Sökning: "flexibility"
Visar resultat 11 - 15 av 1579 avhandlingar innehållade ordet flexibility.
11. Optimal Energy and Flexibility Dispatch of Grid-Connected Microgrids
Sammanfattning : This thesis proposes an optimization model to efficiently schedule energy and flexibilities of a grid-connected microgrid (MG) with non-dispatchable renewable energy sources and battery energy storages (BESs). The model can also be used to coordinate the MG operation with the connected upstream distribution grid and to assess the MG flexibility considering economic viability, technical feasibility, and BES degradation. LÄS MER
12. Flexibility – a tool for chirality control in asymmetric catalysis
Sammanfattning : This thesis deals with the design and synthesis of ligands for asymmetric catalysis: palladium catalyzed allylic alkylations, and rho-dium and iridium catalyzed hydrogenations of olefins. Chirally flexible phosphepine ligands based on biphenyl were synthesized and their properties were studied. LÄS MER
13. Avoiding greenhouse gas emissions using flexibility in smart thermal grids
Sammanfattning : The Paris Agreement on climate change entered into force in 2016 and has been ratified by 193 of the 197 Parties to-date, followed by country targets to cut greenhouse gas emissions, not least through an increasing penetration of renewable energy sources. In its 2021 annual World Energy Outlook, the IEA envisages a Net-Zero Emissions by 2050 scenario (NZE) in which renewables as a percentage of total energy supply increase from around 10% in 2020 to over 65% in 2050 and is reflected by a similar change in the percentage of variable renewables in total generation, thereby increasing the need for system flexibility. LÄS MER
14. Flexibilitetens främlingar : - om anställda i bemanningsföretag
Sammanfattning : Temporary Work Agencies (TWAs) are an example of a trend towards flexibility in the labour market. By hiring staff from TWAs organisations can keep their staff numbers down. This however, refers to the client companies´ use or temps, and omits the intermediary, the TWA, which also needs various flexibility strategies in its activities. LÄS MER
15. Contributions to the Metamathematics of Arithmetic: Fixed Points, Independence, and Flexibility
Sammanfattning : This thesis concerns the incompleteness phenomenon of first-order arithmetic: no consistent, r.e. theory T can prove every true arithmetical sentence. The first incompleteness result is due to Gödel; classic generalisations are due to Rosser, Feferman, Mostowski, and Kripke. LÄS MER