Search for dissertations about: "Williamson"

Showing result 1 - 5 of 18 swedish dissertations containing the word Williamson.

  2. 1. Convergence and stability analysis of stochastic optimization algorithms

    Author : Måns Williamson; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; numerical analysis; optimization; stochastic optimization; machine learning;

    Abstract : This thesis is concerned with stochastic optimization methods. The pioneering work in the field is the article “A stochastic approximation algorithm” by Robbins and Monro [1], in which they proposed the stochastic gradient descent; a stochastic version of the classical gradient descent algorithm. READ MORE

  4. 2. NMR as a tool in drug research : Structure elucidation of peptidomimetics and pilicide-chaperone complexes

    Author : Mattias Hedenström; Jan Jan Kihlberg; Ingmar Sethson; Michael P. Williamson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; NMR; structure calculations; peptidomimetics; desmopressin; Leu-enkephalin; chemical shift mapping; pilicides; chaperones; urinary tract infections.; Organisk kemi; Organic chemistry; Organisk kemi; organisk kemi; Organic Chemistry;

    Abstract : In the last decades NMR spectroscopy has become an invaluable tool both in academic research and in the pharmaceutical industry. This thesis describes applications of NMR spectroscopy in biomedicinal research for structure elucidation of biologically active peptides and peptidomimetics as well as in studies of ligand-protein interactions. READ MORE

  5. 3. Structuring Fashion : Department Stores as Situating Spatial Practice

    Author : Daniel Koch; Lars Marcus; Rolf Gullström Hughes; Staffan Henriksson; Judith Williamson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; architecture; architecture theory; architectural morphology; spatial systems; department stores; commercial cultures; shopping; consumption; social structures; fashion; identity; public culture; relational space; space syntax; Architecture; Arkitektur;

    Abstract : This dissertation investigates department stores as complex spatial and cultural buildings, in which values and ideas are expressed, negotiated, and produced. Situated in a cultural context commonly referred to as a society of consumption, where identity and social structures are worked out through consumption rather than production, the query turns to a specific act of consumption: that of shopping. READ MORE

  6. 4. The role of the mitochondrial membrane system in apoptosis : the influence of oxidative stress on membranes and their interactions with apoptosis-regulating Bcl-2 proteins

    Author : Martin Lidman; Gerhard Gröbner; Magnus Wolf-Watz; Philip Williamson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bax; Bc-2; apoptosis; mitochondria; membranes; oxidized lipids; NMR; calorimetry; circular dichroism; biokemi; Biochemistry; fysikalisk kemi; Physical Chemistry;

    Abstract : Apoptosis is a crucial process in multicellular organisms in sculpting them, especially during embryogenesis. In addition, apoptosis is responsible for the clearance of harmful or damaged cells which can otherwise be detrimental to the organism. READ MORE

  7. 5. Shedding light on the bluff body wake instability

    Author : Renzo Trip; Jens Fransson; Charles Williamson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

    Abstract : The flow around a vehicle, for example, results in a large resistance and can generate a complex swirl pattern behind the body of the vehicle, which can lead to strong alternating lateral forces. There is therefore a clear need for more fundamental understanding of the instability of this so-called wake region, which arises behind bluff bodies. READ MORE