March - KhorezmScience.uz

NEUROCOGNITIVE ASPECTS OF DIGITAL LEARNING IN HIGHER EDUCATION

Bunyod — Tue, 03 Mar 2026 22:00:15 +0500

This article examines the role of digital education as a key factor in the development of students’ cognitive competencies in the context of the digital transformation of society. An analysis of international approaches, including the DigComp digital competence framework, is conducted. It is
established that the digital educational environment contributes to the development of critical thinking, analytical skills, and learner autonomy.

MAHMUDKHODJA BEHBUDI IS ONE OF THE LEADING REPRESENTATIVES OF THE JADIDIST MOVEMENT

Bunyod — Tue, 03 Mar 2026 22:00:14 +0500

This article analyzes the life, socio-political activities, and ideas of enlightenment of Mahmudkhodja Behbudi, one of the major figures of the Jadid movement. Mahmudkhodja Behbudi played a key role in the processes of national revival. Mahmudkhodja Behbudi's services in organizing new usul schools, creating textbooks and reforming society through the press are noteworthy.

COGNITIVE MECHANISMS OF STUDENTS’ SOCIAL THINKING IN THE DIGITAL SOCIETY: A THEORETICAL ANALYSIS AND INTEGRATIVE FRAMEWORK

Bunyod — Tue, 03 Mar 2026 22:00:13 +0500

This article provides a theoretical analysis of the cognitive mechanisms of students’ social thinking in the digital society. The development of information and communication technologies significantly influences the formation of social perception, attribution, empathy, and cognitive schemas. Based on classical and contemporary approaches, the structure of social thinking and its key components are examined. An integrative theoretical model is proposed to explain the processes of perceiving and interpreting social information. The findings are important for enhancing students’ social competencies and improving psychological interventions.

ON THE SELF-SIMILAR STRUCTURE OF NONLINEAR DIFFUSION SYSTEMS WITH COUPLED DYNAMICS

Bunyod — Tue, 03 Mar 2026 22:00:12 +0500

This paper investigates the self-similar structure of a class of nonlinear diffusion systems with coupled dynamics, where crossinteractions between components substantially affect the long-time evolution and the formation of singular regimes. We focus on the qualitative and quantitative description of solution profiles through scaling transformations that reduce the original parabolic system to an associated self-similar problem. By combining comparison principles with nonlinear splitting techniques, we derive constructive upper and lower estimates for weak solutions and identify parameter regimes that distinguish finite-time blow- up from global-in-time behavior. The asymptotic analysis reveals the emergence of compactly supported self-similar profiles, the localization mechanism driven by nonlinear diffusion, and the role of coupled source terms in shaping the free-boundary propagation. In addition, we establish asymptotic expansions near the interface and describe the limiting selfsimilar attractors governing the solution dynamics. The obtained results provide a unified framework for assessing the interplay between nonlinearity, coupling, and scaling, and they support reliable numerical verification through finite-difference discretizations and iterative solvers.

A LINEAR EVASION GAME PROBLEM WITH 𝑮𝑮𝒓 − CONSTRAINTS ON CONTROLS OF PLAYERS

Bunyod — Tue, 03 Mar 2026 22:00:11 +0500

In this article, a differential game of evasion is explored for the linear motion dynamics of players (Pursuer and Evader) when the Pursuer control is subject to geometric constraint (or 𝐺-constraint) and the Evader control is subject to Grönwall-type constraint (or 𝐺𝑟-constraint). To solve the evasion problem, we propose a particular strategy for evader and study its structure depending on the parameters.

