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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 ...
Defining the keyhole modes – the effects on the weld geometry and the molten pool behaviour in high power laser welding of stainless steels
(Lappeenranta University of Technology, 2014-12-17)
Keyhole welding, meaning that the laser beam forms a vapour cavity inside the steel, is one of
the two types of laser welding processes and currently it is used in few industrial applications.
Modern high power solid ...
Management of technological resource dependencies in interorganizational networks
(Lappeenranta University of Technology, 2018-10-12)
The superior performance of a firm is achieved neither through technology nor the
surrounding organizational structure per se, but through the successful alignment of
technological resource dependencies and interorganizational ...
On weldability of thick section austenitic stainless steel using laser processes
(Lappeenranta-Lahti University of Technology LUT, 2019-10-25)
Laser welding and its different process variations using filler metal addition have increasingly become the preferred joining technology of the metal structure fabrication industry.
The essential characteristics of laser ...
Recognizing required changes to higher education engineering programs’ information literacy education as a consequence of research problems becoming more complex
(Lappeenranta University of Technology, 2018)
Challenges in the Earth’s sustainable development set requirements to modern engineering education. Engineers face complex problems, which need to be solved to keep the planet viable for future generations. This study was ...
Tapping experiences of presence to connect people and organizational creativity
(2018-09-28)
The qualitative research presented in this dissertation focuses on individual experiences of presence (EPs) and their potential connections to organizational creativity. The overarching question is: How are EPs experienced ...
Theoretical and Experimental Analysis of Dynamic Loading of a Two-stage Aircraft Engine Fuel Pump and Methods for Its Decreasing
(Lappeenranta University of Technology, 2017-11-10)
Aircraft fuel pumps are known to be the most loaded units of the gas turbine engines. Primary engine fuel pump is the key component limiting the reliability and endurance of the fuel system, and, as a result, the durability ...
Ligno-cellulose fibre poly(lactic acid) interfaces in biocomposites
(Lappeenranta University of Technology, 2018-11-23)
Thermoplastic composite materials based on renewable raw materials are promoted globally in various ways. They can be prepared as durable, but biodegradable materials as poly(lactic acid) (PLA) ligno-cellulose composites ...
Dependence of manufacturing parameters on the performance quality of welded joints made of direct quenched ultra-high-strength steel
(Lappeenranta University of Technology, 2018-09-29)
The use of ultra-high-strength steels (UHSS) has increased in the engineering industry during past decades especially in the fields of welded structural applications where products are required to possess a specific ...