Quality-of-services in the domain of Web services plays a major role when utilizing Web services to various business scenarios. Reliable Messaging and secure conversation, governed by WSReliableMessaging [3] and WS-SecureConversation [4] specifications respectively, and many other WS-* specifications are such quality-of-services that most of the business integrations expect from Web service eng...

We report the results of an empirical analysis of learner discourse wherein we analyze the utility of domain keywords in determining the topics of conversation. The results provide a foundation for agent-based feedback to learners in a collaborative learning environment. We also track user actions on a graphical user interface to determine learners’ progress and the quality of their designs.

This paper describes a series of four conversation tests, which were carried out in order to assess speech quality under degradations occurring in combined PSTN/ISDN/VoIP networks. Based on the test results, the validity of predictions by the model currently recommended by the ITU-T for network planning (the E-model, [1]) is discussed.

The aim of the current study was to investigate whether L2 dialogue shadowing practice would have an effect on Iranian intermediate EFL learners’ conversation ability. For this purpose, 30 Iranian intermediate EFL learners at Padideh language center participated in the experiment of the study. The participants were divided into two groups of 15 who were assigned to the experimental and co...

Organization-bounded online communities compete as well as collaborate regarding valued member resources. Membership overlap creates competition amongst communities because their overlapping members must choose where to allocate their limited time. But members also collaborate across communities in inter-community discussion threads to tackle common problems together. This paper examines how me...

This paper uses a short 'Christmas fairy-story for oncologists' sent by Christopher Andrewes with a 1935 letter to Peyton Rous as the centrepiece of a reflection on the state of knowledge and speculation about the viral aetiology of cancer in the 1930s. Although explicitly not intended for public circulation at the time, the fairy-story merits publication for its significance in the history of ...

With large student enrollment, MOOC instructors face the unique challenge in deciding when to intervene in forum discussions with their limited bandwidth. We study this problem of instructor intervention. Using a large sample of forum data culled from 61 courses, we design a binary classifier to predict whether an instructor should intervene in a discussion thread or not. By incorporating novel...

A typical discussion thread in an online forum spans multiple pages involving participation from multiple users and thus, may contain multiple view-points and solutions. A user interested in the topic of discussion or having a problem similar to being discussed in the thread may not want to read all the previous posts but only a few selected posts that provide her a concise summary of the ongoi...

Purpose – The purpose of this paper is to explain some phenomena observed in the acquisition of motor skills: the loss of conscious access to knowledge of the structure of a skill and the awareness that an error has been made prior to the receipt of knowledge of results. Although there are rich descriptive accounts of skill acquisition in the literature, there are no satisfactory explanatory mo...