bluuebunny/crossref_metadata_2025 huggingface dataset:
Топос „Одессаˮ в романе Сергея Ануфриева и Павла Пепперштейна „Мифогенная любовь кастˮ
Authors: Musiy Walentyna
Published: March 2021

The article deals with the reflection in the literature of the process of mythologizing the image of Odessa. The author understands the myth as a symbolic designation of objects, historical events, objects of the external world, belonging to the space of psychic reality. The purpose of the mythologizing as the process is the expression of a generalized idea of something or someone, as well as giving to events, persons, objects with a universal sense . The subject of the article is the novel of modern writers S. Anufriev and Pepperstein“Mythogenic love of castes”. Both writers are the organizers of the Medical Hermeneutics group and refer themselves to younger conceptualists. Such postmodern writers pay special attention to various senses that are traditionally attached to phrases, attitudes, concepts. In the novel by Anufriev and Pepperstein, the reader includes to the space of a fabulous, psychic (virtual) and historical reality. The novel refers to the events of the Second World War, it’s hero takes part in key battles with the Nazis. However, fabulous heroes help him to defeat. And the reader sees these events as they are perceived by a participant in the war of the early 1940s and at the same time – by a modern person living at the end of the twentieth century. Theimage of Odessa is created in the twenty-first chapter of the novel. It names the real historical persons (Badayev, Yasha Gordienko). These heroes take part in fictional events along with fictional characters. The article considers such signatures of Odessa: Deribasovskaya street, Opera House, Archaeological Museum, the sea, sea port. The article contains words that relate to the “Odessa” language and their meanings. Special attention is paid to Odessa songs (folklore and author’s). At the same time, attention is drawn to the lack of historical accuracy in a number of images and details. Odessa in the novel by Anufriev and Pepperstein is both a real city and a city that has turned into a myth.
Ciudad Juárez. Una reflexión sobre la influencia de la actividad económica en la infraestructura, el espacio público, la inseguridad y el desarrollo urbano de las ciudades.
Authors: Moreno Toledano Leonardo Andrés , Moreno González Ariadna Deyanira
Published: March 2021

El presente ensayo plantea una reflexión sobre como la manera en que se desarrollaron las diversas actividades económicas en la Ciudad Fronteriza, Ciudad Juárez, en Chihuahua, influyó en la infraestructura, la inseguridad y la mala planeación de espacios públicos de la ciudad. Asimismo, expone como esto afecta a sus habitantes, en especial a las mujeres y otros grupos vulnerables y plantea la urgencia de nuevos acercamientos para buscar soluciones que mejoren la calidad de vida de quienes la habitan y hacen uso de los espacios urbanos.
Propuesta de instrumento para medir identidad a partir del mobiliario urbano
Authors: Paredes de la Rosa Beatriz , Sosa Compeán Liliana Beatriz
Published: March 2021

La identidad urbana es un tema recurrente dentro del diseño urbano ya que define la vinculación de un grupo humano con su entorno y el nivel de arraigo presente en un barrio o ciudad.  Un espacio público donde las inserciones que se diseñen, el mobiliario urbano en este caso, contribuyan entonces a fomentar ese sentido de pertenencia sería entonces la máxima en el diseño urbano. Pero ¿Cómo se debería diseñar mobiliario para este fin? ¿Qué factores intervienen en el proceso de diseño del mobiliario urbano que genere identidad? ¿Cuáles deberían ser las estrategias a seguir? ¿Cómo podría saber si un elemento urbano fomenta identidad? Por estas y otras interrogantes se creyó necesario crear un instrumento que ayude a medir el grado de pertenencia y por ende a identificar interacciones significativas en las relaciones sujeto objeto. Todo lo antes mencionado se estudia bajo un enfoque holístico donde el pensamiento sistémico ayude a minimizar las visiones reduccionistas.
Constructing a suitable platform for public health: Radio propaganda, instruction, and “The case of Elisa Cedillo”
Authors: Robles Sonia
Published: March 2021

The Mexican government communicated public health information in the early 20th century during radio programs dedicated to women. Turning to a platform committed to instruction and cultural programming, it publicized health education bulletins, which were sandwiched between weather reports and on-air cooking classes. These daily reports offered practical advice and information on proper hygiene and diseases, which gave the government credibility to dispel misinformation campaigns when necessary. The frequency of the broadcasts, moreover, was a reminder that health was an important aspect of everyday life.
Distance based topological descriptors for two classes of graphs
Authors: PATTABIRAMAN K.
Published: March 2021

In this paper, the exact formula for the generalized product degree distance, reciprocal product degree distance and product degree distance of
Mycielskian graph and its complement are obtained. In addition, we compute the above indices for non-commuting graph.
The Bernstein operators on any finite interval revisited
Authors: BARBOSU DAN
Published: March 2021

One studies simultaneous approximation properties of fundamental Bernstein polynomials involved in the construction of the mentioned operators.
Relative (p,q)-φ order and relative (p,q)-φ type based on some growth properties of composite p-adic entire functions
Authors: Tanmay Biswas
Published: March 2021

Let K be a complete ultrametric algebraically closed field and A (K) be the K-algebra of entire functions on K. For any p adic entire functions
f ∈ A (K) and r > 0, we denote by |f| (r) the number sup {|f (x) | : |x| = r} where |·| (r) is a multiplicative norm on A (K) . In this paper we
study some growth properties of composite p-adic entire functions on the basis of their relative (p, q)-ϕ order, relative (p, q)-ϕ type and relative
(p, q)-ϕ weak type where p, q are any two positive integers and ϕ (r) : [0, +∞) → (0, +∞) is a non-decreasing unbounded function of r.
Approximation by complex Chlodowsky-Szasz-Durrmeyer operators in compact disks
Authors: IZGI AYDIN , SERENBAY SEVILAY KIRCI
Published: March 2021

