25,401 research outputs found
Formulação variacional para o eletromagnetismo e suas aplicações
No full textThe variational calculus is directly related to the energetic modeling of
physical systems in general. The advantage of such approach in relation to
the classical approaches (Newtonians) is that a system can be subdivided in
many sub-systems whose modeling can be simpler than the one of the
whole. As the total energy of a system is the sum of the energy of the parts,
it is possible to obtain a global result from the partial results. Nevertheless,
in the classic methods, based on force, such flexibility does not exist, the
most possible way is to apply the effect superposition method. However,
this method does not apply to non-linear systems. In general, the
engineering applications are always linked to the solution of a set of
descriptive equations of the phenomena. Starting in these equations and
reaching a functional, which represent them, is the inverse problem of the
variational calculus. This paper presents a description of the methods which
have been employed for the solution of this problem. Morever, this paper
generalize the Vainberg theorem, which was the starting point for all these
methods. From this theorem, this paper proposes methods that apply to a
more general class of problems, such as, for example, the variational
formulation of Navier-Stokes equations. This work approaches, principally,
the variational formulation of Maxwell, including the quaternionic
formulation, which takes to the langrangian classic electromagnetic field
added of a complex term, which allows the functional, when varied, to
result in the four Maxwell equations. Finally, the formulation of Maxwell
equations by means of differential forms is presented. The advantage of the
energetic method on the weak formulation is that the former provides
superior and inferior quotes to the numeric solution of the problems.O cálculo variacional está diretamente relacionado à modelagem energética
dos sistemas físicos em geral. A vantagem desta abordagem sobre as
abordagens clássicas (Newtonianas), é que um sistema pode ser
subdividido em vários sub-sistemas cuja modelagem pode ser mais simples
que a do todo. Como a energia total de um sistema é a soma das energias
das partes, é possível obter-se um resultado global a partir dos resultados
parciais. Já nos métodos clássicos, baseados na força, não existe esta
flexibilidade, quando muito é possível a aplicação do método da
superposição de efeitos. Contudo, este método não se aplica aos sistemas
não lineares. Em geral, as aplicações de engenharia estão sempre ligadas à
solução de um conjunto de equações descritivas dos fenômenos. Partir
dessas equações e chegar a um funcional, que as represente, é o problema
inverso do cálculo variacional. Este trabalho apresenta uma descrição dos
métodos que têm sido empregados para a solução deste problema, bem
como generaliza o teorema de Vainberg, que foi o ponto de partida para
todos esses métodos. A partir desse teorema este trabalho propõe métodos
que se aplicam a uma classe mais geral de problemas, como por exemplo a
formulação variacional das equações de Navier-Stokes. Este trabalho
aborda, principalmente, a formulação variacional das equações de
Maxwell, inclusive a formulação quaterniônica, que conduz ao lagrangeano
eletromagnético clássico acrescido de um termo complexo, o qual permite
que o funcional ao ser variado resulte nas quatro equações de Maxwell.
