Biogeography of Glandulocaudinae (Teleostei : Characiformes : Characidae) revisited: phylogenetic patterns, historical geology and genetic connectivity

The biogeography of the Glandulocaudinae ( former Glandulocaudini) is reviewed. The major pattern of diversification presented by this group of freshwater fishes can be clearly associated to the main aspects of the tectonic evolution of the southern portion of the Cis-Andean South American Platform. The phylogenetic relationships within the group suggest that the clade represented by Lophiobrycon is the sister-group of the more derived clade represented by the genus Glandulocauda and Mimagoniates. Lophiobrycon and Glandulocauda occur in areas of the ancient crystalline shield of southeastern Brazil and their present allopatric distribution is probably due to relict survival and tectonic vicariant events. Populations of Glandulocauda melanogenys are found in contiguous drainages in presently isolated upper parts of the Tiete, Guaratuba, Itatinga, and Ribeira de Iguape basins and this pattern of distribution is probably the result of river capture caused by tectonic processes that affected a large area in eastern and southeastern Brazil. The species of Mimagoniates are predominantly distributed along the eastern and southeastern coastal areas, but M. microlepis is additionally found in the rio Iguacu and Tibagi basins. Mimagoniates barberi occurs in both SW margin of the upper rio Parana basin and the lower Paraguay and Mimagoniates sp. occurs in the upper Paraguay river basin. Tectonic activations of the Continental Rift of Southeastern Brazil along the eastern margin of the Upper Parana basin promoted population fragmentation responsible of the present day distribution presented by Glandulocauda melanogenys. We hypothesize that occurrence of Mimagoniates along the lowland area around the Parana basin was due to a single or a multiple fragmentation of populations along the W-SW border of the upper Parana Basin, probably due to the major tectonic origin of the Chaco-Pantanal wetland foreland basins since the Miocene as well as Cenozoic tectonic activity along the borders of the upper Parana basin, such as in the eastern Paraguay, in the Asuncion Rift. Distributional pattern of Mimagoniates suggests that its initial diversification may be related to the tectonic evolution of the Chaco-Pantanal foreland basin system and a minimum age of 2.5 M.Y are proposed for this monophyletic group. Previous hypotheses on sea level fluctuations of the late Quaternary as being the main causal mechanism promoting cladogenesis and speciation of the group are critically reviewed. Phylogeographic studies based on molecular data indicate significant differences among the isolated populations of M. microlepis. These findings suggest that a much longer period of time and a paleogeographic landscape configuration of the Brazilian southeastern coastal region explain the present observed phylogenetic and biogeographic patterns.

Brumadoite, a new copper tellurate hydrate, from Brumado, Bahia, Brazil

Brumadoite, ideally Cu(2)Te(6+)O(4)(OH)(4)center dot 5H(2)O, is a new mineral from Pedra Preta mine, Serra das Eguas, Brumado, Bahia, Brazil. It occurs as microcrystalline aggregates both on and, rarely, pseudomorphous after coarse-grained magnesite, associated with mottramite and quartz. Crystals are platy, subhedral, 1-2 mu m in size. Brumadoite is blue (near RHS 114B), has a pale blue streak and a vitreous lustre. It is transparent to translucent and does not fluoresce. The empirical formula is (Cu(2.90)Pb(0.04)Ca(0.01))(Sigma 2.95) (Te(0.93)(6+)Si(0.05))(Sigma 0.98)O(3.92)(OH)(3.84)center dot 5.24H(2)O. Infrared spectra clearly show both (OH) and H(2)O. Microchemical spot tests using a KI Solution show that brumadoite has tellurium in the 6(+) state. The mineral is monoclinic, P2(1)/m or P2(1). Unit-cell parameters refined from X-ray powder data are a 8.629(2) angstrom, b 5.805(2) angstrom, c 7.654(2) angstrom, beta 103.17(2)degrees, V 373.3(2) angstrom(3), Z = 2. The eight strongest X-ray powder-diffraction lines [d in angstrom, (l),(hkl)] are: 8.432,(100),(100); 3.162,(66),((2) over bar 02); 2.385,(27),(220); 2.291,((1) over bar 12),(22); 1.916,(11),(312); 1.666,(14),((4) over bar 22,114); 1.452,(10), (323, 040); 1.450,(10),(422,403). The name is for the type locality, Brumado, Bahia, Brazil. The new mineral species has been approved by the CNMNC (IMA 2008-028).

