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1,039 results on '"SILVEIRA, LUÍS"'

4. NEUROPULS: NEUROmorphic energy-efficient secure accelerators based on Phase change materials aUgmented siLicon photonicS

Author

Pavanello, Fabio, Marchand, Cedric, O'Connor, Ian, Orobtchouk, Regis, Mandorlo, Fabien, Letartre, Xavier, Cueff, Sebastien, Vatajelu, Elena Ioana, Di Natale, Giorgio, Cluzel, Benoit, Coillet, Aurelien, Charbonnier, Benoit, Noe, Pierre, Kavan, Frantisek, Zoldak, Martin, Szaj, Michal, Bienstman, Peter, Van Vaerenbergh, Thomas, Ruhrmair, Ulrich, Flores, Paulo, Silva, Luis Guerra e, Chaves, Ricardo, Silveira, Luis-Miguel, Ceccato, Mariano, Gizopoulos, Dimitris, Papadimitriou, George, Karakostas, Vasileios, Brando, Axel, Cazorla, Francisco J., Canal, Ramon, Closas, Pau, Gusi-Amigo, Adria, Crovetti, Paolo, Carpegna, Alessio, Carmona, Tzamn Melendez, Di Carlo, Stefano, and Savino, Alessandro

Subjects
Computer Science - Hardware Architecture, Electrical Engineering and Systems Science - Signal Processing
Abstract

This special session paper introduces the Horizon Europe NEUROPULS project, which targets the development of secure and energy-efficient RISC-V interfaced neuromorphic accelerators using augmented silicon photonics technology. Our approach aims to develop an augmented silicon photonics platform, an FPGA-powered RISC-V-connected computing platform, and a complete simulation platform to demonstrate the neuromorphic accelerator capabilities. In particular, their main advantages and limitations will be addressed concerning the underpinning technology for each platform. Then, we will discuss three targeted use cases for edge-computing applications: Global National Satellite System (GNSS) anti-jamming, autonomous driving, and anomaly detection in edge devices. Finally, we will address the reliability and security aspects of the stand-alone accelerator implementation and the project use cases., Comment: 10 pages, 2 figures, conference

Published
2023
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6. Tracking environmental changes in an Early Cretaceous epicontinental sea: Sedimentology and geochemistry of the Romualdo Formation (Araripe Basin, NE Brazil)

Author

Ferreira, Laís de Oliveira, Chagas, Victor Eletherio, Bobco, Fabia Emanuela Rafaloski, de Souza, Danielle Cardoso, Salgado-Campos, Victor Matheus Joaquim, Sedorko, Daniel, Neves, Manuely, Silveira, Luís Fernando, Mendonça Filho, João Graciano, Araújo, Bruno César, and Borghi, Leonardo

Published
2025
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9. Disentangling the veil line for Brazilian biodiversity: An overview from two long-term research programs reveals huge gaps in ecological data reporting

