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Adaptive Modulation and Coding based on Reinforcement Learning for 5G Networks [article]

Mateus P. Mota, Daniel C. Araujo, Francisco Hugo Costa Neto, Andre L. F. de Almeida, F. Rodrigo P. Cavalcanti
2019 arXiv   pre-print
The selected beam pair for the k-th frame is expressed as {w k ,f k } = arg max w,f w H H t f σ 2 , (1) where f and w are columns of F and W, respectively, H t ∈ C N ×M is the channel between the BS and  ...  Each resource block has a total of 12 subcarriers and a subcarrier spacing ∆f = 120KHz. We consider the channel model defined in (5) .  ... 
arXiv:1912.04030v1 fatcat:ikpzbqroprepxjfbfpqujtoijy

Tensor-Based Channel Estimation for Massive MIMO-OFDM Systems

Daniel C. Araujo, Andre L. F. de Almeida, Joao P. C. L. da Costa, Rafael T. de Sousa
2019 IEEE Access  
Moreover, since H v is sparse, we can set L r < I , T p < J , F p < F.  ...  From (4)-(6), we can write the three unfolded matrix forms that represent the measured tensor data Y as follows: Y (1) = QG (1) [F ⊗ X] T ∈ C L r ×T p F p , (25) Y (2) = XG (2) [F ⊗ Q] T ∈ C T p ×L r F  ... 
doi:10.1109/access.2019.2908207 fatcat:po72x3s2cjcvbo25gxmoknwhia

MATHEMATICAL MODELS FOR TEAK FOLIAR AREA ESTIMATION(Tectonas grandis L. f.)
MODELOS MATEMÁTICOS PARA ESTIMATIVA DE ÁREA FOLIAR DE TECA (Tectonas grandis L. f.)

Nathalia Sousa Braga, Ana Camila Aquino Araújo, Igor David Aquino Araújo, Antonio Alan Santos de Souza, Daniel Santos da Cunha, Vicente João Ribeiro Gil, Ian de Souza Rocha, Jnaderson Victor Souza de Almeida, Raimundo Thiago Lima da Silva
2018 Nucleus  
MATHEMATICAL MODELS FOR TEAK FOLIAR AREA ESTIMATION(Tectonas grandis L. f.) SUMMARY: The objective of this research was to obtain an estimation of the leaf area of Tectonas grandis L. f.  ...  RESUMO: Esta pesquisa, objetivou obter uma equação que, por meio de parâmetros lineares dimensionais das folhas, permita a estimativa da área foliar de Tectonas grandis L. f..  ...  A equação linear sem intercepto considerando (CxL) foi o que apresentou o melhor desempenho para estimar a área foliar de teca (Tectonas Grandis L. f.). Vigna unguiculata (L.)  ... 
doi:10.3738/1982.2278.2910 fatcat:ghtklsldyzfl3muki5j5txzdx4

Timber Use in Truss Structures for Roof ("Howe" Type – 8 to 18 Meters)

Danielle F. Palludo, Roberto V. Pinheiro, Diego H. Almeida, Felipe N. Arroyo, Tiago H. Almeida, Marcelo de Castro Takeda, André L. Christoforo, Francisco A. R. Lahr
2017 International Journal of Materials Engineering  
(m) Limit sag (f lim ) (cm) Sag (f) (cm) (L/f) 8 4 2.60 307 10 5 4.21 237 12 6 4.22 284 14 7 5.73 244 16 8 5.67 282 18 9 7.27 247 Table 2 . 2 Volume Open (m³  ...  Among the species studied, the Cedar Rose (Cedrela odorata L.) and Marupá (Simarouba amara Aubl.)  ... 
doi:10.5923/j.ijme.20170705.03 fatcat:sxcboa3mkvdflmn3bqwiag2aky

Cloreto de cetilpiridínio - revisão da literatura

Daniel Alves, Ana L. Costa, Ricardo F. Almeida, João F.C. Carvalho, António Felino
2012 Revista Portuguesa de Estomatologia, Medicina Dentaria e Cirurgia Maxilofacial  
m e d d e n t c i r m a x i l o f a c . 2 0 1 2;5 3(3):181-189 ConclusãoApesar da evidência científica ser ainda escassa, a utilização de colutórios contendo CPC como complemento às formas mecânicas  ...  maior que 1 mm mas que cobre menos de 1/3 da coroa 4 a placa bacteriana cobre entre 1/3 e 2/3 da coroa 5 a placa bacteriana cobre 2/3 ou mais da coroa Índices r e v p o r t e s t o m a t o l  ... 
doi:10.1016/j.rpemd.2011.11.006 fatcat:dgucwkkthrf4jh72lu5r2dcmhu

