bluuebunny/crossref_metadata_2025 huggingface dataset:
Well-posedness of the Cauchy problem for system of oscillators on 2D–lattice in weighted $l^2$-spaces
Authors: Bak S.M. , Kovtonyuk G. M.
Published: December 2021

We consider an infinite system of ordinary differential equations that describes the dynamics of an infinite system of

linearly coupled nonlinear oscillators on a two dimensional integer-valued lattice. It is assumed that each oscillator

interacts linearly with its four nearest neighbors and the oscillators are at the rest at infinity. We study the initial value problem (the Cauchy problem) for such system. This system naturally can be considered as an operator-differential equation

in the Hilbert, or even Banach, spaces of sequences. We note that $l^2$ is the simplest choice of such spaces. With this choice of the configuration space, the phase space is $l^2\times l^2$, and the equation can be written in the Hamiltonian form with the Hamiltonian $H$. Recall that from a physical point of view the Hamiltonian represents the full energy of the system, i.e., the sum of kinetic and potential energy. Note that the Hamiltonian $H$ is a conserved quantity, i.e., for any solution of equation the Hamiltonian is constant. For this space, there are some results on the global solvability of the corresponding Cauchy problem. In the present paper, results on the $l^2$-well-posedness are extended to weighted $l^2$-spaces $l^2_\Theta$. We suppose that the weight $\Theta$ satisfies some regularity assumption.

Under some assumptions for nonlinearity and coefficients of the equation, we prove that every solution of the Cauchy problem from $C^2\left((-T, T); l^2)$ belongs to $C^2\left((-T, T); l^2_\Theta\right)$.

And we obtain the results on existence of a unique global solutions of the Cauchy problem for system of oscillators on a two-dimensional lattice in a wide class of weighted $l^2$-spaces. These results can be applied to discrete sine-Gordon type equations and discrete Klein-Gordon type equations on a two-dimensional lattice. In particular, the Cauchy problems for these equations are globally well-posed in every weighted $l^2$-space with a regular weight.
Optimal recovery of operator sequences
Authors: Babenko V. F. , Parfinovych N. V. , Skorokhodov D. S.
Published: December 2021

In this paper we solve two problems of optimal recovery based on information given with an error. First is the problem of optimal recovery of the class $W^T_q = \{(t_1h_1,t_2h_2,\ldots)\,\colon \,\|h\|_{\ell_q}\le 1\}$, where $1\le q < \infty$ and $t_1\ge t_2\ge \ldots \ge 0$ are given, in the space $\ell_q$. Information available about a sequence $x\in W^T_q$ is provided either (i) by an element $y\in\mathbb{R}^n$, $n\in\mathbb{N}$, whose distance to the first $n$ coordinates $\left(x_1,\ldots,x_n\right)$ of $x$ in the space $\ell_r^n$, $0 < r \le \infty$, does not exceed given $\varepsilon\ge 0$, or (ii) by a sequence $y\in\ell_\infty$ whose distance to $x$ in the space $\ell_r$ does not exceed $\varepsilon$. We show that the optimal method of recovery in this problem is either operator $\Phi^*_m$ with some $m\in\mathbb{Z}_+$ ($m\le n$ in case $y\in\ell^n_r$), where

\smallskip\centerline{$\displaystyle \Phi^*_m(y) = \Big\{y_1\left(1 - \frac{t_{m+1}^q}{t_{1}^q}\Big),\ldots,y_m\Big(1 - \frac{t_{m+1}^q}{t_{m}^q}\Big),0,\ldots\right\},\quad y\in\mathbb{R}^n\text{ or } y\in\ell_\infty,$}

\smallskip\noior convex combination $(1-\lambda) \Phi^*_{m+1} + \lambda\Phi^*_{m}$.

The second one is the problem of optimal recovery of the scalar product operator acting on the Cartesian product $W^{T,S}_{p,q}$ of classes $W^T_p$ and $W^S_q$, where $1 < p,q < \infty$, $\frac{1}{p} + \frac{1}{q} = 1$ and $s_1\ge s_2\ge \ldots \ge 0$ are given. Information available about elements $x\in W^T_p$ and $y\in W^S_q$ is provided by elements $z,w\in \mathbb{R}^n$ such that the distance between vectors $\left(x_1y_1, x_2y_2,\ldots,x_ny_n\right)$ and $\left(z_1w_1,\ldots,z_nw_n\right)$ in the space $\ell_r^n$ does not exceed $\varepsilon$. We show that the optimal method of recovery is delivered either by operator $\Psi^*_m$ with some $m\in\{0,1,\ldots,n\}$, where

\smallskip\centerline{$\displaystyle \Psi^*_m = \sum_{k=1}^m z_kw_k\Big(1 - \frac{t_{m+1}s_{m+1}}{t_ks_k}\Big),\quad z,w\in\mathbb{R}^n,$}

\smallskip\noior by convex combination $(1-\lambda)\Psi^*_{m+1} + \lambda\Psi^*_{m}$.

