Search for dissertations about: "Qi Qi"

Showing result 16 - 20 of 73 swedish dissertations containing the words Qi Qi.

  2. 16. Predictive action in infancy : Evidence of early prospective behavior

    Author : Qi Feng; Louise Rönnqvist; Mikael Heimann; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Psychology; Psykologi; Psychology; psykologi;

    Abstract : How do young infants understand and act on their constantly changing environment? An action perspective on motor development was taken into account. The present thesis investigated perception guided predictive action in 6-month-old infants, namely, head tracking and reaching for an object moving on a pre-defined trajectory, linear or nonlinear, fully visible or partially occluded. READ MORE

  4. 17. Minkowski Measure of Asymmetry and Minkowski Distance for Convex Bodies

    Author : Qi Guo; Sten Kaijser; Marek Lassak; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematical analysis; Matematisk analys; Mathematical analysis; Analys;

    Abstract : This thesis consists of four papers about the Minkowski measure of asymmetry and the Minkowski (or Banach-Mazur) distance for convex bodies.We relate these two quantities by giving estimates for the Minkowski distance in terms of the Minkowski measure. READ MORE

  5. 18. Development of a PKM control system by design, modelling, simulation and integration

    Author : Qi Huang; KTH; []
    Keywords : Control System Design; PKM machines; Kinematic transformation; Dynamic modelling; Motion control simulation;

    Abstract : PKM (ParallelKinematicMechanism) machines have received increasing interestfrom industries. Nevertheless, they didn't turn out goodresults in control performances as desired. One of the reasonsis the unsuitability of the available control systems for theparallel mechanisms.This thesis presents a process to develop a PKM controlsystem. READ MORE

  6. 19. Studies of Hydrogenations and Isomerizations of Olefins and Alkylations of Amines Using Iridium Catalysts

    Author : Jia-Qi Li; Pher Andersson; Jianliang Xiao; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Iridium; Asymmetric; Hydrogenation; Isomerization; Alkylation; Organisk kemi; Organic Chemistry;

    Abstract : This thesis describes three types of reactions that were carried out using iridium catalysts.The first type is the iridium-catalyzed asymmetric hydrogenation of olefins. In paper I, the preparation of a new type of bicyclic thiazole-phosphine based iridium complex was described. READ MORE

  7. 20. Electrochemical Capacitors for Miniaturized Self-powered Systems

    Author : Qi Li; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Electrolyte materials; Electrochemical capacitors; AC line filters; Energy storage; Miniaturized self-powered systems; Electrode materials;

    Abstract : Miniaturized self-powered systems with harvest-store-use architectures have been recognized as a key enabler to the internet-of-things (IoT), and further the internet-of-everything (IoE), 5G communication and tactile internet. Electrochemical capacitors (ECs), also known as supercapacitors, are promoted to be the energy storage component in such systems, because of their advantages such as an almost limitless cycle life that is ideal for the vision of “fit-and-forget” maintenance-free networks. READ MORE