bluuebunny/crossref_metadata_2025 huggingface dataset:
Peculiarities of management of endometrioid ovarian cysts in patients of reproductive age
Authors:   SI «Zaporozhzhia medical Academy of postgraduate education Ministry of health of Ukraine», Shapoval O.S. , Vorontsova L.L. ,   SI «Zaporozhzhia medical Academy of postgraduate education Ministry of health of Ukraine»
Published: December 2020

The wide spread of endometriosis disease, absence of the onset of a period of stable remission, high frequency of recurrence of the disease cause the existing problems of management of endometriosis. The objective: to study the effectiveness of various treatment regimens for endometriomas in patients with previously realized reproductive potential. Materials and methods. 44 women aged 17 to 49 years were examined: the first group consisted of 25 healthy nonpregnant women, the second group included 19 women, with endometriomas receiving the traditional (subgroup 2a) and complex (subgroup 2b) treatment. Results. It was revealed that in patients receiving traditional therapy, at the end of the course of treatment, the initial activation of the humoral unit of the immune system was observed, which indicated the need for immunocorrection. In patients receiving complex therapy, normalization of the body’s immune homeostasis, stabilization of the processes of apoptosis and proliferation, the main links in the etiopathogenesis of endometriosis, was noted, which indicated an improvement in the effectiveness of the treatment. The control ultrasound in the dynamics at 1 and 3 months in patients who continued to receive complex therapy, revealed a decrease in the size of pathological formation and a pronounced antiproliferative effect on the hyperplastically altered endometrium, diagnosed before the start of treatment in 21,05% of patients. After 3 months of treatment, there was no need for an endometrial biopsy in this group of patients. Conclusions. With the use of a comprehensive approach to the treatment of endometriomas normalization of the body’s immunodeficiency parameters, regression of the endometriomas and the absence of hyperplastic endometrial processes are noted, which allows to recommend this scheme for further use. Key words: endometriosis, reproductive age, immunodiagnostics, ultrasound, immunotherapy.
Influence of a method of treatment autoimmune thyroid gland pathologies on reproductive function of women
Authors:   Shupyk National Medical Academy of Postgraduate Education, Kyiv, Beraja D.J.
Published: December 2020

The objective: to study influence of various methods of treatment of autoimmune diseases on genesial function of women. Materials and methods. Was made the analysis of various methods of treatment illness of Greyvsa at 103 women. Besides, the screening assessment of pathology thyroid gland was carried out made at 298 women with sterility (the main group) and at 50 women who have addressed in clinic for selection of a method of contraception (control group). Selection of patients was carried out by the opened method in process of the address of patients with sterility in unit of conservation and restoration of reproductive function. Questioning is carried out at 205 women with sterility. Examination of patients with sterility was conducted according to the standard diagnostic algorithm, including endoscopic methods, and treatment – depending on the established reasons of sterility. Results. The analysis of dependence of reproductive outcomes from the used method of treatment аутоиммунной thyroid gland pathologies has shown that optimum reproductive outcomes are noted after therapy carrying out by radioactive iodine and thyroidectomy, and the least favorable – after thyroidstatical therapies. The data obtained by us testifies to the raised prevalence autoimmune pathologies of thyroid gland at patients with barreness in comparison with fertilytical women with the established risk 2.1 (р <0.001), and also about the expressed communication between autoimmune thyroided and endometriosis as the reason of barreness and close association endocrinological barrenesses and hypothyreosise. High frequency of occurrence euthyreosis craw at women with barreness testifies to necessity of carrying out of individual iodic preventive maintenance to all women with barreness. Conclusion. The received results are necessary for considering by working out of algorithm of diagnostic and treatment-and-prophylactic actions. Key words: autoimmune thyroid gland pathology, treatment methods, reproductive function.
Case of sirenomelia in one infant from twins
Authors:   Danylo Halytsky Lviv National Medical University, Ukraine, Gyzha L.Y. , Stenyk R.V. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Pereyaslov A.A. ,   Danylo Halytsky Lviv National Medical University, Ukraine, Malovanyy B.Y. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Cherevan T.O. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Borova–Halay O.E. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Potsyrko A.R. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Hrymak I.Y. ,   Lviv regional children’s clinical hospital «OXMATDYT», Ukraine, Kytov V.J. ,   Lviv regional pathological anatomical bureau, Ukraine
Published: December 2020

Sirenomelia is extremely rare congenital malformation that characterized by the complete or incomplete fusion of the low extremities and associated by the various organs’ disorders, such as urinary system, which determined the poor outcome in these infants that died during antenatal or early neonatal period. Prenatal ultrasonography, especially during first-second trimester, permits to establish the presence of sirenomelia. Due to the rarity of this malformation, the own observation of first case of sirenomelia in one infant from twins is presented, which borne in Ukraine. Diagnosis of sirenomelia was established at the planned ultrasonographic screening of multigravida mother. After the birth, neonate with sirenomelia was transferred at the intensive care unit of Lviv regional children’s clinical hospital «OXMATDYT». At the first examination, the throughout fusion of lower extremities, the absent of one kidney, bladder, and external genitalia was revealed. With increasing signs of renal and respiratory failure baby died at 9 days after birth. Conclusions. Sirenomelia is extremely rare congenital malformation that associated with the high mortality during early neonatal period due to the presence of underlying congenital malformations, such as urinary system. Ultrasonography during the prenatal period is the screening methods for the diagnosis of this malformation. No conflict of interest was declared by the authors. Key words: sirenomelia, diagnostic, twins.
El Derecho de la globalización: una propuesta conceptual y axiológica para la nueva realidad jurídica
Authors: González-Ordovás María-José
Published: December 2020

