A5108543995- Gaze Tracking and Assistive Technology
- Photonic Crystal and Fiber Optics
- Muscle activation and electromyography studies
- Hand Gesture Recognition Systems
- EEG and Brain-Computer Interfaces
- Advanced Fiber Laser Technologies
- Spatial Neglect and Hemispheric Dysfunction
- Advancements in Semiconductor Devices and Circuit Design
- Analog and Mixed-Signal Circuit Design
- Robotics and Automated Systems
- Stroke Rehabilitation and Recovery
- Advanced Fiber Optic Sensors
- Sensor Technology and Measurement Systems
- Semiconductor Quantum Structures and Devices
- Magnetic Field Sensors Techniques
- Advanced Electrical Measurement Techniques
- Tactile and Sensory Interactions
- Optical Network Technologies
- Assistive Technology in Communication and Mobility
- Robotic Locomotion and Control
- Teleoperation and Haptic Systems
- Robotic Mechanisms and Dynamics
- Engineering Applied Research
- Electric Motor Design and Analysis
- Augmented Reality Applications
University of the Ryukyus
2013-2025
University of the Ryukyus University Hospital
2009-2024
Old Dominion University
2009
Tohoku University
1995
Japan Society
1995
Diabetic retinopathy is one of the most significant retinal diseases that can lead to blindness. As a result, it critical receive prompt diagnosis disease. Manual screening result in misdiagnosis due human error and limited capability. In such cases, using deep learning-based automated disease could aid early detection treatment. analysis, original segmented blood vessels are typically used for diagnosis. However, still unclear which approach superior. this study, comparison two learning...
Effective utilization of renewable energies such as wind energy a replacement for fossil fuels is highly desirable. Wind not constant and generator output proportional to the cube speed, which causes power turbine generators (WTGs) fluctuate. In order reduce fluctuations farms, this paper presents an leveling control strategy farms based on both mean standard deviation farm power, cooperative WTGs, pitch angle method using generalized predictive controller (GPC) intended all operating...
Abstract Conventionally, the adaptive body area for prism adaptation (PA) has been limited to visible of glasses, especially unilateral upper limbs. In this study, we developed a virtual reality system that extends PA's area. This sets target and introduces symbolic representation position realize head task. As result, develped generates PA not individual parts but collection multiple motor units. Furthermore, experimental results in healthy subjects showed task could generate trunk (The is...
This paper presents a medical training system using augmented reality, AR. Recognizing an AR marker through Web camera, computer generated images appear on real space. We prepared 3D (three-dimensional) anatomical objects to show, and evaluated our platform. From the experimental result, we found that could overlay digital information operator's surrounding world appropriately.
In this paper, design of a mobile robotic arm for people with severe disabilities is implemented. This system composed arm, microcontroller, and its controller. The main body the can be contained in briefcase to carry laptop computer. Its weight 5 kg, including two 12-V lead acid rechargeable batteries. also mounted on wheelchair. To verify performance system, some tasks, such as drinking tea task eating were experimentally performed by an able-bodied subject. From experimental results, it...
This paper presents a user interface of 3D (three-dimensional) object converted from CT data in DICOM format using Leap Motion device that can be used as medical training system for students and interns. The formed controlled development environment such Unity. consists device, desktop computer the displaying software environment. experimental results show we have desirable control over rendered object.
This paper describes a self-feeding assistive robotic arm for people with severe disabilities. In order to obtain human-like movements during meals, we made and tested 7-DoF (degree of freedom). A simulator was also used motions the real arm. Using system, performed two experiments: (1) task transfer water from bowl other (2) eat foods. It is found experimental results that system can more than 80 % food respective positions.
Abstract Individuals who are suffering from the most severe of motor disabilities can improve their quality life by controlling and directing mechanical electronic devices. As for Spinal Cord Injured (SCI) patients', attempted hand movements be classified using electroencephalography (EEG). The research aims to develop a hybrid CNN‐LSTM (Convolutional Neural Network—Long Short Term Memory) architecture multichannel EEG signal classification. It is challenging task classify real‐world data...
In recent years, there have been problems such as exhaustion of fossil fuels, e. g., coal and oil, environmental pollution resulting from consumption. Effective utilization renewable energies wind energy is expected instead the fuel. Wind not constant windmill output proportional to cube speed, which cause generated power turbine generators (WTGs) fluctuate. order reduce fluctuating components, a method control pitch angle blades windmill. this paper, leveling generator by using an adaptive...
In optical coherence tomography (OCT) system, high numerical aperture (NA) PCF is required for collecting back scattering light detailed information from body tissue. this paper, we propose a new structure of NA zero dispersion single mode photonic crystal fiber (PCF) OCT at 0.83 μm, 1.06 μm and 1.31 wavelengths which are used ophthalmology, dermatology dentistry, respectively. The properties the proposed simulated by using finite difference method (FDM) with an anisotropic perfectly matched...
This paper presents a vision-based assistive robotic arm for people with severe disabilities. system is composed of arm, microcontroller, its controller, and unit. The main body the that can be contained in briefcase about 5 kg, including two 12-V lead acid rechargeable batteries. also capable being mounted on wheelchair. To obtain position coordinates an object, image processing technique single Web camera was used. Position errors order few millimeters were observed experiment....
Design of a video-based user interface using image processing for people with disabilities the fingers, such as rheumatism and osteoarthritis, is implemented in this paper. This simply composed CCD camera PC, allows users to manipulate PC small movements single finger. The finger appropriately detected images from techniques. Control boxes pointing character input functions are also made. To verify usability interface, some tasks clicking, dragging, maze, experimentally performed by healthy...