bluuebunny/crossref_metadata_2025 huggingface dataset:
Przestrzenne zróżnicowanie starzenia się ludności na obszarach wiejskich województwa wielkopolskiego
Authors: Polna Małgorzata
Published: March 2021

W artykule przedstawiono poziom i przestrzenne zróżnicowanie starości demograficznej oraz dynamikę procesu starzenia się ludności na obszarach wiejskich województwa wielkopolskiego. Ukazano ją na tle przebiegu tego procesu w miastach. Badania dotyczą lat 1995–2019. Analizę przeprowadzono w ujęciu gmin. W badaniach wykorzystano miary starości demograficznej w ujęciu statycznym i dynamicznym. Obszary wiejskie charakteryzują się postępującym procesem starzenia się, przy czym stopień zaawansowania starości demograficznej oraz dynamika tego procesu są niższe niż w miastach województwa. Względnie niski poziom zaawansowania starości demograficznej obszarów wiejskich wykazuje znaczne zróżnicowanie wewnątrzregionalne. Obok gmin, które można nazwać demograficznie starymi, występują jednostki o relatywnie wolniej postępującej starości oraz takie, w których ma miejsce odmładzanie populacji.
Wielkość i kierunki migracji na pobyt stały w województwie wielkopolskim w latach 2002–2017
Authors: Ilnicki Dariusz
Published: March 2021

Celem opracowania jest próba wyjaśnienia zróżnicowania wielkości oraz kierunków migracji na pobyt stały pomiędzy jednostkami poziomu NUTS 5 podziału terytorialnego. W oparciu o przemieszczenia w układzie wieś–miasto, miasto–wieś zostały zidentyfikowane odpowiednio obszary zlewni migracyjnych oraz obszary atrakcyjności migracyjnej. Podstawową jednostką odniesienia przestrzennego prowadzonych analiz były miasto i gmina (NUTS 5). Wielkość migracji zostanie ukazana w układzie czterech kierunków migracji (miasto–miasto; miasto–wieś; wieś–miasto; wieś–wieś). W opisie wielkości i kierunków migracji zastosowany zostanie sumaryczny przepływ, a w przypadku wyznaczenia obszarów emigracji i imigracji miast największy przepływ. Jakkolwiek migracje na pobyt stały są aktem jednorazowym, to ich  powtarzalność, wielkość, obecność „relacji powrotnych” pozwala wnioskować o wzmacnianiu powiązań funkcjonalnych pomiędzy miastami a ich otoczeniem. W konsekwencji migracje tego typu mogą być wykorzystywane do delimitacji obszarów powiązanych ze sobą funkcją miejsca zamieszkania, miejsca pracy – obszarów funkcjonalnych miast.
Znaczenie konkurencyjności produkcji mleka w ujęciu regionalnym na przykładzie wielkopolskich gospodarstw specjalizujących się w produkcji mleka
Authors: Wiza Paulina Luiza
Published: March 2021

Znaczenie konkurencyjności w wymiarze regionalnym nasiliło się szczególnie w okresie członkostwa Polski w Unii Europejskiej, co znajduje odbicie także w badaniach naukowych. Celem artykułu jest przeprowadzenie dyskusji na temat wybranych zagadnień teorii i metodologii regionalnych badań dotyczących konkurencyjności oraz ocena konkurencyjności gospodarstw mlecznych w Polsce w ujęciu regionalnym ze szczególnym uwzględnieniem wielkopolskich gospodarstw rolnych. Oceny konkurencyjności gospodarstw specjalizujących się w produkcji mleka dokonano w zakresie czasowym od 2002 do 2018 r. w oparciu o dane GUS oraz na podstawie danych zebranych przez Polską Federację Hodowców Bydła i Producentów Mleka. Badania miały na celu określenie pozycji konkurencyjnej wielkopolskich gospodarstw mlecznych pod względem produkcji mleka na tle Polski.
Strictly nef vector bundles and characterizations of ℙ
n
Authors: Liu Jie , Ou Wenhao , Yang Xiaokui
Published: March 2021

In this note, we give a brief exposition on the differences and similarities between strictly nef and ample vector bundles, with particular focus on the circle of problems surrounding the geometry of projective manifolds with strictly nef bundles.
Einleitung
Authors: Esser Andrea Marlen
Published: March 2021

Many classical philosophical texts contain passages that are to be judged as discriminatory and degrading, and by today’s standards even as racist, sexist or anti-Semitic. How we should deal appropriately with this heritage – be it in teaching or in research – is by no means undisputed. Some researchers are of the opinion that the passages in question are terminological idiosyncrasies of the respective authors related to the time they lived in and therefore philosophically irrelevant: they can be disregarded. Others doubt that such a separation can actually be made. They are of the opinion that the philosophical parts of the respective work are always affected if racist, sexist or anti-Semitic ideas can be detected in passages. In analogy to the current discussion on how to deal with problematic works of art, memorials, street names or linguistic expressions, the question can also be addressed to philosophical works: what should be done with philosophical texts if they contain racist, sexist and anti-Semitic thoughts and their reception preserves so-called racist knowledge in our society? The contributions in the section ‘Philosophie aktuell’ take a stand on these questions from different perspectives and thereby show that one can also deal critically with this topic on the basis of philosophical methods.
Japanese adapted physical education graduate students’ learning about master’s research thesis projects
Authors: Sato Takahiro , McKay Cathy
Published: March 2021

