Part I: Mathematics & Computational Science.- Extensions of Some Iterative Methods to the Multidimensional Case.- L^2- Decay Estimate of the Solutions to Schroedinger Equations with Potential and Sub-Critical Dissipative Nonlinearity.- The Stability of State Model of Lane-Change Motion for Autonomous Vehicle.- The Fourth Boundary Value Problem for a Hyperbolic-Parabolic Equation with a Variable Heat Conductivity Coefficient and a Nonlinear Radiation Source.- System Dynamics Approach for Reducing Air Pollution in Ulaanbaatar City.- ?alculation Of Aerodynamic Characteristics of an Arbitrary Profile at Non-Stationary Flow.- Generating Function Method for Constructing New Iterations with p(p = 5,6) Order of Convergence.- Method of Improving Controls in Nonlinear by a Control Systems with Constraints Based on the Fixed Point Problem.- Nonstandard Finite Difference Scheme for SIRS Epidemic Model.- On One Approach to Solving the Problem of the Extremum of the System Final State Norm.- The Mixed Boundary-Value Problem For The Nonlinear Hyperbolic-Parabolic Equation Of A Thermal Conductivity For The Bounded Plates.- Modeling of Gas Detonation In Explosion Chambers.- Fixed Point Methods For Finding Degenerate Extremal Controls.- Part II:Chemical Technology & Engineering.- Adsorptive Removal of Bromide Ions by Ag-Modified Ceramic Membrane Synthesized from Kaolin and Dolomite.- The Study to Determine the Possibility of Acidithiobacillus Ferrooxidans (OR512156.1) Leaching of Low-Grade Copper Ore.- Reduction of Water Hardness by Natural Zeolite via Batch Process.- Study of Raw Materials for Thermal Insulation Materials.- Experimental Study of Bioleaching Using Bacteria Cultured from PLS Solution of the Copper Plants.- Copper Adsorption in Natural and Composite Zeolite Materials.- A Study on the Attenuation of Acidic Solution from the Zoovch-Ovoo Uranium Ore Processing Plant.- Investigation Influence Factor Oxidation of Copper Concentrate Under Atmospheric Conditions.- Modelling and Optimization Hydrogen Production Through Steam Methane Reforming.- Part III: Physics and Environmental Science.- The Formation of a Vortex in a Bose-Einstein Condensate.- Stark Resonance Parameter for Atomic Hydrogen Revisited.- Mathematical Modelling of Anthropogenic Loads Based on Satellite Data.- Investigation of Environmental Radiation Dispersion During Uranium Mining in Mongolia: Impacts and Mitigation Strategies.- Thickness Identification of Two-Dimensional MoS2 Layers Using X-ray Powder Diffractometer.- An Equation of State for a Hard Homonuclear Diatomic Fluid Derived from the Integral Equation Method.- Photoelectron Momentum Distribution of Helium Atom.- Comparative Study of Insulation Materials for Cost-Effective and Energy-Efficient Private Residential Buildings.- Analyzing the Effects of Policy Interventions on Solid Waste Management in Ulaanbaatar, using the System Dynamics Model.- The Calculation of Ground States of Noble Gas Atoms Using Quantum Fluid Density Functional Approach.- Using Physics Experiments to Support “Monozukuri” Skills.- Part IV: Engineering.- Structural Design and Finite Element Analysis of a Modular Truss Frame for Vehicle Recovery from Lake Khuvsgul.- Early-Age Temperature Effect on The Properties of Concrete Cured By Electrical Heating in Cold Weather.- Urgent Needs of Flood Resilience in the Suburban Areas of the Upper Selbe River, Ulaanbaatar, Mongolia.- The Improvement of Microclimate Design in Residential Sub-District Used by the Computational Fluid Dynamic.- Research and Experiment of Vibrating Mixer with Inclined Cylinder Drum.- Improved Performance of Organic Photovoltaic Cells with ITO Anode Modified by Molecular Self-Assembled Monolayer.- Methodological Approach to the Development of Mongolia`s Electric Power System: Current Trend and Challenges.- A Study on the Phase-Out of HCFCs and the Implementation of Energy-Efficient Air Conditioning Systems in Buildings.- Impacts on Mongolian Pasture-Raised Sheep Spleen Powder: Quality and Nutrient Profile.- Improving Indoor Comfort and Energy Efficiency Through Passive Architectural Design in Single Family House: A Case Study of Ulaanbaatar’s Climate Conditions.- Experimental Analysis of Harmonic Effects on Power Transformer in Wind Farm.- Integrating Environmental Factors and Community Needs in Urban Public Space Planning: Lessons from Ulaanbaatar.- Understanding the Knowledge and Support Needs of Construction Professionals in Advancing Green Building Practices.- Study on Installing a Solar Power Plant at a Landfill Site in Mongolia.- Development of Antibacterial Gelatin-Based Hydrogel for Sustained Infection Control in Biomedical.