bluuebunny/crossref_metadata_2025 huggingface dataset:
Formação profissional do técnico de enfermagem em segurança do paciente: estudo misto
Authors: Rocha Ruth Cardoso , Avelino Fernanda Valéria Silva Dantas , Borges José Wicto Pereira , Araújo Agostinho Antônio Cruz , Bezerra Maria Augusta Rocha , Nunes Benevina Maria Vilar Teixeira
Published: February 2023

Resumo Objetivo: analisar a formação de técnicos de enfermagem em segurança do paciente. Método: estudo de método misto paralelo convergente, em que elementos qualitativos e quantitativos foram concomitantemente implementados e igualmente priorizados, realizado em três colégios técnicos vinculados a uma instituição pública federal do Nordeste brasileiro. No qualitativo, realizou-se entrevista semiestruturada com 24 docentes e aplicou-se a análise temática. No estudo quantitativo, survey, utilizou-se instrumento para rastrear termos sobre segurança do paciente com 84 discentes. A interpretação geral dos dados realizou a combinação dos resultados e balizou-se no Guia Curricular de Segurança do Paciente. Resultados: emergiram duas categorias temáticas: Compreensão dos docentes acerca do tema segurança do paciente na formação de técnicos de enfermagem e Aplicação e projeção do ensino da segurança do paciente na formação de técnicos de enfermagem. No estudo quantitativo, dos 46 termos rastreadores, predominou a identificação de termos no contexto teórico-prático, nos Cursos A e C, totalizando 36 (78,3%) e 25 (54,3%), respectivamente. No Curso B, destacou-se ensino teórico, com 26 termos (56,5%). Conclusão: a formação profissional do discente técnico de enfermagem apresenta foco tecnicista e não contempla, integralmente, no processo ensino-aprendizagem, questões de segurança do paciente e, assim, configura-se desafio para as instituições formadoras e docentes.
Perfil y características de la violencia contra los adultos mayores durante la pandemia de COVID-19
Authors: Ranzani Camila de Morais , Silva Sara Cirillo , Hino Paula , Taminato Mônica , Okuno Meiry Fernanda Pinto , Fernandes Hugo
Published: February 2023

Resumen Objetivo: identificar el perfil sociodemográfico y las características de la violencia interpersonal contra los adultos mayores en el primer año de la pandemia de COVID-19 en una ciudad capital de la región sureste de Brasil. Método: investigación descriptiva, exploratoria con diseño transversal a partir del análisis de las notificaciones de casos sospechosos o confirmados de violencia contra el adulto mayor, ocurridos entre marzo de 2020 y marzo de 2021. Se realizó un análisis estadístico univariado y la prueba exacta de Fisher (p< 0,05). Resultados: hubo 2681 notificaciones en el período. Las principales víctimas fueron personas entre 60 y 64 años, de sexo femenino, blancas y con baja escolaridad. La mayoría de los casos se registró en el hogar. La violencia física y psicológica fueron las más comunes, con uso de fuerza física/golpes y amenaza, respectivamente. El agresor era generalmente del sexo masculino, más joven que la víctima, hijo o pareja. Las agresiones se produjeron más de una vez y fueron motivadas por conflictos generacionales. Hubo baja derivación a organismos de protección de adultos mayores. Conclusión: el perfil sociodemográfico obtenido revela que son víctimas vulnerables, sujetas a múltiples formas de violencia y que la integridad de su salud está en riesgo potencial.
Ixodicidal effect of extracts from Cordia boissieri, Artemisia ludoviciana and Litchi chinensis on Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)
Authors: García-Ponce R. , Hernández-Escareño J. J. , Cruz-Valdez J. C. , Galindo-Rodríguez S. A. , Heya M. S. , Villarreal-Villarreal J. P.
Published: February 2023

Abstract The ixodicidal activity of the methanolic extracts of Artemisia ludoviciana (Astereceae), Cordia boissieri (Boraginaceae) and Litchi chinensis (Sapindaceae) against two field populations of Rhipicephalus (Boophilus) microplus from the state of Nuevo Leon (NL) and Veracruz (VER) was evaluated. The extract of L. chinensis in the concentration of 150 mg/ml showed efficacies of 100% and 99% against engorged females and mortalities of 98% and 99% against larvae. C. boissieri in the same concentration showed efficacies of 71% and 37% against engorged adults and mortalities of 33.04% and 10.33% against larvae and A. ludoviciana had efficacies of 94% and 83% in adults and mortalities of 89.39% and 89.21% against larvae in both populations respectively. The enzymatic activity of Acetylcholinesterase (AChE), Carboxylesterase (CaE), Glutathione-S-Transferase (GST) and Alkaline Phosphatase (ALP) was measured in both populations of ticks. As a result, a significant difference between both populations was shown, being the VER population the one that exhibited a higher enzymatic activity (p ≤ 0.05). It can be concluded that the methanolic extract of the seed of L. chinensis shows potential ixodicidal activity and can be used as an alternative source of tick control, however, prior characterization, toxicity and formulation studies are necessary.
Prevalence of Gram positive bacteria in the affected individuals of Otitis media with effusion from the indigenous population of Southern Punjab, Pakistan: first report
Authors: Shah M. Z. , Mustafa G. , Iqbal M. , Qasim M. , Abbas K. , Umair M. , Baig H. M. A.
Published: February 2023

