Výsledky vyhledávání - "Liliana N. Costa"

Faces of faces of the tridiagonal Birkhoff polytope

Autor: Enide Andrade Martins, Liliana N. Costa

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

The tridiagonal Birkhoff polytope, Ω n t , is the set of real square matrices with nonnegative entries and all rows and columns sums equal to 1 that are tridiagonal. This polytope arises in many problems of enumerative combinatorics, statistics, com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53e53d000cd89f0ce2c28cb9175f5d37
https://doi.org/10.1016/j.laa.2009.10.030

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Face counting on an Acyclic Birkhoff polytope

Autor: Enide Andrade Martins, Liliana N. Costa, C.M. da Fonseca

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Submitted by Enide Martins (enide@ua.pt) on 2011-10-11T16:32:19Z No. of bitstreams: 1 Face counting on an acyclic Birkhoff polytope.pdf: 231509 bytes, checksum: d2a33d57e50c6871d4aafbd359661735 (MD5) Made available in DSpace on 2011-10-31T14:52:06Z (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5afffce77eed6a8a2121fdfe106f47a2
https://doi.org/10.1016/j.laa.2008.10.015

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Faces of faces of the acyclic Birkhoff polytope

Autor: Liliana N. Costa, Enide Andrade Martins

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Submitted by Enide Martins (enide@ua.pt) on 2015-01-06T19:03:09Z No. of bitstreams: 1 faces of faces1072-3374 .pdf: 165304 bytes, checksum: 3a863bf8ca2fc7ffe7c1bc019b8d1fb9 (MD5) Approved for entry into archive by Bella Nolasco(bellanolasco@ua.pt) on

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Free Space Optical Technologies

Autor: G. Incerti, G. M. Tosi Beleffi, Antônio Lúcio Teixeira, Erich Leitgeb, Farukh Nadeem, D.M. Forin, Bernhard C. Geiger, Liliana N. Costa, P.S. De Brito Andre

Publikováno v: Trends in Telecommunications Technologies

Free Space Optics (FSO), also known as Optical Wireless or Lasercom (i.e. Laser Communications), is a re-emerging technology using modulated optical beams to establish short, medium or long reach wireless data transmission. Most of the attention on F

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be358c373970cc7b16eebc54d9be26ba
https://doi.org/10.5772/8488

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Performance comparison of spectrally efficient intensity modulated formats in remodulated WDM PON

Autor: Natasa B. Pavlovic, Liliana N. Costa, Antônio Lúcio Teixeira

Publikováno v: 2009 11th International Conference on Transparent Optical Networks.

Spectrally efficient duobinary and single-sideband (SSB) intensity-modulated formats are analyzed for the first time to the author's knowledge as downstream signals in wavelength division multiplexing passive optical networks. Back-to-back sensitivit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::344f661dcf46cc3694092bbddb1e4e40
https://doi.org/10.1109/icton.2009.5185301

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The number of faces of the tridiagonal Birkhoff polytope

Autor: C.M. da Fonseca, Enide Andrade Martins, Liliana N. Costa

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Submitted by Enide Martins (enide@ua.pt) on 2011-10-18T11:59:11Z No. of bitstreams: 1 The number of faces of the Tridiagonal Birkhoff PolytopeJMS.pdf: 178490 bytes, checksum: c08e20a062d24d7cf4014ad8def3c4f2 (MD5) Made available in DSpace on 2011-11-

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GVD and PMD monitoring by means of SPM and XPM effects in a SOA

Autor: Rogério N. Nogueira, Antônio Lúcio Teixeira, Miguel V. Drummond, Paulo P. Monteiro, Liliana N. Costa

Publikováno v: 2008 10th Anniversary International Conference on Transparent Optical Networks.

Fiber group-velocity dispersion and polarization mode dispersion must be dynamically compensated to avoid performance degradation of optical networks at high bit rates. Precise and reliable dynamic impairment compensation is enabled by optical impair

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::532ffc4897d52177b7325c067d75cff1
https://doi.org/10.1109/icton.2008.4598382

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The diameter of the acyclic Birkhoff polytope

Autor: Liliana N. Costa, Enide Andrade Martins, C.M. da Fonseca

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

Submitted by Enide Martins (enide@ua.pt) on 2011-10-11T16:35:25Z No. of bitstreams: 1 The diameter of the acyclic Birkhoff polytope.pdf: 189999 bytes, checksum: c09bb2fee9cdd5339191147ce25b7774 (MD5) Made available in DSpace on 2011-10-31T15:21:29Z (

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