OVERVIEW OF THE BEST 2020 AXIAL-FLOW FAN DATA AND INCLUSION IN SIMILARITY CHARTS FOR THE SEARCH OF THE BEST DESIGN

The paper deals with the aerodynamic performance of ducted axial-flow fans available in the 2020 market and aims to create a general picture of the best designs and design trends, as a tool for fan designers. To this end, the paper first presents the general formulation of the similarity approach to the fan performance analysis, including the effects of rotational speed (which affects the validity of the Reynolds similarity) and turbomachine size (which can hinder the perfect geometrical similarity of some shape details). The second part reports a statistical survey of the axial-flow fan performance based on data from catalogues of major manufacturers, and compares the resulting Cordier-lines with optimum fan designs from empirical or CFD-based models available in the literature. In addition to the global performance at maximum aeraulic and total-to-static efficiencies, this survey uses the form of dimensionless Balje-Cordier charts to identify the trends and values of other design parameters, such as hub-to-tip ratio, blade count, and blade positioning angle. As a result, a summary of the aerodynamic performance of year 2020 best designs, the improvements achieved during the last forty years, and the present design trends in contra-rotating, vane-axial, and tube-axial fan types are made available to fan designers.

Penthemimeral Elision in Tragic Trimeters

This paper provides a statistical survey of the incidence of elision at the penthemimeral caesura in the iambic trimeters of Greek tragedy. It updates and builds on the work of Descroix (1931) by considering the rates of elision of different types of words: lexicals, nonlexical polysyllables, and nonlexical monosyllables. While all tragedians elide less at the caesura than throughout the line, in Aeschylus the rate of this reduction is far greater for lexicals and polysyllabic nonlexicals than it is for monosyllabic nonlexicals. On this evidence, and the evidence of interlinear elision, it is tentatively suggested that lexicals and nonlexical polysyllables should together be considered as the more constrained elisions. When the rates of constrained elision are examined, the difference between Aeschylus and later Euripides is revealed to be twice that obtained when bulk figures are used. This difference is attributed to a combination of Euripides’ adoption of more fluent phrasing towards the end of his career and the tragedians’ different approaches to compositional constraints.

Early Detection of Substance Abuse and Prevention of Mental Deviations Among Minor Students

Background: the reduction in the premature mortality as a result of non-contagious diseases by way of the improvement measures to be adopted with the purpose of prevention and treatment of the substance abuse and general health care activities were outlined by the United Nations Organization as the primary objectives as far back as 2015 in order to work towards sustainable development (the objective № 3 “Promotion of healthy lifestyle and furtherance of wellbeing of individuals of all ages” in 2030 perspective). There is a high risks for the Russian Federation of transnational drugs expansion developing [1]. Concurrently, in order to build a national dependence prevention system, Decree № 581н as of 06.10.2014 “On the Preventive Medical Screening to be made at educational establishments” was issued by the Ministry of Health of the Russian Federation. Purpose: the research was supposed to focus on Preventive Medical Screening as a measure of prevention of illegal usage of substances and mental disorders among minor students and on the optimization of such preventive medical screening. Materials and methods: the fi ndings are based on the posthoc analysis of the data of the Federal statistical survey form and of the research and information reports (n = 491 280 students). The results: the fi ndings of the preventive medical screening made across the Russian Federation and in Moscow over the years 2016–2018 show the increase of minor students involved into such preventive medical screening, as well as the decrease of those who might use psychoactive drugs. The same fi ndings show that the majority of the illegal drug users were students of secondary vocational schools. The fi ndings can be called a trend across the Russian Federation and in Moscow. Conclusions: non-medical usage of substances among minor students can be a serious threat to the mental health of the youth. There are suggestions for improvement prevention of mental disorders among students at the results of the research. These include methodology of Brief Motivational Consulting at a time of preventive medical screening and the ways of increase effectivity toxicology screening in different educational organizations offering to add in preventive medical screening cotinine (it’s metabolite of nicotine) screening for students of primary school; it’s have to systematically update and expand types of screening tools for substances in preventive medical screening in all educations organizations.

Free from Numbers? The Politics of Qualitative Sociology in the U.S. Since 1945

In a world that is said to be more and more filled with quantities, this paper focuses on the practices and reasons of people refusing quantities; people who want to purify their world from numbers. It uses the history of qualitative sociology as an example and shows how actors refused the quantitative for political or ethical reasons. But they opposed only a certain set of qualitative methods—especially the statistical survey—, which they associated with certain political “demons” (the State, the Army, Bureaucracy), but not the quantitative in general. On the contrary, even qualitative sociologists who opposed surveys did make room for other ways of using numbers, which are very different, often very original and surprising (including social studies of data, data gleanings, conceptual canvasing).

Silver Nanoparticles in Various New Applications

The use of silver in antimicrobial management is very ancient. Silver-based materials have proven interesting, practical, and promising for various applications. Silver nanoparticles (AgNPs) have been one of the nanostructures most studied and investigated over the past several years. AgNPs have greater specific properties depending on their size and form. These noble synthesised metrics have numerous optical, electrical, catalytic, and optical characteristics. These properties are ideal for many fields, depending on their size and shape. The outbreak of multiple infectious diseases has been a major strain on global economies and the public health sector. Extensive treatments have been suggested for disease control in environments containing infectious diseases through advanced disinfectant nanomaterials. This chapter investigates the application and mechanism of silver nanoparticles in certain nanobiotechnology sectors as a useful nanomaterial. In the sense of the market statistical survey research, AgNPs are emerging as one of the fastest developing product groups in the nanotechnology industry, providing a wide variety of nanosilver products in various applications. Lastly, due to the massive use of AgNPs in products recently, there are many concerns about AgNPs toxicity and safety had also been discussed.

