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Browsing Theses and Dissertations by Title

Browsing Theses and Dissertations by Title

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  • STEGANOGRAPHY: IMAGE DATA ENCRYPTION BY USING DEEP NEURAL NETWORK 
    Sarbassov, Assylbek (Nazarbayev University School of Engineering and Digital Sciences, 2022-05)
    Over the last twenty years, steganography has attracted in the consideration of numerous information security specialists who analyzes and identifies possible threats of information security. In contrast to encryption, ...
  • STOCHASTIC RISK ASSESSMENT OF NATURAL ENVIRONMENTS IN KAZAKHSTAN 
    Ramazanova, Elmira (Nazarbayev University School of Engineering and Digital Sciences, 2021-05)
    Heavy metals are ubiquitous toxic contaminants with two types of sources: natural (trace amounts) and anthropogenic. Industrial activities and vehicular emissions lead to excessive concentrations of metals in the environment. ...
  • STRUCTURAL ENGINEERING OF SAFE LITHIUM-ION BATTERIES 
    Nwaogu, Emmanuel Chisom (School of Engineering and Digital Sciences, 2023)
    To consider lithium-metal batteries a good choice for next-generation energy storage system, it is important to maintain a long-term cyclability and reduce the excess lithium metal deposits. The application of Li-metal ...
  • Structural performances of composite Concrete-steel pile foundation system with Energy storage media 
    Agibayeva, Aidana (Nazarbayev University School of Engineering and Digital Sciences, 2019-01)
    Rapid development in energy consumption caused worldwide depletion of natural sources and degradation of the environment; therefore, the use of renewable energy such as solar and wind energy has been highly promoted. Due ...
  • Structural Stability of Proteins in deep Eutectic Solvents and their Aqueous Solutions 
    Kaumbekova, Samal (Nazarbayev University School of Engineering and Digital Sciences, 2019-01)
    Deep Eutectic Solvents (DESs) are eutectic mixtures composed of different cations and anions of Lewis and Bronsted acids and bases. With their favorable properties such as low volatility, biodegradability, low cost, ...
  • A STUDY ON THE EFFECT OF MULTIPLE WELL SHUT-INS ON SAND PRODUCTION 
    Kozhagulova, Ashirgul (Nazarbayev University School of Engineering and Digital Sciences, 2021-02-02)
    Sand production from oil-producing wells is a severe problem in the petroleum industry, mainly associated with weak and ultra-weak unconsolidated shallow formations and is an undesirable process of producing sand along ...
  • SUBLINEAR AND SUBQUADRATIC ALGORITHMS FOR SVMS 
    Omarova, Gauhar (Nazarbayev University School of Engineering and Digital Sciences, 2022-05)
    Support Vector Machine (SVM) is an important supervised machine learning algorithm used for regression and classification tasks. The core idea behind this algorithm is to create a hyperplane between data points of two ...
  • Submitted in fulfillment of the requirements for the degree of Masters of Science in Chemical and Materials Engineering 
    Karibayev, Mirat (Nazarbayev University School of Engineering and Digital Sciences, 2020-05)
    Novel Deep Eutectic Solvents (DESs) are being developed, which are non-flammable and biodegradable. These DESs are used in application for organic synthesis, metal processing, gas absorption, and removal of different ...
  • SULFATE ATTACK RESISTANCE OF ECO-EFFICIENT CEMENT-BASED MORTAR MIXTURES 
    Orynbassarov, Islam (Nazarbayev University School of Engineering and Digital Sciences, 2021-05)
    Ordinary Portland cement (OPC) is one of the most widely used construction materials in civil engineering infrastructure construction but it is susceptible to sulfate attack. One of the ways to improve the sulfate resistance ...
  • SUPERVISED AND WEAKLY-SUPERVISED CLASSIFICATION OF HANDSHAPES IN RUSSIAN SIGN LANGUAGE 
    Sultanova, Madina (Nazarbayev University School of Engineering and Digital Sciences, 2021-06)
    Creating automatically handshape classification inventory is a time-consuming process, in view of the fact that handshape datasets have to be carefully classified by linguists. Thus, only some of the popular languages ...