This paper presents a study on the approximation properties of the operators constructed by the composition of
Chlodowsky operators and Szasz-Durrmeyer operators. We give the approximation properties and obtain a Voronovskaya-type result for these operators for analytic functions of exponential growth on compact disks. Furthermore, a numerical example with an illustrative graphic is given to compare for the error estimates
of the operators.
Solving a system of integral equations by using some tripled fixed point theorems
Authors: LAURAN MONICA , POP ADINA
Published: March 2021

A tripled fixed point theorems in ordered metric spaces is used in order to prove the existence and uniqueness of a solution for a class of integral equations. The conditions of the theorem are much weaker than those existing in literature and the theorem is useful for solving some general problems. An example to illustrate our theoretical results is also given.
Some generalized definitions of uniform continuity for real valued functions
Authors: NURAY FATIH , DUNDAR ERDINC¸ , ULUSU UGUR
Published: March 2021

The purpose of this study is to give some uniform continuity definitions for real valued functions.
Generalized semi-open sets via ideals in topological space
Authors: SEN RITU
Published: March 2021

In this paper we have introduced a new type of sets termed as µˆ-open sets which unifies semiopen sets and discussed some of its properties. We
have also introduced another type of weak open sets termed as Iµˆ
-open sets depending on a GT as well as an ideal on a topological space. Finally
the concept of weakly Iτˆ
-open sets are investigated.
Othering Time: Strategies of attunement to non-human temporalities
Authors: Smits Alice
Published: March 2021

In her article 'Othering Time: Strategies of Attunement to Non-Human Temporalities,' art curator and researcher in the field of art and ecology Alice Smits delves into artistic practices that tune into deep time and non-human time zones. Starting from the viewpoint that our current
ecological crisis is in need of developing an ethics of care towards generations far into the future and life forms extremely different to ours, she discusses art and aesthetic knowledge as particularly well suited for experimentation with new stories and sensibilities about our place in time.
Making use of geologist Marcia Bjornerud's concept of 'timefulness,' the article focuses on several art projects by Rachel Sussman, Katie Paterson and Špela Petrič, whose works engage in developing a more time-literate sensibility that aims to understand how our everyday lives
are shaped by processes that vastly predate us. Underlining changing ways of understanding of time and space by opening up to what is referred to in the title as 'othering time,' art opens up as a discourse in its own right that can interrogate the sciences as a specific epistemological framework
that is in need of revision. The author concludes with a few references to how these artistic practices change her own curatorial practice.
Time in the Work of Frank Lloyd Wright
Authors: Sturkenboom Frans
Published: March 2021

This paper contains a first exploration of the question of time in the work of the American architect Frank Lloyd Wright.11 By way of introduction I will start by going back to the treatise of the Roman architect Vitruvius to find a first formulation of the importance of time in architecture
in the form of the Latin tempus, meaning time of the day and time of the season. I will then expand on the entanglement of the concepts of templum and tempus, both related to the founding rites of the antique city. Finally, I will make the jump to modernity to see how
these concepts still persist in the work of Wright, ending up in the Janus face of a geological and an atmospheric time of architecture.
Soundings of Ecological Time in Contemporary Music and Sound Art
Authors: Christenhusz Joep
Published: March 2021

In The Natural Contract, Michel Serres asks how humanity can ever address the 'anguishing question' of climate change as long as we don't know how to conceive of the relations between time and weather; temps et temps. This essay aims to find ways in which, through
music and sound art, we may be able to attune to temporalities that are less anthropocentric and more ecologically minded. In this investigative essay I will take a closer listen to four works that touch upon this theme of more-than-human time: Jennifer Walshe's Time Time Time (2019),
Jem Finer's Longplayer (1999), Felix Hess' Air Pressure Fluctuations (2001) and John Luther Adams's The Place Where You Go to Listen (2004-2006). I aim to enquire how these works offer representations and sonifications of ecological notions of time through sound. Drawing
on Elaine Gan's essay The Time Travelers, as well as the vast time-scales of Timothy Morton's hyperobject and Michel Serres's ideas on nonlinear, percolating time, I will further frame the notion of ecological time. To explore the correlated question of how the sonic experience manages
to render these more-than-human temporalities tangible, I will turn to sound studies by both the American philosopher Christoph Cox and the Swiss sonic theorist Salomé Voegelin.
Composition as Hyperobject
Authors: Molitor Claudia
Published: March 2021

This article considers compositional practice in relation to Timothy Morton's ideas surrounding the hyperobject. The aim is not to analyse compositional practice through the prism of the hyperobject or indeed apply the concept to composition. Rather, I allude to Morton's ideas
as a way to think through some aspects of compositional practice. In particular a move away from compositional conventions, such as 'the work' or the 'singular creator,' which will be discussed in relation to two of my recent projects Auricularis Superior andDecay. Importantly,
this approach understands composition as a practice that deals with the situated peculiarity of the human condition, and in a time when our world is changing dramatically, it too, must consider these changes and respond. In their writings, both Donna Haraway and Timothy Ingold propose a greater
emphasis on our entanglement with the world as the basis of our sense of self, rather than the petrocapitalist idea of the individual self that is improved by consuming. This shift would allow us to respect and treat others and our environment with more respect and care, but also develop a
new understanding of what it is to be a human entity. I propose that compositional practice can be part of this endeavour.
Time Matters* (an introduction): There is no time, right?, left.
Authors: Sonderen Peter
Published: March 2021

This issue of APRIA, Time Matters, was compiled and edited by the ArtEZ Theory in the Arts professorship. All of these reviewed artistic (research) and academic contributions were created and written specially in response to the four-part seminar Time Matters (2019-2020). The
aim of the publication and the seminar is to inquire into the changing concepts of time in the arts and other epistemic fields collectively, and to explore and test alternative – past, present and future-oriented – temporalities.
Justification of the minimum required length of the trajectory of the grain on the surface of the working body for layer-by-layer seed treatment
Authors: Ratushnyy V. V. , Kosovets Yu. V.
Published: March 2021