Author

Guimaraes, Aretha Franklin, de Alagao Querido, Luciano Carramaschi, Rocha, Taina, de Jesus Rodrigues, Domingos, Viana, Pedro Lage, de Godoy Bergallo, Helena, Fernandes, Geraldo Wilson, Toma, Tiago Shizen Pacheco, Streit, Helena, Overbeck, Gerhard Ernst, de Souza, Alberico Queiroz Salgueiro, Lima, Albertina Pimentel, da Rosa, Clarissa Alves, de Viveiros Grelle, Carlos Eduardo, Lopes, Alessandra Monteiro, Curcino, Alexandre, de Paula, Alexandre Souza, Andriolo, Aline, dos Santos Dias, Aline, Santos, Aline Tavares, Bernardes, Amanda Araujo, da Silva Oliveira, Amanda Batista, de Barros, Ana Angelica Monteiro, e Silva, Ana Carolina Borges Lins, da Cruz, Ana Carolina Rodrigues, de Holanda, Ana Sofia Sousa, Bueno, Anderson Saldanha, Nunes-Freitas, Andre Felippe, Yves, Andre, da Silva Alencar, Andreia, Scabin, Andressa Barbara, Manzatto, Angelo Gilberto, Lima, Antonio Cesar Silva, Pontes, Antonio Rossano Mendes, Castro, Arlison B., Gomes, Arthur Monteiro, Banhos, Aureo, Rosado, Bruno H.P., dos Santos Batista, Caio Augusto, Siqueira, Carla Costa, Fontana, Carla Suertegaray, da Rocha, Carlos Frederico Duarte, Brocardo, Carlos R., da Costa Doria, Carolina Rodrigues, Castilho, Carolina Volkmer, Pessanha, Caroline, Cordeiro, Cesar A.M.M., Cronemberger, Cecilia, Andretti, Christian Borges, Cornelius, Cintia, Campos, Ciro, Borges-Matos, Clarice, Barros, Claudia Franca, Keller, Claudia, de Oliveira Cavalcante, Claymir, de Sales Dambros, Cristian, da Silva Machado, Davi Nepomuceno, Tassinari, Diego, Villela, Dora Maria, Chiaraniv, Eduardo, de Farias Geisler, Eduardo, Velez-Martin, Eduardo, Carvalho-Junior, Elildo Alves Ribeiro, Drechsler-Santos, Elisandro Ricardo, Lourenco, Elizabete Captivo, Franklin, Elizabeth, Higashikawa, Emilio Manabu, Pezzini, Flavia, de Oliveira Roque, Fabio, Baccaro, Fabricio Beggiato, Becker, Fernando Gertum, Cabeceira, Fernando Goncalvez, do Prado Florencio, Fernando, Barbosa, Flavia Rodrigues, Zuquim, Gabriela, Ferreira, Guilherme Braga, de Vargas, Guilherme Krahl, Mourao, Guilherme, Rousseau, Guillaume Xavier, de Lima, Haroldo Cavalcante, Farias, Hugo Leonardo Sousa, Kaefer, Igor Luis, Ghizoni, Ivo Rohling, da Costa de Noronha, Janaina, de Oliveira, Jaqueline Lopes, Santos, Jhonson Reginaldo Silva, Jarenkow, Joao Andre, de Melo-Junior, Joao Carlos Ferreira, dos Santos, Joao Vitor Chave, de Oliveira, Jocieli, de Souza, Jorge Luiz Pereira, Baumgratz, Jose Fernando Andrade, de Morais, Jose Wellinton, de Melo Silva, Joyce, de Gois Silva, Julia, Wingert, Juliana M., Menger, Juliana, Ferrer, Juliano, Dayrell, Jussara Santos, da Silva-Goncalves, Kelly Cristina, Torralvo, Kelly, da Silva Cruz, Kely, da Silva Sylvestre, Lana, de Andrade Ribas, Leonor, Battirola, Leandro Dênis, Ramos, Leticia, Caires, Leticia Rocha, da Silva Carvalho, Lidiany Camila, Stegmann, Lis Fernandes, Carvalho, Lucelia Nobre, da Silva Menezes, Luciana, Costa, Luciana Moraes, Podgaiski, Luciana Regina, Silveira, Luis Fabio, Malabarba, Luiz Roberto, Frangipani, Marcelo Araujo, Tabarelli, Marcelo, Nascimento, Marcelo Trindade, Marques, Marcia Cristina Mendes, Spies, Marcia R., de Oliveira dos Santos, Marco Antonio, Anaicy, Marcos, Vital, Marcos Jose Salgado, Silveira, Marcos, Vieira, Marcus Vinicius, de Moura Araujo, Maria Aparecida, de Almeida Silveira, Maria Aurea Pinheiro, Barros, Maria Fabiola, Faitanin, Mariana Alves, Iguatemy, Mariana, da Cunha, Mariana Souza, da Silva Murakami, Mariana Moreira, Messias, Mariluce Rezende, Martins, Marlucia Bonifacio, Camana, Mateus, de Medeiros Correa, Nadjara, Fonseca, Nathan Castro, Prieto-Benavides, Oscar Oswaldo, Pena Rodrigues, Pablo J.F., de Andrade, Paloma Leal, Pequeno, Pedro Aurelio Costa Lima, Gananca, Pedro Henrique Salomao, da Silva Ferreira, Pedro Paulo, de Andrade, Poliana Cristina Rodrigues, Azarak, Priscila Alencar, de Fraga, Rafael, Rabelo, Rafael M., de Lima Santos, Raylanne, Barbosa, Reinaldo Imbrozio, Dala-Corte, Renato Bolson, Vicente, Ricardo Eduardo, de Oliveira Perdiz, Ricardo, da Cunha Araujo, Rodrigo Paulo, de Andrade, Ricardo Teixeira Gregorio, de Cassia Quitete Portela, Rita, Fadini, Rodrigo, Feitosa, Rodrigo Machado, Santa-Brigida, Rosangela, Cerqueira, Rui, Muller, Sandra Cristina, Santorelli, Sergio, dos Santos, Sonia Barbosa, Cechin, Sonia Zanini, Avilla, Stefano Spiteri, Pansini, Susamar, Aragon, Susan, da Silva Figueiredo, Taina, Sobroza, Tainara Venturini, de Fatima Ramos Guimaraes, Tais, dos Santos, Talitha Ferreira, Emilio, Thaise, de Azevedo Amorim, Thiago, Izzo, Thiago, Sogral, Thadeu, dos Santos, Tiago Gomes, Vincent, Timothy Lee, de Lima Rocha, Tomas, Pillar, Valerio D., Mesquita, Vanessa Pontes, Silva, Vinicius Duncan, Cyrino, Vitor Melo Erse, Borges-Junior, Vitor Nelson Teixeira, Layme, Viviane Maria Guedes, Mota, Wendarlem Galvao, Santos, Wenderson Nunes, Drose, William, Silva, Williamar Rodrigues, and Magnusson, William E.

