bluuebunny/crossref_metadata_2025 huggingface dataset:
„Winning is strictly prohibited”. O strategiach twórczych Banksy’ego i Jana Klaty
Authors: Lubaszewska Michalina
Published: October 2020

The paper analyzes the activities of two socially committed artists: Banksy and Jan Klata, who both use the funfair motif. Banksy employs it in a literal though subversive way in his project Dismaland, which is a quizzical reversal of Disneyland. Klata employs it in his performances (which often take the form of the director’s comments on the reality that surrounds us), showing a set of “amusements” resembling those from a funfair and leading the viewer to a perceptive dissonance (similarly to the collection of Eisenstein’s amusements). It seems that the space created by the committed art that uses the concept of a funfair allows for the implementation of a real rebellion against the status quo. Actual amusement parks, however, create only an illusion of the possibility to break with the norms of the social system.
Plac Czerwony jako technologia oporu w rosyjskiej sztuce protestu
Authors: Dynda Barbara
Published: October 2020

Red Square is a symbolic place for the Moscow dissidence protests. Russian artists, writers and dissidents have frequently used the history of the square’s memory as a crucial and fundamental issue within the framework of their strategy. Haunting images associated with Red Square’s past, permanently returning in the history of the Russian activism, always refer both to universal narratives of the politics of protest and to the specific contexts producing entirely new meanings. Each time, through their public actions artists create new meanings for the Red Square’s space – they expose the existing limits of the power apparatus and call for the right to legitimize it, therefore contesting the links between the theatre of legitimacy and the public space. From this perspective, the space of protest becomes a fundamental instrument of political action, and the square - ordinarily used in the established order to manifest the government’s symbolic authority - this time becomes a kind of technique as well as a material body support in the politics of resistance.
Development of endurance in volleyball players with the help of fitness elements in ZVO
Authors: Vaskevich S.
Published: October 2020

One of the most important problems of training volleyball players is the development of motor abilities and, in particular, endurance. Many researchers note that endurance is a common property of the human body, which finds a specific manifestation in various types of motor activity, including sports. In other cases, endurance is the ability of the body to perform any physical activity for a long time without reducing its effectiveness, in other words, endurance is opposed to the process of fatigue. A number of authors, along with General and special endurance, distinguish high-speed, high-speed-power, power, local, regional, global, and in some cases universal, long-term, short-term, and static endurance as a type of special endurance. A common component for all types of endurance is volitional tension, through which the intensity is maintained, but up to a certain limit. However, endurance should be distinguished from such a concept as human performance. Despite various formulations, all authors agree that efficiency is the maximum work that a person can do, that is, the ability to perform the maximum amount of work possible for them. Now the effectiveness of aerobics is generally recognized. Aerobics is a set of endurance exercises that last for a relatively long t ime and are associated with achieving a balance between the body's oxygen needs and its delivery. The body's response to increased oxygen demand is called a training effect or positive physical shifts. To develop such physical qualities as endurance, volleyball players need to include various types of physical training in their training. When performing physical exercises, some changes occur in the body: the total volume of blood increases so much that the ability to transport oxygen improves, and therefore the athlete shows greater endurance during strenuous physical exertion. Having analyzed the modern scientific and methodological literature and the latest ways of using fitness varieties. We can say that fitness technologies develop, strengthen, correct and generally improve the physical fitness of athletes, as well as improve the individual physical quality of each athlete, which required more attention. Aerobics helps to cope with physical and emotional stress. Therefore, volleyball athletes who include in their training fitness programs aerobic load much faster improve their physical qualities, namely endurance.
A differentiated assessment of the physical fitness of young athletes 11-14 years old, studying hand- to-hand combat at the basic stages
Authors: Volkov V. L.
Published: October 2020

It was established that the only control elements that allow providing feedback from the athlete to the coach is monitoring and evaluation, and their content should be scientifically sound and take into account age and gender characteristics of the contingent and the specifics of the chosen sport. Moreover, the integrated approach in the period of active biological and mental development is of particular importance.

The analysis of our own experimental data shows that there are reliable positive dynamics of all the results of the study of the development of general and special physical abilities of mittens from 11-12 to 13-14 years. The greatest increase is observed in the indicators of determining the state of development of muscular sensation - 32.8%, the endurance of the muscles of the shoulder girdle - 24.1%, and the number of strokes with the pear in 20 s - 21.8%.

It is also necessary to note the presence of positive changes in the volume of more than 13% as a result of flexing and extending the arms in the emphasis lying on their fists for 10 s, running at 60 m, the number of lifting of the torso for 1 min, tilting the torso forward and long jump from place. However, at the same time, an increase in the endurance index of 5.8% indicates the need to introduce additional cyclic exercise with low intensity and significant volumes to reduce the imbalance of aerobic and anaerobic capacity of young mittens. The developed methodological recommendations assume the existence of a reasonable content of control, which provides the receipt of operative information on the development of both general and special physical abilities of young mittens. In addition, the availability of rating tables, depending on the stage of sports improvement, the differentiation of the contingent and the introduction of a selective method of influence in the process of general and special physical training of young mittens 11-12 and 13-14 years.
Introduction of innovative technologies in physical education of student youth
Authors: Ryabchenko V. , Donets I. , Tkachenko I. , Skoropud V.
Published: October 2020

The great reserves for further increasing effectiveness of physical education of a learning youth are at secrets of age pecularities of controlling movements as well as at regularities of age changing physiological mechanisms which condition at certain measure stating moving functions of a human at an ontogenesys. The subject of these investigations are age pecularities of building and controlling movements as well as an application of these pecularities at sport and oriented physical education of a youth. Learning this question is possible from the point of view of various sciences: physiology, psychology, biomechanics, cybernetics, pedagogy. It is considered that at present the largest effect we can obtain when there is simultaneous support on all abovenamed branches of science. But when there is such various approach to this question it is important that the attention would be paid to certain object of investigation.