The purpose of this study was to describe how Japanese adapted physical education (APE)graduate students engage themselves in learning research skills through masters’ research thesis projects. In this study, andragogy theory was utilized, which allowed the researchers to understand Japanese graduate students’ learning experiences of master’s research thesis projects. Five Japanese APE master’s students (3 men and 2 women) participated in the study, which had a descriptive-qualitative design using an in-depth, semi-structured interview approach. The data source was face to face interviews. Interview data were analyzed using a constant comparative method, and resulted in themes related to (a) reasons for selecting a master’s research thesis topic, (b) learning challenges of research methods, and (c) peer evaluation and collaboration. To better support Japanese graduate students, this study encourages APE faculty and graduate students to learn how to develop a blueprint of the research design, research method, and presentation of the results and discussion using various research sources in the graduate students’ research seminars. This study posits that Japanese APE graduate students will benefit from a learning strategy such as language translation-oriented strategy that enables them to capture the nuance of content learning in APE.
A ESTRUTURA ESPACIAL DE GALICIA. ANÁLISE A PARTIR DO CÁLCULO DOS POTENCIAIS DE MERCADO A NIVEL COMARCA, 1991-2016
Authors: LÓPEZ-RODRÍGUEZ Jesús , MANSO-FERNANDEZ Guillermo
Published: March 2021

Neste artigo analízase a distribución espacial da actividade económica nas comarcas de Galicia através do cálculo do potencial de mercado de Harris (1954) e os índices de Gini e curvas deLorenz asociadas. Os resultados da análise amosan un claro patrón centro-periferia nadistribución da actividade económica que no caso de Galicia convértese nun patrón occidenteoriente.Este patrón ten unha alta coincidencia co trazado que debuxa a autoestrada A-9 queatravesa Galicia de norte a sur, dende Ferrol na parte noroccidental de Galicia na provincia de ACoruña, a Vigo na parte suroccidental na provincia de Pontevedra. Esta área que comunmente secoñece como a dorsal atlántica é a área que, excluíndo as cidades de Lugo e Ourense, concentra unmaior dinamismo tanto en termos de actividade económica como en relación coa concentraciónde poboación.
AUTHENTICATION OF THE REGION AS THE OBJECT OF ECONOMIC SECURITY IN THE CONTEXT OF ECONOMIC DEVELOPMENT OF UKRAINE
Authors: IVANOVA Natalia
Published: March 2021

The urgency of the research involves the need to define the procedure for determinationof the region belonging in the system of the regional economic security; depending on thepresented identifier (cluster).The development of discriminative models of the regionauthentication is expedient to define its belonging to particular category of the regionaleconomic security. The objective of this article is to develop the mathematical models ofthe region authentication in relation to the status of their economic security using thediscriminant analysis. The region identification cluster is the indicator of grouping. Thearticle rationalizes the expediency of using the method of discriminant analysis whileresearching the regional economic security according to data of social and economicdevelopment of the region. As a result of clustering of regions by social and economicdevelopment, three statuses of the regional economic security were defined: “good”,“sufficient” and “satisfactory”. The classification functions of authentication of the regionas the object of anti-crisis management for ensuring the regional economic security weredeveloped for the specified classes by method of discriminant analysis. The evaluation ofaccuracy of the obtained functions indicates the expediency of their using. In addition, thearticle describes the authentication procedure of the region as the object of anti-crisismanagement for ensuring the regional economic security. The application ofmultidimensional statistical methods while researching the multi-criteria economicsystems, such as socio - economic development of the region, allows exploring a largenumber of indicators with different measurement units, to identify the homogeneity ofsystem objects. As a result of application of the discriminant analysis’ method, theclassification functions of authentication of the region as the object of anti-crisismanagement for ensuring the regional economic security were developed.
A APTITUDE DO SOLO NA AVALIACIÓN DE TERRAS PARA A PLANIFICACIÓN TERRITORIAL
Authors: DÍAZ MANSO José Marcial , SANTÉ RIVEIRA Inés , NIETO ZAS Encarnación
Published: March 2021

O Plan Territorial Integrado da bacía hidrográfica do río Eume (PTI do Eume) contemplaentre os seus obxectivos protexer o medioambiente e favorecer a actividade económicacon criterios de sustentabilidadeDefiniuse un modelo de avaliación baseado no desenvolto pola Food and AgricultureOrganization (FAO) no ano 1976, A Framework for Land Evaluation, para asignar a cadaunidade territorial unha destas 7 categorías ou clases de terra obtidas a partir datipificación dos 12 factores máis relevantes que condicionan a aptitude do solo na bacía dorío Eume. Esta tipificación cartográfica da aptitude agroforestal ademais de empregarsecomo indicador da eficiencia na utilización do solo, (comparándoa cas dinámicas dascoberturas do solo reflectidas en series cartográficas como o Sistema de información deocupación del suelo de España (SIOSE)), empregouse para elaborar un modelo territorialcomposto por tres áreas de ordenación integral que segmentarán o territorio da bacía coobxectivo de facer unha ordenación e regulación “ad doc” dos usos e actividades máisacordes a aptitude do solo co fin de optimizar a eficiencia do uso desde unha perspectivaterritorial e sostible.
O CICLO DA DESIGUALDADE SALARIAL E O PAPEL DO MERCADO DA VIVENDA
Authors: HOSPIDO LAURA
Published: March 2021