As an application of our results we consider the problem of optimal recovery of classes in Hilbert spaces by the Fourier coefficients of its elements known with an error measured in the space $\ell_p$ with $p > 2$.
Features of braking of multi-axle vehicles depending on the layout of their axles
Authors: Bogomolov Viktor , Klimenko Valeriy , Leontiev Dmytro , Frolov Andrii , Suhomlyn Oleksandr , Kuripka Oleksandr
Published: December 2021

Problem. For an hour, in the scientific-methodical recommendations of the ship-experts, it is installed in the scientific-technical literature of the day-to-day parameters of galvanizing of vantage, bug-capable transport equipment, so that it is inaccurate to introduce autotransport equipment for the eastern part to inaccurate zasob_v unique road transport suit. Goal. The value of the function of galvanizing large transport bridges on the basis of the coordinates of the position to the center of the heavy transport, realizable values, which are realized between the tires and the supporting surface, as well as the support for the rear axle of the transport bridges. Methodology. The approaches adopted in the work to solve this goal are based on the theoretical foundations of braking multi-axle vehicles, the scientific provisions of elastic deformations of pneumatic tires of automobile wheels, geometric and weight parameters of a wheeled vehicle. Results. The equations that allow to calculate the value of the braking coefficient of multi-axle vehicles based on the coordinates of the position of the center of gravity, the realized couplings between the tires and the bearing surface, as well as the load distribution between the respective front and rear axles of the vehicle. Rivnyannya is assigned, which allow the positioning of the coordinates to the center of the car of a multi-axle wheeled transport vehicle for both front and rear axles. The calculation schemes of the position of the coordinates of the center of mass for two-axle, three-axle and four-axle with different axle layout are presented in graphical form, which give a general idea of the mass distribution between the front and rear axles of the vehicle. Originality. Presented in a graphical view of the layout of the positioning of the coordinates to the center of the car for a two-axle, three-axle and one axle with a small layout of the bridges, which give a far-reaching display of the space between the front and rear axles of the transport vehicle. Practical value. The results can be recommended by the experts-auto technicians in the development of technical capabilities for the drivers of vantage transport means, uniqueness of the road-transport usability.
Research of the modernized intake system of the gasoline engine
Authors: Magats Myron , Goshko Zenoviy , Vagula Yuriy , Uzhva Anatolii
Published: December 2021

Problem. In recent years, Ukraine has seen a sharp decline in ambient temperature, especially in the winter. Accordingly, this has a negative impact on the performance of car engines (difficult to start and prolonged warm-up), as the lion's share of private sector cars are parked in open areas and are subject to sudden temperature and humidity changes. Therefore, to partially solve this problem, our attention was focused on the air lines of the intake system of the gasoline engine, as this system is easily accessible and does not require significant design changes for its modernization. Goal. The purpose of the work is to ensure the ease of starting the gasoline engine and reduce the time to warm up. Methodology. Operation of the car in the conditions of the lowered temperatures, essentially promotes deterioration of its fuel economy. The basis of such a negative process of fuel consumption is incomplete combustion of the working mixture. And this is the deterioration of spraying and evaporation of fuel and increasing the duration of engine warm-up. At such low ambient temperatures, the effective operation of the car in a garage depends significantly on the method of its preparation (which should at a minimum cost of fuel and energy resources to ensure rapid and reliable engine start and accelerated warm-up). We decided to obtain thermal energy to heat the inlet air at no additional cost. This is the installation of a gasoline engine with a spark ignition of the incandescent coil in the intake air line, which will receive power from the battery. Such modernization of the system does not require major design changes and significant financial investments Unresolved issues remain to assess the effectiveness of the process of heating the air entering the combustion chamber of the engine to create a working mixture. It should be noted that the optimal heating of the engines is most appropriate to carry out (ie heating the coolant and oil in the engine lubrication system) not to the temperature of the operating thermal mode, but to the temperature that ensures its reliable start. Results. The scheme of connection of a heater of intake air in an onboard electric network of the car is presented. The results of the heat balance of the studied gasoline engine (using cold and heated air flow) during its heating are obtained. The optimum temperature of the warmed-up engine at which further economical operation of the car is possible is established. Originality. This spiral heater was first used to heat the intake air charge during the start-up and warm-up of a gasoline engine. Practical value. The developed heating equipment can be used for both gasoline and diesel internal combustion engines. It should be switched on only during engine start-up and warm-up.
Improvement evaluation methodology of vehicle load and energy efficiency
Authors: Podrigalo Mikhail , Abramov Dmytro , Tarasov Yurii , Kholodov Mykhailo , Kaydalov Ruslan , Podrigalo Nadiya , Shein Vitaly
Published: December 2021

Problem. There was a need to expand the well-known concept of vehicle operational properties – fuel efficiency arose in connection with the advent of new alternative power plants (electric motors, flywheel engines, hybrid power plants, etc.), which requires the inclusion of not only the thermal energy of the fuel, but also other types of energy (electrical and mechanical). In the paper the research of choice and justification of the vehicle energy efficiency indicators by assessing the energy costs of the engine for its movement was made. The analysis of the relationship between energy characteristics of dynamics and vehicle efficiency was made. Goal. The aim of the study is to analyze methods for assessing the vehicle energy efficiency. To achieve this goal, it is necessary to determine indicators that will allow a comparative analysis of energy efficiency indicators of various vehicles. Methodology. The approaches taken in the work to solve this goal are based on substantiating the indicators of the energy efficiency of the car by assessing the energy consumption of the engine for its movement. Results. In our opinion, in projecting and evaluating the dynamic properties of vehicles, it is rational to use the energy indicators of the vehicle, for which it is necessary to develop appropriate assessment criteria. Analysis of the results of indicators calculation and, in table 1, has shown that the indicator in comparison with has less dispersion. Originality. The obtained results of the influence of the parameters of vehicles on the level of their energy load shows that the indicator has less dispersion than. In addition, the value does not correlate with the year of manufacture of the vehicle, which allows the use of this indicator at the design stage of vehicles. It is only necessary to set the rational normative value of this indicator. Practical value. The results obtained can be recommended to specialists for use in the design, production, certification and operation of automotive vehicles, vehicle energy efficiency, combined power plant.
ANALYSIS OF THE STRESS-STRAIN STATE OF AN ASYNCHRONOUS MOTOR WITH A SHORT-CIRCUITED ROTOR UNDER AXIAL LOADS
Authors: Kolesnik Maksim , Ivanov Sergey
Published: December 2021