Abstract Otitis media with effusion (OME) is a type of otitis media (OM) characterized by the presence of fluid behind intact tympanic membrane and is one of the most common diseases of early childhood. It is an infectious disease associated with the presence of many pathogenic bacteria in the middle ear of affected individuals. This study was aimed to determine the prevalence of Gram-positive bacteria from the middle ear of OME patients in the population of Southern Punjab, Pakistan. The incidence of OME under comprehensive healthcare setting was investigated in patients who consulted at the department of ear, throat and nose, Bahawal Victoria Hospital (BVH), Bahawalpur, from December, 2019 to May, 2021. Ear swabs were taken from affected and normal individuals. After culturing bacteria from the ear swabs, microscopic analysis and biochemical tests were performed to characterize the cultured Gram-positive bacteria. Out of 352 patients examined, 109 (30.9%) patients had OME. Age of the participants ranged from 14 to 50 years; individuals between the ages of 14 and 22 years had the highest infection rates, while individuals between 40 and 50 years had the lowest rate of infection. Tympanic membrane perforation, fever, cough, sore throat, ear pain and hearing problem showed association with symptoms of OME. Microscopic analysis and biochemical characterization showed the presence of streptococci and staphylococci in all the studied samples. The most frequently isolated bacteria were Streptococcus pneumoniae, Streptococcus pyogenes, and Staphylococcus aureus with percentage of 53.3%, 20% and 13.3% respectively. Enterococcus faecalis (6.6%) and Staphylococcus epidermidis (6.6%) were also identified in the studied samples. This study will help in the better medical administration of OME affected individuals.
Length-weight relationships of farmed major carps (Cattla cattla, Labeo rohita and Cirhinus mrigala) fed with different sources of protein in an intensive polyculture
Authors: Karim A. , Khwaja S. , Shoaib M. , Yawar N. A. , Aziz Z. , Hafeeza B.
Published: February 2023

Abstract The present findings provide information regarding the length-weight relationships (LWRs) of Indian major carps viz Cattla cattla, Labeo rohita and Cirhinus mrigala in an intensive polyculture system. Much work has been done in Pakistan with respect to fish LWRs, much of such work has been ignored. Carps were fed with twelve different formulated diets containing four different sources of protein i.e. fish meal (FM), all parts chicken meal (APCM), corn gluten (CGM) and soybean meal (SBM). Each type of protein is used at inclusion level of 25, 35 and 45% into the formulated diets to evaluate the minimum requirement of that ingredient for optimal growth of in-hand species. The values of slope “b” ranged from 2.20 to 4.90 for these species of carps which showed a strong healthy relationship among variables (level of protein and months).
Relação entre liderança coaching e resiliência dos enfermeiros no ambiente hospitalar
Authors: Menezes Heloísa de Góes Gigueira , Bernardes Andrea , Amestoy Simone Coelho , Cunha Isabel Cristina Kowal Olm , Cardoso Maria Lúcia Alves Pereira , Balsanelli Alexandre Pazetto
Published: February 2023

RESUMO Objetivo: Analisar a relação entre liderança coaching e resiliência dos enfermeiros no ambiente hospitalar. Método: Estudo transversal, realizado com enfermeiros, auxiliares e técnicos de enfermagem. Os enfermeiros responderam ao Questionário de Autopercepção do Enfermeiro no Exercício da Liderança (QUAPEEL) e à Escala de Connor-Davidson para o Brasil-25 (CD-RISC-25BRASIL). Os técnicos/auxiliares de enfermagem responderam ao Questionário de Percepção do Técnico e Auxiliar de Enfermagem no Exercício da Liderança (QUEPTAEEL). Os Testes t de Student e Correlação de Pearson foram utilizados (p ≤ 0,05). Resultados: Verificou-se diferença estatisticamente significante entre autopercepção dos enfermeiros e heteropercepção dos técnicos/auxiliares de enfermagem no exercício da liderança coaching para pontuação total (p = 0,002) e nos seus domínios “Dar e receber feedback” (p < 0,001), “Dar poder e exercer influência” (p < 0,001) e “Apoiar a equipe para o alcance dos resultados” (p = 0,020). Houve correlação estatisticamente significante entre todos os domínios do Questionário de Autopercepção do Enfermeiro no Exercício da Liderança Coaching e Resiliência. Conclusão: A resiliência se relacionou positivamente com a autopercepção de liderança coaching dos enfermeiros.
Conscious Capitalism and Construction of Humanized Relationships: A Study in a Credit Cooperative from the Sensemaking Perspective
Authors: Furlanetto Célia Dorigan de Matos , Weymer Alex Sandro Quadros , Matos Raquel Dorigan
Published: February 2023

