Search for dissertations about: "skewness"

Showing result 1 - 5 of 52 swedish dissertations containing the word skewness.

2. 1. Semi-Markov Models for Insurance and Option Rewards

   Author : Fredrik Stenberg; Dmitrii Silvestrov; Kimmo Eriksson; Nikolaos Limnios; Mälardalens högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; semi-Markov process; discrete time; insurance; actuarial; higher order reward; disability; variance; skewness; kurtosis; reward process; stochastic volatility; controlling semi-Markov process; Monte Carlo algorithm; convergence; optimal stopping; skeleton approximation; regime switching; semi-Markov modulated; European option; American option; Lévy process.; MATHEMATICS; MATEMATIK; Matematik tillämpad matematik;

   Abstract : This thesis presents studies of semi-Markov models for insurance and option rewards. The thesis consists of the introduction and six papers. The introduction presents the results of the thesis in an informal way.In paper A, a general semi-Markov reward model is presented. READ MORE

4. 2. Blind Enhancement of Harmonically Related Signals by Maximizing Skewness

   Author : Kubilay Ovacikli; Magnus Sandell; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

   Abstract : Rolling element bearings are used in rotating machinery in various industry branches. Their health status must be monitored continuously in order to establish proper operational conditions in a production process. READ MORE

5. 3. Essays on Income Risk and Inequality

   Author : Karl Harmenberg; Per Krusell; Fatih Guvenen; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; income risk; income inequality; consumption; durable goods; cyclical skewness; top-income inequality; gender gap; glass ceiling; assortative mating; Economics; nationalekonomi;

   Abstract : Consumption Dynamics under Time-Varying Unemployment Risk We study the response of households' demand for durable goods to fluctuations in unemployment risk. First, using survey data, we document that household durable expenditures react strongly to unemployment risk, while the effect on nondurable expenditures is indistinguishable from zero. READ MORE

6. 4. Essays on Gaussian Probability Laws with Stochastic Means and Variances : With Applications to Financial Economics

   Author : Anders Eriksson; Lars Forsberg; Menelaos Karanasos; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; Approximating a function of random variables; Skewness Modeling; Skewed GARCH process; Lévy Process; Option pricing; Statistik; Statistics; Statistik;

   Abstract : This work consists of four articles concerning Gaussian probability laws with stochastic means and variances. The first paper introduces a new way of approximating the probability distribution of a function of random variables. This is done with a Gaussian probability law with stochastic mean and variance. READ MORE

7. 5. Aspects of Moment Testing when p>n

   Author : Zhizheng Wang; Thomas Holgersson; Miguel Fonseca; Linnéuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; High-dimensional data; Asymptotic distribution; Kolmogorov condition; Monte Carlo simulation; Hypothesis testing; Skewness and kurtosis; Statistics Econometrics; Statistik;

   Abstract : This thesis concerns the problem of statistical hypothesis testing for mean vector as well as testing for non-normality in a high-dimensional setting which is called the Kolmogorov condition. Since we consider mainly the first and the second moment in testing for mean vector and we utilize the third and the fourth moment in testing for non-normality, this thesis concerns a more general moment testing problem. READ MORE