Sökning: "Hans Johannesson"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Hans Johannesson.
1. On the optimization of hydraulic cylinder seals
Sammanfattning : .... LÄS MER
2. Ultrahigh-Voltage Silicon Carbide Device Performance, Requirements, and Limitations in High-Power Applications
Sammanfattning : The increased awareness of the on-going climate change accelerates the electric energy system transformation from fossil-fueled power sources towards systems with larger portions of renewable energy sources. Moreover, the grid infrastructure requires reinforcements to cope with increasing electrical energy demand. LÄS MER
3. Multi-terminal HVDC protections based on transient line modeling
Sammanfattning : High voltage direct current (HVDC) is considered one of the critical technologies required for the power system to enable the transition toward renewables. With an increasing geographical density of HVDC converters, there is a potential for optimization by connecting more than two converters into a shared DC transmission system, thus forming a multi-terminal HVDC (MTDC) system. LÄS MER
4. Business Innovation by utilizing Engineering Design Theory and Methodology
Sammanfattning : Industrial companies that carry on innovation and operation must have well-organized and capable business systems and processes. Customer needs, market demands, global competition and technological changes drive the companies to be more adaptable, flexible and dynamic. LÄS MER
5. A Unified Framework for e-Commerce Systems Development : Business Process Pattern Perspective
Sammanfattning : In electronic commerce, systems development is based on two fundamental types of models, business models and process models. A business model is concerned with value exchanges among business partners, while a process model focuses on operational and procedural aspects of business communication. LÄS MER