Satbayev University

Behavioral Financial Signals and Explainable AI in Credit Risk Assessment: Evidence from Utility Arrears and Gambling Activity

Traditional consumer credit scoring models frequently fail to identify rising default risks in transition economies because they rely almost exclusively on formal macroeconomic indicators and unchanging demographic data. This paper offers a preliminary empirical assessment of dig...

Study of the Stability of Parameters of Red-Range Semiconductor Laser Emitters for Fiber-Optic Sensors of Monitoring Systems

The study is aimed at selecting low-cost semiconductor laser emitters for fiber-optic sensors of systems that monitor the technical condition of mine workings, open pits and monolithic building structures. One specimen of each of the three commercial red laser emitters used in vi...

Integrated Remote Sensing and Geological Analysis for Delineating Prospective Gold-Mineralisation Zones at the Suzdal Deposit, Kazakhstan

Remote sensing can support mineral exploration in geologically complex terrains, but distinguishing mineralisation-associated spectral responses from lithological and surficial variability remains challenging. This study presents and evaluates an integrated workflow for delineati...

Exploring University Ranking Stability and Predictability: Cross-Ranking Consistency, Persistence Baselines, and Machine Learning

Global university rankings differ in methodology, yet their published positions are frequently compared across systems and monitored over time. This study examines two dimensions of ranking stability: cross-sectional consistency across ranking systems and temporal persistence wit...

A Spatial Assessment of the Production and Economic Performance of the Agro-Industrial Complex in the North Kazakhstan Region

Agricultural planning at the district level requires a transparent comparison of investments, production, financial returns, and resource availability. This study evaluates the relative production and economic performance of 13 districts in the North Kazakhstan Region based on se...

Voltage-Dependent Evolution of Microstructure and Tribo-Mechanical Behaviour of Coatings Formed on CP-Ti from a Wollastonite–Hydroxyapatite Electrolyte by Micro-Arc Oxidation

Commercially pure titanium is widely used for load-bearing implants but its low surface hardness and high friction coefficient limit durability. In this work, calcium- and silicon-bearing coatings were deposited on CP-Ti (VT1-0/ASTM Grade 2) by micro-arc oxidation (MAO) in an aqu...

Adopters as a Scarce Resource: A Chemostat-like Approach to Single-Technology Diffusion

This paper models innovation diffusion trajectories within capacity-limited market niches. To overcome the structural limitations of classical phenomenological frameworks (Bass, Gompertz, and Mansfield models)—namely, rigidly fixed trajectory asymmetry and the lack of underlying...

Engineering Assessment of Niobium Recovery Potential from TiCl4 Wet Scrubber Slurry: Material and Heat Balances, Thermal-Separation Design, and Techno-Economic Screening

Niobium can concentrate in TiCl4 wet scrubber slurry during molten-salt chlorination of ilmenite-derived titanium slag. This study presents an engineering assessment using published Nb-routing data, characterization of an isolated slurry solid, HSC Chemistry 6 balances, process d...

A Study of the Effect of Adjustable Cutting Blade System Geometry on the Digging and Filling Process of a Scraper Bucket

This paper examines ways to improve the efficiency of the scraper’s operating process by refining the cutting system and bucket-filling technology. The objective of the study is to justify design and technological solutions that reduce digging resistance, ensure more uniform buck...

Intelligent Radio Planning and Connectivity Optimization for Underground Public Transportation Systems Using Distributed Antenna Networks

Reliable wireless connectivity in underground public transportation can vary with train position because rolling stock modifies propagation paths and local interference conditions. This study proposes a transport-state-aware radio-planning framework for a three-node distributed a...

Machine Learning for Predicting Protective Behavioral Intention Following Serious-Game-Based Flood Risk Education

Climate change is increasing the frequency of hydrological extremes such as floods, requiring more effective approaches to build community preparedness alongside traditional flood risk management. This study develops and evaluates a serious-game-based flood risk education interve...

GeoProtoNet: texture-aware few-shot lithology classification from rock imagery using frozen DINOv2 features

Abstract Rapid lithology identification on open-pit bench faces is typically performed manually by geologists, yet it is subjective, inconsistent under variable field conditions, and cannot be scaled to the large image volumes required by conventional supervised deep learning. We...

Breaking the Memory Horizon of Spiking Neural Networks via Autonomous Phase-Space Distillation and Hierarchical Sleep

Spiking Neural Networks (SNNs) offer order-of-magnitude energy efficiency improvements over dense Transformers through event-driven, sparse computation. However, recurrent SNNs suffer from a fundamental physical limitation: the fading memory horizon. Due to passive membrane dissi...

Breaking the Memory Horizon of Spiking Neural Networks via Autonomous Phase-Space Distillation and Hierarchical Sleep

Spiking Neural Networks (SNNs) offer order-of-magnitude energy efficiency improvements over dense Transformers through event-driven, sparse computation. However, recurrent SNNs suffer from a fundamental physical limitation: the fading memory horizon. Due to passive membrane dissi...

Extraction of Lithium into Solution from Lithium-Containing Hydroxide Precipitates Formed by Chemisorption Precipitation

This paper presents the results of lithium extraction from a lithium-containing precipitate obtained by the sulfation roasting of rare-metal production tailings, leaching of the sulfate roast product, and subsequent precipitation. Unlike the conventional sulfuric acid process, in...

Analysis and Prospects of Cyanide-Free Methods for In Situ Borehole Leaching of Precious Metals

The declining quality of primary mineral resources necessitates the development of new approaches to the recovery of precious metals. One promising approach is in situ borehole leaching (ISL), which has been successfully applied to the recovery of uranium and copper. However, the...

Analysis and Design of a Double-Chamber Centrifugal-Gyratory Mill for Fine and Ultrafine Comminution

This study presents the analysis, design, and experimental–numerical evaluation of a double-chamber centrifugal-gyratory mill developed for the fine and ultrafine grinding of mineral raw materials. The operating principle is based on plane-parallel circular motion of two cylindri...

Mechanistic Insights into Hydrogen Peroxide-Assisted Sulfuric Acid Leaching of Vanadium from Roasted Vanadium-Bearing Ores: A Thermodynamic and Electrochemical Study

Developing efficient technologies for vanadium recovery from refractory raw materials requires an understanding of the thermodynamic and electrochemical behavior of vanadium during acid leaching. This study investigates hydrogen peroxide-assisted sulfuric acid leaching of roasted...

Tin-Based Perovskite Solar Cells: Structural Fundamentals, Material Engineering, and Prospects for Lead-Free Photovoltaics

Tin-based halide perovskites have emerged as one of the most promising classes of lead-free materials for next-generation photovoltaic technologies. Their favorable optoelectronic properties, narrow band gaps, and structural compatibility with the ABX3 perovskite framework positi...

Role of Acid Structure in Structure–Property Relationships of Reprocessable Epoxidized Soybean Oil Thermosetting Networks

Thermosetting polymers offer excellent thermal stability, chemical resistance, and mechanical integrity, but their permanent covalent crosslinks limit recyclability and reprocessability. In this work, ESO-based vitrimer-like polyester networks were synthesized from epoxidized soy...