bluuebunny/crossref_metadata_2025 huggingface dataset:
The marginal causal effect of opium consumption on the upper gastrointestinal cancer death using parametric g-formula: An analysis of 49,946 cases in the Golestan Cohort Study, Iran
Authors: Mohammadi Neda , Alimohammadian Masoomeh , Feizesani Akbar , Poustchi Hossein , Alizadeh Ahad , Yaseri Mehdi , Mansournia Mohammad Ali , Sadjadi Alireza
Published: January 2021

Upper gastrointestinal (UGI) cancer, including esophageal and gastric, is one of the most common cancers in the world. Hence, the determination of risk factors of UGI helps to reduce the economic and social burden of this cancer in communities. In Iran, the consumption of opium because of its neighborhood with Afghanistan are considerable. In this study, we examine the causal effect of opium use on the time to UGI cancer death. Based on the Golestan Cohort Study (GCS) in northeastern of Iran, about 50000 adults were enrolled to the study for four years (2004–2008) and followed annually until July 2018. We used “parametric g-formula” to study the causal effect of opium use on the time to death due to UGI. In this study, the information of 49946 individuals due to missingness were analyzed. So the median of follow-up time was 144 months and the prevalence of opium use was 17% (about 8489 persons). During the follow-up period, 593 (1.2%) death from upper gastrointestinal cancer were reported. The study showed that the effect of opium use on the time to UGI death was statistically significant (adjusted risk-ratio based on parametric g-formula = 1.31, 95% CI: [1.04, 1.65]). Additionally, the Population Attributable Fraction (PAF) in UGI cancer deaths of opium use was estimated 5.3% (95% CI: [0.6%, 11.3%]). Our results showed a causal effect of opium use on the intensity of upper gastrointestinal cancer death.
Multiple roles of PP2A binding motif in hepatitis B virus core linker and PP2A in regulating core phosphorylation state and viral replication
Authors: Xi Ji , Luckenbaugh Laura , Hu Jianming
Published: January 2021

Hepatitis B virus (HBV) capsid or core protein (HBc) contains an N-terminal domain (NTD) and a C-terminal domain (CTD) connected by a short linker peptide. HBc plays a critical role in virtually every step of viral replication, which is further modulated by dynamic phosphorylation and dephosphorylation of its CTD. While several cellular kinases have been identified that mediate HBc CTD phosphorylation, there is little information on the cellular phosphatases that mediate CTD dephosphorylation. Herein, a consensus binding motif for the protein phosphatase 2A (PP2A) regulatory subunit B56 was recognized within the HBc linker peptide. Mutations within this motif designed to block or enhance B56 binding showed pleiotropic effects on CTD phosphorylation state as well as on viral RNA packaging, reverse transcription, and virion secretion. Furthermore, linker mutations affected the HBV nuclear episome (the covalently closed circular or CCC DNA) differentially during intracellular amplification vs. infection. The effects of linker mutations on CTD phosphorylation state varied with different phosphorylation sites and were only partially consistent with the linker motif serving to recruit PP2A-B56, specifically, to dephosphorylate CTD, suggesting that multiple phosphatases and/or kinases may be recruited to modulate CTD (de)phosphorylation. Furthermore, pharmacological inhibition of PP2A could decrease HBc CTD dephosphorylation and increase the nuclear HBV episome. These results thus strongly implicate the HBc linker in recruiting PP2A and other host factors to regulate multiple stages of HBV replication.
Sistemas de captación e innovación en la formación del militar borbónico. Educación para la guerra
Authors: Herrero Fernández‑Quesada M.ª Dolores
Published: January 2021

El presente artículo trata de los sistemas de captación social y de educación militar en el xviii, que partió del acceso discriminatorio y se articuló sobre dos procedimientos que coexistieron para educar a los cadetes. El modelo fue desigual promoviendo oficiales con instrucción diferente, destacando los de la academia de ingenieros de Barcelona; de artillería en Barcelona y Cádiz, y de Segovia. En el universo de la educación para la guerra, se integraron efímeros centros con innovadores planteamientos docentes; alguno focalizado premonitoriamente para todos los oficiales. La documentación oficial es definitiva para el análisis en clave de balance, desde la perspectiva del mito de las reformas militares borbónicas. Como aportación de interés y complementaria acreditamos que la educación militar entró en el debate social, dando voz a un contemporáneo, Cadalso, militar y escritor que en El buen militar a la violeta… aborda la formación del oficial y su representación social, con lo que cerramos el círculo del conocimiento sobre el modelo de educación para la guerra de los ejércitos borbónicos.
Cotas Universitárias: Estudo do Desempenho Acadêmico na Graduação após a implementação da Política de Cotas na Universidade Federal de Uberlândia / University Quota Policy: Study of Academic Performance in Graduation Course after the implementation of the
Authors: Maximo Ricardo de Oliveira , Gandolfi Peterson Elizandro , Lopes José Eduardo Ferreira
Published: January 2021

As universidades sempre desempenharam papel formativo de extrema relevância social. Mas novas demandas sociais surgem exigindo condições mais inclusivas de acesso ao ensino superior de qualidade. Este trabalho objetivou analisar o desempenho acadêmico dos estudantes dos cursos de graduação presenciais da UFU após a implementação da Lei de Cotas. Foram analisados 7548 estudantes e 110 opções de cursos de graduação. Os resultados demonstraram que não cotistas apresentaram maior desempenho nas grandes áreas de Ciências Agrárias, Ciências Exatas e da Terra, Ciências Sociais Aplicadas, Engenharias, Linguística, Letras e Artes e Multidisciplinares. Já os cotistas obtiveram maiores desempenhos nas áreas de Ciências Biológicas, Ciências da Saúde e Ciências Humanas.
A Lei nº 12.711 de 2012 enquanto uma política afirmativa para acesso à educação superior: avanços e contratempos
Authors: Almeida Vitor Sergio de
Published: January 2021