Annotation
Purpose. Improving the efficiency of pesticide use by substantiating the rational modes of operation of the working bodies of the disinfectant for layer-by-layer treatment of seeds with protective and stimulating preparations.
Methods. The research used an analytical-calculation method with experimental verification.
Results. Conducting laboratory and field studies of a prototype developed experimental sample for layer-by-layer treatment of crop seeds with protective and stimulating preparations, and indicators of the quality of seed treatment are determined depending on the operating modes of the working body.
Conclusions. The minimum required length of the trajectory of the grain on the surface of the working body decreases with increasing film thickness of the working fluid from 0.005 mm to 0.025 mm and increases with increasing grain diameter from 1 mm to 13 mm and is in the range of 10–1035 mm. It is experimentally established that the actual length of the trajectory of the grain on the surface of the working body at an angular velocity from 40 rad/s to 100 rad/s is in the range from 1290 mm to 1450 mm, which exceeds the minimum required length and provides the necessary conditions for quality processing seed.
Keywords: seeds, layer-by-layer processing, protective-stimulating preparations, working body, operating modes.
The results of experimental research and testing of a machine for surface application of mineral fertilizers with inclined centrifugal scattering devices
Authors: Bulgakov V. M. , Adamchuk O. V.
Published: March 2021

Annotation
Purpose. Increase the productivity of solid fertilizer applicators by increasing their working width.
Methods. In the process of experimental research, the basic provisions of GOST 20915-75 “Agricultural machinery. Method for determining test conditions”, GOST 28714-2007 “Machines for applying solid mineral fertilizers. Test methods”. The results were processed using the Microsoft Office Excel 2007 software environment.
Results. Setting the angle of inclination of the axis of the centrifugal working body of the TON within the range of 25–30° makes it possible to have the productivity of the machine-tractor unit for applying mineral fertilizers in 1 hour of the main time at the level of 35–40 ha/hour.
Conclusions
1. The most intensive growth of the working width of the machine capture (84.8%) takes place with an increase in the angle of inclination of the TON disk to the horizontal plane up to 10°. At the same time, the working width of the machine increases from 16.5 m to 30.5 m, that is, 1.85 times. The subsequent increase in the disc installation angle in the horizontal plane to 30° leads to an increase in the working width of the machine by 11.4–14%, that is, by 1.11–1.15 times. An increase in the disc installation angle in the horizontal plane from 30° to 40°, provided that fertilization is applied with an unevenness of up to ±20%, does not lead to an increase in the working width of the machine.
2. The best indicators of fertilization both in terms of the working width and the unevenness of fertilization are ensured when the angle of inclination of the TON disc to the horizontal plane is within 25–30°. Wherein:
• the uneven distribution of fertilizers at the working width is 19.2%;
• the uneven distribution of fertilizers in the direction of movement of the unit is 8.9%;
• deviation of the fertilizer application dose from the established one is 7.5%.
The obtained indicators of the quality of the application of mineral the requirements for the quality of this technological process.
Keywords: mineral fertilizers, application, experimental research, testing, uniformity of distribution, width of capture, productivity.
Method for determining the kinematic parameters of the vertical rotor blades for the destruction of the tuberous layer
Authors: Volsky V. A. V. A. , Bonchik V. S.
Published: March 2021

Annotation
Purpose. Development of a technique for determining the velocities of collision of the blades with the tuberous layer, the trajectory of movement, the magnitude and direction of the velocities of the most characteristic points.
Methods. The research was carried out using the basic provisions of theoretical mechanics, statistics, probability theory, methods of differential calculations, mathematical modeling and applied programming. The studies were carried out on a specially designed laboratory installation using a vertical rotor hydraulic drive and strain gauge equipment mounted on a tractor, as well as a set of variable connecting plates for setting the machine operating modes.
Results. The calculations of the absolute collision velocities of the blades of the lower and upper beaters of the vertical rotor at the start and end points, respectively, are performed. The geometric shape of the working surfaces and the direction of rotation for the extreme points of the outer contours of the blades of the lower and upper beaters of the vertical rotor of the potato harvester are substantiated.
Conclusions. Using the above technique, as well as graphical dependences, we calculated the rational kinematic parameters of the blades of the lower and upper beaters of the vertical rotor, respectively, at the start and end points, where the greatest destruction of the tuber layer. For the lower beater blade, the absolute collision speed at the angle of rotation ωнt = 120° at the starting point = 1.6 m/s, at the end point – = 1.94 m/s. For the upper beater blade, the absolute collision speed at the angle of rotation ωвt = 120° at the starting point = 1.4 m/s, at the end point – = 1.92 m/s.
Therefore, according to the specified rational kinematic parameters of the blades of the lower and upper beaters of the vertical rotor, it is possible to design the geometric shape of the surfaces of the crushing working bodies of potato harvesters.
Keywords: blade, breaking surface, breasts, potatoes.
Dynamic model of closure the liner
Authors: Dmytriv I. V. I. V.
Published: March 2021

