With the development of the Internet, recommender systems have played a more and more important role in the field of big data processing, such as e-business. In order to deal with big data in recommender systems, we propose a clustering and correlation based collaborative filtering algorithm for cloud platform, which improves the traditional user-based collaborative filtering algorithm with k-m...

From human–computer interaction to human–human interaction and from information sharing to instant collaboration are major advances from traditional standalone and distributed CAD to collaborative CAD. This paper explores model, method and tool to achieve this goal. A humancentered collaborative design model to support human–human interaction is presented. A method to transparently add aware ca...

this paper focuses upon the development of an efficient method for conceptual design optimization of a satellite. there are many option for a satellite subsystems that could be choice, as acceptable solution to implement of a space system mission. every option should be assessment based on the different criteria such as cost, mass, reliability and technology contraint (complexity). in this rese...

This article presents the study requests for collaborative systems, the structure and volume of data necessary for collaborative systems analysis. The paper defines procedures for collecting and validating data. This article identifies algorithms to construct homogeneous collectivities. Calculations are carried out with very large data sets and the results are interpreted.

Background and Objective: Co-authorship on writing articles is one of the indicators of reliability in scientific articles. Due to the lack of information regarding to the rate of participation of the authors of articles in the ” Iranian Journal of Pathology” this research with the aim of the survey of collaborative coefficients of article authors in this Journal  from 2006 to 2012 was performe...

How do English as a lingua franca (ELF) speakers achieve multimodal cohesion on the basis of their specific interests and cultural backgrounds? From a dialogic and collaborative view of communication, this study focuses on how verbal and nonverbal modes cohere together during intercultural conversations. The data include approximately 160-minute transcribed video recordings of ELF interactions ...