En moitos países, a destrución de emprego durante a última crise económica explicaseen boa maneira polo sucedido no mercado da vivenda. Nunha publicación recenteKaplan et al. (2017) describen como en economías avanzadas como a norteamericanadespois dun aumento prolongado, os prezos da vivenda derrubáronse desencadeandouna crise financeira e una caída abrupta da riqueza das familias que, xunto coasfriccións macroeconómicas, provocaron unha destrución de emprego moipronunciada.No caso de España o aumento e posterior diminución na demanda de traballadoresda construción tivo un gran impacto non só no emprego senón tamén na desigualdadesalarial (Bonhomme e Hospido, 2017). De feito, a evolución da desigualdade salarialnas últimas décadas foi fortemente contracíclica: incrementouse arredor da recesiónde 1993, logo experimentou unha diminución significativa durante a expansión de1997 a 2007, para volver a crecer con forza durante a máis recente crise. Comomostra a Figura 1, o aspecto máis destacado desta evolución non é que a magnitudedas variacións sexa tan elevada, senón que a evolución sexa en paralelo cosmovementos da taxa de desemprego.
A UNIVERSIDADE DE ONTE A HOXE: DA ANTIGÜIDADE Á CALIDADE. SITUACIÓN DO SISTEMA UNIVERSITARIO DE GALICIA.
Authors: DÍEZ DE CASTRO José Alberto , LÓPEZ PEREIRA J. Eduardo , De MIGUEL DOMÍNGUEZ José Carlos , VÁZQUEZ ROZAS M.ª Emilia
Published: March 2021

Érase que se era unha Universidade que se cría que canto máis antiga era, máis valía e asíteimaba en abesourar documentos antigos á procura da máis remota orixe posible. Neseambicioso desexo chegou a imaxinar que nacera en 1088, ata que alguén lle advirtiu que odocumento en que se apoiaba era unha clara falsificación medieval e houbo de seconformar con 1188, no mellor dos casos. Pero outras non lle foron detrás e trataron de seigualaren en antigüidade con ela, e a estas alturas nin elas o saben nin nós temos claro calé a súa antigüidade nin cal delas é a máis antiga. Nin sequera a nosa querida universidadecompostelá líbrase de tal sospeita, pois non son poucos os que non comparten que o seunacemento ou creación se remonte a 1495, como habitualmente se nos fai crer.En todo caso, a Universidade como institución cunha organización formal data da Europamedieval, malia que ten antecedentes nas culturas grega, romana e arábiga. Nas súasorixes xorden como unha evolución das escolas medievais coñecidas como studiumgenerale, que tiñan como misión educar aos empregados e monxes en niveis superioresaos que se ensinaba nas escolas monásticas e catedralicias. Nelas aprendíanse as artesliberais: gramática, lóxica, retórica, xeometría, aritmética, astronomía e música. Acontinuación, os alumnos tiñan a posibilidade de continuar os seus estudos nunha dasfacultades superiores: leis, teoloxía e medicina.Este esquema replícase por toda Europa Occidental de forma case homoxénea ata o séculoXVI no que a contidos se refire, pero con distintas variantes no relativo á administración exestión da institución, auspiciadas e fundadas por papas, emperadores e reis, que llespermitían gobernarse de forma autónoma, co requisito de non difundir nin o ateísmo nin aherexía. O prezo da autonomía, porén, era que as universidades se debían financiar elasmesmas. Desta forma os profesores cobraban honorarios e, para garantir a súa mantenza,tiñan que compracer aos seus estudantes. Estas primeiras universidades non tiñanedificios permanentes e posuían escasas propiedades, estando suxeitas á perda deestudantes e mestros descontentos que se podían desprazar a outra cidade e estabelecer oseu lugar de estudo aló. Esta foi a causa fundacional dalgunhas das máis prestixiosasuniversidades europeas.
50 ANOS DE INVESTIGACIÓN ECONÓMICA EN GALICIA, 1967-2017
Authors: GUISÁN SEIJAS María del Carmen
Published: March 2021

Presentamos unha contribución á historia da investigación económica en Galiciano período 1967-2017, a través da realización e dirección de numerosas teses doutorais,con especial referencia ao período 1992-2017 e enlazando a información académica dedirectores e autores. Tamén presentamos un resumo da información do período 1967-1991 xa publicada nun documento previo desta revista. Incluímos informacióncomplementaria sobre a difusión da investigación a nivel rexional, nacional einternacional. Dende unha perspectiva de xénero, observamos que a participaciónfeminina está por enriba das baixas porcentaxes habituais en moitas universidades deEuropa e do mundo, con niveis, en Galicia, superiores ao 40% dos autores das teses deeconomía, segundo os datos deste estudo.We introduce a contribution to the history of economic research in Galicia in theperiod 1967-2017, through the numerous doctoral theses written and directed in Galicia, withspecial reference to the period 1992-2017, and linking academic information of directors andauthors. We also provide a summary of the information for the period 1967-1991 alreadypublished in a previous document in this Journal. We highlight some complementaryinformation on research publications from Galicia, at regional, national and internationallevels. From a gender perspective, we observe favorable conditions for female participation,with levels over 40%, higher than those usual in most universities in Europe and the world.Keywords: Fifty years, Economics Research, Doctoral Theses, Galicia, History of SpanishUniversities, Female Economists at Universities
Strengthening Thin-Walled Knives with Nitrogen Plasma
Authors: Skoblo Tamara S. , Klochko Oksana Yu. , Avtukhov Anatoly K. , Romanchenko Vladimir N. , Plugatarev Artem V. , Rybalko Ivan N.
Published: March 2021

