bluuebunny/crossref_metadata_2025 huggingface dataset:
ABOUT ONE APPROACH TO MODELING OF OPTIMAL CONTROL OF MULTIDIMENSIONAL COMPOSITE LINEAR SYSTEMS
Authors: Gorelov Y.N.
Published: October 2020

The approach to the synthesis of optimal control of multidimensional composite linear system based on solutions of optimal control problems for inclusion in its structure of partial linear systems with scalar controls is considered. Control tasks are reduced to the problem of moments in the L\ space for minimum functionals of the norm type, on minimum maximal Ноlder norms level (with indicators 2 and то) for the vector control composite system.
HOPF BIFURCATION IN THREE-DIMENSIONAL SIRS-MODEL WITH DIFFUSION
Authors: Kravets P.M.
Published: October 2020

In this paper, modified 3D epidemiologic SIRS model with the so-called saturation incidence is considered. In the course of research the considered model was enlarged by means of adding spatial constituent and diffusion process. The aim of the work is to prove the existence of spatial heterogeneous periodic solutions in the system that takes place when bifurcation of periodic solutions happens not only along temporal but spatial variable and to simulate them numerically.
THERMAL-CONTROL SYSTEM OF EXPERIMENTAL MODEL OF SPACECRAFT OPTICAL TELESCOPE ASSEMBLY
Authors: Tsaplin S.V. , Bolychev S.A.
Published: October 2020

Software on the base of program package of ANSYS, MathCAD, Zemax for study of influence of thermal factors of space factor on optical characteristics of lens objective of spacecraft is developed. Calculation of non-stationary field of temperature and deformation, output data of lens objective for specific case is carried out.
NUMERICAL PHOTOMECHANICS: NUMERICAL PROCESSING OF PHOTOELASTICITY EXPERIMENTS AND ITS APPLICATION TO THE PROBLEMS OF FRACTURE MECHANICS PROBLEMS
Authors: Gerasimova T.E. , Lomakov P.N. , Stepanova L.V.
Published: October 2020

On the basis of photoelasticity method the experimental study of near crack tip stressed strain state in specimens under mixed loading conditions is performed. Carried out experimental investigation allows to obtain coefficients of full asymptotic expansions of stress and displacement fields in the vicinity of the crack tip and alos to find coefficients of highest approach in Williams full asymptotic expansion.
MATHEMATICAL MODELING OF A MEDIUM INTERACTION ONTO RIGID BODY AND NEW TWO-PARAMETRIC FAMILY OF PHASE PATTERNS
Authors: Andreev A.V. , Shamolin M.V.
Published: October 2020

Mathematical model of a medium interaction onto a rigid body with the part of its interior surface as the cone is considered. The complete system of body motion equations which consists of dynamic and kinematic parts is presented. The dynamic part is formed by the independent three-order subsystem. New family of phase patterns on phase cylinder of quasi-velocities is found. This family consists of inﬁnite set of topologically non-equivalent phase patterns. Furthermore, under the transition from one pattern type to another one, the reconstruction of topological type occurs by the degenerate way. Also the problem of key regime stability, i.e., rectilinear translational deceleration, is discussed.
EMPIRICAL ANALYSIS OF APPROXIMATE ALGORITHMS FOR INTEGER PROGRAMMING, BASED UPON THE IDEA OF GREEDY CHOICE
Authors: Montlevich V.M. , Ismailova A.N.
Published: October 2020

The article contains the results of empirical studies of heuristic algorithms for integer programming based upon the idea of greedy choice. On the base of numerous computer experiments estimate of average level of inaccuracy of approximate solution are presented.The article contains the results of empirical studies of heuristic algorithms for integer programming based upon the idea of greedy choice. On the base of numerous computer experiments estimate of average level of inaccuracy of approximate solution are presented.
INFLUENCE OF THE SADDLE-SPLAY CONSTANT ON THE DIRECTOR FIELD DISTRIBUTION IN STRONG MAGNETIC FIELDS
Authors: Kudreyko A.A. , Migranova R.N. , Khaﬁzov A.R.
Published: October 2020

The role of anchoring eﬀects in thin nematic ﬁlms conﬁned between two parallel plates was theoretically examined. The bulk and surface free energy densities weree xpanded up to O(e2) and the perturbated contributions were calculated. It is shown that the minimum of the free energy corresponds to the solution of the Euler-Lagrange equations and satisﬁes the Ericksen inequalities. The identiﬁed bifurcation points can estimate the inﬂuence of the saddle-splay constant k24 towards periodic perturbations of a director in the presence of strong magnetic ﬁeld.
DETERMINATION OF MOLECULAR WEIGHT AND BOILING TEMPERATURE OF UNKNOWN COMPONENTS OF A MIXTURE BY MEANS OF CHROMATE-DISTRIBUTIVE METHOD
Authors: Arutyunov Yu.I. , Onuchak L.A. , Vavrushko V.V. , Mikhailov I.Yu.
Published: October 2020

New technique, allowing to increase the accuracy of determination of molecularweight andboiling temperature of unknown components of analyzing mixture, in comparison with our work described in the journal ”Sorption and Chromatographic Processes” 2011, № 4. and based on information on sizes of indexes of retention of Van den Dool and Krats and indexes of the logarithm of constant of distribution in the system ”hexane - acetonitrile”is suggested.
STUDY OF CHEMISTRY OF FORMATION OF BARIUM AZIDE
Authors: Shekina S.A. , Kukushkin I.K. , Rekshinskiy V.A. , Pyghov A.M. , Purygin P.P.
Published: October 2020

