Reproduction de : Thèse doctorat : Eco-éthologie : Reims : 2007. / Titre provenant de l'écran titre. Bibliogr. p. 149-168.

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There has been in recent years a surge of interest about new software products that make it possible for libraries to offer assistance to online users via chat. Such software offers far more interactivity than instant messaging programs and allow for a richer experience for both librarian and user. Surveys chat reference services around the globe and analyzes trends in the provision of this new mode of assistance. Also presents discussion of why chat reference service is gathering attention as well as its limitations and drawbacks.

Since conventional audio-video teleconferencing systems have reached their limits, the needs of integrating new sensations to improve users' telecommunication experience are growing. Haptics, the sense of touch, which includes handshake, comforting hug, encouraging pat, and other physical contacts, is of great importance for interpersonal communication, since it allows people to express and receive intimate affection, intention or emotion efficiently. Motivated by a few haptic telecommunication softwares, this thesis presents an innovative webcam-based touchscreen to replace the haptic device, which is used in HugMe system as human hand, to further increase people's degree of immersion with the audio-video-haptic teleconferencing system at a more reasonable price. With our webcam-based touchscreen, the user could directly use his/her bare hand to touch the image of the person who he/she is chatting with, instead of controlling a haptic device as the medium to realize indirect touch. This thesis also gives details of the touchscreen method and our proposed mathematical models for touch position calculation. Experimental results show that our system is accurate and robust, while maintaining high compatibility with conventional audio-video teleconferencing systems for combination. With our haptic jacket, the passive user can feel the touch of the active user at the right position. Also, additional applications with the touchscreen, such as writing and drawing, are developed and tested. Finally, we draw the conclusions and talk about future work.

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

Since conventional audio-video teleconferencing systems have reached their limits, the needs of integrating new sensations to improve users' telecommunication experience are growing. Haptics, the sense of touch, which includes handshake, comforting hug, encouraging pat, and other physical contacts, is of great importance for interpersonal communication, since it allows people to express and receive intimate affection, intention or emotion efficiently. Motivated by a few haptic telecommunication softwares, this thesis presents an innovative webcam-based touchscreen to replace the haptic device, which is used in HugMe system as human hand, to further increase people's degree of immersion with the audio-video-haptic teleconferencing system at a more reasonable price. With our webcam-based touchscreen, the user could directly use his/her bare hand to touch the image of the person who he/she is chatting with, instead of controlling a haptic device as the medium to realize indirect touch. This thesis also gives details of the touchscreen method and our proposed mathematical models for touch position calculation. Experimental results show that our system is accurate and robust, while maintaining high compatibility with conventional audio-video teleconferencing systems for combination. With our haptic jacket, the passive user can feel the touch of the active user at the right position. Also, additional applications with the touchscreen, such as writing and drawing, are developed and tested. Finally, we draw the conclusions and talk about future work.

Reproduction de : Thèse d'exercice : Médecine vétérinaire : Toulouse 3 : 2008. / Titre provenant de l'écran titre. Bibliogr. p. 63-67.

Reproduction de : Thèse d'exercice : Médecine vétérinaire : Toulouse 3 : 2009. / Titre provenant de l'écran titre. Bibliogr. p. 109-117.

Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI/Dissertation Abstracts International.

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