Sökning: "stratification"

Visar resultat 6 - 10 av 467 avhandlingar innehållade ordet stratification.

1. 6. Distribution and Differences : Stratification and the System of Reproduction in a Swedish Peasant Community 1620-1820

   Författare :Jonas Lindström; Maria Ågren; Jan Lindegren; Carl-Johan Gadd; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Peasant; stratification; inequality; reproduction; resources; distribution; social mobility; household; family; community; landholding; principles; conditions; social structure; feudalism; early modern period; Björskog; Sweden; agrarian history; social history; History; Historia;

   Sammanfattning : This dissertation examines the character, conditions and change of peasant stratification in early modern Sweden. Wherever and whenever one looks, one finds that resources were unevenly spread among peasant households. In the literature, there are different, and conflicting, views compatible with this finding. LÄS MER

3. 7. Steam condensation in a water pool and its effect on thermal stratification and mixing

   Författare :Ignacio Gallego-Marcos; Pavel Kudinov; Walter Villanueva; Dominique Bestion; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steam injection; EHS EMS; blowdown pipes; spargers; chugging; oscillatory bubble; CFD; condensation pool; stratification; mixing; Engineering Mechanics; Teknisk mekanik;

   Sammanfattning : The Pressure Suppression Pool (PSP) of a Boiling Water Reactor (BWR) is a large heat sink designed to limit the containment pressure by condensing steam released from the primary coolant system. The development of thermal stratification is a safety concern since it leads to higher containment pressures than in completely mixed conditions, and can affect the performance of systems such as the emergency core cooling and containment spray, which the use PSP as a source of water. LÄS MER

4. 8. Early Invasive Strategy in Unstable Coronary Artery Disease : Outcome in Relation to Risk Stratification

   Författare :Erik Diderholm; Lars Grip; Uppsala universitet; []
   Nyckelord :Medical sciences; Unstable angina; non-ST elevation myocardial infarction; risk stratification; coronary angiography; revascularisation; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; kardiologi; Cardiology;

   Sammanfattning : In unstable coronary artery disease (CAD) it still is a matter of debate which patients should undergo early revascularisation. In the FRISC II study (n=2457) an early invasive strategy was, compared to a primarily non-invasive strategy, associated with reduced mortality and myocardial infarction (MI) rates. LÄS MER

5. 9. Skew-symmetric matrix pencils : stratification theory and tools

   Författare :Andrii Dmytryshyn; Bo Kågström; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Investigating the properties, explaining, and predicting the behaviour of a physical system described by a system (matrix) pencil often require the understanding of how canonical structure information of the system pencil may change, e.g., how eigenvalues coalesce or split apart, due to perturbations in the matrix pencil elements. LÄS MER

7. 10. Education, Stratification and Reform : Educational Institutions in Comparative Perspective

   Författare :Marcus Österman; Joakim Palme; Karl-Oskar Lindgren; Jan Teorell; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Detracking; Education; Educational institutions; Educational inequalities; Education policy; Educational reform; Educational systems; Equality; Political economy; Political Parties; Social Trust; Tracking; Vocational education; Vocational training; Varieties of Capitalism; Statskunskap; Political Science;

   Sammanfattning : The main argument of this thesis is that research has to take the institutional character of education seriously. Educational institutions carry considerable weight for outcomes of education and their design is a matter of intense political debate. LÄS MER