Search Results - "Tura, Fernando"

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  1. 1

    A conjecture on the eigenvalues of threshold graphs by Tura, Fernando C.

    Published in Linear algebra and its applications (01-03-2021)
    “…Let An be the connected anti-regular graph of order n. It was conjectured that among all threshold graphs on n vertices, An has the smallest positive…”
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  2. 2

    A linear algorithm for obtaining the Laplacian eigenvalues of a cograph by Chen, Guantao, Tura, Fernando C.

    Published in Special matrices (06-09-2024)
    “…In this article, we give an time and space algorithm for obtaining the Laplacian eigenvalues of a cograph. This approach is more efficient as there is no need…”
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  3. 3

    Laplacian eigenvalues of equivalent cographs by Lazzarin, João, Sosa, Oscar F., Tura, Fernando C.

    Published in Linear & multilinear algebra (13-04-2023)
    “…Let G and H be equivalent cographs with reductions and and suppose the vertices of and are labelled by the twin numbers of the k twin classes they represent…”
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  4. 4

    Exponentially many graphs have a Q-cospectral mate by Carvalho, João, Souza, Bruna S., Trevisan, Vilmar, Tura, Fernando C.

    Published in Discrete mathematics (01-09-2017)
    “…We develop an algorithm for computing the characteristic polynomial of matrices related to threshold graphs. We use this as tool to exhibit, for any natural…”
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  5. 5

    An explicit formula for the distance characteristic polynomial of threshold graphs by Lazzarin, João, Márquez, Oscar F., Tura, Fernando C.

    Published in Computational & applied mathematics (01-07-2023)
    “…A threshold graph G on n vertices is defined by a binary sequence of length n . In this paper, we present an explicit formula for computing the distance…”
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  6. 6

    Assessment of risk of falls in elderly living at home by Smith, Adriana de Azevedo, Silva, Antonia Oliveira, Rodrigues, Rosalina Aparecida Partezani, Moreira, Maria Adelaide Silva Paredes, Nogueira, Jordana de Almeida, Tura, Luiz Fernando Rangel

    Published in Revista latino-americana de enfermagem (01-01-2017)
    “…to assess the risk of falls in elderly, by comparing the sociodemographic and cognitive factors, history of falls and self-reported comorbidities…”
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  7. 7

    Social representations of older adults regarding quality of life by Ferreira, Marielle Cristina Gonçalves, Tura, Luiz Fernando Rangel, Silva, Rafael Celestino da, Ferreira, Márcia de Assunção

    Published in Revista Brasileira de Enfermagem (01-07-2017)
    “…to identify the social representations of older adults regarding quality of life, and to analyze the care practices adopted to promote it. qualitative,…”
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  8. 8

    The characteristic polynomial of generalized lollipop graphs by Tura, Fernando

    Published in Applied mathematics and computation (15-11-2018)
    “…A generalized lollipop graph is formed by connecting a tree and a threshold graph with an edge. Motivated by a sequence of algorithms that compute the…”
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  9. 9

    Changes and events over life course: a comparative study between groups of older adults by Silva, Luípa Michele, Silva, Antônia Oliveira, Tura, Luiz Fernando Rangel, Moreira, Maria Adelaide Silva Paredes, Nogueira, Jordana Almeida, Cavalli, Stefano

    Published in Revista latino-americana de enfermagem (01-01-2015)
    “…to identify the changes which had occurred over the last year in the life of older adults, as well as the values attributed to these changes. this is a…”
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  10. 10

    cospectrality and -energy in cographs by Tura, Fernando

    Published in Linear & multilinear algebra (01-02-2018)
    “…The distance Laplacian matrix of a connected graph G is defined to be where denotes the distance matrix of G and diag(Tr) denotes the diagonal matrix of the…”
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  11. 11

    Eigenvalues and energy in threshold graphs by Jacobs, David P., Trevisan, Vilmar, Tura, Fernando

    Published in Linear algebra and its applications (15-01-2015)
    “…Assuming a uniform random model of selecting creation sequences, we show that almost every connected threshold graph has more negative than positive…”
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  12. 12

    Eigenvalue location in threshold graphs by Jacobs, David P., Trevisan, Vilmar, Tura, Fernando

    Published in Linear algebra and its applications (15-11-2013)
    “…Let G be a threshold graph of order n with adjacency matrix A. We present an O(n) algorithm for constructing a diagonal matrix congruent to Bx=A+xI for any x…”
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  13. 13

    Competition in the arts of midwifery in the city of Rio de Janeiro from 1835 to 1900 by Medeiros, Helber Renato Feydit de, Carvalho, Diana Maul de, Tura, Luiz Fernando Rangel

    Published in História, ciências, saúde--Manguinhos (01-10-2018)
    “…The article discusses competition between midwives and doctors offering birth-related services in the city of Rio de Janeiro from 1835 to 1900. The research…”
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  14. 14

    Generating $I$-Eigenvalue Free Threshold Graphs by Allem, Luiz Emilio, R. Oliveira, Elismar, Tura, Fernando

    Published in The Electronic journal of combinatorics (19-05-2023)
    “…A graph is said to be $I$-eigenvalue free if it has no eigenvalues in the interval $I$ with respect to the adjacency matrix $A$. In this paper we present…”
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  15. 15

    Social representations of adolescents about sexuality on the internet by Santos, Gabriela Silva Dos, Queiroz, Ana Beatriz Azevedo, Tura, Luiz Fernando Rangel, Penna, Lúcia Helena Garcia, Parmejiani, Elen Petean, Pinto, Carina Bulcão

    “…OBJECTIVETo apprehend the social representations of adolescents about sexuality on the internet. METHODQualitative research, based on the structural approach…”
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  16. 16

    The Rio Health Gym Program: Daily life, leisure and health of older adults by Ferreira, Marielle Cristina Gonçalves, Tura, Luiz Fernando Rangel, Silva, Rafael Celestino da, Ferreira, Márcia de Assunção

    “…Abstract Objective: to identify the activities performed by older adults as part of the Rio Health Gym Program in their daily lives, and analyze the…”
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    From hepatic diseases and jaundice to viral hepatitis: the configuration of a kaleidoscope by Gaze, Rosangela, Carvalho, Diana Maul de, Santoro-Lopes, Guilherme, Tura, Luiz Fernando Rangel

    Published in Revista de saúde pública (01-02-2013)
    “…Viral hepatitis A, B, C, D and E--systemic hepatotropic viral infections--present as acute hepatitis that, depending on the etiological agent, viral load and…”
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  20. 20

    A concorrência na arte de partejar na cidade do Rio de Janeiro entre 1835 e 1900 by Medeiros, Helber Renato Feydit de, Carvalho, Diana Maul de, Tura, Luiz Fernando Rangel

    Published in História, ciências, saúde--Manguinhos (01-12-2018)
    “…Resumo Este artigo discute a concorrência entre parteiras e médicos na oferta dos serviços de partos na cidade do Rio de Janeiro entre 1835 e 1900. Foram…”
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