Published
2024
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10. Clinical Practice Mexican Guidelines for the Treatment of Systemic Lupus Erythematosus: 2024 Update

Author

Andrade-Ortega, Lilia, Xibillé-Friedmann, Daniel, Galarza-Delgado, Dionicio A., Saavedra, Miguel Ángel, Alvarez-Nemegyei, José, Amigo-Castañeda, Mary-Carmen, Fragoso-Loyo, Hilda, Gordillo-Huerta, María Vanessa, Irazoque-Palazuelos, Fedra, Jara-Quezada†, Luis Javier, Merayo-Chalico, Javier, Portela-Hernández, Margarita, Sicsik-Ayala, Sandra, Abud-Mendoza, Carlos, Alpizar-Rodriguez, Deshire, Amaya-Estrada, José Luis, Barragán-Navarro, Yaneth R., Carrillo-Vázquez, Sandra M., Castro-Colín, Zully, Cruz-Álvarez, Luis Javier, Durán-Barragán, Sergio, Esquivel-Valerio, Jorge A., Gamez-Nava, Jorge Iván, García-García, Conrado, Gonzalez-Lopez, Laura, Hadid-Smeke, Jaime, Hernández-Bedolla, Alina, Hernández-Cabrera, María Fernanda, Herrera-VanOostdam, David A., Horta-Baas, Gabriel, Iturbide-Escamilla, Alberto E., Muñoz-Lopez, Sandra, Pacheco-Tena, Cesar, Pérez-Cristóbal, Mario, Pimentel-Leon, Rafael R., Pinto-Ortiz, Mercedes, Ramos-Sánchez, María Azucena, Sandoval-Cabrera, Diana V., de Anda, Karina Santana, Silveira, Luis H., and Barile-Fabris, Leonor A.

Published
2024
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11. Guías de Práctica Clínica para el tratamiento del lupus eritematoso sistémico del Colegio Mexicano de Reumatología. Actualización 2024

Author

Andrade-Ortega, Lilia, Xibillé-Friedmann, Daniel, Galarza-Delgado, Dionicio A., Saavedra, Miguel Ángel, Alvarez-Nemegyei, José, Amigo-Castañeda, Mary-Carmen, Fragoso-Loyo, Hilda, Gordillo-Huerta, María Vanessa, Irazoque-Palazuelos, Fedra, Jara-Quezada†, Luis Javier, Merayo-Chalico, Javier, Portela-Hernández, Margarita, Sicsik-Ayala, Sandra, Abud-Mendoza, Carlos, Alpizar-Rodriguez, Deshire, Amaya-Estrada, José Luis, Barragán-Navarro, Yaneth R., Carrillo-Vázquez, Sandra M., Castro-Colín, Zully, Cruz-Álvarez, Luis Javier, Durán-Barragán, Sergio, Esquivel-Valerio, Jorge A., Gamez-Nava, Jorge Iván, García-García, Conrado, Gonzalez-Lopez, Laura, Hadid-Smeke, Jaime, Hernández-Bedolla, Alina, Hernández-Cabrera, María Fernanda, Herrera-VanOostdam, David A., Horta-Baas, Gabriel, Iturbide-Escamilla, Alberto E., Muñoz-Lopez, Sandra, Pacheco-Tena, Cesar, Pérez-Cristóbal, Mario, Pimentel-Leon, Rafael R., Pinto-Ortiz, Mercedes, Ramos-Sánchez, María Azucena, Sandoval-Cabrera, Diana V., Santana de Anda, Karina, Silveira, Luis H., and Barile-Fabris, Leonor A.

