During past decades, substantial skill and occupation relocation took place across U.S. cities: big cities attract more skilled workers and specialize more in cognitiveintensive occupations. Motivated by the empirical literature on improvement in Information and Communications Technology (ICT) and the increasing domestic production fragmentation—or domestic offshoring—we develop a spatial equil...

In recent years, the studies of location play a key role in success and stability of economic activities. Location studies are under consideration in both national and international levels. Meanwhile, identification of goals and methods of solving location problems have significant importance. The purpose of this paper is to examine spatial distribution of economic activities in 14 zones of Esf...

introduction spatial studies as the main tools for the detailed study of all tangible and intangible aspects of regions have special ranks among all kinds of planning. the conformity of this organization with physical environment forms the spatial structure of which is usually observed as a distributed and isotropic spatial structure, focus and polar, unbalanced and haphazard, random and balanc...

spatial justice with scientific and humanitarian teachings, cause the weaknesses and strengths in different areas. since most of the allocation and distribution of national and regional resources in the country through focused planning, the present study is an analysis of spatial justice of rural services in the isfahan province. the research method is descriptive and analytic. the required dat...

many studies on precipitation trend have been performed in recent years (e.g., brunetti et al., 2006; rodrigo et al., 2007; turkesh, 1996), but spatial analysis of the sign of trends is rarely carried out (suppiah and hennessy, 1998; de luis et al., 2000). in the present paper we analyze the observational precipitation data from some oldest meteorological stations to investigate the possible sy...

in spite of sonic pessimistic attitudes towards methodology of economics, it has succeeded as a central theme in numerous books, refereed journals, international conferences and symposiums whose volume is increasing at an unprecedented rate. the proliferation of methodological literature also is accompanied by a proliferation of issues that concern: the goals of economics, realism of economics,...

The main purpose of this paper is to estimate the volatility in global fertilizer prices. The endogenous structural breakpoint unit root test and alternative volatility models, including the generalized autoregressive conditional heteroskedasticity (GARCH) model, Exponential GARCH (EGARCH) model, and GJR model are estimated for six global fertilizer prices and the crude oil price. Weekly data f...