Helena Ribeiro

According to our database, Helena Ribeiro authored at least 8 papers between 2008 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2024

Enhancement of RF-DC Converters Efficiency by Input Impedance Optimization.

Helena Ribeiro, Diogo Matos, Nuno Borges Carvalho, Apostolos Georgiadis

IEEE Access, 2024

2023

Ultralow Read Sensitivity RFID sensor based on Tunnel Diode Voltage-Controlled Oscillator.

Yero Dia, Helena Ribeiro, Laurent Oyhenart, Elie Zaraket, Jean-Luc Lachaud, Ludivine Fadel, Valerie Vigneras, Corinne Dejous, Nuno Carvalho, Simon Hemour

Proceedings of the 2023 IEEE 13th International Conference on RFID Technology and Applications (RFID-TA), 2023

2021

Distribution of the number of losses in busy-periods of oscillating MX/G/1/(n, a, b) systems.

Fátima Ferreira, António Pacheco, Helena Ribeiro

Comput. Oper. Res., 2021

2020

Numbers of Served and Lost Customers in Busy-Periods of M/M/1/n Systems with Balking.

Fátima Ferreira, António Pacheco, Helena Ribeiro

Proceedings of the Computational Science and Its Applications - ICCSA 2020, 2020

2017

Moments of losses during busy-periods of regular and nonpreemptive oscillating M^X/G/1/n systems.

Fátima Ferreira, António Pacheco, Helena Ribeiro

Ann. Oper. Res., 2017

2016

On the Blocking Probability and Loss Rates in Nonpreemptive Oscillating Queueing Systems.

Fátima Ferreira, António Pacheco, Helena Ribeiro

Proceedings of the Analytical and Stochastic Modelling Techniques and Applications, 2016

2008

Consecutive customer losses in regular and oscillating M^X/G/1/n systems.

António Pacheco, Helena Ribeiro

Queueing Syst. Theory Appl., 2008

Consecutive customer losses in oscillating <i>GI</i> ^<i>X</i>/ <i>M</i> // <i>n</i> systems with state dependent services rates.

António Pacheco, Helena Ribeiro

Ann. Oper. Res., 2008