Published
2024
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12. Functional structure of the natural enemy community of the fall armyworm, Spodoptera frugiperda in the Americas

Author

Wyckhuys, Kris A.G., Akutse, Komivi S., Amalin, Divina M., Araj, Salah-Eddin, Barrera, Gloria, Joy B. Beltran, Marie, Ben Fekih, Ibtissem, Calatayud, Paul-André, Cicero, Lizette, Cokola, Marcellin C., Colmenarez, Yelitza C., Dessauvages, Kenza, Dubois, Thomas, Durocher-Granger, Léna, Espinel, Carlos, Fernández-Triana, José L., Francis, Frederic, Gómez, Juliana, Haddi, Khalid, Harrison, Rhett D., Haseeb, Muhammad, Iwanicki, Natasha S.A., Jaber, Lara R., Khamis, Fathiya M., Legaspi, Jesusa C., Lomeli-Flores, Refugio J., Lopes, Rogerio B., Lyu, Baoqian, Montoya-Lerma, James, Nguyen, Tung D., Nurkomar, Ihsan, Perier, Jermaine D., Pozsgai, Gabor, Ramírez-Romero, Ricardo, Robinson-Baker, Annmarie S., Sanchez-Garcia, Francisco J., Silveira, Luis C., Simeon, Larisner, Solter, Leellen F., Santos-Amaya, Oscar F., de Souza Tavares, Wagner, Trabanino, Rogelio, Vásquez, Carlos, Wang, Zhenying, Wengrat, Ana P.G.S., Zang, Lian-Sheng, Zhang, Wei, Zimba, Kennedy J., Wu, Kongming, and Elkahky, Maged

Published
2024
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14. Constant Delay Lattice Train Schedules

Author

De Carufel, Jean-Lou, Hill, Darryl, Maheshwari, Anil, Roy, Sasanka, and da Silveira, Luís Fernando Schultz Xavier

Subjects
Computer Science - Computational Geometry
Abstract

The following geometric vehicle scheduling problem has been considered: given continuous curves $f_1, \ldots, f_n : \mathbb{R} \rightarrow \mathbb{R}^2$, find non-negative delays $t_1, \ldots, t_n$ minimizing $\max \{ t_1, \ldots, t_n \}$ such that, for every distinct $i$ {and $j$} and every time $t$, $| f_j (t - t_j) - f_i (t - t_i) | > \ell$, where~$\ell$ is a given safety distance. We study a variant of this problem where we consider trains (rods) of fixed length $\ell$ that move at constant speed and sets of train lines (tracks), each of which consisting of an axis-parallel line-segment with endpoints in the integer lattice $\mathbb{Z}^d$ and of a direction of movement (towards $\infty$ {or $- \infty$}). We are interested in upper bounds on the maximum delay we need to introduce on any line to avoid collisions, but more specifically on universal upper bounds that apply no matter the set of train lines. We show small universal constant upper bounds for $d = 2$ and any given $\ell$ and also for $d = 3$ and $\ell = 1$. Through clique searching, we are also able to show that several of these upper bounds are tight., Comment: 14 pages, 6 figures

Published
2021

15. Update of the guidelines for the pharmacological treatment of rheumatoid arthritis by the Mexican College of Rheumatology 2023

