Sökning: "physical performance"

Visar resultat 31 - 35 av 1861 avhandlingar innehållade orden physical performance.

  1. 31. Electrocatalyst materials for low-temperature hydrogen fuel cells

    Författare :Gerard Montserrat Siso; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catalyst; Alloys.; Oxygen Reduction; Nanofabrication; Electrode; Fuel Cell; PEMFC; Hydrogen Oxidation; Model System; Thin Film; AEMFC;

    Sammanfattning : Fuel cells have emerged as an alternative to satisfy the need of energy systems with net-zero emissions. Although fuel cells date back to the 1800s, it is only during the last decades that research and development has enabled true commercialization. LÄS MER

  2. 32. Characterization of Novel Electrolytes for Li-Batteries

    Författare :Luis Aguilera Medina; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TFSI; pyrrolidinium; lithium ion battery; SAXS; organic solvent; Raman scattering; electrolyte; ionic liquid; imidazolium;

    Sammanfattning : In a world that strives toward greener and more sustainable energy solutions, the need for suitable energy storage devices has brought Lithium-ion batteries (LIB) into focus of research. Although the Lithium-ion battery is a consolidated technology for portable applications, capacity, cost, and not the least safety aspects are major concerns when it comes to its implementation into large-scale energy storage applications, such as electric vehicles. LÄS MER

  3. 33. Electronic Structure of π-Conjugated Materials and Their Effect on Organic Photovoltaics

    Författare :Chuanfei Wang; Mats Fahlman; Xianjie Liu; Ergang Wang; Zong-Xiang Xu; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The great tunability of structure and electronic properties of π-conjugated organic molecules/polymers combined with other advantages such as light weight and flexibility etc., have made organic-based electronics the focus of an exciting still-growing field of physics and chemistry for more than half a century. LÄS MER

  4. 34. Strength training for physical performance and injury prevention in sports. Individualised and supervised training for female athletes

    Författare :Sofia Augustsson Ryman; Göteborgs universitet; []
    Nyckelord :Strength training; Physical performance; Functional tests; Strenght assessment; Injury prevention; Physical coach; Young female athletes; Volleyball;

    Sammanfattning : The overall purpose of this thesis was to obtain knowledge about individualised, supervised strength and conditioning programmes for physical performance and injury prevention in female athletes. Data are presented both on the influence of individualisation and supervision during resistance training for physical performance and injury prevention and on the athletes’ experience of resistance training and the role of the physical coach. LÄS MER

  5. 35. Dynamics and Performance of a Linear Genetic Programming System

    Författare :Frank D. Francone; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mutation; Genetic Programming; Homologous Crossover.; Crossover; Introns; Linear Genetic Programming; Code Bloat;

    Sammanfattning : Genetic Programming (“GP”) is a machine learning algorithm. Typically, Genetic Programming is a supervised learning algorithm, which trains on labeled training examplesprovided by the user. The solution output by GP maps known attributes to the known labels. LÄS MER