• Journal of rehabilitation welfare engineering & assistive technology
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• v.7 no.1
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• pp.73-79
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• 2013

In this study, we present how our assistive technology service worked in the public funds delivery system through the center of professional assistive technology in Gwangju. In detail, among total 253 applicants for assistive device support business for disabled, 28 clients and 28 clients failed to get the support because of self-withdrawl and insuitability, respectively. The left 225 clients finally got the chance to use the assistive device; especially, 28 clients will get the alternative device which was recommended through the assistive technology professionals. Therefore, this work is believed to be a good example of how mediation of professionals in assistive technology center leads to the efficient use of public funds.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.3
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• pp.221-226
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• 2014

The purpose of this study is to suggest improvement directions and analysis of assistive technology service linkage on public benefits in local assistive technology center. The service steps and the main program parts of public benefits linkage in local assistive technology center was identified, and the present status of associated repair works and contact suppliers of assistive technology device in local community was investigated. The result showed the most common level of associated status to provide information of assistive technology devices in public benefits. All the centers provided repair service, and it was typically performed to light maintenance. The centers offered with associated professional repair service supplier for high maintenance service. The connection with assistive technology device supplier appeared a lot of regional difference. Henceforth, the centers will be required to distribute more various assistive technology devices, it is necessary upgrading the quality of information and interaction with the public benefits supporting organizations through its expansion, and it is need to ensure based on policy through the analysis of the effectiveness about linkage.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.9 no.1
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• pp.11-15
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• 2015

It is Korea Employment Agency for the Disabled that is facilities providing assistive technology services for supported employment since 2004's. This center have one central organization and 18 branch offices. The need of this service through satisfaction research of the demand is confirmed by precedent study Therefore foundation of assistive technology center for supported employment should be required by demand analysis because of improving professional and providing 'qualitative' services instead of 'quantitative' ones. So assistive technology center for supported employment can resolve a problem about various needs for increasing disabled population. Demand of establishing this center has been researched.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.11 no.2
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• pp.99-105
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• 2017

The purpose of this study was to compare AAC service delivery system between Korea and U.S.A for appling effective 'AAC service delivery system. This delivery system complement the missing part in system of the current method and narrow blind area for system. The result of this research, increase suppling item of assistive communication device in public benefit and provide delivery system through construct infrastructure by assistive technology center, special education support center, developmental disorder support center, speech therapy center in each local area. Furthermore, assistive technology-related institute and academy develope training programs for human resources to delivery AAC service.

• 재활복지
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• v.22 no.1
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• pp.115-139
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• 2018

The purpose of this study is to examine the awareness and demands from assistive technology professionals on the service and propose practical methods for AAC service. This study selected subjects who are experts working in 10 assistive technology centers and survey was conducted among 69 assistive technology professionals. Results from this study are presented as follows. First, many assistive technology professionals learned AAC through school course. Second, there was a significant difference in the presence of using AAC experience regarding their general awareness of the understanding and interests on AAC. Third, many responders said that it is significant to provide AAC information and extend supports for AAC users and providers. They added that demands of AAC will grow in the future and engineering-based ACC instruments will take up the most market. This study will enable AAC service to offer basic data to establish more efficient supportive direction for AAC users and providers of the assistive technology center.

• The Journal of Korea Robotics Society
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• v.8 no.1
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• pp.8-19
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• 2013

One of the important issues for structural and electrical specifications in developing a robot is to determine lengths of links and motor specifications, which need to be appropriate to the purpose of robot. These issues become more critical for a gait rehabilitation robot, since a patient wears the robot. Prior to developing an entire gait rehabilitation robot, designing of a 1DOF assistive knee joint of the robot is considered in this paper. Human gait motions were used to determine an allowable range of knee joint that was rotated with a linear type actuator (ball-screw type) and links. The lengths of each link were determined by using an optimization process, minimizing the stroke of actuator and the total energy (kinetic and potential energy). Kinetic analysis was performed in order to determine maximum rotational speed and maximum torque of the motor for tracking gait trajectory properly. The prototype of 1 DOF assistive knee joint was built and examined with a impedance controller.

