We develop a monopolistically competitive model of trade with firm heterogeneity in terms of productivity differences and endogenous differences in the 'toughness' of competition across markets in terms of the number and average productivity of competing firms. We analyze how these features vary across markets of different size that are not perfectly integrated through trade; we then study the ...

among the agricultural important factors, inputs are the most significant in agricultural production. this article aimed to examine the impact of government subsidy policies on production of one of the most strategic products, namely on production of one of the most strategic products, namely maize, in iran. to achieve this goal, panel data for the nine provinces of iran's major producers of ma...

Recent scientific concerns to achieve sustainability in construction have suggested the implementation of using recycled aggregate in concrete because it has the potential to reduce the demand for extraction of natural raw materials and decrease the volume of wastes landfilled. In this respect, this study aims to investigate the suitability of using ceramic tile (CT) and ceramic sanitary (CS) w...

Article history: Received 12 May 2010 Received in revised form 6 March 2011 Accepted 26 May 2011 Available online 7 June 2011

We focus on the problem of constructing functions that are able to measure the degree of consensus for a set of inputs provided over the unit interval. When making evaluations based on inputs from multiple criteria, sources or experts, the resulting output can be seen as the value which best represents the individual contributions. However it may also be desirable to know the extent to which th...

Dialectometric techniques for analyzing variation in the aggregate are maturing rapidly, but there is still little agreement on how to extract linguistic structure from aggregate comparison. The present paper explores one means of comparing aggregate analyses in order to determine linguistically concise restrictions, essentially the use of factor analysis. Using the Southern states data which G...

There is given a short overview of the monograph ”Aggregation Functions” (M. Grabisch, J. L. Marichal, R. Mesiar, E. Pap), Cambridge University Press (in press) with more details from introductory Chapters 1 and 2.

This article studies a large class of averaging aggregation functions based on minimizing a distance from the vector of inputs, or equivalently, minimizing a penalty imposed for deviations of individual inputs from the aggregated value. We provide a systematization of various ty es of penalty based aggregation functions, and show how many special cases arise as the result. We show how new aggre...

Consider two sets of spatial objects R and S, where each object is assigned a score (e.g., ranking). Given a spatial distance threshold and an integer k, the top-k spatial distance join (k-SDJ) returns the k pairs of objects, which have the highest combined score (based on an aggregate function γ) among all object pairs in R×S which have spatial distance at most . Despite the practical applicat...

We accomplish two tasks to characterize aggregate price stickiness in this paper. First, we endogenize β, the fraction of the firms keeping their price unchanged following a money supply shock in the near-rationality model (Akerlof and Yellen, 1985) by introducing a distribution of price-adjustment barriers among the firms into the near-rationality model. Second, as β can be considered an indic...