Analysis of monetary income of the population: time challenge

The article presents a theoretical and practical view of the income category; the concept of a household is considered. The analysis of the composition and structure of the monetary income of Russians in the whole country in the period from 2015 to 2019 is carried out and the regional aspect is presented: Nizhny Novgorod region population’s monetary income for this period is analyzed. On the basis of a comparative analysis of all-Russian trends in the composition and structure of population’s monetary income and the situation in the region, the current state of monetary income certain types individuals and the economic behavior of Russians is characterized. The author uses the methodology of the statistical survey of the population of Rosstat in the analysis of each Russians monetary income component; points out its disadvantages. The analysis of the composition and various components structure of Russians monetary income allows us to place emphasis on the sources of population’s monetary income in a market economy. The author highlights the income from entrepreneurial activity and emphasizes their importance in the market economy; considers the entrepreneurial activity of Russians in dynamics. The article provides a detailed analysis of the income from property indicator of the population of the country and in the Nizhny Novgorod region and justifies the most significant source of additional funds for the population at present. A critical assessment of the revealed dynamics of each population's monetary income component and the possibility of strengthening state structures control over the income and expenses of individuals is given.

Academic entrepreneurship -The applicability of doctoral and doctoral theses from Campos dos Goytacazes -RJ in the entrepreneurial market

Knowledge combined with innovation has been shown to be a driving factor for the growth and development of sustainable economic markets and, given the reality of the current scenario in Brazil in relation to social, political and economic aspects, see the high rate of unemployment and informal workers that they need emergency governmental support to survive, the importance of cooperative union between academic centers, scientific society, government and private initiative to induce public and institutional policy strategies that cause scientific, technological and social advances, transforming the knowledge in market innovations that generate jobs and income for social actors. In this scenario, stricto sensu postgraduate courses, especially doctorates, have contributed to the advancement of Innovation, Science and Technology, considered to be driversof economic and social change. Thus, assuming that all theses created in university centers precede an intellectual innovation, this research aims to highlight the reasons that lead to low entrepreneurial applicability among doctoral and doctoral student research. The hypothesis raised is that the lack of disciplines interconnected to entrepreneurship in graduate studies creates an imprisonment of Brazilian scientists' ideas in the academic field without other ramifications. The methodological procedures used will be of a qualitative quantitative approach, with regard to the objectives, the research is presented as descriptive and exploratory, having as a procedure bibliographic studies and the creation and application of a questionnaire for doctors and doctoral students in the city of Campos dos Goytacazes-RJ. As a result of this research, I hoped to understand the reasons that lead to the low applicability and insertion of academic ideas in local entrepreneurship and the statistical survey of alternatives for interconnection between researchers and the market.

A Study on Cause Analysis of Digital Divide among Older People in Korea

Most people in modern society enjoy various benefits due to the development of information and communication technology and smart technology in modern society. However, due to the digital divide, there is a social class that cannot enjoy abundant benefits. The representative class is the class of older people. In the latest four-year national report on the status of the digital divide, the class with largest digital divide among various information disadvantaged groups, such as the disabled, the low-income class, farmers and fishermen, and older people, is the class of older people. In this study, the causes of the digital divide among older people in Korea are analyzed from various perspectives. To this end, various statistical analyses have been conducted based on national statistical survey works over the past four years. The digital informatization level, which is an index used to measure the digital divide, can be classified into three main components: information access, information capability, and information utilization. Among the three components, the information capability is found to be the lowest. Information capability can also be divided into three components for PCs and mobile devices: installation, use, and management. Among them, management capability was found to be the lowest. Based on this analysis, various plans to reduce the digital divide among older people were proposed.

Electric Vehicles Charging Management for Real-Time Pricing Considering the Preferences of Individual Vehicles

The paper proposes a real-time model for electric vehicles (EVs) controlled load charging. The proposed demand-side management (DSM) of EVs is implemented based on queuing analysis with a nonhomogeneous arrival rate and charging service periods dataset. An electric vehicle model is used which is based on a statistical survey to represent the uncontrolled demand of the EVs. A probability distribution for the time at which EVs are plugged and the corresponding value of the state of charges (SOCs) are considered. The preferences of individual EVs have been fully exploited through a set of instructions to fulfill the needs of the vehicles’ owners. The designated preferences include the owner setting for both, charging price preferences (OPR), and the maximum estimated parking time duration (EPTD). The quasi-static time-series (QSTS) simulation is used to simulate real-time scenarios of the 24-h simulation period. The IEEE 123 nodes radial test feeder is analyzed with different daily load curves, EV charging scenarios, and wind power penetrations. The results show the effectiveness of the proposed DSM in avoiding excessive levels of charging with/without penetration of non-dispatchable wind power generation. The proposed DSM enables the EVs to charge with low tariff rates either at excessive renewable power generation or late evening hours with available committed bulk power plants and light loading conditions.