This is the structure of psychophysical preparing of a human (PPP) which is considered at the theory of physical education as the whole structure of psychological and physical qualities; this structure determines a successfulness of moving activities ar various conditions. This article considers some results of our investigations; these results characterize pecularities of various appearences of PPP concerned to a youth of various age groups.

These data we can divide into three parts: the data about cabability to mastering new moving actions; the data which characterize age pecularities of certain appearences; the data about co – called moving adaptation and a structure PPP of a learning youth.
Avaliação do equilíbrio dos cascos de equinos criados a pasto e estabulados na Bahia
Authors: Araújo da Silva Fransael , Oliveira de Paula Liliane Aparecida , Seudo Lopes Maristela de Cássia
Published: October 2020

The objective of this study was to evaluate the balance of the hooves of horses reared on pasture and sated on the northern coast of Bahia. For this, 43 horses, without defined breed, average weight of 300 to 400 kg, both sexes, 21 animals reared in the field at Campo Grande Farm in Crisópolis and at the Experimental Farm of the Federal University of Bahia in Entre- Rios and 22 horses raised in stables in the Cavalary of the Military Police of Bahia. The following measurements were evaluated: tweezer length (p), bead height (t), length (a) and sole width (b) and angle of the hull (A) of the thoracic and pelvic limbs. It was found that the animals were tabulated with longer length, smaller sole width and lower bead height, but with no difference in tweezer length and hull angle of both pelvic and thoracic limbs. Regardless of management, it was found that the thoracic limbs present higher values in measures p, t, a and b and lower values in A, demonstrating to be larger than the pelvic limbs. Although casing and ironing are used to maintain the balance of the hulls, in the present study, the animals kept in a stall presented smaller and longer hooves than those reared on pasture, demonstrating that imbalances in hoof measurements were more significant in the animals kept in stall, that is, in animals that are frequently casqueted, which can lead to future problems.
Monitoramento soroepidemiológico de peste suína clássica na região da zona da mata do Estado de Rondônia
Authors: Mendonça Talita
Published: October 2020

Classical Swine Fever (CSF) is a disease that affects pigs and according to the World Organization of Animal Health is mandatory notification. The objective of this study was to report the monitoring and surveillance of classical swine fever in technical and non-technical pig farms in the Zona da Mata region of the State of Rondônia. For this, 66 serological samples from 36 properties were collected and tested by the commercial kit ELISA (CSFV, IDEXX Laboratories). The investigation was carried out by the Agrosilvopastoral Sanitary Defense Agency of the State of Rondônia in 2017, in two periods, from May 29 to June 23 and November 27 to December 22. The results showed that 100% of the 66 serological samples tested did not present anti-PSC antibodies. Serological monitoring and surveillance of pig farms are of great importance to maintain the status of the State of Rondônia as PSC free, being in this period of the study the region of Zona da Mata as free of PSC.
Aspectos epidemiológicos, clínico-patológicos e diagnóstico de raiva em animais de produção: Revisão
Authors: Quevedo Lucas
Published: October 2020

Rabies is a viral disease that affects wild and domestic animals has been reported in Brazil since 1911. From the point of view of public health, it is imperative that people who have contact with animals be subjected to vaccination. The rabies virus is neurotropic and highly lethal to humans and animals. The damage inherent to rabies is difficult to quantify and the livestock production chain is the most affected. This paper briefly addresses the etiological aspects of rabies, as well as epidemiological factors involved in maintaining the disease in productive systems and the wild and urban environments. The clinical signs in animals affected by the disease were listed according to the species and clinical forms of presentation of rabies, namely, paralytic and furious. Topics on the main necropsy changes, histopathological lesions of the disease were also addressed, with some peculiarities regarding the distribution and characteristics of the lesions. The main forms of rabies diagnosis in farm animals and measures of control and prophylaxis were listed.
Osteossíntese tibial com fixador esquelético externo tipo II em um caprino
Authors: Rodrigues Luan , Araujo Ana Lucélia De , Probo Ana Luísa Alves Marques , Lima Jorge Domigos da Silva , Júnior Gerôncio Sucupira , Filgueira Fabrícia Geovânia Fernandes , Leite Rodrigo Formiga
Published: October 2020

