Sökning: "multilevel model"

Visar resultat 16 - 20 av 78 avhandlingar innehållade orden multilevel model.

1. 16. Efficient Modeling of Modular Multilevel Converters for HVDC Transmission Systems

   Författare :Noman Ahmed; Hans-Peter Nee; Tim Green; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-Voltage dc; Modular Multilevel Converter; Voltage-Source Converter; HVDC Grids; Multiterminal DC Systems; Hybrid HVDC Breaker; Modeling; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The drive towards getting more and more electrical energy from renewable sources, requires more efficient electric transmission systems. A stronger grid, with more controllability and higher capacity, that can handle power fluctuations due to a mismatch between generation and load is also needed. LÄS MER

3. 17. Multilevel Inverter for Wave Power Conversion

   Författare :Remya Krishna; Uppsala universitet; []
   Nyckelord :;

   Sammanfattning : This thesis deals with the electrical system analysis of a Wave Energy Converter (WEC) for the objective of grid connection. The Linear Permanent Magnet Generator (LPMG) is modeled and validated with experimental results. The comparison studies establish that this model is useful for the subsequent system modeling and performance analysis. LÄS MER

4. 18. Active and healthy ageing in Europe : significance of social relationships

   Författare :Septi Kurnia Lestari; Nawi Ng; Xavier de Luna; Malin Eriksson; Mikael Rostila; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; older population; ageing; social relationships; social support; social participation; social contact; quality of life; frailty; panel data; latent class analysis; growth model; multilevel logistic regression; pandemic; Europe; SHARE; äldre befolkning; åldrande; sociala relationer; socialt stöd; socialt deltagande; sociala kontakter; livskvalitet; åldersskörhet; paneldata; latent klassanalys; tillväxtmodell; flernivålogistisk regression; pandemi; Europa; SHARE; epidemiologi; Epidemiology; Public health; folkhälsa;

   Sammanfattning : Background: Social relationships have important roles in achieving active and healthy ageing. Social relationships are dynamic across the life course. A myriad of contextual and individual (e.g. LÄS MER

5. 19. On Linguistic and Discursive Constructions of Concession and Adversativity : Towards a Multilevel Analysis of English in the UK Parliament

   Författare :Mihai Daniel Frumuselu; Michal Krzyżanowski; Cornelia Ilie; Per Ledin; Eivind Nessa Torgersen; Örebro universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; concession; adversativity; political discourse; parliamentary discourse; UK Parliament; Corpus Linguistics; Discourse Analysis; Critical Discourse Analysis; English; Engelska;

   Sammanfattning : This study analyses concessive and adversarial language in UK parliamentary debates and thereby enriches the theoretical and analytical body of knowledge on the language of concession and adversativity in contemporary English. It contributes to existent scholarship on both grammatical constructions of concession/adversativity and on the dynamics of contemporary British parliamentary and political discourse. LÄS MER

7. 20. A Political View on the Internationalization Process

   Författare :Francisco Figueira de Lemos; Amjad Hadjikhani; Mats Forsgren; Mohamed Yamin; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Internationalization Process; Uppsala Model; Transaction Cost Economics; Institutional theory; Firm; Multinational; Government;

   Sammanfattning : The role of governments in the internationalization of the firm had early recognition in prominent seminal studies in international business, such as Hymer’s thesis or the Uppsala Model, though the interaction between multinationals and governments has attracted scarce attention. As such, the main stream of economics and management studies have focused on internationalization essentially as an issue of the firm, wherein the multinationals’ interaction with the environment is limited to a business-industrial scope of suppliers, clients, and competitors. LÄS MER