El Derecho atraviesa una época llena de transformaciones materiales y formales, técnicas y sustantivas como efecto de la acción de un conjunto de factores y fenómenos jurídicos y extrajurídicos al que llamamos globalización. A consecuencia de ello la cultura jurídica clásica va dando paso a una nueva que necesariamente trae consigo la reconsideración y reformulación de algunos conceptos. Nociones como las de soberanía, Estado, constitución o derechos humanos se ven sometidas a tensiones propias del actual contexto global y de los dilemas jurídicos y sociales que acarrea. El objetivo del presente trabajo es el de describir el horizonte jurídico contemporáneo de la mano, principalmente, de algunos de los juristas y filósofos franceses y alemanes contemporáneos más destacados. Tales consideraciones conceptuales van acompañadas tanto de propuestas terminológicas con las que se pretende dar nombre a las nuevas realidades, como de algunas aportaciones de contenido ético como son, entre otras, la necesidad de un humanismo jurídico o la elaboración de una teoría mixta de derechos y deberes fundadas ambas sobre un principio de responsabilidad capaz de trascender la mera reciprocidad.
Comprehensive Review on High Hydrogen Permselectivity of Palladium Based Membranes: Part II
Authors: Faizal Hasan Mohd , Nyakuma Bemgba B. , Rahman Mohd Rosdzimin Abdul , Rahman Md. Mizanur , Kamaruzaman N. B. , Syahrullail S.
Published: December 2020

This article completes the presentation of various techniques reducing concentration polarisation in palladium based membranes for supplying ultra-high purity hydrogen to a polymer electrolyte fuel cell (PEFC), such as the implementation of baffles and the use of microchannel configuration. The present paper also reviews and reports the current methods for estimating hydrogen permeation flux under concentration polarisation influence, which will be a useful guide for academics and industrial practitioners.
Development of composition and process of obtaining multicomponent ferroalloys
Authors: Zhuchkov V. I. , Zayakin O. V.
Published: December 2020

The main product of ferroalloy plants is standard ferroalloys. They often do not have all the necessary service characteristics and are not very suitable for metal processing in a ladle. The developing progressive technology of steelmaking is forced to adapt to the existing range of ferroalloys, the standards for which have not been updated for 50 years or more. In addition, in recent years, the sources and markets of ferroalloy raw materials have changed, and their quality and content of leading elements have decreased. This makes it difficult or excludes the possibility of obtaining ferroalloys according to existing standards. In this regard, the production of more efficient ferroalloys of a new generation is required, suitable for progressive processes in the developing areas of ferrous and non-ferrous metallurgy 795 and smelted from non-traditional types of domestic ore raw materials. These include complex or multicomponent ferroalloys containing, in addition to iron, two or more functional elements. Complex ferroalloys should be created in the most favorable combinations of component. It contributes to the necessary effective impact on the iron-carbon melt with a high degree of assimilation of useful elements in it. The creation of scientific foundations for the formation of new compositions of multicomponent ferroalloys with high consumer properties, and the development of physicochemical processes for obtaining these alloys from unconventional ore raw materials contributes to solving the problems of developing compositions of effective new generation ferroalloys and expanding the ore base of ferroalloy production. When using the developed method of designing the composition of complex ferroalloys using unconventional raw materials, melting technologies were developed; various alloys of the systems were obtained and applied on a laboratory and industrial scale: Fe – Si – Cr, Fe – Si – B, Fe – Si – Ba – Ca, Fe – Si – Al – Nb, Fe – Si – Ca – Mg, Fe – Si – V – Ca – Mn, Fe – Si – Al.
Quality improvement of calibrated steel by surface deformation. Part 1. Determination of the stressed state of cylinderical parts during orbital surface deformation
Authors: Zaides S. A. , Pham Van Anh .
Published: December 2020

Cold drawn calibrated steel is an effective blank for the manufacture of low-rigid cylindrical parts such as shafts and axles. High accuracy of the diametric size along the length of the workpiece, low surface roughness, increased hardness and strength of the surface layer compared to hot rolled products allow us to produce a variety of parts with high metal utilization and high machining performance. The main disadvantage of calibrated metal is the residual stresses that occur during pressure treatment. To reduce or change the nature of the distribution over the cross section, it is proposed to use small plastic deformations in the surface layer of the hire. Known in practice methods of surface plastic deformation (PPD) usually lead to the curvature of non-rigid workpieces. To intensify the stress-strain state in the deformation zone, we propose a method of orbital surface deformation. Based on the finite element modeling, influence of the main parameters of orbital surface deformation on stress state in the deformation zone and residual stresses in the finished products is considered. Compared with the traditional PPD process, the stress intensity during orbital surface deformation will increase by 10 – 15 %. The residual compressive stresses that form in the surface layers reach 70 – 85 % of the material tensile strength. In the second part of the article, it is supposed to provide information on a more effective method of surface deformation and on the change in initial residual stresses that are formed during the calibration of cylindrical rods.
Phenylalanine Alleviates Postharvest Chilling Injury of Plum Fruit by Modulating Antioxidant System and Enhancing the Accumulation of Phenolic Compound
Authors: Sogvar Ommol Banin , Rabiei Vali , Razavi Farhang , Gohari Gholamreza
Published: December 2020

Research background. Low temperature storage causes chilling injury in plum (Prunus domestica L.) fruits. Consequently, any treatments with beneficial effects on these symptoms would achieve attention. For this purpose, phenylalanine treatments were applied on ‘Stanley’ plum fruits. The main purpose of the present study was to investigate the influence of the exogenous application of phenylalanine on fruit quality, chilling tolerance, and antioxidant capacity of ‘Stanley’ plums during cold storage.

