Отображаемые элементы 21-40 из 227

    • Enhancing Visual Data Security: A Novel FSM-Based Image Encryption and Decryption Methodology 

      Shakhmetova, Gulmira; Barlybayev, Alibek; Saukhanova, Zhanat; Sharipbay, Altynbek; Raykul, Sayat; Khassenov, Altay (Applied Sciences, 2024)
      The paper presents a comprehensive exploration of a novel image encryption and decryption methodology, leveraging finite state machines (FSM) for the secure transformation of visual data. The study meticulously evaluates the effectiveness of the proposed encryption algorithm using a diverse image dataset. The encryption algorithm demonstrates high proficiency in obfuscating ...
      2026-03-04
    • Enhancing Real Estate Valuation in Kazakhstan: Integrating Machine Learning and Adaptive Neuro-Fuzzy Inference System for Improved Precision 

      Barlybayev, Alibek; Ongalov, Nurzhigit; Sharipbay, Altynbek; Matkarimov, Bakhyt (Applied Sciences, 2024)
      The concept of fair value, defined by the valuation of assets and liabilities at their current market worth, remains central to the International Financial Reporting Standards (IFRS) and has persisted despite critiques intensified by the 2008 financial crisis. This valuation method continues to be prevalent under both IFRS and the US Generally Accepted Accounting Principles ...
      2026-03-04
    • Energy Transfer of Electronic Excitations by Activators in Phosphates and Sulfates via the Creation of Combined Electron Emission States 

      Nurpeissov, Aibek S.; Alibay, Temirulan T.; Nurakhmetov, Turlybek; Kareiva, Aivaras; Zarkov, Aleksej; Pazylbek, Sapargali (Crystals, 2025)
      In this work, the mechanisms for creating a combined electronic–radiative local state beneath the conduction band, consisting of intrinsic and activator electron–hole states, are experimentally substantiated. In the first part of this work, the mechanisms of the formation of intrinsic and activator electron–hole trapping centers are experimentally demonstrated in all four ...
      2026-03-04
    • Effect of Phase Composition Variation of Oxy–Nitride Composite Ceramics on Heat Resistance and Preservation of Strength Parameters 

      Borgekov, Daryn B.; Azambayev, Serik B.; Kozlovskiy, Artem L.; Shlimas, Dmitriy I. (Crystals, 2024)
      The aim of this study is to determine the effect of changes in the phase composition of Al2O3–Si3N4 ceramics that were obtained using the method of mechanochemical solid-phase grinding on their resistance to the process of long-term thermal exposure, accompanied by the processes of oxidation and softening. The relevance of this research consists of determining the influence ...
      2026-03-04
    • Effect of hydrophobized PET TeMs membrane pore-size on saline water treatment by direct contact membrane distillation 

      Yeszhanov, Arman B.; Korolkov, Ilya V.; Güven, Olgun; Melnikova, Galina B.; Dosmagambetova, Saule S.; Borissenko, Alexander N.; Nurkassimov, A. K.; Kassymzhanove, Murat T.; Zdorovets, Maxim V. (Royal Society of Chemistry, 2024)
      This paper describes the desalination process by membrane distillation (MD) using track-etched membranes (TeMs). Hydrophobic track-etched membranes based on poly(ethylene terephthalate) (PET TeMs) with pore diameters from 700 to 1300 nm were prepared by UV-initiated graft polymerization of lauryl methacrylate (LMA) inside the nanochannels. Modified PET TeMs were investigated ...
      2026-03-04
    • Effect of copper doping on the photocatalytic performance of Ni2O3@PC membrane composites in norfloxacin degradation 

      Mashentseva, Anastassiya A.; Nurpeisova, Dinara T.; Barsbay, Murat (Royal Society of Chemistry, 2024)
      In this study, copper (Cu) and nickel oxide (Ni2O3) microtubes (MTs) were synthesized using an electroless template deposition technique within porous polycarbonate (PC) track-etched membranes (TeMs) to obtain Cu@PC and Ni2O3@PC composite membranes, respectively. The pristine PC TeMs featured nanochannels with a pore density of 4 × 107 pores per cm2 and an average pore diameter ...
      2026-03-04
    • Development of the all-solid-state flexible supercapacitor membranes via RAFT-mediated grafting and electrospun nanofiber modification of track-etched membranes 

