Sökning: "statistical shape variation"

Visar resultat 6 - 10 av 17 avhandlingar innehållade orden statistical shape variation.

  1. 6. Modelling the Variability of Bending Strength in Structural Timber - Length and Load Configuration Effects

    Författare :Tord Isaksson; Avdelningen för Konstruktionsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; code; reliability-based design; Weibull; test standard; load configuration effect; length effect; weak section; machine grading; visual grading; variability; Structural timber; bending strength; simulation; monte carlo simulation.; Building construction; Byggnadsteknik;

    Sammanfattning : The load carrying capacity of a beam of structural timber is dependent both on the span of the beam and the type of loading. The longer the beam and the more uniform the moment distribution, the lower the load carrying capacity. This phenomenon is due to the variability of material properties within a piece of timber. LÄS MER

  3. 7. Finding fitness : empirical and theoretical explorations of inferring fitness effects from population-level SNP data

    Författare :Bea Angelica Andersson; Xiao-Ru Wang; Åke Brännström; Tanja Slotte; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; distribution of fitness effects; site frequency spectra; missing data filtering; downsampling; imputation; sample size; population structure; inbreeding; selfing; homozygosity; Arabidopsis; Pinus; DFE-alpha; SLiM; population genomics; adaptation; biology; biologi; evolutionär genetik; evolutionary genetics; populationsbiologi; Population Biology; molekylärbiologi; Molecular Biology; Genetics; genetik;

    Sammanfattning : The distribution of fitness effects (DFE) describes the likelihood that a new mutation has a specific effect on the fitness of an individual in a given population. The shape of the DFE is a result of several factors such as population size, mating system and selective environment, and can in turn influence the evolutionary potential of a species. LÄS MER

  4. 8. Towards a Digital Twin for Individualized Manufacturing of Welded Aerospace Structures

    Författare :Hugo Hultman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; digital twin; non-nominal welding simulation; geometry assurance;

    Sammanfattning : The aerospace industry is constantly striving towards lower fuel consumption while maintaining a high standard with regards to safety and reliability. These increasing demands require the development of new methods and strategies for efficient and precise manufacturing processes. LÄS MER

  5. 9. Caught in the Maelstrom, Catching the Tide : Micro-level Responses to Climate-Related Hazards and Conflict

    Författare :Kristina Petrova; Hanne Fjelde; Nina von Uexkull; Gabriele Spilker; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; natural hazards; climate-related disasters; armed conflict; electoral violence; protests; riots; communal conflict; state institutions; disaster relief aid; climate mobilities; internal and international migration; Sub-Saharan Africa; Bangladesh; Pakistan.;

    Sammanfattning : This dissertation contributes to the literature on the nexus between climate-related disaster and conflict. One of the main sources of uncertainty regarding the effects of climate change on conflict stems from limited understanding of the driving mechanisms and the political contexts under which these effects materialize. LÄS MER

  7. 10. Structures in High-Dimensional Data: Intrinsic Dimension and Cluster Analysis

    Författare :Kerstin Johnsson; Matematik LTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : With today's improved measurement and data storing technologies it has become common to collect data in search for hypotheses instead of for testing hypotheses---to do exploratory data analysis. Finding patterns and structures in data is the main goal. LÄS MER