PUBLICAÇÕES - 2013 - 2022

Accepted for Publication


  • MOTA, A. L. ; Milani, E. A. ; LEÃO, JEREMIAS ; RAMOS, PEDRO L. ; FERREIRA, P. H. ; Gonzatto-Junior, O. A. ; TOMAZELLA, V. L. D. ; Louzada, Francisco . A new cure rate frailty regression model based on a weighted Lindley distribution applied to stomach cancer data. Statistical Methods and Applications, 2022.

  • Boaventura, L. L. ; Ferreira, P. H. ; Fiaccone, R. L. ; Ramos, P.L. ; Louzada, F. . New statistical process control charts for overdispersed count data based on the Bell distribution. Annals of the Brazilian Academy of Sciences, 2022.

  • Souza, A. ; Abreu, M. C. ; Oliveira-junior, J. F. ; Ramos, P.L. ; Santos, D. A. S. ; Louzada, F. ; Silva, E. B. ; Lins, T. M. P. . Statistical modeling of hospital admissions for pneumonia in children and adults. REVISTA DE EPIDEMIOLOGIA E CONTROLE DE INFECÇÃO, 2022.

Online First

  • Ramos, P.L, Rodrigues F. Ramos, E., Dey D. Louzada, F. Power laws distributions in objective priors. Statistica Sinica. v34(1), p. 1-53, 2024. DOI

  • Tomazella, V. L., Ramos, P.L., Ferreira, P. H., Mota, A. L., Louzada, F. The Lehmann type II inverse Weibull distribution in the presence of censored data. Communications in Statistics-Simulation and Computation, 1-17, 2020. DOI

  • Haq, M. A. U. ; Hashmi, S. ; Aidi, K. ; Ramos, P.L. ; Louzada, F. Unit Modified Burr-III Distribution: Estimation, Characterizations and Validation Test. Annals of Data Science, p. 1-26, 2020. DOI


  • Souza, H. C. C. ; Louzada, F. ; Ramos, P. L. ; Oliveira, M. R. ; Perdona, G. S. C. . A Bayesian approach for the zero-inflated cure rate model: An application on a Brazilian invasive cervical cancer data. Journal of Applied Statistics, , 49(12), 3178-3194, 2022. DOI

  • Chesneau, C.; Bakouch, H. S.; Ramos, P.L.; Louzada, F. The polynomial-exponential distribution: a continuous probability model allowing for occurrence of zero values  Communications in Statistics - Simulation and Computation, 51(8), p. 4581-4606, 2022. DOI

  • Jesus, B. D. ; Ferreira, P. H. ; Boaventura, L.L. ; Fiaccone, R. L. ; Bertoli, W. ; Ramos, P. L. ; Louzada, F.  Statistical process control of overdispersed count data based on one-parameter Poisson mixture models. Quality and Reliability Engineering International, 38 (5), 2324-2344 2022. DOI

  • Ianishi, P., Junior, O.A.G., Henriques, M.J., do Nascimento, D.C., Mattar, G.K., Ramos, P.L., Ara, A. and Louzada, F., Probability on Graphical Structure: A Knowledge-Based Agricultural Case. Annals of Data Science, 9, 327–345, 2022. DOI

  • Ahsan-ul-Haq, M., Ahmed, M., Zafar, J., & Ramos, P.L.. Modeling of COVID-19 Cases in Pakistan Using Lifetime Probability Distributions. Annals of Data Science, 9(1),  141–152, 2022. DOI

  • Ramos, P.L.; Almeida M.; Moala, F.A. Flores, E.; Louzada, F. Objective Bayesian inference for the Capability index of the Weibull distribution and its generalization, Computers & Industrial Engineering, 167, 108012, 2022. DOI

  • Louzada, F. ; Gonzatto, O.A. ; Tomazella, V.L.D. ; Milani, E.A. ; Ferreira, P.H. ; Ramos, P.L. ; Bochio, G. ; Magalhaes, Reliability assessment of repairable systems with series-parallel  structure subjected to hierarchical competing risks under minimal repair regime. Reliability Engineering & System Safety, 2022. DOI


  • Ramos, P.L.; Dey, D. K. ; Ramos, E. ; Louzada, F. . On Posterior Properties of the Two Parameter Gamma Family of Distributions. Annals of the Brazilian Academy of Sciences,  93(3), e20190826. 2021.