Finalmente apresenta-se a formulação das equações de Maxwell por
intermédio de formas diferenciais. A vantagem do método energético sobre
a formulação fraca é que o primeiro fornece cotas superior e inferior para a
solução numérica dos problemas
Aspectos históricos e psicanalíticos na Tetralogia Lusitana de Almeida Faria
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2011A presente dissertação privilegia o estudo da interlocução entre Literatura, História e Psicanálise no contexto do romance português contemporâneo. No âmbito da "Tetralogia Lusitana" de Almeida Faria composta pelos romances A paixão (1965), Cortes (1978), Lusitânia (1980) e Cavaleiro Andante (1983) , investigamos como a História Portuguesa mais recente, marcada pelos processos pré e pós-Revolução dos Cravos, comparece nessas narrativas de modo a fomentar aquilo que Linda Hutcheon concebe como metaficção historiográfica. Neste sentido, analisamos as questões contidas em sua obra Poética do Pós-Modernismo (1991), que nos serviram de norte para pensar como Almeida Faria reinventa a História Portuguesa na economia ficcional dos seus romances. Para abordar a relação entre a Tetralogia Lusitana e a psicanálise, utilizamos o pensamento de Freud e de estudiosos envolvidos na crítica literária psicanalítica, para que pudéssemos refletir como o parricídio, o signo da morte, o luto, a melancolia e os sonhos das personagens podem ser lidos na esfera familiar do clã do Alentejo como uma alegoria dos acontecimentos políticos marcados pela queda de Salazar. Além disso, demonstramos que o evento da morte do pai é o ponto nevrálgico onde convergem os discursos da História e da Psicanálise, a partir da atuação de personagens dispersas que se comunicam, segundo a pesquisadora Lilian Jacoto (2005), por meio de uma poética das distâncias.This dissertation focuses on the study of interactions between Literature, History and Psychoanalysis in the context of contemporary portuguese novel. Under the "Tetralogia Lusitana" by Almeida Faria composed of the novels A Paixão (1965), Cortes (1978), Lusitânia (1980) e Cavaleiro Andante (1983) we investigate how the most recent Portuguese History, which was marked by the processes before and after the Carnation Revolution, appears in these narratives in order to foster what Linda Hutcheon sees as historiographic metafiction. In this sense, we analyzed the issues contained in his work Poetics of Postmodernism (1991), which orientated us to think as Almeida Faria reinvents the Portuguese History in economy fictional of his novels. To deal with the relationship between Psychoanalysis and Tetralogia Lusitana, we use the thinking of Freud and scholars involved in psychoanalytic literary criticism to reflect how the parricide, the sign of death, mourning, melancholia, and dreams of characters can be read at the family level of the clan of Alentejo as an allegory of political events marked by the fall of Salazar. Furthermore, we demonstrate that the event of death of the father is the critical point where all speeches of the History and Psychoanalysis converge, from the actions of the characters that are far apart but can communicate among themselves, according to esearcher Lilian Jacoto (2005), through some kind of poetic of distances
Use of Factorial Designs and the Response Surface Methodology to Optimize a Heat Staking Process
No full textMade available in DSpace on 2019-09-12T16:53:30Z (GMT). No. of bitstreams: 0
Previous issue date: 2018Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)The demand from the automotive industry for lighter and more resistant structures produced at lower costs has shifted the development focus of production processes toward hybrid components. A problem that arises from hybrid components is the necessity to join dissimilar materials, e.g., polymers and metals. A method to achieve this joining involves a process known as heat staking, in which a metal insert is heated and pushed against a thermoplastic surface. At the end of this process, the metal component may not be level with the thermoplastic surface; rather, it may be over flushed, and this discrepancy is known as the Insertion Height. This paper aims to apply the design of experiments and the response surface methodology to develop a model for the Insertion Height, considering the Heating Temperature and the Insertion Time as independent variables. The experiments revealed that the Insertion Height is most affected by the Heating Temperature. There are several combinations of the factors that can keep the Insertion Height within the specifications; therefore, it is possible to increase productivity by decreasing the Insertion Time and to save energy by reducing the Heating Temperature while considering the process constraints and specifications.[Neto, Antonio Faria; Branco Costa, Antonio Fernando] Sao Paulo State Univ UNESP, Sch Engn, Av Dr Ariberto Pereira Cunha 333, BR-12516410 Guaratingueta, SP, Brazil[Neto, Antonio Faria; de Lima, Michel Floriano] Universidade de Taubaté (Unitau) Unitau, Profess Masters Degree Program, R Daniel Danelli S-N, BR-12060440 Taubate, SP, Brazi
Dr. Antonio Januario e Faria
No full textDIMENSÕES:
Altura: 0,64 m / Largura: 0,53 m
TÉCNICA:
Óleo sobre tela.