This article proposes a chemism of the barium azide formation through monoazidometilat barium. The results obtained allowed to eliminate possible stops of the process due to formation of gelatinous mass by varying duration of the process.
INFLUENCE OF TOBACCO SMOKING ON THE FUNCTIONAL STATE OF A BODY OF YOUNG MALE RESIDENTS OF MAGADAN REGION
Authors: Vdovenko S.I. , Sukhanova I.V.
Published: October 2020

In the investigation carried out with the participation of 87 smokers and 60 nonsmokers of young male residents of Russia’s northeast, the changes in morphofunctional parameters in dependence on their relevance to smoking were investigated. It was found out that no signiﬁcant diﬀerence between the groups was observed in basic somatometric values as well as in the body cardiorespiratory or gasotransporting system. At the same time the revealed changes testify to the tendency towards higher tension in the work of body functional systems shown by the people who abuse smoking.
EFFECT OF MEMBRANE DEPOLARISATION OF SUPRACHIASMATIC NUCLEUS NEURONS ON SPIKE ACTIVITY IN VITRO
Authors: Inyushkin A.N. , Tkacheva M.A. , Petrova A.A. , Ryazantseva T.V. , Parfenova A.V.
Published: October 2020

The properties of spike activity of neurons of the suprachiasmatic nucleus during their membrane depolarisation in vitro are investigated on rat hypothalamic slices. Depolarisation of membrane caused an increase in activity of cells and a decrease in entropy log interspike interval distribution were used as a measure of spikes irregularity generation. Possible mechanisms of the eﬀects are discussed.
INTEGRABLE SYSTEMS ON TANGENT BUNDLE OF MULTI-DIMENSIONAL SPHERE
Authors: Pokhodnya N.V. , Shamolin M.V.
Published: October 2020

The systems which have ﬁnite-dimensional spheres as the space of positions, are arising in many problems of multi-dimensional dynamics. Accordingly, tan- gent bundles of those spheres become phase spaces of such systems. In the article activity of inductive transition in the system on tangent bundle of low-dimen- sional sphere under increase of its dimension and absence of force ﬁeld is ana- lyzed. At that, nonconservative ﬁelds of forces are presented with the presence of which the systems possess the complete choice of ﬁrst integrals expressing in terms of ﬁnite combination of elementary functions and are, in general, the transcendental functions of its variables.
CREATION OF A TREE OF PHASES OF THE FOURFOLD MUTUAL SYSTEMS Na,Ba∥F,Cl,WO4
Authors: Morgunova O.E. , Loseva M.A. , Trunin A.S. , Katasonova E.A.
Published: October 2020

Multicomponent system is the basis for the development of compositions withdesired properties. Previously, the study of topology of multicomponent systemswas carried out using graph theory (method of indices of vertices). Due to thecomplex topological structure of component relationships, the study of such systemsis currently underway with the use of innovative methods: computer simulationand experimental study using the capabilities of modern hardware andsoftware of the experiment. In the framework of the innovative methodology ofthe study the reciprocal Quaternary system Na,Ba||F,Cl,WO4, at the level splittingin stable Association phases. The tree phases was confirmed experimentallyby means of DTA and XRD.
INFLUENCE OF PRESEEDING PROCESSING OF SEEDS OF FLAX ON GROWTH AND BIOCHEMICAL INDICATORS OF SPROUTS
Authors: Purygin P.P. , Vasilyeva T.I. , Purygin V.A. , Sovetkin D.A. , Tsaplev D.A.
Published: October 2020

Due to the continuous reduction of the areas for crops and increase of urbanpopulation, the increase in productivity of crops is especially importantaspect in production of food today. One of problems of agriculture is creationof conditions for receiving a crop. Quality of a crop of various crops depends onefficiency of preseeding processing of seeds. This research investigated a methodof impact of preseeding processing of seeds of flax by a complex of physicalfactors: ultra-violet radiation, ozone and the magnetic field (MF) with induktionof 100, 200, 250 and 300 Gs on growth and activity of a catalase andperoxidase of a plant, and also the maintenance of photosynthetic pigments inflax sprouts.
GRAPH MODEL OF INTERACTION OF ANTHROPOGENIC AND BIOTIC FACTORS FOR THE PRODUCTIVITY OF THE CASPIAN SEA
Authors: Perevaryukha A.Yu.
Published: October 2020

In this paper the construction of the graph model, structuring multivariate analytical reports on the interaction of natural and anthropogenic factors in the ecosystem, which were presented in the form of a set of related concepts is presented. In the signed directed graph in the computing environment a propa- gation of pulses from the vertices within the context the study the situation of degradation of sturgeon stocks of the Caspian Sea was analyzed. These species are included in the Red Book since 2010 despite eﬀorts in organizing an ar- tiﬁcial breeding of ﬁsh. Method of cognitive structurization allowed to reveal hidden feedback loop on the basis of the graph, weakens the reproduction of ﬁsh populations and become the cause of overestimation acceptable exploitation of bioresources. An approach of functional iteration for describing the dynamics of population processes with nonlinear function of the eﬃciency of reproduc- tion was discussed. It is shown that the discrete iteration have contradictory qualitative behavior of the trajectory in terms of biological interpretation of bi- furcations. It is proposed to use the predicative redeﬁned computing structure based on the chart of behaviors for the description chain of regime changes of the simulated process. For this type of structural changes is promising to allocate substantial ﬂuctuations of growth rate in the early ontogenesis of ﬁsh.
Global theorem of existence and uniqueness of the ﬁrstboundary value problem for nonlinear integrodiﬀerential equations ofparabolic type
Authors: Filatov O.P.
Published: October 2020

