Sökning: "Structural setting"

Visar resultat 21 - 25 av 158 avhandlingar innehållade orden Structural setting.

  1. 21. Genesis and tectonic setting of the hypozonal Fäboliden orogenic gold deposit, northern Sweden

    Författare :Glenn Bark; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ore Geology; Malmgeologi;

    Sammanfattning : The well-known Skellefte Ore District, northern Sweden, hosts a large number of massive sulphide deposits, a few porphyry-type-deposits and a number of gold deposits in different geological settings. Southwest of this district a new ore province, the so called Gold Line, is presently being uncovered. LÄS MER

  3. 22. Adolescent positive mental health : policy, measurements, prevalence and correlates in a Chinese setting

    Författare :Cheng Guo; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: Adolescence is a period of one’s life that harbors many risks, but it also presents us with a number of fantastic opportunities for sustained health and wellbeing, through education and preventive efforts, for example. Mental health issues in adolescents have attracted the attention of the public and of academia. LÄS MER

  4. 23. Juvenile Crime in Context : The Significance of School Affiliation

    Författare :Julia Sandahl; Tove Pettersson; Bitte Modin; Robert Svensson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Juvenile crime; School context; Socio-structural approach; Multilevel analysis; Contextual theories of crime; kriminologi; Criminology;

    Sammanfattning : Within criminology, research on the school-crime relationship has been dominated by individual-level theories and methods. This thesis contributes to the relatively scarce literature focused on the socio-structural aspects of juvenile crime by applying a multidimensional approach to the urban school context of Stockholm. LÄS MER

  5. 24. Hardness of Approximating Constraint Satisfaction Problems and Their Variants in Presence of Additional Structural Assumptions

    Författare :Aleksa Stankovic; Johan Håstad; Per Austrin; Luca Trevisan; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hardness of Approximation; Approximation Algorithms; Label Cover; Vertex Cover; Unique Games Conjecture; Max-3-Lin; Universal Factor Graphs; Regular Constraint Satisfaction Problems; Inapproximerbarhet; Approximationsalgoritm; Label Cover; Vertex Cover; Unique Games Conjecture; Max-3-Lin; Universell Faktorgraf; Regelbundna Begränsningsproblem; Datalogi; Computer Science;

    Sammanfattning : This thesis studies how the approximability of some fundamental computational problems is affected by some additional requirements on the structure of the inputs. The problems studied in this thesis belong or are closely related to constraint satisfaction problems (CSPs), which are considered to be one of the most fundamental problems in theoretical computer science. LÄS MER

  7. 25. Social differences in injury risk in childhood and youth : exploring the roles of structural and triggering factors

    Författare :Karin Engström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Socioeconomic differences; health inequality; equalisation; peer victimisation; injury; children; youth; case-crossover design.;

    Sammanfattning : Injuries are a leading cause of mortality and morbidity among children and adolescents. Injury risks are not randomly distributed across social groups. The primary aim of this thesis is to increase knowledge about the determinants of the social distribution of injuries among children and adolescents. LÄS MER