ABSTRACT Objective: this study aims to understand how the purpose of a credit union organization focused on humanizing financial relations can be institutionalized from the stakeholder’s interpretation and action. Theoretical Framework: this purpose was analyzed based on the concepts of an integrated perspective in terms of sensemaking, construction of humanized relations, conscious capitalism, and organizing, which allowed for a contextualized and non-linear reflection on the studied phenomenon, going beyond formal and tangible parameters of the manifested expectations of the cooperative’s strategic guidelines. Methods: the research strategy is a case study for presenting the uniqueness of a specific phenomenon, using content analysis as a technique from the data triangulation of semi-structured interviews, participant observation, and document analysis. Results: as a result, it was possible to conclude that the legitimacy of the cooperative’s strategic purpose goes through an interpretative process of individuals and their different roles that, when interacting among themselves, provide a basis for actions toward incorporating the purpose with a focus on humanized relations because it is a process of social construction and retrospective re-signification of strategic parameters that delineate behaviors. Conclusions: this study provides an expanded look at a specific phenomenon (humanized financial relations) in organizations guided by particular and universal principles (credit unions) that, while competing with non-cooperative financial institutions (banks), need to balance economic and social interests, without ceasing to be competitive.
Governo Aberto na Cidade de São Paulo: Uma Análise de Políticas Públicas Abertas
Authors: Oliveira Daniel José Silva , Ckagnazaroff Ivan Beck
Published: February 2023

RESUMO Objetivo: identificar quando e como os princípios de governo aberto, especificamente transparência, participação e colaboração, estão sendo incorporados nas fases do ciclo de políticas públicas em governos locais. Marco teórico: teorias relacionadas à análise de políticas públicas e governo aberto. Método: estudo de caso único com enfoque incorporado sobre a iniciativa de governo aberto da Prefeitura Municipal de São Paulo, em que foram analisadas três políticas públicas distintas a partir de um esquema teórico-analítico construído mediante a integração da abordagem do ciclo de políticas públicas com os três princípios de governo aberto. Resultados: o estudo evidenciou que em nenhuma das políticas analisadas houve a plena incorporação desses princípios nas cinco fases do ciclo político e que pouco se avançou quanto aos requisitos necessários para que elas possam ser consideradas políticas abertas. Conclusões: o estudo contribui para estreitar a lacuna teórico-metodológica em relação à efetividade de iniciativas de governo aberto. O método oferece condições de ser aplicado em diferentes realidades e pode ser utilizado em pesquisas futuras para melhor compreender como os princípios de governo aberto estão sendo incorporados nas políticas públicas de governos que firmaram compromissos de governo aberto.
Who Is Management Research For?
Authors: Vizeu Fabio , Lara Luiz Gustavo Alves de
Published: February 2023

ABSTRACT Objective: this paper was written as an essay in a proposition from Adorno, as well as a text influenced by critical and Philosophical hermeneutic. It presents a fundamental question that we have rehearsed: Who is Management research for? Provocations: we take as a basis the reflection on the discursive and social differences between the academic field and the world of meaning of management practitioners, to realize how contradictory our practices and institutionalized structures of communication become, as they do not meet the fundamental objective of science, that is, the transformation of the reality in which it focuses. Conclusions: the hermeticism of our area is not an unsolvable problem, it is enough to see that in other fields the applicability of scientific knowledge happens. Our community needs to wake up to this, before society realizes that, as it is, we are expendable.
A Quem Serve a Pesquisa em Administração?
Authors: Vizeu Fabio , Lara Luiz Gustavo Alves de
Published: February 2023

