Search for dissertations about: "Jackknifing"

Showing result 1 - 5 of 8 swedish dissertations containing the word Jackknifing.

  2. 1. Safe Distributed Control Allocation for Articulated Heavy Vehicles

    Author : Umur Erdinc; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control allocation; Heavy vehicles; jackknifing; electric vehicles; trailer swing; stability;

    Abstract : The electrification of trucks is now followed by the electrification of trailers. Additionally, the maximum allowed length of vehicle combinations has been increased in many countries to enhance efficiency. READ MORE

  4. 2. Aspects of analysis of small-sample right censored data using generalized Wilcoxon rank tests

    Author : Marie-Louise Öhman; Hans Nyquist; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Censored generalized Wilcoxon rank test statistics; Variance estimation; Jackknifing; Influence function; Gross error sensitivity; Break-Down point; Sensitivity curve; Location parameter estimation; Product-Limit estimator and Monte-Carlo Simulation; Statistics; computer and systems science; Statistik; data- och systemvetenskap; Statistics; statistik;

    Abstract : The estimated bias and variance of commonly applied and jackknife variance estimators and observed significance level and power of standardised generalized Wilcoxon linear rank sum test statistics and tests, respectively, of Gehan and Prentice are compared in a Monte Carlo simulation study. The variance estimators are the permutational-, the conditional permutational- and the jackknife variance estimators of the test statistic of Gehan, and the asymptotic- and the jackknife variance estimators of the test statistic of Prentice. READ MORE

  5. 3. Contributions to generalized Wilcoxon rank tests

    Author : Marie-Louise Öhman; Hans Nyquist; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Censored data rank sum tests; Gehan s test; Generalized Wilcoxon test; Jackknifing; Two sample problem; Simulation; Survival data; Variance estimation; Influence function; Gross error sensitivity; Sensitivity curve; Misclassification; Statistics; computer and systems science; Statistik; data- och systemvetenskap; Statistics; statistik;

    Abstract : In unbalanced small sample size problems with right censorings, the variance estmators of linear rank statistics, may be biased. This is the case with the commonly applied variance estimators for the generalized Wilcoxon rank test statistics of Gehan and Prentice. READ MORE

  6. 4. Taxonomy and Phylogeny of Catenulida (Platyhelminthes) with Emphasis on the Swedish Fauna

    Author : Karolina Larsson; Ulf Jondelius; Lena Gustavsson; Isabell Sanmartin; Tom Artois; Uppsala universitet; []
    Keywords : Biology; taxonomy; phylogeny; molecular phylogenies; cryptic species; micro-invertebrate; Biologi; Catenulida; Platyhelminthes;

    Abstract : This thesis focuses on phylogenetic and taxonomic studies of Catenulida (Platyhelminthes). Catenulida is a group of microscopic free-living worms mainly found in freshwater habitats. The Swedish catenulid fauna was previously virtually unknown. READ MORE

  7. 5. Phylogenetic studies in the Inuleae s. lat. (Asteraceae)

    Author : Pia Eldenäs; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; Plant Systematics; växtsystematik;

    Abstract : This thesis concerns phylogenetic problems in the tribe Inuleae s. lat. (Asteraceae). The genus Perralderia is revised. READ MORE