Juan Eloy Ruiz Castro
Department Statistics and Operational Research
University of Granada

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• Ruiz-Castro, J. E. and Zapata-Ceballos, H.A. (2025)
Algorithmic modelling of a complex redundant multi-state system subject to multiple events, preventive maintenance, loss of units and a multiple vacation policy through a MMAP. Mathematics and Computers in Simulation, 230, 165-192. DOI: 10.1016/j.matcom.2024.11.005.

• Acal, Ch.; Aguilera, A.M.; Alonso, F.J.; Ruiz-Castro, J. E. and Roldán, J.B. (2024)
Different PCA approaches for vector functional time series with applications to resistive switching processes. Mathematics and Computers in Simulation, 223, 288-298. DOI: 10.1016/j.matcom.2024.04.017.

• Acal, Christian; Contreras, Elena; Montero, Ismael and Ruiz-Castro, Juan Eloy (2024)
A shiny app for modelling the lifetime in primary breast cancers patients through phase-type distributions. Mathematical Biosciences and Engineering, 21, 1, 1508-1526. DOI: 10.3934/mbe.2024065.

• Ruiz-Castro, Juan Eloy; Acal, Christian and Roldán, Juan Bautista (2023)
An approach to non-homogeneous Phase-type distributions through multiple cut-points. Quality Engineering, 35, 4, 619-638. DOI: 10.1080/08982112.2023.2168202

• Ruiz-Castro, Juan Eloy and Acal, Christian (2022)
MMAPs to model complex multi-state systems with vacation policies in the repair facility. Journal of Reliability and Statistical Studies, 15, 2, 473-504. DOI: 10.13052/jrss0974-8024.1524

• Ruiz-Castro, Juan Eloy (2021)
One cut-point phase-type distributions in Reliability. An Application to resistive random access memories. Mathematics, 9, 21, 2734. DOI: 10.3390/math9212734

• Ruiz-Castro, Juan Eloy (2021)
Optimizing a multi-state cold-standby system with multiple vacations in the repair and loss of units. Mathematics, 9, 8, 913. DOI: 10.3390/math9080913

• Ruiz-Castro, Juan Eloy; Acal, Christian; Aguilera del Pino, Ana María; Roldán, Juan Bautista (2021)
A Complex Model Via Phase-Type Distributions to Study Random Telegraph Noise in Resistive Memories. Mathematics, 9, 4, 390. DOI: 10.3390/math9040390

• Pérez, Eduardo; Maldonado, David; Acal, Christian; Ruiz-Castro, Juan Eloy; Aguilera, Ana María; Jiménez, Francisco; Roldán, Juan Bautista; Wenger, Christian (2021)
Advanced temperature dependent statistical analysis of forming voltage distributions for three different HfO2-based RRAM technologies. Solid State Electronics, 176, 107961. DOI: 10.1016./j.sse.2021.107961

• Ruiz-Castro, J.E.; Acal-González, C.; Aguilera del Pino, A.M.; Aguilera-Morillo, M.C. and Roldán, J.B. (2021)
Linear-Phase-Type probability modelling of functional PCA with applications to resistive memories. Mathematics and Computers in Simulation, 186, 71-79. DOI: 10.1016/j.matcom.2020.07.006

• Ruiz-Castro, J.E.; Acal-González, C. and Aguilera del Pino, A.M. (2021)
Phase-Type distributions: computational aspects and applications in eletronics. Boletín de Estadística e Investigación Operativa (BEIO) (in press)

• Paula R. Bouzas, Nuria Ruiz-Fuentes, Carmen Montes-Gijón, Juan Eloy Ruiz-Castro (2021)
Forecasting counting and time statistics of compound Cox processes: a focus on intensity phase type process, deletions and simultaneous events. Statistical Papers, 62, 235-265. DOI: 10.1007/s00362-019-01092-0

• Ruiz-Castro, J.E. and Dawabsha, M. (2020)
A multi-state warm standby system with preventive maintenance, loss of units and an indeterminate multiple number of repairpersons.Computers & Industrial Engineering, 142, 106348, DOI: 10.1016/j.cie.2020.106348

• Ruiz-Castro, J.E. (2020)
A complex multi-state k-out-of-n: G system with preventive maintenance and loss of units. Reliability Engineering and System Safety, 197, 106797. DOI: 10.1016/j.ress.2020.106797

• Ruiz-Castro, J.E. and Zenga, Mariangela (2020)
A general piecewise multi-state survival model: Application to breast cancer. Statistical Methods & Applications, 29, 813-843. DOI: 10.1007/s10260-019-00505-6