Experimental approach. Phenylalanine at different concentrations were applied on ‘Stanley’ plums. Following phenylalanine application, plums were cold stored. Chilling injury, antioxidant capacity, electrolyte leakage, malondialdehyde, proline, and internal contents of anthocyanin, flavonoids, phenols, ascorbic acid, and some antioxidant enzymes were assessed.

Results and conclusions. Phenylalanine treatment signiﬁcantly alleviated chilling injury in plum fruits by enhancing antioxidant capacity and increasing the activity of phenylalanine ammonia lyase enzyme (PAL). Phenylalanine-treated fruits had higher levels of ascorbic acid, anthocyanin, flavonoids, and phenols, as well as a higher total antioxidant activity, than the control fruits during low temperature storage. Phenylalanine at 7.5 mM was the most effective treatment in enhancing the activity of PAL and the accumulation of phenolic compounds and in reducing the severity of chilling injury. Treatments delayed mass loss and maintained fruit firmness. In addition, the application of 7.5 mM phenylalanine improved the activities of antioxidant enzymes (superoxide dismutase, catalase, and ascorbate peroxidase), decreased the accumulation of hydrogen peroxide, and increased the endogenous content of proline. Moreover, phenylalanine maintained membrane integrity, manifested by a reduced electrolyte leakage and malondialdehyde accumulation.

Novelty and scientific contribution. In the current study, chilling injury had a positive correlation with the activities of PAL and antioxidant enzymes. However, negative correlations were observed between chilling injury and ascorbic acid content and antioxidant capacity. Considering the results, phenylalanine treatment could be spotted as an encouraging approach to alleviate the severity of chilling injury and thus preserve nutritional quality of plums during low temperature storage.
Glycemia Control Pada Pasien Paska Pembedahan Jantung: Studi Kasus
Authors: Fahmi Ismail , Nurachmah Elly , Herawati Tuti
Published: December 2020

ABSTRAKCardiac surgery-associated acute kidney injury (CSA-AKI) merupakan komplikasi utama dari pembedahan jantung. Salah satu kondisi yang dapat menyebabkan terjadinya CSA-AKI pada pasien bedah jantung adalah ketidakstabilan kadar glukosa darah. Protokol Enhanced Recovery After Surgery (ERAS) memaparkan pentingnya glycemia control untuk mencegah komplikasi terjadinya CSA-AKI. Artikel ini merupakan studi kasus yang menggambarkan manajemen keperawatan : glycemic control untuk mencegah terjadinya CSA-AKI pada pasien bedah jantung. Setelah dilakukan intervensi keperawatan berupa glycemia control, pasien tidak mengalami CSA-AKI. Manajemen gula darah pada melalui manajemen diet dan kolaborasi manajemen insulin merupakan rekomendasi ERAS dalam mencegah CSA-AKI pada pasien pembedahan jantung.  ABSTRACTCardiac surgery-associated acute kidney injury (CSA-AKI) is a major complication of heart surgery. One of the conditions that can cause CSA-AKI in cardiac surgery patients is the instability of blood glucose levels. The Enhanced Recovery After Surgery (ERAS) protocol explains the importance of glycemic control to prevent complications from CSA-AKI. This article is a case study describing nursing management: glycemic control to prevent CSA-AKI in cardiac surgery patients. After the nursing intervention in the form of glycemia control, the patient did not experience CSA-AKI. Blood sugar management through diet management and insulin management collaboration is ERAS recommendations in preventing CSA-AKI in cardiac surgery patients.
REVISITING ETHNICITY IN SOUTHEAST ASIA
Authors: Resminingayu Dewi Hermawati
Published: December 2020

To explain ethnicity, scholars have come to an endless discussion providing a wide spectrum of ethnicity throughout the world. Various perspectives have been suggested to comprehend the notion of ethnicity. To this point, there are three most well-known perspectives to explain this term, namely primordialism, instrumentalism, and constructivism approach. Most scholars commonly apply one approach to dissect a case study related to ethnicity. Few have ombined two approaches, for each approach seems to contradict one another. However, this paper suggests that those three approaches can be simultaneously applied if critically used to discern certain case studies related to ethnicity in Southeast Asia. This argument will be elaborated into the analysis of ethnic identity for the minority and majority groups in Indonesia and Thailand.
KRAKATAU ON FIRE, THE DISASTER OF 1883 IN DUTCH COLONIAL LITERATURE: A POSTCOLONIAL APPROACH
Authors: Honings Rick
Published: December 2020