This study aimed to report the case of a goat with a transverse tibial fracture submitted to osteosynthesis with type II external skeletal fixator. A goat was seen at the Veterinary Hospital Adílio Santos de Azevedo of the IFPB on the Sousa - Paraíba campus, complaining of lameness of the left pelvic limb, and a transverse closed fracture in the middle third of the tibia was diagnosed. External immobilization of the limb with plaster was performed, but there was no improvement, requiring osteosynthesis with the use of type II external skeletal fixator. The limb support of the operated limb was observed the day after the surgery. The skin stitches were removed thirteen days after the surgical procedure, as the wound was healed and unchanged. The animal was hospitalized during the first 25 days after surgery, after which the animal was sent back to the property with the recommendation of cleaning the external skeletal fixator every two days and isolating the animal until removal. Sixty-eight days after the surgical procedure, the animal was without supporting the limb, with purulent secretion draining through the pins path and a penetrating wound in the lateral region of the pelvic limb, looseness of the pins, and pain on manipulation. Radiographic examination revealed bone lysis along the pins' path. The implant was removed and medication with antibiotics and analgesics was prescribed. After twenty days of this last visit, the animal returned to the HV with the wounds healed, without pain on palpation and intermittent support of the limb, and may also observe a deviation at the fracture site due to bad bone union. It is concluded that despite the post-surgical complications, the animal recovered of the fracture with the use of a type II external skeletal fixator because even though there was no continuity of adequate post-surgical management, there was a clinical union of the fracture.
Influência da amamentação e anestro pós-parto na eficiência reprodutiva da fêmea bovina
Authors: Risques Paola
Published: October 2020

The reproductive efficiency of a breeding herd is the most important tool when you want to improve the cattle industry of a farm. To evaluate the reproductive efficiency of cows, some features should be taken into consideration, as the number of conceptions and calves born in a year, and the number of calves weaned, for that to happen it is necessary that each cow can give birth to a calf every 12 months, this is only possible if the service period of these animals does not exceed 60 to 90 days. This paper will discuss the main factors leading to an increase in the length of service of females and consequently a decrease in reproductive efficiency. Several factors that affect female reproduction, including those that stand out are: the effect of breastfeeding and calf presence negatively affects resumption of estrous cycles of female, there are some forms of management of breastfeeding to help reduce this impact caused by the negative lactation. How cattle ranching requires management to create the flock, these animals suffer from stress caused by this management, which generates a negative effect on reproduction, which is often also affected by the seasons and heat stress. The postpartum anestrus and its pathophysiology are also very important when it comes to reproductive efficiency, as well as reproductive health and disease.
COMPARATIVE ANALYSIS OF QUANTUM-CHEMICAL METHODS FOR CALCULATION ELECTRONIC CHARACTERISTICS OF POLYTHIOPHENES USED IN SOLAR ELEMENTS
Authors: Nurgaliyev I. , Burkhanova N. , Rashidova S.
Published: October 2020

In this paper, a comparative analysis of semiempirical quantum chemical methods for calculating the energy of highest occupied molecular orbital (EHOMO) for various polythiophenes used in hybrid solar cells is carried out. The energies of the highest occupied ЕВЗМО (eV) molecular orbitals calculated by quantum-chemical methods. Models built using HyperChem 8.0. software
TO THE QUESTION OF IMPROVING THE METHODOLOGY OF FORECASTING BANKRUPTCY SMALL BUSINESS
Authors: Ivanova E.
Published: October 2020

The aim of this paper is to identify the possibilities of applying of existing models for estimation of the probability of bankruptcy in domestic and foreign practice to predict the risk of default of small enterprises. The relevance of this research is due to the role the small businesses play in the social-economic development of regions and the country as a whole. The relationship between individual indicators of the region’s social-economic situation and the level of bankrupt enterprises in the total number of enterprises is shown. The differentiation of Russian regions in terms of social-economic development (in Siberian Federal district as an example) are demonstrated, the desirability of including of regional factor in model of bankruptcy forecasting is highlighted. Based on the dialectical approach, comparison, abstraction, analysis and synthesis, a conceptual approach to creation of logistic regression model for predicting the bankruptcy of small enterprises is described.
Stepped Facade Created Using Overlay Panels of External Walls
Authors:   AO «TSNIIEP zhilishcha – institute for complex design of residential and public buildings» (AO «TSNIIEP zhilishcha») (9, bldg. 3, Dmitrovskoe Highway, Moscow, 127434, Russian Federation), NIKOLAEV S.V.
Published: October 2020

During the sixty-year period of existence of domestic large-panel housing construction, this type of housing remains the most popular due to its affordability. The transition to flexible technologies for the production of panel buildings makes it possible to create high-quality and comfortable housing. However, there is some return to the construction of panel buildings with flat monotonous expressionless facades. The article describes a method for creating stepped facades using overlay panels of external walls, the connection of decorative external layers in which «overlap» is made. This makes it possible to create stepped facades in a simple technological way, hide part of the vertical seams, increase the output of products, and simplify the achievement of the desired apartment layout. The method is protected by a Eurasian patent. Keywords: stepped exterior panel, overhead exterior panel, «overlap» connection, loop precast-monolithic connections, stepped facade, apartment layouts, multi-hollow plates.
Use of Foam Polystyrene Waste in the Conditions of a Reinforced Concrete Products Factory
Authors:   ZAO «198 KZHI» HC GVSU «Center» (35, settlement of Stroitel, Mozaysky District, Moscow Oblast, 143203, Russian Federation), YANUTINA S.E.
Published: October 2020

