Winter and summer zooplankton community and environmental parameters data of thirteen lakes located in Minnesota and Wisconsin

This data set contains the results of a study on taxonomic and functional differences between winter and summer zooplankton communities in lakes across a trophic gradient. Thirteen lakes ('Sites.csv') were sampled across a large trophic status gradient for zooplankton abundance, taxonomic and functional community composition, and Carbon/Nitrogen (C/N) stable isotopes in relation to environmental parameters. Zooplankton abundance and taxonomic identification were made for all stations ('Zooplankton_abundance.csv'); nutrients and C/N stable isotopes values in file 'Environmental_parameters'; lakes light conditions in summer and winter are presented in file 'Light.csv'; bulk zooplankton C/N stable isotopes are in 'Zooplankton_sia.csv' file.MN SeaGrant award R/CE-08-16. NSF awards DEB-1136710 and DEB-1754250

The organisational structure of the economic security service of the enterprise and the main functions of its divisions

In order to make science-based decisions related to business security by the owners and management of the enterprise, the following tasks are solved in the article: the organisational structure of the economic security service of the enterprise, as well as the main functions of its divisions, are developed. The relevance of solving these problems is primarily due to the low efficiency of law enforcement agencies in protecting property rights and economic interests of domestic entrepreneurs. The scientific novelty of the study lies in the development of a basic, universal organisational structure of the economic security service of a modern enterprise. Starting from the goal of creating an economic security service, using a systematic and risk-oriented approach, its tasks have been collected, defined and comprehensively analyzed. Taking into account the increased complexity and confidentiality of tasks, based on the structural and functional approach, the functions of the economic security service of the enterprise were formulated, which were structured and distributed to specific departments. Elements of scientific novelty are also the recognition of the existence of intelligence units of the economic security service of enterprises operating in violation of the law, as well as an analysis of their functions in order to develop the organisational structure of counterintelligence units

Ob’shtee zhitie

This feature, "ОБЬЩЕѤ ЖИТИѤ" [Ob'shtee zhitie], provides a list of ongoing projects and recent publications of scholars in the field of Early Slavic studies, arranged alphabetically by the country in which they work. Represented in this issue are reports from Canada, Great Britain, Hungary, the Netherlands, New Zealand, Romania, the Soviet Union, the United States of America, and Yugoslavia.In this feature, scholars have submitted lists of their publications or announced current projects underway. William R. Veder's report (82-84), however, also includes "Notes on an Archaeographic Expedition to Leningrad and Moscow (19 APr - 26 May 1982)." There are interesting editorial comments in a number of the entries and the two institutional reports concern access to the repositories' manuscripts. Regarding the Lenin Library (86): "The 'Literaturnaia gazeta' of 15 Sept 1982 contained a letter to the editors ... voicing serious concern with the effects of work in progress in the new metro-station 'Borovickaia' on the Pashkov House, where the Manuscript department is housed in one of the wings. If the Pashkov house were to suffer damage and need extensive repairs, the consequences for work on the manuscripts would be as serious as the recent 1 1/2 years' closure." The report from the State Historical Museum indicates that it will be closed for extensive renovation for as many as three years (86)

Construction of a three-dimensional image of erythrocytes using an interference microscope

This paper examines the possibility of creating a biometric device for controlling the morphology of erythrocytes, the principle of which is based on the use of an improved method of spectral analysis using illumination with coherent waves to determine the dynamics of light absorption by phase objects, followed by mathematical processing of the obtained images

Comparative analysis of the chemical composition and mechanical properties of duralumin welded joint produced by friction stir welding

Friction stir welding is an advanced method of joining various metals and alloys in the aircraft and mechanical engineering industries. This type of welding is used to join materials that are difficult to weld or not weldable by conventional methods. The high-strength D16 aluminum alloy is difficult to weld by fusion, which is associated with the formation of a dendritic structure in the fusion zone leading to a decrease in the mechanical strength of the joint. In the work, the microstructure and microhardness of a welded seam of the D16 aluminum alloy produced by friction stir welding was studied. Using scanning electron microscopy and optical metallography, the authors identified the presence of three zones: the weld core, the thermomechanical impact zone, and the heat effected zone. In the central part of the welded joint (in the core), a laminated onion ring structure was discovered. A change in the chemical composition of the aluminum solid solution was identified in different areas of the weld zones, as well as the presence of a concentration gradient within each zone. In the upper part of the welded seam, the solid solution is silicon-enriched and depleted in copper. Due to the solid solution depletion in alloying elements, the aluminum content in the solid solution in the zone of the welded joint is higher compared to the initial state. The microhardness values in different areas of the welded joint correlate with changes in the chemical composition. In the welded joint zone, a significant decrease in microhardness was found compared to the initial state, and a change in microhardness associated with the chemical composition gradient within each zone was also observed