A comparative description of the most popular and professional 3D modeling packages using the finite element method in solving problems is given. The choice of using the SolidWorks Simulation package at this stage of research is justified. Its main advantages are given. A 3D model of a real functioning asynchronous motor has been designed and modified to perform linear displacement operations. A static analysis of the strength of an asynchronous motor with linear displacement of the actuator using the plug-in module SolidWorks Simulation was performed. A direct analysis of the obtained result of the stress-strain state of the engine is carried out. Conclusions are drawn about its suitability to work with axial loads. The main directions of subsequent research of asynchronous motors with a short-circuited rotor under axial loads are determined.
REALIZATION OF THE RIGID CHARACTERISTICS OF ROLLING RAIL GUIDES OF MACHINE EQUIPMENT
Authors: Lebedev Vladimir
Published: December 2021

A simplified method of accounting and regulation of the stiffness characteristics of rolling rail guides of machine tools in volumetric finite element models is considered.
TECHNIQUE FOR EXTRACTION OF ELECTRIC FREQUENCY PARAMETERS OF CONDUCTIVE INK
Authors: Trufanova Natal'ya , Artischev Sergey
Published: December 2021

This article discusses a method for extracting parameters that allow you to calculate the nodes taking into account the properties of the material used in the technology of printing on a printer. As a result of the extraction of the parameters, the real parameters of the material were revealed.
COGNITIVE SYSTEMS FUNCTIONING DYNAMICS MODEL
Authors: Ancyferov Sergey , Fazilova Kseniya
Published: December 2021

Monitoring of the functioning of the control system for the calibration of nanometry reference measures is carried out on the basis of a previously developed methodology, which includes the construction of the phase space of the system functioning, the construction of acceptable boundaries of the functioning area, and the determination of the current state of the system.
NEURAL NETWORK INFORMATION-MEASURING SYSTEM IN TASKS OF RESOURCE PREDICTION
Authors: Dubyago Marina , Poluyanovich Nikolay
Published: December 2021

It was established that methods based on artificial neural networks (HC) find the most widespread in predicting thermal processes in power cable networks. Analysis of influence of various functions of HC activation on forecast error of thermoflux processes in power cable networks was carried out. It is established that the minimum error of thermal processes prediction in power cable networks is HC with function of logsig activation in hidden layer and pureline in output layer.
UPGRADING OF IM VIEW SOFTWARE FOR RESEARCH OF THERMAL VENTILATION MODES OF INDUCTION MOTORS
Authors: Tret'yakov Artem
Published: December 2021

The basic information about "IM View" software, necessary hardware for its correct operation is given. The main directions of further development of the program are outlined.
CAR AUTOSTART REMOTE CONTROL SYSTEM ON THE ARDUINO PLATFORM
Authors: Holkin Anton , Gaptullazyanova Gul'shat
Published: December 2021

This article describes a remote car auto-start system based on the Arduino platform using a ULN2003A (DIP) chip, several SRD-12VDC-SL-C relays, DC-DC converters 2-5A, diodes, resistors and capacitors. The principles of the system are explained in detail, the assembly diagram is given, as well as the basic fragments of the program code. Also the ways of possible modification of the project are given.
GENERAL METHODOLOGY OF EVALUATION AND SELECTION OF COMPONENTS OF AUTOMATED SYSTEMS
Authors: Ohunov Dilshod , Ohunov Mamatzhon
Published: December 2021

The features of modern control systems are: the multifunctional nature of production; the multi-connectivity of processes and tasks of automated systems; the need to ensure interaction with systems of different levels and the same level, etc. The article discusses the methodology of evaluation and selection of components of automated systems.
MATHEMATICAL MODELING OF THE MECHANICAL CHARACTERISTICS OF ELECTRIC MOTORS WITH A PHASE ROTOR UNDER STABLE MOTION OF MECHANISMS OF LIFTING AND TRANSPORTATION MACHINES
Authors: Goncharov Kirill
Published: December 2021

A method of mathematical synthesis of the equations of the mechanical characteristics of an electric motor with a phase rotor, corresponding to various resistance steps in the rotor circuit and approximated by straight lines, when simulating the unsteady movement of the mechanisms of hoisting-and-transport machines, is presented.
STUDY OF ANIMAL CONTROL SYSTEM IN A VETERINARY CLINIC USING THE ARDUINO PLATFORM
Authors: Safina Dilyara , Zaripov Artur , Gaptullazyanova Gul'shat
Published: December 2021

A study of a software package for monitoring the state of animals has been carried out. An algorithm for the operation of the system for monitoring the state of animals has been compiled. special attention is paid to the way the modules interact with the Arduino platform.
SIMULATION AND MATHEMATICAL MODELING OF AUTOMOBILE TRAFFIC BY MEANS OF ANYLOGIC AND STATISTICA
Authors: Holkin Anton , Pavlov Aleksandr
Published: December 2021

