[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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For people with disabilities or walking difficulties in the limbs or trunk that interfere with driving a vehicle, the Japanese Road Traffic Law requires the installation of auxiliary equipment according to the degree of the disability. However, it is difficult to completely complement the disability because it is installed a vehicle designed to be driven by a person without a disability. This study aimed to develop the design of the seat and the grip of the manual driving device that can support the posture of the upper body when driving a vehicle under difficult driving conditions. There are two features in the design of the driving postural support tools. On the driver’s seat the driving posture is supported by the support tool protecting the rolling of the upper body and even occurrence of the unbalanced posture from driving a curve or similar situation. The other feature is the stability of the upper body as well as the thighs and low-back area in which the seat surface is designed to support the thighs outward, and likewise, by supporting inward from the outer wall of the seat with a triangular-shaped protrusion on the front edge of the seat. In addition, the grip portion was designed to allow the driver to grasp the manual driving device with the remaining palm grip capacity even if the driver is not able to fully grasp it.

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[in Japanese]

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[in Japanese]

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A fiber-reinforced polymer material often uses a thermosetting polymer material as a matrix, but the use of a thermoplastic polymer material could widen the use of fiber-reinforced polymer material into various fields because of its higher moldability. This paper has two aims: 1) to investigate the interfacial properties of the fiber and the matrix for exploring better physical properties; and 2) to summarize the influence of the properties on the interfacial adhesive strength. In this study, the deformation behavior near the glass fiber / polypropylene interface was observed. First, as a development of a test piece manufacturing device, a vacuum forming device was prototyped. Next, fiber reinforced plastic (FRP) was manufactured to investigate the relationship between the molding of spherulites and transcrystalline layers and the molding conditions. The results showed that the transcrystalline layer could be formed by applying a shearing force to the fibers at the crystallization temperature after melting at a high temperature. Using the test pieces manufactured by the device, a tensile experiment of spherulite and transcrystalline was carried out, and it was found that the formation of the transcrystalline layer enhanced the interfacial adhesive strength.

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Luxembourg is expanding public transportation networks as a measure against road congestion and air pollution associated with economic and population growth. As part of this, in 2017, a hybrid tram system with catenary-free technology has been reintroduced, which can be integrated into the historic district registered as a World Heritage Site. The hybrid system with on-board batteries allows the tram to operate 3.6km of catenary-free section by charging the batteries during operation on catenary sections and boarding at stations on catenary-free section. Similar technologies researched and developed by Japanese companies and institutions are still in test stage. Possible reasons for the delay for social implementation could be lower awareness on landscape protection, existence of numerous utility poles and overhead power lines, and pursuit of excessive quality for the hybrid system. Flexible and practical adoption of novel technologies is required to make a better society.

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In this paper, we proposed a method to automatically perform “inspection of control flow” of a computer program at runtime. “Inspection of control flow” is an inspection of whether the commands of the program under inspection are executed in the intended order. This inspection system targets programs that are written in assembler language and whose command execution order is determined based on input data. Normally, the program to be executed is an object program written in machine language. However, it is difficult to directly handle the machine language expressed in binary numbers. Therefore, the assembler language that has a one-to-one correspondence with the machine language and is expressed by alphanumeric characters and symbols is used for this paper. The proposed system used a learning system to automatically increase the amount of text information. The performance of this system was compared to a conventional inspection method from the input/output relationship. The proposed system detected 80% of the errors detected by the input / output relationship method.

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