  • D'Andrea, A., Aljohani, H.A., Ramos PL, Almeida, M.P., Gazon, A.,Wruck, B.Tomazella VLD, Louzada F. Afify, A. Objective bayesian analysis for multiple repairable systems. PLoS ONE 16(11): e0258581. 2021. DOI

  • Ramos, P.L.; Louzada, F.  A note on the exponential geometric power series distribution. Communications in Statistics - Simulation and Computation, 50:11, 3794-3798, 2021. DOI

  • Mota, A. ; Milani, E. A. ; Casalvara, V. F. ; Tomazella, V. L. D. ; Leão, J. S. ; Ramos, P. L. ; Ferreira, P. H. ; Louzada, F. . Weighted Lindley frailty model: estimation and application to lung cancer data. Lifetime Data Analysis, 27, p.561–587 2021. DOI

  • Pobocikova, I. ; Souza, A. ; Abreu, M. C. ; Oliveira-junior, J. F. ; Santos, C. M. ; Ramos, P.L. ; Aristone, F.  The Impacts Of Climate Change On Rainfall Modeling In The Pantanal Of Mato Grosso Do Sul: Modeling Of Precipitation In The Pantanal. Acta Scientiarum-Technology, 2021. DOI

  • Louzada F, Cuminato JA, Rodriguez OMH, Tomazella VLD, Ferreira PH, Ramos PL, et al. (2021) Improved objective Bayesian estimator for a PLP model hierarchically represented subject to competing risks under minimal repair regime. PLoS ONE 16(8): e0255944. DOI

  • Ramos, P.L. ; Costa, L.F. ; Louzada, F.. ; Rodrigues, F. Power laws in the Roman Empire: a survival analysis, Royal Society Open Science,  8(7):210850,  2021. DOI

  • Almeida M.; Ramos, P.L.; Gadde, S.R; Moala, F.A. Objective Bayesian Inference for the Capability Index of the Gamma Distribution, Quality and Reliability Engineering International, 37(5), p.2235-2247, 2021. DOI

  • Nascimento, D.C.; Ramos P.L.; Elal-Olivero D.; Cortes-Araya M.; Louzada, F. Generalizing Normality: Different Estimation Methods for Skewed Information. Symmetry, 13, p.1067, 2021. DOI

  • Morita, L. H. M. ; Tomazella, V. L. D. ; Ferreira, P. H. ; Ramos, P.L.;  Balakrishnan, N. ; Louzada, F. Optimal burn-in policy based on a set of cutoff points using mixture inverse Gaussian degradation process and copulas, Applied Stochastic Models in Business and Industry, 37(3), p.612-627, 2021. DOI

  • Tomazella, V.L.D., Jesus, S.R., Gazon, A.B., Louzada, F., Nadarajah, S., Nascimento, D.C., Rodrigues, F.A. and Ramos, P.L. Bayesian Reference Analysis for the Generalized Normal Linear Regression Model. Symmetry, 13(5), p.856. 2021. DOI

  • Ramos, P.L., Mota, A. L., Ferreira, P. H., Ramos, E., Tomazella, V. L., Louzada, F. Bayesian analysis of the inverse generalized gamma distribution using objective priors. Journal of Statistical Computation and Simulation, 91(4), 786-816, 2021. DOI

  • Morita, L. H. M. ; Tomazella, V. L. D. ; Balakrishnan, N. ; Ramos, P.L.; Ferreira, P. H. ; Louzada, F. Inverse Gaussian process model with frailty term in reliability analysis. Quality and Reliability Engineering International, 37, p. 763–784, 2021. DOI