RESUMO Objetivo: este texto foi escrito como um ensaio tal qual proposto por Adorno e atravessado por premissas da hermenêutica crítica e filosófica. Nele, somos norteados por um incômodo fundamental: A quem serve a pesquisa em Administração? Provocações: tomamos como base a reflexão sobre as diferenças discursivas e sociais entre o campo acadêmico e o mundo de significação dos praticantes da Administração, para perceber o quanto contraditório se tornam nossas práticas e estruturas institucionalizadas de comunicação na medida em que elas não atendem ao objetivo fundamental da ciência, qual seja, a transformação da realidade na qual se debruça. Conclusões: o hermetismo de nossa área não é um problema sem solução, basta ver que em outros campos a aplicabilidade do conhecimento científico acontece. É preciso que a nossa comunidade acorde para isso, antes que a sociedade se dê conta de que, da forma como está, somos dispensáveis.
Há Tanta Vida Lá Fora! Work-life Conflict, Mulheres e Pós-Graduação em Contabilidade
Authors: Nganga Camilla Soueneta Nascimento , Nova Silvia Pereira de Castro Casa , Silva Sandra Maria Cerqueira da , Lima João Paulo Resende de
Published: February 2023

RESUMO Objetivo: o presente artigo busca problematizar as experiências na pós-graduação e o work-life conflict na vida de doutorandas em ciências contábeis no Brasil. Marco teórico: o presente trabalho se apoia em teorias feministas que discutem o papel social imposto à mulher por meio da divisão sexual do trabalho e como tal papel social se relaciona na busca do equilíbrio entre vida pessoal e profissional. Método: foi adotado o construcionismo, como vertente epistemológica, e o pós-estruturalismo feminista como perspectiva teórica. Para construção do corpus de pesquisa foram realizadas entrevistas em profundidade, analisadas pela técnica de template analysis, com a construção de códigos ordenados, de acordo com as características da pesquisa e a intenção das pesquisadoras. Resultados: devido ao fato de a estrutura acadêmica replicar a divisão sexual do trabalho encontrada na sociedade, foram encontradas dicotomias impostas como ‘abandono ou adiamento’ da vida pessoal em detrimento da vida acadêmica, principalmente por questões relacionadas à maternidade e às altas cobranças dos programas de pós-graduação. Conclusões: como resultado, conclui-se que as doutorandas desempenham diversos papéis sociais tradicionalmente atribuídos às mulheres. Para tanto, relegam a vida pessoal, tomando a decisão de postergar casamento e maternidade ou a entrada no doutorado. Assim, consideradas tanto as relações pessoais construídas com pares e professores quanto o ambiente institucional acadêmico, a academia ainda precisa avançar para contemplar a trajetória de mulheres, de forma que as difíceis escolhas não recaiam sobre elas. O presente trabalho contribui para a literatura ao lançar olhares e reflexões específicas da academia contábil do Brasil.
Like, Share, and React: Twitter Capture for Research and Corporate Decisions
Authors: Siedschlag Djeison , Lana Jeferson , Augusto Junior Roberto Gonçalves , Marcon Rosilene
Published: February 2023

ABSTRACT Context: social media have an immense amount of information, being a space for its dissemination. Individuals, online connections, are able to filter or give visibility to certain information, to the detriment of others. The central problem lies in monitoring posts and reactions aimed at corporate actions and strategies. In addition to this monitoring, companies can make decisions based on the data collected. Objective: to develop and structure a social media management tool. Methods: to achieve the general objective, the article was developed in three main steps. The first was to suggest a free software script for capturing and initial analysis of Twitter posts. The second step was to categorize this analysis and identify resources and competencies needed by companies. Finally, actions to be taken by companies for social media management were suggested. Results: the developed script enabled the automated extraction of data, which were stored in a database for analysis and management of online interactions. The actions were proposed based on the case study developed. Conclusions: in the practical field, this study contributes to the process of extracting data from Twitter by proposing a new script for capturing data, identifying the main categories of influence of digital activists and monitoring social media through strategic actions. By demonstrating that the script is effective in extracting data, it is possible to carry out further studies and implement the social media management monitoring process.
Infestation of rabbits with just-molted adults of the cattle tick Rhipicephalus microplus: biological parameters and efficiency
Authors: Vargas-Hernandez Milagros , Montero-Espinosa Carlos , Sánchez-Villaurrutia Dunia , Duarte Carlos Antonio , Bechara Gervasio Henrique , Fuentes-Castillo Alier , Ancisar Julio , Suárez-Alba José , Mosqueda-Lobaina Omar , Suárez-Pedroso Marisela
Published: February 2023

