October 2014 - Random - Mailing list — Dipartimento di Matematica, UniPI

Seminario Roma Tre 8 ottobre
by Pietro Caputo 05 Oct '14

05 Oct '14

Seminario di Probabilita' a Roma Tre Niccolo' Torri (Universite' Lyon 1) Titolo: A stretched-exponential Pinning Model with heavy-tailed Disorder Mercoledi' 08 Ottobre 2014 ORE 14:30 Dipartimento di Matematica e Fisica Universita' degli Studi Roma Tre AULA 311 (SEMINARI) Largo San L. Murialdo,1 Abstract: We study the so-called pinning model, which describes the behavior of a Markov chain interacting with a distinguished state. The interaction depends on an external source of randomness, called disorder, which can attract or repel the Markov chain path. We focus on the case when the disorder is heavy-tailed, with infinite mean, while the return times of the Markov chain have a stretched-exponential distribution. We prove that the set of times at which the Markov chain visits the distinguished state, suitably rescaled, converges in distribution to a limit set, which depends only on the disorder and on the interplay of the parameters. We also show that there exists a random threshold of the interaction strength, below which the limit set is trivial. As a byproduct of our techniques, we improve and complete a result of Auffinger and Louidor on the directed polymer in a random environment with heavy tailed disorder.

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PhD @Lausanne: Forensic statistics
by Giacomo Aletti 04 Oct '14

04 Oct '14

https://applicationsinter.unil.ch/inter/noauth/php/Po/pooffres.php?poid=339… PhD Position Summary: The School of Criminal Justice is seeking an aspiring young scientist to start a PhD research project on probabilistic evaluation of comparative handwriting examinations using graphical models (i.e., Bayesian networks). A Swiss National Science Foundation (SNSF) Grant funds the starting phase of this PhD project during a period of 18 months. Project Summary: The primary objective of this SNSF funded research is to rely on Bayesian networks within a general methodology for structured expert knowledge elicitation and analysis in order to build diagrammatic interpretation structures that have the potential to become part of the scope of resources that forensic experts need to substantiate probabilistic evaluations and conclusions in cases involving the results of comparative handwriting examinations. The appointed PhD candidate in this project will work closely with practising forensic handwriting examiners and conduct both fundamental research on probabilistic interpretation in the context of forensic handwriting examination and in-depth case studies. The project also involves exchanges on methods and approaches with a researcher from the Institute of Evidence Law and Forensic Science of the China University of Political Science and Law, Beijing (CUPL). Application until: December 19th, 2014 -- ------------------------------- Giacomo Aletti, Associate Professor ADAMSS Centre (ex MIRIAM) Advanced Applied Mathematical and Statistical Sciences Department of Mathematics (www.matematica.unimi.it) Via Saldini, 50 20133 Milano, Italy Tel: +39-02-503.16158 Fax:+39-02-503.16090 Cell: +39-340-9739142

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Fwd: Notiziario dei Seminari
by Gustavo Posta 03 Oct '14

03 Oct '14

Begin forwarded message: > ====================================================================== > > DIPARTIMENTO DI MATEMATICA > > UNIVERSITA' DI ROMA "LA SAPIENZA" > > Settimana dal 6 al 12 ottobre 2014 > > ====================================================================== > > > Lunedi' 6 ottobre 2014 > > Ore 16:30, Aula C > Seminario di Probabilità e Fisica Statistica > Marco Ribezzi Crivellari (Universita' di Barcellona) > Experimental measurements of entropy production at the nano-scale: an > application for the 'fluctuation theorems' > > The study of non-equilibrium systems has led to several mathematically > rigorous and general results on the statistics of entropy production > in non-equilibrium systems. These results are generally known under > the name of 'fluctuation theorems' and include the Gallavotti-Cohen > theorem or the Jarzynski equality. My research focuses on performing > experiments in which such results can be tested in real physical > systems. I am interested in assessing their range of validity but even > more interested in exploiting them to develop new measurement > techniques. I will present some recent experiments, in which focused > laser beams (optical tweezers) are used to perform thermodynamic > transformations on single DNA molecules. As a first example I will > show how to use fluctuation theorems to measure the free energy change > across the transformation. As a second example I will discuss how, in > specific cases, fluctuation theorems can be used to measure the full > entropy production in a nano-scale system starting from a partial > measurement through what we call an 'inference' procedure. This last > example provides a new and general application of fluctuation theorems > which we are only beginning to explore.

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BISP9 - 9th Bayesian Inference in Stochastic Processes Workshop
by fabrizio＠mi.imati.cnr.it 02 Oct '14

02 Oct '14

We are glad to announce the 9th workshop on Bayesian Inference in Stochastic Processes (BISP9) which will take place at Point Hotel - Taksim in Istanbul, Turkey, on June 14-16, 2015. The conference web page is http://www.maoner.com/bisp9.htm We are currently working on the programme: confirmed speakers are Sylvia Fruhwirth-Schnatter, Antonio Pievatolo, Raquel Prado and Judith Rousseau. After a reception on June 14th, there will be two full days of talks by (senior and junior) invited speakers and contributors, ending with a dinner cruise on Bosphorus on June, 16th. Interested people can stay in Istanbul also in the next few days since there will be, on June, 17th - 19th, GDRR 2015 (4th Symposium on Games and Decisions in Reliability and Risk), with details at http://www.maoner.com/GDRR-2015.htm The workshop is organised by Yeditepe University, in cooperation with CNR IMATI and George Washington University. Details on past BISP workshops can be found at http://www.mi.imati.cnr.it/conferences/BISP8/ People interested in contributing papers should send a title and an abstract by e-mail to maoner(a)yeditepe.edu.tr, before November, 30th, 2014. Poster session is planned only if there will be a very large number of submissions. Instructions on abstract submission are available at http://www.maoner.com/bisp9_submission.htm Decision on acceptance (either as talk or poster) will be notified by December, 15th, 2014. Best regards M. Atilla Oner and Fabrizio Ruggeri Chairs, BISP9 Organising and Scientific Committees -- Fabrizio Ruggeri fabrizio AT mi.imati.cnr.it CNR IMATI tel +39 0223699532 Via Bassini 15 fax +39 0223699538 I-20133 Milano (Italy) www.mi.imati.cnr.it/~fabrizio

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Vacancy at the Brighton & Sussex Medical School
by Enrico Scalas 02 Oct '14

02 Oct '14

Car* collegh*, vi segnalo questo annuncio per un posto di Senior Lecturer in Medical Statistics: http://www.sussex.ac.uk/aboutus/jobs/714 Cordiali saluti, Enrico Scalas

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