Search results for "city."
showing 10 items of 12094 documents
Measuring phenotypes in fluctuating environments
2020
Despite considerable theoretical interest in how the evolution of phenotypic plasticity should be shaped by environmental variability and stochasticity, how individuals actually respond to these aspects of the environment within their own lifetimes remains unclear. We propose that this understanding has been hampered by experimental approaches that expose organisms to fluctuating environments (typically treatments where fluctuations in the environment are cyclical vs. erratic) for a pre‐determined duration, while ensuring that the mean environment over that the entire exposure period is invariable. This approach implicitly assumes that responses to the mean and variance/predictability in th…
Acclimation capacity and rate change through life in the zooplankton Daphnia
2020
When a change in the environment occurs, organisms can maintain an optimal phenotypic state via plastic, reversible changes to their phenotypes. These adjustments, when occurring within a generation, are described as the process of acclimation. While acclimation has been studied for more than half a century, global environmental change has stimulated renewed interest in quantifying variation in the rate and capacity with which this process occurs, particularly among ectothermic organisms. Yet, despite the likely ecological importance of acclimation capacity and rate, how these traits change throughout life among members of the same species is largely unstudied. Here we investigate these rel…
Agrestis cum erudito: scenografie del discorso nell’Apologia di Apuleio
2017
In Apologia Apuleius’s speech shows a rich ‘geography’: private homes, shops, villas and inns are the ingredients of a rhetorical strategy aimed at emphasizing the cultural and ethical distance between accusation and defense. An important role is played by the topical contrast between the country and the city, used to make a strong impact on the public and on the judge and to dismantle and discredit 'a priori' the accusations. In Apologia, therefore, the places are not only the background to the trial but are also conceived as a scenery of the word and as a ‘visual’ instrument to outline the parties involved.
Inhibition of Protein Isoprenylation Impairs Rho-Regulated Early Cellular Response to Genotoxic Stress
2000
Activation of c-Jun N-terminal kinases (JNKs) and nuclear factor-kappaB (NF-kappaB) are early cellular responses to genotoxic stress involved in the regulation of gene expression. Pretreatment of cells with the hydroxymethyl glutaryl-CoA reductase inhibitor lovastatin blocked stimulation of JNK1 activity by UV irradiation and by treatment with the alkylating compound methyl methanesulfonate but did not affect activation of extracellular signal-regulated kinase 2 by UV light. Lovastatin also attenuated UV-induced degradation of the NF-kappaB inhibitor IkappaBalpha. The effects of lovastatin on UV-triggered stimulation of JNK1 as well as on IkappaBalpha degradation were reverted by cotreatmen…
Open Source & Shared Urban Design Platform
2017
Il progetto “ROMA 20-25 Nuovi cicli di vita per la Metropoli”, promosso dall’Assessorato alla Trasformazione Urbana del Comune di Roma e dal MAXXI, Museo Nazionale delle Arti del XXI secolo, ha chiamato ventiquattro scuole di architettura, università italiane e internazionali, a interpretare il presente urbano di Roma e immaginarne il futuro attraverso un workshop internazionale di progettazione e una mostra, coinvolgendo le Unità di Ricerca del PRIN “RE-CYCLE Italy. Nuovi cicli di vita per architetture e infrastrutture della città e del paesaggio”. Il contributo dell'Unità di Ricerca dell’Università di Palermo "Re-forming verso la Agri/FabCity per Roma 20-25" è stata l'occasione per sperim…
Entropic model application to identify cross-sectional flow effect on velocity distribution in a large amplitude meandering channel
2020
Abstract Literature shows the application of the entropy concept in open channels flow. No existing research has been addressed to the application of the entropy concept for evaluating the effect of secondary flow which especially develops in curved channels. The purpose of this paper is to explore the possibility to evaluate the effect of the secondary flow on the stream-wise velocity distribution starting only from the knowledge of the surface velocity and the entropic concept application. The analysis is conducted with the aid of data collected in a large-amplitude meandering laboratory flume for two different values of the width-to-depth ratio. Results show that the location of the maxi…
Road network characterization to understand city evolution
2021
International audience; Cities combine different kind of processes that drive their evolution. It is of a great interest to understand the effects of different kinds of spatial patterns on those processes, to be able to minimize space consumption and optimize mobility and transportation.In this research, we aim to contribute to the understanding of city evolution by a focus on the road network of the Eastern French city of Dijon’s. Firstly, we select three network indicators that can be used to characterize the city structure as it grows. We apply these indicators to Dijon’s historical road networks from 1650 until 2019. Finally, we discuss how we can use computational simulations of city g…
Conversion of existing roundabouts into turbo-roundabouts: case studies from real world, Journal of Civil Engineering and Architecture 6(8)
2012
Compared with roundabouts the main advantages of turbo-roundabouts are the reduction in the number of potential conflicting points and the lower speed of vehicles through the intersection; they both can improve road safety conditions at the junction. Moreover, the physical delimitation among lanes limits the side-by-side accident risk. These aspects make turbo-roundabouts more appropriate than roundabouts when a higher level of safety has to be guaranteed, particularly in presence of relevant pedestrian and two-wheels traffic volumes. The present paper has three main objectives : 1) to discuss general design criteria and functional principles of turbo roundabouts; 2) to give the geometric d…
TURBO-ROUNDABOUT GENERAL DESIGN CRITERIA AND FUNCTIONAL PRINCIPLES: CASE STUDIES FROM REAL WORLD
2010
Compared with usual roundabouts the main advantages of turbo-roundabouts are the reduction in the number of potential conflicting points and the lower speed of passing vehicles through the intersection; they both can improve road safety conditions at the junction. Also, the physical delimitation among lanes limits the side-by-side accident risk. These aspects make turbo-roundabouts more appropriate than roundabouts when a higher level of safety has to be guaranteed, particularly in presence of relevant pedestrian and two-wheels traffic volumes. In a previous paper authors proposed a theoretical approach to evaluate turbo-roundabouts capacity founded on gap acceptance theory. In particular, …
From Scarcity to Abundance : Food Waste Themes and Virtues in Agrarian and Mature Consumer Society
2019
Uusitalo and Takala address the food waste problem as a societal phenomenon and examine ethical virtues, values linked to them and food practices in two different time periods: agrarian society (1885–1917) and mature consumer society (2008–2017), in Finland. They use data from newspapers to uncover how ethical principles can underpin understanding of the food waste phenomenon. The study shows how the virtues adopted by food chain actors guide their practices towards sustainable ways of handling excess food. While societal themes of food waste are changing, virtues and food practices are changing as well, but some deep-rooted societal virtues and values persist. The chapter concludes with re…