Author

Abud-Mendoza, Carlos, Aceves-Ávila, Francisco Javier, Arce-Salinas, César Alejandro, Álvarez Nemegyei, José, Barile-Fabris, Leonor, Durán-Barragán, Sergio, Flores-Alvarado, Diana Elsa, Hernández-Núñez, Eufrates, Irazoque-Palazuelos, Fedra, Moctezuma-Ríos, José Francisco, Pascual-Ramos, Virginia, Portela-Hernández, Margarita, Silveira, Luis Humberto, Andrade-Ortega, Lilia, Barrera-Vargas, Ana, Carrillo-Vázquez, Sandra, Castro-Colin, Zully, Cuevas-Orta, Enrique, Flores-Suárez, Luis Felipe, Guaracha-Basáñez, Guillermo Arturo, Hernández-Cabrera, María Fernanda, de Jesús Hernández-Galarza, Iván, Herrera-vanOostdam, David Alejandro, Lobato-Belmonte, Adriana Concepción, Martínez-Martínez, Laura Aline, Martínez-Martínez, Marco Ulises, Medrano-Ramírez, Gabriel, Merayo-Chalico, Francisco Javier, Meza-López y Olguín, Graciela, Olan, Francisco, Peña-Santos, Genaro, Ramos-Remus, César, Reyes-Cordero, Greta, Rivera-Terán, Vijaya, Rojas-Serrano, Jorge, Serna-Peña, Griselda, Sicsik-Ayala, Sandra, Sifuentes-Cantú, César Armando, Vega-Morales, David, Villaseñor-Ovies, Pablo, Xibillé-Friedmann, Daniel, and Pacheco-Tena, César

Published
2024
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16. Actualización de las Guías para el Tratamiento Farmacológico de la Artritis Reumatoide del Colegio Mexicano de Reumatología 2023

Author

Abud-Mendoza, Carlos, Aceves-Ávila, Francisco Javier, Arce-Salinas, César Alejandro, Álvarez Nemegyei, José, Barile-Fabris, Leonor, Durán-Barragán, Sergio, Flores-Alvarado, Diana Elsa, Hernández-Núñez, Eufrates, Irazoque-Palazuelos, Fedra, Moctezuma-Ríos, José Francisco, Pascual-Ramos, Virginia, Portela-Hernández, Margarita, Silveira, Luis Humberto, Andrade-Ortega, Lilia, Barrera-Vargas, Ana, Carrillo-Vázquez, Sandra, Castro-Colin, Zully, Cuevas-Orta, Enrique, Flores-Suárez, Luis Felipe, Guaracha-Basáñez, Guillermo Arturo, Hernández-Cabrera, María Fernanda, Hernández-Galarza, Iván de Jesús, Herrera-vanOostdam, David Alejandro, Lobato-Belmonte, Adriana Concepción, Martínez-Martínez, Laura Aline, Martínez-Martínez, Marco Ulises, Medrano-Ramírez, Gabriel, Merayo-Chalico, Francisco Javier, Meza-López y Olguín, Graciela, Olan, Francisco, Peña-Santos, Genaro, Ramos-Remus, César, Reyes-Cordero, Greta, Rivera-Terán, Vijaya, Rojas-Serrano, Jorge, Serna-Peña, Griselda, Sicsik-Ayala, Sandra, Sifuentes-Cantú, César Armando, Vega-Morales, David, Villaseñor-Ovies, Pablo, Xibillé-Friedmann, Daniel, and Pacheco-Tena, César

Published
2024
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17. Global scientific progress and shortfalls in biological control of the fall armyworm Spodoptera frugiperda

Author

Wyckhuys, Kris A.G., Akutse, Komivi S., Amalin, Divina M., Araj, Salah-Eddin, Barrera, Gloria, Beltran, Marie Joy B., Ben Fekih, Ibtissem, Calatayud, Paul-André, Cicero, Lizette, Cokola, Marcellin C., Colmenarez, Yelitza C., Dessauvages, Kenza, Dubois, Thomas, Durocher-Granger, Léna, Espinel, Carlos, Fallet, Patrick, Fernández-Triana, José L., Francis, Frederic, Gómez, Juliana, Haddi, Khalid, Harrison, Rhett D., Haseeb, Muhammad, Iwanicki, Natasha S.A., Jaber, Lara R., Khamis, Fathiya M., Legaspi, Jesusa C., Lomeli-Flores, Refugio J., Lopes, Rogerio B., Lyu, Baoqian, Montoya-Lerma, James, Montecalvo, Melissa P., Polaszek, Andrew, Nguyen, Tung D., Nurkomar, Ihsan, O'Hara, James E., Perier, Jermaine D., Ramírez-Romero, Ricardo, Sánchez-García, Francisco J., Robinson-Baker, Ann M., Silveira, Luis C., Simeon, Larisner, Solter, Leellen F., Santos-Amaya, Oscar F., Talamas, Elijah J., de Souza Tavares, Wagner, Trabanino, Rogelio, Turlings, Ted C.J., Valicente, Fernando H., Vásquez, Carlos, Wang, Zhenying, Wengrat, Ana P.G.S., Zang, Lian-Sheng, Zhang, Wei, Zimba, Kennedy J., Wu, Kongming, Elkahky, Maged, and Hadi, Buyung A.R.