Data Analysis of Random Blood Measurements for Abnormal Condition Detection

This paper discusses an approach of the abnormal condition detection of whole blood using piezo-synthetic effects in blood under dynamic external pressure. Three groups of samples having verified chemical and biological conditions were analysed to prove reliable detection: saline, whole blood and whole blood with colorectal cancer as an example of abnormal conditions. The procedure of a discrete differentiation process for obtained experimental data has been proposed as preliminary processing. Three information parameters have been selected to describe experimental data. Fischer F-statistics were used to determine the information content of the proposed information parameters. It has been proved that the proposed information parameters react on changing state of object under test and therefore can be effectively used for the abnormal condition detection

Mathematical Modelling of the Multifactorial Influence of Striking Fragments on the Dynamics of the Rehabilitation Processes of theWounded

Acces full text - https://doi.org/10.1007/978-3-031-42782-4_18The article analyses the possibility of solving an important scientific and technical problem that is relevant for the security and defence of any country where natural and man-made disasters, military conflicts and other emergencies occur, in which penetrating injuries of people occur. The article reports on the possibility of improving the efficiency of the rehabilitation technology for patients with penetrating gunshot wounds by reducing the rehabilitation period using modern methods of medical diagnostics, mathematical modelling and statistical methods for processing biomedical information. The scientific idea underlying the conducted research is that dynamic changes of a set of biomedical indicators depend not only on the time of their observation, but also on the levels of those physical factors that characterize physical parameters: temperature and dynamics of fragments. As a working hypothesis, in this case, it is possible to consider the inverse task, in which it is possible to solve the problem of assessing the levels of physical factors characterizing fragments using measurements of biomedical indicators during the initial examination of the wounded. In the paper, the authors substantiated the possibility of using primary biomedical measurements to assess the physical characteristics of fragments. This, in turn, makes it possible to take into account the characteristics of the physical impact of fragments on the dynamics of changes over time in biomedical indicators characterizing the treatment, and will lead to a reduction in rehabilitation time

The Great Lakes Winter Grab: Limnological data from a multi-institutional winter sampling campaign on the Laurentian Great Lakes

Interest in winter limnology is growing rapidly, but progress is hindered by a shortage of standardized multivariate datasets on winter conditions. Addressing the winter data gap will enhance our understanding of winter ecosystem function and of lake response to environmental change. Here, we describe a dataset generated by a multi-institutional winter sampling campaign across all five Laurentian Great Lakes and some of their connecting waters (the Great Lakes Winter Grab). The objective of Winter Grab was to characterize mid-winter limnological conditions in the Great Lakes using standard sample collection and analysis methods. Nineteen research groups sampled 49 locations varying widely in depth and trophic status, collecting a range of limnological data. This dataset includes physical, chemical, and biological measurements. These data can be used to examine diverse aspects of Great Lakes ecosystems or integrated with winter observations from other lakes to improve understanding of winter limnology across different aquatic systems

DEVELOPMENT OF A DEVICE FOR GENERATION OF LOW CONCENTRATIONS OF VAPORS

The article is devoted to the problem of dilution of the concentration of saturated vapors of various substances. The principle of operation of the device and its technical features are described

СИНТЕЗ ИНФОРМАЦИОННОЙ МОДЕЛИ ПРОЦЕДУРЫ АЛЬТЕРНАТИВНОЙ ФУНКЦИОНАЛЬНОЙ ДИАГНОСТИКИ

Probabilistic approaches in information theory and information theory of measurement, allowing to calculate and analyze the amount expected to models measuring conversions and encoding tasks random measurement signals were considered. A probabilistic model of diagnostic information model transformation and diagnostic procedures was developed. Conditions for obtaining the maximum amount of diagnostic information were found out.Рассмотрены вероятностные подходы в теории информации и информационной теории измерений, позволяющие рассчитывать и анализировать количество ожидаемой информации для моделей измерительных преобразований и задач кодирования случайных измерительных сигналов. Разработаны вероятностная модель диагностического преобразования и информационная модель процедуры диагностики. Определены условия получения максимального количества диагностической информации