Global theorem of existence and uniqueness of solution of the ﬁrst boundary value problem for nonlinear integrodiﬀerential equation of parabolic type is proved. If the right-hand side of the equation is integrally bounded, then we have estimate of the norm of the diﬀerence of two solutions, which implies continuous dependence of solution on the initial function and uniqueness of so- lution of the ﬁrst boundary value problem. The problem under consideration generalizes the real model for measuring the level of incompressible ﬂuid in the fuel tanks missiles. Therefore, such problem have a current application.
Digital image processing in interference-optical methodsof solid mechanics
Authors: Gerasimova T.E.
Published: October 2020

In the paper the detailed review and comparison of modern methods of digital object processing in present-day interference optical techniques (namely, photomechanics) are given. The methods of fringe thinnig, fringe clustering, fringe tracing are discussed. Applications of methods to digital photomechanics and fracture mechanics parameter determination are considered. The example of cracked semidisc for compression is analyzed.
Asymptotic classiﬁcation of solutionsto the second-order Emden - Fowler type diﬀerential equation with negativepotential
Authors: Dulina K.M. , Korchemkina T.A.
Published: October 2020

Consider the second-order diﬀerential equation of Emden - Fowler type with negative potential y′′ - p (x, y, y′) |y|sgn y = 0: The function p (x; y; y′) is assumed positive, continuous, and Lipschitz continuous in y, y′: In the case ofsingular nonlinearity (0 k 1) the solutions to above equation can behavein a special way not only near the boundaries of their domains but also near internal points of the domains. This is why a notion of maximally uniquely extended solutions is introduced. Asymptotic classification of non-extensible solutions to above equation in case of regular nonlinearity (k 1) and classification of maximally uniquely extended solutions to above equation in case of singular nonlinearity (0 k 1) are obtained.
ON A MINIMIZATION PROBLEM FOR A FUNCTIONAL GENERATED BY THE STURM – LIOUVILLE PROBLEM WITH INTEGRAL CONDITION ON THE POTENTIAL
Authors: Ezhak S.S.
Published: October 2020

In this article we consider the minimization problem of the functional generated by a Sturm — Liouville problem with Dirichlet boundary conditions and with an integral condition on the potential. Estimation of the infimum of functional in some class of functions y and Q(x) isreduced to estimation of a nonlinear functional non depending on the potential Q(x). This leads to related parameterized nonlinear boundary value problem. Upper and lower estimates are obtained for different values of parameter.
Inverse problems for the heat equation
Authors: Zaynullov A.R.
Published: October 2020

The inverse problem of ﬁnding initial conditions and the right-hand side had been studied for the inhomogeneous heat equation on the basis of formulas for the solution of the ﬁrst initial-boundary value problem. A criterion of uniqueness of solution of the inverse problem for ﬁnding the initial condition was found with Spectral analysis. The right side of the heat equation is represented as a product of two functions, one of which depends on the spatial coordinates and the other from time. In one task, along with an unknown solution is sought factor on the right side, depending on the time, and in another - a factor that depends on the spatial coordinates. For these tasks, we prove uniqueness theorems, the existence and stability of solution.
On the maximum principle for a class of nonlinear parabolicequations
Authors: Kon’kov A.A.
Published: October 2020

In this paper, we consider solutions of nonlinear parabolic equations in the half-space.It is well-known that, in the case of linear equations, one needs to impose additional conditions on solutions for the validity of the maximum principle. The most famous of them are the conditions of Tikhonov and T¨acklind. We show that such restrictions are not needed for a wide class of nonlinear equations. In so doing, the coeﬃcients of lower-order derivatives can grow arbitrarily as the spatial variables tend to inﬁnity.We give an example which demonstrates an application of the obtained re- sults for nonlinearities of the Emden - Fowler type.
ROLE OF POLYMORPHIC GENE VARIANTS SOD2, GSTT1, GSTM1 AND GSTP1 IN THE DEVELOPMENT OF BREAST CANCER OF WOMEN OF CHECHEN POPULATION
Authors: Bisultanova Z. I. , Atsayevа M. M. , Dzhambetova P. M.
Published: October 2020

In the study, we investigated the role of polymorphic variants of genes of antioxidant protection SOD2 T / C (Ala16Val), GSTP1 A / G (Ile105Val), GSTM1 and GSTT1 Ins /Delin the development of malignancies (External testing) chest 564 women (208 women diagnosed with breast cancer (BC), 356 control group) of the Chechen population. For the studied populations have an increased frequency of polymorphisms Ala16Val, associated with the formation of malignant tumors, including breast External testing, but the differences are statistically insignificant character. The results showed no association between the presence of polymorphic variants SOD2 Ala16Val (T / C), GSTP1 (A / G), as well as deletions of genes GSTM1 and GSTT1 and the development of breast cancer in women of Chechen populations of cancer.
NONLINEAR MODEL OF OVERFISHING FOR THE VOLGA STURGEON BASED ON COGNITIVE GRAPH OF INTERACTION OF ENVIRONMENTAL FACTORS
Authors: Perevaryukha A. Yu.
Published: October 2020