Annotation
Purpose. Develop analytical dependences for modeling the speed and dynamics of deformation of liner depending on its design parameters and physical and mechanical characteristics, taking into account the technological parameters of the process.
Methods. Based on the system of geometric equilibrium equations for a cylindrical shell, taking into account the isotropy of the medium and the momentless stress state, the spatial action of forces and pre-tension of the liner, developed analytical equations that allow modeling the dynamics of deformation of liner in time, which allows to determine the time constant of the system “liner – milking cup”.
Results. Analytical dependences of the dynamics of deformation of liner in time in the radial plane and the rate of deformation depending on its design parameters and physical and mechanical characteristics of the material are developed. Parameters for deformation simulation are: R – radius of liner, Е – modulus of elasticity, ρ – the density of the rubber material, h – thickness of liner, рн – vacuum pressure, l – the length of the active part of liner, ν – Poisson's coefficient for rubber, Fн – force of tension of liner. Depending on the central angle in the radial plane of the section, the shape of the deformation of the liner is modeled along its entire working length during the closing and opening stroke.
Conclusions. The obtained dependences allow to model the dynamics of deformation of liner in the radial plane depending on its design parameters and physical and mechanical characteristics of the material. The developed analytical dependences take into account the pre-tension of the liner, vacuum pressure and allows modeling depending on the central angle in the radial plane of the rubber section.
The use of the developed analytical dependences makes it possible to substantiate the main parameters that affect the process of closing and opening of the liner. The characteristic of the deformation in the cross section of the largest deformation is that the tension of the liner does not affect the deformation characteristic. This is due to the isotropy property of the cylindrical shell and the elastic isotropic properties.
Keywords: liner, vacuum pressure, modulus of elasticity, radial deformation, coordinate system, tension of rubber, the cylindrical shell, the isotropic medium.
The method of determining technical resources of mobile agricultural machinery and destination terms of repair and service work
Authors: Vasylenko M. O. , Shapoval L. I.
Published: March 2021

Annotation
Purpose. Optimization terms of repair and maintenance works due to monitoring of the technical condition in mobile agricultural machinery on the basis statistical simulation using of its technical resource.
Methods. System analysis and methods for statistical processing results of operational reliability tractors in experimental farms on NAAS. For the development statistical simulation models, discrete-event simulation, “Any Logic” simulation environment is provided.
Results. The intensity using of mobile agricultural machinery during the year by the amount of fuel consumption is established, which makes it possible to plan the terms and scope of repair and maintenance works during the period of minimum load of equipment. The advantages strategy of adaptive maintenance and repair of agricultural machinery in comparison with the planning and warning system, which consist in determining the periods of repair and maintenance work, taking into account the intensity using mobile equipment and residual resource, which is basis for the development and implementation of operational management plans for its technical. Prerequisites for statistical simulation of the process of using the technical resource of mobile equipment are highlighted; the stages of establishment of its residual resource and appointment of terms of repair and maintenance works are defined.
Conclusions. The economic effect on the results of research will be to monitor the technical state of mobile equipment, minimization of downtime for technical reasons during intense field work and effective use of technical resources maintaining a crop of potential losses by 8–10% due to the timely implementation processes.
Keywords: mobile technology, adaptive repair strategy, initial data, modeling process, modeling algorithm, statistical simulation model, technical condition, residual life, terms of repair works.
The study of deformation of the blade parts of tillage after their electro arc
Authors: Vаsylenko M. O. , Kаlinin O. Ye.
Published: March 2021

Annotation
Purpose. Establishment of the relationship between the deformation of the blade parts of tillage and design parameters after electro arc.
Methods. Planning an experiment, mathematical statistics and analytical processing of experimental data.
Results. The dependences of the deformation of the blade parts of tillage equipment on the design parameters after their recovery and hardening by electro arc are established.
Conclusions
1. It has been established that the magnitude of the deformation Δ, mm of the part of tillage, is inversely depends on the thickness δ after hardening.
2. It has been established that the magnitude of the deformation Δ, mm of the part of tillage, is inversely dependent on the width B after hardening.
3. The rational modes of electro arc were established when hardening parts of tillage with a thickness of 4–10 mm, a width of 20 mm to 60 mm and a length of 230 mm to 500 mm, namely, a current of 350–400 A, a voltage of 50–55 V and a temperature cooling medium in the bath of the installation for simultaneous electro arc sharpening and hardening – 20–60 °С. Such rational modes of electro arc ensure the absence of deformation of parts of tillage less than 5 mm, which is permissible according to the requirements of regulatory, technical and design documentation.
Keywords: deformation, length, operation, electro arc, hardening, parts of tillage, thickness, width.
Technical and technological support for the production of organic fertilizers based on peat
Authors: Vozhik Yu. G. , Panasyuk V. I.
Published: March 2021

Annotation
Purpose. To increase the fertility of Ukrainian soils by using organic fertilizers based on peat.
Methods. For research, modern scientific and industrial recommendations were used to increase soil fertility through the use of organic fertilizers based on peat.
Results. By analyzing the results of scientific and industrial activities in the field of soil fertility, practical recommendations for the use of cheap and affordable peat-based organic matter for this purpose have been identified.
Conclusions. It is established that due to the significant reduction of livestock and the rise in price of mineral fertilizers in Ukraine, one of the effective ways to increase soil fertility is the use of organic fertilizers made from peat. Specific recommendations on technology and technical means for achieving this goal are identified.
Keywords: soil fertility, organic fertilizers, peat, composts, technology, technical means.
Biocontrol – providing prospects for sustainable development of domestic agriculture
Authors: Krutyakova V. I.
Published: March 2021

Annotation
Purpose. To study the dynamics of processes and the current state of the use of biological plant protection products in the world and to develop strategic approaches to the development of domestic production of biological products and the scientific basis for ensuring the ecologization of agriculture in Ukraine.
Methods. Analytical, economic and statistical, comparative analysis, graphical, cartographic.
Results. Against the background of significant growth in the production and use of biological agents in plant protection in the EU and the world, Ukraine continues to decline in the use of biosafe methods of protection. Thus, if in 1995 the protection of crops by biocontol was carried out on 3023 thousand hectares, which was 15.2% of all areas where the protection of crops was carried out, then in the future the area of application of biocontrol decreased and, for example, in 2018 amounted to 1967 thousand hectares (4.0% of all areas). With the growth of the range of microbiological means of protection, which are included in the “List of pesticides and agrochemicals in Ukraine”, sharply reduced production capacity for the production of biological products: in 2019 in Ukraine there were 24 biofactories and biolaboratories, and their total number of more 45, while before 1990 there were 268 biofactories and biolaboratories in Ukraine.
Conclusions
1. It has been established that in Ukraine, the use of environmentally friendly biological plant protection products for a long time is at an extremely low level and tends to further decrease.
2. In order to intensify the transition to ecologically safe methods of plant protection, the development of domestic production of biological products for plant protection, as well as the process of greening the agriculture, strategic approaches to the formation and development of a common environmental safety system, plant protection methods and the development of a network of enterprises for the production of biological processing of agricultural crops are proposed on a new technological and organizational basis.
Keywords: plant protection, biological pest control agents, biological pest control (biocontrol), integrated pest management, ecological agriculture, organic farming.
Innovative approaches to manage entomophages production
Authors: Lysenko V. P. , Chernova I. S.
Published: March 2021