In 1883, the volcano Krakatau erupted and collapsed, causing the deaths of tens of thousands. The eruption was one of the first disasters to take place beyond the Dutch boundaries that received so much attention in the Netherlands. Although the disaster appealed to the imagination, it barely led to the publication of fiction. Only in Dutch Indies youth literature can one find something about the Krakatau. In this article, four Dutch stories and novels are analysed: “Stories of the moon” by Nellie van Kol-Porreij, The hermit of Rakata or Krakatau on fire by Robert Michael Ballantyne, “Nine Months on Krakatau” by B.L. Kailola and Escaped from the jaws of death: The Krakatau tragedy by Rick Blekkink. These sources are analysed from a postcolonial perspective focusing on unequal power relations. Focal points are the representation of the Indies and the indigenous people of the colony. This article illustrates the continuities and shifts in the representations over de course of time (1886-2014). 
USE OF NANOBOTS IN DIAGNOSIS THE STATE OF THE LIVING ORGANISM
Authors: Parkhomey I.R. , Druzhynin V.A. , Tsopa N.V. , Zhyrov G.B.
Published: December 2020

Today, a new direction in medical science is developing rapidly - nanomedicine. Most of the methods in this area so far exist only in the form of projects. However, most experts believe that these methods will become fundamental in the 21st century. For example, the National Institutes of Health of the United States included nanomedicine in the top five areas of medical development in the 21st century, and the National Cancer Institute of the United States intends to apply the achievements of nanomedicine in the treatment of cancer. A number of foreign research centers have already demonstrated prototypes in the areas of diagnosis, treatment, prosthetics and implantation. Nanomedicine seeks to provide a significant set of research tools and clinically useful devices in the near future. This paper discusses the technique of using nanoscale robotic systems to accurately diagnose the condition of an organism. The proposed topic combines two aspects: purely technical and biological - the state of the organism. These aspects in themselves are important scientific problems, and their combination requires the creation of a technical and biological concept of diagnosis, without damaging the functions of the living organism and its tissues. The proposed technique for diagnosing a living organism by means of a nanobot includes three main components that are presented in the work, namely: the sequence of actions for manipulation of the nanobot in the body; calculation of quantitative characteristics of the diagnosis process and schematic implementation of the appropriate diagnostic scanner. The practical implementation of the proposed scanner is easy to implement and operate, and the logic of the above methodology allows us to formulate a common approach (concept) in the future when creating the latest diagnostic tools. The analysis of preliminary results of the study suggests that the introduction, removal and use of nanobots in living tissue is safe.
BRAND LOYALTY IN CREATING RELATIONSHIP MARKETING PRACTICES: A STUDY ON GSM OPERATORS
Authors: Yeğin Tuğba
Published: December 2020

Nowadays in all sectors "The only thing that does not change is the change itself." thought is dominant. And with this idea, the ever-changing competitive environment has become more customer-oriented than pro-duct-oriented. In this context, enterprises develop strategies. Relational marketing, one of the new para-digms, is based on the strategy of establishing and maintaining long-term relationships with the client. There are two issues to be emphasized by the managers of GSM operators who use relational marketing applicati-ons (gifts, discount applications, points, cards, etc.) to make their businesses efficient, productive and profi-table when using these applications. These; to create customer and brand loyalty. Brand loyalty; A brand that has gained the loyalty of consumers has realized all of these, as it is a very broad concept that covers brand awareness, brand recognition and brand awareness processes. The return of this situation to the customers while providing a long-term opportunity to reach, more and more consumers are able to reach at a low cost. In this context, because we believe that relational marketing practices have an impact on brand dependence and that GSM operators that appeal to all consumers from small to large are in an effort to create brand de-pendence; In this study, the effect of relational marketing practices in brand loyalty was analyzed by applying face-to-face questionnaire to 280 consumers in Karabük province and the data were analyzed with SPSS 18.0 program and the results were interpreted in the light of established hypotheses.
Treatment changes of coronavirus infection disease (COVID-19). What general practitioner should know? Part 2
Authors: Frolova Elena V.
Published: December 2020

The article presents an overview of methods of treatment of coronavirus infection based on available data from recent clinical studies and methodological recommendations. Drugs recommended as pathogenetic therapy are considered. Data from clinical trials and expert opinions are analyzed.
Features of glucocorticoides using for treatment of a patient with a new coronaviral infection in the conditions of the observator on the basis of students’ dormitory. Clinical case
Authors: Kuznetsova Olga Yu. , Lubimova Anna V. , Pleshanova Zhanna V. , Zamyatina Olga S. , Donetskov Nikita V. , Osinskaya Zoya R.
Published: December 2020