The relevance of research in the factory laboratory of JSC «198 KZHI», which is part of the HC GVSU «Center», is dictated by the need to dispose of foam polystyrene waste that occurs in large quantities when producing the precast concrete. In the production of three-layer external wall panels, polystyrene heatinsulating plates of the PPS 17-R-A brand are used as an effective insulation material. The secondary use of PPS 17-R-A for its intended purpose, as a heater, is not possible. The volume of foam polystyrene produced varies from 25 to 45 m3 per month. Utilization (disposal) of foam polystyrene waste is an expensive undertaking. Its use as a filler in the production of expanded polystyrene blocks was tested in the factory’s laboratory to produce foam polystyrene concrete with specified physical and mechanical characteristics. The results of testing of expanded polystyrene concrete of classes B2.5 and B 7.5 are presented. It is shown that under the conditions of the reinforced concrete factory technology, the production of polystyrene concrete blocks is possible with the achievement of the design strength. The information presented in the article is aimed at motivating specialists who produce recast concrete to the possibility of using foam polystyrene waste for low-rise construction. Keywords: foam polystyrene, ecology, energy efficiency, foam polystyrene concrete, foam polystyrene heat insulation plates, precast concrete.
Mineral Injection Mixtures for Construction and Operation of Underground Structures under Dense Urban Development Conditions
Authors:   National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation), Harcenko I.Ya. , Panchenko A.I. ,   National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation), Piskunov A.A. ,   Russian University of Transport (MIIT) (9, bldg. 9, Obraztsova Street, Moscow, 127994, Russian Federation), Harcenko A.I. ,   OOO “Research Center of “Underground Structures” (7, bldg. 2, Derbenevskaya Embankment, Moscow, 115114, Russian Federation), Mirzoyan M. ,   National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
Published: October 2020

The high level of complexity and responsibility of underground structures implies the need to develop and implement a set of special protective measures necessary for implementation both at the construction stage and at the operation stage of underground structures. During the construction of tunnel and neartunnel structures, various aboveground structures, including engineering and transport structures, are involved in the zone of their influence. It is also important to ensure reliable protection of enclosing structures from the influence of ground water. Dewatering and drainage of soils is accompanied by the development of additional sedimentary deformations that require the implementation of complex and expensive protective measures. To date, effective design and technological solutions have been developed to protect the surrounding development, as well as methods and technologies for eliminating excess deformations and water seepage through the body of enclosing structures using various injection technologies and mineral-based injection systems. Moscow State University of Civil Engineering developed a range of materials that can successfully implement soil strengthening, elimination of sedimentary deformations and elimination of ground water leaks through the enclosing structures of underground structures. It is shown that the protection of buildings and structures from excessive sedimentary deformations during the development of underground space in conditions of dense urban development is provided by the technology of compensatory injection with the use of special mineral-based injection systems. It is established that to eliminate active water seepage through the body of enclosing structures of underground structures, it is advisable to use combined injection systems. Keywords: underground construction, deformations, water seepage, soil precipitation, compensatory injection, injection, impregnation.
Symbolizing Destruction
Authors: Adams Alison E. , Shriver Thomas E. , Longest Landen
Published: October 2020

Emotions can play an important role in the perception of grievances, yet we know little about how environmentalists strategically utilize emotions to bolster activism and garner support. Drawing on social movement and environmental sociological research, we analyze how moral shocks can be used to mobilize activists against environmentally destructive activities. We study the case of Libkovice, Czech Republic, where environmentalists battled against the coal industry to save a city from being razed to access coal reserves. The data come from in-depth interviews, organizational and documentary video, and archival documents. Findings indicate that environmentalists drew upon symbols of destruction, such as threats to the local church, to fuel anger and mobilize the campaign. Results show how symbolic environmental campaigns can serve as beacons for future protest.
Artificial Intelligence
Authors: Meij Jan Martijn
Published: October 2020

Lovelock, James. 2019. Novacene: The Coming Age of Hyperintelligence. Cambridge, MA: The MIT Press.

McKibben, Bill. 2019. Falter: Has the Human Game Begun to Play Itself Out? New York: Holt.
ВПЛИВ РЕАКЦІЙНОГО ПОРОШКУ НА МІЦНІСТЬ ПОРОШКОВОГО БЕТОНУ
Authors: Шишкіна О О , Шишкін О О
Published: October 2020

Наведено результати досліджень впливу реакційних порошків в присутності поверхнево-активної речовини, яка утворює міцели, на величину міцності порошкового бетону і швидкість її формування. Доведено, що колоїдна поверхнево-активна речовина збільшує вплив реакційного порошку на міцність бетону.
МЕТОДИКА ЕКСПЕРИМЕНТАЛЬНИХ ДОСЛІДЖЕНЬ МОДИФІКОВАНОЇ СИЛОРОМ ДЕРЕВИНИ З СТИМУЛЯЦІЄЮ ПРОСОЧЕННЯ УЛЬТРАЗВУКОМ ЗА РОБОТИ НА СТИСК ВЗДОЖ ВОЛОКОН
Authors: Гомон С С
Published: October 2020

