This habilitation thesis is based on a collection of articles dealing with wireless communications over time-variant channels. The wireless communication scenario is characterized by a high relative velocity between transmitter and receiver, fast changes of environment conditions for wave propagation, bursty frame based data transmission and by low-latency demands. This thesis addresses open pr...

A time minimizing assignment problem (TMAP) dealing with the allocation ofn jobs to m(< n) persons is considered in this paper. One job is to be allocated to exactly one person and each person does at least one job. All the persons start working on the jobs simultaneously. If a person is to do more than one job, he does them one after the other in any order. The aim of the present study is to f...

The witches’ broom disease of lime trees is a destructing disease caused by the bacterium Candidatus <span style="font-variant: normal; fon...

Crude Monte Carlo simulation (MCS) is the most robust and easily implemented method for performing time-variant reliability analysis (TRA). However, it inefficient, especially high problems. This paper aims to present a random called multilevel (MLMC) TRA enhance computational efficiency of crude MCS while maintaining its accuracy robustness. The proposed first discretizes time interval interes...

In this paper, we study ε-generalized weak s...

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In this paper, we establish some new results in ultra Bessel sequences and ultra Bessel sequences of subspaces. Also, we investigate ultra Bessel sequences in direct sums of Hilbert spaces. <span style="font-family: NimbusRomNo9L-Regu; font-size: 11pt; color: #000000; font-s...