Search results for "agglomeration"
showing 10 items of 88 documents
La mancata agglomerazione del settore lapideo di Custonaci, inizio della crisi 2007-2017
2017
This paper analyzes the stone sector in Sicily in the period 2007-2009, with particular reference to the system of Custonaci, one of the representative sites of the Sicilian marble. The sector has gone through a deep crisis aggravated by structural elements such as the lack of coordination between operators. The research carries out an analysis on the main structural, economic and financial characteristics of a representative sample of 25 companies in the area in order to verify the existence of a consolidated network of enterprises and the applicability, to this reality, of A district theoretical model. This paper indicates the need for the creation of a network system between companies an…
Improving the Traditional Measures of Agglomeration with Neighbouring Effects
2009
The traditional measures of concentration are based on the hypothesis that agglomeration forces among plants appear only inside of a single area and they do not have any effect outside of it. Instead, it is reasonable thinking to the existence of factors exerting their effects not only within the territory where they were originated but, in the meantime, producing spillovers into neighbouring areas. Building on this assumption, this paper contributes to the agglomeration literature by proposing an extension of the traditional agglomeration measures that account for externalities that cross the barriers of the geographical units under analysis. So, we want to examine the spatial dependence a…
Measurement of Agglomeration and Spatial Effects
2009
The aim of the paper is to examine the influence of spatial agglomeration on the employment growth in the sicilian local labor systems. In this paper we want provide a methodological contribution to agglomeration literature. On the base of the hypothesis that the forces of agglomeration do not use up their effects inside of a single SLL but they extend to more wide geographic areas, and their effect fall down on the adjacent territorial partition; we have modified the traditional agglomeration index built by Maurell and Sédillot in 1999, at first, inverting the role of the industry with that one of the area, so we obtain a measure of agglomeration for each area, and then we included a spati…
Measuring agglomeration by spatial effects: a proposal
2015
In this paper we examine the influence of spatial dependence on the estimation of the effect of standard measures of agglomeration on local growth. The hypothesis is that the forces of agglomeration do not use up their effects inside a single local area but extend to wider geographic areas, particularly on the adjacent territories. To account for these spatial effects, we propose a modification of the traditional agglomeration index, suggested by Maurel and Sedillot (1999), including both agglomeration of economic activity within an area and neighbour effects, that is, the effect of agglomeration that comes from neighbouring areas. In the empirical exercise we compute the a-spatial and the …
Urban densities and economic analyse of residentials choices
2016
The thesis is focused on urban growth control challenge through the Compact City model and its key spatial characteristic: the density. This work deals both with a theoretical, methodological and empirical approach. First, we place ourselves in the theoretical framework of Urban Economic addressing agents’ location choices. We mobilize these theories to identify the key determinants of residential location (employment center, spatial amenities, housing’s service) and analyze the spatial organization that follows (dense or spread). This literature leads us to consider different types of density: structural density, population density and social density. This thesis highlights various methodo…
Fractal geometry for measuring and modelling urban patterns
2007
Urban growth generates nowadays patterns, which look rather irregular. Planning policy regrets the lack of compactness and density of these agglomerations, but controlling urban sprawl turns out to be difficult. Obviously a new type of spatial organisation emerges, which is rather the result of a self-organisation process to which a high number of social agents contribute. In the present contribution we focus on the use of fractal geometry which turned out to be a powerful instrument for describing the morphology of these patterns. After an introduction about the context of research, fractal models are presented, which serve as reference models for better understanding the spatial organisat…
Delineation of the boundary of an urban agglomeration: evidence from Riga, Latvia
2019
AbstractStatistical, morphological and functional approaches have long been used to delineate spatial boundaries of urban agglomerations. This research uses data from the Central Statistical Bureau and the State Revenue Service. The results indicate that morphological and functional approaches are essential when defining the agglomeration, however the outcomes are different. The most relevant consistency was observed in the territorial units adjoining the city of Riga due to the fact that they have a common labour market with Riga and share a strong functional linkage. However, the spatial extent based on the morphological approach confirms and highlights the effects of urban sprawl.
Circular economy - foundament of challenges for business environment
2017
Abstract Circular economy is one of the fundamental pillars of sustainable development. The limited character of resources, the demographic explosion, the urban agglomerations and the high volume of waste have become extremely sensitive issues in the current period. As a result, the implementation of policies based on fundamental objectives such as material recycling, energy consumption from renewable sources and the design of products that meet the recycling and re-use requirements must be a priority for the worldwide. The paper aims to highlight the principles underpinning the circular economy and to identify the challenges faced by important areas in terms of the capacity to ensure their…
International trade and internal geography revisited
2003
Trade liberalization and trade policy obviously affect the internal distribution of economic activities within a liberalizing country. We show that the impact of decreasing international trade costs on the regional distributionof economic activities crucially depends on the value of transport costs internalto the country. Trade liberalization in developing countries with poor internal infrastructures and small volumes of interregional trade is likely to increase regional disparities, while developed countries with good internalinfrastructures and large volumes of interregional trade are likely to experienceredispersion. We argue that the way transport and trade costs are modeledmight have a…
Clustering cities through urban metrics analysis
2017
[EN] This paper describes a process for measuring and characterizing urban morphological zones. These urban zones are delineated for the entire area of Spain, independently of administrative boundaries and excluding demographic data, using a high resolution land-use dataset. Given the rich information available on land cover and subsequently assigned population data, it is possible to calculate a set of urban spatial metrics to classify these urban zones into homogenous morphological groups. Four types of urban agglomerations are identified in Spain by working with these urban metrics and applying a final cluster analysis. Although these groups have a general complex monocentric typology, e…