Abstract In this study, we report for the first time the successful infestation of rabbits with just-molted, unfed adults of Rhipicephalus microplus. Six New Zealand White rabbits were experimentally infested with 20 female and 20 male unfed adult ticks released into plastic chambers fixed on the shaved backs of each host. The attachment and feeding processes were successful. The biological characteristics of the ticks and the occurrence of adverse events in the tick-attachment area were studied. The average engorgement period was 10.7 days, and 33.3% of the engorged females completed the parasitic phase. The average weight of the recovered engorged females was 149.8 mg, with an average egg mass weight of 70.9 mg, a conversion efficiency index of 47.3%, and a hatching percentage of 88.31%. The adverse reactions found in the tick-attachment area were the usual inflammatory responses of the organism to infestation by these ectoparasites; however, it did not prevent the ticks from feeding and completing their life cycle. These data indicate that the infestation of rabbits with just-molted, unfed adult ticks could be a valuable, alternative animal model for rapid and economical evaluation of vaccine candidates and new molecules with acaricidal activity against Rhipicephalus microplus.
Epidemiological aspects of cattle tick fever in Brazil
Authors: Puentes Juan Dario , Riet-Correa Franklin
Published: February 2023

Abstract The present work reviews the epidemiologic situation of Anaplasma marginale and Babesia spp. infections and the occurrence of cattle tick fever outbreaks in Brazil. In areas of tick fever enzootic instability, environmental conditions interfere with the development of Rhipicephalus (Boophilus) microplus: chilly winter in the southern region, floods in the Pantanal, and low humidity in the Caatinga. In contrast, the climatic conditions of stable zones (Cerrado, Amazon and Atlantic Forest biomes) favor tick development. In enzootic areas, tick fever is uncommon because the animals are in frequent contact with the parasite, acquiring immunity naturally during the period of innate resistance; however, outbreaks may occur when calves become infested by considerable numbers of infected ticks during this period or in adults raised in tick-free environments that become infested for the first time when transporting to stable areas. It is necessary to better understand the disease’s risk factors under stable conditions and the implications of the mechanical and other vector transmission of A. marginale. To prevent tick fever outbreaks in Brazil, it is important to develop and use anaplasmosis and babesiosis vaccines in cattle from enzootic unstable regions, especially when animals are moved to stable areas.
PROJETOS POLÍTICO PEDAGÓGICOS DA EDUCAÇÃO PATRIMONIAL:
Authors: Gonçalves Ana , De Mari Cezar Luiz
Published: February 2023

Este artigo é um produto da pesquisa realizada para o mestrado em Educação, cujo objeto é o projeto político pedagógico apresentado pela UNESCO para educação patrimonial, por meio das iniciativas por ela encorajadas para preservação do patrimônio cultural e natural. A partir de uma pesquisa qualitativa de análise documental das recomendações, declarações e convenções da UNESCO, foi possível reconstruir as propostas e usos políticos da educação patrimonial e projetos político pedagógicos planejados por esta agência. O resultado apresentado é um panorama da política pedagógica idealizada  para a preservação patrimonial e sua exploração econômica, seja como suporte para criação de redes sustentáveis para comunidades tradicionais, exploração responsável pelo turismo cultural por agentes públicos e privados e responsabilidade científica e pedagógica na preservação de bens culturais materiais e imateriais. A contribuição deste artigo é, ao final, uma reflexão sobre a importância do estabelecimento de critérios para avaliar os impactos destes projetos políticos pedagógicos para o público por ele visado.
AN ADAPTIVE STRATEGY FOR SEQUENTIAL DESIGNS OF MULTILEVEL COMPUTER EXPERIMENTS
Authors: Ehara Ayao , Guillas Serge
Published: February 2023

Investigating uncertainties in computer simulations can be prohibitive in terms of computational costs, since the simulator needs to be run over a large number of input values. Building an emulator, i.e., a statistical surrogate model of the simulator constructed using a design of experiments made of a comparatively small number of evaluations of the forward solver, greatly alleviates the computational burden to carry out such investigations. Nevertheless, this can still be above the computational budget for many studies. Two major approaches have been used to reduce the budget needed to build the emulator: efficient design of experiments, such as sequential designs, and combining training data of different degrees of sophistication in a so-called multifidelity method, or multilevel in case these fidelities are ordered typically for increasing resolutions. We present here a novel method that combines both approaches, the multilevel adaptive sequential design of computer experiments in the framework of Gaussian process (GP) emulators. We make use of reproducing kernel Hilbert spaces as a tool for our GP approximations of the differences between two consecutive levels. This dual strategy allows us to allocate efficiently limited computational resources over simulations of different levels of fidelity and build the GP emulator. The allocation of computational resources is shown to be the solution of a simple optimization problem in a special case where we theoretically prove the validity of our approach. Our proposed method is compared to other existing models of multifidelity Gaussian process emulation. Gains in orders of magnitudes in accuracy or computing budgets are demonstrated in some numerical examples for some settings.
On the resilience of obligatory control in inflected infinitives under object control verbs
Authors: Santos Ana Lúcia
Published: February 2023

