The Physics Graduate Program invites everyone to:

Defence of M.Sc. dissertation

 Patrick Antonio Morelo

 ESTUDO DE MODELO BASEADO EM MAPA PARA PÓS-DESPOLARIZAÇÃO PRECOCE CARDÍACA

Defense Commitee

 Prof. Dr. Marcelo Henrique Romano Tragtenberg – (president) – UFSC/FSC

Prof. Dr. Osame Kinouchi Filho – (external member) – DFM/USP-RP

Prof. Dr. Lucas Nicolao – (local member) – UFSC/FSC

Prof. Dr. Emmanuel Gräve de Oliveira – (local member) – UFSC/FSC

Date: 03/March/2017 – friday – Time: 9:00 am – Place: Sala 212 – Auditório do Departamento de Física

The Physics Graduate Program invites everyone to:

 Defense of Doctoral Thesis

 Fábio Rafael Herpich

 Galaxy Retirement Plan: Early-type Galaxies from the Ultraviolet to the Infrared

Defense Committee:

 Prof. Dr. Abilio Mateus Junior – (president) – UFSC/FSC

Prof. Dr. Rogemar André Riffel – (external member) – UFSM

Profª. Drª. Lucimara Pires Martins – (external member) – UCSE

Prof. Dr. Antônio Nemer Kanaan Neto – (membro titular) – UFSC/FSC

Dr. Daniel Ruschel Dutra – (local member) – UFSC/FSC

Dr. Guilherme dos Santos Couto – (local member) – UFSC/FSC

Date: 22/February/2017 – wednesday – Times: 2:30 am – Place: Sala 206 – Departamento de Física

The Physics Graduate Program invites everyone to:

 Defence of M.Sc. dissertation

  Leandro Roza Livramento

 Q-balls e Q-shells Compactas em Modelo Tipo CPN

Defense Commitee

 Prof. Dr. Pawel Klimas – (president) – UFSC/FSC

Prof. Dr. Luiz Agostinho Ferreira – (external member) – IFSC/USP

Prof. Dr. Jeferson de Lima Tomazelli – (local member) – UFSC/FSC

Prof. Dr. Paulo Juliano Liebgott – (local member) – UFSC/FSC

Prof. Dr. Celso de Camargo Barros Junior – (supplementary member) – UFSC/FSC

Date: 21/February/2017 – tuesday – Time: 10:00 am – Place: Sala 212 – Auditório do Departamento de Física

The Physics Graduate Program invites everyone to:

Qualifying Examination for Doctoral Thesis

 William Martarello

 INFLUÊNCIA DO ESPAÇO-TEMPO CURVO NO CÁLCULO DO LIVRE CAMINHO MÉDIO DE NEUTRINOS EM UM GÁS INTERAGENTE

FORMADO POR PRÓTONS, NÊUTRONS E ELÉTRONS

Defense Committee:

Prof. Dr. Celso de Camargo Barros Junior – (president) – UFSC/FSC

Prof. Dr. José Ricardo Marinelli – (local member) – UFSC/FSC

Prof. Dr. Marcus Emmanuel Benghi Pinto – (local member) – UFSC/FSC

Prof. Dr. Luis Guilherme de Carvalho Rego – (local member) – UFSC/FSC

 Date: 22/December/2016 – thursday – Time: 9:00 am – Place: Sala 212 – Auditório do Departamento de Física

THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar: 

Phase transitions and self-organized criticality in networks of stochastic spiking neurons. 

Prof. Dr. Osame Kinouchi

Departamento de Física – FFCLRP – USP

 Abstract:

Phase transitions and critical behavior are crucial issues both in theoretical and experimental neuroscience. We report analytic and computational results about phase transitions and self-organized criticality (SOC) in networks with general stochastic neurons. The stochastic neuron has a firing probability given by a smooth monotonic function Phi(V) of the membrane potential V, rather than a sharp firing threshold. We find that such networks can operate in several dynamic regimes (phases) depending on the average synaptic weight and the shape of the firing function Phi. In particular, we encounter both continuous and discontinuous phase transitions to absorbing states. At the continuous transition critical boundary, neuronal avalanches occur whose distributions of size and duration are given by power laws, as observed in biological neural networks. We also propose and test a new mechanism to produce SOC: the use of dynamic neuronal gains — a form of short-term plasticity probably in the axon initial segment (AIS) — instead of depressing synapses at the dendrites (as previously studied in the literature). The new self-organization mechanism produces a slightly supercritical state, that we called SOSC, in accord to some intuitions of Alan Turing.

Date: 19/December/2016 – (monday) – Place: Sala 212 – Auditório do Departamento de Física- Time: 10h30min

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The Physics Graduate Program invites everyone to:

 Qualifying Examination for Doctoral Thesis

 William Rafael Tavares

 Matéria de quarks e mésons magnetizada sob influência de temperaturas e densidades finitas

Defense Committee:

 Prof. Dr. Sidney dos Santos Avancini – (president) – UFSC/FSC

Prof. Dr. Ricardo Luciano Sonego Farias – (external member) – UFSM

Prof. Dr. Marcus Emmanuel Benghi Pinto – (local member) – UFSC/FSC

Prof. Dr. Celso de Camargo Barros Junior – (local member) – UFSC/FSC

Date: 16/December/2016 – friday – Time: 2:00 pm – Place: Sala 212 – Auditório do Departamento de Física

The Physics Graduate Program invites everyone to:

Qualifying Examination for Doctoral Thesis

 Sérgio Souto Rocha

 ESTRUTURAS DEFORMADAS NA PASTA NUCLEAR 3D NA APROXIMAÇÃO DE THOMAS FERMI

Defense Committee:

Prof. Dr. Sidney dos Santos Avancini – (president) – UFSC/FSC

Prof. Dr. Eduardo Inacio Duzzioni – (external member) – UFSC/FSC

Prof. Dr. José Ricardo Marinelli – (Local member) – UFSC/FSC

Prof. Dr. Celso de Camargo Barros Junior – (local member) – UFSC/FSC

Date: 16/December/2016 – friday – Time: 10:00am – Place: Sala 212 – Auditório do Departamento de Física