Diante do amplo debate que a Lei 12.711 de 2012, popularmente alcunhada de “Lei de Cotas”, suscita na sociedade brasileira, da revisão normativa, a qual a presente política passará em 2022, e do crescente acesso dos setores vulneráveis da esfera social, física e étnica do país à educação superior desencadeado por ela, emergem alguns questionamentos, tais como: as ações afirmativas (denominadas também de “discriminações positivas”) são políticas originárias do Brasil? Os fins dessa lei encontram ressonância na Constituição Federal (CF) de 1988? Na contemporaneidade, essa política se efetiva como uma ação em prol de promover à (justiça social) igualdade de acesso ao ensino superior brasileiro? Os avanços são latentes, mas, há contradições em sua efetivação? Essas indagações, além de serem tratadas no presente manuscrito, fazem parte do escopo reflexivo suscitado pela leitura do livro “A política afirmativa na educação superior: contributos e dilemas do sistema de cotas da Lei nº 12.711/2012”, de Daniela de Melo Crosara , publicado pela editoria Lumen Juris, em 2018, com 300 páginas.
Effective Data Augmentation and Training Techniques for Improving Deep Learning in Plant Leaf Disease Recognition
Authors: Enkvetchakul Prem , Surinta Olarik
Published: January 2021

Plant disease is the most common problem in agriculture. Usually, the symptoms appear on leaves of the plants which allow farmers to diagnose and prevent the disease from spreading to other areas. An accurate and consistent plant disease recognition system can help prevent the spread of diseases and save maintenance costs. In this research, we present a plant leaf disease recognition system using two deep convolutional neural networks (CNNs); MobileNetV2 and NasNetMobile. These CNN architectures are designed to be suitable for smartphones due to the models being small. We have experimented on training techniques; online, offline, and mixed training techniques on two plant leaf diseases. As for data augmentation techniques, we found that the combination of rotation, shift, and zoom techniques significantly increases the performance of the CNN architectures. The experimental results show that the most accurate algorithm for plant leaf disease recognition is NASNetMobile architecture using transfer learning. Additionally, the most accurate result is obtained when combining the offline training technique with data augmentation techniques.
Natural and Synthetic Antioxidants Prevent the Degradation of Vitamin D3 Fortification in Canola Oil during Baking and In Vitro Digestion
Authors: Goebel Sebastian , Avallone Sylvie , Detchewa Pakkawat , Prasajak Patcharee , Sriwichai Wichien
Published: January 2021

Vitamin D insufficiency is widespread in the northern and partly equatorial hemisphere countries. Fortification of vitamin D in commonly consumed vegetable oils can prevent rickets in children, osteoporosis and bone fractures in adults. Avoiding the loss of vitamin D3 fortification in oils during cooking is beneficial for consumer’s health. The aim of this work was to investigate the stability of cholecalciferol (vitamin D3) fortification in canola oil during baking at 80 to 230°C for 10 to 40 min. The natural antioxidants (β-carotene and α-tocopherol) and the synthetic ones (butylated hydroxytoluene (BHT) and tert-butylhydroquinone (TBHQ)) were used to prevent the degradation of vitamin D3. The kinetic degradation of vitamin D3, oxidative status of canola oil and the bioaccessibility in in vitro digestion were assessed. Vitamin D3 was relatively stable at 80 and 130°C for 10 to 40 min. High temperatures of 180 and 230°C caused the highest loss of vitamin D3 being up to 90%. Reaction rate of vitamin D3 degradation ranged from 2.01 to 6.80 × 10–2 sec–1. BHT and TBHQ had the highest antioxidant activity (> 50 %) to decrease the degradation of vitamin D3 at 230°C. The oxidative status (peroxide value, malondialdehyde content) of canola oil was improved after incorporating antioxidant agents. The vitamin D3 bioaccessibility was increased 1.5 fold after in vitro digestion. The consumption of 5 g brownie containing vitamin D3 100 μg/L and antioxidant agents 180 mg/L in 1 mL of canola oil would cover the daily intake.
The Effects of Wages and Welfare Facilities on Employee Productivity: Mediating Role of Employee Work Motivation
Authors: Alam Mohammad Nurul , Hassan Md Mahmudul , Bowyer Dorothea , Reaz Md
Published: January 2021

Purpose- Garment employee productivity in Bangladesh is the lowest compared to its competitors such as China, India, Pakistan and Sri Lanka. The Bangladeshi Ready-Made Garment (RMG) industry will find it a challenge to survive in the global market unless they improve employee productivity. Therefore, the primary purpose of this study was to observe the relationship among wages and benefits, welfare facilities, employee work motivation and employee productivity. Design/Methodology/Approach- The study was conducted under the positivism philosophy for which Maslow’s Hierarchy of Needs Theory was used for framing the hypotheses. A deductive approach, explanatory research design and a quantitative methodology was followed in order to conduct the study. Through a questionnaire survey, twenty-five items were taken from existing literature to measure the variables. By a systematic probability sampling technique, 500 samples were collected from the target population. Thereafter, SPSS and SEM using Smart-PLS were utilised for analysing and developing the model. Findings- The outcome of the analysis revealed that all seven hypotheses were supported. Practical Implications- These findings will assist the policymakers, the government of Bangladesh, factory owners, managers and other stakeholders to formulate new policies and practices. Originality/Value- This study explores the relationship among wages and benefits, welfare facilities, employee work motivation and employee productivity which has not been explored theoretically and tested empirically in a Bangladeshi context. In the future, comparative research can be carried out by collecting samples from the EPZ (Export Processing Zone) and non-EPZ factories.
Quality of Independent Expert Reports Used in Australian Takeovers
Authors: Mazzola Paul , Gerace Dionigi , Reich Adam
Published: January 2021

