KICTEC Inc.

Fukushima-shi, Japan

KICTEC Inc.

Fukushima-shi, Japan
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Nagahama H.,Tokushima University | Inagaki T.,Chiba University | Ikeda N.,KICTEC Inc. | Takahashi K.,KICTEC Inc. | And 6 more authors.
Advances in Intelligent Systems and Computing | Year: 2017

Crossing crosswalks is one of the most dangerous situations for visually impaired persons. Crosswalk entrances are located on the boundary with the roadway and are among the most dangerous areas for visually-impaired persons. Tactile walking surface indicators (TWSIs) are installed on the road to support independent travel for blind and low-vision individuals. We developed an LED block equipped with projections to strengthen the support of the crosswalk entrance. The blind person can sense this block through the soles of the shoes. A low-vision person can find it through the use of residual vision. Blind and visually impaired persons found that the LED block equipped with projections to locate the travel direction effectively supported crossing. The effectiveness of this block is described based on measurements and questionnaire results. © Springer International Publishing Switzerland 2017.


Inagaki T.,Nihon University | Fujisawa S.,Tokushima University | Takahashi K.,NPO Growing Peoples Will | Ikeda N.,KICTEC Inc. | And 3 more authors.
IATSS Research | Year: 2016

For people with visual impairments who face difficulties when crossing the road, in urban areas of Japan the infrastructure designed to provide an indication of crossing direction and the curbstones at sidewalk-roadway boundaries often varies in reliability from one crossing to another. If anything, this promotes stress for users and is an issue for which improvement is urgently needed. The authors have proposed new orientation blocks to be installed at crosswalk entrances as a means of more accurately indicating to people with visual impairments the trajectory to follow when crossing the road, and in prior research have derived desirable specifications for the profile of these blocks and their position relative to tactile walking surface indicators (TWSI).For this paper, in order to examine in greater detail the desirable position of orientation blocks relative to TWSI, the authors conducted an experiment using totally blind subjects to evaluate conditions on a 10. m walk that simulated an actual crossing. The results, based on observations of the trajectories walked by participants in the experiment and interviews eliciting their subjective evaluations, showed that separating orientation blocks and blister tactile blocks by about 8-12. cm is effective in constraining lateral deviation at a point 5. m from the start of crossing and that an 8. cm separation was desirable in order to maintain an effective reduction of mental stress while crossing. © 2016.


Inagaki T.,Chiba University | Nagahama H.,Tokushima University | Ikeda N.,KICTEC Inc. | Takahashi K.,General Support Co. for the Visually Impaired | And 5 more authors.
Advances in Intelligent Systems and Computing | Year: 2018

A crosswalk entrance is on the boundary of a roadway and is a dangerous area for visually impaired persons. Tactile walking surface indicators (TWSIs) are installed on the road to support independent travel for blind and low-vision individuals. We developed an LED block equipped with projections to strengthen support at the crosswalk entrance. Blind individuals can sense thiss block through the soles of their shoes. Results indicated that the LED block equipped with projections to locate travel direction effectively supports crossing. The effectiveness of this block is determined using measurement and questionnaire results. © Springer International Publishing AG 2018.


Okada T.,Tokushima University | Miyamoto T.,Tokushima University | Ito S.-I.,Tokushima University | Sato K.,Tokushima University | And 3 more authors.
Advances in Intelligent Systems and Computing | Year: 2018

Of the five human senses, vision is said to account for 80% of the information acquired. The presentation of light is an effective way to convey visual information. A blinking presentation especially attracts attention. A lowvision person acquires peripheral information through residual vision. In this case, light effectively supports the travel of low-vision persons. A blinking light stimulates more than a continuous light. However, a blinking light is not sufficiently compatible with the surrounding environment. This research investigates an environmentally friendly blinking pattern to arouse attention. © Springer International Publishing AG 2018.


Ogawa H.,Meijo University | Kan A.,Meijo University | Ikeda N.,KICTEC Inc. | Fujita A.,Meijo University
Physica B: Condensed Matter | Year: 2012

The effect of In doping on the electroluminescence (EL) properties of Zn 2SiO 4:In thin films was investigated. In-doped Zn 2SiO 4 thin films were deposited on BaTiO 3 substrates and their EL properties were characterized in this study. X-ray powder diffraction patterns of In-doped Zn 2SiO 4 powders revealed a single phase of Zn 2SiO 4 for In concentrations up to approximately 1.5 mol%, whereas a secondary phase of In 2O 3 was observed for In concentrations in the range of 2-10 mol%. The maximum luminance of thin film electroluminescent (TFEL) devices varied significantly with the amount of In doping. The highest luminance with blue emission was obtained when 2 mol% In was doped. The blue emission of In-doped Zn 2SiO 4 thin film may be related to the In substitution for Zn. The 2 mol% In-doped Zn 2SiO 4 thin film exhibited blue emission with CIE color coordinates of x=0.208 and y=0.086. © 2012 Elsevier B.V.