Розроблено методику експериментальних досліджень роботи сухої цільної, клеєної деревини різних порід та модифікованої деревини полімерною композицією  "СИЛОР" із стимуляцією просочення ультразвуком. Показано конструкцію дослідних зразків призм з цільної, клеєної деревини конструктивних розмірів та особливості розміщення приладів на них.
РОЗРАХУНОК КОСОЗІГНУТИХ ДЕРЕВ’ЯНИХ БАЛОК З ВИКОРИСТАННЯМ ДЕФОРМАЦІЙНОЇ МОДЕЛІ
Authors: Гомон С С , Гомон П С , Павлюк А П
Published: October 2020

Наведено методику розрахуноку міцності дерев’яних балок, що знаходяться в умовах косого згину з використанням деформаційної моделі, яка враховує більш реально роботу таких елементів.
ТЕОРЕТИЧНИЙ ТА ЕКСПЕРИМЕНТАЛЬНИЙ АНАЛІЗ РОЗПОДІЛУ ТЕМПЕРАТУР У БАГАТОШАРОВІЙ СТРУКТУРІ
Authors: Шляхетка О , Багдасарян В , Вонгровська М , Дохойда М
Published: October 2020

В роботі співставленні данні експериментальних досліджень розподілу температури в двокомпонентній багатошаровій періодичній структурі з результатами розрахунків, що  здобуті внаслідок теоретичного моделювання.  У відповідності до виконаного  аналізу вказується  на збіжність результатів розрахунків, знайдених за  експериментальним та теоретичним підходами.
ПРАКТИЧНИЙ МЕТОД РОЗРАХУНКУ ПІДСИЛЕНИХ ЗГИНАЛЬНИХ ЗАЛІЗОБЕТОННИХ ЕЛЕМЕНТІВ
Authors: Бабич В Є , Савицький В В , Зятюк Ю Ю
Published: October 2020

В статті наведені теоретичні основи та методика розрахунку згинальних залізобетонних елементів згідно з новими нормами проектування залізобетонних конструкцій ДБН В.2.-6-98:2009 «Бетонні і залізобетонні конструкції. Основні положення» та ДСТУ Б В.2.6-156:2010 «Бетонні та залізобетонні конструкції з важкого бетону. Правила проектування», які базуються на сучасній деформаційній моделі і повністю гармонізовані з європейськими стандартами (Єврокод 2).
ПРОЕКТИРОВАНИЕ СОСТАВА РЕАКЦИОННО-ПОРОШКОВОГО БЕТОНА, СОДЕРЖАЩЕГО ЗОЛУ-УНОСА В КАЧЕСТВЕ АКТИВНОЙ МИНЕРАЛЬНОЙ ДОБАВКИ
Authors: Житковский В В , Дворкин Л И , Степасюк Ю А , Механчук В М , Паничевний В В
Published: October 2020

В статье приведенные результаты исследования реактивно-порошковых бетонов, в которых в качестве активной минеральной добавки использована зола-уноса ТЭС. По результатам исследований было построено номограммы, которые, в совокупности с комплексом полученных моделей, могут быть использованы для проектирования складов РПБ с комплексом заданных свойств.
СТРУКТУРНЕ РІЗНОМАНІТТЯ ТА ВЛАСТИВОСТІ БЕТОНІВ ПРИ ТРИВАЛОМУ ТВЕРДІННІ
Authors: Коробко О О , Вировой В М , Закорчемний Ю О , Кушнір О М
Published: October 2020

Підвищити стійкість бетонів при тривалому твердінні можна за рахунок направленої організації початкової структури на макрорівні шляхом збільшення різноманіття умов взаємодії на границях розділу між матричним матеріалом та заповнювачами.
УЗАГАЛЬНЕНА МОДЕЛЬ ЗЧЕПЛЕННЯ АРМАТУРИ З БЕТОНОМ GENERAL MODEL OF ADHESION REINFORCEMENT OF CONCRETE
Authors: Ромашко О В , Ромашко В В , Журавський О Д
Published: October 2020

Розроблені основні положення узагальненої моделі зчеплення арматури з бетоном. Визначені найважливіші параметри щодо визначення рівня їх взаємодії на будь-якій стадії деформування залізобетонного елемента. Запропоновано критерій порушення зчеплення арматури з бетоном.
ПОРІВНЯЛЬНИЙ РОЗРАХУНОК МІЦНОСТІ ВЕРТИКАЛЬНИХ СТИКІВ ЗБІРНИХ СТІНОВИХ ЕЛЕМЕНТІВ
Authors: Довженко О О , Погрібний В В , Марюха Д Ю , Чумак Є І
Published: October 2020

Для впровадження в будівельну галузь України шпонкових стиків збірних стінових елементів на гнучких петлях необхідно розроблення відповідної нормативної бази. Виконано порівняльний розрахунок визначеної згідно чинних норм теоретичної міцності таких стиків з експериментальними даними. Результати свідчить про їх суттєву різницю. Надані пропозиції щодо вдосконалення методу розрахунку.
ЕКСПЕРИМЕНТАЛЬНІ ДОСЛІДЖЕННЯ ТРІЩИНОСТІЙКОСТІ І МІЦНОСТІ ПОХИЛИХ ПЕРЕРІЗІВ ЗАЛІЗОБЕТОННИХ БАЛОК, ЗАВАНТАЖЕНИХ ЗОСЕРЕДЖЕНИМИ СИЛАМИ
Authors: Максимович С Б , Крочак О В
Published: October 2020

