage of our system is that an entertainment robot commercialized by robot vendor can be utilized in our performance stage directly.

• 제어로봇시스템학회논문지
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• 제8권11호
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• pp.954-962
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• 2002

In a park or street, we can see many people jogging or walking with their dogs tracking their masters. In this study, an entertainment robot that imitates a dog's behavior is created. The robot's task is tracking a moving target that is recognized as the master. In order to design the robot, the ecological approach. in which the robot's goals and surroundings heavily influence its design, is used. A three-wheel type locomotion system is designed as the robot's physical structure which can follow a human jogging in outdoor space like a park. A sensor system which can detect the position of a master for the robot in the outdoor space, is developed. This sensor system consists of a signal transmitter which is at the hand of a master and some sensors which are mounted on the robot. The transmitter emits RF(radio frequency) and ultrasonic signals and the sensors detect the direction and distance from the robot to the transmitter by using the received signals. For the control architecture of the robot, a purely reactive behavior-based method is used in order to increase speed of response. The developed robot is evaluated through experiments conducted in indoor and outdoor environments.