Introduction. The completed developments are aimed at creating a new technology for increasing the wear resistance of a thin-walled instrument of complex configuration made of steel 65G for cutting beets at sugar enterprises. The most important requirement to improve the operability and durability of such a tool is the preservation of its profile and cutting edge during operation.
Materials and Methods. A new developed equipment and technological process of strengthening using low-temperature nitrogen plasma were used to solve this problem. There have been determined optimal processing parameters that ensure the formation of a quasi-morphic structure on the friction surface that reduces the defectiveness of the cutting edge after its machining and also provides a process of self-sharpening due to tool strengthening on one side.
Results. The comparative studies of the friction surface of products after operational tests have shown that their resistance increase significantly when strengthening both new and used products. This is determined by the nature of the quasi-morphic structure formed and the specific relief in friction on the working surface.
Discussion and Conclusion. To describe the new process of strengthening thin-walled products, the structure formation on the friction surface was analyzed in detail with the use of metallographic images and its phase relationship variability was estimated by the optic-mathematical analysis of various zones (compression and vacuum) formed as friction bands. This was done trough modeling with the estimation of the distribution density of the conditional colors of the analyzed fragments.
Modeling Movement of Supports of Walking Machines with Dynamic Stability by Using a Stand
Authors: Aleynikov Yury G. , Didmanidze Otari N.
Published: March 2021

Introduction. Walking machines have been interesting for decades. Modern technologies make it possible to create new designs with digital control. Creating software that allows a walking machine to move independently is a difficult task. Walking machine onboard computer needs to process data from sensors in real time. The article demonstrates design and algorithms used to control the motion of an experimental walking machine.
Materials and Methods. To simulate the motion of a walking machine and experimental studies, a stand replicating all the electronic systems of the machine was made. The order of rearrangement of the supports during the motion and the trajectory of the support movement are shown. The design of sensors and their principle of operation are considered. The simulation bench with a description of its electronic components is demonstrated.
Results. The optimal parameters of the support motion are determined. A cyclic algorithm for specifying the motion of a support along a trajectory consisting of rectilinear segments is described. The problem of synchronization of motion of a set of supports using multithreaded asynchronous programming adapted for multidimensional processors has been solved. The process of lowering the support to the surface and the response of the cyclic algorithm to changes in the shock and load sensor readings are simulated.
Discussion and Conclusion. An algorithm for propulsion with reaction to changes in sensor readings has been developed. The conducted research allowed us to obtain an optimal algorithmic model of motion, to which it is easy to add new reactions of the automatic motion control system based on sensor readings.
Experimental Stand Movable Module for Determining the Traction-Linked Properties of Wheel Engines and the Results of Laboratory Researches for Determining the Traction Force of Two-Wheel Tractors
Authors: Kupryashkin Vladimir F. , Ulanov Aleksandr S. , Shlyapnikov Michail G. , Gusev Aleksandr Yu. , Slavkin Vladimir I.
Published: March 2021

Introduction. Farmers make extensive use of two-wheel tractors equipped with traction and drive interchangeable units. Two-wheel tractors are required to move evenly with minimal slip of the drive wheels on the soil. The tractive force on the drive wheels of the tillage unit is the decisive power factor in this case. An objective traction force value can be measured only by carrying out experimental studies. Materials and Methods. To determine the traction force on the drive wheels of the twowheel tractor, the design of the experimental stand was proposed and substantiated (RF patent for useful model No. 188610 “Movable module of the test stand”), and a methodology for planning and conducting a multifactor experiment to determine the traction force was developed. Results. As a result of the laboratory tests the calculation dependencies of the tractive force on the drive wheels of the Neva MB23-MultiAGRO Pro two-wheel tractor were obtained. Soil conditions, design and technological parameters, operating modes of the two-wheel tractor, and rolling resistance forces were taken into account. Discussion and Conclusion. The use of the developed regression models of the traction force under the condition of ensuring uniform movement with the minimum permissible slipping of the driving wheels of the two-wheel tractor on the soil will allow obtaining the permissible values of the two-tractor motion speed and form the zones of its most effective functioning.
Application of the Discontinuous Galerkin Method to the Study of the Dynamics of Temperature and Pressure Changes in a Formation with an Injection Well and a Hydraulic Fracture
Authors: Zhalnin Ruslan V. , Masyagin Victor F. , Peskova Elizaveta E. , Tishkin Vladimir F.
Published: March 2021

Introduction. In this article, the problem of temperature distribution in an oil-bearing formation with a hydraulic fracture and a vertical injection well is numerically modeled.
Materials and Methods. To describe the process of temperature distribution in the formation under the action of the fluid injected into the formation, the Fourier-Kirchhoff equation of convective heat transfer is used. To solve this equation, the discontinuous Galerkin method on staggered unstructured grids is used. To describe the process of pressure change in the formation under the action of the injection well, an equation is used that is obtained based on the continuity equation and Darcy’s law. To solve it, the discontinuous Galerkin method on an unstructured triangular grid is used. To parallelize the numerical algorithm, the MPI library is used.
Results. The article presents a numerical algorithm and the results of modeling the dynamics of the temperature fields in an oil reservoir with a hydraulic fracture and a vertical injection well.
Discussion and Conclusion. A numerical algorithm based on the discontinuous Galerkin method for math modeling of the temperature and pressure fields in a oil-bearing formation with a hydraulic fracture and injection well was developed and implemented. The results obtained for the distribution of temperature and pressure in the fracture are adequate and in good agreement with the specified initial-boundary conditions. Further work in this direction involves modeling on tetrahedral unstructured meshes for a more accurate study of the ongoing processes.
Determination of the Whitening Effect of Toothpastes on Human Teeth
Authors: Aydın Numan , Karaoğlanoğlu Serpil , Oktay Elif Aybala , Ersöz Bilge
Published: March 2021

