Amar Telidji University of Laghouat

Hierarchical multi-fault diagnosis of IPMSM drives using speed-normalized wavelet features and random forests

Purpose Interior permanent magnet synchronous motor (IPMSM) drives may hold speed regulation even after electrical or mechanical faults have changed the stator-current signature. This paper aims to develop a ten-class diagnosis framework that separates healthy, single-fault and c...

Scalable Multi-UAV Target Assignment via Permutation-Invariant Reinforcement Learning and Conditional Control-Barrier-Function Safety Filtering

Coordinating multiple unmanned aerial vehicles (UAVs) to assign targets and generate collision-free trajectories in dynamic, obstacle-dense environments is a challenging problem with applications in search-and-rescue, surveillance, and precision agriculture. Existing deep reinfor...

Inter-generational transmission of sports practice in Algerian families: Habitus formation, capital mobilisation and social reproduction

This study examines inter-generational transmission of sports practice in Algerian families through a sequential explanatory mixed-methods design. The quantitative phase applied propensity score-matched binary logistic regression across 480 families (240 sport-participating; 240...

Bladder wash as an alternative biological matrix for postmortem toxicology: A critical mini-review

Bladder wash has recently emerged as a potential alternative specimen in postmortem toxicology when urine is unavailable due to agonal bladder emptying, trauma, decomposition or other autopsy-related limitations. This critical mini-review evaluates the forensic relevance, analyti...

Hygiene and industrial safety education in Algeria: An assessment of university curriculum and student perceptions

Process safety education is essential for preparing engineers to manage risks in high-hazard industries. In Algeria, process safety competencies are primarily addressed through Industrial Hygiene and Safety (HSI) programs, although no dedicated process safety specialization curre...

Two Corrections to the Heisenberg Example and Sobolev Formulation in The Work of Hong Wang

This correction note identifies two local formulation errors in Christopher D. Sogge’s survey The Work of Hong Wang, arXiv:2609.40161v1 (30 September 2026). The displayed four-real-parameter Heisenberg family has only three real parameters of complex directions, so it cannot prov...

Two Corrections to the Heisenberg Example and Sobolev Formulation in The Work of Hong Wang

This correction note identifies two local formulation errors in Christopher D. Sogge’s survey The Work of Hong Wang, arXiv:2609.40161v1 (30 September 2026). The displayed four-real-parameter Heisenberg family has only three real parameters of complex directions, so it cannot prov...

A counterexample and a controller correction for global synchronization of the fractional Newton–Leipnik reaction–diffusion system

This independent technical note examines the controller printed in equation (26) and the global synchronization assertion of Theorem 5.3 in Mansouri, Bendoukha, Abdelmalek and Youkana, Applicable Analysis 100 (2021), 675–694, DOI: 10.1080/00036811.2019.1616694. An incorrect produ...

Counterexamples and controller corrections for full-state hybrid projective synchronization of discrete systems

This independent mathematical correction note examines the printed controllers and global synchronization claims in Adel Ouannas, “On Full-State Hybrid Projective Synchronization of General Discrete Chaotic Systems,” Journal of Nonlinear Dynamics (2014), Article ID 983293, DOI: 1...

A correction note on normalization and auxiliary estimates in Sharp volume bounds for BRK-type sets of surfaces of revolution

This independent correction note examines auxiliary assertions in Xianghong Chen and Tongou Yang, “Sharp volume bounds for BRK-type sets of surfaces of revolution,” arXiv:2609.39059v1 (30 September 2026). A family of shrinking spheres satisfies a common neighborhood-intersection...

Pediatric cancer refractive-index sensing with a deep learning-enhanced far-infrared highly sensitive spoof surface plasmon polariton metasurface absorber

Pediatric cancers remain a primary cause of childhood mortality globally, yet early detection is frequently hindered by overlapping clinical symptoms and the limitations of conventional diagnostic methods; we propose a highly sensitive spoof surface plasmon polaritons (SSPP)-base...

A Unified Algebraic Framework for Hedge Automata Using Horizontal Language Expressions

This paper presents a unified algebraic and computational framework for classical hedge automata and related algebraic structures. The framework extends the open-source TARgET library with support for hedge-based structures. The formal development discusses classical hedge automa...

Molecular Hybridization-Guided Design and Synthesis of Novel Pyrazolylidene–Thiazolopyrimidine Derivatives

Abstract The development of hybrid heterocyclic scaffolds represents an effective strategy for expanding the structural diversity of heterocyclic compounds. Herein, we report the synthesis of a new series of pyrazolylidene–thiazolopyrimidine hybrids through a concise and efficien...

Vibration Analysis of 2D Porous Functionally Graded Beams With Inclined Cracks Under Thermo‐Hygro‐Mechanical Coupling

ABSTRACT This work provides an in‐depth investigation into wave propagation in functionally graded material (FGM) beams subjected to coupled thermo‐hygro‐mechanical loading. The proposed model explicitly accounts for the presence of cracks, material porosity, axial pre‐stress, an...

Beyond static validation: DRL reliability under temporal drift for edge-AI intrusion detection in cyber-physical-social systems

Purpose Edge-AI intrusion detection in cyber-physical-social systems (CPSS) must operate under temporal drift while respecting strict low-false-positive-rate (low-FPR) budgets. This study aims to evaluate whether a deep reinforcement learning intrusion detector, RO-DDDQN, provide...

A Global Lyapunov Resolution of the Zeraoulia–Sprott HIV-Therapy Conjecture

We study the autonomous three-dimensional HIV dynamics model formed by the concentrations of CD4 lymphocytes, CD8 lymphocytes, and the HIV-1 viral load. Zeraoulia and Sprott conjectured, on the basis of numerical evidence, that the system is nonchaotic for every positive choice o...

A local concentration correction in Hua and Yang's cellular Kakeya reduction

This technical note concerns equation (9.5c0), page 40, of Hua and Yang's Cellular Maximal-Density Factoring and a Conditional Repair of the Streamlined Three-Dimensional Kakeya Reduction, arXiv:2608.18870v3 (26 August 2026). A singleton fine tube inside one coarse tube gives an...

Boundary Matching Multiplicity from Orthogonal Signings: Determinant Bounds, Stability, and Refined Cube Certificates

Let W be a Hermitian matrix supported on a graph G and satisfying W² = αI. Across a cut V(G) = S ⊔ T, the identity BB* = αI − A² gives a rank certificate. This manuscript develops local Hall-profile bounds via principal Gram matrices and quadratic effective rank, an elementary Ca...

Active Disturbance Rejection Control for Robust DC Bus Regulation in Standalone Multistage Inverters

ABSTRACT This paper addresses DC bus voltage regulation in standalone multistage inverters, where the DC‐DC stage must maintain a stable bus voltage despite input voltage fluctuations, unpredictable load changes, and model uncertainties. An Active Disturbance Rejection Control (A...

Well-posedness and exponential stability of solutions for piezoelectric beams under magnetic, delay and thermodiffusion effects

In this paper, we investigate the well-posedness and the asymptotic behavior of solutions to piezoelectric beams under magnetic, delay, and thermodiffusion effects. First, we establish the existence and uniqueness of solutions by applying semigroup theory. Then, using a perturbed...