Generalized solutions of a nonlinear parabolic equation with generalized functions as initial data

In [H. Brezis, A. Friedman, Nonlinear parabolic equations involving measures as initial conditions, J. Math. Pure Appl. (9) (1983) 73-97.] Brezis and Friedman prove that certain nonlinear parabolic equations, with the delta-measure as initial data, have no solution. However in [J.F. Colombeau, M. Langlais, Generalized solutions of nonlinear parabolic equations with distributions as initial conditions, J. Math. Anal. Appl (1990) 186-196.] Colombeau and Langlais prove that these equations have a unique solution even if the delta-measure is substituted by any Colombeau generalized function of compact support. Here we generalize Colombeau and Langlais` result proving that we may take any generalized function as the initial data. Our approach relies on recent algebraic and topological developments of the theory of Colombeau generalized functions and results from [J. Aragona, Colombeau generalized functions on quasi-regular sets, Publ. Math. Debrecen (2006) 371-399.]. (C) 2009 Elsevier Ltd. All rights reserved.

NATURAL TOPOLOGIES ON COLOMBEAU ALGEBRAS

We define intrinsic, natural and metrizable topologies T(Omega), T, T(s,Omega) and T(s) in G(Omega), (K) over bar, G(s)(Omega) and (K) over bar (s) respectively. The topology T(Omega) induces T, T(s,Omega) and T(s). The topologies T(s,Omega) and T(s) coincide with the Scarpalezos sharp topologies.

Dissonant Voices : Philosophy, Children's Literature, and Perfectionist Education

Dissonant Voices has a twofold aspiration. First, it is a philosophical treatment of everyday pedagogical interactions between children and their elders, between teachers and pupils. More specifically it is an exploration of the possibilities to go on with dissonant voices that interrupt established practices – our attunement – in behaviour, practice and thinking. Voices that are incomprehensible or expressions that are unacceptable, morally or otherwise. The text works on a tension between two inclinations: an inclination to wave off, discourage, or change an expression that is unacceptable or unintelligible; and an inclination to be tolerant and accept the dissonant expression as doing something worthwhile, but different. The second aspiration is a philosophical engagement with children’s literature. Reading children’s literature becomes a form of philosophising, a way to explore the complexity of a range of philosophical issues. This turn to literature marks a dissatisfaction with what philosophy can accomplish through argumentation and what philosophy can do with a particular and limited set of concepts for a subject, such as ethics. It is a way to go beyond philosophising as the founding of theories that justify particular responses. The philosophy of dissonance and children’s literature becomes a way to destabilise justifications of our established practices and ways of interacting. The philosophical investigations of dissonance are meant to make manifest the possibilities and risks of engaging in interactions beyond established agreement or attunements. Thinking of the dissonant voice as an expression beyond established practices calls for improvisation. Such improvisations become a perfectionist education where both the child and the elder, the teacher and the student, search for as yet unattained forms of interaction and take responsibility for every word and action of the interaction. The investigation goes through a number of picture books and novels for children such as Harry Potter, Garmann’s Summer, and books by Shaun Tan, Astrid Lindgren and Dr. Seuss as well narratives by J.R.R. Tolkien, Henrik Ibsen, Jane Austen and Henry David Thoreau. These works of fiction are read in conversation with philosophical works of, and inspired by, Ludwig Wittgenstein and Stanley Cavell, their moral perfectionism and ordinary language philosophy.

'In Charge of the Truffula Seeds' : On Children's Literature, Rationality and Children's Voices in Philosophy

In this paper I investigate how philosophy can speak for children and how children can have a voice in philosophy and speak for philosophy. I argue that we should understand children as responsible rational individuals who are involved in their own philosophical inquiries and who can be involved in our own philosophical investigations-not because of their rational abilities, but because we acknowledge them as conversational partners, acknowledge their reasons as reasons, and speak for them as well as let them speak for us and our rational community. In order to argue this I turn, first, to Gareth Matthews' philosophy of childhood and suggest a reconstruction of some of his concepts in line with the philosophy of Stanley Cavell. Second, in order to examine more closely our conceptions of rationality and our pictures of children, I consider the children's books, The Lorax and Where is My Sister? and Henrik Ibsen's play, The Wild Duck.