This article describes a simulation model of a road section in the city of Kazan, created using the AnyLogic simulation modeling system. The process of creating a simulation model, optimization by AnyLogic SIM tools is described, a mathematical model of the flow of cars is constructed based on the results of a simulation experiment using the STATISTICA 10 software package.
DEVELOPMENT OF BEHAVIORAL MODEL FOR SWITCHING VOLTAGE REGULATOR MICROCIRCUIT 1290EF1
Authors: Shkolin Aleksey
Published: December 2021

The issue of developing a behavioral model of pulse voltage converter IC is considered on the example of a microcircuit of domestic production 1290EF1. In order to verify the adequacy of the model, taking into account its frequency characteristics, recommendations and basic requirements are given when performing a full-scale and numerical experiment to determine the frequency characteristics of such type of nonlinear dynamic objects.
USING OF EXPERIENCE IN THE DEVELOPMENT OF RADAR CAD IN THE DEVELOPMENT OF ALGORITHMS FOR ADAPTING OVER-THE-HORIZON RADARS TO THE IONOSPHERIC ENVIRONMENT
Authors: Schiryy Andrey
Published: December 2021

The possibility of using the experience and developments gained during the creation of the radar CAD to the tasks of developing algorithms for adapting over-the-horizon radars to the ionospheric environment is discussed. Special attention is paid to the experience of complex radar simulation.
MATHEMATICAL MODELS OF COATING PROPERTIES UNDER DIFFERENT TECHNOLOGICAL MODES OF PEO
Authors: Aubakirova Veta , Mukaeva Guzel , Farrahov Ruzil' , Butorin Akim , Parfenov Evgeny
Published: December 2021

The issue of mathematical modeling of the coating thickness, current and corrosion potential depending on the type of pulsed electrical processing mode, pulse frequency and processing duration is considered.
NON-LINEAR OSCILLATORS IN DISCRETE TIME: ANALYSIS AND SYNTHESIS OF DYNAMIC SYSTEMS
Authors: Zaycev Valeriy , Kasim Alalvan
Published: December 2021

A physically justified method of synthesis of nonlinear oscillating systems oscillating in discrete time (DT) is proposed. Synthesized dynamic systems are used as nonlinear discrete (digital) filters and basic models of radio system elements.
MATHEMATICAL MODELS OF HOMOGENEOUS ELEMENTS MAX, MIN BASED ON TWO-DIGIT LOGIC FUNCTIONS
Authors: Andreev Dmitriy , Dorodnov Artem , Lyubeckiy Danil
Published: December 2021

Examples of using two-digit logical functions to describe basic operations of multi-valued logic are discussed.
MODELING OF RADIO TRANSMITTER AMPLIFIERS IN MATLAB CAD
Authors: Antonenko Nikita , Merkutov Aleksandr
Published: December 2021

A review of modeling tools for radio transmitter amplifiers in Matlab CAD, as well as their capabilities and limitations, is given.
SIMULATION OF MULTI-LEVEL VOLTAGE SOURCE INVERTER FREQUENCY CONVERTER
Authors: Barabanov Denis , Pugachev Aleksandr
Published: December 2021

Simulation of induction motor electric drive with multi-level voltage source inverter frequency converter are carried out, the comparative simulation results are presented and discussed, the recommendations on further investigations are highlighted.
DEVELOPMENT OF RANGE FINDER BASED ON ULTRASONIC DISTANCE SENSOR HC-SR04
Authors: Klyamerov Konstantin , Lysenkov Andrey , Amelin Sergey
Published: December 2021

The article considers the development of a range meter to an object in centimeters based on an ultrasonic distance sensor HC-SR04.
DEVELOPMENT AND SIMULATION OF OPERATION OF TWO-STROKE HALF-BRIDGE CONVERTER IN DIFFERENT MODES
Authors: Klyamerov Konstantin , Lysenkov Andrey , Amelin Sergey
Published: December 2021

The article considers the development of a two-stroke half-bridge converter and modeling its operation in various modes.
DESIGNING A DIGITAL HIGH-PASS FILTER USING THE CAD ISE DESIGN SUITE
Authors: Klyamerov Konstantin , Lysenkov Andrey , Amelin Sergey
Published: December 2021

The main features of the "ISE DESIGN SUITE" design environment are considered, using the example of developing a digital high-pass filter using additional software.
THE ROLE OF THE MATLAB/SIMULINK PACKAGE IN DIPLOMA DESIGN
Authors: Kurir Valeriy
Published: December 2021

An overview of works devoted to the problems of design and numerical modeling of the power supply system of aircraft − aircraft PSS in the Matlab / Simulink package, carried out by Russian and foreign researchers, is given.
BUILDING A CONTINUOUS MODEL OF A FORWARD CONVERTER
Authors: Polischuk Nikolay , Yurchenkov Andrey , Drozdetsky Sergey  Vladimirovich
Published: December 2021

In this article, formulas for constructing a continuous model of a forward converter are obtained, a continuous model is built and an example of its use is given.
SIMULATION OF SWITCHING SUPPLY POWER OF INCREASED POWER FOR LIGHT EMITTING DIODES CONTROL
Authors: Suraykin Aleksandr , Kudryashov Andrey , Labutin Maksim , Suraykin Aleksey
Published: December 2021

The article provides results of computer simulation of switching power supply of increased power on base designed of imitation block-diagram of IC PWM-controller for light emitting diodes. Represented results of computer design at CAD TINA-TI.
STUDY OF INTERACTION OF SUPER HIGH FREQUENCY WAVES WITH GRAIN
Authors: Usmanova Khulkar , Turgunbaev Asadulla
Published: December 2021