This study investigates the interpretation of inflected infinitives under object control verbs in European Portuguese. It contrasts the behaviour of two different types of control verbs, represented by obrigar ‘force’ and convencer ‘convince’, and belonging each to one of the two classes of control verbs established by Landau (2015). It is argued that inflected infinitives under different object control verbs show a different behaviour: whereas inflected infinitives under convencer ‘convince’ do not maintain obligatory control readings (as previously shown by Barbosa, 2021), under obrigar ‘force’ and similar verbs an obligatory control reading is maintained. This empirical observation is in agreement with the predictions of Landau (2015), to the extent that, in the set of verbs that Landau associates to predicative control, agreement inflection does not block control, even though some further questions are raised to Landau’s analysis. In the present study, a correlation is established between different types of object control verbs, their semantics, and the availability of non-controlled inflected infinitives.
Razão de dependência: uma análise espacial para os municípios brasileiros
Authors: Bastos Suzana Quinet Andrade , Gomes Bruno Silva Moraes , Pereira Marcilio Zanelli , Tosta Tamires Vieira
Published: February 2023

O trabalho analisa o fenômeno da transição demográfica com a finalidade de verificar a existência e evolução de clusters nos municípios brasileiros bem como capturar os indicadores sociais e econômicos que influenciam esse fenômeno. Adota-se como indicador da transição demográfica a razão de dependência, que mede a participação relativa da população inativa, que deveria ser sustentado pela parcela da população em idade ativa. Para esse fim, usa-se o método de Análise Exploratória de Dados Espaciais (AEDE) e a estimação dos modelos econométricos espaciais com dados dos Censos Demográficos de 1991, 2000 e 2010. Os resultados destacam que há heterogeneidade da transição demográfica nos municípios brasileiros, sendo que os municípios do Sul e Sudeste do país apresentam-se em um estágio mais avançado. Na regressão espacial, as variáveis: esperança de vida ao nascer, taxa de mortalidade infantil, coeficiente de Gini e água e esgoto inadequados mostram relação positiva com a razão de dependência. Já renda per capita média, expectativa de anos de estudo e IDHM indicam relação inversa.
Application of Monte Carlo methods for solving the regular and degenerate problem of two-phase filtration
Authors:   Kostanay Regional University named after A. Baitursynov, Tastanov Meyrambek G. , Utemissova Anar A. ,   Kostanay Regional University named after A. Baitursynov, Mayer Fedor F. ,   Kostanay Regional University named after A. Baitursynov
Published: February 2023

One of popular mathematical models of filtration is the classical elastic regime model describing the nonstationary equilibrium filtration. It is also called the Muskat-Leverett model. Solving filtration problems by Monte Carlo methods makes it possible to find the solution of the problem at an individual point of the domain and to estimate derivatives of the solution. This paper is devoted to applying algorithms of the Monte Carlo method to problems of filtration. The Monte Carlo algorithms of random walk by spheres and on boundaries are used for solving the stationary problem of filtration of two immiscible inhomogeneous incompressible fluids in a porous medium and for estimating the solution and the derivatives of the solution of this problem.
On linearization of hyperbolic equations with integral load in the main part using an a priori estimate of their solutions
Authors:   Kabardino-Balkarian State University, Boziev Oleg L. ,   Kabardino-Balkarian Science Center of the Russian Academy of Sciences
Published: February 2023

A priori estimates are established for solutions of one-dimensional inhomogeneous hyperbolic equations with an integral load in the main part, which has the form a(s) = sp, for p = 1, 0.5 and -1, with inhomogeneous initial and homogeneous boundary conditions. Here s is the integral over the space variable of the square of the modulus of the derivative of the solution of the equation with respect to x. Examples of linearization of loaded equations by substituting the right-hand sides of the estimates for a(s) are given.
Finite groups with permuted strongly generalized maximal subgroups
Authors:   Russian Presidential Academy of National Economy and Public Administration, Gorbatova Yulia V.
Published: February 2023

The structure of finite groups in which any strictly 2-maximal subgroup permutes with an arbitrary strictly 3-maximal subgroup is described. It is shown that the class of groups with this property coincides with the class of groups in which any 2-maximal subgroup permutes with an arbitrary 3-maximal subgroup, and, as a consequence, such groups are solvable. As auxiliary results, we describe the structure of groups in which any strictly 2-maximal subgroup permutes with an arbitrary maximal subgroup. In particular, it is shown that the class of such groups coincides with the class of groups in which any 2-maximal subgroup commutes with all maximal subgroups, and, as a consequence, such groups are supersoluble.
Simulation of the interaction of conical impactors having an angle of attack with underwater barriers
Authors:   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Batuev Stanislav P. , D’yachkovskiy Aleksey S. ,   Tomsk State University, Radchenko Pavel A. ,   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Radchenko Andrey V. ,   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Sammel’ Anton Yu. ,   Tomsk State University, Chupashev Andrey V. ,   Tomsk State University
Published: February 2023

