Product of Three Random Variables and its Application in Relay Telecommunication Systems in the Presence of Multipath Fading, Journal of Telecommunications and Information Technology, 2019, nr 1

In this paper, the product of three random variables (RVs) will be considered. Distribution of the product of independent random variables is very important in many applied problems, including wireless relay telecommunication systems. A few of such products of three random variables are observed in this work: the level crossing rate (LCR) of the product of a Nakagami-m random variable, a Rician random variable and a Rayleigh random variable, and of the products of two Rician RVs and one Nakagami-m RV is calculated in closed forms and presented graphically. The LCR formula may be later used for derivation of average fade duration (AFD) of a wireless relay communication radio system with three sections, working in the multipath fading channel. The impact of fading parameters and multipath fading power on the LCR is analyzed based on the graphs presented

The limited Frank's chiral amplification model

93-96Frank's law of mass action-based model of chiral amplification is modified so as to avoid the unlimited increase in the concentration of one enantiomer. The basic features of this limited Frank model could be established without knowing the actual form of the solution of the respective system of differential equations. The model predicts two distinct time-evolutions of the system, one leading to complete monochirality and the other resulting in a racemic final state. The conditions for each of the two possible terminations of the process are established; they depend on the ratio of two certain rate constants and are independent of the initial composition of the system

Coping Strategies of Economically (Partially) Inactive Households: The Case of Croatia

How do households with inactive or unemployed members face growing risks and uncertainty? The present study tackles this problem with a case study on Croatia, a country at the bottom of the European Union’s (EU) scale of economic activity rate. The low level of activity that has characterized Croatia for more than twenty years has been accompanied by a continuously high unemployment rate, which has further increased since 2009. In this context, households with (long-term) inactive or unemployed members have had to develop alternative coping strategies. In order to identify and examine these strategies, in 2014 we conducted a mixed-method study, including a quantitative survey of 453 households and 37 semi-structured interviews. We identified six household strategies, more or less ‘successful’ in terms of the household’s material position. In this essay we further examine these strategies’ characteristics and implications, with a focus on the profiles of households employing specific strategies

Carbonate, oxalato and malonato bridged Cu(II) and Co(II) complexes with an octaazamacrocyclic ligand

Four new Cu(II) and Co(II) complexes having an octaazamacrocyclic ligand derived from cyclam, N,N'N,",N'''-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane, with either an mu-carbonato, oxalato or malonato as the additional ligand were isolated and investigated by elemental analysis, electronic and IR spectroscopy, as well as molar conductivity, magnetic and cyclic voltammetry (CV) measurements. Their microbiological activity was also tested. Binuclear or tetranuclear structures, depending on the bridging ligand and metal ion, was proposed

Product of Three Random Variables and its Application in Relay Telecommunication Systems in the Presence of Multipath Fading

In this paper, the product of three random variables (RVs) will be considered. Distribution of the product of independent random variables is very important in many applied problems, including wireless relay telecommunication systems. A few of such products of three random variables are observed in this work: the level crossing rate (LCR) of the product of a Nakagami-m random variable, a Rician random variable and a Rayleigh random variable, and of the products of two Rician RVs and one Nakagami-m RV is calculated in closed forms and presented graphically. The LCR formula may be later used for derivation of average fade duration (AFD) of a wireless relay communication radio system with three sections, working in the multipath fading channel. The impact of fading parameters and multipath fading power on the LCR is analyzed based on the graphs presented