The paper considers the interaction of ultrahigh-frequency waves with moist grains, in which the moisture information is represented as a function of two variables: the attenuation and phase shift of the electromagnetic wave. Wet material is represented as consisting of three flat layers: water, dry matter and air. Based on uncomplicated calculations, the conversion functions are derived and the influence of moisture, temperature and density coupling forms on the error of moisture conversion is studied.
Investigation of the Relationship Between the Two-Dimensional Self-Esteem Perceptions and Leadership Orientations of the Faculty of Sports Sciences Students
Authors:   The University of Bayburt, Turkey, Karatas Ismail , Akyuz Hayri
Published: December 2021

This research was carried out to investigate of the relationship between the two-dimensional self-esteem perceptions and leadership orientations of the students of the faculty of sports sciences. In this context, the relational survey model, which is consistent with the main purpose of the study, was used in this quantitative study. A total of 323 students, 125 females and 198 males at the Faculty of Sports Sciences of Bartın University constitute the sample of the research. Convenience sampling method, one of the non-probabilistic sampling approaches, was used in the selection of the research group. Questionnaire form was used as data collection tool and this form consisted of three parts. The first part includes the “Personal Information Form,” the second part includes the “Two-Dimensional Self-Esteem: Self-Liking/Self-Competence Scale” and the third part includes the “Multidimensional Leadership Orientations Scale.” The descriptive statistics of the raw data obtained through the questionnaire form were first calculated by considering the data type. Then, the reliability of the scales related to the obtained data were investigated, and the difference and correlation tests were used in the statistical evaluation. In this direction, it has been determined that there are significant correlations within the scope of age and family income level variables. However, there was no significant relationship within the scope of personal income level variable. On the other hand, it was found that there are significant differences in the scope of department and actively doing sports variables. However, it was observed that there were no significant differences in the scope of gender, grade, and place of residence variables. On the other hand, it was determined that there were positive and moderately significant correlations between the participants’ scores of self-liking and political leadership, human resources leadership, charismatic leadership and structural leadership. In addition, it was found that there were positive and moderately significant correlations between the self-competence scores of the participants and the scores of political leadership, charismatic leadership and structural leadership. On the other hand, it was understood that there was a statistically significant positive and low-level correlation between the participants' self-competence scores and their human resources leadership scores. As a result, it can be said that as the self-esteem of the participants increases, their leadership orientation also increases. In this context, it can be said that increasing the self-esteem of the participants is an important concept in the context of leadership orientations.
The Wellness Program for Physical Fitness and Decreasing Metabolic Syndrome Risk Factors
Authors:   Poltekkes Kemenkes Denpasar, Indonesia, Juniarsana I Wayan , Sukraniti Desak Putu
Published: December 2021

Indonesia is currently facing a double burden of disease. The high rate of communicable diseases has been followed by high rates of non-communicable diseases (NCD) such as hypertension, heart disease, cancer and diabetes mellitus. This study aims to produce a holistic approach model in the form of a Wellness Program in an effort to improve physical fitness and decrease of metabolic syndrome for civil servants. This study was designed with an experimental design. Subjects were members of civil servants in Klungkung Regency, Indonesia who have one or more of syndrome metabolic risk. Subjects were divided into two groups, namely the treatment group and the control group. The treatment group is a group that is given a wellness program model in the form of physical exercise according to the rules of frequency, intensity and duration, balanced nutrition education and smoking behavior control. The results show a significant increase in nutritional knowledge (p<0.05), the implementation of physical activity rules with a frequency of 3-5 x/week in 78%, duration 20-60 minutes in 76% of light-moderate exercise, decreased smoking habit significantly p=0.042 (p<0.05), increased physical fitness with VO2max value 29.28 + 7.68 (treatment group) vs 24.28 + 5.91 (control group) with p<0, 05, decreasing of blood sugar was 118.08 + 35.81 mg/dl (treatment group ) vs. 124 + 42.22 mg/dl with p value = 0.001 (p <0.05) with t- independent test. Meanwhile, the risk factor variables for the metabolic syndrome (obesity, cholesterol and blood pressure) showed a decrease but were not significantly different.
Edible Film Production from Effluents of Potato Industry Incorporated with Origanum onites Volatile Oils and Changes Its Textural Behaviors under High Hydrostatic Pressure
Authors: AKDEMİR EVRENDİLEK Gülsün , BULUT Nurullah , UZUNER Sibel
Published: December 2021

Development and characterization of edible film incorporated with Origanum onites volatile oil from the effluents of potato industry, determination of changes on its textural properties of force and elongation at break (EAB) under high hydrostatic pressure (HHP) in addition to its antimicrobial effect against Escherichia coli O157:H7 and Salmonella Enteritis were prompted. The optimum operational conditions under HHP for maximum force and EAB were achieved with 350 MPa pressure, 8 min operational time, and addition of 45 μL O. onites volatile oil concentration (VOC). Inhibition zones for S. Enteritis and E. coli O157:H7 at the optimum conditions were 1.7 ± 0.109 and 2.386 ± 0.07 cm, respectively. Textural properties of force and EAB of the HHP-processed films ranged from 2.27 ± 0.52 to 5.23 ± 0.79 N, and from 7.47 ± 1.68 to 15.71 ± 0.65 mm, respectively. Thermal transition of the edible film was observed at 86.77°C for 7.19 min. The microscopic observation of the film surfaces shoowed homogenous and translucent structure. The improved textural properties with HHP and VOC revealed that it carries a potential to be used as a food packaging material.
Sampling and sub-sampling of granular waste: size of a representative sample in terms of number of particles
Authors: Hennebert Pierre , Beggio Giovanni
Published: December 2021

