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This conceptual article aims to explore the current state of knowledge management systems, to describe the potential role of synthetic worlds for knowledge integration, and to suggest a future research agenda.

Using the constraints of current knowledge management systems outlined in Alavi and Tiwana as a guiding structure, this article explores knowledge integration through a synthetic world and outlines several propositions intended to frame existing knowledge and guide the development of future inquiry.

Current knowledge management systems neither exploit the capabilities of high performance computing, nor adequately address organizational challenges presented by increasingly knowledge‐laden, dispersed, global organizations. The limitations of current systems: constraints on transactive memory, insufficient mutual understanding, limited retention of contextual knowledge, and inflexibility of organizational ties; can be effectively addressed through the synthetic world environment.

Debate regarding the role of Web 2.0 in twenty‐first century knowledge management continues. In order to move this debate forward, the Web 2.0 phenomenon must be unbundled and the role a specific virtual environment may play considered. To that end, this article explores the potential role of synthetic worlds for organizational knowledge management and integration. It heightens awareness and generates dialogue that fosters an appreciation of the emerging synthetic world environment.

This paper aims to use the second law of thermodynamic to evaluate the potential of gear-ring turbulator in a three-dimensional heat exchanger tube. Accordingly, a numerical simulation is performed to obtain the irreversibilities in a three-dimensional heat exchanger tube equipped with some gear-ring turbulators for turbulence regime.

A numerical simulation is performed to obtain the irreversibilities in a three-dimensional heat exchanger tube equipped with some gear-ring turbulators for turbulence regime. The analysis is carried out based on shear stress transport (SST) k-ω turbulent model. The influences of different parameters containing tooth number, free-space length ratios and Reynolds number on frictional and thermal irreversibilities and Bejan number are discussed.

The results indicated that the thermal irreversibility reduces by decreasing the tooth number. For example, the thermal entropy generation decreases about 25.81 per cent by decreasing the tooth number in the range of 24 to 0 at Re = 6,000. Moreover, the frictional entropy generation decreases by increasing the tooth number as the gear with more tooth number causes a lower flow disturbance.

The present study arranged a numerical work to study the potential of a gear-ring turbulator in a heat exchanger tube from first and second laws of thermodynamic viewpoint. The turbulent flow is considered for this problem. The literature review showed that the usage of a gear-ring turbulator in a heat exchanger tube is not investigated from the second law of thermodynamic viewpoint by previous studies. As a result, the influences of different parameters containing tooth number, free-space length ratios and Reynolds number on frictional and thermal irreversibilities and Bejan number are discussed.