      Aimanova, Nurgulim A.; Almanov, Alimzhan A.; Alipoori, Saeideh; Barsbay, Murat; Zhumabayev, Alisher M.; Nurpeisova, Dinara T.; Mashentseva, Anastassiya A. (Royal Society of Chemistry, 2025)
      Developing novel membranes marks a significant advancement in flexible energy storage systems. In this work, a hybrid track-etched membrane (TeM) was synthesized through RAFT-mediated polymerization, where poly(acrylic acid) (PAA) was grafted onto both the nanopore walls and surface of PET-based TeMs (PET-g-PAA), creating a stable and functionalized matrix for further enhancements. ...
      2026-03-04
    • Development of a Flexible Information Security Risk Model Using Machine Learning Methods and Ontologies 

      Barlybayev, Alibek; Sharipbay, Altynbek; Shakhmetova, Gulmira; Zhumadillayeva, Ainur (Applied Sciences, 2024)
      This paper presents a significant advancement in information security risk assessment by introducing a flexible and comprehensive model. The research integrates established standards, expert knowledge, machine learning, and ontological modeling to create a multifaceted approach for understanding and managing information security risks. The combination of standards and ...
      2026-03-04
    • Development of a Discrete Algorithm for Interpreting Ground-Penetrating Radar Data in Vertically Heterogeneous Media 

      Iskakov, Kazizat; Tatin, Almaz; Glazyrina, Natalya; Kussainova, Ainur; Uzakkyzy, Nurgul; Sagindykov, Kakim (Applied Sciences, 2025)
      This study presents the development of a discrete algorithm for interpreting groundpenetrating radar (GPR) data in vertically inhomogeneous media for the diagnostics of road structures. Experimental data were obtained using an OKO-2 GPR system, followed by primary radargram processing using the CartScan software. This included noise and interference filtering, as well as the ...
      2026-03-04
    • Development and Synthesis of Linguistic Models for Catalytic Cracking Unit in a Fuzzy Environment 

      Orazbayev, Batyr; Boranbayeva, Narkez; Makhatova, Valentina; Rzayeva, Leila; Ospanov, Yerbol; Kurmashev, Ildar; Kurmangaziyeva, Lyailya (Processes, 2024)
      This research develops a method for synthesizing linguistic models of fuzzy systems with fuzzy input and output parameters that are described by linguistic variables. Based on the proposed method, linguistic models of the Title 1000 catalytic cracking unit for heavy residues at the Shymkent oil refinery are developed, describing the dependence of the volume and quality ...
      2026-03-04
    • Design of Conical Foundations with Increased Bearing Capacity in Areas of Undermined Soils 

      Zhussupbekov, Askar; Sarsembayeva, Assel; Bazarov, Baurzhan; Omarov, Abdulla (Applied Sciences, 2024)
      This article discusses the foundations of a conical shape directed with their apex downwards to increase the cross-sectional area and, accordingly, the bearing capacity during settlement and under the influence of horizontal tensile strains in undermined areas. To simulate the deformability of undermined and seismically exposed foundations, a three-dimensional expandable box ...
      2026-03-04
    • Designing and Planning of Studies of Driver Behavior at Pedestrian Crossings Using Whole-Vehicle Simulators 

      Burdzik, Rafał; Siminski, Dawid; Kruszewski, Mikołaj; Niedzicka, Anna; Gasiorek, Kamila; Zabieva, Aliya Batyrbekovna; Mamala, Jarosław; Debicka, Ewa (Applied Sciences, 2024)
      The paper presents a proposed methodology for designing and planning research on driver behavior at pedestrian crossings using whole-vehicle simulators. It was assumed that dedicated research should be conducted in specific problem contexts. The problems identified were the identification of hazards and the risk of accidents involving vulnerable road users. The purpose of this ...
      2026-03-04
    • Decision Making for Control of the Gasoline Fraction Hydrotreating Process in a Fuzzy Environment 

      Orazbayev, Batyr; Tanirbergenova, Alua; Orazbayeva, Kulman; Berikbaeva, Meruert; Kaliyeva, Samal; Kurmangaziyeva, Lyailya; Makhatova, Valentina (Processes, 2024)
      This article is devoted to the study of decision-making problems of hydrotreating process control in the production of high-quality gasoline under conditions of scarcity and fuzziness of the initial information, ultimately developing an approach to solve them. A systematic method is proposed that makes it possible to develop a package of mathematical models of a complex ...
      2026-03-04
    • Study of the Influence of Doping Efficiency of CeO2 Ceramics with a Stabilizing Additive Y2O3 on Changes in the Strength and Thermophysical Parameters of Ceramics under High-Temperature Irradiation with Heavy Ions 

      Kozlovskiy, Artem L.; Giniyatova, Sholpan G.; Shlimas, Dmitriy I.; Borgekov, Daryn B.; Rspayev, Ruslan M.; Zdorovets, Maxim V. (Crystals, 2024)
      The article outlines findings from a comparative analysis of the effectiveness of doping CeO2 ceramics with a stabilizing additive Y2O3 on alterations in the strength and thermophysical parameters of ceramics under high-temperature irradiation with heavy ions comparable in energy to fission fragments of nuclear fuel, which allows, during high-temperature irradiation, to ...
      2026-03-04
    • Stress-Induced Secondary Metabolite Profiling in Cistanche deserticola Callus Cultures: Insights from GC-MS and HPLC-MS Analysis 