This paper elucidates the theoretical principles behind the calculation of the size of a representative sample of granular solid waste. The key concept is the number of particles that must be present in a sub-portion of matter to be representative of a larger portion of matter. This depends on the fraction of particles in the waste batch showing the properties of interest, which shall be measured. A representative sample must include a fraction of particles of interest reliably similar to that of the waste batch to be characterized, with a controlled variability. In this context, it is demonstrated that the number of particles of interest that must be collected in a representative sample is 100. From this requirement, the mass of a representative sample can be calculated based on the knowledge of the frequency of particles of interest of the waste lot to be characterized.
Data on particles concentrations in different samples of WEEE plastic scraps exemplifies how the presence in the sample of enough rare particles showing the property of interest is key to ensure reliable measurements. Further, the assumptions made on the controlled degree of variability to determine the minimum number of particles are discussed based on data on achievable intra- and inter-laboratory variability of analytical standards for waste characterization. Accordingly, the mass of laboratory samples and test portions recommended in published sampling plans or analytical standards are assessed for the occurring number of particles.
HAZARDOUS PROPERTIES OF BROMINATED, PHOSPHORUS, CHLORINATED, NITROGEN AND MINERAL FLAME RETARDANTS IN PLASTICS WHICH MAY HINDER THEIR RECYCLING
Authors: Hennebert Pierre
Published: December 2021

Flame retardants are numerous and some of them are (re)classified with time as hazardous for the man and the environment. A list of 69 flame retardants used in EU was set from three sources and their chemical properties were searched in their registration dossier at ECHA. Substance self-classifications (hazard statement assignment by the registrant) frequently indicate no hazard or data not available, while for the same substances a re-evaluation by ECHA is underway as persistent, bioaccumulative, toxic or endocrine disruptor. When the substance has hazard statement(s), the concentration that triggers the classification of a plastic as hazardous when it is a waste can be compared to the functional concentration, when available. Registration dossiers should be completed for the many “non-available” information. Of these 69 substances, 12 (= 17%) are used at concentrations greater than those making plastic waste hazardous and 13 (= 19%) are under re-evaluation by ECHA. These 12 or 13 substances should not become “legacy” substances which hinder the recycling of plastics. The sorting (mainly by density) and management options of these flame-retarded plastics are discussed. The technical concentration limit of 2000 mg total Br/kg for sorting should not be modified as it includes all organobromine substances currently reassessed by ECHA. A two-step sorting process is necessary to avoid the loss of non-hazardous dense plastics.
ASSESSMENT OF THE DEGREE AND SOURCE OF POLYOLEFIN RECYCLATES CONTAMINATION
Authors: Alassali Ayah , Calmano Wolfgang , Kuchta Kerstin
Published: December 2021

This study has the aim of analysing the degree of contamination of recycled polyolefin purchased from the market by focusing on the content of polycyclic aromatic hydrocarbons (PAHs). Additionally, the impact of the mechanical recycling process on the polyolefin chemical quality was investigated. Results indicated that recycled polyethylene (PE) had higher PAHs concentrations by 10 to 20 folds in comparison to the pristine PE. Similarly, recycled polypropylene (PP) indicated higher PAHs concentrations in comparison to the virgin polypropylene, yet with lower degree of difference. Analysing the 8 indicators assigned by the Regulation EU 1272/2013 amending REACH Annex XVII, all recycled specimens showed concentrations lower than the limit of 0.5 mg kg-1, which indicates that there is no restriction in material’s utilisation. This study functioned as a preliminary assessment to check the suitability of recycled plastics for their further utilisation. Additionally, the study indicates that polyolefin can experience quality deterioration when uncontrolled recycling conditions are applied.
COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 7. STRAINED STATE AND STRENGTHENING OF BLANKET DURING RESTRICTED EXTRUSION. PART 1
Authors:   Bauman Moscow State Technical University, Vorontsov A. L. , Karpov S. M. ,   Bauman Moscow State Technical University
Published: December 2021

The solution beginning of the determination problem of the strained state of a blanket during restricted extrusion of П-shaped brackets under the conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The formulae were obtained, which allow one to determine current coordinates of material points and cumulative strain in the area of plastic strain situated under the extruded thick wall for any specific value of the working stroke of a punch.
COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 6. KINEMATIC AND STRESSED STATES OF BLANKET DURING RESTRICTED EXTRUSION. PART 2
Authors:   Bauman Moscow State Technical University, Vorontsov A. L. , Karpov S. M. ,   Bauman Moscow State Technical University
Published: December 2021

On the basis of the complete equation system of the plastic flow theory, the solution continuation of the determination problem of the kinematic and stressed states of a blanket during restricted extrusion of П-shaped brackets under conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The determination of flow velocities and stresses in the area of plastic deformation, located under the punch end near the formed thick wall of the bracket has been carried out. The formulae were obtained, which are required for identification of the main parameters of the extrusion process of П-shaped products with a relatively thin horizontal bridge.
CALCULATION PROCEDURE FOR CHAIN-TYPE ANTI-SLIDING DEVICE WITH CUT-PLATE
Authors:   Bryansk State Engineering and Technological University, Zaikin A.N. , Sivakov V.V. ,   Bryansk State Engineering and Technological University, Polonik D.A. ,   Bryansk State Engineering and Technological University
Published: December 2021