MODELING OF THE STRUCTURAL AND ELECTRONIC PROPERTIES OF THE (InSb)1 – x(Sn2)x SOLID SOLUTION

Bunyod — Tue, 03 Mar 2026 22:00:10 +0500

This work presents a first-principles study of the structural and electronic properties of the (InSb)1-x(Sn2)x solid solution using density functional theory within the Quantum ESPRESSO framework. The results show that Sn incorporation modifies the electronic structure while preserving the direct band-gap nature of InSb, with the valence-band maximum and conduction-band minimum remaining near the Γ point at low concentrations
(x = 0.05). The presence of Sn introduces additional states and perturbs the band dispersion near the Fermi level. A modification of the band gap is
observed, consistent with alloying effects in narrow-gap semiconductors. Despite the known underestimation of the band gap by semilocal approximations, the results provide a reliable qualitative description. Overall, even a small amount of Sn significantly influences the electronic
properties of InSb, indicating its potential for band-gap engineering and optoelectronic applications.

EFFECT OF INTERGRANULAR BARRIERS ON CHARGE CARRIER MOBILITY IN Mg3Sb2 MATERIAL

Bunyod — Tue, 03 Mar 2026 22:00:09 +0500

This study analyzes the effect of grain-boundary potential barriers on charge carrier mobility in Mg3Sb2-based thermoelectric materials. These
barriers reduce mobility but may enhance the Seebeck coefficient via energy filtering. Their effects can be controlled through grain size engineering, doping, and sintering optimization.

THERMAL ANALYSIS OF Ni (II) OXALATE-ATSETATE COMPLEX COMPOUNDS

Bunyod — Tue, 03 Mar 2026 22:00:08 +0500

In this work, methods for the synthesis of complex compounds of Ni (II) oxalate with Ca, Cu (II), Co acetates were studied and reactions were carried out. In order to study the composition of the obtained complex compounds, elemental analysis was carried out and the theoretical results were compared. Thermal analysis was carried out to determine the coordination bonds formed in the composition of complex compounds. By thermal analysis methods - thermogravimetric analysis (TGA) and differential thermal analysis (DTA), the stability of the complexes, stepwise decomposition processes, and thermal effects were determined. As a result, it was established that Ni (II) complexes change in various temperature ranges in the presence of oxalate and acetate ligands, and as a result of their decomposition, oxide products are formed.

AUTOMATED LASER-BASED BIRD DETERRENCE SYSTEM FOR AIRPORTS

Bunyod — Tue, 03 Mar 2026 22:00:07 +0500

The paper presents an intelligent laser-based bird deterrence system aimed at enhancing ornithological safety at civil aviation facilities. The video subsystem performs continuous monitoring of the aerodrome area and automatically detects birds within potentially hazardous zones. The system is implemented using an industrial programmable logic controller and the CODESYS software platform, while data archiving and visualization
of technological parameters are provided by SCADA tools. Experimental trials confirmed a stable reduction in bird activity within the controlled area
and high reliability of automatic detection and laser targeting. The obtained results demonstrate the feasibility and effectiveness of applying intelligent laser-based systems to ensure aviation and industrial safety.

VALIDATION OF A SIMPLIFIED DEGREE-DAY ENERGY MODEL FOR RURAL RESIDENTIAL BUILDINGS IN UZBEKISTAN USING MONITORED PILOT-HOUSE DATA

Bunyod — Tue, 03 Mar 2026 22:00:06 +0500

This study validates a simplified steady-state heating degree-day (HDD) energy model against measured natural gas consumption from two
rural houses in Uzbekistan's Tashkent region during the 2014–2015 heating season: an energy-efficient pilot house (100 mm mineral wool insulation, heat-recovery ventilation) and an uninsulated typical house. Four basetemperature variants were tested. The model overestimates demand for the insulated house (HDD(20): MBE = +40.6%) and underestimates it for the uninsulated one (HDD(22): MBE = −20.8%), both due to occupant behavior undetectable by a steady-state model. Despite absolute errors of 28–32%, the pilot-to-typical energy ratio is reproduced with only 5.5% error (0.477 vs. 0.504), confirming the model's suitability for comparative building stock assessment and retrofit prioritization in rural Uzbekistan.