LOCALIZAÇÃO ATUAL:
Sala dos Diretores, 1º andar, Memorial da Faculdade de Medicina - UFBA (Pelourinho)
DADOS BIOGRÁFICOS DO RETRATADO:
Antonio Januario e Faria foi diretor da Faculdade de Medicina de (1874 - 1881).
OBSERVAÇÕES GERAIS:
Obra já restaurada, com bom estado de conservação
El col·lapse del corrent atlàntic faria Europa inhabitable
No full textHa saltat l'alerta davant el possible col·lapse del corrent oceànic de l'Atlàntic. Un nou estudi científic assenyala que el col·lapse es pot produir molt abans del que s'esperava, amb greus efectes climàtics. En parlem amb Antonio Turiel, físic del CSIC i divulgador científic, que assegura que afectaria uns 3.000 milions de persone
“Searching for order at all levels”. Antonio Lima-de-Faria (July 4, 1921 – December 27, 2023)
No full textProfessor Antonio Lima-de-Faria was our friend and, in a sense, a teacher. Despite our different fields of study, this master of scientific thought has deeply influenced both of us.
Dr. Stefano Serafini came to know the work of Antonio Lima-de-Faria when he was just a teenager thanks to a disseminative article by the late Italian geneticist, Giuseppe Sermonti. Lima-de-Faria’s elegant vision of a universal order at all levels of nature opened his eyes to the consistency of patterns, forms, and function throughout the mineral, vegetable, and animal realms – a concept that has influenced his work in urban studies.
Prof. Tatyana Turova met Antonio Lima-de-Faria on a museum tour of the Royal Physiographic Society (Lund). He was 95. When Antonio came to know that she is a mathematician working in probability, the discussion went straight to a critical analysis of the concept of randomness. That conversation kept going over the years.
Professor Emeritus of Molecular Cytogenetics at Lund University (Sweden), Antonio Lima-de-Faria was a scientist of rare character. He had the innate gift of courage and the ability to tackle big problems despite dominant opinions. He was rigorous and tenacious in his method, and he had an immense knowledge and a sharp rationality.
Antonio Lima-de-Faria defined himself as “a surviving dinosaur” to both of us. He was a magnificent old man – but that “dinosaur” had been ahead of his time since the beginning of his career. This was a constant. In the early 1960s, a multinational company discreetly requested him to develop a futuristic agrifood bioengineering program. This is the current reality of the genetically modified organism.
Known to the scientific world as a pioneer and one of the most relevant exponents of molecular cytogenetics (his 1969 Handbook of Molecular Cytology is a classic) – not to mention author of over 200 research articles and influencing monographs – Lima-de-Faria became a member of some of the world’s top scientific societies. He also taught in some of the most prestigious universities. He received awards and recognition for his extraordinary activity. These included the appointment as Knight of the Order of the North Star by the Swedish King and as Great Official of the Order of Santiago by the President of Portugal. He held scientific consultancy positions for governments and institutions, including the European Space Agency, the United Nations Educational, Scientific and Cultural Organization, and the World Bank Group. He never stopped working and studying. In fact, he focused on the molecular organization of the chromosome until the end of his long life.
Despite all of this, his endeavor was not always understood. His famous book, Evolution without Selection: Form and Function by Autoevolution (Elsevier, 1988, translated into Russian, Japanese, and Italian) is not only fundamental and revolutionary but also a case of sociology of science. This book, which advanced the current trend in molecular biology, even branded him as anti-evolutionist. Such a tag limited the essence of his work to a mere attack against natural selection – “a parlor game to explain life,” as Giuseppe Sermonti would say.
Rather, this treatise, based on his vast physical, chemical, crystallographic, botanical, and zoological expertise, proposed to overcome the concept of natural selection. It downsized the role of genes and chromosomes in the architecture of living things through a plethora of biological forms that came directly from physical constraints. His self-evolutionism united the biological and inorganic worlds. This echoed Aristotelian and Goethean intuitions of morphofunctional homologies, that is, a sort of “non-genic kinship” between the spin of the ultramicroscopic electron, the shell of a Limnaea, and the spirals of immense galaxies.
