The dissertation „Aliumosilikatinių pucolaninių priedų ir polivinilo alkoholio plaušo poveikis lengvojo kompozito struktūrai, fizikinėms ir mechaninėms savybėms“ („Effect of aluminosilicate pozzolanic additives and polyvinyl alcohol fibre on the structure and physical-mechanical properties of the lightweight composite“) prepared by VILNIUS TECH, Donatas Sikarskas. The dissertation was prepared in 2017–2023, supervisor Dr Valentin Antonovič.
The dissertation was defended at the public meeting of the Dissertation Defence Council of the Scientific Field of Materials Engineering in the Senate Hall of Vilnius Gediminas Technical University at 10 a. m. on 14 June 2023.
The dissertation investigates the effect of aluminosilicate pozzolanic additives (metakaolin waste formed by producing expanded glass granules and a catalyst used in catalytic cracking in an oil plant) on the hydration, structure, and physical-mechanical properties of a lightweight cement composite with expanded glass granules. For additional modification of the structure of such a composite, a polyvinyl alcohol fibre additive was used. The developed composite is intended to be plastered onto the surfaces of industrial energy equipment, replacing asbestos plasters.
Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.
The dissertation was defended at the public meeting of the Dissertation Defence Council of the Scientific Field of Management in the Senate Hall of Vilnius Gediminas Technical University at 2 p.m. on 14 June 2023.
In the context of transformations, knowledge management appears to be an effective and efficient instrument for increasing sustainable organisational performance. Inappropriately formed knowledge strategies and selected knowledge management decisions might have destructive consequences for an organisation. Knowledge management can be analysed through a process-oriented approach that supports organisations in applying knowledge strategy for implementing a knowledge management cycle consisting of various knowledge management processes. Also, it can be viewed as a valuable instrument for evaluating a set of individual, organisational, and technological factors affecting the knowledge management cycle leading to improved organisational performance. Nevertheless, despite the potential benefits that can be realised by implementing the knowledge management cycle and the relatively significant number of studies pertaining to the knowledge management concept, there is a scarcity of research and a limited number of studies analysing how knowledge management processes can affect sustainable organisational performance in the higher education field, especially in such developing countries as Lebanon and Syria. The main purpose of this study was to develop and empirically approve a research model for evaluating knowledge management processes in higher education institutions operating in Lebanon and Syria that contribute to sustainable organisational performance. The research methods were scientific literature review, survey, expert evaluation, descriptive statistics, inferential statistics, and Partial Least Squares Structural Equation Modelling (PLS-SEM).
Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.