The coefficient of grip of wheels to the road surface is one of the main factors affecting road safety. Various auxiliary means for increasing the cross-country ability with varying degrees of success are used to increase it. One of the preferred options for increasing the cross-country ability of vehicles can be automatic snow chains. A calculation procedure for a chain-type anti-sliding device with a cut-plate is presented.
Chemically-modified polysulfones and their properties
Authors:   Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), Storozhuk I. P. , Alekseev V. M. ,   Bauman Moscow State Technical University (National Research University), Kalinnikov A. N. ,   Bauman Moscow State Technical University (National Research University), Borodulin A. S. ,   Bauman Moscow State Technical University (National Research University)
Published: December 2021

The review of works including works by the authors, concerning aromatic polysulfones chemically-modified on the main macrochain is presented. Methods of synthesis of copolymers and block-copolymers with increased heat-resistance by the use of new original compounds are described. Application availability of the modified polysulfones for production of heat-resistant filled composite materials is demonstrated.
Médano Santa Clara medio siglo después (partido de Salliqueló, Campo de Dunas del Centro Pampeano): nuevas perspectivas de análisis del conjunto lítico
Authors: Santos Valero Florencia , Messineo Pablo Gerónimo
Published: December 2021

El siguiente artículo presenta el análisis tecnomorfológico de la colección lítica del sitio Médano Santa Clara, visitado en la década de 1970 por Guillermo Madrazo. La importancia de volver a estudiar este conjunto radica en que se trata de un sitio ubicado en el sector sudoccidental del Campo de Dunas del Centro Pampeano y a distancias variables de las principales fuentes de aprovisionamiento lítico. A partir de la información contextual y de las características del registro, se planteó que el sitio fue ocupado durante el Holoceno tardío y en el contacto Hispano-Indígena. Los nuevos datos indican una explotación mayoritaria de ftanita y ortocuarcita, procedentes de las Sierras de Tandilia, seguidas por rocas del monte xerófilo de la subregión Pampa Seca (chert y calcedonia) y Ventania (metacuarcita y riolita). Los modos de aprovisionamiento y los métodos y técnicas de talla empleados variaron con relación a las materias primas mayoritarias y minoritarias. Los resultados sugieren el aprovechamiento óptimo de las rocas, las cuales debieron ser trasladadas desde largas distancias. Por último, la representación de las rocas en el sitio contrasta con otros contextos del área indicando un uso diferencial de las materias primas hacia el sector oeste.
Restos humanos: derroteros de objetivación en el cementerio San Vicente
Authors: Sánchez Ana
Published: December 2021

En este trabajo, expongo un aspecto particular de la investigación que realicé en el Cementerio San Vicente (Córdoba) durante los años 2018-2020: el análisis de la porosidad entre los tratos “propios” e “impropios” de los restos humanos, allí. A partir de un evento puntual, la denuncia que recibió la necrópolis en el año 2016 por el trato comercial en que son involucrados algunos restos, el articulo aborda etnográficamente los sentidos y representaciónes que se crean en torno a ellos, desde la perspectiva de los empleados de la necrópolis. Los que es considerado como tratos “propios” e “impropios” sobre los restos humanos adquiere diferentes sentidos para los distintos colectivos que los manipulan. Así es como en primer lugar, parto de los testimonios de los empleados para adentrarme en su labor cotidiana y comprender las formas que adquiere la materia compleja con la que trabajan, deteniéndome en los motivos de sus afirmaciónes de que el cementerio es una tierra de nadie, un cementerio de pobres. Más adelante, complejizo el análisis, reflexionando sobre una publicación de un grupo de Facebook de estudiantes de medicina, en donde se desmarcan otros tratos “propios” e “impropios” sobre los cuerpos. Así las irregularidades denunciadas en la necrópolis aparecen como una situación emergente, que revela un escenario más complejo de concepciones, relaciones y contextos, siguiendo una línea inninterrumpida que lleva del reducido círculo de los empleados del cementerio al ámbito del conjunto de la sociedad y sus valores hegemónicos.
Cuarenta años de cultura: historiografía de las políticas patrimoniales en el partido de Olavarría (1983-2020)
Authors: Cantar Nahir Meline
Published: December 2021

La salvaguardia del patrimonio cultural esta fuertemente condicionada por la implementación y continuidad, o discontinuidad, de las políticas culturales que los gobiernos aplican sobre los bienes. Si bien en Argentina existen instituciones y un marco normativo nacional para la protección del patrimonio cultural, así como organismos y regulaciones provinciales específicas para cada jurisdicción, en la provincia de Buenos Aires el destino de gran parte de los bienes del patrimonio está fuertemente condicionado por las políticas aplicadas a nivel local.Bajo esta premisa en el presente trabajo se busca reconstruir las políticas culturales, en general, y patrimoniales, en particular, aplicadas en el Partido de Olavarría desde el retorno de la democracia hasta el año 2020. A partir de este ejercicio, se analiza el impacto que las mismas han tenido sobre los diferentes bienes culturales del partido a lo largo del tiempo. Para ello, se recurre a los métodos de análisis documental y entrevistas en profundidad a informantes clave.El análisis desarrollado demuestra el impacto del compromiso de los dirigentes políticos y de la continuidad en la implementación de políticas culturales en la salvaguardia del patrimonio cultural.
Las narrativas de madres y bailarinas en el circuito profesional del tango danza en Buenos Aires
Authors: Verdenelli Juliana
Published: December 2021

