Sökning: "structural break"

Visar resultat 1 - 5 av 68 avhandlingar innehållade orden structural break.

  1. 1. Structural and biochemical insights into biosynthesis and degradation of N-glycans

    Författare :Tom Reichenbach; Christina Divne; David Drew; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; N-glycan; biosynthesis; degradation; glycosyltransferase; glycoside hydrolase; biofuel; enzyme; membrane protein; Bioteknologi; Biotechnology;

    Sammanfattning : Carbohydrates are a primary energy source for all living organisms, but importantly, they also participate in a number of life-sustaining biological processes, e.g. cell signaling and cell-wall synthesis. The first part of the thesis examines glycosyltransferases that play a crucial role in the biosynthesis of N-glycans. LÄS MER

  3. 2. Essays on Unit-Root Testing and on Discrete-Response Modelling of Firm Mergers

    Författare :Nikolay Angelov; Per Johansson; Steinar Strøm; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; unit root; structural break; LR test; stationary alternative; matching; firm mergers; discrete choice; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : Essay 1 investigates the time-series properties of the price of iron ore. The focus is on unit-root testing in the presence of a structural break. Unit-root tests with or without structural breaks are applied to historical prices of five different qualities of Swedish and Brazilian iron ore. Tests with exogenous or endogenous breaks are analyzed. LÄS MER

  4. 3. Essays on Panel Cointegration

    Författare :Joakim Westerlund; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik; Cross-Sectional Dependence; Common factor restriction; Feldstein-Horioka Puzzle; Fisher Hypothesis; economic policy; economic theory; economic systems; Economics; econometrics; Structural Break.; Sieve Bootstrap; Information Criteria; Residual-Based Cointegration Test; Panel Cointegration; Monte Carlo Simulation; Model Selection; International R D Spillovers; International Health Care Expenditures;

    Sammanfattning : This thesis develops new techniques for analyzing cointegrated relationships in panel data. The first chapter is introductory while the remaining six contain the main contributions. LÄS MER

  5. 4. DNA double-strand break repair in ascomycetes

    Författare :Jiang Chen; Stefan Åström; Michael Lisby; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; utvecklingsbiologi; Developmental Biology;

    Sammanfattning : Nonhomologous end joining (NHEJ) and homologous recombination (HR) are two pathways for DNA double strand break (DSB) repair. We found that the NHEJ protein Nej1 interacted physically with the HR protein Srs2, which was dependent on phosphorylation of Nej1 by Dun1. Srs2 recruitment to a DSB partly relied on Nej1 and Dun1. LÄS MER

  7. 5. Structural and sedimentological reconstruction of the inverted Vargfors basin : a base for 4D-modelling

    Författare :Tobias Bauer; Peter Sorjonen-Ward; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

    Sammanfattning : The Palaeoproterozoic Skellefte mining district in northern Sweden covers an area of 120 by 30 km and is one of the most important mining districts in Europe, producing mainly Zn, Cu, Pb, As and Au from volcanogenic massive sulfide (VMS) and orogenic gold deposits.Detailed mapping of structures and stratigraphy within the sedimentary Vargfors Group combined with a structural analysis revealed a syn-extensional fault pattern of NW-SE-trending normal faults and associated NE-SW-trending transfer faults, creating the segmented sedimentary Vargfors basin. LÄS MER