  • Morita, L. H. M. ; Tomazella, V. L. D. ; Ramos, P.L.; Ferreira, P. H. ; Louzada, F. . The random deterioration rate model with measurement error based on the inverse Gaussian distribution. Brazilian Journal of Probability and Statistics, v. 35, p. 187-204, 2021. DOI

  • Mota, A.; Ramos, P.L.; Ferreira, P.; Tomazella, V.;  Louzada, F. A Reparameterized Weighted Lindley Distribution: Properties, Estimation and Applications. Revista Colombiana de Estadística, 44(1), 65-90, 2021.​ DOI


  •  Louzada, F. ; Ramos, E.; Ramos, P. L. Contributed Discussion on 'On a Class of Objective Priors from Scoring Rules'. Bayesian Analysis, v. 15, p. 1403-1405, 2020.

  • Nascimento, D.C.D., Ramos, P.L., Ennes, A., Cocolo, C., Nicola, M.J., Alonso, C., Ribeiro, L.G. and Louzada, F., A reliability engineering case study of sugarcane harvesters. Gestao & Producao, 27(4), 2020. 

  • Louzada, F., Ramos, P.L., Ferreira, P. H.  The long-term inverse Nakagami distribution: Properties, inference and application. Ciência e Natura, 42, 2, 2020.

  • Almeida, M. P. ; Paixao, R. ; Ramos, P.L. ; Tomazella, V. L. D. ; Ehlers, R. S.; Louzada, F. Bayesian non-parametric frailty model for dependent competing risks in a repairable systems framework. Reliability Engineering & System Safety, v. 204, p. 107145, 2020.

  • Ramos, E. ; Ramos, P.L. ; Louzada, F. Posterior Properties of the Weibull Distribution for Censored Data. Statistics & Probability Letters, v. 166, p. 108873, 2020.

  • Louzada, F. ; Cuminato, J.A. ; Rodriguez, O.M.H. ; Tomazella, V.L.D. ; Milani, E.A. ; Ferreira, P.H. ; Ramos, P.L. ; Bochio, G. ; Perissini, I.C. ; Gonzatto, O.A. ; Mota, A.L. ; Alegria, L.F.A. ; Colombo, D.; Oliveira, P.G.O. ; Santos, H. ; Magalhaes, M. . Incorporation of frailties into a non-proportional hazard regression model and its diagnostics for reliability modeling of downhole safety valves. IEEE Access, v. 8, p. 219757 - 219774, 2020.

  • Ramos, P.L.; Ramos, E. ; Louzada, F. . Bias reduction in the closed-form maximum likelihood estimator for the Nakagami-m Fading Parameter. IEEE Wireless Communications Letters, v. 99, p. 1-4, 2020.

  • Ferreira, P. H., Ramos, E., Ramos, P.L., Gonzales, J. F., Tomazella, V. L., Ehlers, R. S., $\ldots$ & Louzada, F. (2020). Objective Bayesian analysis for the Lomax distribution. Statistics & Probability Letters, 159, 108677. 

  • Tomazella, V. L. D.; Jesus, S. R.; Louzada, F.; Ramos, P.L.; Nadarajah, S. Reference Bayesian analysis for the generalized lognormal distribution with application to   survival data, Statistics and its Interface, 13 (1), 139-149, 2020. 

  • Ramos, P.L.; Dey, D. K. ; Louzada, F. ; Lachos, V. H. .  An extended Poisson family of life distribution: a unified approach in competitive and complementary risks. Journal of Applied Statistics, 47 (2), 306-322, 2020. 

  • Ramos, P. L.; Moala F. A. ; Louzada F. . A Two-Parameter Distribution with Increasing and Bathtub Hazard Rate. JOURNAL OF DATA SCIENCE (PRINT), v. 18, p. 813-827, 2020.

  • Louzada, F.; Ramos, P.L.; Ferreira, P. H. Exponential-Poisson  Distribution:  Estimation  and  Applications  to  Rainfall  and  Aircraft  Data  With  Zero Occurrence. Communications in Statistics-Simulation and Computation, 49 (4), 1024-1043, 2020. 

