Crescimento (In)Sunstentável-Palestra (in Portuguese).

Na passada 6ª feira, 15 Março 2013, dei uma palestra pública na Escola Secundária Dª Inês de Castro, Alcobaça, enquadrada nas actividades do Agrupamento de Escolas de Cister-Agrup@2013.
Tendo como mote o ano de 2013 como o Ano da Matemática do Planeta Terra, escolhi como tema para a minha palestra, o problema do Crescimento [Económico] (In)Sustentável, como forma de desmistificar um dos assuntos que tem sido muito falado na comunicação social.
O grande erro dos economistas, em geral, passa por assumir que as economias podem crescer eternamente a ritmos rápidos e exponenciais, o que não é verdade, pois os recursos disponíveis para o fazer são finitos, e com o passar do tempo tendem a ser cada vez mais escassos e caros.
Numa das infografias que inclui nos slides, a propósito do aforramento de divisas, verifica-se que as economias que amealham divisas de uma forma rápida a curto prazo, foram também aquelas que experimentam quebras ou abrandamento a longo prazo.
No final, lançei a hipótese do modelo de Selecção Natural de Charles Darwin (1842-1844) ser talvez o melhor modelo para descrever o crescimento económico, tomando como caso base o crescimento exponencial da economia Chinesa-entre 1996-2010-assim como o abrandamento desta de 2010 para cá.
Com base nestes indicadores, devemos colocar a hipótese de existir uma relação causa-efeito entre leis da termodinâmica (petróleo, minerais e recursos naturais) e o crescimento económico (aforramento de divisas). A aparente correlação do preço do barril de brent e o aumento do preço dos alimentos a isso me leva a especular.
Para os interessados, podem fazer download dos slides na hiperligação abaixo. Fico entretanto a aguardar pelas vossas observações e sugestões, ou por e-mail, ou em comentário a esta entrada.
  

ESDICA2013

URL slides: ESDICA2013

Mathematicians aim to take publishers out of publishing

Mathematicians plan to launch a series of free open-access journals that will host their peer-reviewed articles on the preprint server arXiv. The project was publicly revealed yesterday in a blog post by Tim Gowers, a Fields Medal winner and mathematician at the University of Cambridge, UK.

The initiative, called the Episciences Project, hopes to show that researchers can organize the peer review and publication of their work at minimal cost, without involving commercial publishers.

“It’s a global vision of how the research community should work: we want to offer an alternative to traditional mathematics journals,” says Jean-Pierre Demailly, a mathematician at the University of Grenoble, France, who is a leader in the effort. Backed by funding from the French government, the initiative may launch as early as April, he says.

Many mathematicians — and researchers in other fields — claim that they already do most of the work involved in publishing their research. At no cost, they type up and format their own papers, post them to online servers, join journal editorial boards and review the work of their peers. By creating journals that publish links to peer-reviewed work on servers such as arXiv, Demailly says, the community could run its own publishing system. The extra expense involved would be the cost of maintaining websites and computer equipment, he says.

That cost is not small, but it could eventually be provided in part by the journals’ users. The arXiv server, for example, costs about US$826,000 a year to run, and is funded by the Cornell University Library in Ithaca, New York; the Simons Foundation in New York and institutional members.

Demailly says that he first thought of open-access electronic journals that overlay arXiv eight years ago, but the concept became a reality only last June, when he was contacted by the Centre for Direct Scientific Communication (CCSD), based in Villeurbanne, France. The CCSD, a unit of the French National Centre for Scientific Research, develops open-access repositories such as the multidisciplinary archive HAL, which mirrors the arXiv site.

For the Episciences Project, the CCSD plans to create a publishing platform that will support online peer-reviewed journals. Each journal, or ‘epijournal’, would have its own editor and editorial board, and authors could submit their arXiv-posted papers to their journal of choice. The journal would then organize peer review, perhaps using workflow software provided by the CCSD. Peer-reviewed papers would be posted on arXiv alongside their un-reviewed versions. A central committee (led by Demailly) would manage new journal candidates and make recommendations on paper formatting, but each journal would be free to set its own policies (including whether to charge for publication).

Gowers plans to start a journal in the interdisciplinary field of additive combinatorics; Demailly would not say what other early epijournals might be. Gowers has strong views on shaking up research publishing — last year, he kick-started a boycott of the Dutch publishing giant Elsevier (see also Nature’s profile of Gowers).

The idea of overlaying arXiv is not new: some mathematics journals tried it in the early 2000s but scrapped the idea because libraries began dropping print subscriptions, says Demailly. Meanwhile, there are already some free, community-organized mathematics journals, such as Documenta Mathematica, funded by the German Mathematical Society. “They are doing things on their own with a small website; we will have a global platform capable of drastically reducing an individual journal’s administration costs,” Demailly says.

