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61.
Rafael González‐Val 《Journal of regional science》2010,50(5):952-972
ABSTRACT This paper analyses the evolution of city size distribution in the United States throughout the twentieth century. It tests the validity of two empirical regularities studied in urban economics: Zipf's law (the rank‐size rule), and Gibrat's law, or the law of proportionate growth. The main contribution of this work is the use of a new database with information on all the cities (understood as incorporated places), without size restrictions. Our results enable us to confirm that Gibrat's law holds (weakly), and that Zipf's law holds only if the sample is sufficiently restricted at the top, not for a larger sample. 相似文献
62.
Rafael SuárezVega Dolores R. SantosPeñate Pablo DortaGonzález 《Journal of regional science》2004,44(3):569-588
Abstract. We investigate the ( r ∣ X p )‐medianoid problem for networks. This is a competitive location problem that consists of determining the locations of r facilities belonging to a firm in order to maximize its market share in a space where a competitor is already operating with p facilities. We consider six scenarios resulting from the combination of three customer choice rules (binary, partially binary, and proportional) with two types of services (essential and unessential).
Known discretization results about the existence of a solution for the set of nodes are extended. Some examples and computational experience using heuristic algorithms are presented. 相似文献
Known discretization results about the existence of a solution for the set of nodes are extended. Some examples and computational experience using heuristic algorithms are presented. 相似文献
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64.
Martínez Sánchez Rafael M. Vera-Rodríguez Juan Carlos Pérez-Jordà Guillem Moreno-García Marta Bokbot Youssef Peña-Chocarro Leonor 《African Archaeological Review》2021,38(2):251-274
African Archaeological Review - This study focuses on the chronostratigraphic sequence of the Cave of Kaf Taht el-Ghar (Dar Ben Karrich, Tétouan, Morocco) excavated in 2012 in the framework of... 相似文献
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66.
Luciana Sianto Sérgio Augusto de Miranda Chaves Isabel Teixeira-Santos Paula Alves Pereira Ricardo Miguel Godinho David Gonçalves Ana Luísa Santos 《Archaeological and Anthropological Sciences》2018,10(1):75-81
The period of European maritime expansion that started in the fifteenth century had a great impact on trading, on human migrations and consequently in the dispersion of infectious diseases. Portugal was at the core of this expansion; however, studies about parasitic infections, especially helminths, are lacking. This study aims to help reduce this gap presenting the results of microscopic analysis of soil sediments collected from the São Jorge churchyard of Sarilhos Grandes (Montijo). Consecrated in the fourteenth century AD, it remained as a burial ground until the nineteenth century. Soil samples collected from the pelvic girdle of five adult individuals and samples taken as control were analysed under the microscope after current conventional methodological procedures were undertaken. Eggs from Ascaris lumbricoides were identified. Also eggs of trichostrongyle type species were identified in two individuals and may represent the first report in archaeological European samples. Food remains include potato and rice starches, muscle fibres, bivalves, pollen grains and fungi spores. The stratigraphy interpretation together with potato findings put the oldest skeletons to a chronology around the sixteenth century AD. These results are consistent with historical sources that documented the prominence of Tagus river nearby villages in maritime expansion. 相似文献
67.
Recent data from the site of Cerro Lampay, a Late Archaic Period compound in central Peru, sheds light on the role of ritual and architectural construction in the emergence of social complexity in the Central Andes. Excavations at this site have provided a detailed documentation of the building process that ended in the entombment of architectural compounds, including a remarkable sequence of construction events preceded by the processing and consumption of foodstuffs. There was not a single, large-scale construction event, but several small-scale events that were accompanied by consumption activities. This pattern strongly suggests a permanent reinforcement of ties and commitments through feasting, which was required in order to finish the construction process. This scenario supports the idea of emerging leadership capable of mobilizing labor for the construction requirements. Nevertheless, the reliance on feasting as ritual practices, and the small scale of these events, suggests a limited power capacity and a weakly formalized authority, which needed to be constantly reinforced through the inferred ritual practices. 相似文献
68.
Maria Lucia Refinetti Martins Alvaro Luis dos Santos Pereira 《European Planning Studies》2019,27(6):1129-1145
This article aims to highlight the main arguments that sought to justify the incorporation and legitimization of Urban Regeneration in the urban policy agenda in Brazil. It shows how the convergence between different and even conflicting propositions related to urban development provided ideological support to the construction of discourses in which urban regeneration is portrayed as beneficial to society as a whole, and how recent international ideas on urban development were incorporated in urban policies of contemporary Brazil, considering our local socio-economic and political environment, planning tradition and regulatory frameworks. The focus will be on Rio de Janeiro and particularly São Paulo given the key role these two cities play in defining urban policy paradigms, guiding government agendas and exporting regulatory models to other parts of Brazil. 相似文献
69.
Fernando Guzmán Javier Barros Paola Corti Magdalena Pereira 《Colonial Latin American Review》2019,28(1):81-105
In the baptistery of the church of Santiago de Curahuara de Carangas, built at the end of the 16th century, a complex mural painting program was executed in the last quarter of the 18th century. The present text intends to establish the links between the scenes painted and the rite of baptism. We do not see a direct or evident relationship in a didactical or performative sense. The images are there to be potentially activated during the liturgical ceremony in order to reveal the efficacy of the sacrament. We have the advantage of working with a set of images that remain in their original location. Therefore, this essay proposes a potential relationship among gesture, words and paintings, as they could have been related in the 18th century. In the analysis, we put into dialogue the resonances intended by the Church and the reception by the indigenous community. 相似文献
70.
Marion Klemme Heiner Monheim Rafael Stegen 《Standort - Zeitschrift für angewandte Geographie》2000,24(3):49-53
Im STANDORT 3/1999 haben Heiner Monheim, Maike Schwarte und Christoph Winkelk?tter im Vorfeld des 52. Deutschen Geographentags in Hamburg die Ergebnisse von 60 Expertengespr?chen zum Perspektivenwechsel in
der deutschen Geographie vorgestellt. In dem vorliegenden Beitrag werden diese Befunde durch weitere Prim?r- und Sekund?ranalysen
erg?nzt, die im Rahmen einer Sonderveranstaltung “Zur Lage der Geographie in Deutschland” beim Geographentag vorgestellt und
diskutiert wurden. Die Grundlage bilden Arbeiten von Studierenden der Universit?t Trier im Rahmen eines Forschungspraktikums
und einer Projektstudie. In dem vorliegenden Beitrag wird ein Auszug der wichtigsten Ergebnisse der Studien und der Podiumsdiskussion
in Hamburg vorgestellt. Das Projekt wurde durch die Deutsche Gesellschaft für Geographie mit 5000 DM gef?rdert. Der DVAG hat
die Projekte durch logistische Hilfe bei den Befragungen und durch Gespr?chsbereitschaft bei den Diskussionen aktiv unterstützt. 相似文献