  • Ramos, P.L.; Louzada, F.; Ramos, E.; Dey, S. The  Frechet  distribution:  Estimation  and  Application  an  Overview.  Journal of Statistics and Management Systems.,  23 (3), 549–578, 2020. 

  • Ramos, P.L.; Nascimento, D. C. ; Fernandes, R. ; Guimaraes, E. ; Santana, M. ; Soares, K. ; Louzada, F. . Medical care in emergency units with risk classification: time to attendance at a hospital based on parametric models. Trends in Applied and Computational Mathematics, 2020. 

  • Haq, M. A. U., Hamedani, G. G., Elgarhy, M., Ramos, P.L. Marshall-Olkin Power Lomax distribution: Properties and estimation based on complete and censored samples. Int. J. Stat. Probab, 9(1), 48, 2020.


  • Louzada, F.; Ramos, P.L.; Ramos, E. A Note on Bias of Closed-Form Estimators for the Gamma Distribution Derived from Likelihood Equations. American Statistician. V.71 , p.195- 199, 2019. 

  • Louzada, F; Cuminato, J; Rodriguez, O.M.H; Tomazella, V.L.; Ferreira, P.H ; Ramos, P.L.; Niaki, S.R.; Junior, O.A; Perissini, I.; Alegria, L.F.; Colombo, D.; Martins, D.; Santos, H.   A Repairable System Subjected to Hierarchical Competing Risks: Modeling and Applications, 7 (1), 171707 - 171723, IEEE Access, 2019. 

  • Ramos, P.L.; Nascimento, D. C. ; Ferreira, P. H. ; Tavares, K. ; Santos, T. E.G. ; Louzada, F. Modeling traumatic brain injury lifetime data: Improved estimators for the Generalized Gamma distribution under small samples. PLoS One, v. 14, p. e0221332, 2019. 

  • Ramos, P.L.; ALMEIDA, M. P. ; Tomazella, V. L. D. ; Louzada, F.  Improved Bayes estimators and prediction for the Wilson-Hilferty distribution. Annals of the Brazilian Academy of Sciences, v. 91, p. e20190002, 2019. 

  • Nascimento, D. C. ; BARBOSA, B. ; PEREZ, A. ; CAIRES, D. O. ; Ramos, P.L. ; Louzada, F.   Risk management in e-commerce: a study case fraud using acoustic analysis, Entropy, 21(11), 1087, 2019. 

  • Saboor, A.; Khan, M. N.; Cordeiro, G. M.; Pascoa, M. A. R.; Ramos, P.L.; Kamal, M. Some new results for the transmuted generalized gamma distribution. Journal of Computational and Applied Mathematics. , v.352, p.165 - 180, 2019. 

  • Ramos, P.L.; Louzada, F. A Distribution for Instantaneous Failures. Stats, v.2, p.247 - 258, 2019. 

  • Ramos, M. M. A.; Ramos, P.L.; Louzada, F.; DELLA-BARBA, P. C. S. Using Software R in research in occupational therapy. Brazilian Journal of Occupational Therapy, v.27, p.217-230, 2019. 

  • Ramos, P.L.; Louzada, F.; Shimizu, T. K. O.; Luiz, A. O. The inverse weighted Lindley distribution: Properties, estimation and an application on a failure time data. Communications in Statistics - Theory and Methods. v48, p. 2372-2389, 2019. 


  • Ramos, P.L.; Louzada, F.; Ramos, EDUARDO Posterior  Properties  of  the  Nakagami-m  Distribution  Using  Non-informative  Priors  and  Applications  in Reliability. IEEE Transactions on Reliability, v.67, p.105 - 117, 2018. 

  • Louzada, F.; Ramos, P.L. Efficient  closed-form  maximum  a posteriori  estimators  for  the  gamma  distribution.  Journal of Statistical Computation and Simulation, v.88, p. 1134-1146, 2018. 

  • Louzada, F.; Ramos, P.L.; Nascimento, D. C. The  Inverse  Nakagami-m  Distribution:  A  Novel  Approach  in  Reliability.  IEEE Transactions on Reliability. v67, p. 1030-1042, 2018. 

