Analysis of Technical and Tactical Preparedness of High Qualification Judoists results of the «OG-2020»

Given the current state of development of Pedagogical Technologies and Sports Science, today it is important to conduct Analytical and Statistical work in the direction of Technical and Tactical training of wrestlers, in particular – highly qualified Judokas, which will ensure their quality preparation for competitions of higher ranks. In addition, it will help increase the prestige of Ukrainian sports and the image of Ukraine in the international arena. The Main Purpose of the Research is to analyze the Technical and Tactical arsenal of highly qualified Judokas – participants of the "XXXII Summer Olympic Games 2020, Tokyo" (male). In the process of Research and Analytical work, the following Research methods were used: abstraction, measurement, expert evaluation, survey, comparison, observation, etc. As a result of theoretical research, members of the research group analyzed the technical and tactical arsenal of highly qualified Judokas – participants of the "XXXII Summer Olympic Games 2020, Tokyo" (male). Prospects for further Research in the chosen area of Scientific Research include an analysis of the Technical and Tactical arsenal of highly qualified female Judokas – participants in the "XXXII Summer Olympic Games 2020, Tokyo".

SCN5A p.R965C in Brugada Syndrome: Effect of Nanomolecular Change

This study is based on an analysis of drinking water at Koya city, Kurdistan-Iraq. Since the source of tap water comes either from Dokan Lake or from groundwater resources. Therefore, ten samples from houses tab water of Koya city and ten samples from well-known brands of bottled water were collected. Concentrations of the metals in such water samples were analyzed by X-ray fluorescence and compared with WHO water quality standards for minerals. The experimental results show that most elements detected in this study were within the guidelines given by WHO for drinking water, while four elements of Ca, Al, Mg, and Cr were identified as risky elements in developing diseases since their level exceed the WHO standard levels. Positive relationships between risky elements and some serious diseases were discussed. Statistical work shows that elements; Ca, Al, and Cr have a high risk while Mg has a low risk.

Comparative analysis of classifications of public procurement

Relevance of the research topic. The article is devoted to theoretical and practical aspects of classification of public procurement in Ukraine. Formulation of the problem. The development of a scientifically sound classification of procurement, which would provide a combination of theory and practice of public procurement, allowed for a more accurate assessment of the effectiveness of the use of budget funds. Analysis of recent research and publications. The article provides an overview of current publications on public procurement management, as well as scientific approaches to the classification of public procurement. Selection of unexplored parts of the general problem. The author emphasizes the insufficiency of domestic works on the classification of public procurement, taking into account the latest changes in the legislation of our state. The purpose of the article is to analyze the classification criteria of public procurement, as well as to find ways to improve the classification of public procurement. Research methods: dialectical, analysis and synthesis, empirical, statistical. Work results and conclusions. The article considers the theoretical and practical principles of classification of public procurement, analyzes scientific approaches to the classification of public procurement, identifies the main criteria for the classification of procurement, improved the classification of public procurement. Field of application of results. The obtained results can be used primarily in procurement procedures, as well as in improving the economic policy of the state. Novelty: The proposed classification of public procurement, which corresponds to the modern stage of the formation of the sphere of public procurement, reproduces the structure and organization of procurement activities in Ukraine.

Fluctuations and growth in Ragnar Frisch’s rocking horse model

Ragnar Frisch's famous "rocking horse" model has been the object of much praise and even controversy since its publication in 1933. This paper offers a new simulation of the model to show that there exists cyclical trajectories in the propagation mechanism. By building an analytical solution taking the same form as Frisch's original solution, we can provide new insights into the ideas encapsulated in his model, in particular the fact that the author constructed a model combining cycles and growth. The exploration of Frisch's formal construction of the model leads us to link his statistical work on the decomposition of time series with his economic insights on investment cycles, which both led to the 1933 model. We contrast Frisch’s approach to that of other econometricians who used similar equations, showing that their different mathematical solutions were the product of what they wanted to show with their models.