Published
2024
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18. An Instance-Based Algorithm for Deciding the Bias of a Coin

Author

da Silveira, Luís Fernando Schultz Xavier and Smid, Michiel

Subjects
Computer Science - Data Structures and Algorithms
Abstract

Let $q \in (0,1)$ and $\delta \in (0,1)$ be real numbers, and let $C$ be a coin that comes up heads with an unknown probability $p$, such that $p \neq q$. We present an algorithm that, on input $C$, $q$, and $\delta$, decides, with probability at least $1-\delta$, whether $pq$. The expected number of coin flips made by this algorithm is $O \left( \frac{\log\log(1/\varepsilon) + \log(1/\delta)}{\varepsilon^2} \right)$, where $\varepsilon = |p-q|$.

Published
2020

19. Mangrove and Salt Marsh Migratory and Resident Birds

Author

Mancini, Patricia Luciano, da Costa, Thiago Vernaschi Vieira, Dias, Rafael Antunes, Silveira, Luís Fábio, Schunck, Fabio, Turra, Alexander, Series Editor, Schaeffer-Novelli, Yara, editor, Abuchahla, Guilherme Moraes de Oliveira, editor, and Cintrón-Molero, Gilberto, editor

Published
2023
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22. Blue Tourism

Author

de Brito, Mónica Morais, da Silveira, Luís Ávila, Dieke, Peter U. C., Section editor, Jafari, Jafar, editor, and Xiao, Honggen, editor

Published
2024
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26. The value of inquiring patients about local discomfort during blood pressure measurement for fibromyalgia detection. A cross-sectional study

Author

Del-Río-Guerrero, Viridiana, Martínez-Martínez, Laura-Aline, Arias-Callejas, Karina, Carbonell-Bobadilla, Natalia, Mejía-Segura, Alejandra, Azamar-Morales, Gibran, Espinosa-Orantes, Alejandra, Molina-Sánchez, José-Raúl, Mora-Ramírez, Mauricio, Mejía-Ávila, María-Fernanda, Vargas Guerrero, Angélica, Silveira, Luis H., and Martínez-Lavín, Manuel

Published
2023
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32. Approximability of Covering Cells with Line Segments

Author

Carmi, Paz, Maheshwari, Anil, Mehrabi, Saeed, and da Silveira, Luís Fernando Schultz Xavier

Subjects
Computer Science - Computational Geometry
Abstract

In COCOA 2015, Korman et al. studied the following geometric covering problem: given a set $S$ of $n$ line segments in the plane, find a minimum number of line segments such that every cell in the arrangement of the line segments is covered. Here, a line segment $s$ covers a cell $f$ if $s$ is incident to $f$. The problem was shown to be NP-hard, even if the line segments in $S$ are axis-parallel, and it remains NP-hard when the goal is cover the "rectangular" cells (i.e., cells that are defined by exactly four axis-parallel line segments). In this paper, we consider the approximability of the problem. We first give a PTAS for the problem when the line segments in $S$ are in any orientation, but we can only select the covering line segments from one orientation. Then, we show that when the goal is to cover the rectangular cells using line segments from both horizontal and vertical line segments, then the problem is APX-hard. We also consider the parameterized complexity of the problem and prove that the problem is FPT when parameterized by the size of an optimal solution. Our FPT algorithm works when the line segments in $S$ have two orientations and the goal is to cover all cells, complementing that of Korman et al. in which the goal is to cover the "rectangular" cells., Comment: 12 pages, 4 figures. To appear in COCOA 2018

Published
2018

36. Geodesic Obstacle Representation of Graphs

Author

Bose, Prosenjit, Carmi, Paz, Dujmovic, Vida, Mehrabi, Saeed, Montecchiani, Fabrizio, Morin, Pat, and da Silveira, Luis Fernando Schultz Xavier

