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Dynamic Analysis Model of Spherical Roller Bearings with Defects
(Lappeenranta University of Technology, 2014-11-14)
Rolling element bearings are essential components of rotating machinery. The spherical
roller bearing (SRB) is one variant seeing increasing use, because it is self-aligning and
can support high loads. It is becoming ...
Value of Information Logistics Integration in Digital Business Ecosystem
(Lappeenranta University of Technology, 2014-12-18)
Digital business ecosystems (DBE) are becoming an increasingly popular concept for modelling and building distributed systems in heterogeneous, decentralized and open environments. Information- and communication technology ...
Cooperative strategy in emerging markets - analysis of interfirm r&d cooperation and performance in Russian manufacturing companies
(Lappeenranta University of Technology, 2014-10-31)
Emerging markets have come to play a significant role in the world, not only due to their
strong economic growth but because they have been able to foster an increasing number of
innovative high technology oriented firms. ...
Minimizing Circulating Current in Parallel-Connected Photovoltaic Inverters
(Lappeenranta University of Technology, 2014-12-02)
Parallel-connected photovoltaic inverters are required in large solar plants where it is not
economically or technically reasonable to use a single inverter. Currently, parallel inverters
require individual isolating ...
The board of directors as a part of family business governance – multilevel participation and board development
(Lappeenranta University of Technology, 2014-11-07)
In this study, I examine the board of directors as a part of family business governance. Both
boards and governance have increased their attractiveness as a research topic lately. Research
on boards has concentrated ...
Catalytic direct synthesis of hydrogen peroxide in a novel microstructured reactor
(Lappeenranta University of Technology, 2014-12-02)
The direct synthesis from hydrogen and oxygen is a green alternative for production of
hydrogen peroxide. However, this process suffers from two challenges. Firstly, mixtures of
hydrogen and oxygen are explosive over a ...
Modified nano- and microcellulose based adsorption materials in water treatment
(Lappeenranta University of Technology, 2014-11-07)
In recent decades, industrial activity growth and increasing water usage worldwide have led to the release of various pollutants, such as toxic heavy metals and nutrients, into the aquatic environment. Modified nanocellulose ...
Energy-efficient control strategies for variable speed driven parallel pumping systems based on pump operation point monitoring with frequency converters
(Lappeenranta University of Technology, 2014-03-14)
The pumping processes requiring wide range of flow are often equipped with parallelconnected
centrifugal pumps. In parallel pumping systems, the use of variable speed
control allows that the required output for the process ...
VVER-440 Thermal Hydraulics as a Computer Code Validation Challenge
(Lappeenranta University of Technology, 2014-12-12)
This thesis concentrates on the validation of a generic thermal hydraulic computer code
TRACE under the challenges of the VVER-440 reactor type. The code capability to
model the VVER-440 geometry and thermal hydraulic ...
Pursuit of change versus organizational inertia: a study on strategic renewal in the Finnish broadcasting company
(Lappeenranta University of Technology, 2014-12-05)
This doctoral dissertation explores the intra-organizational dynamics of a strategic renewal
process. The main research question is how the pursuit of change and organizational inertia
co-exist, intertwine, and collide ...