Annotation
Purpose. Improving the efficiency of entomophages production by developing innovative approaches for it management.
Methods. System approach, intelligent information technologies.
Results. Innovative approaches for it management of entomophages production have been developed, which consist of: determining and ranking the factors that have the greatest impact on the quality of entomological products, and factors that lead to substandard products; the creation of structural and parametric complexes for assessing product quality; real-time assessment of the intensity of entomocultures development processes; automation of management abiotic parameters stepwise development of insects (temperature and relative humidity of the box for growing of insects) in real time; determining the quality of entomological products in conditions of incomplete information, taking into account the impact of a combination of abiotic and biotic production parameters; calculation of optimal values of production parameters in conditions of uncertainty; systematization of knowledge about the interaction of heterogeneous parameters in the production of entomophages.
Conclusions. The proposed innovative approaches to manage the production of entomophages can increase its efficiency by forming optimal management strategies, using the technological experience of specialists and modern intelligent information technologies in particular, SCADA-systems, fuzzy logic theory and cognitive analysis.
Keywords: innovative approaches, production of entomophages, intelligent information technologies.
Theoretical researches of threshing and separation processes of bread mass by the threshing-separating device
Authors: Hrytsaka O.M.
Published: March 2021

Annotation
Purpose. Theoretical researches of increase of efficiency of working processes of threshing, separation of grain mass by combine harvesters by improvement and use of a multi-drum design of the threshing-separating device with rational design and technological parameters of work capable to provide necessary agrotechnical requirements.
Methods. In theoretical researches the analysis of interaction of the threshing-separating device with grain mass with use of mathematical modeling of processes of threshing of grain, separation of a rough heap and their estimation is carried out.
Results. The mathematical model of the mobile multi-drum thresher modernized as a result of change of settings that allowed to increase efficiency of its work is considered; the dependences of quality on the design parameters of the threshing-separating device during the implementation of technological processes of grain harvesting due to the reduction of the total level of injuries and grain losses are obtained.
Conclusions. A mathematical model of improvement of the threshing process, separation of grain mass in the threshing gap of the threshing-separating device was developed, which allowed to obtain the dependences of the influence of structural and technological parameters on the level of threshing and separation. It is established that a significant reserve for improving the process of threshing, separation of grain mass is changes in the settings of threshing drums.
Keywords: combine harvester, mathematical model, threshing-separating device, theoretical research, grain harvesting, threshing process.
Symmetric Polynomials in the Symplectic Alphabet and the Change of Variables $z_j = x_j + x_j^{-1}$
Authors: Alexandersson Per , González-Serrano Luis Angel , Maximenko Egor , Moctezuma-Salazar Mario Alberto
Published: March 2021

Given a symmetric polynomial $P$ in $2n$ variables, there exists a unique symmetric polynomial $Q$ in $n$ variables such that\[P(x_1,\ldots,x_n,x_1^{-1},\ldots,x_n^{-1})=Q(x_1+x_1^{-1},\ldots,x_n+x_n^{-1}).\] We denote this polynomial $Q$ by $\Phi_n(P)$ and show that $\Phi_n$ is an epimorphism of algebras. We compute $\Phi_n(P)$ for several families of symmetric polynomials $P$: symplectic and orthogonal Schur polynomials, elementary symmetric polynomials, complete homogeneous polynomials, and power sums. Some of these formulas were already found by Elouafi (2014) and Lachaud (2016).

The polynomials of the form $\Phi_n(\operatorname{s}_{\lambda/\mu}^{(2n)})$, where $\operatorname{s}_{\lambda/\mu}^{(2n)}$ is a skew Schur polynomial in $2n$ variables, arise naturally in the study of the minors of symmetric banded Toeplitz matrices, when the generating symbol is a palindromic Laurent polynomial, and its roots can be written as $x_1,\ldots,x_n,x^{-1}_1,\ldots,x^{-1}_n$. Trench (1987) and Elouafi (2014) found efficient formulas for the determinants of symmetric banded Toeplitz matrices. We show that these formulas are equivalent to the result of Ciucu and Krattenthaler (2009) about the factorization of the characters of classical groups.
Clinical and Cytology Description of Various Neck Lumps in Madani Medan Hospital
Authors: Sitanggang Rido Aliberto , Juliana Lina
Published: March 2021

A B S T R A C TThis study aims to determine the clinical and cytological features of various necklumps. This study used a descriptive observational method with a cross-sectionalapproach to determine the clinical and cytological features of various neck lumps.This study used secondary data of patients with indications of a neck lump whowere undergoing treatment or examination at the Medan Madani Hospital in 2018- 2019. The population in this study were all patients with symptoms and positivesexperiencing a lump in the neck, at Madani Hospital Medan. Data processing iscarried out after the observation and recording of medical record data is inaccordance with what is needed, the data obtained is tabulated and coded for lateranalysis. The results of this study indicated that respondents who experiencedthyroid nodules were more dominant in female respondents with a total of 11respondents, with the most common type of thyroid nodule adenoma follicularthyroid, namely 9 respondents with female gender. Respondents who experiencedinflammation were dominated by female respondents with a non-specific chronicinflammation process on the right side of the neck with a total of 10 respondentswith a percentage of 23.8%.
Safety Assessment of Combination of Tinospora crispa Extract, Andrographis paniculata, Cinamomum burmanii, Syzygium polyanthum dan Momordica charantia in Hepar and Renal Function
Authors: Hidayat Rachmat , Patricia Wulandari
Published: March 2021

