The launch of Amazon’s e-Marketplace to co-locate primary (sale of new books) and secondary (resale of used books) markets has disrupted the serenity of the book markets and invited enormous debate over the survivability of the primary market sellers. Grounded on information economics and decision under uncertainty, this study takes a different perspective by arguing that whether Amazon’s marke...

Data aggregation of data from multiple sensor nodes done at the aggregating node is usually accomplished by simple methods such as averaging. However such aggregation is known to be highly vulnerable to node compromising attacks in WSN are usually unattended and without tamper resistant hardware, they are highly susceptible to such attacks. Thus, ascertaining trustworthiness of data and reputat...

social marketing is defined as applying marketing tools to achievedesired social targets. in other words, social marketing is the usage ofcommercial methods to increase a target group's ability to admit a belief oran action. in this article, the effect of sport clubs reputation and name on animprovement and a change in their fans' behavior was studied. using semmethod, the results dem...

Though trust and reputation systems have been extensively studied, general architectural commonalities between the two have received little attention. In this paper, we present a life cycle model of reputation and trust systems, along with accompanying measures of how much effect signaling and sanctioning have on a given system. We map reputation attacks within our framework and apply our frame...

Reputation management systems are in wide-spread use to regulate collaborations in cooperative systems. Collusion is one of the most destructive malicious behaviors in which colluders seek to affect a reputation management system in an unfair manner. Many reputation systems are vulnerable to collusion, and some model-specific mitigation methods are proposed to combat collusion. Detection of col...

Reputation concerns may help to achieve efficiency in cases where imperfect information impedes it. In this paper I highlight the endogenous property of reputation and analyze how it undermines the effectiveness of reputation to achieve efficiency. More reputation implies the possibility of undertaking more activity. At the same time, more activity generates more signals under which reputation ...