Avancerad sökning

Visar resultat 1 - 5 av 37 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Optimizing Energy Efficiency in Wireless Links Through Reconfigurable Intelligent Surfaces and Optimal Ratios

    Författare :Anders Enqvist; Emil Björnson; Ozlem Tugfe Demir; Cicek Cavdar; Yuanwei Liu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 6G; Energy Efficiency; Reconfigurable Intelligent Surfaces; 6G; energieffektivitet; rekonfigurerbara intelligenta ytor; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : This thesis explores the optimization of energy efficiency (EE) in the radiolink of wireless communication systems, focusing on both the user equipment (UE) and the base station (BS). The first part of the study examines strategies to minimize the energy consumption of the UE when transmitting short data payloads, utilizing a reconfigurable intelligent surface (RIS) controlled by the BS, to improve the channel conditions. LÄS MER

  3. 2. Pre-surgical hypnosis and suggestions in anesthesia

    Författare :Björn Enqvist; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In a medical setting patients are often dependent, vulnerable and easily influenced by information, which may be interpreted in a way that creates anxiety and expectations of pain and complications. Information is often forgotten. Time can be experienced as very short or long, and there may be a feeling of unreality. LÄS MER

  4. 3. Carbon nanofiller reinforced UHMWPE for orthopaedic applications : optimization of manufacturing parameters

    Författare :Evelina Enqvist; Mats Johansson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : Polymer composites research designed for orthopaedic applications are commonly focused on Ultra high molecular weight polyethylene (UHMWPE) reinforced by a variety of different nanoparticles. However, the high melt viscosity of UHMWPE renders conventional melt mixing techniques impossible for composite manufacturing. LÄS MER

  5. 4. Managerial Ownership, Controlling Shareholders and Firm Performance

    Författare :Jon Enqvist; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Mechanisms influencing natural killer cell recognition of tumour cells

    Författare :Monika Enqvist; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Natural killer (NK) cells are part of our innate immune defence against virus-infected and transformed cells. Through a yet undefined mechanism, expression of inhibitory receptors for self-HLA class I molecules endow NK cells with increased functionality. The process leading to gain of function through inhibition is known as NK cell education. LÄS MER