Wound infection by multiresistant Staphylococcus sciuri identified by molecular methods

Daniel G Coimbra, Alda G C S Almeida, Jorge B O Jùnior, Luiz A F da Silva, Beatriz J Pimentel, Daniel L G Gitaì, Luciana S Moreira, Eurìpedes A Silva-Filho, Tiago G de Andrade
2011 The New Microbiologica  
Haematological analyses showed 4.3 g/dL, hemoglobin level, 12.5 x 10 9 /L leukocytes, 10.6 x 10 9 neutrophil and platelet counts at normal levels.  ... 
pmid:22143819 fatcat:nm5c7e4yy5bfzh7jxygfdyihdi

Tensor-Based Subspace Tracking for Time-Delay Estimation in GNSS Multi-Antenna Receivers

Caio C. R. Garcez, Daniel Valle de Lima, Ricardo Kehrle Miranda, Fábio Mendonça, João Paulo C. L. da Costa, André L. F. de Almeida, Rafael T. de Sousa Jr.
2019 Sensors  
The GNSS signal is a GPS second generation course acquisition PRN code from d = 1 satellite at a carrier frequency f c = 1575.42 MHz, bandwidth B = 1.023 MHz and chip duration T c = 1/B = 977.52 ns with  ...  U (1) s (0) = I 2×L ,Û (3) s (0) = I M s ×L ;Û (4) s (0) = I L s ×L C (1) yy (0) =Ĉ (3) yy (0) =Ĉ (4) yy (0) = I L 2.  ...  . , L do: perform the time-delay estimation.  ... 
doi:10.3390/s19235076 pmid:31757108 pmcid:PMC6928862 fatcat:y6aieaseavhuhfj5arx7bxo4du

Annatto seeds as Antioxidants Source with Linseed Oil for Dairy Cows

Jesus A. C. Osorio, João L. P. Daniel, Jakeline F. Cabral, Kleves V. Almeida, Karoline L. Guimarães, Micheli R. Sippert, Jean C. S. Lourenço, Francilaine E. De Marchi, João P. Velho, Geraldo T. Santos
2021 Animals  
The samples (5 µL) were incubated with 200 µL of 0.4 M acetate buffer at pH 5.8.  ...  A 50 µL sample of milk was added to 2.5 mL of an isooctane/2-propanol solution (2:1, v/v) and vortexed for 1 min.  ... 
doi:10.3390/ani11051465 pmid:34065215 fatcat:abibt4xtojfqrfatyjokp6ovam

Changes in the blood plasma lipidome associated with response to atypical antipsychotic treatments in schizophrenia [article]

Valéria de Almeida, Guilherme L. Alexandrino, Adriano Aquino, Alexandre F. Gomes, Michael Murgu, Paul C. Guest, Johann Steiner, Daniel Martins-de-Souza
2020 bioRxiv   pre-print
ANOVA F-test (α ≤ 0.01).  ...  Lipids were extracted from 25 μL plasma by addition of 100 μL isopropanol, vortexing 1 min, and then incubating 10 min at room temperature.  ... 
doi:10.1101/2020.03.25.008474 fatcat:lql25lo4sjbbhkyo6vei2esovu

Secrecy outage performance of MISO wiretap channels with outdated CSI

Nuwan S. Ferdinand, Daniel Benevides da Costa, Andre L. F. de Almeida, Matti Latva-aho
2014 2014 IEEE International Conference on Communications Workshops (ICC)  
Similarly, for the case of no feedback delay (ρ b = 1), the first non-zero order expansion of F γ B (z) can be attained from (7) as F γ B (z) = 1 N t !  ...  For band-limited spectrum (Clarke's fading spectrum) [13] , ρ b = J 0 (2πf d τ d ), where J 0 (·) denotes the 0 th order Bessel function of the first kind, as given in [15, Eq. (8.402) ], and f d stands  ... 
doi:10.1109/iccw.2014.6881296 dblp:conf/icc/FerdinandCAL14 fatcat:bg6ghzb3ifdr7kbtb4jklgesjy

Tensor-Based Methods for Blind Spatial Signature Estimation in Multidimensional Sensor Arrays