      Sutula, Maxim; Gubaidullin, Nurtai; Rakhimzhanova, Aizhan; Manabayeva, Shuga (International Journal of Molecular Sciences, 2025)
      Throughout human history, wild plant resources have played an invaluable role, serving as critical sources of food, medicine, and industrial materials. This study examined the callus cultures of Cistanche deserticola Y.C. Ma, a medicinal desert plant, by subjecting them to abiotic stress under controlled in vitro conditions. The secondary metabolite profiles were then analyzed ...
      2026-03-04
    • Sensitivity Enhancement of CO2 Sensors at Room Temperature Based on the CZO Nanorod Architecture 

      Soltabayev, Baktiyar; Raiymbekov, Yessimzhan; Nuftolla, Aidarbek; Turlybekuly, Amanzhol; Yergaliuly, Gani; Mentbayeva, Almagul (ACS Sensors, 2024)
      Cobalt-doped ZnO (CZO) thin films were deposited on glass substrates at room temperature by radio frequency (RF) magnetron sputtering of a single target prepared with ZnO and Co3O4 powders. Changes in the crystallinity, morphology, optical properties, and chemical composition of the CZO thin films were investigated at various sputtering powers of 45, 60, and 75 W. All samples ...
      2026-03-04
    • Research of Physical and Mechanical Properties of Self-Compacting Concrete Based on Polyfractional Binder 

      Begentayev, Meiram M.; Akhmetov, Daniyar A.; Lukpanov, Rauan E.; Kuldeyev, Erzhan I.; Zhumadilova, Zhanar O.; Myrzaliyev, Tolebi; Dyussembinov, Duman S.; Tolegenova, Aigerim K. (Applied Sciences, 2025)
      This article presents the results of a study on the influence of a three-level dispersed composition of the clinker component of a binder, which includes coarse, medium, and fine fractions, on the physical and mechanical properties of self-compacting concrete (SCC). One of the current challenges in SCC technology is enhancing its durability and resistance to aggressive ...
      2026-03-04
    • Recombination Luminescence and Electron–Hole Trapping Centers in BaSO4-Bi Phosphor 

      Pazylbek, Sapargali; Nurakhmetov, Turlybek N.; Nurpeissov, Aibek S.; Alibay, Temirulan T.; Sadykova, Batsay M.; Shamiyeva, Raushan K.; Zarkov, Aleksej; Kareiva, Aivaras (Crystals, 2025)
      This study of the BaSO4-Bi phosphor has revealed that the accumulated energy after external optical excitation exhibits specific characteristics. During irradiation with photon energy exceeding the bandgap, in addition to the intrinsic ultraviolet emission of the Bi3+ ion, several recombination emissions and emission from the Bi2+ ion are observed. At 80 K, the recombination ...
      2026-03-04
    • Radiation-Induced miRNAs Changes and cf mtDNA Level in Trauma Surgeons: Epigenetic and Molecular Biomarkers of X-ray Exposure 

      Kussainova, Assiya; Aripova, Akmaral; Ibragimova, Milana; Bersimbaev, Rakhmetkazhi; Bulgakova, Olga (International Journal of Molecular Sciences, 2024)
      Exposure to ionizing radiation can result in the development of a number of diseases, including cancer, cataracts and neurodegenerative pathologies. Certain occupational groups are exposed to both natural and artificial sources of radiation as a consequence of their professional activities. The development of non-invasive biomarkers to assess the risk of exposure to ...
      2026-03-04
    • Preparation and application of stimuli-responsive PET TeMs: RAFT graft block copolymerisation of styrene and acrylic acid for the separation of water–oil emulsions 

      Muslimova, Indira B.; Zhumanazar, Nurdaulet; Melnikova, Galina B.; Yeszhanov, Arman B.; Zhatkanbayeva, Zhanna K.; Chizhik, Sergei A.; Zdorovets, Maxim V.; Güvend, Olgun; Korolkov, Ilya V. (Royal Society of Chemistry, 2024)
      Stimuli-responsive membranes play an important role in the fields of biomedicine, food and chemical industries, and environmental applications, including separation of water–oil emulsions. In this study, we present a method to fabricate pH-sensitive membranes using UV-initiated RAFT graft copolymerization of styrene (ST) and acrylic acid (AA) on poly(ethylene terephthalate) ...
      2026-03-04