Search results for "Modelli"

Common Bottlenose Dolphin Protection and Sustainable Boating: Species Distribution Modeling for Effective Coastal Planning

2020

Indicators for preserving marine biodiversity include knowledge of how the spatial distribution and critical habitats of species overlap with human activities and impacts. Such indicators are key tools for marine spatial planning, a process that identifies and resolves conflicts between human uses and the conservation of marine environments. The common bottlenose dolphin in the Mediterranean Sea is considered a vulnerable species by the IUCN Red List and a priority species of the EU Habitat Directive. Here, we estimated spatio-temporal patterns of the species occurrence in the area around one Marine Protected Area (MPA) and two Sites of Community Importance (SCI) of the North western Sardin…

The Windy clustered prize-collecting arc-routing problem

2011

This paper introduces the windy clustered prize-collecting arc-routing problem. It is an arc-routing problem where each demand edge is associated with a profit that is collected once if the edge is serviced, independent of the number of times the edge is traversed. It is further required that if a demand edge is serviced, then all the demand edges of its component are also serviced. A mathematical programming formulation is given and some polyhedral results including several facet-defining and valid inequalities are presented. The separation problem for the different families of inequalities is studied. Numerical results from computational experiments are analyzed. © 2011 INFORMS.

la riabilitazione psichiatrica e psicosociale nell'organizzazione del DSM

2007

Modelling distribution and habitat preferences of vulnerable species

2011

Prostituzione. Aporie e tabù di un nuovo diritto penale tutorio

2018

Molteplici sono le forme attraverso le quali la prostituzione può essere esercitata e plurimi sono i suoi modelli normativi di regolamentazione: tradizionalmente, si contendono il campo il proibizionismo, il regolamentarismo e l’abolizionismo; più di recente la c.d. decriminalizzazione e il c.d. neo-proibizionismo. In questo volume, dopo una breve disamina delle possibili forme e dei plurimi significati della prostituzione, ci si sofferma preliminarmente su alcuni ordinamenti-tipo che presentano caratteristiche peculiari ora dell’uno ora dell’altro dei modelli normativi attuabili, tenendo conto anche di recenti e significative sentenze di talune Corti supreme in ordinamenti di tipo abolizio…

Data from: A mechanistic underpinning for sigmoid dose-dependent infection

2016

Theoretical models of environmentally transmitted diseases often assume that transmission is a constant process, which scales linearly with pathogen dose. Here we question the applicability of such an assumption and propose a sigmoidal form for the pathogens infectivity response. In our formulation, this response arises under two assumptions: 1) multiple invasion events are required for a successful pathogen infection and 2) the host invasion state is reversible. The first assumption reduces pathogen infection rates at low pathogen doses, while the second assumption, due to host immune function, leads to a saturating infection rate at high doses. The derived pathogen dose:infection rate -re…

Data from: Transparency reduces predator detection in mimetic clearwing butterflies

2019

1. Predation is an important selective pressure and some prey have evolved conspicuous warning signals that advertise unpalatability (i.e. aposematism) as an antipredator defence. Conspicuous colour patterns have been shown effective as warning signals, by promoting predator learning and memory. Unexpectedly, some butterfly species from the unpalatable tribe Ithomiini possess transparent wings, a feature rare on land but common in water, known to reduce predator detection. 2. We tested if transparency of butterfly wings was associated with decreased detectability by predators, by comparing four butterfly species exhibiting different degrees of transparency, ranging from fully opaque to larg…

Data from: Parallel diversifications of Cremastosperma and Mosannona (Annonaceae), tropical rainforest trees tracking Neogene upheaval of South Ameri…

2017

Much of the immense present day biological diversity of Neotropical rainforests originated from the Miocene onwards, a period of geological and ecological upheaval in South America. We assess the impact of the Andean orogeny, drainage of lake Pebas, and closure of the Panama Isthmus on two clades of tropical trees (Cremastosperma, c. 31 spp.; and Mosannona, c. 14 spp.; both Annonaceae). Phylogenetic inference revealed similar patterns of geographically restricted clades and molecular dating showed diversifications in the different areas occurred in parallel, with timing consistent with Andean vicariance and Central American geodispersal. Ecological niche modelling approaches show phylogenet…

I MODELLI INFORMATIZZATI PER L'ARCHITETTURA. LEGGERE DOCUMENTARE COMUNICARE

2007

Il mutare degli apparati di elaborazione del progetto fa sì che il tema della rappresentazione dell'architettura si configuri, oggi, come argomento centrale sia se è finalizzato alle nuove figurazioni contemporanee, sia quando è rivolto alla restituzione di opere esistenti e non realizzate. La presenza, sempre più cospicua, di strumenti informatizzati applicati alla rappresentazione, ha indotto ad un ampliamento delle precipue valenze e dei contenuti della rappresentazione stessa, sempre più intesa nella sua accezione di rappresentazione digitale. Le ricerche tese all'approfondimento delle tematiche che mirano ad ampliare il concetto di rappresentazione tradizionale sono state determinanti …

II ADVANCED COURSE Innovative wastewater treatment and mathematical modeling

2017

Over the past years, the knowledge and understanding of biological wastewater treatment has advanced extensively and moved away from empirically-based approaches to a fundamentally-based 'first principles' approach that embrace: bio-chemistry, microbiology, mathematics, and physical, chemical and bioprocess engineering. Also, the wastewater treatment plant of the future will be a water resource recovery facility (WRRF), implying attention for quite different aspects of these large scale technologies. Many of these advances have matured to a degree that they have been codified into mathematical models able to describe and simulate diverse systems under different environmental conditions at e…