Objective: The desire of individuals to have whiter teeth increases the interest in tooth whitening products. Our aim was to in vitro study the whitening effect of hydrogen peroxide, blue covarine and active charcoal containing whitening toothpastes on human teeth. Materials and Methods: A total of 40 extracted human incisor teeth were used in the study. To measure the whitening effect of toothpastes, the teeth were divided into four subgroups and placed in the phantom tooth jaw model. Then, daily brushing was done with an electric toothbrush. The colors of the teeth were measured initially using the spectrophotometer (single point and bleached shade mode) and at the end of 7th, 14th and 28th days. Whitening effectiveness of toothpastes were studied according to CIEDE2000 formula (∆E00) and shade guide units (SGU). One-way analysis of variance (ANOVA) and Tukey test were used in the statistical analysis of the data. (p<0.05). Results: Activated charcoal containing toothpaste showed the greatest whitening effect at the end of 7th, 14th and 28th days (p<0.05). There was no statistically significant difference between the whitening effects of hydrogen peroxide and conventional toothpaste (p>0.05). Blue covarine containing toothpaste had statistically the lowest whitening effect (p<0.05). Conclusions: All toothpastes showed a whitening effect on the teeth after 7 days of use. Activated charcoal containing toothpaste showed more whitening effect after 28 days of use than hydrogen peroxide, blue covarine and traditional toothpaste.
Prediction carbides composition in nickel-based superalloys directional crystallization
Authors: Glotka O.
Published: March 2021

Objective. To study the specifics of the distribution of alloying elements in the carbides of the multicomponent system Ni-5Cr-9Co-6Al-1Ti-11.7W-1.1Mo-1.6Nb-0.15C by directional crystallization, using the calculated method of CALPHAD prediction.
Research methods. To find regularities and calculate the distribution of alloying elements in the alloy, the latest CALPHAD method was chosen, and modeling of thermodynamic processes of phase crystallization was performed.
The obtained results. The results of thermodynamic calculations of the chemical composition of carbides are given in the form of mathematical dependences. The equation of the influence of alloying elements on the dissolution (release) temperature of carbides is obtained. It is shown that the obtained dependences are closely correlated with the thermodynamic processes occurring in the system.
Scientific novelty. It is shown that with increasing total concentration of carbide-forming elements, the chemical composition of carbides becomes more complicated. The titanium content of more than 2% leads to an increase in the temperature of the carbide liquidus, and at 4.5 % topologically densely packed phases is formed. When the concentration of molybdenum in the alloy is more than 4%, the probability of precipitating topologically close-packed phases in the structure increases markedly, which negatively affects the mechanical properties and heat resistance.
Practical value. Based on an integrated approach for multicomponent heat-resistant nickel-based alloys, new regression models were obtained that allow adequately predict the chemical composition of carbides by the chemical composition of the alloy, which allowed to solve the problem of calculated prediction of carbide composition by chemical composition of the alloy.
About design and use of powder plain bearings
Authors: Pleskach V. , Ol’shanetskii V.
Published: March 2021

Purpose. Optimization of methods of design, calculation and use of slip bearings; elaboration of recommendations on the use of powder materials and lubricants for the production of slip bearings.

Research methods. Analysis of existing calculations of slip bearings, of efficiency of the bearing under conditions of self-lubrication and features of using hydrodynamic lubrication theory for calculations of slip bearings in the presence of liquid lubrication.

Results. The area of predominant application of slip bearings, their main elements are clarified and described; recommendations on the sizes of structural elements of bearings are given. The main types of slipping friction and their relationship with the bearing design and operating conditions are analyzed.

The possible composition of powder materials for slip bearings, the interdependence of bearing porosity and the viscosity of the oil used to ensure the of its longevity is analyzed. Recommendations for the design of bearings in conditions of liquid friction are given. Generalized methodology for calculating the efficiency of slip bearings is proposed.

Based on the theory of hydrodynamic lubrication, a method for calculating slip bearings for liquid lubrication conditions, which provides optimal operating conditions is proposed.

Scientific novelty. Optimized selection of powder material and structure to improve lubrication conditions is proposed. The analysis of the influence of the chemical composition of the oil to ensure maximum adhesion of this oil with a bearing surface is resulted; the analysis of the influence of the chemical composition of the oil to ensure maximum adhesion of this oil with a bearing surface, as well as mathematical dependencies that make it possible to adjust the composition of the oil by adding specially selected microadditives is resulted. Generalized approaches to the method of calculation of powder slip bearings, which operating under different friction conditions are proposed.

Practical value. Practical methods of designing and calculating slip bearings from powder materials are offered.
Methods of increasing the reliability of turbine elements
Authors: Kravchuk Yu. , Tatarchuk Т.
Published: March 2021

The purpose of the work. Statistical and experimental analysis of coating methods on the turbine nozzle apparatus to increase the temperature regime.

Research methods. Calculation method of finite elements, experimental.