• Ruiz-Castro, J.E. (2019)
A complex multi-state system with vacations in the repair. Journal of Mathematics and Statistics, 15, 225-232. DOI: 10.3844/jmssp.2019.225.232

• E. Pérez, D. Maldonado, C. Acal, J.E. Ruiz-Castro, F.J. Alonso, A.M. Aguilera, F. Jiménez-Molinos, Ch. Wenger, J.B. Roldán (2019)
Analysis of the statistics of device-to-device and cycle-to-cycle variability in TiN/Ti/Al:HfO2/TiN RRAMs. Microelectronic Engineering , 214, 1, 104-109. DOI: 10.1016/j.mee.2019.05.004

• Christian José Acal González, Juan Eloy Ruiz Castro, Ana María Aguilera del Pino (2019)
Distribuciones tipo fase en un estudio de fiabilidad. TEMat, 3. pdf

• Ruiz-Castro, J.E. and Dawabsha, M. (2019)
A discrete MMAP for analysing the behaviour of a multi-state complex dynamic system subject to multiple events. Discrete Event Dynamic Systems, 29, 1, 1-29. DOI: 10.1007/s10626-018-0274-0

• Christian Acal, Juan Eloy Ruiz-Castro, A.M. Aguilera, F. Jiménez-Molinos, J.B. Roldán (2019)
Phase-type distributions for studying variability in resistive memories. Journal of Computational and Applied Mathematics , 345, 23-32. DOI: 10.1016/j.cam.2018.06.010

• Ruiz-Castro, J.E.; Dawabsha, M. and Alonso, F.J. (2018)
Discrete-time markovian arrival processes to model multi-state complex systems with loss of units and an indeterminate variable number of repairpersons. Reliability Engineering and System Safety, 174, 114-127. DOI: 10.1016/j.ejor.2018.02.019

• Ruiz-Castro, J.E. and Dawabsha, M. (2018) Modelling a multi-state k-out-of-n: G system with loss of units. In: Reliability Engineering. Theory and Applications. Ilia Vonta and Mangey Ram(Eds). Taylor and Francis/CRC Press.

• Ruiz-Castro, J.E. (2018) A D-MMAP to model a complex multi-state system with loss of units. In: Recent advances in Multi-state systems Reliability. Anatoly Lisnianski, Ilia Frenkel and Alex Karagrigoriou (Eds), pp. 39-59. Springer.

• Ruiz-Castro, J.E. (2016)
Complex multi-state systems modelled through Marked Markovian Arrival Processes. European Journal of Operational Research, 252, 3,852-865. DOI: 10.1016/j.ejor.2016.02.007

• Ruiz-Castro, J.E. (2016)
Markov counting and reward processes for analyzing the performance of a complex system subject to random inspections. Reliability Engineering and System Safety, 145, 155-168. DOI: 10.1016/j.ress.2015.09.004

• Ruiz-Castro, J.E. (2015)
A multi-state cold standby system modelled through a Marked Markovian Arrival Process. In: Statistical, Stochastic and Data Annalysis Methods and Applications. ISAST: International Society for the Advancement of Science and Techonology.

• Ruiz-Castro, J.E. (2015)
A preventive maintenance policy for a standby system subject to internal failures and external shocks with loss of units. International Journal of Systems Science, 46, 9, 1600-1613. DOI: 10.1080/00207721.2013.827258

• Juan Eloy Ruiz-Castro, Ana M. Aguilera del Pino, Manuel Escabias Machuca, Rocío Raya Miranda and Javier García Montero (2014)
Can we learn statistics through a Tablet? Yes, we can: APPES. Boletín de Estadística e Investigación Operativa (BEIO) , 30, 2, 181-198.

• Ruiz-Castro, J.E. (2014)
Preventive maintenance of a multi-state device subject to internal failure and damage due to external shocks. IEEE Transactions on Reliability, 63, 2, 646-660. DOI: 10.1109/TR.2014.2315922

• Ruiz-Castro, J.E. (2013)
Matrix-exponential distributions: Closure properties. International Journal of Advanced Statistics and Probability, 1, 2, 44-52. DOI: PDF file

• Mendoza, N.; Ruiz-Castro, J.E. and Sánchez Borrego, R. (2013)
A multigenic combination of estrogen related genes are associated with the duration of fertility period in the Spanish population. Gynecological Endocrinology, 29, 3, 235-237. DOI: 10.3109/09513590.2012.736552

• Ruiz-Castro, Juan Eloy and Fernández-Villodre, Gemma (2012)
A complex discrete warm standby system with loss of units. European Journal of Operational Research, 218, 456-469. DOI: 10.1016/j.ejor.2011.11.020

