Nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. Arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. Psychological factors such as catastrophic thinking, symptoms of...

The World Wide Web (WWW) incorporates a huge potential for collaborative working. This paper focuses on Web page annotations that can enhance group–working on the Web drastically. A model of Web page annotations is introduced that defines relations between the users, the Web pages and their annotations. It is taken together with technological restrictions of existing approaches to form a taxono...

In an open innovation environment, organizational learning takes place by means of dispersed teams which expand their knowledge through collaborative idea generation. Research is often focused on finding ways to extend the set of ideas, while the main problem in our opinion is not the number of ideas that is generated, but a non-optimal set of ideas accepted during idea selection. When selectin...

Significant vulnerabilities have recently been identified in collaborative filtering recommender systems. These vulnerabilities mostly emanate from the open nature of such systems and their reliance on user-specified judgments for building profiles. Attackers can easily introduce biased data in an attempt to force the system to “adapt” in a manner advantageous to them. Our research in secure pe...

In this paper, we describe our on-going work on applying web mining to guide focused collaborative filtering for paper recommendations in a web-based learning system. In particular, we propose to first apply a data clustering technique on web usage data to form clusters (groups) of users with similar browsing patterns, which can be viewed as filtering based on implicit ratings (browsing sequenc...

Multi-user, interactive tabletops are an exciting new form factor to support collaborative group activities. To date, much of the research in this area has focused on co-located collaboration – groups of people seated around the same physical table. A natural step is to connect a co-located group working around a table to other remote sites, creating a shared collaborative environment. In this ...

Significant vulnerabilities have recently been identified in collaborative recommender systems. Attackers who cannot be readily distinguished from ordinary users may inject biased data in an attempt to force the system to “adapt” in a manner advantageous to them. Researchers have studied simple attack models and their impact on a system’s population of users. In this paper, we examine attacks t...

Collaborative tagging has been quickly gaining ground because of its ability to recruit the activity of web users into effectively organizing and sharing vast amounts of information. Here we collect data from a popular system and investigate the statistical properties of tag cooccurrence. We introduce a stochastic model of user behavior embodying two main aspects of collaborative tagging: (i) a...

Teacher-students’ and students-students’ interactions are of significant importance in foreign language teaching and learning. It is argued that interactions between teachers and students facilitate language development and lead to better language learning. The present study is an attempt to investigate the effect of two teaching approaches: 1. Task-Based Instruction (TBI) and 2. Form-Focused I...

This paper investigates the effectiveness of concordance-based material for an EFL problem—misordering in expressions of measurement. A specifically designed preand posttest is developed for testing Thai students’ ability to use the expression. The sample comprises four groups of university students in their first and second years (two groups each). One first year group and one sophomore group ...