Väitöskirjat
Uusimmat aineistot
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Asiantuntijoiden käytäntöyhteisöt asiantuntijaorganisaatiossa : sitoutuminen, koordinointi ja osaamisen kehittäminen tutkimuksen kohteena
Acta Universitatis Lappeenrantaensis : 1191 (Lappeenranta-Lahti University of Technology LUT, 28.02.2025)Talous ja työmarkkinat Euroopan unionin alueella ovat siirtymässä teollisesta tuotannosta kohti yhä tietointensiivisempää palvelutaloutta. Korkean osaamisen ja asiantuntijatyön kysyntä kasvaa, ja vaativimmissa asiantunti ... -
Topological Hall effect in systems with magnetic skyrmions
Acta Universitatis Lappeenrantaensis : 1183 (Lappeenranta-Lahti University of Technology LUT, 23.01.2025)This work is focused on the theoretical investigation of spin-dependent transport phenomena and the skew-scattering induced Hall conductivity in two-dimensional systems with spin textures. Firstly, we analyse the topological ... -
Data-driven procedures for environmental portable and remote spectral sensing
Acta Universitatis Lappeenrantaensis : 1190 (Lappeenranta-Lahti University of Technology LUT, 29.01.2025)The significance of in situ environmental monitoring is increasing due to climate change. Recent advancements in portable spectrometers, the widespread availability of digital imagery, and the high-resolution capabilities ... -
DevOps critical success factors and organizational practices
Acta Universitatis Lappeenrantaensis : 1188 (Lappeenranta-Lahti University of Technology LUT, 21.01.2025)Over recent years, the software industry has observed a significant shift that allows software companies to deploy new features within much shorter release cycles than traditional longer timelines. This change has reduced ... -
Digital transformation of media organizations : developing value propositions and organizational capabilities
Acta Universitatis Lappeenrantaensis : 1189 (Lappeenranta-Lahti University of Technology LUT, 24.01.2025)Digitalization is profoundly disrupting both the consumption and production patterns in the media industry. Although digitalization presents new opportunities for value creation, it also requires media organizations to ... -
Heat sealing and convertibility of coated paper materials in vertical form fill and seal machine
Lappeenranta-Lahti University of Technology LUT : 1187 (Lappeenranta-Lahti University of Technology LUT, 03.02.2025)Challenges regarding the heat sealing and convertibility of coated papers in vertical form, fill, and seal (VFFS) machines were investigated. This research focused on enhancing the use of coated papers in VFFS packaging ... -
Novel liquid–liquid extraction and ion exchange processes for hydrometallurgical recovery of lithium, nickel and cobalt from lithium-ion battery waste leachate
Acta Universitatis Lappeenrantaensis : 1186 (Lappeenranta-Lahti University of Technology LUT, 20.01.2025)Hydrometallurgy is a promising technology for recovering valuable key components such as Li, Ni and Co from spent lithium-ion batteries. In this thesis, flowsheets of alternative processing routes were developed to yield ... -
Effect of impaired power quality on alkaline water electrolyzer performance and controllability
Acta Universitatis Lappeenrantaensis : 1185 (Lappeenranta-Lahti University of Technology LUT, 10.01.2025)Transition from our current fossil fuel-focused energy system to a one based mainly on renewable energy generation will introduce new challenges, the two main ones being the intermittent nature of renewables and the fact ... -
How to use warehouse management system sustainably
Acta Universitatis Lappeenrantaensis : 1184 (Lappeenranta-Lahti University of Technology LUT, 16.12.2024)A warehouse management system (WMS) is software designed to handle, automate, and optimize warehousing operations. Companies deploy WMS to enhance warehouse productivity; however, attention needs to be paid to more than ... -
Environmental impacts of printed electronics and challenging electronic waste
Acta Universitatis Lappeenrantaensis : 1182 (Lappeenranta-Lahti University of Technology LUT, 13.12.2024)Waste electrical and electronic equipment (WEEE) is the fastest-growing waste stream. This dissertation study the environmental impacts of printed electronics and challenging electronic waste. The environmental impacts on ... -
