Väitöskirjat

 

Uusimmat aineistot

  • The Journeys of Becoming and Being an International Entrepreneur : A Narrative Inquiry of the “I” in International Entrepreneurship 

    Korhonen, Satu
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 30.10.2020)
    This doctoral study was conducted as an inquiry of the international entrepreneur in order to balance off the domination of firm-level studies and limited discussion of the individual as the initial driver in the international ...
  • Parameter Estimation of Large-Scale Chaotic Systems 

    Shemyakin, Vladimir
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 30.10.2020)
    Parameter estimation plays a crucial role in modelling various kinds of phenomena. However, it can be challenging to properly calibrate a model to satisfy the observed quantities and provide reliable forecasts. In the case ...
  • Energy security evaluation for the present and the future on a global level 

    Azzuni, Abdelrahman
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 13.10.2020)
    Energy Security is a universal concern for all stakeholders and achieving energy security is a crucial objective for all societies. Therefore, energy security became a major part of national security with the ability to ...
  • Real-time monitoring of membrane fouling caused by phenolic compounds 

    Virtanen, Tiina
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 09.10.2020)
    Following the booming blooming of the bio-economy, membrane-based processes have gained increasing interest as a selective, energy efficient, and environmentally friendly option for the separation and purification of organic ...
  • Interplay of local moments and itinerant electrons 

    Nokelainen, Johannes
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 02.10.2020)
    We have studied the electronic structure of materials whose properties are driven by magnetism. This work requires research with computer simulations based on quantum mechanics laws within the density functional theory ...
  • Computational fluid dynamics as a tool for process engineering 

    Filimonov, Roman
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 02.10.2020)
    Modern engineering increasingly employs various computer software to develop products. The use of software to simulate product performance is known as computer-aided engineering (CAE). CAE supports the design process of a ...
  • Control design issues in grid-connected single -phase converters, with the focus on power factor correction 

    Honkanen, Jari
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 25.09.2020)
    Electrical equipment is most commonly powered from a mains connection. The mains alternating voltage is rectified, isolated, and regulated in a power supply. The power supply acts as an interface between the mains voltage ...
  • Application of differential ion mobility spectrometry for detection of water pollutants 

    Safaei, Zahra
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 21.09.2020)
    Intentions to utilize differential ion mobility spectrometry (DMS) for environmental applications including the monitoring of volatile organic compounds (VOCs) or semivolatile organic compounds (SVOCs) in aqueous media ...
  • The Technology of Flipped Classroom: Assessments, Resources and Systematic Design 

    Shnai, Iuliia
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 18.09.2020)
    Integration of digital technologies influences the traditional educational paradigm. Students’ learning behavior moves toward flexible on demand information acquisition. New providers of education, platforms, and learning ...
  • Usability and limitations of behavioural component models in IGBT short-circuit modelling 

    Musikka, Tatu
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 04.09.2020)
    Power electronic device design and electrical system analysis can be enhanced by applying modern simulation tools, which make it possible to decrease the use of costly and time-consuming prototypes. One very critical ...
  • Modelling the value of fleet data in the ecosystems of asset management 

    Kinnunen, Sini-Kaisu
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 14.08.2020)
    The emergence of technologies, e.g. Internet of Things (IoT), cloud services and advanced analytics, have enabled diverse data utilization and service development based on the data. In asset management, assets, such as ...
  • Thermal analysis of dissimilar weld joints of high-strength and ultra-high-strength steels 

    Njock Bayock, Francois Miterand
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 30.06.2020)
    Advances in steel production processes in the last two decades have enabled the production of novel materials with improved strength, weldability and usability. Many industries are implementing these novel materials into ...
  • The deposition and light absorption property of carbonaceous matter in the Himalayas and Tibetan Plateau 

    Yan, Fangping
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 29.06.2020)
    The Himalayas and Tibetan Plateau (HTP), known as the ―Third Pole‖ and ―world roof‖, contains the largest amount of glaciers outside the Arctic and Antarctic. Carbonaceous matter, mainly including black carbon (BC) and ...
  • Dynamic and thermal modeling of touch-down bearings considering bearing non-idealities 

    Neisi, Neda
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 26.06.2020)
    In an active magnetic bearing (AMB) supported rotor, the touchdown bearings support the rotor in case of an electromagnetic field failure or a fault in the control system. In this work, a dynamic and thermal model of ...
  • Separation efficiencies of freeze crystallization in wastewater purification 

    John, Miia
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 25.06.2020)
    In a changing world, it is of paramount importance to ensure the sufficiency of clean water for all. Wastewater purification will face unprecedented challenges as a result of growing human population and accelerating ...
  • The role of efficient forest biomass logistics on optimisation of environmental sustainability of bioenergy 

    KC, Raghu
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 17.06.2020)
    Forest biomass is a crucial element in the energy system in many parts of the world, especially in Finland, and it is expected to play a similar, if not a more important, role in the near future as countries aim to replace ...
  • Identification of magnetically levitated machines 

    Vuojolainen, Jouni
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 16.06.2020)
    Magnetically levitated machines use magnetic levitation to maintain the separation between the bearing races. They offer various benefits compared with other types of bearings: no contact between the bearing races, the ...
  • Fenton chemistry beyond remediating wastewater and producing cleaner water 

    Burgos Castillo, Rutely Concepcion
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 29.05.2020)
    The production, use and transformation of inorganic and organic chemical compounds are negatively affecting the global environment, whereas the disposal of byproducts generated at urban wastewater treatment plants isbecoming ...
  • Sustainable Recycling of Critical Materials 

    Rahimpour Golroudbary, Saeed
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 20.05.2020)
    The world’s supply of critical materials such as phosphorus (P), niobium (Nb), lithium (Li) and other strategically important elements is under increasing pressure due to the rapidly growing global demand in the recent ...
  • Enhanced micropollutant removal and nutrient recovery in municipal wastewater treatment 

    Arola, Kimmo
    Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 27.04.2020)
    Depleting natural resources such as fresh water and phosphate minerals creates pressure to pursue towards resource recovery in municipal wastewater treatment. In addition, the aquatic environment is under stress due to ...

Näytä lisää