• The Journal of Korea Robotics Society
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• v.10 no.3
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• pp.162-170
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• 2015

This paper describes the development of a hand module of NREX (National Rehabilitation Center Robotic Exoskeleton) designed to assist individuals with sustained neurological impairments such as stroke and spinal cord injuries. To construct a simple and lightweight hand module, the robotic hand adopts a mechanism driven by a motor and moved by two four-bar linkages. The motor facilitates the flexion-extension movements of the thumb and the other four fingers simultaneously. Thus, an individual using the robotic hand module can effectively grip and release objects related to daily life activities. The robotic hand module has been designed to cover the range of motion with respect to its link distance. This hand module can be used in therapeutic rehabilitation as well as for daily life assistance. In addition, this hand module can either be mounted on an NREX or used as a standalone module.

• Journal of radiological science and technology
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• v.43 no.6
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• pp.489-494
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• 2020

The Law method is observing the temporal bone. There are two types of methods: the double angle method, which manipulates the center ray angle of the tube twice, and the single angle method, which manipulates once. The purpose is to increase the reproducibility of the image by making vertical incidence by making an assistive device using a 3D printer. Two assistive devices with a wedge-shaped 8.5 × 10 × 2.3 cm, an inclined surface of 7.5 cm, and an inclination angle of 15° were fabricated. Assistive devices can be combined with each other in the form of grooves, and PLA (Poly Lactic Acid) is used as a material. In the first experiment, 10 examiners operated the tube 15° in the caudad direction and 15° in the anterior direction, and measured it with a protractor to conduct a reproducibility experiment. Second, two examiners acquired vertically incidence images using the existing law method and assistive devices, and measured the distance between each measurement point to evaluate the reproducibility. The tube center ray angle reproducibility experiment was not statistically significant, but the angle difference was up to 9° between examiners. The reproducibility experiment of radiographic images was not statistically significant with the conventional method, and the method using an assistive device was statistically significant. Therefore, regardless of skill level, an image capable of securing reproducibility, which is the advantage of vertical incidence, could be obtained.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.805-813
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• 2018

The research was conducted with the purpose of providing effective safety and quality control system for assistive products for handicapped those are used extensively. Assistive products couldn't be classified independently due to collision with the act of medical device and lack in legal basis. The issues about safety and quality have been solved by other legal frames on a case by case basis. We couldn't find any abroad case of independent safety and quality control policy. For the practical solution, this article suggested hybrid classification system mixed with existing policies. Each classified branches are allocated to the appropriate policy of safety and quality control so those are ease of understanding and prospect. And also a delicacy process was suggested not to leave off any assistive products. Through these suggests of the improvement it is expected that blind areas of safety and quality control for assistive products for handicapped could be solved and identity of assistive products could be established to provide product safety for handicapped and boost relevant industries.

• The Journal of Korea Robotics Society
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• v.14 no.4
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• pp.318-325
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• 2019

NREX, an upper limb exoskeleton robot, was developed at the National Rehabilitation Center to assist in the upper limb movements of subjects with weak muscular strength and control ability of the upper limbs, such as those with hemiplegia. For the free movement of the shoulder of the existing NREX, three passive joints were added, which improved its wearability. For the flexion/extension movement and internal/external rotation movement of the shoulder of the robot, the ball lock pin is used to fix or rotate the passive joint. The force and torque between a human and a robot were measured and analyzed in a reaching movement for four targets using a six-axis force/torque sensor for 20 able-bodied subjects. The addition of two passive joints to allow the user to rotate the shoulder can confirm that the average force of the upper limb must be 31.6% less and the torque must be 48.9% less to perform the movement related to the axis of rotation.