У статті розглянуті експериментальні дослідження похилих перерізів однопролітних залізобетонних балок, завантажених зосередженими силами при співвідношенні а/d=0,5. Випробувані балки мали одинакові характеристики і відрізнялися тільки видами армування похилих перерізів. При аналізі експериментальних досліджень виявлено специфіку утворення і розвитку похилих тріщин у зоні дії  поперечної сили і згинального моменту, вплив різних видів армування похилих перерізів на несучу здатність балок.
АНАЛІЗ ЗАЛЕЖНОСТЕЙ ДЛЯ ПОБУДОВИ ПОВНИХ ДІАГРАМ МЕХАНІЧНОГО СТАНУ ДЕРЕВИНИ «σ-u»
Authors: Гомон С С
Published: October 2020

Проведено детальний аналіз літературних джерел з побудови діаграм механічного стану деревини «σ-u». Наведено степеневі, показникові, поліноміальні, тригонометричні, дробові залежності, які були використані різними вченими в різні роки, для опису даних діаграм «напруження-деформації».
On the selection of fractional-differential model of convective diffusion with mass exchange
Authors: Bohaienko Vsevolod , Gladky Anatolij
Published: October 2020

The paper considers two fractional-differential models of convective diffusion with mass exchange and proposes a decision-making algorithm for determining the optimal model at the time of concentration field observation. As for soils of fractal structure, direct experimental determination of model parameters’ values and type of mass exchange process is in many cases impossible, calibration and determination of the most adequate models is performed mainly solving inverse problems by, in particular, meta-heuristic algorithms that are computationally complex. In order to reduce the computational complexity, we study the qualitative differences between diffusion processes described by fractional-differential models with non-local mass exchange on the base of the Caputo derivative and local non-linear mass exchange based on the non-equilibrium sorption equation that corresponds to the description by the Caputo-Fabrizio derivative. We determine under which conditions both models within a given accuracy describe the same set of measurements at a certain moment of time. When the solutions are close at a certain initial stage of process development, the model with the Caputo derivative describes its faster approach to a steady state. Based on the obtained estimates of differences in solutions, a decision-making algorithm is proposed to determine the most accurate model and the values of its parameters concurrently with the acquisition of measurements. This algorithm’s usage reduces the time spent on solving inverse calibration problems.
Spatial Analogues of Numerical Quasiconformal Mapping Methods for Solving Problems of Bursts Parameters Identification
Authors: Boichura Mykhailo
Published: October 2020

An approach to solving the problem of image reconstruction based on applied quasipotential tomographic data in the three-dimensional case is developed. It is based on the synthesis of spatial analogues of numerical quasiconformal mapping methods and algorithm for identifying the parameters of local bursts of homogeneous materials using similar methods on the plane. The peculiarity of the corresponding algorithm is taking into account (for each of the appropriate injections) the presence of only equipotential lines (with given values of the flow function or distributions of local velocities on them) and flow lines (with known potential distributions on them) at the domain boundary. Numerical experiments of simulative restoration of the environment structure are carried out.
Development of automation system of the process of electromagnetic treatment of industrial wastewater from ferromagnetic impurities
Authors: Safonyk Andrii , Burduk Anna , Hrytsiuk Ivanna , Pasichnyk Vasyl
Published: October 2020

A mathematical model of the iron removal process taking into account the factors influencing the quality of cleaning was presented. Based on the mathematical model, a control algorithm was developed, which became the basis of the structural control scheme. Further, was set up the graphical screen for automatic and manual control, display errors and main parameters of information technology projects.
Mathematical modeling of a one-dimensional demographic process
Authors: Krasiuk Bohdan Vitaliyovych , Vlasyuk Anatoliy Pavlovich
Published: October 2020

The specifics of the current stage of society connects with significant changes in directions and internal scales and interstate migration of the population. In this regard population migration processes between the two states are exploring in a one-dimensional case. Now the scientific literature offers different mathematical models of these processes [1]. However, we will use diffusion models for modeling these processes.
Problems of automation of fresh fruits and vegetables storage processes
Authors: Malanchuk Yevhenii , Khrystyuk Andriy , Sych Vladislav
Published: October 2020

The article contains materials for the analysis of control systems for the process of providing conditions for storage of fresh fruits and vegetables. The analysis reveals the shortcomings of existing management systems and outlines ways for further development.
Dynamic and static load performance of dental biomaterial systems with conical implant-abutment connections
Authors: Basgil Mehmet Can , Kurtoglu Cem , Soygun Koray , Uslan Yunus , Demi̇r Teyfik
Published: October 2020