In this article, the authors investigate whether there has been an improvement in the quality of independent expert reports following ASIC's revisions to RG111 and RG112. These revisions include additional disclosures on the valuation methodologies used and explanation if the valuation was materially different from the company's recent trading price. It was expected that these revisions have led to an improvement in report quality where quality is determined by the accuracy of the expert's valuation. Results show that after the 2011 revisions, valuations became more accurate based on updated measures of report quality. However, experts with higher fees did not provide higher quality reports on average. The ﬁndings indicate that the independence provisions within the new rules were effective. Furthermore, they warn commissioning firms that higher fees are not necessarily indicative of higher quality reports.
Чешский фразеологизм modré pondělí ‘синий понедельникʼ на иноязычном фоне: от архаики до неологии
Authors: Danilenko Ljudmiła
Published: January 2021

Статья посвящена вопросу о происхождении чешского фразеологизма modré pondělí ʻсиний понедельникʼ в двух его значениях: архаическом ʻне работать в понедельникʼ и новом ʻсамый депрессивный день в годуʼ. Благодаря изучению документов и работ по истории ремесел в Богемии, а также диалектной лексики выясняются истоки обычая. Автор развивает этимологическую гипотезу братьев Гримм. Название „синий” связано с обрядами средневекового карнавала перед началом Великого поста. Впервые проводится сопоставление с традицией свободного от работы понедельника, которая существовала в украинской народной культуре только для замужних женщин, причем это право оговаривалось в брачном договоре. На основе совокупности лингвистических, исторических и этнографических данных автор приходит к выводу, что общий для германцев и славян мотив „синего понедельника” развивался дважды: в одном случае как фрагмент средневековой традиции, а в другом – как элемент современного маркетингового приема с учетом символики синего цвета и суеверного представления о понедельнике как тяжелом дне недели.
Axiologie koronavirových antipřísloví
Authors: Mokienko Valerij , Nikitina Tatjana
Published: January 2021

Studie analyzuje současná česká přísloví, která charakterizují nejnovější dramatický fenomén lidského života – pandemii a koronavirovou karanténu. Česká lidová mluva na tento fenomén reaguje vtipně ironickými antifrázemi, které se stávají jakousi paremiologickou vakcínou proti Covid-19. Přes veškerou originalitu těchto transformací je většina z nich vytvořena na základě slovanského a celoevropského paremiologického fondu. Článek identifikuje zdroje koronavirových parémií, navrhuje jejich frekvenci, plošnou a axiologickou klasifikaci.
Puberty and fertility in classic galactosemia
Authors: Flechtner Isabelle , Viaud Magali , Kariyawasam Dulanjalee , Perrissin-Fabert Marie , Bidet Maud , Bachelot Anne , Touraine Philippe , Labrune Philippe , de Lonlay Pascale , Polak Michel
Published: January 2021

Classic galactosemia is a rare inborn error of galactose metabolism with a birth prevalence of about 1/30,000–60,000. Long-term complications occurring despite dietary treatment consist of premature ovarian insufficiency (POI) and neurodevelopmental impairments. We performed with the French Reference Centers for Rare Diseases a multisite collaborative questionnaire survey for classic galactosemic patients. Its primary objective was to assess their puberty, pregnancy, gonadotropic axis, and pelvic morphology by ultrasound. The secondary objective was to determine predictive factors for pregnancy without oocyte donation. Completed questionnaires from 103 patients, 56 females (median age, 19 years (3–52 years)) and 47 males (median age, 19 years (3–45 years)), were analyzed. Among the 43 females older than 13 years old, mean age for breast development first stage was 13.8 years; spontaneous menarche occurred in 21/31 females at a mean age of 14.6 years. In these 21 women, 62% had spaniomenorrhea and 7/17 older than 30 years had amenorrhea. All age-groups confounded, FSH was above reference range for 65.7% of the patients, anti-Müllerian hormone and inhibin B were undetectable, and the ovaries were small with few or no follicles detected. Among the 5 females who sought to conceive, 4 had pregnancies. Among the 47 males, 1 had cryptorchidism, all have normal testicular function and none had a desire to conceive children. Thus, spontaneous puberty and POI are both common in this population. Spontaneous menarche seems to be the best predictive factor for successful spontaneous pregnancy.
Segunda parte. Experiencias locales en medio ambiente y sostenibilidad. Capítulo 6. Alternativas para el desarrollo sostenible de la zona de reserva campesina. Municipio de Cabrera - Cundinamarca
Authors: José Amando Hernández Bernal , Laura Natalia Castiblanco Roa , Alejandra Del Pilar Castillo Lozano
Published: January 2021