  • Ramos, P.L.; Louzada, F. Bayesian reference analysis for the Generalized Gamma distribution. IEEE Communications Letters, v.22, p. 1950-1953, 2018. 

  • Ramos, P.L.; Nascimento, D.C.; Cocolo, C.; Nicola, M.J.; Alonso, C.; Ribeiro, L.G.; Ennes, A.; Louzada, F. Reliability-Centered Maintenance: Analyzing Failure in Harvest Sugarcane Machine Using Some Generalizations of the Weibull Distribution. Modelling and Simulation in Engineering, v.2018, p.1 - 12, 2018. 

  • Rodrigues, G.C; Louzada, F.; Ramos, P.L. Poisson-exponential distribution: different methods of estimation. Journal of Applied Statistics. , v.45, p.128 - 144, 2018. 


  • Louzada, F.; Ramos, P.L. A New Long-Term Survival Distribution. Biostatistics and Biometrics Open Access Journal, v.1, p.1 - 6, 2017.  

  • Bakouch, H. S.; Dey, S.; Ramos, P.L.; Louzada, F. Binomial-Exponential 2 Distribution: Different Estimation Methods and Weather Applications. Trends in Applied and Computational Mathematics, v.18, p.0233, 2017. 

  • Ramos, P.L.; Nascimento, D. C.; Louzada, F. The  Long  Term  Fréchet  Distribution:  Estimation,  Properties  and  Its  Application.  Biometrics e Biostatistics International Journal, v.6, p.1 - 6, 2017. 

  • Ramos, P.L.; Louzada, F.; Cancho, V. G. Maximum Likelihood Estimation for the weighted Lindley Distribution Parameters under Different Types of Censoring. Revista Brasileira de Biometria, v.35, p.116 - 132, 2017. 

  • Achcar, J. A.; Ramos, P.L.; Martinez, E. Z. Some computational aspects to find accurate estimates for the parameters of the generalized gamma distribution. Pesquisa operacional, v.37, p.365 - 385, 2017. 

  • Ramos, P.L.; Achcar, J.A.; Moala, F.A.; Ramos, E; Louzada, F. Bayesian analysis of the generalized gamma distribution using non-informative priors. Statistics, v.51, p. 824-843., 2017. 

  • Dey, S; Kumar, D.; Ramos, P.L.; Louzada, F. Exponentiated    Chen    Distribution:    Properties    and Estimation. Communications    in Statistics - Simulation and Computation, v.46, p. 8118-8139, 2017. 


  • Ramos, P.L.; Louzada, F.; Ramos, E. An Efficient, Closed-Form MAP Estimator for Nakagami-m Fading Parameter. IEEE Communications Letters, v. 20, p. 2328-2331, 2016. 

  • Ramos, P.L.; Louzada, F. The generalized weighted Lindley distribution: Properties, estimation and applications. Cogent Mathematics, v.3, p.1 - 24, 2016.

  • Louzada, F.; Ramos, P.L. Different Estimation Procedures for the Parameters of the Extended Exponential Geometric Distribution for Medical Data. Computational and Mathematical Methods in Medicine (Print), v.2016, p.1 - 12, 2016.

  • Ramos, P.L.; Louzada, F. Comments on The Exponentiated Inverted Weibull Distribution-.     Applied Mathematics & Information Sciences (Print), v.10, p.1641 - 1643, 2016. 

Before - 2015

  • Ramos, P.L.; Moala, F. A.; Achcar, J. A. Objective Priors for Estimation of Extended Exponential Geometric Distribution. Journal of Modern Applied Statistical Methods, v.13, p.226 - 243, 2014. 

  • Moala, F. A.; Ramos, P.L.; Achcar, J. A.Bayesian  Inference  for  Two-Parameter  Gamma  Distribution  Assuming  Different  Noninformative Priors. Revista Colombiana de Estadistica, v.36, p.321 - 338, 2013. 

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