Purpose – Turvey (2007, Physica A) introduced a scaled variance ratio procedure for testing the random walk hypothesis (RWH) for financial time series by estimating Hurst coefficients for a fractional Brownian motion model of asset prices. The purpose of this paper is to extend his work by...

Purpose – This paper seeks to characterize the behavior of the naira/dollar foreign exchange rate series over the period 1999 through 2006 to determine if the process generating the series has long memory which is a special case of fractional Brownian motion. The existence of long memory...

Abstract Many governments, political economists and terrorist experts consider the use of military and police forces as the ultimate way to effectively deter terrorism. The most effective negative sanctions are considered to be military strikes, aggressive actions (including crackdowns, search...

This article investigates the most appropriate accounting treatment for expensing the fair value of employee share options (ESOs) in financial statements. The debate centres around whether the grant date or the exercise date is the most appropriate date for determining the value at which the...

Purpose – The purpose of this paper is to explore direct and indirect effects of pre-venture managerial experience (PVME) on new venture innovation. Using opportunity-costs framework, the following questions are explored: does the entrepreneur's PVME directly affect the extent of innovation in...

Purpose – The main objective of this paper is to analyze the relationship between employees' propensity to innovate and cultivate entrepreneurial aspirations whilst working within an organization. This paper aims to contribute to a better understanding of this interrelation, reflecting from a...

Information technology (IT) tends to be viewed as ancillary to core government functions. Consequently, IT is often outsourced to the private sector. Unfortunately, there is a long line of failed outsourced projects. This article uses two New Zealand case studies, the particularly public failure...

With the rapid development of E-commerce, more and more E-commerce enterprises attach great importance to customer experience, and B2C E-commerce enterprises make no exception. The good customer experience can promote customers' perception of the service level of B2C E-commerce enterprises....

Abstract Most economic theories on patent pools focus exclusively on patent owners’ licensing practices in explaining why patent owners voluntarily form a patent pool. Such an approach ignores the “property” root of patents. Judge Posner emphasized the importance of using economic theories...