Azerbaijan State Oil and Industry University

HYBRID GRAPH NEURAL NETWORKS AND XGBOOST FOR FRAUD TRANSACTION DETECTION

Detecting financial fraud in cryptocurrency networks like bitcoin is a significant challenge.The problem is that traditional machine learning models often fail to capture the complex relational patterns within transaction graphs, leading to poor detection.The purpose of this rese...

Bluetooth Stack Gaps in Automotive IVI: Mapping BlueSDK (PerfektBlue) Vulnerabilities to the CIA Triad

Bluetooth is a widely used wireless interface for in-vehicle infotainment (IVI) systems, yet the security posture of the embedded stacks that implement it rarely receives the same scrutiny as the protocol itself. This paper analyzes OpenSynergy's BlueSDK, a closed-source Bluetoot...

UAV-based deep learning and spatial analysis for mapping coastal plastic debris distribution

Plastic waste accumulation is a major environmental challenge in enclosed and semi-enclosed coastal basins where restricted hydrodynamic exchange can promote long-term litter retention. This study assesses surface macroplastic litter along the Neftchala shoreline of the western C...

Integration of concentrated solar power plants with 5th generation district heating systems using waste heat recovery: A techno-economic and environmental analysis

The decarbonization of district heating systems remains a major challenge due to the continued reliance on fossil fuels for heat supply. This study proposes an integrated concentrated solar power (CSP) and fifth-generation district heating (5GDH) system that directly utilizes the...

Dielectric Properties of Tl-Doped GaSe Single Crystals: Frequency Dispersion and Relaxation Processes

Abstract – The dielectric properties of Tl-doped ε-GaSe (ε-GaSe〈Tl〉) single crystals in alternating electric fields were investigated. The frequency dispersion of the complex dielectric permittivity was analyzed using the Havriliak–Negami (HN) formalism in combination with the...

A Mathematical Model for Predicting the Viscosity of Oil Emulsions as a Function of Water Cut

The formation of oil–water emulsions following reservoir-water breakthrough is widely observed during oil production. The viscosity of these polydisperse systems may increase sharply with increasing water cut, creating substantial operational difficulties in well-gathering system...

Investigation of the Semiconductor Properties and Chronoamperometry of BI2SE3 Thin Films Obtained by Electrochemical Deposition

Thin Bi2Se3 films were successfully electrodeposited from a non-aqueous ethylene glycol-based electrolyte and subsequently underwent thermal treatment in an Ar atmosphere to improve crystallinity. The phase and compositional properties of the films were characterized by X-ray dif...

Does Government Environmental Spending Crowd in Green Investment? The Role of Carbon Pricing and the Limits of Fiscal Policy Alone

Governments around the world are spending more on environmental protection, but it is far from obvious that this spending pulls private capital into green assets. This paper asks whether government environmental expenditure crowds in green investment at the country level, whether...

FTIR–XRD comparative study of pyrolysis residues obtained from plastic waste

This study examines the thermal degradation of PET-1 plastic waste containers (SIRAB, Azerbaijan) using FTIR spectroscopy and XRD analysis. Samples were pyrolyzed at 350°C, 450°C, and 550°C for 1 h under inert conditions. XRD results show a progressive loss of crystallinity with...