BACKGROUND: The stability of the implant-abutment interface is an important factor that influences load distribution on the marginal bone. OBJECTIVE: In this study, three dental implants with the same connection were subjected to different dynamic loading cycles. The fracture strengths and the horizontal compatibility of implants were assessed. METHODS: Eighty four implant specimens were embedded in a polyacetal cylinder as simulated bone loss of 3 mm from the implant platform. Three of the implants were used to determine the endurance limit. The other specimens were subdivided into four subgroups (n = 6): three for dynamic + static loading, and one for static loading (control group). The tests were performed by applying a compression load. The dynamic loading experiments included three different cycles with endurance upper limit loads at a frequency of 10 Hz. RESULTS: The differences between the fracture strength values of the implant brands were found to be statistically significant. However, there were no meaningful differences between the fracture strength values of implants of the same brand. The specimens of the DTI implant system had the lowest strength (647.9 ± 41.5 N) and the SEM analysis indicated that the Implantium implant system had the shortest horizontal gaps. CONCLUSIONS: There was a negative correlation between the fracture strengths and size of the microgaps. The importance of these in vitro results needs to be validated by clinical trials because the loads in the mouth can be applied from various angles.
Amyloid Hypothesis: The Emperor’s New Clothes?
Authors: Høilund-Carlsen Poul F. , Barrio Jorge R. , Werner Tom J. , Newberg Andrew , Alavi Abass
Published: October 2020

The lengthy debate on the validity of the amyloid hypothesis and the usefulness of amyloid imaging and anti-amyloid therapeutic interventions in dementia continues unabated, even though none of them have been able to convince the medical world of their correctness and clinical value. There are huge financial interests associated with promoting both, but in spite of the large sums of money in their support, no effective anti-amyloid treatments or diagnostic use of amyloid imaging have emerged. There are solid scientific reasons that explain these negative results, and it is time to move forward to other promising options for the benefit of the patients.
Genetic Factors of Alzheimer’s Disease Modulate How Diet is Associated with Long-Term Cognitive Trajectories: A UK Biobank Study
Authors: Klinedinst Brandon S. , Le Scott T. , Larsen Brittany , Pappas Colleen , Hoth Nathan J. , Pollpeter Amy , Wang Qian , Wang Yueying , Yu Shan , Wang Li , Allenspach Karin , Mochel Jonathan P. , Bennett David A. , Willette Auriel A.
Published: October 2020

Background: Fluid intelligence (FI) involves abstract problem-solving without prior knowledge. Greater age-related FI decline increases Alzheimer’s disease (AD) risk, and recent studies suggest that certain dietary regimens may influence rates of decline. However, it is uncertain how long-term food consumption affects FI among adults with or without familial history of AD (FH) or APOE4 (ɛ4). Objective: Observe how the total diet is associated with long-term cognition among mid- to late-life populations at-risk and not-at-risk for AD. Methods: Among 1,787 mid-to-late-aged adult UK Biobank participants, 10-year FI trajectories were modeled and regressed onto the total diet based on self-reported intake of 49 whole foods from a Food Frequency Questionnaire (FFQ). Results: Daily cheese intake strongly predicted better FIT scores over time (FH-: β= 0.207, p < 0.001; ɛ4–: β= 0.073, p = 0.008; ɛ4+: β= 0.162, p = 0.001). Alcohol of any type daily also appeared beneficial (ɛ4+: β= 0.101, p = 0.022) and red wine was sometimes additionally protective (FH+: β= 0.100, p = 0.014; ɛ4–: β= 0.59, p = 0.039). Consuming lamb weekly was associated with improved outcomes (FH-: β= 0.066, p = 0.008; ɛ4+: β= 0.097, p = 0.044). Among at risk groups, added salt correlated with decreased performance (FH+: β= –0.114, p = 0.004; ɛ4+: β= –0.121, p = 0.009). Conclusion: Modifying meal plans may help minimize cognitive decline. We observed that added salt may put at-risk individuals at greater risk, but did not observe similar interactions among FH- and AD- individuals. Observations further suggest in risk status-dependent manners that adding cheese and red wine to the diet daily, and lamb on a weekly basis, may also improve long-term cognitive outcomes.
Electromagnetically excited torsional vibration to rock drilling support
Authors: Trawiński Tomasz , Szczygieł Marcin , Tomas Arkadiusz
Published: October 2020

During a serious underground incident the most important things are the lives of miners and the time necessary for the rescue team to find victims of the accident. The paper presents the concept of a new drilling system that uses torsional vibrations in the drilling process. In the article formulating mathematical models of a drilling rig is one of the tasks of the INDIRES (INformation Driven Incident RESponse) project implemented as a part of the European Research Fund for Coal and Steel. The INDIRES project is dedicated to the task of conducting a rescue operation after accidents in mines.
e-NVH response synthesis of electric motors based on stator teeth FRF measurements
Authors: Pile Raphaël , Le Besnerais Jean , Devillers Emile , Degrendele Karine
Published: October 2020

The analysis of noise and vibrations under electromagnetic excitations (e-NVH) in electrical machines requires to study the stator mechanical response when excited by Maxwell stress waves. In particular, the notion of unit-wave Frequency Response Function (FRF) is often used in e-NVH simulations to model the mechanical response under electromagnetic excitations and troubleshoot noise issues. However, it is not possible to directly measure the unit-wave FRF on the electrical machines and validate the model. Instead, the Experimental Modal Analysis (EMA) is often compared to a Finite Element (FE) model in order to fit the numerical parameters (damping, boundary conditions, etc.). This paper is presenting a complementary approach to fully numerical e-NVH analysis. It is a new hybrid methodology based on experiments for the mechanical FRF and simulation for the magnetic excitations. This is performed with dedicated experimental measurements and post-processing. The new methodology builds an equivalent unit-wave FRF from experimental measurements. The methodology is validated with the diagnose of electromagnetic noise issues for an experimental benchmark Surface Permanent Magnet Synchronous Machine (SPMSM).
A comparative study of LC filter and damper winding for noise reduction of PWM-fed IM
Authors: Balavoine François , Bauw Grégory , Cassoret Bertrand , Romary Raphaël
Published: October 2020