We have discussed the development of models of dynamics of formation of reserves juveniles from natural spawning sturgeon Acipenser gueldenstaedtii of theCaspian Seaon historical data. Working hypotheses are based on the graph conceptual scheme aimed chain links. Structuring multivariate analytical conclusions about the quality of the interaction of 12 natural and anthropogenic factors in the ecosystem of the Caspian Sea have allowed us to recharge from the general ideas of the theory on to describe the specific situation of the tragic consequences of overfishing of anadromous fish with a long lifecycle. Reducing the word was swiftly enough and not consistent with the expectations of the replenishment of stocks by artificial reproduction. Dedicated contact circuit pulse propagation cognitive digraph where arcs contains the power of influence, says an indirect strengthening of action depends on the density of mortality. Interestingly, the relationship did not have a permanent independent sign + or . Recessions manifested dramatically on both boundaries of the range of optimum number of spawning manufacturers. Perhaps the decline in the efficiency of the reproduction right of the balance associated with the migration routes overlap. It is more intense withdrawal of fish more prolific race hibernating until spring in the river. The model takes into account the additional effect of increasing variations in the pace of development of the size on the survival of migrating hatchery. The system of differential equations is investigated in an iterative discrete continuous hybrid form with alternative position of equilibrium trajectory. One of the equilibrium is unstable, and is the starting point for the degradation of reproductive activity. The proposed model of reproduction under supercritical level seizures shows subtle transition from the brink of fading fluctuation to the permanent historical perspective depletion, the way into the Red Book.
Development of a virtual prototype of gasturbine engine at the stage of conceptual thermogasdynamic designusing the CAE-system «ASTRA»
Authors: Tkachenko A. Yu. , Krupenich I. N.
Published: October 2020

Computer-aided system of gas turbine engine calculation and analysis (ASTRA) developed at the Aircraft Engine Theory department of Samara State Aerospace University is described. Its functional capabilities and development of gas turbine engine simulators for various initial-stage design tasks are described.
Regulating Flexibility: Uber’s Platform as a Technological Work Arrangement
Authors: Oppegaard Sigurd M. Nordli
Published: October 2020

When initiating its Norwegian operations, the transportation platform Uber adjusted its business model to the Norwegian regulation of the taxi market by focusing on its high-end offering, Uber Black, organized through limousine companies who employ the drivers and own the cars. The Uber Black drivers in Oslo are classified as employees and endowed with a substantially flexible work arrangement. Based on a ‘traveling ethnography’ among Uber Black drivers in Oslo, this article conceptualizes Uber’s digital platform as a technological work arrangement. The analysis shows that while the platform is experienced as an opaque form of management that limits the drivers’ formal flexibility, the effects of the technological work arrangement is contingent on the drivers’ formal work arrangement and the characteristics of the Uber Black market in Oslo.
Are the Early Leavers the Lucky Ones?
Authors: Virtanen Pekka , Jolkkonen Arja , Koistinen Pertti , Kurvinen Arja , Lipiäinen Liudmila , Nummi Tapio
Published: October 2020

According to previous studies, major workforce downsizings are commonly preceded by increased employee turnover due to ‘early leavers’. There is a common belief that early leavers are winners in terms of re-employment. This seven-year follow-up study based on register data from Finland questions if this is a valid finding in the Nordic context. We set the hypothesis that early leavers are not undisputed winners compared with those who leave during the actual downsizing. Trajectory and sequence analyses were used to test the hypothesis. Six employment trajectories were identified, ranging from permanently strong to permanently weak labor market attachment. Supporting the hypothesis, the early leavers assumed more commonly the weak and less commonly the strong employment trajectory. However, within the weak employment group, the early leavers and ultimately displaced workers were equal in terms of unemployment and retiring, as well as within the strong employment group in terms of income level.
Freedom but Insecurity: the Business Consulting Profession in the Post-Industrial Service Society
Authors: Haapakorpi Arja
Published: October 2020

In the post-industrial era, the service sector has been expanding and professional tasks have been transformed into service-oriented knowledge work, that is, the business consulting profession. The variety of employment patterns has increased with the deregulation of the labor market, and the employment pattern of those professionals working in the service sector has been characterized by short-term assignments and employment contracts. Despite this contingent employment, the position of the business consulting professionals in the labor market is not necessarily degrading, as they are highly-qualified and competent actors, who can deal with the challenges of the business world. Thus, their position and coping strategies relate not only to the precarious employment but also to their professional, independent work. The study deals with the dilemma of insecurity and freedom of business consulting professionals, which is recognized in the Nordic countries. The methodology is qualitative.
COMÉRCIO INTERNACIONAL E DESENVOLVIMENTO SOCIOAMBIENTAL: UM ENTENDIMENTO DA TEMÁTICA EM QUESTÃO
Authors: Moreira Antônia Amanda Alves Pereira , Ribeiro Henrique César Melo , Castro Magna Da Silva Vilanova , Bruno Matheus Morais
Published: October 2020

O fenômeno globalização ocasionou grandes transformações nos últimos anos no cenário econômico nacional e internacional. Frente à globalização e a expansão do comércio internacional, o mercado passou a estar cada vez mais exigente e o consumidor adquiriu novas preocupações, uma delas é a preocupação socioambiental que fez com que as empresas passassem a aderir novas mudanças de atitude. O presente estudo tem como objetivo principal entender a relação existente entre comércio internacional e desenvolvimento socioambiental mediante informações coletadas em estudos bibliográficos disponíveis na literatura nacional. A metodologia adotada para a realização da pesquisa se constitui como uma pesquisa bibliográfica com abordagem qualitativa. No atual estágio de globalização, inúmeros requisitos ambientais e sociais foram e estão em definição. Trata-se de um momento que exige grande conscientização e intensa participação os setores envolvidos nesse processo e portando, constatou-se que o comércio internacional apresenta uma relação estreita com o meio ambiente e o ser humano, e está relação assegura o funcionamento do sistema econômico de um país, fomentando assim o crescimento das nações.
SZUBJEKTÍV EGÉSZSÉGÉRZET ÉS A FIZIKAI AKTIVITÁS KAPCSOLATÁNAK VIZSGÁLATA KÖZÉPISKOLÁSOK KÖRÉBEN
Authors: Szerdahelyi Zoltán
Published: October 2020