In this paper, the effect of the angle of impact and the angle of attack on the interaction between truncated coneshaped impactors made of BHZh-95 alloy and underwater barriers made of aluminum alloy is studied using experimental and computational methods. When such an impactor enters water, a supercavern appears around the impactor and minimizes the fluid friction. During the motion, the impactor afterbody periodically experiences impermanent contact with the walls of the supercavern, which maintains the steady motion. Note that the center of mass of the impactor is located closer to its afterbody, which can induce the angle of attack appearance during the motion. The experimental study is conducted using a hydroballistic track with high-speed video recording. The speed range of 250-350 m/s is considered. Mathematical modeling is carried out using the EFES original software package. It is revealed that a positive angle of attack β ≤ 10° leads to the normalization of the impactor and a decrease in the effective thickness of the barrier with its perforation. In contrast, at a negative angle of attack, the impactor rebounds from the barrier.
Optimization of a program for launching the payload on a specified trajectory
Authors:   Baltic State Technical University ", Glazunov Aleksandr S. ,   VOENMEKH ",   named after D.F. Ustinov, Sizova Anastasiya A. ,   Baltic State Technical University " VOENMEKH " named after D.F. Ustinov, Petrova Irina L. ,   Baltic State Technical University " VOENMEKH " named after D.F. Ustinov
Published: February 2023

In this paper, the problem of choosing and optimizing a program for launching the payload (PL) into a specified circular orbit is considered. Both direct insertion into the circular orbit and the insertion using an intermediate elliptical orbit are examined. The mass range of the PL, which can be placed into the circular orbit with specified parameters, is calculated. The PL is launched using a medium-class launch vehicle (LV), which is proposed to be a hypothetical ballistic missile withdrawn from service. The LV movement program is divided into two sections: the escape from the atmosphere and the launch section. Both sections use a control program with the pitch angle as a parameter. The optimal parameters for the program are determined. Direct insertion into the circular orbit is revealed to be possible for a very limited range of PL masses. It is shown that the range can be significantly extended if an intermediate elliptical orbit is used. The study results prove that the use of the selected LV allows placing the PL in the specified circular and elliptical orbits. For the formation of the orbital trajectories of the PL launch, it is possible to use an almost invariable parametric class of LV flight control programs.
Evaluation of local mechanical properties of SiO2-based ceramic refractories using microscale modeling
Authors:   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Grigoriev Aleksandr S. , Dmitriev Andrey I. ,   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences; Tomsk State University, Shil’ko Evgeniy V. ,   Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences; Tomsk State University
Published: February 2023

The development of multiscale mechanical models of promising refractory materials is an urgent problem in the mechanics of solids. One of the reasons is the applicability of these models when creating digital twins of advanced refractories. The authors of this paper recently developed and validated a mesoscopic model of the SiO2-based refractory material that is widely used in metallurgy. This model takes into account the characteristic structural features of SiO2 refractory in the scale range of 10-5 - 10-2 m and the mechanical behavior features in a wide range of strain rates. However, the full use of the model requires knowledge of local mechanical properties of mesoscopic structural elements, in particular, the highly porous regions, which are formed by fine grains less than 102 pm in size. An experimental study of effective mechanical characteristics of such regions is an extremely difficult task. Therefore, the purpose of this work is to obtain the theoretical estimate using the microscale numerical simulation of highly porous regions of SiO2 refractory material and to determine their integral mechanical characteristics. To study this problem, the two-dimensional model samples are developed that simulate fine-grained regions of the refractory and are characterized by different porosity and pore structure types (channel-like or closed type). The intervals of the variation of Young’s modulus and strength characteristics of the samples are obtained depending on the porosity and morphology of the pore space. The contribution of the closed-type porosity to the integral mechanical characteristics of the refractory is determined; though, the volume fraction of such pores is low as compared to that of the channel-like pores. The obtained data will be used as input parameters of mesoscale refractory models for solving the urgent problems related to the study of the effect of microstructure parameters on the macroscopic mechanical and thermomechanical properties of SiO2-based refractories.
Estimation of the trajectory of meteoroids from Martian clusters
Authors:   Sadovsky Institute of Geosphere Dynamics Russian Academy of Science, Podobnaya Elena D. , Popova Olga P. ,   Sadovsky Institute of Geosphere Dynamics Russian Academy of Science, Glazachev Dmitry O. ,   Sadovsky Institute of Geosphere Dynamics Russian Academy of Science
Published: February 2023