La condición socioeconómica y de distribución de tierras en Colombia, sumada al conflicto armado, a lo largo de la historia ha desencadenado una serie de afectaciones para la población rural ocasionando un evidente estancamiento del desarrollo en el sector agricultor; sumado a esto, las formas de financiamiento ofrecidas por el Estado pueden llegar a ser inadecuadas e ineficientes para el impulso de este sector. En vista de lo anterior, se realiza un análisis de las formas de financiación estatal ofrecidas al sector agricultor a nivel nacional, y a partir de esto, se evaluará el mecanismo crediticito idóneo para otorgar a los campesinos ubicados en zona de reserva campesina de Cabrera, Cundinamarca (en adelante ZRC) teniendo en cuenta las características demográficas, económicas y crediticias de dicha población. La ZRC ubicada en Cabrera ocupa una posición privilegiada en cuanto a ubicación geoestratégica en donde existen ecosistemas con microclimas especiales que favorecen el cultivo de variedades importantes de frutas, hortalizas y leguminosas; para este caso el municipio de Cabrera cuenta con el mejor nivel de producción de Fríjol de la región ocupando alrededor del 35% (Argenti, Jaller R, & Rodríguez Reyes, 2011) de las parcelas disponibles para cultivo, además también se cultiva habichuela, arveja y algunas variedades de tomate y frutas. Por otro lado, en Cabrera el promedio de hectáreas destinadas para cultivos en cada finca son un alrededor del 2,45 hectáreas equivalente a un 24,1% de la extensión de las mismas frente a un 6,31 hectáreas destinadas a la ganadería, aspecto que representa la realidad nacional en donde la producción ganadera cuenta con un mayor destino en la cuantía de hectáreas respecto a la agricultura (INCODER - ILSA, 2013); resaltando las características económicas de la población resulta eficiente y probable el acceso a financiación de procesos agrícolas.
STUDIO SULLA STABILITÀ DELLE VOLTE CATALANE DELLE SCUOLE D’ARTE DE LA HABANA (CUBA): ¿UN SINGOLARE CASO DI APPROSSIMAZIONE COSTRUTTIVA?
Authors: Paradiso Michele , Galassi Stefano , Garuglieri Sara , Zecchin Christian
Published: January 2021

Le Scuole Nazionali d’Arte (Escuelas Nacionales de Arte) de L’Avana, Cuba, restano a tutt’oggi, malgrado lo stato di alto degrado in cui versano, l’esempio più emblematico dell’uso delle bóvedas tabicadas in una architettura modernista. Splendido esempio di architettura organica, furono progettate, nei primi anni ’60 del secolo scorso, su incarico del governo rivoluzionario cubano, dagli architetti italiani Roberto Gottardi e Vittorio Garatti, e dal cubano Ricardo Porro. Consistono in 5 complessi edificati, per una superficie totale di 65.000 mq immersi in un parco naturale di 600.000 mq, dedicate all’insegnamento della danza, della musica, dell’arte teatrale, delle arti plastiche del balletto. Particolarmente disinvolta nell’uso della tecnica catalana o valenziana è la Scuola di Balletto, dove la monta ribassata delle volte doveva permettere, per volontà del progettista Vittorio Garatti, di essere percorribili e vissute anche in estradosso. Nella zona dell’ingresso, la perdita dell’ultimo folio estradossale a causa dell’incuria ed atti di vandalismo, ha suggerito una verifica numerica del suo grado di stabilità, utilizzando la Teoria di Heyman. Si è verificato il sistema voltato, nello stato precario in cui versa attualmente, sia a peso proprio, sia a folla compatta concentrata nella zona di chiave, dimostrando così una perdita di stabilità del 30%, che suggerisce la necessità di un pronto intervento di messa in sicurezza e successivo consolidamento.
Agro morphological Characterization and Evaluation of Okra [Abelmoschus esculentus (L.) Moench] Genotypes for Yield and Other Variability Components at Melkassa, Central Ethiopia
Authors: Temam Nesru , Mohamed Wassu , Aklilu Shimelis
Published: January 2021

Okra [Abelmoschus esculentus (L).Moench] is one of indigenous and endemic genetic resource of Ethiopia as well as Benishangul Gumuz, but only few studies were carried out to assess its diversity and performance throughout the country and specifically no research conducted to assess diversity of okra within regional state. Therefore, this study was conducted with the objective of assess the genetic divergence and estimate the genetic variability components in okra genotypes collected from regional state. A total of 36 genotypes were evaluated of which 33okra genotypes were collected from different areas of Benishangul Gumuz Regional State, 3(three) checks, of 2 introduced and 1(one) released were evaluated for 27 quantitative traits at MARC in year 2018/19 using simple lattice design (6x6). The results from analysis of variance revealed that the presence of significant variation for all quantitative traits except 3 traits. Moreover, the variation of genotypes for fruit yield per hectare ranged from 9.44 to 32.88ton/ha-1 with mean 19.59ton/ha-1 for genotypes 29620 and 29618, respectively. Most of genotypes had high mean performance as compared to checks for majority of traits. The genotypic (GCV) and phenotypic (PCV) coefficient of variation showed within range of 6.3 to 54.19% and 9.19 to 55.51%, respectively. Heritability in broad sense (H2) and genetic advance as percent of mean (GAM) had ranged from 43.46 to 97.34% and 9.16 to 109.14%, respectively. The variability components (GCV, PCV, H2 and GAM) were high for all traits except few traits like days to 90% maturity, hundred seed weight low in PCV and GCV. Number of ridge and hundred seed weight showed moderate H2 whereas days to 90% maturity, number of ridge and percentage of mucilage content had moderate GAM and low for hundred seed weight. The result observed in this study was the presence of a wide genetic variation among genotypes collected from Benishangul Gumuz Regional State.
Logical consequence relations in logics of quasiary predicates
Authors:   Kiev Taras Shevchenko National University, Shkilniak O.S.
Published: January 2021