Egészségi állapotunk megítélésének számos módszere alakult ki a tudományos ismeretek bővülésével párhuzamosan. Az orvostudomány objektív módszerekkel, mérhető változókkal írja le egészségi állapotunkat. Természetesen nekünk is van képünk a saját egészségi állapotunkról, mely minden szubjektivitása ellenére jó indikátora a testi-lelki folyamatainknak. Az egészségérzetünk hiteles tükre lehet az egészségi állapotunknak, mely közvetlenül és közvetetten is kihat a munkahelyi/iskolai teljesítményünkre. A fizikai aktivitás növekedésének az egészségre gyakorolt jótékony hatásairól folyamatosan bővülő ismeretekkel rendelkezünk, hatásmechanizmusát számtalan aspektusból értelmezhetjük. A középiskolás korosztály egészségi állapotának és fizikai aktivitásának vizsgálata hasznos információkat hordoz az egyén, a szülők és az oktatás területén (oktatáspolitikusok és pedagógusok) dolgozók számára. Jelen kutatás során a fizikai aktivitás (WHO ajánláshoz viszonyított) szintje és a középiskolások egészségérzete, iskolai teljesítménye, valamint a különböző emocionális tényezők megjelenése közti kapcsolatot vizsgálatára került sor, kiegészítve a 14-18 éves korosztály mozgással kapcsolatos motivációs hátterének tanulmányozásával. Az elemzés során szignifikáns kapcsolat jelent meg a fizikai aktivitás magas szintje és az egészségérzethez tartozó számszerűsített érték magas értéke között. Az iskolai teljesítmény és a fizikai aktivitás szintje között nem találtunk szignifikáns összefüggést. Az emocionális tényezők között szignifikáns kapcsolatot tapasztaltunk a boldogság, életkedv, energikusság, valamint a szomorúság és a fáradtság kategóriák fizikai aktivitással történő összehasonlítása során. A mozgásos motívumok között kiemelkedő helyet foglal el a fizikai állapot javítása, és egyértelműen elutasító ez a korosztály a másoknak való megfeleléssel szemben. Szintén tanulságos a testi nevelés területén dolgozók számára, hogy a mozgás élményszerűsége meg-határozó a korosztály tagjai számára.
PERCEPÇÃO DE IMIGRANTES AFRICANOS SOBRE O ATENDIMENTO NOS SERVIÇOS DE SAÚDE DE PORTUGAL
Authors: Do Sacramento Saionara Costa , Ferrão Marília Araújo , De Camargo Climene Laura , Ramos Maria Natália Pereira , De Moraes Maria Cecilia Leite , Martins Lucas Amaral
Published: October 2020

Objetivo: conhecer a percepção do imigrante africano sobre o atendimento nos serviços de saúde de Portugal. Método: estudo descritivo com abordagem qualitativa, realizado na Grande Lisboa, Portugal, no período de março de 2017 a janeiro de 2018. Para coleta dos dados utilizou-se a entrevista semiestruturada com imigrantes africanos. A estratificação das informações foi guiada pela análise de conteúdo. Resultados: constatou-se que os serviços de saúde mais utilizados foram os Centros de Saúde e Hospitais; a assistência recebida é de boa qualidade, apesar da dificuldade de acesso, causada pelo longo tempo de espera. Evidenciou-se que as diferenças culturais interferem na compreensão das orientações prestadas e recebidas. Conclusão: o imigrante africano percebe o atendimento que recebe nos serviços de saúde de Portugal como de boa qualidade, ainda que o acesso e a acessibilidade apresente dificuldades decorrentes principalmente das barreiras do preconceito e do racismo.

Descritores: Sistema de Saúde. Acesso aos Serviços de Saúde. Imigração. Países Receptores de Imigrantes. Grupo com Ancestrais do Continente Africano.
Assessment of the Relationship between Entrepreneurial Skills and Intentions – The Case of Vietnam
Authors: Nguyen Lam , Nguyen Thi Hong Lam
Published: October 2020

At present, the nation start-up is considered as a national policy to innovate, exploit the intellectual, technological and new business models ... thereby creating more enterprise efficiency in many key industries, promoting the overall development of the economy. To become an entrepreneur, need to understand the start-up, the start-up process and most importantly, the skills you need to get started. Therefore, this article aims are to provide an overview of the start-up process and the relationship between different business skills, as well as how they relate to the students’ intentions. A questionnaire survey was conducted among 92 students who had to study/graduated in Business Administration. The survey asked participants to rate themselves based on their creativity, ambiguity, marshaling, finance and self-efficacy skills. The results can help universities develop curricula that combine teaching skills to equip both the knowledge and skills needed for students or those who want to be successfully entrepreneurs.
Reflective Thinking Process Students with Visual Learning Style in Mathematical Problem Solving
Authors: Nurul Zahara  , Hajidin  , Abidin Zainal
Published: October 2020