Subjects
Computer Science - Computational Geometry
Abstract

An obstacle representation of a graph is a mapping of the vertices onto points in the plane and a set of connected regions of the plane (called obstacles) such that the straight-line segment connecting the points corresponding to two vertices does not intersect any obstacles if and only if the vertices are adjacent in the graph. The obstacle representation and its plane variant (in which the resulting representation is a plane straight-line embedding of the graph) have been extensively studied with the main objective of minimizing the number of obstacles. Recently, Biedl and Mehrabi (GD 2017) studied grid obstacle representations of graphs in which the vertices of the graph are mapped onto the points in the plane while the straight-line segments representing the adjacency between the vertices is replaced by the $L_1$ (Manhattan) shortest paths in the plane that avoid obstacles. In this paper, we introduce the notion of geodesic obstacle representations of graphs with the main goal of providing a generalized model, which comes naturally when viewing line segments as shortest paths in the Euclidean plane. To this end, we extend the definition of obstacle representation by allowing some obstacles-avoiding shortest path between the corresponding points in the underlying metric space whenever the vertices are adjacent in the graph. We consider both general and plane variants of geodesic obstacle representations (in a similar sense to obstacle representations) under any polyhedral distance function in $\mathbb{R}^d$ as well as shortest path distances in graphs. Our results generalize and unify the notions of obstacle representations, plane obstacle representations and grid obstacle representations, leading to a number of questions on such embeddings.

Published
2018

37. More Tur\'an-Type Theorems for Triangles in Convex Point Sets

Author

Aronov, Boris, Dujmović, Vida, Morin, Pat, Ooms, Aurélien, and da Silveira, Luís Fernando Schultz Xavier

Subjects
Mathematics - Combinatorics, Computer Science - Computational Geometry, Computer Science - Discrete Mathematics
Abstract

We study the following family of problems: Given a set of $n$ points in convex position, what is the maximum number triangles one can create having these points as vertices while avoiding certain sets of forbidden configurations. As forbidden configurations we consider all 8 ways in which a pair of triangles in such a point set can interact. This leads to 256 extremal Tur\'an-type questions. We give nearly tight (within a $\log n$ factor) bounds for 248 of these questions and show that the remaining 8 questions are all asymptotically equivalent to Stein's longstanding tripod packing problem., Comment: 25 pages, 14 figures, 16 graphics. This version corrects one theorem statement from the original version

Published
2017

38. Human-modified landscapes narrow the isotopic niche of neotropical birds

Author

Navarro, Ana Beatriz, Magioli, Marcelo, Bogoni, Juliano André, Moreira, Marcelo Zacharias, Silveira, Luís Fábio, Alexandrino, Eduardo Roberto, da Luz, Daniela Tomasio Apolinario, Pizo, Marco Aurelio, Silva, Wesley Rodrigues, de Oliveira, Vanessa Cristina, Donatelli, Reginaldo José, Christianini, Alexander V., Piratelli, Augusto João, and Ferraz, Katia Maria Paschoaletto Micchi Barros

Published
2021

40. Efficient Model Reduction of Myelinated Compartments as Port-Hamiltonian Systems

Author

Barbulescu, Ruxandra, Ciuprina, Gabriela, Ionescu, Tudor, Ioan, Daniel, Silveira, Luis Miguel, Bock, Hans Georg, Series Editor, de Hoog, Frank, Series Editor, Friedman, Avner, Series Editor, Gupta, Arvind, Series Editor, Nachbin, André, Series Editor, Ozawa, Tohru, Series Editor, Pulleyblank, William R., Series Editor, Rusten, Torgeir, Series Editor, Santosa, Fadil, Series Editor, Seo, Jin Keun, Series Editor, Tornberg, Anna-Karin, Series Editor, van Beurden, Martijn, editor, Budko, Neil, editor, and Schilders, Wil, editor

Published
2021
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41. The Minimum Moving Spanning Tree Problem

Author

Akitaya, Hugo A., Biniaz, Ahmad, Bose, Prosenjit, De Carufel, Jean-Lou, Maheshwari, Anil, da Silveira, Luís Fernando Schultz Xavier, Smid, Michiel, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Lubiw, Anna, editor, and Salavatipour, Mohammad, editor

Published
2021
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42. Portugal

Author

da Silveira, Luís Nuno Espinha and Martí-Henneberg, Jordi, editor

Published
2021
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43. Recommendations of the Mexican College of Rheumatology for the management of psoriatic arthritis

Author

Casasola-Vargas, Julio, Flores-Alvarado, Diana, Silveira, Luis H., Sicsik-Ayala, Sandra, Reyes-Cordero, Greta, Villanueva Quintero, Guadalupe, Amaya Guerra, Mario, Reyes Orozco, Sara G., Zazueta Montiel, Beatriz E., Hernández-Paz, Roberto, Mendoza-Fuentes, Angélica, Bernard-Medina, Ana G., López Rodriguez, Alejandra, Barbosa Cobos, Rosa E., Burgos-Vargas, Rubén, and Pacheco-Tena, César

