One of the most problematic areas in foreign language learning is collocation. It is often seen as arbitrary and an overwhelming obstacle to the achievement of nativelike fluency. Current second language (L2) instruction research has encouraged the use of collaborative output tasks in L2 classrooms. This study examined the effects of two types of output tasks (editing and cloze) on the learni...

Research in L1 writing has found numerous benefits of employing collaborative learning in the classroom. The research findings on group work provide clear evidence that engaging learners in group activities increases opportunities for students to engage in the negotiation of meaning, which further leads to better acquisition. The present study, implementing two different collaborative feedback ...

recommender systems utilize information retrieval and machine learning techniques for filtering information and can predict whether a user would like an unseen item. user similarity measurement plays an important role in collaborative filtering based recommender systems. in order to improve accuracy of traditional user based collaborative filtering techniques under new user cold-start problem a...

one of the distinguishing features of implementation research is the importance given to involve implementers in all aspects of research, and as users of research. we report on a recent implementation research effort in india, in which researchers worked together with program implementers from one of the longest serving government funded insurance schemes in india, the rajiv aarogyasri scheme (...

to investigate the effect of massed and distributed collaborative and non-collaborative presentation on l2 learners’ comprehension and production of lexical collocations, 105 participants at takestan islamic azad university in 4 groups were assigned to four different treatment conditions (collaborative-massed; collaborative-distributed; noncollaborative-massed; and noncollaborative-distributed ...

Background: Collaborative care can be used as a component of self-care in reducing the complications of care in family caregivers of mental patients. Therefore, the present study aims to "determine the impact of the use of collaborative care model on the care burden parameters of the family of patients with mental disorders". Methods: In this clinical trial, 66 households from family...

Large information repositories, such as the World Wide Web or Usenet News, ooer an amazing wealth of information. Searching for valuable information is an eeort that permanently occurs in organizations and that contributes to the organizational memory. Active collaborative ltering builds on the exploitation of the results of this eeort by encouraging the members of an organization to share info...

In this paper, we overview the current status of research in the field of collaborative sensing for urban transportation. We first classify the different types of sensors that can be relevant in collaborative urban sensing and then we analyze three different topics: parking spaces, traffic, and trajectories. We discuss issues regarding the sensing and data sharing approaches as well as relevant...

This paper considers the problem of matrix completion, when some number of the columns are arbitrarily corrupted. It is well-known that standard algorithms for matrix completion can return arbitrarily poor results, if even a single column is corrupted. What can be done if a large number, or even a constant fraction of columns are corrupted? In this paper, we study this very problem, and develop...