The student's thought process is very dependent on each student's learning style. One model of learning styles is visual learning styles. Students who have a visual learning style tend to more easily absorb information and learn by what they see. Most students do not recognize the type of learning style, so students are not able to optimize the process of absorbing mathematical information properly and result in a lack of mathematical reflective thinking abilities. Reflective thinking is a thought process that is needed in mathematical problem solving. The teacher must know the students' mathematical reflective thinking process, so that it can help students in solving mathematical problems. The purpose of this study was to determine the reflective thinking process of students who have a visual learning style in solving mathematical problems. This research method is descriptive with a qualitative approach. The subjects in this study were 1 student of Meureudue 1 Junior High School who was selected based on a learning style questionnaire. Data collection is done through reflective thinking tests and interviews. The data obtained were analyzed using data reduction, data presentation and drawing conclusions. The results showed that the reflective thinking process of students who had a visual learning style on the Reacting indicator students began by mentioning what was known and asked, then on the Comparing indicator students identified the methods / concepts that were considered effective and connected the problems that were asked with the problems they had faced and the indicators. Contemplating students solve problems in questions and make conclusions but visual students are less clear in making conclusions and kinesthetic students still have incorrect calculations.
Stress and cancer
Authors: Jośko - Ochojska Jadwiga , Brus Ryszard
Published: October 2020

Badania naukowe dowiodły, że w czasie stresu wydzielanie hormonów, neuroprzekaźników w mózgu itp. jest zdecydowanie silniejsze i trwa dłużej, zwłaszcza jeśli człowiek jest przekonany, że nie będzie w stanie sprostać wymaganiom sytuacji stresowej, czyli pozostaje w stanie stresu niekontrolowanego. Głównym wskaźnikiem tego stanu jest długo trwający przyrost stężenia hormonów stresu we krwi. Im większe stężenie katecholamin, tym więcej uszkodzeń DNA, więcej komórek ulegających transformacji nowotworowej, większy guz i bardziej zaawansowana choroba. Katecholaminy ponadto zwężają naczynia krwionośne, co przyczynia się do wzrostu ekspresji czynnika VEGF, który zwiększa angiogenezę, wzrost guza i przerzuty nowotworowe. Kortyzol przyczynia się do hamowania układu immunologicznego i zmian w ośrodkowym układzie nerwowym. W stresie niekontrolowanym skróceniu ulegają telomery, które są kolejną przyczyną skrócenia długości życia. Dowiedziono także, że stres i trauma są dziedziczone w kolejnych pokoleniach w mechanizmie dziedziczenia epigenetycznego. Pojawiają się wtedy predyspozycje epigenetyczne do zachorowania na różne nowotwory złośliwe, w tym raka jajnika, żołądka, jelita grubego. W konkretnej sytuacji można jednak przejść ze stresu niekontrolowanego do kontrolowanego, mimo że sama sytuacja się nie zmienia, i to jest wiadomość przełomowa. W trakcie choroby nowotworowej wejście w stan stresu kontrolowanego zdecydowanie wspomaga terapię, zwiększając szansę na przeżycie lub nawet wyzdrowienie. Najczęściej warunkiem przejęcia kontroli nad stresem jest zmiana dotychczasowego stylu życia. Radzenie sobie ze stresem, aktywność ruchowa i zdrowe odżywianie się są w stanie nawet doprowadzić do zmian na poziomie epigenomu, a badania naukowe dowodzą, że możemy wtedy uporać się z licznymi odziedziczonymi predyspozycjami, zmniejszając prawdopodobieństwo zachorowania na nowotwory złośliwe.
New method for postmortem determination of alcohol intake
Authors: Nedugov German V. , Nedugov Vladimir G.
Published: October 2020

Background.One of the tasks of the forensic medical examination of acute alcohol intoxication on a corpse is to determine the amount of alcohol taken shortly before death. The disadvantage of existing methods for solving this problem is the need to remove fluid by spinal puncture of the corpse and determine the concentration of ethanol in it. This article shows for the first time the possibility of automated post-mortem determination of the amount of alcohol consumed without knowledge of the parameter ethanol concentration in the spinal fluid.Aim.To develop a mathematical model for postmortem determination of ethanol intake, based on objective parameters of ethanol kinetics and not containing the parameter of ethanol concentration in the spinal fluid, to implement the developed model in the format of a computer program.Material and methods.Regression and simulation mathematical modeling of single-dose ethanol kinetics. Writing the text of a computer program in C#.Results.A set of mathematical models has been developed to enable objective post-mortem determination of the amount of ethanol intake without the need for sampling and chemical-toxicological analysis of the spinal fluid. The set of computational procedures is implemented in the format of the computer program Alcohol calculator Z 4.0.Conclusions.The developed method of postmortem determination of ethanol intake and the program Alcohol calculator Z 4.0 created on its basis are recommended for use in the forensic examination of acute alcohol intoxication on a corpse.
Finite elemental analysis of local osteoporosis formation in the surgical treatment of fubilar fractures
Authors: Krupin Konstantin N. , Kislov Maxim A.
Published: October 2020

Background.When providing surgical medical care to patients with fibular fractures, one of the most common types of treatment is fixing the fracture area with a metal plate with screws during metallosteosynthesis surgery. During treatment, bone tissue is often thinned in the area of the fracture, which significantly increases the duration of treatment.Aim.Establishment of the mechanism of formation of osteoporosis in the fracture area after the operation of osteosynthesis of the fibula.Material and methods.The finite element method is used to simulate the destruction process using ANSYS.Results.A comparative study of the location of formation of focal osteoporosis formed in the fracture area of the distal part of the fibula diaphysis, under a metal plate installed during osteosynthesis, and the area of formation of maximum equivalent loads in the experimental mathematical model of the stress-strain state revealed complete similarity of the location.Conclusions.The formation of a zone of local osteoporosis in the area of a fibular fracture after osteosynthesis surgery is explained by a combination of factors, which are the presence of a fibular fracture fixed with metal screws with a metal plate, the support of the foot on the foot with pressure on the fibula. The zone of local osteoporosis in the area of the fibula fracture after osteosynthesis surgery occurs from the compression of compact plates of the fracture edges with limited mobility under the metal fixing plate.
A case of fatal hypertensive crisis in response to stress
Authors: Frolov Vasiliy V. , Frolova Irina A.
Published: October 2020

