Providing on-demand video streaming service over the Internet is a challenging task. In this paper, we propose DirectStream, a directory based peer-to-peer video streaming service that efficiently and cost-effectively provides video ondemand service with VCR operation support. We analytically and experimentally examine the system performance, and show that the proposed scheme can significantly ...

This paper analyzes a tree hierarchical network architecture employing video caching and multicasting capacity to support a broadband video service called TV-Anytime. The proxy servers are located close to customers and are able to store the most popular videos in an adaptive way. Due to a large uncertainty in the future demands for videos, we propose an on-line video replacement policy based o...

Approximately 10 video clips are posted every day on the web. The popularity of web-based video databases poses a number of challenges to machine vision scientists: how do we organize, index and search such large wealth of data? Content-based video search and classification have been proposed in the literature and applied successfully to analyzing movies, TV broadcasts and lab-made videos. We e...

A growing body of literature has emerged that focuses upon cognitive assessment of video game player experience. Given the growing popularity of video gaming and the increasing literature on cognitive aspects of video gamers, there is a growing need for novel approaches to assessment of the cognitive processes that occur while persons are immersed in video games. In this study, we assessed vari...

The popularity of laparoscopy to perform radical hysterectomy has massively increased over the last 2 decades. However, oncologic outcomes (overall and disease-free survival) have been found be better in patients managed by laparotomy compared with laparoscopy, challenging this surgical route. Compared laparotomy, vaginal access reduces postoperative morbidity, while avoiding potential cancer s...

With the recent popularity of smart phones and tablet computers, the usage of the mobile Internet continues to be dramatically expending. A survey [1] expects that the global mobile data traffic will grow at the annual rate of 66 percent from 2012 to 2017 and the video data traffic will account for 66 percent of the total amount of the mobile data. Concurrently, the network operators, such as A...

Video-capture virtual reality (VR) systems are gaining popularity as intervention tools. To date, these platforms offer visual and audio feedback but do not provide haptic feedback. We contend that adding haptic feedback may enhance the quality of intervention for various theoretical and empirical reasons. This study aims to integrate haptic-tactile feedback into a video capture system (GX VR),...

Driver sleepiness is a major contributor to severe crashes and fatalities on our roads. Many people continue to drive despite being aware of feeling tired. Prevention relies heavily on education campaigns as it is difficult to police driver sleepiness. The video sharing social media site YouTube is extremely popular, particularly with at risk driver demographics. Content and popularity of uploa...

The popularity of H.323 applications has been demonstrated by the billions of minutes of audio and video traffic seen on the Internet every month. Our objective in this paper is to obtain Good, Acceptable and Poor performance bounds for network metrics such as delay, jitter and loss for H.323 applications based on objective and subjective quality assessment of various audio and video streams. T...

Video-on-demand (VOD) is a service allowing customers to select video programs from a central server for viewing on a television or a computer screen. Traditional unicast VOD systems require huge amounts of the server network’s bandwidth, so near-VOD systems using broadcast protocols have been proposed to reduce the bandwidth requirement. Although NVOD systems can service many users with less n...