Tagawa A.,Japan Atomic Energy Agency | Tezuka M.,Japan Atomic Energy Agency | Terakura Y.,KICTEC Inc. | Naitou M.,KICTEC Inc. | Miyazima K.,KICTEC Inc.
International Conference on Nuclear Engineering, Proceedings, ICONE | Year: 2013

It is one of the most urgent issues to remediate the nuclear power plants contaminated by radioactive materials discharged following the accident at the TEPCO's Fukushima Daiichi NPS. Concrete walls of nuclear power plants in Japan are coated an epoxy resin coating for easily performing decontamination. We experimented a cutting test in Fugen Decommissioning Engineering Center using maximum 280MPa pressure and 30L/min water quantity, ultra-high pressure water jet system and 40m3/min air quantity vacuum system. We are conducting a study of decontamination technology in environmental pollution using this decontamination system. This decontamination system has achieved a decontamination factor 10 to 100. In environment experiments, we achieved more than 10 decontamination factor in water pressure of more than 150MPa. Thus, we have confirmed the change in a cutting ability by changing parameters. Parameters are the water pressure, the water quantity and air quantity. The impact force for water jet is a function that contains the test parameters. We have considered it using this function. The results of the test showed that there is a correlation between the impact force for water jet and a cutting capability. This decontamination technology can decontaminate radioactive material of the surface adhesion contamination and reduce the amount of waste generated for a thin cutting. In addition, we have experimented that the water can be recycled by chemical precipitation. After we experimented flocculation test using aluminum sulfate and zeolite flocculant, we have confirmed that it. can clean water up to the level of suspended solids 5mg/L, in turbid water using zeolite flocculant. This suspended solids concentration can be passed to the water processing system in nuclear power plant. From the test results, we found that ultra-high pressure water jet decontamination technology has a possibility that it can be used for decontamination of Fukushima Daiichi nuclear power plant. Copyright © 2013 by ASME.


Ikeda N.,KICTEC Inc. | Takahashi K.,General Support Center for the Visually Handicapped | Yamamoto G.,KICTEC Inc. | Kimura Y.,KICTEC Inc. | And 3 more authors.
Assistive Technology Research Series | Year: 2013

A person with low visual capacity's eyesight might decrease remarkably under low-light conditions such as the morning, evening, and nighttime, decreasing their opportunities to go out. Research and development underway to ensure safe walking for visually impaired persons examined a walking guidance system in which LED blocks are embedded into the road at edges of warning blocks installed at crosswalk entrances. The LED block used in the experiment is 120mm wide and 300mm long. The LED block is a flat-topped bar made from transparent acrylic fiber. The solar panel and LED are embedded in the ground. The LED block is set adjacent to the warning block at crosswalk entrances. The LED block can be detected with the visually impaired person's residual vision. Blind persons can also detect this block through the soles of their shoes. The detectability of this LED block was evaluated by subjective experiments performed by visually impaired and blind persons. The function of the temporary stop can be strengthened in the sight or the sense of touch. Installing LED blocks at crosswalk entrances was found to be useful for guiding visually impaired persons. © 2013 The authors and IOS Press. All rights reserved.


Ikeda N.,KICTEC Inc. | Takahashi K.,General Support Co. for the Visually Impaired | Inagaki T.,Nihon University | Sato K.,Tokushima University | And 5 more authors.
Studies in Health Technology and Informatics | Year: 2015

According to the WHO, about 80% of visually impaired persons in the world are with low visual capacity. It is considered that LVs' safe independent mobility will be improved as employing Tactile Walking Surface Indicators (TWSIs). In the night, guidelines for constructing warning blocks, a kind of tactile surface indicator, have not been well established. Therefore, crossing crosswalks is one of the most dangerous situations for visually impaired persons. We thus developed novel LED blocks that indicate crosswalk boundaries between sidewalks and roadways. This study addresses the LED blocks under various environmental illuminations and illumination from the opposite side of the crossing. © 2015 The authors and IOS Press. All rights reserved.


Omori K.,Hyogo Institute of Assistive Technology | Yanagihara T.,Kinki University | Kitagawa H.,Hyogo Institute of Assistive Technology | Ikeda N.,KICTEC Inc.
Studies in Health Technology and Informatics | Year: 2015

Some people with low vision or elderly persons tend to walk while watching a nearby floor, therefore, they often overlook or hard to read suspended signs. In this study, we propose two kinds of voice guides, and an experiment is conducted by participants with low vision using these voice guides and graphic floor signs in order to investigate effectiveness of these combinations. In clock position method (CP), each direction of near facilities are described in using an analogy of a 12-hour clock. Meanwhile, in numbering method (NU), near facilities are put the number in clockwise order, however, each direction are only illustrated in a crossing sign. As a result of an experiment, it is showed that both voice guides are effective for pedestrians with low vision. NU is used as a complement of graphic floor signs. Meanwhile, CP is used independently with graphic floor signs, however, there is a risk in the case of using in the environment where pedestrians are easy to mistake the reference direction defined by the sounding speaker. © 2015 The authors and IOS Press. All rights reserved.

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