• Ruiz Castro, Juan Eloy and Quan-Lin, Li (2011)
  Algorithm for a general discrete k-out-of-n: G system subject to several types of failure with an indefinite number of repairpersons. European Journal of Operational Research, 211, 1, 97-111. DOI: 10.1016/j.ejor.2010.10.024

• Nicolás Mendoza, Daniela Galliano, Alberto Salamanca, Juan Eloy Ruiz Castro, Juan Mozas, Rafael Sánchez-Borrego,  Francisco Quereda, Francisco Vázquez, Txantón Martínez-Astorquiza (2010)
Lowering the age at menarche and risk of early menarche in a population of Spanish postmenopausal women during the past two decades. Menopause International, 16, 111-114. DOI: 10.1258/mi.2010.010036

• Ruiz Castro, Juan Eloy; Fernández-Villodre, Gemma and Pérez Ocón, Rafael (2009)
  Discrete repairable systems with external and internal failures under phase-type distributions. IEEE Transactions on Reliability, 58, 1, 41-52. DOI: 10.1109/TR.2008.2011667

• Ruiz Castro, Juan Eloy; Fernández-Villodre, Gemma and Pérez Ocón, Rafael (2009)
  A Multi-Component General Discrete System Subject to Different Types of Failures with Loss of Units. Discrete Event and Dynamic Systems, 19, 31-65. DOI: 10.1007/s10626-008-0046-3

• Ruiz Castro, Juan Eloy; Fernández-Villodre, Gemma and Pérez Ocón, Rafael (2009)
  A level-dependent general discrete system involving phase-type distributions. IIE Transactions, 41, 1, 45-56. DOI: 10.1080/07408170802322663

• Ruiz Castro, Juan Eloy; Pérez Ocón, Rafael and Fernández-Villodre, Gemma (2008)
  Modelling a reliability system governed by discrete phase-type distributions. Reliability Engineering and System Safety, 93, 1650-1657. DOI: 10.1016/j.ress.2008.01.005

• Pérez Ocón, Rafael; Montoro Cazorla, Delia, Ruiz Castro, Juan Eloy (2006)
  Transient analysis of a multi-component system modelled by a General Markov Process. Asia-Pacific Journal of Operational Research, 23, 3, 311-327. DOI: 10.1142/S0217595906000954

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy (2004)
  Two models for a repairable two-system with phase-type sojourn time distributions. Reliability Engineering & System Safety, 84, 253-260. DOI: 10.1016/j.ress.2003.11.006

• Ruiz Castro, Juan Eloy; Pérez Ocón, Rafael (2004)
  A Semi-Markov Model in Biomedical Studies. Communication in Statistics: Theory and Methods, 33(2), 437-455. DOI: 10.1016/0010-4809(89)90001-3

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy (2003)
  A Multiple-Absorbent Markov Process in Survival Studies: Application to Breast Cancer. Biometrical Journal, 45,7, 783-797.

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy; Gámiz Pérez, M. Luz (2001)
  A piecewise Markov process for analysing survival from breast cancer in different risk groups. Statistics in Medicine, 20, 109-122. DOI: 10.1002/1097-0258(20010115)20:1<109::AID-SIM615>3.0.CO;2-N

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy; Gámiz Pérez, M. Luz (2001)
  Non-homogeneous Markov Models in the Analysis of Survival to Breast Cancer. Applied Statistics, 50, 1, 111-124.

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy; Gámiz Pérez, M. Luz (2000)
  Markov Model with Lognormal Transition Rates in the Analysis of Survival Times. TEST, 9, 2, 353-370.

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy; Gámiz Pérez, M. Luz (1999)
  Semi-Markov Models for Lifetime Data Analysis. In: Semi-Markov Models and Applications, Eds. J. Janssen and N. Limnios, Kluwer Academic Publishers, Dordrecht, The Nederlands, 229-238.

• Pérez Ocón, Rafael; Ruiz Castro, Juan Eloy; Gámiz Pérez, M. Luz (1998)
  A Multivariate Model to Measure the Effect of Treatments in Survival to Breast Cancer. Biometrical Journal, 40, 6, 703-715.

• Pérez Ocón, Rafael; Gámiz Pérez, M. Luz; Ruiz Castro, Juan Eloy (1998)
  A Study of Different Ageing Classes Via Total Time on Test Transform and Lorenz Curves. Applied Stochastic Models and Data Analysis, 13, 241-248.

• Pérez Ocón, Rafael; Gámiz Pérez, M. Luz; Ruiz Castro, Juan Eloy (1996)
  Aplicación de Técnicas Gráficas en el Estudio de Tiempos de Supervivencia. Estadística Española, 38, 141, 5-18.

Get in touch with me