  • SURFACE MODIFICATION OF TITANIUM ALLOY FOR BIOCOMPATIBILITY 
    Omarov, Salikh (School of Engineering and Digital Sciences, 2023)
    Despite the research development in biomedicine, orthopedical implant application is still facing several challenges. The relatively vast number of implant failures in long-term applications motivates the current research ...
  • SWEAT BIOSENSORS BASED ON OPTICAL FIBER DESIGN 
    Karipbayeva, Kulyan (School of Engineering and Digital Sciences, 2023-04)
    Sweat is a colourless liquid excreted in the skin that contains mostly water. The presence of endogenous and exogenous substances in sweat permits feasible analysis of biomarkers of most cancers. Integrating the information ...
  • TACTILE GLOVE FOR BREAST LUMP DETECTION AND HANDOVER-ORIENTED OBJECT CLASSIFICATION 
    Syrymova, Togzhan (Nazarbayev University School of Engineering and Digital Sciences, 2022-04)
    Breast cancer is one of the most common causes of mortality among women. Inspection of lumps in the breasts by palpation is the key to early detection and leads to a higher survival rate. Likewise, transferring an object ...
  • Temporal G-Neighbor Filtering for Analog Domain Noise Reduction in Astronomical Videos 
    Aliakhmet, Kamilla (Nazarbayev University School of Engineering and Digital Sciences, 2018-12)
    Astronomical images obtained from existing cameras are subjected to various types of noise artifacts. Impulse noise is one of them and it is visible as dark and bright spots on the image. Common practice to remove impulse ...
  • TEXT CATEGORIZATION USING MACHINE LEARNING 
    Okhassov, Timur (School of Engineering and Digital Sciences, 2023)
    In today’s technological world the amount of textual data is growing dramatically. With that, databases, libraries, bookstores, and private storage are increasing with demand. Many upcoming and new books and articles need ...
  • THERMAL MECHANICAL ANALYSES OF COMPRESSED AIR ENERGY STORAGE PILE FOUNDATIONS 
    Bimaganbetova, Madina (Nazarbayev University School of Engineering and Digital Sciences, 2021-05)
    Nowadays, renewable energy has become a widely accepted energy source due to the growing interest in environmental issues such as air pollution and greenhouse gas emissions. However, it highly depends on the day and night ...
  • Thermal performance and energy efficiency of PCM integrated buildings in eight cities located in snow, fully humid with warm summer climate region 
    Jangeldinov, Baurzhan (Nazarbayev University School of Engineering and Digital Sciences, 2019-01)
    Phase change materials have been applied into building framework to reduce energy and fossil fuel consumption as well as make building sector more sustainable.. In this study, the energy consumption assessment of lightweight ...
  • TIME DOMAIN EVALUATION OF MULTILEVEL CONVERTERS VOLTAGE AND CURRENT QUALITY 
    Urtanbayev, Nurlan (Nazarbayev University School of Engineering and Digital Sciences, 2016-12)
    Multilevel converters are power conversion devices consisting of voltage sources and semiconductor switches. This work was motivated by the fact that majority of the conducted research estimates converter quality using ...
  • THE TIO2/CUO HETEROSTRUCTURE-BASED SENSORS FOR VOLATILE ORGANIC COMPOUNDS (VOCS) AT ROOM TEMPERATURE (RT) MEASUREMENTS 
    Sarsembina, Madina (School of Engineering and Digital Sciences, 2023)
    For the purpose of evaluating air quality and keeping track of the release of dangerous substances into the environment, the detection of volatile organic compounds (VOCs) is crucial. For this purpose, a number of approaches ...
  • T-MESHES AND T-SPLINE MODELLING FOR FREE-FORM SHAPE REPRESENTATIONS AND ISOGEOMETRIC ANALYSIS 
    Faiznur, Alibek (Nazarbayev University School of Engineering and Digital Sciences, 2017-01)
    Nowadays, Isogeometric Analysis has become an effective alternative to traditional Design to Analysis process which uses the same geometry standard both for Design and Analysis purposes. However, NURBS, currently used in ...