Search results for " Regional planning"

Growth dynamics and space in Brazil

2003

The authors bring together two strands of the empirical literature and analyze the geography of the regional economic performance of the states of the Brazilian Federation from 1939 to 1998. Using tools from spatial statistics, they examine the spatial dependence of regional per capita income in Brazil during the past six decades. They also examine the role of geography in explaining economic growth patterns using intradistribution dynamic tools based on Markov transition matrices and stochastic kernels in a discrete and a continuous framework. The analyses reveal the existence of two spatial clusters in Brazil, a low-income cluster in the northeast and a high-income cluster in the southea…

Upper and lower bounds for the vehicle-routing problem with private fleet and common carrier

2019

Abstract The vehicle-routing problem with private fleet and common carrier (VRPPC) extends the capacitated VRP by considering the option of outsourcing customers to subcontractors at a customer-dependent cost instead of serving them with the private fleet. The VRPPC has important applications in small package shipping and manufacturing, but despite its relevance, no exact solution approach has been introduced so far. We propose a branch-price-and-cut algorithm that is able to solve small to medium-sized instances and provides tight lower bounds for larger instances from the literature. In addition, we develop a large neighborhood search that shows a decent solution quality and competitive r…

Exhaustive generation for permutations avoiding (colored) regular sets of patterns

2019

Abstract Despite the fact that the field of pattern avoiding permutations has been skyrocketing over the last two decades, there are very few exhaustive generating algorithms for such classes of permutations. In this paper we introduce the notions of regular and colored regular set of forbidden patterns, which are particular cases of right-justified sets of forbidden patterns. We show the (colored) regularity of several sets of forbidden patterns (some of them involving variable length patterns) and we derive a general framework for the efficient generation of permutations avoiding them. The obtained generating algorithms are based on succession functions, a notion which is a byproduct of t…

Modeling urban growth by cellular automata

1996

International audience; The structural development of human settlements can be characterized as a complex highly feedbacketed process. The assumption that this process is governed by rather few fundamental laws stimulated a considerable research in the field of urban growth during the last decade. Aiming at the comprehension of the basic underlying dynamics different approaches from the field of self-organizing systems have been proposed. In this paper we present a "cellular model" of urban growth dynamics based on the work of White, Engelen and Uljee. As a starting point this model throws some light on the mechanism of urban growth. But even more important, it raises a lot of questions con…

From Classroom to Career in Sibiu Romania – Engineering Students’ Perception on Internships and School Practices

2019

Abstract This article aims to highlight the most important ideas about internships and school practices from students’ point of view. The paper is structured in three parts. In the first section the topic based on building a career in Romania while being a student is discussed along with the employers’ expectations of having experience for getting a job and the problematic of today educational system. Further on the differences between traineeships and internships are detailed according to the Romanian framework and international sources to see exactly what do these mean and which one weights more for a company at the time of interviewing. Taking into the account what has been mentioned a s…

Agri-urban patterns in Mediterranean urban regions: the case study of Pisa

2020

International audience; Urban regions require planning tools in order to manage agricultural areas under urban pressure. The aim of our paper is to test an analytical framework that combines both the composition in urban and agricultural land covers and their spatial configuration into four general agri-urban patterns: isolated fields, urban belt fields, periurban agricultural areas and rural areas. We evaluated the spatial distribution and the changes of such patterns in the short-term (2003-2011) starting from Spot images for the case study of Pisa, Italy. The results indicate an increase of the most urban patterns despite continuing to have cash crops, a stability of periurban agricultur…

Landscape Dynamics in Mediterranean Coastal Areas: Castelló de la Plana in the Last Hundred Years

2019

The littoral areas of the Mediterranean coastline have undergone a significant transformation due to their historical and intense human occupation. The result has been an evolution of different cultural landscape configurations, ranging from those with a marked agrarian character to artificial ones derived from the process of urbanisation and metropolitan growth. The objective of this paper is to define a model to characterise landscape types and units that explains the landscape dynamics (1910-2015) in Mediterranean coastal spaces at local scale, taking as study area the municipality and surroundings of Castelló de la Plana, in Spain. The aim is to identify the way in which society has app…

Creative industries and productivity in the European regions. Is there a Mediterranean effect?

2021

Soil erosion processes in subtropical plantations ( Diospyros kaki ) managed under flood irrigation in Eastern Spain

2019

Persimmons (Diospyros kaki) are trees cultivated under subtropical environmental conditions but are also found in other regions such as the Mediterranean. However, no research has been conducted to investigate soil erosion processes under Mediterranean soil management systems characterized by flood irrigation and/or tillage. The Improved Stock Unearthing Method (ISUM) for assessing long-term soil mobilization was applied to two fields, one under tillage and the other under no-till with herbicide within a 25-year old Mediterranean persimmon plantation. Replicating methods used in vineyard studies, graft unions on persimmon plants were used as passive bio-indicators of soil surface changes in…

Mediterranean Struggles for Movement and the European Government of Bodies: An Interview with Étienne Balibar and Nicholas De Genova

2017

The conversation between Etienne Balibar and Nicholas De Genova engages with the Mediterranean of migration as a multifaceted, productive, and contested space, which can represent a counterpoint to a deep-rooted Eurocentric imaginary. Looking at the Mediterranean as a space produced by the mobility of the bodies crossing it and by the combination of different struggles, Balibar and De Genova comment on some of the political movements that have taken center stage in the Mediterranean region in the past few years and suggest that the most important challenge today is to mobilize a “Mediterranean point of view” whereby the political borders of Europe and its self-centered referentiality can be…