Tinospora crispa, Andrographis paniculata, Cinamomum burmanii, Syzygiumpolyanthum and Momordica charantia contain phenolics and flavonoidswhich are rich in benefits. Phenolic compounds are compounds that have anaromatic ring with one or more hydroxy groups, compounds derived fromplants that have the same characteristics, namely aromatic rings containingone or more hydroxyl groups. Herbal plants, which are rich in phenoliccompounds, have the efficacy, among others, as antioxidants, anti-inflammatory, antimicrobial, anti-fungal and prevents tumor growth. Theacute toxicity test is a procedure designed to determine the median lethal doseof a substance and its possible mechanism of action and target organs. Insimple terms, toxicity can be defined as the ability of a compound that cancause harmful effects or deviate from the biological mechanism in anorganism.
The Influence of Marketing Mix Variables on Purchasing Decisions and Its Impact on Post-Purchase Customer Satisfaction of Royal Garden Residence Bali Housing (Study at PT Properti Bali Benoa)
Authors: Sugiono Edi , Andini Nurwulandari  , Christiani Junita
Published: March 2021

A B S T R A C TThe research objective is to determine the effect of: marketing mix variables(product, price, location and promotion) on purchasing decision variables,marketing mix variables on customer satisfaction variables, purchasing decisionvariables on customer satisfaction variables at Royal Garden Residence Balihousing with purchase decisions as a mediating variable. . This research wasconducted in the city of Bali, with the object of research being the residentialconsumers of Royal Garden Residence Bali as the population in this study, with asample size of 150 respondents and using random sampling techniques. The datacollection method is in the form of an online questionnaire via google form andwhatsaap due to the situation in Indonesia which is currently being hit by theCovid-19 pandemic. The results of this study indicate that respondents have a goodperception of the variable marketing mix, purchase decisions and post-purchasesatisfaction Royal Garden Residence Bali. This is because the average value for allresearch variables is greater than 4 on the Likert scale. The results showed that themarketing mix variable both simultaneously and partially had a positive andsignificant effect on housing purchase decisions and the marketing mix variablehad a positive and significant effect both simultaneously and partially on consumersatisfaction after purchasing Royal Garden Residence Bali housing, and purchasingdecisions had a positive and significant effect. significant on consumer satisfactionafter purchasing the Royal Garden Residence Bali housing. Then the research alsoproves that there is an indirect influence of the marketing mix variable on consumersatisfaction after purchasing the Royal Garden Residence Bali housing through thepurchase decision. Promotion is the most dominant variable in increasingconsumer purchasing decisions for Royal Garden Residence Bali housing.
تأثير القوة المميزة بالسرعة في تطوير بعض الحالات الثابتة والمهارات الأساسية بكرة القدم لطلاب المرحلة الثالثة
Authors: عبيس خضير موفق
Published: March 2021

اشتمل البحث على خمسة أبواب, حيث تضمن الباب الأول بالبحث وأهميته, وثم التطرق إلى مشكلة البحث وأهدافه وفروضه وأخيرا إلى مجالات البحث الثلاثة البشرية والمكانية والزمانية. أما الباب الثاني فاشتمل على الدراسات النظرية, فقد تم التعرف على أنواع القوة العضلية وكيفية طرق تدريب وتنمية القوة والقوة المميزة بالسرعة. أما الباب الثالث فتم التطرق إلى منهج البحث وإجراءاته الميدانية, حيث تعرفنا على عينة البحث المستخدمة والتي اختارها الباحث من كلية التربية الرياضية / المرحلة الثالثة وكيفية تجانسها وتطرق أيضا إلى التجربة الاستطلاعية التي أجراها ومن ثم تطرق إلى الاختبار القبلي وكيفيته والى التجربة الاستطلاعية, ومن ثم إلى الاختبار البعدي ومعرفة الوسائل الإحصائية المستخدمة. أما الباب الرابع فقد تطرق فيه إلى عرض وتحليل ومناقشة نتائج البحث التي توصل إليها البحث ومعرفة مدى التطور في ركل الكرة لدى طلاب كلية التربية الرياضية بشكل جيد وأسرع. أما الباب الخامس فقد احتوى على الاستنتاجات والتوصيات التي توصل إليها البحث وكما احتوى البحث على منهج للوحدة التدريبية وملاحق أخرى كما تضمن أيضا صفحة لبعض المصادر.
مستوى الاتجاه النفسي لطلبة المرحلة الجامعية نحو درس طرائق تدريس التربية الرياضية
Authors: زيارة بجاي احمد
Published: March 2021