The results obtained. Studies have shown that the use of thermally protective coatings TZP thickness of 250 мm with a thermal conductivity of 1 W / mK on the two steps of the turbine can implement one of two possibilities:

- at constant operating temperature of the blade material to increase the temperature of the gas in front of the turbine by about 100 °C, which will increase efficiency and fuel savings by more than 13 %;- without changing the temperature of the gas in front of the turbine - to increase the durability of the blades by about 4 times, due to a decrease in their operating temperature. The analysis of two methods of drawing TZP was carried out, in the work the estimation of a temperature condition of the nozzle device (CA) of the turbine of a high pressure of the engine, decrease in its temperature due to drawing TZP and increase of its resource is carried out. The problem was solved by applying TZP on the blades of the nozzle apparatus. The analysis of two methods of drawing TZP was carried out, the estimation of a temperature condition of the nozzle device (CA) of the turbine of high pressure of the engine, decrease in its temperature due to drawing TZP and increase of its resource is carried out.

Scientific novelty. The problem of creating efficient, economical and reliable gas turbines is the most difficult among the many problems that arise in the development of gas turbine construction. Important elements of turbines are working and nozzle blades, the material and design of which determine the allowable gas temperature in front of the turbine and thus directly affect the technical and economic performance of the gas turbine engine.

Practical value. The obtained results are important for the further development of aircraft engine construction, due to the application of TZP achieved an increase in the resource of CA from 40,000 hours to 67,000 hours.
NDSHA - The New Paradigm for RSHA - An Updated Review
Authors: Bela J. , Panza G. F.
Published: March 2021

A New Paradigm (data driven and not like the currently model driven) is needed for Reliable Seismic Hazard Assessment RSHA. Neo-Deterministic Seismic Hazard Assessment (NDSHA) integrates earthquake geology, earthquake science, and particularly earthquake physics to finally achieve a New (and needed) Paradigm for Reliable Seismic Hazard Assessment RSHA.Although observations from many recent destructive earthquakes have all confirmed the validity of NDSHA’s approach and application to earthquake hazard forecasting-nonetheless damaging earthquakes still cannot yet be predicted with a precision requirement consistent with issuing a red alert and evacuation order to protect civil populations. However, intermediate-term (time scale) and middle-range (space scale) predictions of main shocks above a pre-assigned threshold may be properly used for the implementation of low-key preventive safety actions, as recommended by UNESCO in 1997. Furthermore, a proper integration of both seismological and geodetic information has been shown to also reliably contribute to a reduction of the geographic extent of alarms and it therefore defines a New Paradigm for TimeDependent Hazard Scenarios: Intermediate-Term (time scale) and Narrow-Range (space scale) Earthquake Prediction.
Nursing societies in Santa Catarina state (1975-2018)
Authors: Teixeira Gustavo da Cunha , Bellaguarda Maria Lígia dos Reis , Padilha Maria Itayra , Pires Denise Elvira Pires de
Published: March 2021

ABSTRACT Objectives: to understand nursing representative entities’ articulations and the influence on nursing. Methods: a qualitative study of a historical-social approach with a conceptual framework by nurse Denise Elvira Pires de Pires. With a historical profile from 1975 to 2018, five former presidents of Brazilian Nursing Association - Santa Catarina Section and Regional Nursing Board of Santa Catarina were interviewed. The methodology for understanding data was through Bardin’s content analysis. Results: the board structuring and performance generated changes in the relations between the two entities and debate about the role and power of representation of each one. There were periods of approach and removal, with consequences for professional representation effectiveness. Conclusions: nursing valuation and recognition as a profession in society has a strong influence on entities’ performance that represent it. The union of them, politically or organizationally, is necessary and urgent.
Instrument to evaluate the behavioral intention of hypertensive people when taking anti-hypertensives
Authors: Almeida Taciana da Costa Farias , Sousa Mailson Marques de , Gouveia Bernadete de Lourdes André , Olinda Ricardo Alves de , Freire Maria Eliane Moreira , Oliveira Simone Helena dos Santos
Published: March 2021

ABSTRACT Objectives: to build and analyze the validity of an instrument to assess the behavioral intention of individuals with hypertension to take antihypertensive pills. Methods: methodological study based on the theory of planned behavior, developed in three stages: preparation of the instrument, validation of content and pre-test with the target audience. The content has been validated by six experts. The Content Validity Index was applied. Results: five nurses and one psychologist participated, with experiences in systemic arterial hypertension and/or planned behavior theory. The first version of the instrument contained 40 items. After analysis, the second version originated, with 36 items. 100% agreement was obtained for the scope of the constructions. The pre-test showed clarity and understanding of the items by the target audience. Conclusions: the instrument is a reliable and innovative technological product for use in populations with systemic arterial hypertension and beliefs similar to those identified in the surveyed group.
Development, validation and application of clinical simulation scenarios for assessment of stomatherapy specialists
Authors: Almeida Angélica Olivetto de , Dantas Sônia Regina Pérez Evangelista , Paula Maria Angela Boccara de , Silva Juliany Lino Gomes , Franck Ednalda Maria , Oliveira-Kumakura Ana Railka de Souza
Published: March 2021

ABSTRACT Objectives: to build and validate three clinical simulation scenarios and report the application with candidates for the specialist’s degree in stomatherapy. Methods: methodological study, building three scenarios and evaluation checklists; content validation with judges, using content validity index and Modified Kappa Coefficient; pre-test and application. Results: scenarios built based on nursing care for: 1. insufficiency and venous ulcer; 2. demarcation of intestinal stomia; and 3. Clean intermittent catheterization. In the content validation of the 24 items appreciated, 83%, 80%, and 92% were validated without change. In the pre-test, the objectives and checklists were adjusted. In the application, to standardize the evaluation, actors and evaluators were trained previously, and each candidate passed the three stations. Conclusions: scenarios built and with validated content, based on evidence and covering the three areas of stomatherapy. The pre-test allowed for adjustments in the scenarios, and the candidates achieved the expected objectives.
Grape (Vitis vinifera L.) production and soil potassium forms in vineyard subjected to potassium fertilization
Authors: Ciotta Marlise Nara , Ceretta Carlos Alberto , Krug Amanda Veridiana , Brunetto Gustavo , Nava Gilberto
Published: March 2021

