Search results for " Spatial"

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…

Firm demography and regional development: evidence from Italy

2017

This article contributes to the literature on firm demography and regional development in at least three different ways. First, consumption, rather than employment, which is the most common variable seen in literature, is used to measure the impact of firm demography on regional development. Second, while the literature is mainly focused on the relationship between new business formation and regional development, we investigate both entry and exit flows of firms. Third, we decompose each of these flows into spatial and sectoral components. The empirical investigation looks at the Italian regions with reference to the period 2004–2009. Results seem to be substantially divergent between the S…

A Proposal to estimate the roaming–dog Total in an urban area through a PPSWOR spatial sampling with sample size greater than two

2018

La Sicilia

2009

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…

Tiempo para hablar y tiempo para callar: uso y función del silencio en un auto religioso de fines del XVI

2013

En este artículo nos proponemos una primera aproximación a un auto religioso inédito de fines del siglo XVI titulado "Auto de la cena a lo divino", tomando como eje articulatorio del mismo la estrategia comunicativa que el anónimo dramaturgo lleva a cabo con la noción de silencio. En la primera parte analizaremos ampliamente el modo en que el autor se sirve de la ausencia de palabras para crear una atmósfera ritual y celebrativa que vincula esta pieza dramática con la liturgia. A continuación subrayaremos algunas fórmulas teatrales inherentes al lenguaje teatral relacionadas con el silencio que se descubren ineficaces en cuanto a su función primordial de generar tensión dramática, pero sí c…

Transizioni in periodi di incertezza. L’innovazione delle politiche regionali di governance per lo sviluppo auto sostenibile

2020

The basis of this contribution are a) the European Commission's regional innovation strategies for smart specialization (RIS3), b) the regional policies to combat the risk of decline and c) the governance model of Transition Management. Today the challenge consists in the validation of RIS3 even in the conditions of uncertainty exacerbated, for example, by the recent experience of COVID 19 as a global pandemic, trigger of the planetary economic and social decline. The guidance of the territorial transformations induced by RIS3 can be achieved with GIS technologies which, in turn, can constitute a single platform of the competent regional administration for urban and landscape planning. This…

Spatial microbial community structure and biodiversity analysis in "extreme" hypersaline soils of a semiarid Mediterranean area

2015

In recent years specific attention has been paid on the biotechnological potential of microorganisms in extreme soils, in particular in saline soils. Salinity is one of the most widespread soil degradation processes on the Earth, and saline soils can be defined as extreme soils or border line habitats in which several factors, as high salt content, may limit the growth of organisms. In this study, the physical, chemical and microbiological soil properties were investigated in the shallower horizon of natural saltaffected soils in Sicily (Italy). The main aim of the research was to evaluate the structure and diversity of bacterial and archaeal communities by terminal-restriction fragment len…

Spatio-Temporal Analysis of Urban Acoustic Environments with Binaural Psycho-Acoustical Considerations for IoT-Based Applications

2018

Sound pleasantness or annoyance perceived in urban soundscapes is a major concern in environmental acoustics. Binaural psychoacoustic parameters are helpful to describe generic acoustic environments, as it is stated within the ISO 12913 framework. In this paper, the application of a Wireless Acoustic Sensor Network (WASN) to evaluate the spatial distribution and the evolution of urban acoustic environments is described. Two experiments are presented using an indoor and an outdoor deployment of a WASN with several nodes using an Internet of Things (IoT) environment to collect audio data and calculate meaningful parameters such as the sound pressure level, binaural loudness and binaural sharp…

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…