The article reviews the organismal response to psycho-affective situations in the form of neuroses, hormonal dysfunctions and pathologies of the vascular, alimentary and other systems extending to fatal outcomes.
LÍRAI OBJEKTIVITÁS ÉS IMPERSZONALIZMUS – EGY PARADOXON GENEALÓGIÁJA
Authors: ANGYALOSI Gergely
Published: October 2020

Közel fél évszázada jelent meg Bori Imre könyve, Az avantgarde apostolai. A szerző ebben a könyvben szokatlan módon az avantgárd egyik hazai ősét véli felfedezni Füst Milánban, ezért tárgyalja egy kötetben Kassák Lajossal. A magyarországi irodalomtörténet-írás többnyire elutasította ezt a koncepciót, főleg annak az előfeltevésnek az alapján, hogy az avantgárdnak nevezett irodalmi mozgalmakat általában kollektivista ideológiák határozták meg. Ha azonban elfogadjuk a Bori által javasolt kiindulópontot, miszerint Füst lírája egyszerre jelenti a szimbolista-preraffaelita verseszmény, valamint a klasszikus értelemben vett individuum felbomlását, találhatunk kapcsolódási pontokat az avantgárd törekvésekhez. Bori másik érdeme a lírai imperszonalitás, vagy Füst kortársainak kifejezését használva, az „objektív líraiság” fogalmának újraértelmezése volt. A tanulmány azt vizsgálja, hogy mennyire működőképes Bori Imre koncepciója – mai kontextusba helyezve.
Efek Hari Libur Lebaran Pada Emiten Yang Terdaftar Dalam ISSI Periode 2011-2013
Authors: Utomo Venny Julia , Herlambang Leo
Published: October 2020

This research aims to analyze the market reactions of Eid Mubarak Holiday which is indicated by the presence of average abnormal return and average abnormal trading volume activity on issuers in ISSI list within 2011-2013 period, and especially for the issuers which engaged in the field of food and drinking product industries, also retail industries as well.The method used in this research is event study which will analyze the alteration of price movements and volume of stock trading before and after Eid Mubarak Holiday. The hypothesis of this research is the presence of trading reaction that indicated by average normal return and the difference of average abnormal trading volume activity before and after Eid Mubarak Holiday. This research testing uses one sample-test to seek if there are any average normal returns around Eid Mubarak Holiday, while paired sample-test is used to test the difference of average normal trading volume activity before and after Eid Mubarak Holiday. The writer did the research within 41 days, divided into two periods. 30 days before Eid Mubarak Holiday and 10 days after Eid Mubarak Holiday. The amount of sample in this research is 31 issuers which have met the sampling criteria using purposive sampling.The result of the first hypothesis indicates that there is insignificant average abnormal return, while the second hypothesis indicates the difference of significant average abnormal trading volume activity.
COVID-19 E POVOS INDÍGENAS: Aspectos de seguridade social
Authors: Sousa Fernando da Cruz , Moraes Nelson Russo de , Quiqueto Ana Maria , Teodoro Vitor Bini
Published: October 2020

As condições de vulnerabilidade socioeconômica e biológica dos povos indígenas frente à pandemia de coronavírus impõem a questão sobre quais são as limitações do amparo promovido pelas políticas de seguridade social. A fim de responder a esse questionamento, esta pesquisa buscou conceituar os direitos sociais na imbricação com a diferenciação cultural indígena, assim como buscou revisar a mais recente trajetória das políticas de saúde, assistência social e previdência social para esse público. Para tanto, foi realizada uma revisão bibliográfica e documental sobre os termos envolventes ao objetivo. Com isso, verificou-se que, até então, somente a política de saúde apresenta uma alternativa de diferenciação institucionalizada, enquanto as políticas de assistência social e de previdência social, embora possam ter boa cobertura dos usuários indígenas em alguns aspectos, se apresentam distantes das demandas desses povos. Diante dessa situação, a qual se somam os retrocessos imprimidos pelo avanço neoliberal sobre as políticas sociais como um todo, e com as investidas específicas sobre os direitos indígenas, estes se encontram numa situação de maior fragilidade, pois, além de não fruírem de políticas sociais culturalmente sensíveis, vivenciam um atraso na resposta emergencial em forma de política pública contra os impactos da covid-19, o que pode levar ao maior número de contaminações e de mortes entre os povos indígenas.
Morphological Integration in Human Skull and Its Possible Role in Etiogenesis of Neuropsychiatric Disorders: Deciphering the Link between Evolution, Development and Disease
Authors: Kumar Ashutosh , Pandey Sada N. , Faiq Muneeb A. , Pareek Vikas , Narayan Ravi K.
Published: October 2020