In this paper, two passive solutions for noise reduction of PWM-fed induction machines are compared: the use of LC filter connected between the PWM inverter and the machine, and a three-phase damper wound inside the machine and connected to three capacitors. Firstly, the principle, advantages and disadvantages of each solution are recalled. The equivalent electrical circuits used for the study are also explained. Then, the effectiveness of both solutions in terms of voltage harmonic reduction and harmonic flux density reduction is discussed. The weight and size criteria are also studied. Results are given for two different power ranges of induction machines: 4 kW and 55 kW, and for two different switching frequencies of the PWM inverter: 3 kHz and 8 kHz.
Armature winding analysis for high-temperature superconducting PM-excited AC machines
Authors: Lasek Pawel , Habelok Krzysztof , Stepien Mariusz
Published: October 2020

The design considerations of AC machines with windings made of high-temperature superconductors (HTS) are presented in the following paper. The considerations were narrowed to permanent-magnet excited machines, although the results can be extrapolated to many other machine types as general guidelines. The influence of basic machine parameters and coefficients during the design of such machines are considered in order to estimate operating conditions of HTS windings. The number of poles, number of slots or slot dimensions, coil placement, and arrangement, are taken into account with the intent to fully utilize features of superconducting materials such as the capability of conducting high current density without significant losses. The attention is placed on low power machines, below 1 kW, operating at liquid nitrogen temperature (77 K). For analysis purposes, the finite element method (FEM) is used to calculate the distribution of the magnetic field and its effect on the critical current of the HTS coil. The numerical analysis is carried out in ANSYS software.
Design and analysis of a high speed double-sided axial flux permanent magnet motor suspended vertically by magnetic bearings
Authors: Güney Ömer Faruk , Çelik Ahmet , Bozkurt Ahmet Fevzi , Erkan Kadir
Published: October 2020

This paper presents the electromagnetic and mechanical analysis of an axial flux permanent magnet (AFPM) motor for high speed (12000 rpm) rotor which is vertically suspended by magnetic bearings. In the analysis, a prototype AFPM motor with a double-sided rotor and a coreless stator between the rotors are considered. Firstly, electromagnetic analysis of the motor is carried out by using magnetic equivalent circuit method. Then, the rotor disk thickness is determined based on a rotor axial displacement due to the attractive force between the permanent magnets placed on opposite rotor disks. Hereafter, an analytical solution is carried out to determine the natural frequencies of the rotor-shaft system. Finally, 3D finite element analysis (FEA) is carried out to verify the analytical results and some experimental results are given to verify the analytical and numerical results and prove the stable high-speed operation.
Error rate performance analysis of power domain NOMA over AWGN and fading channels with generalized space shift keying in wireless 5G
Authors: Murali K. , Siva Perumal S.
Published: October 2020

The Non-Orthogonal Multiple Access (NOMA) emerged as a latest solution to demand of high data rated with excellent reliability and robustness. In this paper, the performance analysis of the NOMA under fading channel is presented with emphasis on error rate calculations. In addition, the focus is on exploring the impact of various modulation techniques like binary phase shift keying (BPSK), Quadrature Phase Shift Keying (QPSK) and Generalized Space Shift Keying (GSSK). The simulation study has been performed on MATLAB tool and results are analyzed efficiently in the metrics of NOMA.
Application of ray tracing algorithm based on intersection optimization in 3D interior design
Authors: Liu YuHan
Published: October 2020

Aiming at the problem that the current algorithm of lighting effect cannot achieve a good effect in 3D interior design, this paper proposes an algorithm based on multi algorithm fusion to realize lighting effect in 3D interior design. The algorithm first optimizes the intersection of patch, sphere and rectangle based on ray tracing algorithm, and then optimizes the optimization algorithm and the algorithm of lighting shadow at the same time, it is applied to the realization of lighting effect of 3D interior design. The simulation results show that the algorithm based on multi algorithm fusion is more ideal for the realization of 3D interior design lighting effect than the existing algorithm.
Basketball sports neural network model based on nonlinear classification
Authors: Duan Rongkai , Sun Pu
Published: October 2020

With the continuous innovation of science and technology, the mathematical modeling and analysis of bodily injury in the process of exercise have always been a hot and difficult point in the research field of scholars. Although there are many research results on the nonlinear classification of the basketball sports neural network model, usually only one model is used, which has certain defects. The combination forecasting model based on the ARIMA model and neural network based on LSTM can make up for this defect. In the process of the experiment, the most important is the construction of the combination model and the acquisition of volunteer data in the process of the ball game. In this experiment, the ARIMA model is used as the linear part of the data, and LSTM neural network model is used to get the sequence of body injury. The results of the empirical study show that: it is reasonable to divide the injury of thigh and calf in the process of basketball sports, which is very consistent with the force point of the human body in the process of sports. The results of the two models predicting the average degree of bodily injury for many times are about 0.32 and 0.38 respectively, which are far less than 1. The execution time of the program for simultaneous prediction on the computer is about 1 minute, which is extremely effective.