Compositional modification for process improvement of laser powder bed fusion of Ni–Mn–Ga-based magnetic shape memory alloys
Acta Universitatis Lappeenrantaensis : 1173 (Lappeenranta-Lahti University of Technology LUT, 13.12.2024)Due to twin boundary (TB) motion, magnetic shape memory (MSM) alloys based on Ni-Mn-Ga have the potential to generate reversible magnetic field-induced strains (MFIS) of up to 11%. Grain boundary defects in polycrystalline ... -
Simulation-based methods for dynamic analyses of electrified powertrains
Acta Universitatis Lappeenrantaensis : 1181 (Lappeenranta-Lahti University of Technology LUT, 10.12.2024)Electrification of powertrains is an important step in reducing the emissions and fuel consumption of off-road machinery. Computer simulations of powertrains and vehicle dynamics have become an integral part of the design ... -
Deep learning for extracting Raman signal from coherent anti-Stokes Raman scattering spectrum
Acta Universitatis Lappeenrantaensis : 1180 (Lappeenranta-Lahti University of Technology LUT, 12.12.2024)Coherent anti-Stokes Raman scattering (CARS) microscopy has been shown to be very successful in various applications such as biomedical imaging, cell biology, and material science. One challenge in extracting the Raman ... -
Optimizing gold recovery from secondary resources : advanced physical separation and additively manufactured electrodes in electrochemical flow reactors
Acta Universitatis Lappeenrantaensis : 1179 (Lappeenranta-Lahti University of Technology LUT, 10.12.2024)This thesis presents optimized methods for gold recovery from electronic waste through the innovative use of additive manufacturing, commonly known as 3D printing, to enhance electrochemical reactor performance. Gold ... -
Statistical analysis of climate variability in Rwanda
Acta Universitatis Lappeenrantaensis : 1178 (Lappeenranta-Lahti University of Technology LUT, 09.12.2024)The present study explores climate variability and reflects climate characteristics in Rwanda using a robust methodology that combines advanced computation and classical statistical methods. The study uses a dynamic linear ... -
Nanoscale phenomena during joining, ageing treatment and abrasive wear of metallic materials : molecular dynamics study
Acta Universitatis Lappeenrantaensis : 1177 (Lappeenranta-Lahti University of Technology LUT, 09.12.2024)The development of novel technologies contribute to the evolution of intelligent world, which significantly depends on the evolution of smart materials and progressive manufacturing technologies. For the sustainability of ... -
Driving sustainable business: the role of open innovation and digitalisation
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 05.12.2024)Sustainability, the most pressing challenge facing society today, is reshaping the relationship between companies and society. While companies have long been recognised as major contributors to environmental degradation, ... -
Coherent anti-Stokes Raman scattering spectromicroscopy in biomedical and climate research
Acta Universitatis Lappeenrantaensis : 1017 (Lappeenranta-Lahti University of Technology LUT, 24.02.2022)Coherent anti-Stokes Raman scattering spectromicroscopy (CARS SM) is a powerful label-free technique based on intrinsic molecular contrast from nuclear vibrations that provides detailed information on the chemical composition ... -
Modeling and analysis of industrial-scale alkaline water electrolyzer systems
Acta Universitatis Lappeenrantaensis : 1175 (Lappeenranta-Lahti University of Technology LUT, 10.12.2024)Hydrogen is viewed as a promising energy carrier for a sustainable future, particularly when generated from renewable energy sources. It is often labeled as the fuel of the future due to its cleanliness, ability to be ... -
Worker-centered smart service development : Internal process perspective for value creation
Acta Universitatis Lappeenrantaensis : 1174 (Lappeenranta-Lahti University of Technology LUT, 05.12.2024)Recent advancements in data-driven and smart technologies have led organizations to achieve more intelligent capabilities, leading to productive and efficient business processes. However, technology alone does not guarantee ...