Sökning: "Peter Håkansson"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Peter Håkansson.

  1. 1. Ungdomsarbetslösheten - om övergångsregimer, institutionell förändring och socialt kapital

    Författare :Peter Håkansson; Ekonomisk-historiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ungdomsarbetslöshet; övergångsregim; socialt kapital; utbildning; riskpremie; risk; arbetslöshet; heltidsarbete; deltidsarbete; blind alley-jobs;

    Sammanfattning : Youth unemployment in Sweden has reached record levels during the first decade of the 21st century. In 1970, the unemployment rate for 20-24 year olds was approximately 2%. Now, forty years later, this rate has risen to 20%. Relative youth unemployment (youth unemployment in relation to unemployment for the 25-64 year olds) has also risen. LÄS MER

  3. 2. The United Nations Reformed : Responsibility, Protection and the Standing of States

    Författare :Peter Håkansson; Ronnie Hjorth; Per Jansson; Johan Eriksson; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; The United Nations; the responsibility to protect; protection of civilians; pluralism; anti-pluralism; standard of civilization; human rights; democracy; Förenta Nationerna; skyldighet att skydda; skydd av civila; pluralism; anti-pluralism; civilisationsstandard; mänskliga rättigheter; demokrati; Political science; Statsvetenskap;

    Sammanfattning : This study is about reform of the United Nations. The study does not address reform proposals that set out to change the organizational structure of the UN, but focuses on initiatives that affect the normative basis of the international society that the United Nations and the UN Charter enable and sustain. LÄS MER

  4. 3. Fast-Neutron Tomography using a Mobile Neutron Generator for Assessment of Steam-Water Distributions in Two-Phase Flows

    Författare :Peter Andersson; Staffan Jacobsson Svärd; Henrik Sjöstrand; Stephan Pomp; Ane Håkansson; Michael Österlund; Bernhard Ludewigt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Void distribution; neutron tomography; plastic scintillator; transmission measurements; neutron detection; Applied Nuclear Physics; Tillämpad kärnfysik;

    Sammanfattning : This thesis describes the measurement technique of fast-neutron tomography for assessing spatial distributions of steam and water in two-phase flows. This so-called void distribution is of importance both for safe operation and for efficient use of the fuel in light water reactors, which compose the majority of the world’s commercial nuclear reactors. LÄS MER

  5. 4. Optimization of Equipment for Tomographic Measurements of Void Distributions using Fast Neutrons

    Författare :Peter Andersson; Staffan Jacobsson Svärd; Henrik Sjöstrand; Ane Håkansson; Michael Österlund; Stephan Pomp; Rudi Van Nieuwenhove; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : This licentiate thesis describes a novel nondestructive measuring technique for determiningspatial distributions of two-phase water flows. In Boiling Water Reactors, which compose themajority of the world's commercial nuclear reactors, this so called void distribution is of importance for safe operation. LÄS MER

  7. 5. Development of a Methodology for Detecting Coolant Void in Lead-cooled Fast Reactors by Means of Neutron Measurements

    Författare :Peter Wolniewicz; Håkansson Ane; Christian Jammes; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LFR; fission chamber; nuclear; reactor; leak; criticality;

    Sammanfattning : In a lead-cooled fast reactor (LFR), small bubbles (in the order of one mm or less) may enter the coolant from a leaking steam generator. If such a leakage is undetected the small bubbles may eventually coalesce into a larger bubble in local stagnation zones under the active core. LÄS MER