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Visar resultat 1 - 5 av 253 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Evaluation of computer-assisted virtual treatment planning and template-guided surgery in dental implant treatment

    Författare :Ai Komiyama; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Dental implant; computer-guided surgery; surgical template; flapless surgery; immediate loading; CAD CAM technique; marginal bone loss; soft tissue condition; accuracy;

    Sammanfattning : One of the newly introduced concepts in implant dentistry is computer-guided surgery. The development of 3D implant planning software and imaging technology provide clinicians with 3D information of patients bony structures. LÄS MER

  3. 2. Essays on Financial Market Volatility

    Författare :Ai Jun HOU; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Nonparametric GARCH model; News Impact Curve; Interest rate volatility; MCMC; Markov Switching; Chinese stock markets; EMU stock markets;

    Sammanfattning : This thesis examines the volatility in the equity and short-term interest-rate markets, and the spillover from the short term interest rate market to the equity market. It consists of three papers and focuses on adapting and proposing models for the estimation and forecasting of financial market volatility. LÄS MER

  4. 3. Theoretical studies on photophysics and photochemistry of DNA

    Författare :Yuejie Ai; Yi Luo; Lluís Blancafort; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Kvantkemi; SRA - Molecular Bioscience; SRA - Molekylär biovetenskap;

    Sammanfattning : Theoretical studies on biological systems like nucleic acid and protein have been widely developed in the past 50 years and will continue to be a topic of interest in forefronts of natural science. In addition to experimental science, computational modeling can give useful information and help us to understand biochemical issues at molecular, atomic and even electronic levels. LÄS MER

  5. 4. Endoplasmic reticulum function in dendrites and dendritic spines of hippocampal neurons

    Författare :Ai Na Ng; Sektion IV; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Endoplasmic reticulum; primary culture; dendritic spines; live cell imaging; STIM1; carbachol; store-operated calcium entry; 3; familial Alzheimer s disease; 5-dihyroxyphenyglycine;

    Sammanfattning : In the hippocampus, dendritic spines are compartmentalized postsynaptic micro-domains in the excitatory synapse. Subsets of bigger and mushroom-shaped hippocampal dendritic spines contain tubules and cisterns of endoplasmic reticulum (ER) that are connected to the soma and dendrites of the neuron. LÄS MER

  7. 5. Essays on Investor Behavior and Trading Strategies in International Financial Markets

    Författare :Anton Hasselgren; Jarkko Peltomäki; Ai Jun Hou; Charlotte Christiansen; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; foreign exchange; speculators; hedge funds; investor behavior; trading strategies; information; market efficiency; företagsekonomi; Business Administration;

    Sammanfattning : This dissertation contains four articles that in different ways inform on investor behavior in international financial markets, their impact on the underlying market, and the trading strategies that they pursue.Article I studies how hedge funds herd in currency future contracts and how it is affecting the underlying market. LÄS MER