Modeling of Information Processes in Social Networks

In order to model information dissemination in social networks, a special methodology of sampling statistical data formation has been implemented. The probability distribution laws of various characteristics of personal and group accounts in four social networks are investigated. Stochastic aspects of interrelations between these indicators were analyzed. The classification of groups of social network users is proposed, and their characteristic features and main empirical regularities of mutual transitions are marked. Regression models of forecasting changes in the number of users of the selected groups have been obtained

Modeling of Information Processes in Social Networks

In order to model information dissemination in social networks, a special methodology of sampling statistical data formation has been implemented. The probability distribution laws of various characteristics of personal and group accounts in four social networks are investigated. Stochastic aspects of interrelations between these indicators were analyzed. The classification of groups of social network users is proposed, and their characteristic features and main empirical regularities of mutual transitions are marked. Regression models of forecasting changes in the number of users of the selected groups have been obtained

The use of antibiotics in food technology: the case study of products from Moscow stores

The global threat of the 21st century is the uncontrolled use of antibiotics. Many bacteria have developed resistance to antibacterial drugs, resulting in drug-resistant superbugs. The article presents the results of the case study of Russian food products from the stores in the city of Moscow and analyzes them for the presence of antibiotics. The object of the study is the Russian market of animal products. The subject of the study is detecting the presence of antibiotics in food products on the Russian market. As a result of studying of the range of food products of animal origin, it has been revealed that the amount of harmful substances (such as antibiotics) meets the MPC standards, according to the Russian GOST standards. The research results obtained in laboratory conditions are of interest for assessing the prevalence of antibiotic residues in meat and dairy products. Based on the monitoring studies, it has been found out that most of the residual antibiotics were present in poultry meat. In all three samples, the antibiotic enrofloxacin was found but the MPC of the antibiotic was not exceeded (the norm is not more than 100 μg / kg)

Physiological Evaluation of the Cardiology System of Nonresident Students at Different Training Periods

The article provides a physiological assessment of the state of the cardiovascular system of students in different periods of the academic year. The study was conducted on a sample of 311 nonresident and Moscow students. An analysis of the spectral characteristics of HRV showed that during the examination session the total power of the spectrum decreased compared with the indicators during the training session. During the intercessional period, the total spectrum power in the studied group of students amounted to 4856.34 ± 645 ms2, and during the examination session this indicator decreased by 35.8% and amounted to 3119.41 ± 522 ms2. A comparative analysis of the HRV activity wave spectrum of the studied student sample showed significant changes (p <0.05) of students’ functional state indicators (SDNN, LF, HF, LF / HF; SI, ARS). According to the studied indicators, a growth trend was noted: (SDNN: from 43.89 ± 8.12 to 78.03 ± 3.86; LF: 27.78 ± 7.33 42.56 ± 4.51; LF / HF: 0.67 ± 0.03 1.72 ± 0.02; SI: 102.95 ± 11.3 467.77 ± 6.1; ARS: 1-2 ± 0.12 5-7 ± 0.01 ) and a decrease in HF (41.74 ± 5.3 to 24.67 ± 2.94)

Features of methane emission into the atmosphere over buried landfill bodies in urbanized ecosystems of Moscow

On the outskirts of cities landfill bodies are formed, the territories of which are later used in urban planning. Over the buried landfill soils which represent construction and household garbage, methane flows are formed, which worsen the environmental conditions of the territories and negatively affect the psychosomatic health of residents. The goal was to study methane emissions from various buried landfills in Moscow. Our study on urbanized ecosystems in Moscow revealed different methane emissions in the soils. Thus, over young landfill bodies, the concentration of methane in the soils was 8 -16 ppm. This led to the release of methane into the atmosphere of the capital city. In the old landfill bodies, the concentration of methane in the soil was 1-2 ppm and did not cause methane emissions into the urban atmosphere. The analysis of the obtained data revealed the absorption of methane by soils on old landfill bodies at high and very high methane oxidation (Lobochevsky, Zyuzinskaya, Brateevskaya, Kashirskoe Highway and Ochakovka Streets). For organomineral horizons of replantozems with an increased content of organic matter and a loamy granulometric composition, increased methane formation and oxidation of autochthonous gas with undetected emission were detected.In technogenic and gray-humus horizons of urbanozems, methane formation and methane oxidation were reduced