This work presents a new approach for collaboration among sensors in Wireless Sensor Networks. These networks are composed of a large number of sensor nodes with constrained resources: limited computational capability, memory, power sources, etc. Nowadays, there is a growing interest in the integration of Soft Computing technologies into Wireless Sensor Networks. However, little attention has b...

Collaborative beamforming is a powerful technique to increase communication energy efficiency and range in an energy-constrained network. To achieve high performance, collaborative beamforming requires accurate knowledge of channel state information (CSI) at the transmitters (collaborative nodes). In practice, however, such exact knowledge of CSI is not available. A robust transmitter design ba...

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...

Introduction: The collaborative learning and interactive electronic-learning (e- learning) is one of the key factors in education system success. This study examined the collaborative e-learning in the framework of constructivism theory. Methods: This is a review article. The databases such as Scientific Information Databases, Magiran, Science Direct, and Google Scholar were reviewed. Also,...

In the conventional system development life cycle (SDLC), system performance and evaluation phase comes after the implementation phase. The aim of this research is to project system performance estimate at the requirement analysis and design phase itself, much before the implementation phase. This study introduces novel tools for modelling the system, evaluating the performance of the system an...

The OER is a comparatively innovative phenomenon which perhaps seen as a part of a bigger movement towards openness in advanced education including more familiar and recognized trends, for example Open Access (OA) and Open Source Software (OSS). This study introduces a web based service for collaborative authoring learning to create, share and explore dynamic contents since many problems occurr...

This article analyzes the existing collaboration networks in the Brazilian scientific output in Evolutionary Biology, considering articles published during the period from 2000 to 2012 in journals indexed by Web of Science. The methodology integrates bibliometric techniques and Social Network Analysis resources to describe the growth of Brazilian scientific output and understand the levels, dyn...