Search results for " renewal."
showing 10 items of 66 documents
Statistics of transitions for Markov chains with periodic forcing
2013
The influence of a time-periodic forcing on stochastic processes can essentially be emphasized in the large time behaviour of their paths. The statistics of transition in a simple Markov chain model permits to quantify this influence. In particular the first Floquet multiplier of the associated generating function can be explicitly computed and related to the equilibrium probability measure of an associated process in higher dimension. An application to the stochastic resonance is presented.
Oxygen-containing polycyclic aromatic hydrocarbons (OPAHs) in urban soils of Bratislava, Slovakia: patterns, relation to PAHs and vertical distributi…
2011
Abstract We determined concentrations, sources, and vertical distribution of OPAHs and PAHs in soils of Bratislava. The ∑14 OPAHs concentrations in surface soil horizons ranged 88–2692 ng g−1 and those of ∑34 PAHs 842–244,870 ng g−1. The concentrations of the ∑9 carbonyl-OPAHs (r = 0.92, p = 0.0001) and the ∑5 hydroxyl-OPAHs (r = 0.73, p = 0.01) correlated significantly with ∑34 PAHs concentrations indicating the close association of OPAHs with parent-PAHs. OPAHs were quantitatively dominated by 9-fluorenone, 9,10-anthraquinone, 1-indanone and benzo[a]anthracene-7,12-dione. At several sites, individual carbonyl-OPAHs had higher concentrations than parent PAHs. The concentration ratios of se…
I modelli urbani della ricostruzione post-sismica degli anni ‘60 a confronto con la contrazione demografica dei territori interni della Sicilia. Caso…
2021
Il contributo prende in esame gli esiti prodotti a lunga distanza dai modelli urbanistici adottati in Italia nel secondo dopoguerra, caratterizzati da dinamiche espansive e dotazioni di servizi pubblici dimensionati in base agli standard. Gli effetti della contrazione demografia su tali modelli insediativi, che dispiegano oggi una serie di problematiche che conducono alla necessità di una riorganizzazione spaziale, vengono osservati su un campione particolarmente significativo al riguardo rappresentato dalle città ricostruite ex-novo nel secondo Novecento a seguito di movimenti tellurici. Il caso in esame riguarda il terremoto della Valle del Belice del 1968 e descrive come le nuove città, …
Compact city: agent-based simulation and sustainability assessment
2013
Proyecto: cámara de conservación de libros para la Biblioteca Histórica de la Universitat de València
2017
Las dificultades para conseguir unas condiciones ambientales óptimas para la conservación de nuestro patrimonio bibliográfico y el elevado consumo energético necesario para mantenerlas han sido algunas de las premisas que nos han llevado a la proyección y realización de esta cámara de conservación. En ella se ha creado un espacio libre de influencia exterior que facilita la obtención de un clima adecuado y estable, con un consumo mínimo de energía, en el que se controlan los principales factores de degradación ambiental: temperatura y humedad precisas y estables, así como un control minucioso de la contaminación atmosférica y biológica; todo ello dirigido a aumentar la esperanza de vida de …
The Fluid City Experience: An Update
2016
This chapter describes the actual status of thirteen European cities that become fluid cities through their strategies for urban regeneration. These cities are divided into three groups: the large port-cities, the medium rank “city-port” cities, the riverfront cities. For every city, we define the status of urban environment and population, the trend for port and airport traffic and the strategies for urban regeneration.
Cilium induction triggers differentiation of glioma stem cells.
2020
Glioblastoma multiforme (GBM) possesses glioma stem cells (GSCs) that promote self-renewal, tumor propagation, and relapse. Understanding the mechanisms of GSCs self-renewal can offer targeted therapeutic interventions. However, insufficient knowledge of GSCs' fundamental biology is a significant bottleneck hindering these efforts. Here, we show that patient-derived GSCs recruit elevated levels of proteins that ensure the temporal cilium disassembly, leading to suppressed ciliogenesis. Depleting the cilia disassembly complex components is sufficient to induce ciliogenesis in a subset of GSCs via relocating platelet-derived growth factor receptor-alpha (PDGFR-α) to a newly induced cilium. Im…
Entrepreneurship in Rural Areas and Sustainable Development - to What Extent Self-Government Activities Support them. A Case Study of Opole Voivodesh…
2020
Entrepreneurship acts as a catalyst for resolving many economic and social issues. It is often seen as the key factor in driving employment rates in rural areas, particularly among young people. It significantly impacts the overall development of the region, including the quality of life. More job opportunities help create employment for a number of people within their own social system. More specifically, it encourages young and well-educated people to stay in village areas which otherwise become increasingly depopulated. This brings us to a problem; to overcome the existing challenges, rural areas must not only drive the development but also ensure its sustainability. Sustainable rural de…
The Fluid City Paradigm : Waterfront Regeneration as an Urban Renewal Strategy
2016
This book presents a new paradigm of knowledge and action with respect to urban waterfronts and the “fluid city paradigm,” explaining its methodological framework and describing an integrated and creative planning approach in which waterfront regeneration is pursued as a key urban-renewal strategy. It focuses especially on the WATERFRONT project (“Water And Territorial policiEs for integRation oF multisectoRial develOpmeNT”), which was funded jointly by Italy and Malta with the goal of developing common guidelines, strategies, and operational tools for the planning of coastal areas, based on cross-border exchange of experiences. In the described approach, the waterfront is recognized as hav…
Estimating finite mixtures of semi-Markov chains: an application to the segmentation of temporal sensory data
2019
Summary In food science, it is of great interest to obtain information about the temporal perception of aliments to create new products, to modify existing products or more generally to understand the mechanisms of perception. Temporal dominance of sensations is a technique to measure temporal perception which consists in choosing sequentially attributes describing a food product over tasting. This work introduces new statistical models based on finite mixtures of semi-Markov chains to describe data collected with the temporal dominance of sensations protocol, allowing different temporal perceptions for a same product within a population. The identifiability of the parameters of such mixtur…