Published
2021
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44. Recomendaciones del Colegio Mexicano de Reumatología para el manejo de la artritis psoriásica

Author

Casasola-Vargas, Julio, Flores-Alvarado, Diana, Silveira, Luis H., Sicsik-Ayala, Sandra, Reyes-Cordero, Greta, Villanueva Quintero, Guadalupe, Amaya Guerra, Mario, Reyes Orozco, Sara G., Zazueta Montiel, Beatriz E., Hernández-Paz, Roberto, Mendoza-Fuentes, Angélica, Bernard-Medina, Ana G., López Rodriguez, Alejandra, Barbosa Cobos, Rosa E., Burgos-Vargas, Rubén, and Pacheco-Tena, César

Published
2021
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47. Remaining suitable areas for the critically endangered Brazilian Merganser (Mergus octosetaceus; Aves, Anseriformes) are threatened by hydroelectric power plants

Author

Bovo, Alex Augusto Abreu, Ferraz, Katia Maria Paschoaletto Micchi de Barros, Ribeiro, Flávia, Lins, Lívia Vanucci, Barbosa, Marcelo de Oliveira, Previdente, Fernando Henrique, Disconzi, Gislaine M.S., Sebaio, Fabiane, Antas, Paulo de Tarso Zuquim, Guaraldo, André de Camargo, Resende, Alexandre, Lagos, Adriano Rodrigues, Barbosa, Antonio Eduardo Araujo, and Silveira, Luís Fábio

Published
2021
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49. Update of the Mexican College of Rheumatology guidelines for the pharmacological treatment of rheumatoid arthritis, 2018

Author

Cardiel, Mario H., Carrillo, Sandra, Pérez, Marcela, Andrade, Lilia, Pacheco Tena, César, Silveira, Luis H., Limón, Leonardo, Cerpa, Sergio, Gutiérrez Ureña, Sergio, Durán, Sergio, Irazoque Palazuelos, Fedra, Muñoz López, Sandra, Sicsik Ayala, Sandra Araceli, Barile, Leonor, Ramos Sánchez, María Azucena, Grajeda Portes, Daniel, Portela, Margarita, Hernández Bedolla, Alina, García-Figueroa, José Luis, Montero, Mauricio, Abud-Mendoza, Carlos, Martínez Martínez, Marco Ulises, Herrera van Ostdam, David, Pascual-Ramos, Virginia, Merayo-Chalico, Javier, Guzmán-Sánchez, Istar, Pérez-Bastidas, María Esther, Aguilar Arreola, Jorge Enrique, López Rodríguez, Alejandra, Reyes-Cordero, Greta, Ricardez, Humberto Alfredo, Hernández Cabrera, María Fernanda, Olvera-Soto, Guadalupe, and Xibillé Friedmann, Daniel

Published
2021
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50. Actualización de las guías del tratamiento farmacológico de la artritis reumatoide del Colegio Mexicano de Reumatología 2018

Author

Cardiel, Mario H., Carrillo, Sandra, Pérez, Marcela, Andrade, Lilia, Pacheco Tena, César, Silveira, Luis H., Limón, Leonardo, Cerpa, Sergio, Gutiérrez Ureña, Sergio, Durán, Sergio, Irazoque Palazuelos, Fedra, Muñoz López, Sandra, Sicsik Ayala, Sandra Araceli, Barile, Leonor, Ramos Sánchez, María Azucena, Grajeda Portes, Daniel, Portela, Margarita, Hernández Bedolla, Alina, García-Figueroa, José Luis, Montero, Mauricio, Abud-Mendoza, Carlos, Martínez Martínez, Marco Ulises, Herrera van Ostdam, David, Pascual-Ramos, Virginia, Merayo-Chalico, Javier, Guzmán-Sánchez, Istar, Pérez-Bastidas, María Esther, Aguilar Arreola, Jorge Enrique, López Rodríguez, Alejandra, Reyes-Cordero, Greta, Ricardez, Humberto Alfredo, Hernández Cabrera, María Fernanda, Olvera-Soto, Guadalupe, and Xibillé Friedmann, Daniel

Published
2021
Full Text
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