Отображаемые элементы 921-940 из 5785

    • Exploring the potential of biofunctionalized agricultural waste adsorbents integrated with UV-LED disinfection for enhanced wastewater treatment 

      Mkilima, Timoth; Sabitov, Yerlan; Shakhmov, Zhanbolat; Abilmazhenov, Talgat; Tlegenov, Askar; Jumabayev, Atogali; Turashev, Agzhaik; Kaliyeva, Zhanar; Utepbergenova, Laura (Case Studies in Chemical and Environmental Engineering, 2024)
      Agricultural waste holds promise as an adsorbent in wastewater treatment; however, its potential remains understudied, particularly regarding biofunctionalized grape pomace, coffee husks, and corn cobs for carwash wastewater treatment, along with their integration with solar-powered UV-LED disinfection. This study explores the effectiveness of these bio-functionalized ...
      2026-03-11
    • Experimental and Numerical Study of a Cone-Top Pile Foundation for Challenging Geotechnical Conditions 

      Zhussupbekov, Askar; Sarsembayeva, Assel; Bazarov, Baurzhan; Omarov, Abdulla (Applied Sciences, 2025)
      This study investigates the behavior and performance of a newly proposed cone-top pile foundation designed to improve stability in layered, deformable, or strain-sensitive soils. Traditional shallow and uniform conical foundations often suffer from excessive settlement and reduced capacity when subjected to vertical loads and horizontal soil deformations. To address these ...
      2026-03-11
    • Experimental evaluation of combined humidifier-dehumidifier desalination with thermoelectric module for simultaneous use of heating and cooling 

      Kuterbekov, Kairat A.; Kabyshev, Asset M.; Bekmyrza, Kenzhebatyr Zh.; Kubenova, Marzhan M.; Aghajani.A, Amirhossein (International Journal of Thermofluids, 2024)
      The objective of this study was to assess the performance of a Humidifier-Dehumidifier (HDH) desalination system paired with thermoelectric cooling, in order to achieve effective water desalination. The system employed the thermoelectric module’s heating and cooling capabilities to warm the water entering the HDH system and remove moisture from the humid air. An investigation ...
      2026-03-11
    • Existence and Uniqueness of the Viscous Burgers’ Equation with the p-Laplace Operator 

      Zhapsarbayeva, Lyailya; Wei, Dongming; Bagymkyzy, Bagyzhan (Mathematics, 2025)
      In this paper, we investigate the existence and uniqueness of solutions for the viscous Burgers’ equation for the isothermal flow of power-law non-Newtonian fluids ρ ( ∂ t u + u ∂ x u ) = μ ∂ x ∂ x u p − 2 ∂ x u , augmented with the initial condition u ( 0 , x ) = u 0 , 0 < x < L , and the boundary condition u ( t , 0 ) = u ...
      2026-03-11
    • Exhaust waste heat recovery system using thermoelectric generator: a prospective of novel simulation technique toward low-carbon technology 

      Kubenova, Marzhan; Kuterbekov, Kairat; Bekmyrza, Kenzhebatyr; Kabyshev, Asset; Kabdrakhimova, Gaukhar; Atamurotov, Farruh; Ibrahim, Wubshet (International Journal of Low-Carbon Technologies, 2025)
      This study numerically optimizes energy harnessing in vehicle engines using three heat exchanger fin designs: wall to wall, pyramid, and hexagonal. Two thermoelectric generator (TEG) array configurations are compared for electrical power generation. Results show the wall-towall fin provides the highest heat transfer, producing 161 W of power from 13 590.53 W of heat. Both TEG ...
      2026-03-11
    • Exact Solution of the Nonlocal PT -Symmetric (2 + 1)-Dimensional Hirota–Maxwell–Bloch System 

      Myrzakulova, Zhaidary; Zakariyeva, Zaruyet; Zhumakhanova, Anar; Yesmakhanova, Kuralay (Mathematics, 2025)
      This paper investigates the (2 + 1)-dimensional nonlocal Hirota–Maxwell–Bloch (NH-MB) system under various types of nonlocality. The mathematical consistency of possible nonlocal structures is analyzed, and three types that lead to a well-posed system are identified. The integrability of the system is established through its Lax pair representation, and a Darboux transformation ...
      2026-03-11
    • Exact cosmological models in metric-affine F(R, T) gravity 