Abstract Potassium fertilization can change K forms available in the soil, as well as influence plant absorption of it and yield but, mainly, it can affect grape composition. The aim of the current study was to investigate the impact of potassium (K) fertilization on grape production and juice (must) composition of a Cabernet Sauvignon cultivar. Grapevines were treated with 0, 50, 100, 150 and 200 kg ha-1 year-1 K2O. Leaf K contents, grape yield per plant and area, total soluble solids (TSS), must pH and titratable acidity, and K available in the soil were assessed. Soil samples collected at the 20-cm layer were analyzed to measure K availability and nonexchangeable K in them, based on studies conducted over 3 growing seasons. Results have shown that K application did not have effect on grape production and must composition, although it increased K contents in leaf blade and petiole. However, annual K fractionation in the soil has suggested that 100 kg ha-1 year-1 K2O is the K dose capable of maintaining K availability to plants at more appropriate contents throughout the growing seasons.
O TEMA DA PROSTITUIÇÃO EM PUBLICAÇÕES RELACIONADAS COM OS ESTUDOS ORGANIZACIONAIS
Authors: Cerqueira Paulo Rodrigues , Misoczky Maria Ceci
Published: March 2021

RESUMO Este artigo apresenta o tema da prostituição em publicações do campo dos Estudos Organizacionais. Foi realizada uma leitura interpretativa das publicações encontradas em periódicos nacionais e internacionais do campo, que resultou na organização de três conjuntos de textos. o primeiro compreende publicações que analisam a prostituição considerando aspectos relacionados à psicodinâmica; o segundo inclui textos que abordam os corpos e seus papeis em trocas que ocorrem em serviços comerciais de sexo, nos quais a prostituição está incluída; e o terceiro que compreende publicações que buscam analisar a relação da prostituição com as estruturas sociais e econômicas. Seguem as considerações finais, nas quais indicamos lacunas e potenciais desenvolvimentos.
A PANORAMA OF MARIANA AND BRUMADINHO DISASTERS: WHAT DO WE KNOW SO FAR?
Authors: Fabrício Sarah Amaral , Ferreira Denize Demarche Minatti , Borba José Alonso
Published: March 2021

ABSTRACT In 2015, the Fundão dam of the company Samarco (controlled by Vale) collapsed, causing a huge wave of mud, causing 19 deaths and becoming the biggest environmental disaster in Brazil. As early as 2019, a new dam rupture took place, with Vale as the responsible company, with around 270 fatalities. Both disasters brought numerous social, environmental and financial problems. This study aims to analyze the impact of environmental disaster of Brumadinho and Mariana on Vale and Samarco Financial Statements, specifically the problems related to provisions, contingencies and environmental processes. The method employed with the case study was a content analysis, and data collection was carried out from Financial Statements, Reference Form and the company’s press channel over a 10-year period from 2010 to 2019. Among the main results, we observed that in 2015, the Mariana dam collapse may explain the significant increase in the coming years regarding deposits and provisions for environmental actions filed against Samarco and Vale. In 2019, it is observed that the amount moved to judicial deposits increased 45 times compared to the previous year. Considering this fact, there is a need for studies that contribute to the transparency of actions for the victims, communities affected by the tragedy, disregard of those involved and the environment, since this is not the first disaster caused by this company.
UMA ANÁLISE DA PRODUÇÃO ACADÊMICA SOBRE O TECHNOSTRESS (2000-2020)
Authors: Beltrame Gabriela , Bobsin Debora
Published: March 2021

RESUMO O objetivo dessa pesquisa consiste em apresentar o panorama de pesquisa sobre o technostress em nível mundial nos últimos 21 anos utilizando a base de dados Web of Science. Realizou-se um estudo bibliométrico a fim de identificar aspectos fundamentais da disseminação das publicações acadêmicas, além de avaliar e comparar a produção científica dos autores que mais publicaram versus artigos mais citados no período, entre outros indicadores. Foram analisados 327 artigos, publicados entre os anos 2000 e 2020, além de uma análise profunda nas 10 publicações mais citadas. Os resultados evidenciaram que o número de publicações cresceu a partir do ano de 2015, sendo Monideepa Tarafdar o autor com maior número de publicações e os EUA o país de onde resultaram a maioria dos trabalhos. Foi constatado que das 10 publicações mais citadas, 7 são de autores que mais publicam sobre o tema, tendo como uma das exceções o segundo artigo mais citado na base de dados. Por fim, evidencia-se que o technostress é um tema emergente, com publicações que provêm de um grande número de pesquisadores, Instituições e periódicos do mundo inteiro, contudo o número é ainda reduzido em cada uma dessas categorias.
O “DIREITO DE NOBREZA” NA CULTURA JURÍDICO-POLÍTICA DO BRASIL IMPERIAL
Authors: Fonseca Álvaro Monteiro Mariz
Published: March 2021