The article is devoted to the peculiarities of providing medical care for coronavirus infection in a university student who has been moved to an observatory organized in a hotel-type hostel of the university to prevent the spread of COVID-19 among students living in hostels. The article provides data on the positive experience of using dexamethasone in the treatment regimen for moderately severe disease, follow-up and examination data. The article considers the tactics of managing a patient with suspected COVID-19 in the presence of data for pneumonia according to computed tomography and clinical manifestations characteristic of a new coronavirus infection, which was later confirmed in the study of antibodies to SARS-CoV-2. The importance of round-the-clock medical monitoring of persons placed in the observatory, finding out the details of the epidemiological history from them, as well as determining the tactics of their treatment with limited hospitalization opportunities in a growing number of patients with severe manifestations of COVID-19 requiring inpatient treatment is emphasized.
A new coronavirus infection can lead to a rapid deterioration of the condition in young patients, which is not always manifested by severe lung damage according to computed tomography data, but is characterized by persistent fever that cannot be stopped by antipyretics, as well as severe muscle pain, severe asthenia, which can be considered as clinical indicators of the development of hyperactive inflammatory syndrome. The use in the treatment regimen of intravenous dexamethasone at a dose of 0.1 mg / kg of body weight twice led to a rapid normalization of temperature, relief of all clinical symptoms and was not accompanied by any complications both in the early period of convalescence and 2 months after discharge from the observatory.
Do subterrâneo no Horto: Auta de Souza e os mitos culturais sobre a poeta no século XIX
Authors: Barros Alice Vieira
Published: December 2020

O artigo faz uma leitura crítica da obra da poeta Auta de Souza, a partir de um corpus de poemas extraído de seu livro Horto (1900). Contrastamos a palavra poética de Auta de Souza com o que disse parte de sua fortuna crítica a respeito de sua obra, e observamos como essas leituras foram afetadas por visões distorcidas acerca da autoria feminina e por mitos culturais a respeito da “poeta mulher” vigentes no século XIX. Tenciona-se discutir aspectos da poesia da autora que passaram despercebidos pela fortuna crítica – tais como sua musicalidade, seu caráter moderno e sua temática homoerótica. Esses elementos parecem ter sido ignorados pela fortuna crítica devido a uma mistura inadequada entre as personas poéticas construídas pela escritora e a pessoa empírica da poeta, com sua trajetória pessoal e biográfica.
Os irmãos Esaú e Jacó e as irmãs Lia e Raquel, por Fulgêncio, o Mitógrafo: tradução alipogramática do Livro V da De aetatibus mundi et hominis
Authors: Santos Júnior Cristóvão
Published: December 2020

Esta é a primeira tradução alipogramática para a língua portuguesa do Livro V da obra De aetatibus mundi et hominis, atribuída a Fulgêncio, o Mitógrafo, um escritor africano pertencente à Antiguidade Tardia. Nesta quinta seção, são abordadas duas passagens bíblicas envolvendo a personagem Jacó, uma relativa a seu irmão Esaú e outra envolvendo as irmãs Lia e Raquel. Em sua versão poética das narrativas bíblicas, Fulgêncio não emprega unidades lexicais que contenham a letra 'e', o que não foi mantido no texto de chegada proposto, visto que, neste momento, busca-se fornecer uma possibilidade de leitura que permita um melhor acesso ao núcleo temático consubstanciado na edição crítica latina, fixada por Rudolf Helm (1898). Ressalte-se, por fim, que a De aetatibus é considerada o lipograma mais antigo que se tem uma concreta atestação, de modo que ela representa um importante testemunho da tradição de escrita constrangida.
Entre o histórico e o ficcional: a sombra dos documentos em Fe en disfraz, de Mayra Santos-Febres
Authors: Costa Júlia Morena , Santos Eliene Santana dos
Published: December 2020

Este ensaio se dedica a discutir a relação entre o real e o ficcional nos documentos constantes no romance Fe en disfraz (2009), de Mayra Santos-Febres (1963, Porto Rico), como forma de criação de zonas de afetação dos leitores e de revisão de um passado histórico violento. A partir da análise da novela, que intercala o presente dos protagonistas com documentos do passado escravocrata latino-americano, com especial atenção à violência que recai sobre o corpo de mulheres negras, propõe-se uma reflexão sobre as potencialidades do real no espaço narrativo. No embaralhamento dos registros históricos e ficcionais, com informações confirmáveis e de reconhecido registro documental no romance, propõe-se discutir as potencialidades da ficção que toma a suposta legitimidade do real como estratégia que possa visibilizar e fortalecer narrativas outras que reinserem os corpos de mulheres negras na história oficial e literária a partir da chave da dignidade.
Svetlana Aleksiévitch e as mulheres do front
Authors: Lisboa Isabella Souza
Published: December 2020

Svetlana Aleksiévitch foi galardoada, em 2015, com o Prêmio Nobel de Literatura por sua escrita polifônica, um monumento ao sofrimento e à coragem em nosso tempo. Em sua obra A Guerra não tem rosto de mulher, a jornalista e escritora ucraniana reúne entrevistas com mais 500 ex-combatentes que atuaram no exército vermelho da União Soviética, durante a Segunda Guerra Mundial. Ex-combatentes que antes do trabalho minucioso de Aleksiévitch tiveram suas narrativas silenciadas pela Historiografia hegemônica. Este artigo, uma primeira parte de um estudo analítico e crítico mais detalhado da obra, visa apresentar alguns resultados de pesquisas preliminares, que compõem um trabalho de dissertação mais extenso voltado para a investigação do momento de gênese do livro que se deu de uma maneira muito particular, a fim de contribuir para os estudos da autora no Brasil e em Língua Portuguesa. Alguns discursos são mapeados neste estudo, como a relação entre jornalismo e literatura, literatura como arquivo, testemunho, feminismo e a noção de obra.
A metaliteratura, o hipertexto e as interartes em Bonsai, de Alejandro Zambra
Authors: Silva Alexandre Miguel da
Published: December 2020