      Maurya, Dinesh Chandra; Myrzakulov, Ratbay (Eurasian Physical Journal C, 2024)
      A flat Friedmann–Lematre–Robertson–Walker (FLRW) spacetime metric was used to investigate some exact cosmological models in metric-affine F(R, T ) gravity in this paper. The considered modified Lagrangian function is F(R, T ) = R + λT , where R is the Ricci curvature scalar, T is the torsion scalar for the non-special connection, and λ is a model parameter. We also wrote R ...
      2026-03-11
    • Exact Solution of the Nonlocal PT -Symmetric (2 + 1)-Dimensional Hirota–Maxwell–Bloch System 

      Myrzakulova, Zhaidary; Zakariyeva, Zaruyet; Zhumakhanova, Anar; Yesmakhanova, Kuralay (Mathematics, 2025)
      This paper investigates the (2 + 1)-dimensional nonlocal Hirota–Maxwell–Bloch (NH-MB) system under various types of nonlocality. The mathematical consistency of possible nonlocal structures is analyzed, and three types that lead to a well-posed system are identified. The integrability of the system is established through its Lax pair representation, and a Darboux transformation ...
      2026-03-11
    • EVALUATION OF THE STATE OF INNOVATIVE ACTIVITY OF MACHINE-BUILDING ENTERPRISE 

      Goryk, Оleksii; Buchynskyi, Andrii; Romanyshyn, Lyubomyr; Nurkusheva, Saltanat; Bembenek, Michał (Management Systems in Production Engineering, 2024)
      The innovative activity of machine-building enterprises is the main guarantee of their sustainable and effective development, which makes it possible to compare technical and technological innovation in the production of products in different periods and between different enterprises in points. Quantitative numerical assessment of the innovative component of the enterprise ...
      2026-03-11
    • Evaluating the effectiveness of machine learning methods for keyword coverage using semantic data analysis 

      Shaushenova, Anargul; Bayegizova, Aigulim; Baidrakhmanova, Gulnaz; Abuova, Zhanargul; Kassymova, Akmaral; Bakirova, Dana; Golenko, Yekaterina (International Journal of Electrical and Computer Engineering (IJECE), 2025)
      This article presents a comprehensive comparative analysis of two advanced hybrid machine learning approaches for keyword extraction: bidirectional encoder representations from transformers (BERT) combined with autoencoder (AE) and term frequency-inverse document frequency (TF-IDF) combined with autoencoder. The research targets the task of semantic analysis in text ...
      2026-03-11
    • Evaluating the effectiveness of a voice activity detector based on various neural networks 

      Medetov, B.; Zhetpisbayeva, A.; Akhmediyarova, A.; Nurlankyzy, A.; Namazbayev, T.; Kulakayeva, A.; Albanbay, N.; Turdalyuly, M.; Yskak, A.; Uristimbek, G. (Eastern-European Journal of Enterprise Technologies, 2025)
      This paper considers the efficiency of neural networks for human voice recognition. The objects of the study are artificial neural networks used for human voice recognition. Their ability to effectively recognize a human voice regardless of language, trained on a small number of speakers in noisy conditions, has been considered. The task being solved is to enhance ...
      2026-03-11
    • 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 ...
      2026-03-11
    • Enhancing cryptographic protection, authentication, and authorization in cellular networks: a comprehensive research study 

      Moldamurat, Khuralay; Seitkulov, Yerzhan; Atanov, Sabyrzhan; Bakyt, Makhabbat; Yergaliyeva, Banu (International Journal of Electrical and Computer Engineering (IJECE), 2024)
      This research article provides an extensive analysis of novel methods of cryptographic protection as well as advancements in authentication and authorization techniques within cellular networks. The aim is to explore recent literature and identify effective authentication and authorization methods, including high-speed data encryption. The significance of this study ...
      2026-03-11
    • 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 ...
      2026-03-11
    • Enhancing the efficacy of humidifier-dehumidifier desalination in humid regions through the use of an absorption refrigeration cycle (an economic and experimental investigation) 