Resumo Este trabalho pretende esclarecer a arquitetura jurídico-política dos títulos, honras, ordens militares, distinções e mercês pecuniárias, acerca do pretenso direito de nobreza na cultura jurídico-política brasileira do século XIX. Nesse sentido, ele busca compreender como o direito brasileiro previa essas recompensas honoríficas, e se a elas se vinculava algum tipo de privilégio jurídico. As fontes principais são a Constituição Política do Império do Brasil (1824), os comentários doutrinários ao texto constitucional e os Anais do Parlamento Brasileiro. A interpretação dessas fontes permite concluir que, de fato, o sistema constitucional imperial repugnava a existência de privilégios de nascimento, sem, contudo, ter conseguido impedir, totalmente, que resquícios de direitos de Antigo Regime resistissem por algum tempo na legislação ordinária do Império.
RASTROS DA VIOLÊNCIA: A TESTEMUNHA
Authors: Sarti Cynthia
Published: March 2021

Resumo Este texto tem como objetivo discutir a figura da testemunha, a partir da apreensão de seus sentidos nas memórias de experiências de violência, partindo de uma pesquisa sobre a memória da ditadura militar brasileira (1964-1985), da qual emergiram as indagações. Embora a testemunha possa coincidir com a vítima que sofreu diretamente a experiência da violência, essas figuras não se confundem. Na abordagem aqui proposta, a testemunha transcende a experiência da violência, sendo tratada em um registro distinto daquele da ocorrência da violência. A testemunha constitui-se no desenrolar do trabalho da memória a partir da inclusão de quem não estava lá, mas se dispõe a ouvir o relato da dor do outro, colocando a alteridade no centro do processo de elaboração do sofrimento. Nesse sentido, argumenta-se que o trabalho de pesquisa configura um modo de testemunhar.
DANIEL MILLER E OS ESTUDOS DE CONSUMO NO BRASIL
Authors: Barbosa Livia
Published: March 2021

Resumo O texto tem como primeiro objetivo rever as propostas teóricas desenvolvidas por Daniel Miller acerca do significado da cultura material no contexto das produções acadêmicas das ciências sociais em seu hoje clássico Material culture and mass consumption. Nesse livro Miller não só propõe uma teoria geral do consumo como apresenta uma releitura do processo de objetificação, como desenvolvido por Hegel, e a partir desse oferece nova leitura para as contradições da sociedade contemporânea. Em um segundo momento, as ideias desenvolvidas pelo autor naquela oportunidade são examinadas em seu entrelaçamento com suas produções e pesquisas posteriores simultaneamente a sua influência teórica em alguns dos temas dos estudos de antropologia e consumo no Brasil, sobressaindo-se os realizados sobre consumo entre os segmentos na base da pirâmide social e os de antropologia digital.
NOT EVEN THE SKY IS THE LIMIT: THE MEANINGS OF CONSUMPTION AND THE DYNAMICS OF SOCIAL MOBILITY ON THE @blogueiradebaixarenda PROFILE ON INSTAGRAM AND YOUTUBE
Authors: Barros Carla
Published: March 2021

Abstract The article sets out to explore the meanings surrounding consumption on the @blogueiradebaixarenda profile on the Instagram and YouTube online social networks, considering the perceptions of materiality and their articulations with the dynamics of social mobility. It analyses the elements making up the “low-income lifestyle” as a native category within the context of “digital influencers.” Through online observational research, the posts, hashtags and comments on both social media platforms were analysed, seeking to explore how consumption practices appear as mediators of social dynamics and identity constructs. Among the results, the articulations between materiality and social mobility, the idea of minimalism within the “low-income lifestyle” and the blogger’s status as a cultural mediator are highlighted.
AS PESSOAS, AS COISAS E AS PERDAS: PERSPECTIVAS DA CULTURA MATERIAL E DO CONSUMO NOS ESTUDOS DE DANIEL MILLER
Authors: Pereira Cláudia , Martinelli Fernanda
Published: March 2021

Resumo Na sociedade de consumo, as relações entre pessoas, coisas e significados se estendem por territórios vastos e diversificados. Neste artigo, enfatizamos a construção ontológica que se dá entre pessoas e coisas, coisas e pessoas, para além das trocas simbólicas, coletivas e públicas, promovida pelo consumo. Propomos uma reflexão sobre as relações que pessoas estabelecem com coisas em situações de luto, expressão que utilizamos para nos referir não somente ao sentimento associado à morte de pessoas, mas, de modo amplo, ao sentimento de perda de materialidades. Metodologicamente, a contribuição de Daniel Miller está na abordagem antropológica e etnográfica das relações dialéticas entre pessoas e coisas, e entre coisas e pessoas, que discutimos aqui a partir de conceitos como “objetificação”, “humildade dos objetos” e “poder da agência”.
ANOS REBELDES E A ABERTURA DA TELEFICÇÃO
Authors: Pinheiro Dimitri
Published: March 2021

Resumo O artigo aborda Anos rebeldes, minissérie da Rede Globo de Televisão veiculada entre junho e agosto de 1992. Primeira incursão explícita da teleficção da emissora pelo tema regime militar, a exibição do programa coincide com um momento decisivo no processo de democratização política do país: a campanha Fora Collor. A análise delineia telegraficamente as condicionantes gerais, as circunstâncias de produção e o enredo da minissérie, enfatizando uma vertente de suas tramas. O objetivo é examinar diferentes figurações da indústria cultural na teleficção brasileira com rebatimentos reflexivos sobre a própria atitude dos estudos em relação ao objeto. Longe dos juízos depreciativos acerca do “des-valor inerente” aos bens simbólicos associados ao polo ampliado de produção cultural, o argumento sustentado aqui é o de que tais objetos sempre desempenham funções práticas, econômicas, sociais, políticas e culturais insuspeitadas que justificam o esforço de uma análise sociológica.