[Dottorcomp] Seminari di Matematica Applicata. Martedì 14 febbraio. Takeshi Fukao. Martina Fischetti e Juan Nicolás Ibáñez

[Stefano Lisini]

Seminari di Matematica Applicata, Dipartimento di Matematica "F. Casorati"
e Istituto del CNR IMATI "E. Magenes" di Pavia.

Martedì 14 febbraio 2023, alle ore 15 precise, presso l'aula Beltrami del
Dipartimento di Matematica,

Takeshi Fukao (Kyoto University of Education)terrà un seminario dal titolo:

On a variational inequality of Bingham and Navier–Stokes type

e alle ore 16 precise

Martina Fischetti and Juan Nicolás Ibáñez (European Commission’s Joint
Research Centre (EC-JRC))
terranno un seminario dal titolo:

Routing over large (public and private) transport networks across Europe:
challenges and opportunities.

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I seminari verranno anche trasmessi in diretta Zoom.

Link Zoom seminario Fukao:
https://us02web.zoom.us/j/87518137128?pwd=eHg2eG9QZUdydFJEU1NESWN5a1lPQT09

Link zoom seminario Fischetti e Ibáñez:
https://us02web.zoom.us/j/83344185446?pwd=RHRGai91RkZQTjg0eEVRMWQ5WXFjZz09

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*Abstract seminario Fukao.*

In this talk, we discuss the well-posedness of the variational inequality
for a fluid dynamics of Bingham and Navier–Stokes type in three dimension.
This kind of problem was treated by Naumann–Wulst (1979), Kato (1993) for
the Bingham fluid, based on the result by Duvaut–Lions (1976). All of them,
the solution makes weak sense in H1, because one could not get the enough
H2- regularity. The problem is formulated the evolution equation governed
by the subdifferential. By discussing the characterization of the
subdifferential, more precisely, the H2-regularity result of the solution
for the variational inequality, the Barbu truncation method works well to
prove the well-posedness. This talk is based on the joint work with
Takahito Kashiwabara, The University of Tokyo.

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*Abstract seminario Fischetti e Ibáñez:*

A well-functioning transport system is not only critical to European
businesses and global supply
chains, and as a rather important economic activity, contributing in the
European Union (EU) to
around 5% of GDP and more than 10 million jobs, but also critical to
guarantee that European
citizens have access to essential services such as education, healthcare,
or employment. This
compounds with the fact that the transport system is relatively hard to
decarbonise, and a sector
that brings many external costs to the society (GHG and pollutant
emissions, noise, road crashes and
congestion). Against this context, the transport sector plays a key role in
one of the main EU policy
priorities under the European Green Deal, the achievement of climate
neutrality by 2050.
The EU mandate includes the monitoring across all Member States of the
deployment and the
evaluation of the performance of both public and private transport
infrastructure. This is used to
inform relevant policy initiatives on issues such as guaranteeing a level
playing field for competition
across transport modes or identifying where funding is most needed to
ensure access to an
affordable and sustainable transport system.
In this talk we will present details of different lines of work in the
European Commission’s Joint
Research Centre (EC-JRC) to support the abovementioned mandate, providing
an overview of some
of the transport-related modelling challenges faced and some of possible
solution methods
proposed. More elaboration will be provided on methodologies developed by
the EC-JRC that focus
on employing comprehensive (EU-wide) data to compute performance and
access-to-opportunities
metrics associated with different modes transport, underlining the network
(graph building and
routing) challenges addressed to compute these metrics with a sufficiently
high level of spatial detail
for the scale of interest (EU-wide).
The discussion will refer to methodologies that exploit routing over large
transport networks, for
both private (road) and public (railways, buses, etc.) means of transport.
On the latter we will
present results from an ongoing collaboration with the Department of
Mathematics of the University
of Pavia on an implementation of an innovative method for fast computation
of all-to-all routing
over large schedule-based network graphs.

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Pagina web dei Seminari di Matematica Applicata
https://matematica.unipv.it/ricerca/cicli-di-seminari/seminari-di-matematica-applicata/
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