Este artículo indaga acerca de la política narrativa (Ortner, 2006) que participa en la construcción de agencia de las bailarinas de tango que desean conciliar su profesión con su maternidad. A partir del análisis de las composiciones musicales de tango de las primeras dos décadas del siglo veinte y de la exploración del registro fílmico Un tango más (2015), el estudio se pregunta por los modos en que estas historias se nutren de la política cultural de la diferencia y la desigualdad de género y por cómo participan en la organización experiencias y la construcción de representaciones, sentidos e imaginarios sobre la madre y la bailarina en el circuito profesional del tango danza en Buenos Aires. En base a los datos relevados durante un trabajo de campo etnográfico realizado entre 2013 y 2020 –en el que se siguió a bailarinas profesionales que también son madres–, se concluye que las narrativas asociadas a las figuras de la madre y la milonguita del tango continúan operando en las subjetividades de muchas artistas y entran en tensión de diferentes maneras –y en diversos grados– en sus prácticas cotidianas. Estas tensiones generan, por momentos, sentimientos de profunda incompatibilidad entre la maternidad y el tango.
Por qué la religión no es nada especial, pero es central
Authors: Bloch Maurice , Visacovsky Sergio
Published: December 2021

En este trabajo propongo que explicar la religión en términos evolutivos es una empresa engañosa, porque la religión es una parte indisoluble de un aspecto único de la organización social humana. La investigación teórica y empírica debería centrarse en lo que diferencia la socialidad humana de la de otros primates, es decir, el hecho de que los miembros de la sociedad a menudo actúan entre sí en términos de roles y grupos esencializados. Estos tienen una existencia fenomenológica que no se basa en un monitoreo empírico cotidiano, sino en estados y comunidades imaginarias, como clanes o naciones. La base neurológica de este tipo de relaciones sociales, que incluye la religión, dependerá, por tanto, del desarrollo de la imaginación. Se sugiere que tal desarrollo de la imaginación ocurrió aproximadamente en la época de la “revolución” del Paleolítico Superior.
El colonialismo portugués y los usos de la antropología en Mozambique
Authors: Ortíz Juan Emilio
Published: December 2021

El presente trabajo estudia los usos de la antropología durante la ocupación portuguesa de Mozambique. Allí podrán analizarse los excesos a los que condujo una antropología esencialista heredera del racismo moderno, pero también podrá verse un uso de la misma que permitió cuestionar esta situación y habilitar nuevas miradas y procesos. El análisis se propone señalar las bases de un método que evite el uso idealista de los saberes y sea capaz de favorecer torsiones minúsculas pero imprescindibles en los dispositivos de gobierno. Más allá de la perspectiva histórica del trabajo, el mismo constituye un estudio de caso metodológico que puede orientar la intervención de otros profesionales de la antropología y de las ciencias sociales abocados (y muchas veces convocados por diversos organismos) a estudiar las problemáticas de nuestro presente.
Índice Social e de Saúde: uma análise para o Norte de Minas Gerais
Authors: Melo Diana Stefany dos Santos , Santos Maria Alice Ferreira dos , Santos Maria Ivanilde Pereira
Published: December 2021

O objetivo do trabalho foi a construção de um Índice Social e de Saúde (ISS) para avaliar a qualidade da saúde da população dos municípios do Norte de Minas Gerais. Para tanto, o estudo apresentou uma breve discussão sobre a regionalização/hierarquização da oferta de serviços de saúde, tendo como referência o processo de regionalização da saúde; e, abordou ainda o conceito e a caracterização dos principais indicadores de saúde, sociais e econômicos do Norte de Minas Gerais. Para a estimação do ISS, utilizou-se a análise fatorial, com base em nove indicadores socioeconômicos e de saúde. Pelos resultados, constatou-se que o Norte de Minas Gerais apresentou um valor médio baixo para o ISS (18,29%), demonstrando que a região ainda possui muitos desafios relacionados à saúde, para que uma saúde de qualidade seja fornecida de forma ampla e igualitária a toda população.
The relationship between parenting style and social development among toddlers in Yogyakarta
Authors: Rofita Desi , Ismail Djauhar , Hakimi Mohammad
Published: December 2021

Background: The development of children at preschool age is mentioned as the "Golden Period." At this time, the development of creativity, social awareness, emotional, and intelligence goes swiftly, therefore the parenting provided by parents from an early age will affect the future child's developmentPurpose: the major aim of the study was to know the relationship between parenting style and social development among toddlers in YogyakartaMethods: The design of this research was observational analytic with a cross-sectional design. The subjects of this study were mothers who have children aged 4-6 years, the sample used was 50 respondents. Data were analyzed using the chi-square test. An instrument using VSMS (Vineland Social Maturity Scale).Results: The results of the statistical test revealed that authoritarian parenting risked the children's social development by 5.5 times compared to authoritarian parenting, while permissive parenting risked children's social development by 7,5 times compared to authoritarian parenting. There is a significant relationship between parenting and social development of children with the value of CI 95% = 1.298-41.420 (p = 0.02). While the mothers' age does not have a significant relationship with the children's social development (p-value = 0.07), as well as the mothers' employment status does not have a significant relationship with the child's social development (p-value = 0.13).Conclusion: This study shows that there is a significant relationship between parenting and the social development of children, however, there is no significant relationship between age and mothers' employment status on children's social development. Â Authoritarian Â Â parenting is the most effective parenting approach to children's social development compared to authoritarian and permissive parenting.