Structure - function interdependence is a universal phenomenon in biological systems. Any alteration in structural features may result in change in functions–leading to natural selection of a particular trait, or dysfunctions thereof. Many such alterations arise during the course of evolution of a species and may meticulously be traced during embryonic development of an organism. Through the theoretical construct of morphological integration, a set of phenotypic traits alter in a coordinated and integrated manner during evolution and embryonic development of an organism yielding efficient environmentally adapted physiological functions pertinent to those structures. Such integration may go awry sometimes, setting the basis for genesis of diseases. Morphological integration in human skull has been established through various methods. The brain-skull co-development is handcuffed through evolution and development, and the very basis of a neuro-psychiatric disorder could be underlying in dysmorphogenesis of the skull, its consequent effect on structures, and thus functions of the pertinent brain components. Here we propose that morphological integration in human skull may be mechanistically implied in etiogenesis of certain neuro-psychiatric disorders and should be borne in mind during clinical diagnosis and therapeutic interventions.
O O lugar da formação e mediação nas literacias e competências midiáticas de crianças e jovens estudantes
Authors: Fantin Monica
Published: October 2020

O texto discute o lugar que a formação e as mediações entre pares, escolares e familiares ocupam nas aprendizagens “digitais” e nas competências midiáticas de crianças e jovens estudantes, a partir de uma pesquisa interinstitucional desenvolvida em 6 universidades brasileiras, no contexto de uma rede internacional de pesquisadores que investiga a temática das competências midiáticas para a cidadania. A pesquisa mais ampla, de abordagem quali-quantitativa, envolveu diferentes dimensões das competências midiáticas entre crianças, jovens, estudantes universitários, professores e comunicadores, e o recorte do artigo enfatiza o papel da formação na construção das competências midiáticas de estudantes de 9 a 12 anos e 14 e 16 anos em diferentes contextos socioculturais. O texto situa alguns fundamentos sobre formação, aprendizagem, mediação e competências midiáticas bem como os aspectos metodológicos da pesquisa. Na discussão sobre a formação recebida ou não pelos estudantes, o artigo destaca o lugar da aprendizagem autodidata, da aprendizagem com amigos, da mediação escolar e familiar e da formação em workshops. Por fim, situa alguns desafios da formação entendida como mediação educativa na promoção de experiências midiáticas e culturais responsáveis do ponto de vista semiótico, expressivo/estético e ético na escola e fora dela.
Public awareness and knowledge of factors associated with dementia in China
Authors: Zheng Yong-bo , Shi Le , Gong Yi-Miao , Wang Xiao-Xiao , Lu Qing-Dong , Que Jian-Yu , Khan Muhammad Zahid , Bao Yan-Ping , Lu Lin
Published: October 2020

Background: Dementia is a global public health priority. Many modifiable factors have been shown to influence the development of dementia, but these factors are not adequately known by the general public. This study aimed to assess public awareness of the factors that are associated with dementia in China. Methods: A cross-sectional study was conducted from May to October 2019 using an Internet-based questionnaire. Data on basic sociodemographic characteristics were collected, and the knowledge of risk and protective factors for dementia was investigated. Logistic regression analysis was performed to compare levels of the knowledge of factors associated with dementia across populations with different demographic characteristics. Results: Data from 3,338 respondents were analyzed. The percentages of participants who accurately identified the risk factors of dementia were follows: 84.24% for negative affect, 65.07% for alcohol use, 56.68% for smoking, 48.74% for hypertension, and 42.66% for diabetes. The percentages of participants who accurately identified the protective factors for dementia were follows: 90.00% for exercise, 84.69% for social activity, 80.92% for intelligence games, 74.45% for reading, and 6.14% for antihypertensive or hypolipidemic drugs. The majority of Chinese people correctly recognized the role of lifestyle factors in the development of dementia but not medical factors. The levels of knowledge of the factors associated with dementia were significantly distinct across populations with different characteristics. The following sociodemographic characteristics were associated with more comprehensive knowledge of dementia risk and protective factors: women, young age, high education levels, nonmanual jobs, and contact with patients with dementia.Conclusions: Public awareness and knowledge of risk and protective factors for dementia in China are still insufficient. More efforts are needed to publicize information to reduce the risk of dementia.
Being Pro-Active in Meeting the Needs of Suicide-Bereaved Survivors: results from a systematic audit in Montréal
Authors: LIGIER Fabienne , Rassy Jessica , Fortin Gabrielle , Haaster Ian van , Doyon Claude , Brouillard Charlie , Séguin Monique , Lesage Alain
Published: October 2020

Background: Suicide is a major public health concern. In 2017, the suicide rate in Canada was 11 per 100 000 inhabitants. According to literature, 1 in 5 people have experienced a death by suicide during their lifetime. The aim of this study was to describe the met and unmet needs of suicide-bereaved survivors and to provide postvention recommendations. Methods: Further to an exploratory mixed-method audit of 39 suicides that occurred in Montreal (Canada) in 2016, suicide-bereaved survivors (n = 29) participated in semi-structured interviews and completed instruments to discuss and assess potential pathological grief, depression (PHQ-9), and anxiety (GAD-7), as well as health and social services utilization. A panel then reviewed each case and provided recommendations. The mean age of participants was 57.7 years and 23 were women.Results: Although help was offered initially, in most cases by a health professional or service provider (16/29), 22 survivors would have liked to be contacted by telephone in the first two months post suicide. Four categories of individual unmet needs (medical/pharmacological, information, support, and outreach) and one collective unmet need (suicide pre/postvention training and delivery) emerged. Conclusions: Although Quebec provincial services have been developed and offered to suicide-bereaved survivors in the past decade, many dwindled over time and none has been applied systematically. Recommendations for different stakeholders (Ministry of Health and Social Services, coroners, NGOs, and representatives of suicide-bereaved survivors) outlined in this study could be an interesting first step to help develop a suicide pre/postvention strategy.