Search results for "urban infrastructure"
showing 5 items of 5 documents
Urban Infrastructure and Euergetism Outside the City of Rome
2015
This chapter explores the connection between the monumentalization of cities, the use of local resources, and the involvement of benefactors in civic building operations. At its peak the Roman Empire comprised a mosaic of some two thousand flourishing cities. For the establishment and maintenance of their infrastructure, they benefited in large part from the contributions of wealthy citizens and, in some situations, of outside sponsors. This chapter uses epigraphic evidence to explain what financial resources cities had at their disposal and who was responsible for benefactions that benefited the communities and their inhabitants. It also discusses the nature of the benefactions and what su…
Evaluating the citywide Edinburgh 20mph speed limit intervention effects on traffic speed and volume: A pre-post observational evaluation.
2021
Objectives Traffic speed is important to public health as it is a major contributory factor to collision risk and casualty severity. 20mph (32km/h) speed limit interventions are an increasingly common approach to address this transport and health challenge, but a more developed evidence base is needed to understand their effects. This study describes the changes in traffic speed and traffic volume in the City of Edinburgh, pre- and 12 months post-implementation of phased city-wide 20mph speed limits from 2016–2018. Methods The City of Edinburgh Council collected speed and volume data across one full week (24 hours a day) pre- and post-20mph speed limits for 66 streets. The pre- and post-sp…
Overland Flow Times of Concentration for Hillslopes of Complex Topography
2016
The time of concentration is an important parameter for predicting peak discharge at the basin outlet and for designing urban infrastructure facilities. In studying the hillslope response, employing hydraulic equations of flow, the shape of the hillslope geometry has often been assumed as rectangular and planar. However, natural hillslopes have complex topographies whose shapes are characterized by irregularly spaced contour lines. Recently, kinematic wave time of concentration has been derived for rectangular and curved parallel hillslopes. This paper extends this work to hillslopes of complex planform geometry, considering the degree of divergence or convergence of the hillslope. The exte…
Salt accumulation and effects within foliage of Tilia × vulgaris trees from the street greenery of Riga, Latvia
2020
International audience; Green infrastructures within sprawling cities provide essential ecosystem services, increasingly undermined by environmental stress. The main objective in this study was to relate the allocation patterns of NaCl contaminants to injury within foliage of lime trees mechanistically and distinguish between the effects of salt and other environmental stressors. Using field material representative of salt contamination levels in the street greenery of Riga, Latvia, the contribution of salt contaminants to structural and ultrastructural injury was analyzed, combining different microscopy techniques. On severely salt-polluted and dystrophic soils, the foliage of street lime …
Projet urbain et Jeux Olympiques: le cas d'Athènes 2004
2005
Beyond the international sporting event they represent, Olympic Games are also a real catalyst for urban change they cause or accelerating. Indeed, they can be seen as an organizational tool, development and equipment of the host cities who have to service all Games a range of sports facilities , transport , accommodation ... that support the effective course of the global event . 2004 marks the return of the Olympic Games on the territory where they were born ; Athens hosted the first games of the third millennium . However, the Greek capital is a framework especially since this ancient city , archaeological and architectural history so rich, is also recent capital and the diachronic prove…