201 research outputs found
Veiga Ferreira e a Paleontologia em Portugal
Full text linkThis communication deals with the less known research activities on Palconlology by Octávio da Veiga Ferreira, since just
after he became a member of the staff of the Serviços Geológicos de Portugal. These activities lasted for about 25 years (1951-1975, eventually up to 1987). Besides much field and laboralory work, Veiga Ferreira produced (alone or in collaboration} 38
papers. These concern vertebrates, echinoids, pectens and other molluscs, and malacostraca, as well as some papers of a more general or divulgation character. Studied fossils range from Jurassic to Quaternary, and from continental Portugal to Santa Maria Island (Azores), the Madeira Archipel and Angola.
Veiga Ferreira is author of much valid work. He generously helped others as well.
A bibliography for his paleontological papers is provided
On improving the efficiency of ADER methods
Full text linkThe (modern) arbitrary derivative (ADER) approach is a popular technique for
the numerical solution of differential problems based on iteratively solving an
implicit discretization of their weak formulation. In this work, focusing on an
ODE context, we investigate several strategies to improve this approach. Our
initial emphasis is on the order of accuracy of the method in connection with
the polynomial discretization of the weak formulation. We demonstrate that
precise choices lead to higher-order convergences in comparison to the existing
literature. Then, we put ADER methods into a Deferred Correction (DeC)
formalism. This allows to determine the optimal number of iterations, which is
equal to the formal order of accuracy of the method, and to introduce efficient
-adaptive modifications. These are defined by matching the order of accuracy
achieved and the degree of the polynomial reconstruction at each iteration. We
provide analytical and numerical results, including the stability analysis of
the new modified methods, the investigation of the computational efficiency, an
application to adaptivity and an application to hyperbolic PDEs with a Spectral
Difference (SD) space discretization
DeC and ADER: Similarities, Differences and a Unified Framework
Full text linkIn this paper, we demonstrate that the explicit ADER approach as it is used inter alia in
Zanotti et al. (Comput Fluids 118:204–224, 2015) can be seen as a special interpretation of the
deferred correction (DeC) method as introduced in Dutt et al. (BIT Numer Math 40(2):241–
266, 2000). By using this fact, we are able to embed ADER in a theoretical background of
time integration schemes and prove the relation between the accuracy order and the number
of iterations which are needed to reach the desired order. Next, we extend our investigation to
stiff ODEs, treating these source terms implicitly. Some differences in the interpretation and
implementation can be found. Using DeC yields typically a much simpler implementation,
while ADER benefits from a higher accuracy, at least for our numerical simulations. Then,
we also focus on the PDE case and present common space-time discretizations using DeC
and ADER in closed forms. Finally, in the numerical section we investigate A-stability for
the ADER approach—this is done for the first time up to our knowledge—for different order
using several basis functions and compare them with the DeC ansatz. Then, we compare the
performance of ADER and DeC for stiff and non-stiff ODEs and verify our analysis focusing
on two basic hyperbolic problems
Intermidialidade e remediação em Onde andará Dulce Veiga?, de Caio Fernando Abreu, e Short Movies, de Gonçalo M. Tavares
No full textInternational audienceIn this paper, I analyze contemporary narratives in which cinema is present as an “intermedial reference”. In this regard, I draw on intermediality theories to study the books Onde andará Dulce Veiga? (1990), written by the Brazilian author Caio Fernando Abreu, and Short Movies, by the Portuguese writer Gonçalo M. Tavares. My aim is to investigate some types of exchange between literature and cinema, and to highlight the possible advantages this process brings for both medias.L’objectif de ce travail est d’analyser la présence du cinéma, sous la forme de « référence intermédiale », dans la littérature lusophone contemporaine. Dans ce but, nous étudions les récits Onde andará Dulce Veiga? (1990), de l’écrivain brésilien Caio Fernando Abreu, et Short Movies, du portugais Gonçalo M. Tavares. Nous analysons les échanges entre littérature et cinéma, et nous soulignons les avantages que cela peut apporter aux deux médias.Resumo Neste trabalho, pretende-se analisar narrativas contemporâneas em que o cinema esteja presente, sob a forma de "referência intermidiática". Nesse sentido, são empregadas teorias provenientes dos estudos da intermidialidade para analisar as obras Onde andará Dulce Veiga? (1990), do brasileiro Caio Fernando Abreu, e Short Movies, do português Gonçalo M. Tavares. Espera-se investigar determinadas trocas entre literatura e cinema, apontando possíveis ganhos para ambas as mídias nesse processo
CENAS EXOTÓPICAS NOS CONTOS DE JOSÉ J. VEIGA: EXOTOPICAL SCENES IN THE STORIES OF JOSÉ J. VEIGA
Full text linkRESUMO: O trabalho aqui exposto se constitui como uma análise dos contos: “Os cavalinhos de platiplanto” e “A invernada do sossego” do autor: José J. Veigas. Com base no conceito de exotopia de Mikhail Bakhtin, enfocamos nessa análise as cenas exotópicas presentes em ambos os contos na tentativa de refletirmos sobre como a exotopia – diversas vezes analisada com protagonização de autor-personagem – também pode ser percebida entre personagem-personagem e até mesmo entre personagem e leitor. Neste artigo, além de discutirmos sobre o conceito de exotopia e exemplificarmo-lo a partir de determinadas cenas dos contos, também analisaremos as funções que essas cenas exotópicas exercem nas narrativas.
