This paper models a dynamic scholar’s allocation of time between academia and professional activities outside academia, given the academic labor market and social interactions. The model shows how particularly in less developed countries business and political networks may have large negative...

When focusing on firm’s risk-aversion in industry equilibrium, the number of firms may be either larger or smaller when comparing market equilibrium with and without price uncertainty. In this paper, we introduce risk-averse firms under cost uncertainty in a model of spatial differentiation...

This paper modifies a standard model of law enforcement to allow for learning by doing. We incorporate the process of enforcement learning by assuming that the agency’s current marginal cost is a decreasing function of its past experience of detecting and convicting. The agency accumulates...

Using the principal-agent- supervisor paradigm, this paper examines the occurrence of collusion in a setting where the principal has no information about the supervisor and the agent does not necesarily know the supervisor’s preferences.We formally prove the occurrence of collusion is more...

We propose a dynamic efficiency wage model with learning by doing. By taking into account the change inthe stock of workers’ knowledge, firms set efficiency wages such that the effort–wage elasticity is not in general equal to one.

Heterogeneous firms facing demand-induced price fluctuations imperfectly compete for heterogeneous workers. It is shown that unemployment may arise in equilibrium because of the combination of uncertainty on product price and mismatch between workers’ skills and firms’ job requirements.

This paper responds to the criticism of the Zubair Diminishing Balance model for Islamic home financing that Ahmad Kameel Meera published in the ISRA Journal. The response argues that most of the comments of Meera are frivolous and misplaced. It reiterates that the ZDBM is much different from...

The worldwide colossal failures of financial institutions in the wake of the 2007–2010 financial turmoil the yesteryear advocates of liberalization and privatization converted almost overnight into vocal supporters of raising the safety walls around the interests of various stakeholders,...

This paper deals with familiar facts in monetary economics from an unfamiliar angle. It argues that it is not factual to regard the legal tender money and bank credit as of different genus: they work in tandem to the same ends in an economy, conventional or Islamic. Also, it does not matter what...

In my latest article on Islamic home financing models in the ISRA Journal June 2013, I had shown that the Zubair Diminishing Balance Model (ZDBM) is free of return compounding and the transfer of ownership to the customer perfectly matches the payments’ rate; the two norms Islamic models must...