Logical consequence is one of the most fundamental concepts in logic. A wide use of partial (sometimes many-valued as well) mappings in programming makes important the investigation of logics of partial and many-valued predicates and logical consequence relations for them. Such relations are a semantic base for a corresponding sequent calculi construction. In this paper we consider logical consequence relations for composition nominative logics of total single-valued, partial single-valued, total many-valued and partial many-valued quasiary predicates. Properties of the relations can be different for different classes of predicates; they coincide in the case of classical logic. Relations of the types T, F, TF, IR and DI were in-vestigated in the earlier works. Here we propose relations of the types TvF and С for logics of quasiary predicates. The difference between these two relations manifests already on the propositional level. Properties of logical consequence relations are specified for formulas and sets of formulas. We consider partial cases when one of the sets of formulas is empty. It is shown that relations P|=TvF and R|=С are non-transitive, some properties of decomposition of formulas are not true for R|=С, but at the same time the latter can be modelled through R|=TF. A number of examples demonstrates particularities and distinctions of the defined relations. We also establish a relationship among various logical consequence relations.
Analytical review on information retrieval methods and applications in the Semantic Web
Authors:   Institute of Software Systems NAS of Ukraine, Grishanova I.J.
Published: January 2021

The article describes and analyzes the Information Retrieval (IR) methods and applications in the environment of Semantic Web. The author provided the basic Information Retrieval concepts, problems, models and classification of IR systems on various grounds. Examples of existing modern search engines, as well as highlighted the stages of development and listed a list of functional and architectural features of 3-rd search engines generation. The proposed model of IR extends the classification of search engines and search model with the possibility of finding new objects that have become available in the web, and use knowledge represented in the Semantic Web.
Methods and Models for Employment of the Expert Analytical Knowledge in Organization Decision Making. Part I. Decisions Knowledge Models
Authors:   Institute of Software Systems NAS of Ukraine, Ilina E.P.
Published: January 2021

The paper is devoted to the formal representation of the organization decision by providing of the special kind of the organization knowledge models. Being employed in the organization information system these models give an ability for reusing of organization experience. Moreover they help to support analytical operations for quality man-agement of organization decisions and decision making processes. The main components of the proposed knowledge models system are the Ontological Model for Decisions Support and the Decision Field of Organization. First of them includes such the categories of concepts as Gall, Gall Tree, Operation, Problem Situation, Side Influence, Decision, Package of Decisions, Value, Value tree. Their models are represented as the systems of the partial definitions for the concept that belong to the certain category and the set of rules for interpretation of each role position in such partial definition. Incomplete conceptual knowledge may be also represented in these models. Models proposed may be used for representation of the Organization Decisions Field and for constructing the mechanism of its analysis that is a subject of the next part of this article.
ELECTROMAGNETIC PROCESSES IN A FLAT RECTANGULAR SYSTEM WITH AN INDUCTOR BETWEEN THIN BIFILAR COILS
Authors:   Kharkiv National Automobile and Highway University, 25, Yaroslava Mudruho Street, Kharkiv, 61002, Ukraine, Batygin Yu.V. , Shinderuk S.O. ,   Kharkov National Automobile and Highway University, 25, Yaroslava Mudroho st., Kharkiv, 61002, Ukraine, Yeryomina O.F. ,   Kharkov National Automobile and Highway University, 25, Yaroslava Mudroho st., Kharkiv, 61002, Ukraine, Chaplygin E.A. ,   Kharkiv National Automobile and Highway University, 25, Yaroslava Mudruho Street, Kharkiv, 61002, Ukraine
Published: January 2021

The aim of the research is the analysis and evaluation of the electromagnetic processes characteristics in the proposed flat rectangular system consisting of a thin solenoid-inductor located between the branches of the bifilar, thin-walled multi-turn coils. The analysis of electromagnetic processes and the obtained estimates of the excited currents are carried out. It is shown that with a minimum gap between the windings of the solenoid-inductor and the bifilar, the time functions of the exciting current and the current induced in the bifilar windings are the same, and the amplitude of the latter is maximum and equal to half the current amplitude in the inductor. It was found that the proposed system has a practical invariance of the time shape and amplitude of the induced current in a wide range of variable geometric parameters. The minimal effect of the fields of induced currents on the processes in the solenoid-inductor and the minimum losses when removing the induced signal from the bifilar windings are noted. Physically, the first is due to the asymmetry of the excited magnetic field relative to the plane of the solenoid-inductor, the second is due to a significant decrease in spurious inter-turn capacitance due to the thinness of the bifilar windings. The obtained results allow us to give practical recommendations when choosing design solutions for elements of new circuits of equipment for magnetic pulse metal processing. References 14, figures 2.
EVOLUTION OF THE ELECTROMAGNETIC RAILGUN
Authors:   National Technical University of Ukraine ", Vaskovskyi Ju.M. ,   Igor Sikorsky Kyiv Polytechnic Institute",   , pr. Peremohy, 37, Kyiv, 03056, Ukraine, Raichev P.O. ,   National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", pr. Peremohy, 37, Kyiv, 03056, Ukraine
Published: January 2021