Indeed, selectionism (identifying natural selection not as a contributing cause but as the main engine of biological development) is the major methodological obstacle to the recognition and explanation of Lima-de-Faria’s morphofunctional homology. This is the true protagonist of his book. An order crosses and defines the subatomic, chemical, and physical worlds on all of their scales through progressive and deterministic channels. The form of Chitoniscus feedjeanus, traditionally explained as a classic example of the mimetic imitation of leaves, has a precedent in the arrangement of the crystals of pure bismuth. The same structure appears in the patterns of chlorite crystals, several vegetal hooks, the shells of ancient ammonites, or goat horns. The bird’s-eye-view of an estuary, the branches of a tree, and the vascularization of a mammal follow a single dendritic development pattern – so much so that their images, once reduced to the same size, are difficult to distinguish. Constant chemical commonalities actually underlie these and countless, more apparent natural oddities. Now, selection is not only powerless to account for them but also logically incompatible with any attempt to explain them. Like all strong theoretical systems faced with a fact that is refractory to integration, selectionism ignores homology. And when it cannot help but deal with it, it defines it as mere analogy. This then relegates it to that metaphor of annihilation, which is accidentality.
Therefore, demolishing selectionism in biology was the necessary premise for developing a theory of self-evolution, towards which Lima-de-Faria has led us with a firm, methodical hand. Indeed, he deploys a set of images and observations that are rarely rivalled in modern scientific literature.
Beyond classic studies on the subject, from D’Arcy Thompson (On Growth and Form, 1917) onwards, there is no doubt that recent molecular biology has continued to confirm with ever greater evidence the importance of elements that are complementary to classical theoretical genetics in the formation of living organisms. Lima-de-Faria had already begun to indicate and systematize these elements 40 years ago in Molecular Evolution and Organization of the Chromosome (1983). In fact, as the author himself recalled, Evolution without Selection is the consequence of those premises once applied to evolutionism.
The last writing of Antonio Lima-de-Faria, printed in this very issue of Caryologia, develops and complements his marvelous treatise Praise of Chromosome “Folly”: Confessions of an Untamed Molecular Structure (2008). This masterpiece continues the great tradition of scientific giants such as Schrödinger and Feynman (authors that Antonio Lima-de-Faria highly regarded) talking to the public about the most advanced theories in a clear way. It is written with such wit and humor and such an elegant reference to art that any reader with a natural sciences or mathematics background, having read the first sentence, will not stop until the last. The book summarizes results on chromosome research and offers directions and ideas for further studies. It clearly confirms that understanding evolution requires a deep knowledge in not only chemistry and physics, but also mathematics – especially when it comes to the atomic level.
Long discussions with Antonio Lima-de-Faria of one the authors began soon after Molecular Origins of Brain and Body Geometry: Plato’s Concept of Reality is Reversed (2014) was published. In an intriguing manner, this work unveils and explains the emergence of body patterns in animals by tracing them to the origin of the brain. For Antonio Lima-de-Faria, “geometry” manifests an “utter simplicity coupled to rigorous order that underlines the phenomenon.” He does not use the language of mathematics, as he was not trained in it. However – even if this may sound paradoxical for a non-mathematician – his search for order, for “a common denominator”, for a unifying theory, make them akin to fundamental mathematics.
Remarkably, already in his early nineties, Antonio Lima-de-Faria completed an extensive analysis of the structures and functions of living organisms on a molecular level. He then created a new book, Periodic Tables Unifying Living Organisms at the Molecular Level: The Predictive Power of the Law of Periodicity (2017). This truly fascinating work provides a new perspective on the relations between matter and energy. Its logical systematic approach links different levels, from atoms to macromolecules to organisms.
As Lima-de-Faria stated, his books do not give ultimate answers and immediate solutions to the posed questions. On the other hand, readers are invited to use the tools, methods, and ideas that he generously expressed in his late works. “Order allows variation but imposes in the same time a canalization that is patent in what we call evolution, being that of galaxies or of living organisms.”
