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Visar resultat 1 - 5 av 35 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Dynamics and Performance of a Linear Genetic Programming System

    Författare :Frank D. Francone; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mutation; Genetic Programming; Homologous Crossover.; Crossover; Introns; Linear Genetic Programming; Code Bloat;

    Sammanfattning : Genetic Programming (“GP”) is a machine learning algorithm. Typically, Genetic Programming is a supervised learning algorithm, which trains on labeled training examplesprovided by the user. The solution output by GP maps known attributes to the known labels. LÄS MER

  3. 2. Safe air below EU air quality limit? : Studies of respiratory disease using primary healthcare data, with Case-Crossover study design

    Författare :Tahir Taj; NanoLund: Centre for Nanoscience; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 3. Finite element modelling of the mechanics of solid foam materials

    Författare :Steven Ribeiro-Ayeh; Dan Zenkert; Andrew M. Kraynic; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering design; point-stress criterion; bi-material interface; foam; cellular sollid; micro-mechanical modelling; Konstruktionsteknik; Construction engineering; Konstruktionsteknik;

    Sammanfattning : Failure of bi-material interfaces is studied with the aim to quantify the influence of the induced stress concentrations on the strength of the interfaces. A simple point-stress criterion, used in conjunction with finite element calculations, is evaluated to provide strength predictions for bi-material bonded joints and inserts in polymer foam. LÄS MER

  5. 4. Case-crossover studies of the triggering of disease : myocardial infarction and Ménières disease

    Författare :Jette Möller; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Myocardial infarction; Ménières disease; case-crossover; trigger; physical exertion; anger; sexual activity; life events; misclassification; recall bias;

    Sammanfattning : The general objective of this thesis is to contribute to understanding of the aetiology of myocardial infarction. It focuses on identification and risk-quantification of the factors acting late in the causal chain towards manifest myocardial infarction, so-called triggers, by using the case-crossover design. LÄS MER

  7. 5. 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