تضمن البحث خمسة فصول، احتوى الفصل الأول على المقدمة والأهمية والتي تلخصت في أن الاتجاه النفسي يعد من أهم عوامل ميل الطلبة نحو درس طرائق تدريس التربية الرياضية، وتتبلور المشكلة في معرفة مستوى الاتجاه النفسي للطلاب نحو درس طرائق تدريس التربية الرياضية، وعليه فإن تساؤل الدراسة هو:- (ما مستوى الاتجاه النفسي لطلبة المرحلة الجامعية نحو درس طرائق تدريس التربية الرياضية لكليات التربية الرياضية؟) وتضمن الفصل الثاني الدراسات النظرية والسابقة، أما الفصل الثالث فأحتوى منهج البحث وإجراءاته، إذ استخدم الباحث المنهج الوصفي بالأسلوب المسحي، وأجريت الدراسة على عينة قوامها (100) طالبا وطالبة للصف الثالث والرابع وكانت من ضمنها العينة الاستطلاعية والبالغة(10) والباقي(90)، وتم توزيع استبانة الاتجاه النفسي على الطلبة، واستخدمت الحقيبة الإحصائية spss في تحليل النتائج.وشمل الفصل الرابع عرض النتائج وتحليلها ومناقشتها، إذ أظهرت النتائج أن مستوى اتجاه الطلبة (فوق المتوسط) بلغ(15,56) و(متوسط) بلغ(66,67) اما (تحت المتوسط) بلغ (17,78)، أما الفصل الخامس فتضمن الاستنتاجات والتوصيات التي تمثلت بضرورة التنوع باستخدام اساليب تدريس التربية الرياضية بحسب الامكانات المتوفرة وطبيعة المهارة او الفعالية المراد تدريسها للطلبة،والتأكيد على اهمية درس طرائق التدريس كون الطلبة سوف يتخرجون مدرسين تربية رياضية،
تأثير أسلوب التدريب المتقاطع في تطوير بعض القدرات البدنية لدى لاعبي كرة القدم للصالات فئة الشباب
Authors: عباس مؤيد جاسم
Published: March 2021

تعد لعبة كرة القدم للصالات من الألعاب التي تحتاج الى القدرات البدنية المميزة والتي تعتمد على بناء متكامل لكي يستـــــطيع اللاعب تحمل الأعباء التي تواجهه اثناء المباراة نجد أن المتغير الاساسي الذي يحتاج اليه لاعب الصالات بكرة القدم هو اللياقة البدنية. وتماشيأ مع أسلوب التدريب الحديث بكرة القدم للصالات الذي يتطلب بناء بدني متعدد الجوانب فقد لجأ المدربون الى استخدام أساليب ووسائل وأجهزه وأدوات حديثة لتنفيذ العملية التدريبية وفق أسس علمية تضمن تحقيق النتائج المرجوة  ومشكلة البحث وذلك من خلال القصور في البرامج التدريبية التي لا تفي بالحاجة المتزايدة الى اللياقة البدنية العالية التي تعتبر الركيزة الأساسية للاعب الصالات بكرة القدم وهدف البحث التعرف على تأثير التدريب وفق الأسلوب المتقاطع في بعض المتغيرات البدنية للصالات بكرة القدم وعينة البحث هم من فئة الشباب للصالات واستخدم الباحث المنهج التجريبي للمجموعتين التجريبية والضابطة وحدد القدرات (القوة الانفجارية والقوة المميزة بالسرعة والسرعة وسرعة التحمل) واستخدم الاختبارات الخاصة بها وقام بأعداد تدريبات مقترحة باستخدام وفق أسلوب التدريب المتقاطع  واهم الاستنتاجات إن اعتماد التدريب المتقاطع  يعمل على تطوير بعض القدرات البدنية لدى لاعبي خماسي كرة الصالات فئة الشباب.
تأثير الالعاب الحركية في الحد من القلق لدى الاطفال بعمر (4 – 5) سنوات
Authors: عبد الواحد اميرة
Published: March 2021

الباب الاول (التعريف بالبحث) يعتبر اللعب احد الوسائل التي تستخدم لتعليم الطفل من خلال القدرة على التعبير عن ذاته وزيادة احتكاكه بالأطفال المحيطين به وبالتالي التأثير على صفاته البدنيــة والحركيـــة. لذا ارتأت الباحثــة دراسة تأثير الالعاب الحركية في الحد من القلق بعمر(4-5) سنوات وهدف البحث الى التعرف على وجود القلق لدى الاطفال بعمر(4-5) سنوات, واعداد مجموعة العاب حركية للحد من القلق لدى الاطفال والتعرف على تأثير تلك الالعاب, وافترضت الباحثة وجود فروق ذات دلالة احصائية بين الاختبارين القبلي والبعدي لمستوى القلق لدى مجموعتي البحث التجريبية والضابطة, وكانت مجتمع البحث اطفال روضتي البسمة والغفران بعمر(4-5) سنوات, اما الباب الثاني (الدراسات النظرية) تطرقت الباحثة الى المواضيع المتعلقة بموضوع البحث, اما الباب الثالث(منهجية البحث واجراءاته الميدانية) استخدمت الباحثة المنهج التجريبي بنظام المجموعتين التجريبية والضابطة وشرح المقياس القلق (اختر الوجه اللازم) لمعرفة الاطفال الذين لديهم قلق, والباب الرابع (عرض النتائج وتحليلها ومناقشتها) وضم هذا الباب عرض لنتائج التجربة الرئيسة لمجموعتي البحث التجريبية والضابطة. وما يخص الباب الخامس كانت الاستنتاجات ان المنهج المعد من قبل وزارة التربية (منهج وحدة الخبرة) والمنهج المعد من قبل الباحثة قد اثر بصورة ايجابية في الحد من القلق لدى الاطفال بعمر (4-5) سنوات, وظهور فرق معنوي بين نتائج الاختبارات البعدية لصالح المجموعة التجريبية, أما التوصيات فهي ضرورة ادخال العاب حركية متنوعة و اجراء اختبار القلق باستمرار على الاطفال واجراء دراسات مشابهة على متغيرات نفسية اخرى.
أثـــــــــر تمرينات خاصـــــــة فـــي تعلم مهارة الركلــــة المفصليـــــة (Knuckleball Kick) وفق سرعة وعدد دوران الكرة الذكية للاعبي كرة القدم الشباب
Authors: ابراهيم اسماعيل , عبد علي رأفت
Published: March 2021

