Useful field of view for older people

Itoh, Noboru; Sagawa, Ken; Fukunaga, Yoshiki

doi:10.4017/gt.2008.07.02.069.00

Cited by 2 publications

(1 citation statement)

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“…Although both glassy alloys contain a small amount of Si which is effective to increase a peak internal friction [8,10,15], the latter glassy alloys contain Al. Effects of the Al addition on the local structure [18] and bonding states [19,20] of the binary Zr-TM (TM=Cu, Ni) glassy alloys have been recently clarified. The addition of ~10 at%Al highly changes their local structure and bonding states in the local structure.…”

Section: Resultsmentioning

confidence: 99%

Internal Friction and Mechanical Strength of Hydrogenated Ti-Rich Multicomponent Glassy Alloys

Hasegawa

Takeuchi

Nagata

et al. 2006

KEM

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The hydrogen-induced internal friction and mechanical strength of the Ti-rich Ti34Zr11Cu47Ni8 and (Ti34Zr11Cu47Ni8)98Si2 hydrogenated glassy alloys have been investigated. It is found that the tensile strength is more than 0.8 GPa at room temperature when the hydrogen content is below about 20 at% for both alloys. The frequency dependence of peak temperature of the hydrogen-induced internal friction of (Ti34Zr11Cu47Ni8)98Si2-17.3 at%H hydrogenated glassy alloys has been clarified. Activation energy and pre-exponential factor are estimated to be 0.35 eV and 1.3x10-12, respectively. Compared with these values with those of Zr40Cu49Al10Si1 hydrogenated glassy alloys which show an internal friction peak around 300 K at about 300 Hz, it is found that the activation energy is much smaller than that of the latter although the pre-exponential factor is almost the same. Considering their similar composition and different component (Al), it is suggested that the component Al of the latter glassy alloys is effective for the higher activation energy which results in the increase of the peak temperature.

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Section: Resultsmentioning

confidence: 99%

Internal Friction and Mechanical Strength of Hydrogenated Ti-Rich Multicomponent Glassy Alloys

Hasegawa

Takeuchi

Nagata

et al. 2006

KEM

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More than the Useful Field: Considering peripheral vision in driving

et al. 2017

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Applied research on driving and basic vision research have held similar views on central, fovea-based vision as the core of visual perception. In applied work, the concept of the Useful Field, as determined by the Useful Field of View (UFOV) test, divides vision between a "useful" region towards the center of the visual field, and the rest of the visual field. While compelling, this dichotomization is at odds with findings in vision science which demonstrate the capabilities of peripheral vision. In this paper, we examine driving research from this new perspective, and argue for the need for an updated understanding of how drivers acquire information about their operating environment using peripheral vision. The concept of the Useful Field and the UFOV test are not discarded; instead we discuss their strengths, limitations, and future directions. We discuss key findings from vision science on peripheral vision, and a theory that provides insights into its capabilities and limitations. This more complete basic science understanding of peripheral vision informs appropriate use of the UFOV and the Useful Field in driving research going forward.

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Useful field of view for older people

Cited by 2 publications

References 0 publications

Internal Friction and Mechanical Strength of Hydrogenated Ti-Rich Multicomponent Glassy Alloys

Internal Friction and Mechanical Strength of Hydrogenated Ti-Rich Multicomponent Glassy Alloys

More than the Useful Field: Considering peripheral vision in driving

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