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To the Editor: Health care professionals have expressed concerns about the quality and veracity of information individuals receive from Internet-based sources. One area of controversy is the use of Internet sites to communicate information on immunization. YouTube is a video-sharing Internet Web site created in 2005 that provides free video streaming. It allows users to share multimedia clips t...

Deaf and hard of hearing sign language users are increasingly using sign language interpreter videos when obtaining information from television programs, films and web sites. These videos serve as a tool for interpreting spoken and/or written words. While previous studies have mainly emphasized the benefits of using captions in videos with non-signing content, our study focuses on the use of ca...

In this paper, we present an in-depth and systematic measurement study on the characteristics of YouTube videos. We crawled the YouTube site for a 3-month period in early 2007, and obtained more than 2 million distinct videos. This constitutes a significant portion of the entire YouTube video repository. Using this collection of datasets, we find that YouTube videos have noticeably different st...

This study values the broad range of web videos produced by businesses to introduce new technologies while also promoting their products. When the promoted technology is related to the topic taught in a school course, it may be beneficial for students to watch such videos. However, most students view the web as source for entertainment, and may have negative attitudes toward adopting these web ...

Educational videos have become an important part of higher education, providing an important content-delivery tool in many flipped, blended, and online classes. Effective use of video as an educational tool is enhanced when instructors consider three elements: how to manage cognitive load of the video; how to maximize student engagement with the video; and how to promote active learning from th...