Chat rooms are of enormous interest to social network researchers as they are one of the most interactive internet areas. To understand the behaviour of users in a chat room, there have been studies on the analysis of the Response Waiting Time (RWT) based on traditional approaches of aggregating the network contacts. However, real social networks are dynamic and properties such as RWT change over time. Unfortunately, the traditional approach focuses only on static network and neglecting the temporal variation in RWT which may have lead to misrepresentation of the true nature of RWT. In order to determine the true nature of RWT, we analyse and compare the RWT of three online chat room logs (Walford, IRC and T-REX) putting into consideration the dynamic nature of RWT. Our research shows that the distribution of the RWT exhibits multi-scaling behaviour, which signi cantly a ects the current views on the nature of RWT. This is a shift from simple power-law distribution to a more complex pattern. The previous study on users RWT between pairs of people claims that the RWT has a power-law distribution with an exponent of 1. However, our research shows that multi-scaling behaviour and the exponent has a wider range of values which depend on the environment and time of day. The di erent exponents observed on di erent time scales suggest that the time context or environment has a signi cant in uence on users RWT. Furthermore, using the chat characterise, we predicted the factors which could minimize response waiting time and improving the friendship connection during online chat sessions. We apply our ndings to design an algorithm for chat thread detection. Here, we proposed two variations of cluster algorithm. The rst algorithm involves the traditional approach while in the second one, the temporal variations in RWT was taken into consideration to capture the dynamic nature of a text stream. An advantage of our proposed method over the previous models is that previous models have involved highly computationally intensive methods and often lead to deterioration in the accuracy of the result whereas our proposed approach uses a simple and effective sequential thread detection method, which is less computationally intensive.

<p>Sexuella närmanden som sker via nätet är dokumenterat i ett flertal studier. Dessa närmanden kan se ut på olika sätt, ofta i form av trakasserier. Anonymitet är en förutsättning för att kunna utsätta andra för sexuella närmanden. Bakom en dataskärm kan individer låtsas vara någon annan och därmed tänja på gränserna. Människor använder internet i olika syften, bland annat för att finna sexuella partners och kärlekspartners. Syftet med denna studie är att undersöka ungdomars attityder gentemot sexuella närmanden via internet. En gymnasieskola valdes ut där 170 elever (76 killar samt 86 tjejer) i årskurs ett (<em>n=</em>90) och tre (<em>n</em>=72) fick svara på en enkät. Resultatet visade främst signifikanta skillnader mellan könen i hur respondenterna reagerade och agerade när de blivit utsatt för sexuella närmanden via chattar och forum. Tjejer tenderar att i större utsträckning reagera negativt än killar.</p>

No description available.

Shy children often have difficulty communicating; however, it is not clear whether these difficulties stem from a skills deficit or from an anxiety-driven performance deficit. Therefore, the present study examined how shy children’s communication skills differed from those of average, non-shy children, using the Internet as a medium for social communication. It was hypothesized that shy children may be more reticent than average children to initiate conversation in a novel situation. However, over time shy children were expected to become more comfortable in discussions with their on-line partner and to become less anxious as they acknowledge the anonymity of chat groups. This study also investigated potential changes in negative effects associated with shyness over time. Fifteen shy children (Mean shyness score=72.3; SD=6.43) and 15 average children (Mean shyness score=53.7; SD=5.6) participated in the 10 MSN conversation groups. Children were also given a series of questionnaires prior to and after the 10 sessions. Results from this study suggest that shy children communicate in a similar manner to their average partners when online. Results also suggest that shy children had higher levels of social anxiety than average children before beginning an online conversation with an unknown partner. However, by the end of the 10 sessions, their anxiety had been significantly reduced. No other changes or differences in psychological functioning were noted between shy and average children.

Shy children often have difficulty communicating; however, it is not clear whether these difficulties stem from a skills deficit or from an anxiety-driven performance deficit. Therefore, the present study examined how shy children’s communication skills differed from those of average, non-shy children, using the Internet as a medium for social communication. It was hypothesized that shy children may be more reticent than average children to initiate conversation in a novel situation. However, over time shy children were expected to become more comfortable in discussions with their on-line partner and to become less anxious as they acknowledge the anonymity of chat groups. This study also investigated potential changes in negative effects associated with shyness over time. Fifteen shy children (Mean shyness score=72.3; SD=6.43) and 15 average children (Mean shyness score=53.7; SD=5.6) participated in the 10 MSN conversation groups. Children were also given a series of questionnaires prior to and after the 10 sessions. Results from this study suggest that shy children communicate in a similar manner to their average partners when online. Results also suggest that shy children had higher levels of social anxiety than average children before beginning an online conversation with an unknown partner. However, by the end of the 10 sessions, their anxiety had been significantly reduced. No other changes or differences in psychological functioning were noted between shy and average children.

No description available.

Sexuella närmanden som sker via nätet är dokumenterat i ett flertal studier. Dessa närmanden kan se ut på olika sätt, ofta i form av trakasserier. Anonymitet är en förutsättning för att kunna utsätta andra för sexuella närmanden. Bakom en dataskärm kan individer låtsas vara någon annan och därmed tänja på gränserna. Människor använder internet i olika syften, bland annat för att finna sexuella partners och kärlekspartners. Syftet med denna studie är att undersöka ungdomars attityder gentemot sexuella närmanden via internet. En gymnasieskola valdes ut där 170 elever (76 killar samt 86 tjejer) i årskurs ett (n=90) och tre (n=72) fick svara på en enkät. Resultatet visade främst signifikanta skillnader mellan könen i hur respondenterna reagerade och agerade när de blivit utsatt för sexuella närmanden via chattar och forum. Tjejer tenderar att i större utsträckning reagera negativt än killar.

<p>Abstract</p><p>This essay deals with the creation and usage of nicknames in synchronous CMC. Nicknames from four different IRC chat conversations related to three different topic groups have been examined. The method draws on Bechar-Israeli’s (1996) categorisation of nicknames, which has been adapted to suit the type of data sampled. Three research questions have been posed, which, in view of other studies related to this field of research (e.g. Ellison et al. 2006, Scheidt 2001, Chester & Gwynne 1998, etc.) have been examined to obtain information about the degree of anonymity and the topic-relatedness of nicknames used in chatrooms. The results show that users participating in synchronous CMC indeed follow topic-related rules for self-presentation and that anonymity has varying importance in different chatrooms.</p>

Thèse d'exercice : Médecine : Nancy 1 : 2003. / Titre provenant de l'écran-titre.

Reproduction de : Thèse d'exercice : Médecine vétérinaire : Toulouse 3 : 2008. / Titre provenant de l'écran-titre. Bibliogr. p. 91-97.