Sökning: "Lars Andrén"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Lars Andrén.

  1. 1. Essays in International Trade : Measurement, Product Quality, Input-Output Modelling and Tax Evasion

    Författare :Lars M Widell; Lars Lundberg; Lars Hultkrantz; Daniela Andrén; Joakim Gullstrand; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Factor content of trade; human capital; vertical intra-industry trade; product quality; Input–output modelling; CTA; ITA; Tax Evasion; Africa; Economics; Nationalekonomi;

    Sammanfattning : This thesis consists of four independent essays that deal with several measurement aspects within the field of international trade. The measurement problems addressed are related to measuring the human capital content of trade in exports relative to imports or measuring tax evasionEssay 1, The Human Capital Content of Trade and its Measurement. LÄS MER

  3. 2. Freezing Temperature Flows in Railway Tunnels and its Consequence on the Rock Supporting Structure, the Rock and the Reinforcing Elements

    Författare :Anna Andrén; Lars-Olof Dahlström; Erling Nordlund; Lars O Ericsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tunnel; frost penetration; ice formation; freeze-thaw test; frost shattering; temperature measurement; maintenance; degradation of rock and shotcrete; cold climate; Tunnel; köldinträngning; isbildning; frystester; frostsprängning; temperaturmätning; underhåll; nedbrytning av berg och sprutbetong; kallt klimat; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Water in the surrounding rock mass flows into the tunnel via naturally occurring joints and via cracks caused by the blasting used to excavate the tunnel. The most common method in Sweden to reduce or prevent leakage problems are first and foremost the use of grouting. LÄS MER

  4. 3. On Renal Artery Stenosis

    Författare :Hampus Eklöf; Rickard Nyman; David Bergqvist; Bertil Andrén; Lars Lönn; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Renal artery obstruction; Comparative studies; Contrast media; adverse events; Revascularization; Radiologisk forskning; Radiological research; Radiologisk forskning;

    Sammanfattning : Renal artery stenosis (RAS) is a potentially curable cause of hypertension and azotemia. Besides intra-arterial renal angiography there are several non-invasive techniques utilized to diagnose patients with suspicion of renal artery stenosis. LÄS MER

  5. 4. Inflammation and prostate carcinogenesis : influence of immune characteristics and early-adulthood exposure to inflammatory conditions on prostate cancer risk

    Författare :Henrik Ugge; Katja Fall; Sabina Davidsson; Jessica Carlsson; Ove Andrén; Lars Henningsohn; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prostate cancer; inflammation; Cutibacterium acnes; acne; appendicitis; cytokines; circulating; inflammation marker; IL6; CXCL8;

    Sammanfattning : Chronic inflammation has been implicated in the development of several types of cancer, and evidence from observational and animal studies suggests that it may play a role also in prostate carcinogenesis. Recent observations have brought Cutibacterium acnes (C. acnes) forward as a possible causative agent in pro-oncogenic prostatic inflammation. LÄS MER

  7. 5. On the Ising problem and some matrix operations

    Författare :Daniel Andrén; Roland Häggkvist; Henrik Eriksson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ising problem; phase tansition; matrix multiplicatoin; matrix inversion; Discrete mathematics; Diskret matematik;

    Sammanfattning : The first part of the dissertation concerns the Ising problem proposed to Ernst Ising by his supervisor Wilhelm Lenz in the early 20s. The Ising model, or perhaps more correctly the Lenz-Ising model, tries to capture the behaviour of phase transitions, i.e. how local rules of engagement can produce large scale behaviour. LÄS MER