Ethics in a capitalistic society

The problem of semantics is inherent in any discussion of ethics. The general term "ethics" is itself commonly confused. In addition, systems of ethics must be built upon assumptions, and assumptions are necessarily subject to lengthy debate. These two problems are encountered in my investigation of the ethical practices of the modern business community and to remedy the situation I have taken two steps: the first being an attempt to clarify the meaning of terms used therein;-and the second being a clear description of the assumptions utilized to further my analysis. To satisfy those who would disagree with these assumptions, I have attempted to outline the consequences of differing premises. The first assumption in my discussion is that the capitalistic economy is powered by the motivation supplied by man's self-interest. We are conditioned to basing our courses of action upon an orientation toward gratifying this self-interest. Careers are chosen by blending aptitude, interest, and remuneration. of course, some people are less materially inclined than others, but the average member of our capitalistic society is concerned with the physical rewards derived from his employment. Status and happiness are all-important considerations in pursuing a chosen course of action, yet all too often they are measured in physical terms. The normal self-interest natural to mankind is heightened in capitalism, due to the emphasis placed upon material compensation. Our thinking becomes mechanistic as life devolves into a complex game played by the rules. We are accustomed to performing meaningless or unpleasant duties to fulfill our gratifications. Thought, consequently, interferes with the completion of our everyday routines. We learn quickly not to be outspoken, as the outspoken one threatens the security of his fellow man. The majority of the people are quite willing to accept others views on morality, and indeed this is the sensible thing to do as one does not risk his own neck. The unfortunate consequence of this situation has been the substitution of the legal and jural for the moral and ethical. Our actions are guided by legal considerations and nowhere has this been more evident than in the business community. The large legal departments of modern corporations devote full time to inspecting the legality of corporate actions. The business community has become preoccupied with the law, yet this is necessarily so. Complex, modern, capitalistic society demands an elaborate framework of rules and regulations. Without this framework it would be impossible to have an orderly economy, to say nothing of protecting the best interests of the people. However, the inherent complexities, contradictions, and sometimes unfair aspects of our legal system can tempt men to take things into their own hands. From time to time cases arise where men have broken laws while acting in good faith, and other cases where men have been extremely unethical without being illegal. Examples such as these foster the growth of cynicism, and generally create an antagonistic attitude toward the law on the part of business. My second assumption is that the public, on the whole, has adopted an apathetic attitude toward business morality. when faced with an ethical problem, far too many people choose to cynically assume that, if I don't do it someone else will. "The danger of such an assumption lies in that it eliminates many of the inhibitions that normally would preclude unethical action. The preventative factor in contemplating an unethical act not only lies in it going against the "right course of action", but also in that it would display the actor as one of the few, immoral practitioners. However, if the contemplator feels that many other people follow the same course of action, he would not feel himself to be so conspicuous. These two assumptions underly my entire discussion of modern business ethics., and in my judgment are the two most important causal factors in unethical acts perpetrated by the business community. The future elimination of these factors seems improbable, if not futile, yet there is no reason to consider things worse than they ever have been before. The heightened public interest in business morality undoubtedly lies in part in the fact that examples of corporate malpractice are of such magnitude in scope, and hence more newsworthy.