A partir das metáforas produzidas pelos elementos da natureza no romance Bonsai (2014), de Alejandro Zambra, o texto discute a ideia de jardim e estufa a partir dos conceitos propostos por Andreas Huyssen e Anne Cauquelin. Deste ponto, o ensaio analisa e discute os símbolos da natureza no romance pela perspectiva da metaliteratura e o hipertexto a partir do marco teórico de Gérad Genette. As relações entre interartes e o editorial são embasados por Claus Clünver, Luise Fialho e Ana Grunsznski.
Research Insights: Does R&D Activity Stimulated by Chile’s FONDEF and FONTEC Programs Lead to Knowlege Spillovers?
Authors: Crespi Gustavo , Figal Garone Lucas , Maffioli Alessandro , Stein Ernesto H.
Published: December 2020

Chile's FONDEF and FONTEC R&D grant programs both boost the productivity of direct beneficiaries, increasing total factor productivity (TFP) by around 4.2 percent. However, spillover effects are contingent on program design. Only FONDEF funded projects (requiring collaboration between firms and research centers) generate positive spillovers. FONTEC projects, which fund R&D within the firm, do not. Spillover effects are nonlinear according to the share of firms within a sectorregion receiving subsidies. Positive knowledge spillovers dominate when the share of treated firms is small. However, if the program supports a large share of a firms rivals, spillovers decline as a result of a business-stealing effect.
Escala de Determinantes da Evasão no Ensino a Distância (EDED): Proposição e Validação.
Authors: Vieira Kelmara Mendes , Martins Pedro Saulo Rocha , Bender Filho Reisoli , Moreira Júnior Fernando de Jesus
Published: December 2020

Os cursos na modalidade de educação à distância têm crescido de forma acelerada no Brasil. Entretanto, os elevados índices de evasão são um desafio à gestão e à eficiência das instituições. Seguindo esta discussão, este trabalho propõe a Escala de Determinantes da Evasão no Ensino a Distância (EDED) a partir da avaliação de modelos de análise fatorial confirmatória e exploratória. A qualidade dos itens foi analisada a partir de modelos multidimensionais de teoria de resposta ao item e, no geral, se mostraram satisfatórios. Os resultados demonstraram que o ajuste do modelo indicou uma estrutura de duas dimensões à EDED; sendo a primeira relacionada ao suporte à aprendizagem e a segunda com as condições pessoais. A EDED pode ser utilizada tanto à avaliação dos fatores que levaram um indivíduo a evadir quanto à avaliação das fragilidades dos cursos oferecidos.
Palavras-chave: Evasão. Ensino a distância. Escala. Avaliação psicométrica.
Educação a Distância: uma Nova (e Única?) Oportunidade para Obter um Diploma
Authors: Garcia da Costa Everton
Published: December 2020

No decorrer dos últimos anos, a Educação a Distância (EAD) vem apresentado um crescimento acelerado no âmbito do ensino superior brasileiro. Hoje, essa modalidade de ensino já representa quase 25% das matrículas de graduação do país, o que mostra a sua consolidação. Diante dessa expansão acelerada da EAD, este artigo tem como objetivo central investigar os estudantes que optaram pelo ensino superior a distância. No total, foram entrevistados 58 estudantes de graduação a distância, matriculados em final de curso, em 7 instituições de ensino superior (IES) do Rio Grande do Sul. O roteiro de entrevistas foi construído em torno de quatro eixos de investigação: 1) perfil dos estudantes; 2) motivação; 3) percepção e adaptação; 4) estratégias de permanência. O artigo conclui que, para muitos estudantes, a EAD é muito mais do que apenas uma nova oportunidade para obtenção do diploma: ela é o único caminho possível.
Palavras-chave: Educação a distância. Ensino superior. Estudantes de graduação.
Papel de Professor Tutor na Percepção de Discentes e dos Próprios Tutores
Authors: Ferreira Danielle Mello , Mourão Luciana
Published: December 2020

O professor tutor é o principal responsável pela interação pedagógica, pelos processos de orientação e motivação dos alunos em suas atividades acadêmicas. O presente trabalho objetivou comparar representações sociais dos estudantes de Ensino Superior na modalidade a distância e dos próprios professores tutores acerca da função de tutoria. Participaram da pesquisa 405 tutores e 585 universitários da modalidade de educação a distância de diferentes instituições de ensino superior, totalizando uma amostra de conveniência de 990 pesquisados. Esses participantes responderam ao termo indutor "tutor" para a evocação livre de três palavras. Com apoio do software Iramuteq, foi realizada a análise prototípica, que estrutura as representações sociais em quatro zonas distintas a partir de uma matriz que combina a ordem média e a frequência de evocação das palavras. Os resultados apontam para uma percepção positiva da figura do professor tutor, por ambos os grupos da pesquisa, com uma clara associação do papel dos tutores como uma função central na modalidade a distância. Embora haja um núcleo comum de representações entre ambos os grupos pesquisados, foram também identificadas diferenças entre eles. Enquanto os professores tutores se voltam para o seu papel acadêmico nos processos de ensino-aprendizagem, os estudantes associam a função a um amparo ao longo do curso. Os achados deste estudo sugerem uma valorização da profissão como condição de melhoria da qualidade dos cursos de graduação a distância. Os resultados são discutidos à luz da literatura da área e é feita uma proposição de agenda de estudos futuros sobre a temática.
Palavras-chave: Educação a distância. Graduação. Representações sociais. Tutor.
Rock Breaking Performance of Two Disc Cutters of Tunnel Boring Machine for Safe Tunneling in Unstable Coal Rock Stratum
Authors: Guo Zhenggang , Wang Juan , Lv Shuai , Yu Deyue , Zhang Xu
Published: December 2020

