Data warehousing is gaining in popularity as organizations realize the benefits of being able to perform sophisticated analyses of their data. Recent years have seen the introduction of a number of data-warehousing engines, from both established database vendors as well as new players. The engines themselves are relatively easy to use and come with a good set of end-user tools. However, there i...

Discrete event simulation (DES) is a widely-used operational research methodology facilitating the analysis of complex real-world systems. Although, generally speaking, simplicity is greatly desirable in DES modelling applications, in many cases the nature of the underlying system results in simulation models which are large in scale, complex, and expensive to run. As such, the careful design a...

The Indus Valley Civilization (IVC) was one of the first great civilizations in prehistory. This bronze age civilization flourished from the end of the fourth millennium BC. It disintegrated during the second millennium BC; despite much research effort, this decline is not well understood. Less research has been devoted to the emergence of the IVC, which shows continuous cultural precursors sin...

This paper presents an endogenous growth model in which the research activity is ...nanced by intermediaries that are able to reduce the incidence of researcher’s moral hazard. It is shown that ...nancial activity is growth promoting because it increases research productivity. It is also found that a subsidy to the ...nancial sector may have larger growth e¤ects than a direct subsidy to researc...

From 1990 to 1997, over 710 thousand Russian Jews emigrated to Israel, increasing Israel’s working-age population by 15 percent. This paper argues that a canonical onesector neoclassical growth model explains both the short run and the medium run response of Israel’s economy to this shock. Specifically, we show that average effective wages of native Israelis fell and the return to capital incre...

This paper investigates the efficiency of an alternative to ratio estimator under the super population model with uncorrelated errors and a gamma-distributed auxiliary variable. Comparisons with usual ratio and unbiased estimators are also made.

This paper describes a combination of simulation and knowledge based assessment models used in the operational analysis of future space transportation systems. The model uses knowledge based logic as estimating relationships combined with a process database to estimate the appropriate ground processes, their duration, and their variability. The developed process model is used to populate a simu...

This paper takes as its starting point the assumption that the 'Epidemiological Imagination' has a central role to play in the future development of policies and practice to improve population health and reduce health inequalities within and between states but suggests that by neglecting the contribution that qualitative research can make epidemiology is failing to deliver this potential. The p...