PALAVRAS-CHAVE: Análise literária. Contos veiganianos. Exotopia.
ABSTRACT: The work presented here constitutes an analysis of the short stories: "Os cavalinhos de platiplanto" and "A invernada do sossego" of the author: José J. Veigas. Based on Mikhail Bakhtin\u27s concept of exotopia, we focus on this analysis the exotopic scenes present in both stories in an attempt to reflect on how the exotopy - sometimes analyzed with author-character protagonism - can also be perceived between character-character and even Even between character and reader. In this article, in addition to discussing the concept of exotopia and exemplifying it from certain scenes of the stories, we will also analyze the functions that these exotopic scenes exert in the narratives.
KEYWORDS: Literary analysis. Veiga\u27s tales. Exotopy
AS REPETIÇÕES NAS NARRATIVAS DE JOSÉ J. VEIGA
No full textIdentificamos, nesta pesquisa, passagens, tipos, situações, temas e imagens que se repetem em
e entre Os cavalinhos de Platiplanto (1988a), A hora dos ruminantes (1988b), A estranha
máquina extraviada (1995), Sombras de reis barbudos (1988c), Os pecados da tribo (1992) e
Aquele mundo de Vasabarros (1983), de José J. Veiga. O objetivo foi apontar a relevância
dessas repetições para o efeito de sentido provocado por seus textos. Constatamos que essas
repetições são reiterações que caracterizam os topoi de suas narrativas. Trabalhamos, ainda,
com o conceito bakhtiniano de dialogismo e definimos intertextualidade, bem como buscamos
abordagens para fundamentar a retextualização aplicada ao estudo da obra de um mesmo
autor.Identified in this study, passages, types, situations, themes and images that recur in and
between the José J. Veiga s narrative texts: Os cavalinhos de Platiplanto (1988a), A hora dos
ruminantes (1988b), A estranha máquina extraviada (1995), Sombras de reis barbudos
(1988c), Os pecados da tribo (1992) e Aquele mundo de Vasabarros (1983). The intent was to
point out the relevance of these repetitions for the effect of meaning caused by their texts.
Thus, we confirmed that these repeats are reiterations that characterize topoi of their
narratives. We work also with the Bakhtinian concept of dialogism and defined intertextuality
and seek approaches to substantiate retextualization applied to study the work of one same
author
Simão da Veiga(1878-1963) : retrospectiva da vida e da obra do pintor
Full text linkCom formação parisiense, Simão da Veiga (1878-1963) foi um pintor naturalista.
O retrato, os animais, as paisagens alentejanas e ribatejanas e a pintura de costumes foram os temas que dominaram o seu percurso artístico.
Apesar de ter sido um pintor profíquo, a sua obra manteve-se quase desconhecida do público em geral, já que muitos dos seus quadros pertencem a colecções privadas, logo não divulgadas.
Também a historiografia se tem mantido lacónica em relação a este autor, sendo pouco o que se escreveu e comentou acerca da sua obra pictórica.
No entanto, tem-se assistido gradualmente a uma redescoberta do seu trabalho e a uma crescente valorização das suas telas, que vão surgindo em casas de coleccionadores, em espaços públicos, e em leilões de arte, ocasionalmente.