In the present article, the analytical overview of the worldwide modern approaches to the development of electromagnetic railguns (RG) was carried out. The major physical effects in the RG were analyzed, and the corresponding ways of increasing the RGs efficiency were showed up. Considering the wide range of the proposed ER configurations, their generalization and comparative analysis is highly needed. Thus, the comparison of the most advanced configurations of the ER - conventional RG, augmented, multi-turn, and multistage segmented RG was carried out. Finally, the variation of the multistage segmented RG, proposed by authors, has been described. This type of ER allows for the sufficient decrement of the ERs resistance by splitting the rails on mutually insulated segments, and commutating those segments without additional control equipment, but only by synchronized movement of the armature. References 15, figures 8.
IDENTIFICATION OF MATHEMATICAL MODEL OF TURBINE GENERATOR UNIT IN PRESENCE OF UNCERTAINTY
Authors:   National University of Food Technologies, Volodymyrska str, 68, Kyiv, 01601, Ukraine, Baliuta S.M. , Chernenko P.O. ,   Institute of Electrodynamics National Academy of Sciences of Ukraine Peremohy, 56, Kyiv, 03057, Ukraine, Kuievda Iu.V. ,   National University of Food Technologies, Volodymyrska str, 68, Kyiv, 01601, Ukraine, Kuevda V.P. ,   National University of Food Technologies, Volodymyrska str, 68, Kyiv, 01601, Ukraine
Published: January 2021

An identification procedure of mathematical model of turbine generator unit in the presence of uncertainty is studied for using in the interconnected robust control automated system. The procedure is based on “worst-case” identification approach. The controlled object is modelled by the matrix transfer function with additive uncertainty. The identification consists of two stages: first is to identify transfer function with nominal parameters with the use of prediction error minimization algorithm, second – to determine weight function in additive uncertainty model using finding the worst-case log-magnitude curve of uncertainties. Identification is performed in active way, determining datasets for each control channel from individual experiments. A linear frequency-modulated signal is selected as the input test disturbance. A simulation model of the controlled object is constructed and the numerical experiment is conducted using the identification procedure. References 11, figures 7.
RENEWABLE SOURCES IN THE ENERGY SUPPLY SYSTEMS OF UKRAINIAN CITIES
Authors:   The Gas Institute of NAS of Ukraine, 39 Degtyarivska Str., Kyiv, 03113, Ukraine, Karp I.M. , Nikitin Y.Y. ,   The Gas Institute of NAS of Ukraine, 39 Degtyarivska Str., Kyiv, 03113, Ukraine, Pyanykh K.Y. ,   The Gas Institute of NAS of Ukraine, 39 Degtyarivska Str., Kyiv, 03113, Ukraine
Published: January 2021

70% of the population of Ukraine lives in cities. Electric energy supply of cities with dense buildings is provided mainly from centralized generation sources: TPPs, CHPs, NPPs, RES, and heat energy - from CHPs and gas boilers. Possibilities of energy self-sufficiency of Ukrainian cities based on use of alternative and local energy sources are analyzed. There is a global trend of increasing share of RES in cities energy supply, especially in cities and districts with cottage development. Providing cities with their own energy resources can be achieved through integrated use of renewable and local sources. Production of electricity from renewable sources in terms of return on investment EROI and normalized energy cost over life cycle of LCOE generation source is close to traditional sources indicators. Examples of RES usage to meet energy needs of houses and settlements in Europe are given. High cost of renewable energy stimulates development of this area in Ukraine. Efficiency of renewable and local sources usage in buildings is achieved only with simultaneous introduction of energy saving measures - insulation of buildings, introduction of energy control systems. References 14.
THE USING OF CONTROLLED DEVICES FOR THE COMPENSATION OF CHARGING POWER ON EHV POWER LINES IN ELECTRIC NETWORKS
Authors:   Institute of Electrodynamics National Academy of Sciences of Ukraine Peremohy, 56, Kyiv, 03057, Ukraine, Tuhay Yu.I. , Kuchansky V.V. ,   Institute of Electrodynamics National Academy of Sciences of Ukraine Peremohy, 56, Kyiv, 03057, Ukraine, Tuhay I.Yu. ,   Institute of Electrodynamics National Academy of Sciences of Ukraine Peremohy, 56, Kyiv, 03057, Ukraine
Published: January 2021

It is shown that the use of controlled shunt reactors allows you to create FACTS-controlled power lines based on extra-high voltage power lines that meet the necessary requirements of modern energy systems to control normal conditions. The typical modes of operation of an ultra-high voltage power line with installed controlled shunt reactors are analyzed. The efficiency of using controlled shunt reactors to increase the reliability of single-phase auto-reclosing is shown. The issues of the appearance of an aperiodic component in the current when disconnecting the line of SF6 circuit breakers are considered. It is shown that the presence of a ferromagnetic core in controlled shunt reactors causes the appearance of transition resonance, which must be taken into account when designing the FACTS. References 10, figures 1, tables 1.
FAST ADAPTIVE PROTECTION AGAINST SHORT CIRCUITS IN MICROGRID ELECTRIC NETWORKS WITH DISTRIBUTED GENERATION
Authors:   National University of Life and Environmental Sciences of Ukraine, Heroyiv Oborony st., 15, Kyiv 03041, Ukraine, Grebchenko N.V. , Yeromenko Y.V. ,   National University of Life and Environmental Sciences of Ukraine, Heroyiv Oborony st., 15, Kyiv 03041, Ukraine
Published: January 2021