Statistical Support of the Leadership of the Country During the Great Patriotic War

The article covers some of the results of the study on the management and activities of the national statistical bodies during the Great Patriotic War. The authors analyzed several historiographic issues connected to the research area and related to more or less major publications on the history of the national state statistics. It is argued that there is an extreme shortage of scientific publications on archival materials about the activities of the CSB under the State Planning Committee of the USSR and its territorial bodies in 1941–1945. The specifics of managing statistical work activities during the war period are shown to provide country leaders with the necessary statistical information, primarily for operational management decisions in extreme conditions. The process of transforming the content of basic statistical work and statistical methodology to wartime realities. In this context, organizational and substantive aspects of urgent censuses (resources and production capacity) are relevant. The article formulates conclusions and proposals for further study and generalization of experience with the operation of the national state statistics in extreme conditions.

PROPERTIES OF THE INVERSE OF A NONCENTRAL WISHART MATRIX

The inverse of a noncentral Wishart matrix occurs in a variety of contexts in multivariate statistical work, including instrumental variable (IV) regression, but there has been very little work on its properties. In this paper, we first provide an expression for the expectation of the inverse of a noncentral Wishart matrix, and then go on to do the same for a number of scalar-valued functions of the inverse. The main result is obtained by exploiting simple but powerful group-equivariance properties of the expectation map involved. Subsequent results exploit the consequences of other invariance properties.

Potentials and Limitations of “Input-Output” Analysis (To the 60th Anniversary of Statistical Work in the Field of Intersectoral Research in the CIS Countries)

The article reveals the possibilities of using the Russian system of input-output tables and intersectoral models for analytical and forecasting purposes and substantiate managerial decisions in the fild of economic policy. It is shown how the input-output method’s capabilities were implemented at three stages of the development of intersectoral research in Russia, taking into account the specifis of the problems being solved and the development of the statistical base. The primary attention authors paid to the current stage of developing the method and its use directions. A characteristic is given of the constraints objectively inherent in this method and the input-output tables’ information system (IOT). The authors’ position regarding their signifiance is expressed. A new direction in using data from the IOT system is considered — the analysis of the fial product’s cost as accumulated value-added, which implies a full use of the analytical potential of modern input-output tables. Proposals are given for improving the intersectoral toolkit based on taking into account the links between production, the need for investment and the state of the production and technical base.

ORGANIZATION AND ACTIVITY OF THE URAL STATISTICAL COMMITTEE IN THE LATE 19-TH - EARLY 20-TH CENTURIES

The post-reform period in the Russian Empire laid down new principles for the organization and functioning of regional statistical services. Since the second half of the 19th century, the demand for statistical data had increased significantly. De jure and de facto, the Ural Statistical Committee dates back to 1896. Beginning in 1900, all military statistics were transferred to the committee. In connection with the increased load on the committee from the military capital, the regional statistical center was allocated an allowance of 1,500 rubles, and the total budget was 4,000 rubles. All the activities of the committee are represented by the implementation of mandatory statistical work and the socio-cultural study of the region. In 1901, the Ural Committee developed and introduced agricultural cards for collecting information about the industry under study and the systematic formation of data. In 1910, the committee conducted a survey of the property and occupations of the population. The Ural Statistical Committee paid special attention to “optional” works, most of which were devoted to the life and occupations of the population.

The Problem of Scaling in Exponential Random Graph Models

This study shows that residual variation can cause problems related to scaling in exponential random graph models (ERGM). Residual variation is likely to exist when there are unmeasured variables in a model—even those uncorrelated with other predictors—or when the logistic form of the model is inappropriate. As a consequence, coefficients cannot be interpreted as effect sizes or compared between models and homophily coefficients, as well as other interaction coefficients, cannot be interpreted as substantive effects in most ERGM applications. We conduct a series of simulations considering the substantive impact of these issues, revealing that realistic levels of residual variation can have large consequences for ERGM inference. A flexible methodological framework is introduced to overcome these problems. Formal tests of mediation and moderation are also proposed. These methods are applied to revisit the relationship between selective mixing and triadic closure in a large AddHealth school friendship network. Extensions to other classes of statistical work models are discussed.