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Various accessibility activities are improving blind access to the increasingly indispensable WWW. These approaches use various metrics to measure the Web's accessibility. “Ease of navigation” (navigability) is one of the crucial factors for blind usability, especially for complicated webpages used in portals and online shopping sites. However,(More)
Accessibility-related regulations and guidelines are contributing to the steady improvement of Web accessibility. There are various accessibility evaluation tools, and they also help Web authors make their pages compliant with guidelines. As a result, an increasing number of Web pages are compliant with the evaluation tools. These days, however, blind(More)
According to the guidelines for cardiopulmonary resuscitation (CPR), the rotation time for chest compression should be about 2 min. The quality of chest compressions is related to the physical fitness of the rescuer, but this was not considered when determining rotation time. The present study aimed to clarify associations between body weight and the(More)
Crowdsourcing for social goals (e.g., supporting public libraries or people with disabilities) is a promising area. However, little is known about how to develop active worker communities for such goals. First, we need reliable metrics for the workers' motivation. Second, the characteristics of senior crowd workers have rarely been studied, even though they(More)
Video captioning can increase the accessibility of information for people who are deaf or hard-of-hearing and benefit second language learners and reading-deficient students. We propose a caption editing system that harvests crowdsourced work for the useful task of video captioning. To make the task an engaging activity, its interface incorporates game-like(More)