Protection against short circuits in microgrid networks with distributed generation is proposed, in which the power of the power sources and loads are constantly changing, which leads to a change in the sensitivity of relay protection. The response current of the proposed protection automatically adapts to the current value of the line operating current. The protection includes measures to block its action in the event of short-term interference in current circuits. Protection is installed on both sides of the line and protects the entire line, provides a stable mode of operation of the network due to the quick shutdown of short circuits. The algorithm of operation and the scheme for implementing protection are given. The protection operation was tested using the parameters of the real short circuit mode. References 7, figures 3.
TECHNICAL AND ECONOMIC ASSESSMENT OF THE RECONSTRUCTION OF THREE-PHASE ELECTRIC-ARC STEEL FURNACE
Authors:   Lviv National Agrarian University, 1, V.Velykoho str., Dubliany, 80381, Ukraine, Hudym V.I. , Kosovska V.V. ,   Lviv Polytechnic National University, S. Bandery, 12, Lviv, 79013, Ukraine, Yavorska N.P. ,   Lviv Polytechnic National University, S. Bandery, 12, Lviv, 79013, Ukraine, Danko T.I. ,   Lviv Polytechnic National University, S. Bandery, 12, Lviv, 79013, Ukraine
Published: January 2021

The technological units of electric arc steel remelting are among the most energy-intensive consumers for whom the problem of energy saving is extremely urgent. The proposed reconstruction of the electric-arc steel furnace is aimed at reducing the amount of electricity consumption. The feasibility study makes it possible to assess the technical and economic parameters of project of an electric-arc steel furnace reconstruction. The simulation results of the reconstructed electric furnace showed that due to the optimal placement of electric arcs in the electric furnace space, the duration of the metal melting stage can be reduced by approximately 19 min. Cost-effectiveness calculations for the implementation of the innovative solution showed that reducing the duration of steel remelting in a reconstructed furnace reduces the electricity consumption by approximately 28% per process. The article takes into account only the reduction of electricity consumption, but does not take into account the possibility of improving the productivity of the furnace by increasing the number of technological processes per shift. References 7, figures 3, table 1.
DIGITAL CONVERTERS METROLOGICAL SPECIFICATION FOR RESISTANT THERMAL THERMOSENSORS COMPARE
Authors:   Ukrainian Hydrometeorological Institute SES of Ukraine and NAS of Ukraine, 37, Nauky Ave., Kyiv, 03028 Ukraine, Latenko V.I. , Ornatsky I.A. ,   Ukrainian Hydrometeorological Institute SES of Ukraine and NAS of Ukraine, 37, Nauky Ave., Kyiv, 03028 Ukraine, Fil S.O. ,   Ukrainian Hydrometeorological Institute SES of Ukraine and NAS of Ukraine, 37, Nauky Ave., Kyiv, 03028 Ukraine, Zaitsev Ie.O. ,   Institute of Electrodynamics National Academy of Sciences of Ukraine Peremohy, 56, Kyiv, 03057, Ukraine
Published: January 2021

In this paper presents comparative metrological analysis of two options for connecting Pt100 resistive temperature sensors to high-precision analog-to-digital converters is carried out: a proportional circuit in which the reference resistor serves to form the reference voltage, and a canonical 4-wire circuit where the resistance of the reference resistor is measured in the same way as the resistance of the temperature sensor are presented. It is shown that the error of the one-stroke proportional circuit is determined by the long-term instability of the gain, while the resulting error of the push-pull canonical circuit is determined by the short-term instability of several elements. The insignificant advantage of the canonical circuit with the accuracy of conversion and in the absence of additional requirements for the input of the reference voltage is affirmed, which gives recommendations for the practical application of the circuits considered in meters of temperature. References 10, figures 2, table 1.
Конституционные Права Работников На Правовую Защиту И Определенность (Constitutional Rights of Workers in Obtaining Protection and Legal Certainty)
Authors: Yunus Nur Rohim , Rezki Annissa , Anggraeni RR Dewi
Published: January 2021

Abstract:There are so many conflicts between companies and workers, and these conflicts often end up in court. At certain moments workers are declared winners and the company is obliged to pay the right to obligations as a provider of labor. Workers hope to receive all rights and be protected by law which can overshadow and protect the existence of workers, both individually and as a group. This research uses descriptive qualitative research methodology and refers to the 1945 Constitution of the Republic of Indonesia as the main legal foundation and other laws and regulations.Keywords: Legal Protection, Constitutional Rights, Workers' Rights Аннотация:Существует много конфликтов между компаниями и работниками, и эти конфликты часто заканчиваются в суде. Бывают случаи, когда работники объявляются победителями, и компания обязана оплачивать права по обязательствам как работодатель. Рабочие надеются получить все свои права и быть защищены законом как индивидуально, так и в составе группы. В этом исследовании используется описательно-качественная методология исследования и упоминается Конституция Индонезии 1945 года в качестве основного правового закона и другие законодательные акты, представленные ниже.Ключевые слова: Правовая защита, Конституционные права, Права работников
Friedrich Nietzsche about “the Free Minds”
Authors: Meshkov Vaycheslav M.
Published: January 2021