In unstable coal rock formations, the rescue channels should be constructed through safe and efficient tunneling. The rock breaking performance of the tunneling equipment directly hinges on the cutter-head layout. Focusing on the conditions of unstable coal rock formation, this paper adopts the extended Drucker-Prager (D-P) plastic model to define the properties of bedrock materials of the coal rock with low mechanical strength and poor homogeneity. Then, a finite-element model was established on ABAQUS for the coal rock cut by two disc cutters, and used to simulate the breaking of the coal rock and the peeling of slags from the bedrock. On this basis, the authors analyzed the influence of cutter spacing (30, 35, 40, and 45mm) over cutting force, rock breaking amount, and specific energy under two cutting methods: simultaneous cutting and sequential cutting. Finally, a cutter deployment strategy was designed for safe and efficient tunneling in unstable coal rock formations. The results show that: Under simultaneous cutting, as the cutter spacing increased from 30 to 35mm, the rock breaking amount increased, while the specific energy declined; as the cutter spacing further rose from 35 to 45mm, the rock breaking amount dropped, while the specific energy increased. Under the coal rock conditions in our research, the optimal cutter deployment strategy is: simultaneous cutting with cutter spacing of 35mm. The research results provide theoretical support for the cutter-head design of rescue equipment for collapsed coalmines.
Analysis on Cognitive Behaviors and Prevention of Human Errors of Coalmine Hoist Drivers
Authors: Zhu Pengye , Sun Linhui , Song Yunfeng , Wang Liao , Yuan Xiaofang , Dai Zong
Published: December 2020

Human errors are commonplace among hoist drivers in the hoisting task of coalmines. To reduce these errors and prevent accidents, it is necessary to identify the features of cognitive behaviors and main cognitive errors of the hoist drivers. This paper analyzes the accident cases and operating flow of coalmine hoist, and establishes a cognitive process model of coalmine hoist drivers. Further, the cognitive behaviors and functions of the drivers were analyzed stage by stage, revealing the distributions of their main cognitive behaviors and functions. It is learned that most coalmine hoist accidents concentrate in two stages: lifting, and operation monitoring. The operating processes in the two stages were further deliberated. The specific operations were extracted as the influencing factors of human errors, and the importance of each index was calculated through analytic hierarchy process (AHP). The research results provide a theoretical reference for identifying the key factors affecting the human errors of the operations by coalmine hoist drivers, and shed new light on how to prevent such errors.
An Evaluation Model of Subgrade Stability Based on Artificial Neural Network
Authors: Cheng Youkun , Shi Zhenwu , Zu Fajin
Published: December 2020

In special areas, the highways may suffer from such diseases as deformation, cracking, subsidence, and potholes, making highway maintenance a complex and difficult task. To obtain the law-term deformation law of the subgrade and accurately evaluate the subgrade and pavement stability, this paper establishes a subgrade stability evaluation model based on artificial neural network (ANN). Firstly, the law of unstable subgrade deformation in highways of special areas was derived by analyzing the influencing factors on subgrade stability, namely, temperature field, moisture field, and traffic load. Next, the correlations between input and output characteristic quantities were extracted, and used to construct the nonredundant mapping function between influencing factors of subgrade unstable deformation and the levels of subgrade stability. Finally, a fuzzy neural network (FNN) was constructed based on Takagi-Sugeno model, realizing the evaluation of subgrade stability. The proposed model was proved effective and accurate through experiments.
Grey Relational Analysis on Influencing Factors of Highway Slope Safety in Ankang Mountain Area
Authors: Yang Yiyun
Published: December 2020

In recent years, Ankang has witnessed frequent occurrence of collapses and other instability phenomena, which brought huge losses to urban and rural transportation, and agricultural production. Therefore, it is very important to research and analyze the stability of highway slopes in this area. This paper systematically explores the factors that affect slope safety, namely, slope height, slope angle, cohesive force, bulk density, internal friction angle, and crack depth, through grey relational analysis (GRA), using engineering analysis software and MATLAB. The stability of the high slope was further evaluated through sensitivity analysis. The results show that cohesive force and internal friction angle are the leading factors affecting slope stability, followed by crack depth, while slope angle, bulk density and slope height are not major influencing factors. The research results provide the basis for the protection and design of similar slopes in Ankang prefecture.
NEW APPROACHES IN MULTI-SHAFT GEAR DRIVES VIBRATION DIAGNOSTICS
Authors: Omes Dmitry V. , Dragan Alexandr V.
Published: December 2020

Presented studies are aimed at developing of new and improving of existing methods of vibration signal analysis to detect local gears damages during their operating.

The new method of calculating the modulation coefficient showed low sensitivity to the place of mounting of the vibration sensor and makes it possible to use in the absence of information about the vibration activity of the gear drive in the previous workable condition.

