Over the past several years, numerous essays have examined the deterrent effects of aggressive police patrol strategies like traffic law enforcement (Jacob and Rich, 1981; Sampson and Cohen, 1988; Wilson and Boland, 1978, 1981). This essay continues this line of research. It reports on the results of a field experiment in Dayton, Ohio, designed to measure the effects of traffic law enforcement ...

This paper presents a simple model of search and matching between consumers and firms. The firm size distribution has a Pareto-like right tail if the population of consumers grows at a positive rate and the mean rate at which incumbent firms gain customers is also positive. This happens in equilibrium when entry is sufficiently costly. As entry costs grow without bound, the size distribution ap...

interest free banking law at 1363 was implemented in the banking system in iran. one of the main goals of this law was eliminating usury from monetary system, and utilization from non-usury credit impact on economic growth through preferring money contribution in the capital. this paper uses data from years 1363 to 1386 and implementing herfindahl-hirschman index, evaluated and ranked concentra...

The original definition of a topological space given by Hausdorff used neighborhood systems. Lattice-valued maps appear in this context when you identify a topology with a monoid in the Kleisli category of the filter monad on SET. H?hle’s notion of a lattice-valued topology [2] uses the same idea and it’s inspired in the classical lattice-valued topologies. Ltopological spaces are motivated by ...

In that paper, the fuzzy nonlinear programming problem is discussed. In order to obtain more accurate solution, the properties of fuzzy set and fuzzy number with linear membership function and fuzzy maximum decision maker is utilized to fuzzifying the crisp problem. In the illustration, we have given a refinement to obtain this solution.

The Kinetic Gas theory like two-agent money exchange model, recently introduced in the Econophysics of wealth distributions, is revisited. The emergence of BoltzmannGibbs like distribution of money to Pareto’s law in the tail of the distribution is examined in terms of 2 × 2 transition matrix with a general and simplified outlook. Some additional interesting results are also reported. Introduct...