The performance of the multi-input multi-output (MIMO) systems can be improved by spatial modulation. By using spatial modulation, the transmitter can select the best transmit antenna based on the channel variations using channel state information (CSI). Also, the modulation helps the transmitter to select the best modulation level such that the system has the best performance in all situations. Hence, in this paper, two issues are considered including spatial modulation and information modulation selection. For the spatial modulation, an optimal solution for obtaining the probability of selecting antenna is calculated and then Huffman coding is used such that the transmitter can select the best transmit antenna to maximize the channel capacity. For the information modulation, a multi quadrature amplitude modulation (MQAM) strategy is used. In this modulation, the modulation size is changed based on the channel state variations; therefore, the best modu- lation index is used for transmitting data in all channel situations. In simulation results, the optimal method is compared with Huffman mapping. In addition, the effect of modulation on channel capacity and a bit error rate (BER) is shown.

Animals as a source of organs and tissues for xenotransplantation could become a backup solution for the growing shortage of human donors. The presence of human xenoreactive anti- bodies directed against Galα1,3Gal antigens on the cell surface of a pig donor triggers the activa- tion of the complement leading to a hyperacute reaction. The development of genetic engineer- ing techniques has enabled the modification of genomes by knocking in and/or knocking out genes. In this paper, we report the generation of modified pigs with ZFN mediated disruption of the GGTA1 gene encoding the enzyme responsible for synthesis of Galα1,3Gal antigens. ZFN plasmids designed to target the exon 9 region of the pig GGTA1 gene encoding the catalytic domain were injected into the pronuclei of fertilized egg cells. Among 107 piglets of the F0 gene- ration analyzed, one female with 9-nt deletion in exon 9 of the GGTA1 gene was found. 13 of 33 piglets of the F1 generation represented the +/- GGTA1 genotype and 2 of 13 F2 piglets repre- sented the -/- GGTA1 genotype. No changes in the animals’ behavior, phenotype or karyotype were observed. Analysis confirmed heredity of the trait in all animals. A complex functional analysis of the modified animals, including flow cytometry, human serum cytotoxicity test and immunohistochemical detection, was performed to estimate the phenotype effect of genetic modification and this indicated an efficient GGTA1 knock-out in modified pigs.

The main target during management of a male pediatric patient with clinical signs of acute scrotum is the timely diagnosis, in order not to jeopardize the viability of the affected testicle. Thorough evaluation of the patient’s medical history, symptomatology, clinical and ultrasonographic findings, con-stitutes the basis of the diagnostic procedure. After comprehensive research of the relevant literature, we highlight the remaining difficulties in the evaluation of the clinical and ultrasonographic findings for the accurate diagnosis of the acute scrotum. In conclusion, it is worth emphasizing on the following: a. the most common diseases that come under the diagnosis of the acute scrotum may present with similar symptoms, b. in neglected cases the diagnostic approach becomes more difficult, constituting the evalua-tion of the pathognomonic clinical signs challenging, and c. inability to exclude the diagnosis of spermatic cord torsion should be an indication for the surgical exploration of the affected hemiscrotum.

The human health depends on environmental conditions in which we live, There arc no uniform methods which can estimate the influence of the environment on the human health and the health hazard resulting from this exposure. There arc no parameters, which can describe condition of environment in relation to health effects either. The paper discusses the Environmental Health Indicators ( elaborated by WHO experts) which arc indicative of influence of the environment on the human health, so they point to and describe the relationship between health and environment. There have been shown practical use of Environmental Health Indicators to estimate water and sanitation quality in the Silesia region. There have been presented methods ot' results calculating and interpreting. Indicators were adapted to methods and procedures of data collection used in Poland.

The paper presents an overview of scaling models used for determining hydrodynamic parameters of Circulating Fluidized Bed boilers. The governing equations and the corresponding dimensionless numbers are derived and presented for three different approaches to the scaling law of fluidized beds: classical dimensional analysis, differential equations and integrated solutions and experimental correlations. Some results obtained with these equations are presented. Finally, the capabilities and limitations of scaling experiments are discussed.

The present writer comments upon Wiesław Boryś’s article on etymological research in Poland. (1) The present writer claims that in all languages the form of words depends on three main factors, not only on regular sound change and analogical development, but also on what he calls irregular sound change due to frequency. Word groups, words and morphemes which are very frequently used sometimes show irregular reductions, e. g. Polish wasza miłość> waść, podobno> ponoor *(děl)-ajetь> (dział)-a. The present writer reproaches Boryś that he does not mention irregular sound change due to frequency although in Polish texts this development sometimes occurs in more than 60% of cases. (2) The present writer criticizes the laryngeal theory. (3) The present writer criticizes Kuryłowicz’s opinion according to which the Indo-European apophony e/o was of analogical origin. (4) The present writer draws attention to an important difference between his theory of irregular sound change due to frequency, which concerns all languages of the world, and Winter’s “law” which deals only with one language, namely Balto-Slav.

The aim of my paper is to distinguish groups of semantic motivations that have become the basis for the formation of words or word associations expressing obviousness. The study covered various European languages with particular emphasis on the Slavic languages. On the basis of the research, the following groups were distinguished: 1) knowledge and understanding; 2) sight, perception and clearness; 3) talking and adjudication; 4) nature; norm and custom; 5) consequence; 6) confidence, trust and security.

Author confronts various problems the historian of mentality has to deal with, basing on the last decade publications by Polish scientists.