Paulo R. B. Gomes, André L. F. de Almeida, João Paulo C. L. da Costa, João C. M. Mota, Daniel Valle de Lima, Giovanni Del Galdo
2017 International Journal of Antennas and Propagation  
Cross-Correlation Tensor for L-Shaped Sensor Arrays.  ...  Figure 1 : 1 L-shaped array configuration with 1 + 2 −1 sensors.  ... 
doi:10.1155/2017/1615962 fatcat:pv7nnw7hanahflamusliaadi7i

A sliding window approach to detrended fluctuation analysis of heart rate variability

Daniel L. F. Almeida, Fabiano A. Soares, Joao L. A. Carvalho
2013 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)  
k 6) Obtain f(x) = 20log 10 (E k ), where x = 20log 10 (l k ) (Fig. 1) 7) α 1 : angular coefficient of first-order approximation of f(x), for x s.t. 4 ≤ l k ≤ 16 8) α 2 : angular coefficient of first-order  ...  approximation of f(x), for x s.t. 16 ≤ l k ≤ N, where N is the length of RR(n) Figure 1 : 1 Calculating α 1 and α 2 : RMS approximation error vs. window length A Sliding Window Approach to DFA If N/  ... 
doi:10.1109/embc.2013.6610241 pmid:24110428 dblp:conf/embc/AlmeidaSC13 fatcat:st73uaeptjhm5epygov5yjcty4

Joint data and connection topology recovery in collaborative wireless sensor networks

Andre L. F. de Almeida, Alain Y. Kibangou, Sebastian Miron, Daniel C. Araujo
2013 2013 IEEE International Conference on Acoustics, Speech and Signal Processing  
S (l) 2 F , EΦ = 1 LM 2 L l=1 | Φ (l) − Φ|0, where L denotes the number of Monte Carlo runs, while S (l) and Φ (l) are the final estimates of the informative data and topology matrices at the l-th run  ...  For evaluating the accuracy of network data recovery and connection topology estimation, we calculate the following normalized error metrics: NUMERICAL RESULTS Some ES = 1 L L l=1 S (l) − S (l) 2 F  ... 
doi:10.1109/icassp.2013.6638675 dblp:conf/icassp/AlmeidaKMA13 fatcat:dw63j6zb55fevcdxgsxedfmuru

Physical Layer Secrecy Performance of TAS Wiretap Channels with Correlated Main and Eavesdropper Channels

Nuwan S. Ferdinand, Daniel Benevides da Costa, Andre L. F. de Almeida, Matti Latva-aho
2014 IEEE Wireless Communications Letters  
L. F. de Almeida are with the Wireless Telecom Research Group (GTEL), Federal University of Ceará (UFC), Ceará, Brazil (e-mail: {danielbcosta, andre.almeida}@ieee.org).  ...  ., F |hAB,s| 2 (x) = F |hAB,k| 2 (x) NA . Thus, by using multinomial theorem we obtain F |hAB,s| 2 (x) = 1−N A NA−1 n1=0 N A − 1 n 1 (−1) n1 Γ(m) m,n1 β+m−1 k=0 × (β + m − 1)! k!  ... 
doi:10.1109/wcl.2013.112313.130733 fatcat:g24kbtz33bfdxervig6lp7je7e

Suberoylanilide Hydroxamic Acid (Vorinostat) Up-regulates Progranulin Transcription

Basar Cenik, Chantelle F. Sephton, Colleen M. Dewey, Xunde Xian, Shuguang Wei, Kimberley Yu, Wenze Niu, Giovanni Coppola, Sarah E. Coughlin, Suzee E. Lee, Daniel R. Dries, Sandra Almeida (+7 others)
2011 Journal of Biological Chemistry  
F, resveratrol alone; ƒ, resveratrol ϩ 0.1 M SAHA; f, resveratrol ϩ 0.3 M SAHA; छ, resveratrol ϩ 0.5 M SAHA. F, SAHA and resveratrol have additive effects.  ...  F, SAHA alone; ƒ, SAHA ϩ 0.1 M resveratrol; f, SAHA ϩ 1 M resveratrol. FIGURE 3 . 3 HDAC inhibitors moderately decrease cell viability.  ... 
doi:10.1074/jbc.m110.193433 pmid:21454553 pmcid:PMC3091219 fatcat:2w6fwtccqrdbvfi2lgt6wcbbda
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