University of Boumerdes

On the Coexistence of Two Limit Cycles Enclosing a Node in a Class of Planar Differential Systems of Degree Six

ABSTRACT In this paper, we look at a special type of six‐degree polynomial differential systems in the plane. We establish the coexistence of two limit cycles in these systems, both surrounding a single node. It is well known that, for systems of even degree, proving the coexiste...

From Automation to Augmentation: How AI Reshapes Human Resource Slack in Algerian Telecommunications Companies

This supplementary document accompanies the article “From Automation to Augmentation: How AI Reshapes Human Resource Slack in Algerian Telecommunications Companies.” The document contains two appendices. Appendix A reproduces the questionnaire administered to respondents, includi...

From Automation to Augmentation: How AI Reshapes Human Resource Slack in Algerian Telecommunications Companies

This supplementary document accompanies the article “From Automation to Augmentation: How AI Reshapes Human Resource Slack in Algerian Telecommunications Companies.” The document contains two appendices. Appendix A reproduces the questionnaire administered to respondents, includi...

Contribution to the knowledge of the distribution of bats (Chiroptera) in Algeria

Algeria is the largest country in Africa and for the most part has not yet been surveyed for bat species. To contribute to the knowledge of the distribution of Algerian bat fauna, between 2011 and 2026 we surveyed 70 sites from 19 provinces across the country, mostly roost sites...

First-Principles Evaluation of Thermal Neutron Scattering and Cross Sections in Beryllium Oxide

This work addresses the long-standing uncertainty in the thermal neutron scattering description of beryllium oxide (BeO), a key moderator and reflector material in advanced reactors. Conventional evaluations rely on semi-empirical phonon models that misrepresent the phonon gap an...

Advanced MPPT Optimization for PV Water Pumping with Battery Storage and MPC-Driven BLDC Motor via Swarm and Evolutionary Algorithms

Photovoltaic (PV) pumping systems offer a sustainable alternative to diesel solutions, yet their nonlinearity, intermittent irradiation, and complex motor-pump dynamics challenge energy extraction and reliability. Currently, these systems predominantly rely on classical Maximum P...

A machine learning framework for classifying inter-turn short-circuit faults in induction motors

Inter-turn short-circuit (ITSC) faults are among the most frequent stator winding faults in induction motors, often leading to irreversible damage. In this context, this work proposes a Machine Learning (ML) based framework for classifying ITSC faults using experimental stator cu...

Renovating a gas turbine power plant to a cogeneration system for district heating in Algeria: Performance evaluation of the upgraded CHP

This study presents an integrated assessment of waste heat recovery from an existing Algerian gas turbine (GT) power plant retrofitted as a Combined Heat and Power (CHP) system for District Heating (DH) applications. Unlike conventional studies that assess thermodynamic performan...