Introduction. The theme of “free minds”, which Nietzsche developed during his philosophical career, occupies an important place in his creative heritage. In a sense, it is a further development of Plato’s doctrine of the “true philosopher”, the bearer of exemplary piety and reason. By means of mental constructs “free mind”, “knowing man”, “theoretical man”, “free philosopher”, “Zarathustra” F. Nietzsche not only deeply and fully showed the creative principle of creative personalities, but also revealed the complex, sometimes their tragic life, because he often wrote about himself. The aim of the study is to trace the meaningful evolution of this important topic in the philosophy and life of the German philosopher. Materials and Methods. The works of F. Nietzshe served as the source of the research. In the course of the work, the method of thematic cultural analysis was used, which makes it possible to track the meaningful development of the main philosophical themes, their semantic interrelationships in the conceptual constructions of the philosopher. And also, the method of existential-transcendental analysis was used, with the help of which the opportunity opened up to study the living conditions and spiritual aspirations of the German philosopher. Discussion. “Free minds” always have to prove their right to exist. Unlike “bound minds”, they should strive to free themselves from petty connections and relationships in everyday life. In the guise of Zarathustra, F. Nietzsche created an almost ascetic image of a “free mind” that “scorched by the sun” in the desert, “hungry, strong and lonely” “breaks his heart”. If for Plato the highest ability of a person was his mind, which provided transcendental knowledge of metaphysical being, then for F. Nietzsche this was the volitional principle. Surviving the “great break” is a universal law for all “free minds” discovered by Nietzsche. He captured the moment of the “birth” of the “free mind”, the initial impulse, which will largely determine his further life path. Spiritual loneliness and independence are an indispensable condition for the life of a “free mind”. The last phase in the formation of a “free mind” is the realization of his fate as a lonely wanderer, destined and doomed to create new truths, values and ideas. Results. The great philosopher F. Nietzsche has always been a transcendental person, a genuine “free mind”, which predetermined the depth of his philosophical thought. In the last years of his philosophical activity, nihilistic attitudes began to gain strength, which led to an exacerbation of the conflict in his psyche. Therefore, the doctrine of the “free mind” is one of the main philosophical achievements of Friedrich Nietzsche.
Equal Release Vector as a Method of Studying Industrialization (based on the materials of the Russian iron ore industry of the late 19th – early 20th centuries)
Authors: Shumkin Georgy N.
Published: January 2021

Introduction. In modern historiography industrialization is defined as the process of replacing labor with machine technology, but in applied research, machine technology for workers acts not as a substitute, but as a complementary good that increases labor productivity. This contradiction between the definition and research results is due to the limitations of the methods used. Materials and Methods. As a tool to overcome these limitations, the author of this paper suggests using the equal release vector method, developed by him on the basis of the well-known model of the isoquant and producer equilibrium in economic theory. The purpose of this work is to test the heuristic potential of this method on the material of the iron ore industry of the Urals, Poland and Southern Russia in the late 19th – early 20th centuries. Results. The study found that the equal release vector gives a clear idea of the periods when resources replace and complement each other, and also revealed the advantages and disadvantages of the equal release vector method. Its advantages include the fact that it provides a visual representation of changes in the amount of resources per unit of output, is easy to learn, and can be used to analyze technological transformations of both an individual enterprise and the entire industry. Its disadvantages include high sensitivity to the quality of the source and completeness of data. This method should only be used as an addition to the traditional analysis of absolute and average indicators. It allows you to analyze the interaction of only two resources.
The Law of Movement and a Methophr of Gemeinschaftsgefühl: What is the Essence of the Law of Movement?
Authors: Bluvshtein Marina
Published: January 2021

Тhe article shares ideas about concepts of Adlerian psychology related to the psychological movement of an individual and as a part of the community. The author looks through the important ways metaphors enrich our communication and allow a holistic way of experiencing our movement. The concept of Gemeinschaftsgefühl being at “the heart” of our movement and our ways of overcoming obstacles and challenges. Understanding the patterns, learning about our goals and the choice we have within the natural movement is pivotal to human development.
The Emotional Style of the Modern Parent in the Conditions of the COVID-19 Pandemic
Authors: Uzunova Veneta
Published: January 2021

In a pandemic, the child-parent relationship is facing new challenges. Social isolation affects people differently, but a sustainable internal psychological resource allows the individual to get out of the critical period with as little damage as possible. Healthy emotionality is a basic prerequisite for the formation and development of emotional intelligence. The identification of the emotion, the control over the impulse and its expression in a socially acceptable way by the parent - all this is inextricably linked with the process of upbringing in the family and marks the nature of the relationship between parents and children. The study focuses on the study of the emotional style of the modern parent in the context of his interaction with the children in the family. The emotional style questionnaire used by a team from the University of Wisconsin-Madison was used. The survey was conducted among parents of children and students from 3 to 18 years. Conclusions were made regarding the specifics of the emotional style of the parents in the context of the established state of emergency and in connection with pedagogical activities aimed at creating conditions for increasing the emotional intelligence of the respondents with the support of the school.
Fatigue and Health Behaviour of Ill Youth from Rural and Urban Areas
Authors:   Doctor, Uniwersytet Marii Curie-Skłodowskiej w Lublinie, Wydział Pedagogiki i Psychologii, Instytut Pedagogiki, Katedra Metodologii Nauk Pedagogicznych, Polska, Duda Marlena
Published: January 2021

The issue of chronic diseases in the population of children and youth should be constantly monitored due to the dynamically changing conditions of life. The risk of health deterioration and the process of convalescence are related to negative health behaviours, the feeling of fatigue and lowering quality of life. These phenomena are determined by the type of disease, individual decisions and many other factors of social nature: support, place of residence or income. The aim of this paper is to analyse the feeling of fatigue and health behaviours declared by youth in the period of late adolescence.