Demailly says that he expects to adjust the concept with feedback from the mathematics community. “If people want larger reviews linked to papers, or the possibility of online comments and blogs, we can offer this with only minor changes to the platform,” he says. At the moment, the model’s success or failure hinges on buy-in from mathematicians — but the involvement of Gowers and other prominent mathematicians, such as Terence Tao of the University of California, Los Angeles, may help to build support.

Nature

doi:10.1038/nature.2013.12243

Source: http://www.nature.com/news/mathematicians-aim-to-take-publishers-out-of-publishing-1.12243

Away from the office.

Dear Sir/Madam

From January 17 2013 till February 8 2013, I will be away from office  and from the country in a research guest stay to Instituto de Matemática, Estatística e Computação Científica, Universidade Estadual de Campinhas, Brazil.

If you have further urgency in contact me, use the code number (+351), whenever you want to call me by mobile or alternatively, send me your e-mail correspondence to nelsonDOTfaustinoATymailDOTcom.

Many thanks for your understanding.

Kind regards,

Nelson José Rodrigues Faustino

BTW. Replace “DOT” by “.” and “AT” by “@” on “nelsonDOTfaustinoATymailDOTcom”.

Ausente de 17 Janeiro a 8 Fevereiro.

Exmo(a). Sr.(a).

De 17 Janeiro (5ª feira) a 8 Fevereiro (6ª feira) de 2013, estarei ausente do país em deslocação Científica ao Instituto de Matemática, Estatística e Computação Científica da Universidade Estadual de Campinhas, Brasil.

Na eventualidade de ser necessário entrar em contacto comigo com alguma urgência, use o indicativo (+351), caso tente-me contactar via telemóvel ou envie-me um e-mail para nelsonDOTfaustinoATymailDOTcom.

Grato pela vossa compreensão.

Com os melhores cumprimentos,

Nelson José Rodrigues Faustino

PS: Substituir “DOT” por “.” e “AT” por “@” em “nelsonDOTfaustinoATymailDOTcom”.

CACAA Journal

Clifford Analysis, Clifford Algebras and their Applications (CACAA) publishes high-quality, peer-reviewed original research papers as well as expository and survey articles of exceptional quality within the scope of Clifford Analysis, Clifford algebras, quaternion analysis, and their applications to pure and applied mathematics, physics, and engineering. Articles that interact with related fields are welcome, as long as their content is relevant to approximation and wavelet theory, probability, statistics, time frequency analysis and image processing, numerical mathematics, and robotics applications, applications of Clifford Algebras and Clifford Analysis in Quantum Mechanics, applications of Clifford Algebras at human perceptive – cognitive level, applications of Clifford Algebras in nonlinear chaotic deterministic systems, applications of Clifford Algebras in analysis of coding and noncoding sequences of DNA.

The Journal aims to cover the latest outstanding developments in Clifford algebras, Clifford and quaternion analyses, and to explore new connections between different research areas.

CACAA is currently indexed in Current Mathematics Publications, Mathematical Reviews, MathCAD, USSR Academy of Sciences and Zentralblatt fur Mathematic/Mathematics Abstracts/MATH Database

Source: http://www.cliffordanalysis.com/

Announcement of the 18th EIC / anúncio do 18ºEIC

Dear All,

It is with great pleasure that we invite you to attend and participate in the 18th European Intensive Course on Complex Analysis and its Generalizations to be held at the University of Aveiro, Portugal, from March 4 to 15, 2013.
The event will take place at the Department of Mathematics of the University of Aveiro and it is organized with the support of CIDMA (Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Universidade de Aveiro).

This year, the course is devoted to the topics of:

Inverse Problems , Harmonic Analysis, and Representation Theory,

with Lecturers:

Peter Massopust, IBB – Helmholtz Zentrum München / Technische Universität München, Germany
Michael Ruzhansky, Imperial College London, U.K.
John Ryan, University of Arkansas, Fayetteville, U.S.A.

More information is available in http://www2.mat.ua.pt/pceres/complex2013/

Looking forward to meet you.
On behalf of the organizers.

****************************
Caros Colegas,

É com prazer que vos convidamos a assistir e participar no 18º Curso Intensivo Europeu em Análise Complexa e suas Generalizações, o qual se realizará na Universidade de Aveiro, Portugal, de 4 a 15 de Março do corrente ano.

O evento realizar-se-á no Departamento de Matemática da Universidade de Aveiro, sendo organizado com o apoio do CIDMA (Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Universidade de Aveiro).

Este ano, o curso é dedicado aos tópicos de:

Problemas Inversos, Análise Harmónica, e Teoria da Representação

contando com os Oradores:

Peter Massopust, IBB – Helmholtz Zentrum München / Technische Universität München, Germany
Michael Ruzhansky, Imperial College London, U.K.
John Ryan, University of Arkansas, Fayetteville, U.S.A.

Mais informação encontra-se disponível em http://www2.mat.ua.pt/pceres/complex2013/

Esperando ver-vos em breve.
Em nome da organização.