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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Separability of the intensity function of a Poisson point process
 Petráková, Martina ; Dvořák, Jiří (advisor) ; Prokešová, Michaela (referee)
Our main interest in the thesis is Poisson point process and one of its charac- teristics - intensity function. Whenever Poisson process has intensity function, its distribution is uniquely determined by it. Our main goal is to determine how to deduce from observed data whether intensity function is separable. We present a formal test of this hypothesis assuming exponential model of the in- tensity function depending on finite number of parameters. Properties of this test are then examined in a simulation study. 1
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Non-homogeneous Poisson process - estimation and simulation
 Vedyushenko, Anna ; Pešta, Michal (advisor) ; Pawlas, Zbyněk (referee)
This thesis covers non-homogeneous Poisson processes along with estimation of the intensity (rate) function and some selected simulation methods. In Chapter 1 the main properties of a non-homogeneous Poisson process are summarized. The main focus of Chapter 2 is the general maximum likelihood estimation procedure adjusted to a non-homogeneous Poisson process, together with some recommen- dations about calculation of the initial estimates of the intensity function param- eters. In Chapter 3 some general simulation methods as well as the methods designed specially for log linear and log quadratic rate functions are discussed. Chapter 4 contains the application of the described estimation and simulation methods on real data from non-life insurance. Furthermore, the considered sim- ulation methods are compared with respect to their time efficiency and accuracy of the simulations. 1
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FEM simulation of pulsed laser seam welding
 Lapšanská, Hana ; Havelková, Martina ; Chmelíčková, Hana
Welding simulations became very popular in last years because they can provide us with much interesting information about the internal material processes or heat source – material interactions. Usually continual seam welding was simulated. Since the pulsed laser welding systems were developed and disseminated, the need of pulsed welding simulations came out. Finite element SYSWELD welding simulation tool was adapted to model and simulate pulsed laser seam welding, also called spot overlapping welding. This paper describes basic principles of such simulation and shows some of its possible outputs.
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