A technique for designing and using unique wavelets was developed. The technique reflects the specifics of real processes in the interaction of meshing teeth and adapted for gears vibration analysis. Using of unique wavelets can noticeably increase the wavelet coefficients sensitivity to changes in gears condition.
Self-oscillation of the Froude pendulum (Numerical study)
Authors: Sunarchin Robert А. , Petrov Pavel V.
Published: December 2020

A numerical study of the self-oscillation of the Froude friction pendulum is presented. For comparison with approximate analytical or graphical solutions, the cubic approximation is used as one of the approximations of the friction characteristic; changes in the case of other approximations are shown.

By results of the conducted computational experiment was built characteristics of the amplitude of self-oscillations from dimensionless ratios, complexes of similarity, which showed the convergence of the estimated and actual (obtained by numerical integration) values of the amplitudes of oscillation for small values of friction and slope characteristics; if you increase the moment amplitude is also increased.

It is noted that the results of computer modeling will significantly depend on the design, manufacturing technology and operating conditions of the device in question.
STUDY OF ELASTIC PROPERTIES OF A MAGNETO-RHEOLOGICAL ELASTOMER FOR VIBRO-INSULATION IN VACUUM
Authors: Bazinenkov A. M. , Ivanova D. A. , Efimov I. A. , Rotar A. P.
Published: December 2020

Magnetorheological elastomer is used in vibration isolation and damping systems; it is promising to use a platform of active vibration isolation in a vacuum to provide vibration protection for the research object. Polymer is a composite material whose rheological properties can change under the influence of a directed magnetic field. For the correct operation of the platform, the constancy of mechanical properties is necessary, which can change during degassing with increasing temperature. The paper presents the results of studies of the mechanical properties of MRE with various compositions prior to degassing in a vacuum. It was found that the elastic modulus of the polymer directly depends on the concentration of filler particles, and no dependence on the presence of surfactants was found.
ANALYSIS OF DYNAMIC PROCESSES IN GEARE COUPLING OF HELICOPTER TAIL ROTOR TRANSMISSION
Authors: Kolesnikov I. V. , Koropets P. A.
Published: December 2020

The operation of the Mi-26 helicopters has shown that the operating time for rejection of splined gear couplings of the tail rotor transmission can differ by about 30 times. This fact is the reason for the search for dynamic processes that violate the stationary of the loading modes of the transmission couplings. Based on the analysis of the kinematics and dynamics of the clutch, it is shown in this work that when sliding in "tooth-spline" friction pairs, frictional self-oscillations can develop, leading to additional dynamic loads in the transmission elements and, as a consequence, a decrease in the working life of the clutches. The type of self-oscillations, their parameters (frequency, amplitude), as well as the stability of the transmission in relation to frictional self-oscillations depend on the tribological characteristics of the "tooth-slot" contact, which require additional experimental research. The results of this work can be useful in planning field tests and processing the data obtained.
ON THE PROBABILISTIC APPROACH TO EVALUATING THE EFFECTIVENESS OF DEVELOPING PROMISING AIRCRAFT MODELS
Authors: Artemenko Igor V. , Oleshko Vladimir S.
Published: December 2020

Creating a promising aircraft is an important area of state policy. Making the right decision to create a promising aircraft technology contributes to the economic assessment of the development efficiency. The subject of economic assessment is the updating of resources allocated for the development of the aircraft. An important component of ensuring high reliability of evaluating the effectiveness of the development of a promising aircraft is the methodology of its implementation. The methodology of economic assessment is aimed at determining economic indicators. The authors present the procedure for using the probability of economic success indicator in the economic assessment of the effectiveness of developing a promising aircraft when determining the feasibility of adopting a draft tactical and technical task for the development of an aircraft. To improve the accuracy of the economic assessment, it is proposed to use the standard error of alternative methods for calculating the cost of performing activities at the stages of the aircraft life cycle. The authors tested the proposed method on the example of a promising auxiliary power plant of a military transport aircraft. It is advisable to evaluate the cost of developing a promising auxiliary installation of a military transport aircraft based on the complexity of the development, determined depending on its basic complexity and cost. The authors tested the proposed method on the example of a promising auxiliary power plant of a military transport aircraft. The proposed method is applicable for calculating costs for other types of equipment at all stages of its life cycle.
DEVELOPMENT OF EXPORT OF HIGH-TECH AND INNOVATIVE PRODUCTS
Authors: Gredasova Elena E.
Published: December 2020

The article discusses the main criteria for classifying goods, works, services as innovative products and (or) high-tech products, the necessary economic efficiency of using these products, the existing measures of state support for innovation in the sectors of the economy. In order to consider goods, works or services high-tech, they must be produced or rendered by high-tech organizations using the latest technological equipment, technological processes and technologies, and with the participation of highly qualified personnel. The author researches the interpretations in the scientific literature and the legislative base of the concepts of high-tech, science-intensive and innovative products, analyzes the dynamics of exports by product groups and analyzes the level of highly qualified personnel based on the international ranking by countries. The author developed and formulated proposals on amendments to the regulatory framework in order to develop the export of high-tech and innovative products. The author made a conclusion that the analysis of the structure of incomes by export items shows that it is necessary to develop new directions, to provide government support in the form of subsidies in order to increase the level of their competitiveness in international markets.