Antonio Lima-de-Faria was almost 100 years old when he released his last book, Science and Art are Based on the Same Principles and Values (2020) – something he had thought about “for 30 years.” It was his scientific testament, encompassing his life-long love for art, beauty, and truth. There, as a “lonely wolf howling in the immensity of the night,” he launched a straightforward warning:
“At present a wave of obscurantism is spreading over Western countries affecting both science and art in a deadly way. (…) Modern technology has been most successful in transforming our daily lives and in allowing us to conquer outer space. These impressive achievements have, to a large extent, made us dumb, making it difficult to perceive the danger that lies ahead. Hence, there is a pressing need to bring forward the original sources in which, leading scientists and renowned artists, explained the principles that they followed in their discovery of novel phenomena and in the creation of unique works of art. It turns out that both types of minds speak the same language. There is a basic denominator that unites the human endeavor.”
Lima-de-Faria’s works are jewels for scientific and aesthetic minds. The beauty of Nature absorbed him completely, and he devoted himself passionately to it. He was an admirer and a true connoisseur of the arts, music, and ballet. He was a passionate gardener and loved roses and the fragrance of flowers. Antonio Lima-de-Faria was a man of enlightenment, dedication, will, and truth. With his gentle and generous attitude towards anyone around him, Antonio Lima-de-Faria radiated love. He knew what happiness is (“What is Happiness?”, Journal of Biourbanism, IX, 2021).
Antonio Lima-de-Faria is an endless source of inspiration and admiration for us
O krausismo em Francisco Machado de Faria e Maia
No full textA crítica de Faria e Maia à conceção eclética de Ferrer Neto Paiva e à dos seus sucessores irá servir-nos de condutor para procurar compreender o seu pensamento sobre o fundamento do direito, em que, apoiado na conceção de Kant, se distancia da solução krausista de índole jusnaturalista dos mestres da Faculdade de Direito.ABSTRACT: Faria e Maia’s critique of the eclectic Conception of Farrer Neto Paiva and his successors will serve as a guide for us to try to understand his thinking on the basis of law, in which, suported by Kant’s Conception, he moves away from Krausist solution of his masters
Declaration of Intention for Antonio Franchihtti
No full textDeclaration of Intention to become a citizen of the United States, as filled out and signed by Antonio Franchitti. Applicant lists himself as a 47 year old farmer residing in Hammonton, New Jersey, born in Campombosso, Italy on 18 April 1870, who sailed on the US bound vessel Britania. Declaration submitted and sworn April 21, 1917
The role of educative thought in the life and work of Antonio Gramsci
No full textMany philosophers have propounded a vision of an improved society, what distinguishes Antonio Gramsci is his continuous effort to make it happen by understanding the process in order to put into practice. Gramsci's conviction about the importance of educative development came from both theory and experience. While there has been considerable examination of Gramsci's work in relation to the Prison Notebooks, this study will seek to address a lacuna in Gramsci scholarship. Using Gramsci's philological method, I analyse Gramsci's pre-prison activity; his pre-prison articles and letters, which, together with his letters from prison, formed part of his educative mission. This educative process was necessary, in order to construct a new party which would develop a collective will, collaboratively, with the masses.In this study therefore, I explore the contexts and formative experiences of the first part of his life together with the intellectual sources from which Gramsci developed his later theories, making central hitherto underemphasised connections between them which informed his writing and ideas. I intend to illustrate that Gramsci's underlying purpose in his writing, and political activity, was not only practical, on how to create a new socialist ruling class, but also educative in forming the mindset and values of his comrades. So that in addition to outlining his vision of a new order, he implicitly guided or explicitly explained the processes by which the necessary changes in social relations and moral climate could be made in order to achieve it. Each person had to engage with the values of the new order so that each could contribute to the construction of a new robust state. It was essential to build a hegemony at the most profound level, one which was dependent on collective understandings and a collective will
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