      Abdullaev, Sherzod; Abdullaeva, Barno Sayfutdinovna; Opakhai, Serikzhan; Alzubaidi, Laith H. (International Journal of Thermofluids, 2024)
      This experimental study investigates the performance of a novel humidifier-dehumidifier (HDH) desalination system integrated with a vapor absorption refrigerator (VAR) and photovoltaic (PV) panels for humid regions. The effects of air mass flow rate (m˙ a) and inlet air temperature on key performance indicators were evaluated. Increasing m˙ a from 0.0039 kg/s to 0.0071 kg/s ...
      2026-03-11
    • Enhancing internet of things security against structured query language injection and brute force attacks through federated learning 

      Adamova, Aigul; Zhukabayeva, Tamara; Mukanova, Zhanna; Oralbekova, Zhanar (International Journal of Electrical and Computer Engineering (IJECE), 2025)
      The internet of things (IoT) encompasses various devices for monitoring, data collection, tracking people and assets, and interacting with other gadgets without human intervention. Implementing a system for predicting the development and assessing the criticality of detected attacks is essential for ensuring security in IoT interactions. This work analyses existing methods ...
      2026-03-11
    • Enhancing Analytical Precision in Company Earnings Reports through Neurofuzzy System Development: A Comprehensive Investigation 

      Matkarimov, Bakhyt; Barlybayev, Alibek; Karimov, Didar (Journal of Electrical and Computer Engineering, 2024)
      Te object of research is the fundamental and technical indicators of companies after the release of the earnings report. Tis study attempts to address the issue of understanding the impact of fundamental and technical analysis indicator dynamics on profts and loss news releases. Tis research provides an in-depth analysis of stock price forecasting models, focusing on the infuence ...
      2026-03-11
    • ENHANCEMENT OF POWER CONVERSION EFFICIENCY OF DYE-SENSITIZED SOLAR CELLS VIA INCORPORATION OF GAN SEMICONDUCTOR MATERIAL SYNTHESIZED IN HOT-WALL CHEMICAL VAPOR DEPOSITION FURNACE 

      Toktarbaiuly, O.; Baisariyev, M.; Kaisha, A.; Duisebayev, T.S.; Ibrayev, N.Kh.; Serikov, T.M.; Ibraimov, M.K.; Khaniyev, B.A.; Tezekbay, Y.Zh.; Zhambyl, A.N.; Nuraje, N.; Sugurbekova, G.K. (Eurasian Physical Technical Journal, 2024)
      This study discusses the results of plasma enhanced chemical vapor deposition synthesis of GaN on sapphire and silicon substrates using specific parameters: a forward output voltage of 150 watts, a N2 gas flow rate of 60 standard cubic centimeters per minute, a chamber pressure of 2.48 mmHg, and a synthesis time of 2hours. Characterization by scanning electron microscope, ...
      2026-03-11
    • Enhancement in fuel cells: PGM-free catalysts, nanostructured supports, and advanced membrane technology toward low-carbon emission 

      Kuterbekov, Kairat A.; Bekmyrza, Kenzhebatyr Zh.; Kabyshev, Asset M.; Kubenova, Marzhan M.; Baratova, Aliya; Abdullayeva, Iroda; Ayalew, Abebe Temesgen (International Journal of Low-Carbon Technologies, 2025)
      This study introduces innovative advancements in catalyst and membrane technology to improve fuel cell performance and reduce costs. Platinum-group metal (PGM)-free iron–nitrogen–carbon (Fe–N–C) catalysts achieved a 0.85 W/cm2 power density, a 19.88% improvement over traditional PGM-free catalysts, with stable operation exceeding 1000 hours. Nanostructured carbon supports ...
      2026-03-11
    • Enhanced adsorption of emerging contaminants from pharmaceutical wastewater using alkaline-treated pineapple leaf fiber integrated with UV-LED technology 

      Mkilima, Timoth; Saspugayeva, Gulnur; Kaliyeva, Gulzhan; Samatova, Indira; Rakhimova, Bibigul; Tuleuova, Gulkhan; Tauyekel, Akku; Batyayeva, Yelena; Karibzhanova, Rosa; Cherkeshova, Salima (Case Studies in Chemical and Environmental Engineering, 2024)
      The alarming rise of pharmaceutical contaminants in wastewater poses a significant environmental and public health challenge. Addressing this issue, this study investigated the potential of alkaline-treated pineapple leaf fiber (PALF) as an eco-friendly adsorbent for pharmaceutical removal, coupled with UV-LED technology. Alka line treatment enhanced PALF’s adsorption ...
      2026-03-11