Learn More
Graphene composites with metal or metal oxide nanoparticles have been extensively investigated owing to their potential applications in the fields of fuel cells, batteries, sensing, solar cells, and catalysis. Among them, much research has focused on supercapacitor applications and have come close to realization. Composites include monometal oxides of(More)
Time difference of arrival (TDOA) estimation is one of the key techniques in array signal processing and has wide applications in hands-free speech interface. TDOA is used to derive the time difference of signal propagation from source to the spatially separated microphones. The acoustic transfer functions ratio (ATF-s ratio) method is one of the robust(More)
This paper presents a live-video service using multicast in wireless network. The switching/multicast agent (SMA) in this system provides multicast for effective use of network resources in WLAN and reduces the load of video server and access points(AP). Also, the SMA and AP support a handover mechanism for moving mobile nodes(MN) using identification(More)
A new application area using a very simple alkali metal chalcogenide, disodium diselenide (Na2Se2), has been developed. The prepared alkali metal chalcogenide (disodium diselenide, Na2Se2) acts as an anionic exchange precursor (PbS to PbS-PbSe), a Se precursor for metal selenide nanoparticles (Ag to Ag2Se), and a MCC (FeO-MCC) depending on the type of(More)
It is well known that exercise is indispensable in the course of rehabilitation for damaged bones, joints, and muscles. The damaged parts are treated with surgery and/or medicine then exercise is prescribed to recover normal function. Though various exercise machines, which control the force and speed of the exercise, are used for reliable exercise, they(More)
A new construction method using robots is spreading widely among construction sites in order to overcome labour shortages and frequent construction accidents. Along with economical efficiency, safety is a very important factor for evaluating the use of construction robots in construction sites. However, the quantitative evaluation of safety is difficult(More)
This study presents a virtual environment with a robot system for multi-joint rehabilitation exercise. This is a new application in the field of rehabilitation medicine and reflects the current trend of using robots in service fields. It is well known that exercise is indispensable for rehabilitation for damaged bones, joints, and muscles. The damaged parts(More)