Selaus nimekkeen mukaan kokoelmassa Väitöskirjat
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Ultrafine grinding of FGD and phosphogypsum with an attrition bead mill and a jet mill : optimisation and modelling of grinding and mill comparison
LTKK Tieteellisiä julkaisuja - Research Papers (Lappeenranta University of Technology, 22.12.1997)Fine powders of minerals are used commonly in the paper and paint industry, and for ceramics. Research for utilizing of different waste materials in these applications is environmentally important. In this work, the ... -
Ultrasonic and Electrokinetic Remediation of Low Permeability Soil Contaminated with Persistent Organic Pollutants
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 05.11.2014)Electrokinetics has emerged as a potential technique for in situ soil remediation and especially unique because of the ability to work in low permeability soil. In electrokinetic remediation, non-polar contaminants ... -
Ultrasound-assisted electrochemical treatment of wastewaters containing organic pollutants by using novel Ti/Ta2O5-SnO2 electrodes
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 08.07.2016)Advanced oxidation processes (AOPs) are modern methods using reactive hydroxyl radicals for the mineralization of organic pollutants into simple inorganic compounds, such as CO2 and H2O. Among AOPs electrochemical oxidation ... -
Ultraviolet light protection and weathering properties of wood-polypropylene composites
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.12.2014)The main aim of this thesis is to study the effect of pigments on the weathering properties of wood-polypropylene composites (WPC). The studied properties are color change, water absorption, thickness swelling and Charpy ... -
Uncovering impulse buying behaviour in sustainable settings
Acta Universitatis Lappeenrantaensis : 1170 (Lappeenranta-Lahti University of Technology LUT, 15.11.2024)With the rapid development of the sustainability agenda, the green products market and green buying, new perspectives on impulse buying behaviour have emerged. This doctoral dissertation examines impulse buying behaviour, ... -
Understanding and leveraging the social network services in innovation ecosystems
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 05.10.2018)In today’s knowledge-based economies, it is generally accepted that innovations are integral to the foundation of both regional and national economic development, as well as one of the main causes for social and technical ... -
Understanding and Managing Enterprise Systems Integration
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 12.05.2017)The need to implement different enterprise systems to automate business processes in companies has generated complex environments consisting of various kinds of information systems based on different technologies. In ... -
Understanding business model change in international entrepreneurial firms
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 26.11.2021)Business models (BMs) underpin an organization’s core activities and are fundamental drivers in creating and capturing value across a firm’s value chain. BMs have attracted significant attention from research and practice ... -
Understanding complex system change for a sustainable food system
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 14.12.2016)This thesis investigates a complex system change for navigating food systems towards sustainability. The thesis employs interdisciplinary theoretical framework, grounded in the dynamics of a complex adaptive system. In ... -
Underwater Remote Welding Technology for Offshore Structures
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 27.11.2015)The construction of offshore structures, equipment and devices requires a high level of mechanical reliability in terms of strength, toughness and ductility. One major site for mechanical failure, the weld joint region, ... -
Urban open spaces for sustainability transformation : capturing citizens’ perceptions with arts-based methods
Acta Universitatis Lappeenrantaensis : 1239 (Lappeenranta-Lahti University of Technology LUT, 28.11.2025)Urban open spaces (UOS) in cities maintain urban nature enabling human-nature interaction. Citizens’ rich nature perceptions may facilitate positive attitudes to sustainability transformation. Current public participation ... -
Usability and limitations of behavioural component models in IGBT short-circuit modelling
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 ... -
Usability of laser–arc hybrid welding processes in industrial applications
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 27.05.2011)Metal industries producing thick sections have shown increasing interest in the laser–arc hybrid welding process because of its clear advantages compared with the individual processes of autogenous laser welding and arc ... -
Usability of the submerged arc welding (SAW) process for thick high strength steel plates for Arctic shipbuilding applications
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 03.05.2017)Construction of reliable, economically feasible and ice-capable vessels and structures for the Arctic has been a subject of great interest in recent years, in spite of the concerns that the undertaking clearly faces ... -
Usable Privacy Preservation in Mobile Electronic Personality
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 24.08.2012)Personalised ubiquitous services have rapidly proliferated due technological advancements in sensing, ubiquitous and mobile computing. Evolving societal trends, business and the economic potential of Personal Information ... -
Use of airborne laser scanner data in demanding forest conditions
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 2015)Most of the applications of airborne laser scanner data to forestry require that the point cloud be normalized, i.e., each point represents height from the ground instead of elevation. To normalize the point cloud, a digital ... -
The use of future-oriented knowledge in regional innovation processes: Research on knowledge generation, transfer and conversion
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 31.10.2008)The importance of the regional level in research has risen in the last few decades and a vast literature in the fields of, for instance, evolutionary and institutional economics, network theories, innovations and learning ... -
Use of neural networks in robot positioning of large flexible redundant manipulators
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 06.10.1999)Deflection compensation of flexible boom structures in robot positioning is usually done using tables containing the magnitude of the deflection with inverse kinematics solutions of a rigid structure. The number of table ... -
Utilising student profiles in mathematics course arrangements
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 15.12.2015)This thesis develops a method for identifying students struggling in their mathematical studies at an early stage. It helps in directing support to students needing and benefiting from it the most. Thus, frustration felt ... -
Utilization of a Time Domain Simulator in the Technical and Economic Analysis of a Wind Turbine Electric Drive Train
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 13.08.2010)The amount of installed wind power has been growing exponentially during the past ten years. As wind turbines have become a significant source of electrical energy, the interactions between the turbines and the electric ...