A tarefa que nos propomos realizar será, precisamente, a reconstituição e divulgação da obra de Simão da Veiga, ao longo dos seus 84 anos de vida. Desvendar o pintor, compreendê-lo, seguir o seu percurso de artista, tentar perceber onde se inspirou, mostrar e estudar o legado de pintura que nos deixou, serão alguns dos passos para a concretização dessa difícil tarefa.
Em simultâneo, pretende-se valorizar o espólio do pintor que for recolhido (pesquisa e inventariação da obra com criação de fichas técnicas das telas) num objectivo delineado de classificar para valorizar, proteger e salvaguardar o conjunto da obra assim reconstituída; ABSTRACT:Trained in Paris, Simão da Veiga (1878-1963) was a naturalist painter.
Portraits, animals, landscapes of Alentejo and Ribatejo and people’s ways of life were the themes that dominated his artistic career.
Although he was a very productive artist, his work remained almost unknown, as many of his paintings belong to private collections, not available to the general public.
Also, historiography has remained laconic to this author, and little has been written and said about his pictorial work.
However, there has been a gradual interest in his work and a growing appreciation of his painting. Nowadays it can be seen in collector’s homes, public spaces, and occasionally in art auctions.
The goal of this dissertation is the restoration and dissemination of the work of Simão da Veiga, during his 84 years of live: uncovering the painter, understanding him, following his path as an artist, trying to understand what was the object of his inspiration, displaying and studying the legacy of painting he has left us, are some of the steps to achieve this difficult task.
Classifying in order to valorize, protect, and maintaining the whole of the authors work (throw researching and filling as well as creating datasheets) in also the object of concern in this work
Math behind Finetuning and Merging Language Models
Full text linkTo bridge this gap, fine-tuning LMs has become a critical process. By training models on domain-specific datasets or aligning them with specific objectives, organizations can improve their performance, improve accuracy, and ensure ethical considerations in their responses. Fine-tuning allows LMs to adapt to specialized use cases, whether in finance, law, healthcare, or manufacturing, making them more reliable and effective. This report explores the underlying mathematical principles of LMs, model fine-tuning, and certain model merging techniques. Using Microsoft's Phi 2 Model, we finetuned the base model on the Moral Scenarios and Professional Accounting Category of the MMLU Datasets, which a multiple choice task. We reconfigured the model output to answer multiple choice questions. Then, we merged the two fine-tuned models by averaging the weights and a sign-aware merge method. We want to show that finetuning and merging can create a model that specializes in a particular domain. In our case, we want a model that specializes in Moral Scenarios and Professional Accounting.No embargoAcademic Major: Mathematic
Mote, llamas y piedras ausentes: Etnografía de una kalapurca cuseña
No full textLa kalapurca es un plato tradicional andino muy antiguo que se prepara y consume en el norte de Chile, el sur de Bolivia y noroeste argentino. De origen aymara, su nombre deriva de las palabras qala (piedra) y phurk’a (acción de asar). (CERRÓN-PALOMINO, 2006) Esto se debe a que, en la mayoría de los casos, para su cocción se emplean piedras calientes. Sin embargo, existen tantas formas de denominarlo (calapurca, carapulca, calapulcra, pari rucru, entre otras)1 como ingredientes que pueda llevar su receta. Algunas kalapurcas tienen más ingredientes (pueden llevar carne, papa, mote,2 cebolla, yerba buena), otras menos. Las carnes que se utilizan varían de una región a otra, pudiendo ser de llama, alpaca, pollo, cordero; todas ellas desmenuzadas. Debido a la cantidad de ingredientes alóctonos que se le han incorporado, la antropóloga Sonia Montecino (2004) considera que, en la actualidad, se trata de un plato “mestizo” donde se combinan lo ancestral, lo colonial y lo actual. Pero según la autora, hay un elemento fundamental para la cocción que no varía y éstas son las piedras calientes. (Montecino, 2003; 2004; 2007).Fil: Pey, Maria Laura. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Arqueología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Carreras, Jesica Tamara. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto Interdisciplinario Tilcara; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Scraping the web for evidence of price steering
Full text linkThis paper exhibits a study about the practice of price personalisation on e-commerce
websites. With this goal, eleven websites were analysed from three different industries: Fashion
retail, General Retail and Travel. Moreover, to find evidence of this practice, the differentiated
features tested were the device, operating system (OS), browser, and geolocation of the visiting
user. Furthermore, two dimensions of price personalisation were conducted in-depth: price
discrimination and price steering. Finally, summarised research about the existing laws and their
implications is also presented in this report
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