قد اكتشف مؤخراً تكنيك جديد في التهديف من خلال التحليل البيوميكانيكي لبعض الركلات الحرة من الثبات الا وهو الركلة المفصلية التي أصبحت لها أهمية كبيرة في المباريات وبالتحديد في التهديف من الثبات اذ يصعب على حراس المرمى صد هذه الركلة وذلك لصعوبة التنبؤ بمسارها، وان أداء مثل هذه الركلة يحتاج الى تعلم الاداء الفني واتقانه من خلال معرفة المسارات الحركية لتلك المهارة ومن خلال الاستمرار والتكرار في المهارة يسهل للاعب الوصول الى مرحلة الاتقان والالية في الأداء، وفي ضل التطور التكنولوجي في الأجهزة والأدوات المستخدمة في الجانب الرياضي كان لازماً محاكاة هذا التطور فيما يخص لعبة كرة القدم مثل الكرة الذكية التي يتم من خلالها تطوير مستوى اللاعبين في مهارة التهديف من الثبات في الركلات الحرة المباشرة او التهديف بدون وجود جدار وكذلك الركلة المفصلية من خلال إعطاء معلومات تقييم عن الأداء اذ تكمن أهمية البحث في تعلم مهارة الركلة المفصلية وفق متغيري السرعة وعدد الدوران للكرة، وتتحدد مشكلة البحث في:

عدم تعلم اللاعبين العراقيين لمهارة التهديف بالركلة المفصلية.
أهمية التعرف على متغيري السرعة وعدد دوران الكرة لهذا النوع من التهديف من الثبات.

  لذلك كان دافعاً للباحث في دراسة الركلة المفصلية من الجانب البيوكينماتيكي وكذلك استخدام التكنولوجيا في تعلم وتقييم هذه الركلة بالكرة الذكية.
اذ تتضمن اهداف البحث (اعداد تمرينات خاصة لتعليم مهارة الركلة المفصلية فضلا عن التعرف على متغيري السرعة وعدد الدوران للكرة ومدى أثر التمرينات الخاصة ومستوى أداء اللاعبين). فضلا عن فرض البحث هو (هناك فروق ذات دلالة إحصائية بين الاختبارين القبلي والبعدي في متغيري السرعة وعدد الدوران للكرة ومستوى مهارة الركلة المفصلية من الثبات).
استخدم الباحث المنهج التجريبي بتصميم المجموعة الواحدة ذات الاختبارين القبلي والبعدي وتم اختيار العينة بالطريقة العمدية وتكونت من (3) لاعبين كرة القدم لنادي القوة الجوية الرياضي لفئة الشباب، اذ تم استخدام الاختبار الخاص بالركلة المفصلية والغرض منه قياس مستوى أداء الركلة المفصلية للاعبين، ومن خلال النتائج التي وصل اليها الباحث اذ استنتج الباحث ان هناك تطور لمتغير السرعة وعدد دورانات الكرة وذلك من خلال زيادة السرعة وتقليل عدد الدوران، وأوصى الباحث ضرورة استخدام الكرة الذكية في تعليم وتدريب الركلات الحرة الثابتة بأنواعها وكذلك يجب ان يكون الاختبار الخاص بالركلة المفصلية في مسافات مختلفة.
علاقة سرعة الاستجابة ودقة اصابة الهدف العلوي بالسفلي للاعبي سلاح سيف المبارزة الشباب
Authors: حميد عبد الهادي
Published: March 2021

اولا التعرف على قيم سرعة الاستجابة الحركية ودقة اصابة الهدف للقسم العلوي والسفلي للاعبي سلاح سيف المبارزة الشباب وثانيا معرفة العلاقة بين سرعة الاستجابة الحركية ودقة اصابة الهدف للقسم العلوي بالقسم السفلي للاعبي سلاح سيف المبارزة الشباب. وقد استخدم الباحث المنهج الوصفي بالأسلوب المسحي على عينة البحث العمدية وهم(10) لاعبين من اندية بغداد بسلاح سيف المبارزة للشباب وتمت بعد ذلك المعالجات الإحصائية حيث أستخدم الباحث الوسط الحسابي-الانحراف المعياري ومعامل الارتباط. وتناول الباحث عرض وتحليل ومناقشة النتائج حيث توصل للاستنتاجات التالية:اولا ظهور علاقة ارتباط غير معنوية بين سرعة الاستجابة الحركية للقسم العلوي بالقسم السفلي للاعبي سلاح سيف المبارزة الشباب وثانيا ظهور علاقة ارتباط غير معنوية بين دقة اصابة الهدف للقسم العلوي بالقسم السفلي للاعبي سلاح سيف المبارزة الشباب. لذلك يوصي الباحث بمعرفة خصوصية رياضة المبارزة من حيث متطلباتها البدنية والحركية فضلا عن المتطلبات الاخرى واعطاء اولويات في التدريب والترتيب الصحيح لها بما يحقق الهدف وكذلك ضرورة استعمال تمرينات خاصة للاعبين الشباب وللقسمين العلوي والسفلي.
تأثير التعلم الخططي باللعب التنافسي في تطوير سرعة الاستجابة الحركية لمثير عشوائي ومستوى إنجاز لاعبي سلاح السيف والعلاقة بينهما
Authors: فلاح علاء عبد الله
Published: March 2021

هدفت هذه الدراسة الى التعرف على تأثير استخدام التعلم الخططي باللعب التنافسي في سرعة الاستجابة الحركية لمثير عشوائي ومستوى انجاز لاعب السيف ومعرفة العلاقة بينهما. استخدم الباحث المنهج التجريبي لملاءمته طبيعة البحث وتضمنت عينة البحث عشرة لاعبين بسلاح السيف في عمر (15-17)سنة. اهم استنتاجات البحث كانت أن التعلم الخططي باللعب التنافسي ساهم في تطوير سرعة الاستجابة الحركية لمثير عشوائي ومستوى الانجاز فضلا عن علاقة الارتباط العالية ولصالح المجموعة التجريبية. وقد أوصى الباحث الاهتمام بمبدأ التعلم الخططي وزيادة الوقت المخصص للعب.

الكلمات المفتاحية: المبارزة بالسيف، سرعة الاستجابة الحركية، التعلم الخططي، مستوى الانجاز.