This paper considers information trading in fixed networks of economic agents who can only observe and trade with other agents with whom they are directly connected. We study the nature of price competition for information in this environment. The linear network, when the agents are located at...

There is a significant pressure on Supreme Audit Institutions in Europe: shrinking available resources and growing expectations from its stakeholders (citizens, civil organizations, investors, governments etc.). In consequence of the financial and economic crisis and the unpredictable shocks,...

We analyze a model in which agents’ decisions to enter or exit investments are influenced from their individual and external parties’ transaction histories. Actual investment outcomes are unknown to all participants until the end of decision periods, but outcomes do change depending on the...

The objective of this paper is to theoretically analyze how human interaction may evolve in a world characterized by the explosion of online networking and other Web-mediated ways of building and nurturing relationships. The analysis shows that online networking yields a storage mechanism...

The paper discusses opportunities to utilize the series of micro-blogs as provided by the Twitter in observation of opinion dynamics. The spontaneity of tweets is more, as the service is attached more to the mobile communications. The extraction of information in the series of tweets is...

This paper develops a method for assessing food security information system with respect to its structure, connectedness and performance. The paper illustrates how to set up an operational food security information system, identify its leverage components and pathways of information flow, and...

This paper considers a model of observational learning in social networks. Every period, the agents observe the actions of their neighbors and their realized outcomes, and they imitate the most successful. First, we study the case where the network has finite population and we show that,...

This study seeks to develop a comprehensive methodology for assessing information system formation and performance. Our conceptual framework incorporates three complementary methods, which constitute the methodology developed. The first method proposes an approach to analyze the effects on the...

This paper introduces a method for characterising the structure of a multi-sector information system and illustrates its application in formulating testable hypotheses and targeting information policy for improved system performance. This characterisation is accomplished by identifying...

The focus of this study is on black markets which provide an important segment of the parallel economy. These markets operate in disequilibrium,search and information costs become very important.Trafficking in drugs taken as case, to explore both theoretically and empirically. The problem,...