Abordagem baseada em conceitos para descoberta de conhecimento em textos

Esta tese apresenta uma abordagem baseada em conceitos para realizar descoberta de conhecimento em textos (KDT). A proposta é identificar características de alto nível em textos na forma de conceitos, para depois realizar a mineração de padrões sobre estes conceitos. Ao invés de aplicar técnicas de mineração sobre palavras ou dados estruturados extraídos de textos, a abordagem explora conceitos identificados nos textos. A idéia é analisar o conhecimento codificado em textos num nível acima das palavras, ou seja, não analisando somente os termos e expressões presentes nos textos, mas seu significado em relação aos fenômenos da realidade (pessoas, objetos, entidades, eventos e situações do mundo real). Conceitos identificam melhor o conteúdo dos textos e servem melhor que palavras para representar os fenômenos. Assim, os conceitos agem como recursos meta-lingüísticos para análise de textos e descoberta de conhecimento. Por exemplo, no caso de textos de psiquiatria, os conceitos permitiram investigar características importantes dos pacientes, tais como sintomas, sinais e comportamentos. Isto permite explorar o conhecimento disponível em textos num nível mais próximo da realidade, minimizando o problema do vocabulário e facilitando o processo de aquisição de conhecimento. O principal objetivo desta tese é demonstrar a adequação de uma abordagem baseada em conceitos para descobrir conhecimento em textos e confirmar a hipótese de que este tipo de abordagem tem vantagens sobre abordagens baseadas em palavras. Para tanto, foram definidas estratégias para identificação dos conceitos nos textos e para mineração de padrões sobre estes conceitos. Diferentes métodos foram avaliados para estes dois processos. Ferramentas automatizadas foram empregadas para aplicar a abordagem proposta em estudos de casos. Diferentes experimentos foram realizados para demonstrar que a abordagem é viável e apresenta vantagens sobre os métodos baseados em palavras. Avaliações objetivas e subjetivas foram conduzidas para confirmar que o conhecimento descoberto era de qualidade. Também foi investigada a possibilidade de se realizar descobertas proativas, quando não se tem hipóteses iniciais. Os casos estudados apontam as várias aplicações práticas desta abordagem. Pode-se concluir que a principal aplicação da abordagem é permitir análises qualitativa e quantitativa de coleções textuais. Conceitos podem ser identificados nos textos e suas distribuições e relações podem ser analisadas para um melhor entendimento do conteúdo presente nos textos e, conseqüentemente, um melhor entendimento do conhecimento do domínio.

Assorted topics in monetary economics

Esta tese é uma coleção de quatro artigos em economia monetária escritos sob a supervisão do Professor Rubens Penha Cysne. O primeiro desses artigos calcula o viés presente em medidas do custo de bem-estar da inflação devido a não se levar em conta o potencial substitutivo de moedas que rendem juros, como depósitos bancários.[1] O segundo se concentra na questão teórica de se comparar os escopos dos tradicionais modelos money-in-the-utility-function e shopping-time através do estudo das propriedades das curvas de demanda que eles geram.[2] O terceiro desses trabalhos revisita um artigo clássico de Stanley Fischer sobre a correlação entre a taxa de crescimento da oferta monetária e a taxa de acumulação de capital no caminho de transição.[3] Finalmente, o quarto diz respeito à posição relativa de cada uma de seis medidas do custo de bem-estar da inflação (uma das quais é nova) em relação às outras cinco, e uma estimativa do erro relativo máximo em que o pesquisador pode incorrer devido a sua escolha de empregar uma dessas medidas qualquer vis-à-vis as outras.[4] This thesis collects four papers on monetary economics written under the supervision of Professor Rubens Penha Cysne. The first of these papers assesses the bias occuring in welfare-cost-of-inflation measures due to failing to take into consideration the substitution potential of interest-bearing monies such as bank deposits.[1] The second one tackles the theoretical issue of comparing the generality of the money-in-the-utility-function- and the shopping-time models by studying the properties of the demand curves they generate.[2] The third of these works revisits a classic paper by Stanley Fischer on the correlation between the growth rate of money supply and the rate of capital accumulation on the transition path.[3] Finally, the fourth one concerns the relative standing of each one of six measures of the welfare cost of inflation (one of which is new) with respect to the other five, and an estimate of the maximum relative error one can incur by choosing to employ a particular welfare measure in place of the others.[4] [1] Cysne, R.P., Turchick, D., 2010. Welfare costs of inflation when interest-bearing deposits are disregarded: A calculation of the bias. Journal of Economic Dynamics and Control 34, 1015-1030. [2] Cysne, R.P., Turchick, D., 2009. On the integrability of money-demand functions by the Sidrauski and the shopping-time models. Journal of Banking & Finance 33, 1555-1562. [3] Cysne, R.P., Turchick, D., 2010. Money supply and capital accumulation on the transition path revisited. Journal of Money, Credit and Banking 42, 1173-1184. [4] Cysne, R.P., Turchick, D., 2011. An ordering of measures of the welfare cost of inflation in economies with interest-bearing deposits. Macroeconomic Dynamics, forthcoming.