Recently, about 1200 fresh meteoroid impact sites were discovered on Mars, they are single craters and crater fields with crater sizes up to 50 m. Atmosphere density on the surface of Mars corresponds to about 30 km height of the Earth's atmosphere. Thus, scattering fields of craters on Mars allow one to study fragmentation details, which are hidden in terrestrial conditions. Previously, data on 77 Martian clusters were analyzed. To estimate the trajectory of meteoroids, the scattering ellipses were constructed. The ellipse size determines the angle of the meteoroid entry into the atmosphere and provides information about the height of destruction and the density of a space object. For more than 70% of clusters, the obtained azimuth estimations are within 20° of those determined by independent evaluations. For some clusters, the flight direction can be specified from crater ejecta on Martian HiRISE images. Estimations of azimuth angles for 42 clusters coincide with previous results obtained for 70% of clusters, while the data on the flight direction fit only for 30%. The discrepancy between different estimations of azimuth angles requires the use of other approaches. Continuing on the topic, this work presents numerical modeling of the flight and fragmentation of a meteoroid in the atmospheres of two planets, Mars and Earth. It is assumed that the simulation results will allow one to determine meteoroid parameters, in particular, the trajectory parameters. The main purpose of the presented work is to demonstrate the efficiency of the fragmentation model, its applicability to Martian clusters, and the difference in the scattering fields on the Earth and Mars: the atmospheric sorting effect is weak on Mars, and the scattering field is mainly dependent on fragmentation and the lateral spreading of fragments. The area of the simulated cluster is described with an accuracy of about 10%; the size of the maximum crater, with an accuracy of about 35%. The ratios of crater diameters to the maximum crater diameter for the model and real cluster are close to each other. In the future, it is planned to implement a series of numerical simulations with different initial data and to compare the results with real clusters on Mars, which have already been analyzed in previous works. The aim is to propose the advanced methods for determining the direction of the flight of meteoroids and the properties of impactors such as density and strength.
The generic complexity of the graph triangulation problem
Authors:   Institute of Mathematics named after S. L. Sobolev SB RAS, Rybalov Alexander N.
Published: February 2023

Generic-case approach to algorithmic problems was suggested by A. Miasnikov, V. Kapovich, P. Schupp, and V. Shpilrain in 2003. This approach studies behavior of an algorithm on typical (almost all) inputs and ignores the rest of inputs. In this paper, we study the generic complexity of the graph triangulation problem. This problem is as follows. Given a finite simple graph with 3n vertices, determine whether the vertices of the graph can be divided into n three-element sets, each of which contains vertices connected by edges of the original graph (that is, they are triangles). NP-completeness of this problem was proved by Shaffer in 1974 and is mentioned in the classic monograph by M. Garey and D. Johnson. We prove that under the conditions P ≠ NP and P = BPP there is no polynomial strongly generic algorithm for this problem. A strongly generic algorithm solves a problem not on the whole set of inputs, but on a subset whose frequency sequence converges exponentially to 1 with increasing size. To prove the theorem, we use the method of generic amplification, which allows one to construct generically hard problems from the problems that are hard in the classical sense. The main component of this method is the cloning technique, which combines the inputs of a problem together into sufficiently large sets of equivalent inputs. Equivalence is understood in the sense that the problem for them is solved in a similar way.
Application of idempotent algebra methods in genetic algorithm for solving the scheduling problem
Authors:   Siberian Federal University, Bulavchuk Alexander M. , Semenova Darya V. ,   Siberian Federal University
Published: February 2023

The resource-constrained project scheduling problem in monetary form is considered. The criterion for the optimal start schedule for each project activity is the maximum net present value, which fulfills the constraints on sufficiency of funds and takes into account the technological relationship between the activities. This problem is NP-hard in a strong sense. It is proved that the project schedule can be represented as a solution of a linear equation over an idempotent semiring. A sufficient condition has been established for the admissibility of the schedule in terms of the partial order of work and the duration of the project. It is proved that each of the project schedules can be represented as a product of a matrix of a special form, calculated on the basis of the partial order matrix of the project, and a vector from an idempotent semimodule. For the coordinates of the vector, upper and lower limits have been determined, taking into account the timing of the activity. A description of the genetic algorithm for solving the problem is given. The algorithm is based on the evolution of a population whose individuals represent solutions of an idempotent equation for a partial order matrix of the project. The computational experiments demonstrate the effectiveness of the algorithm.
About the rate of normal approximation for the distribution of the number of repetitions in a stationary discrete random sequence
Authors:   Steklov Mathematical Institute of Russian Academy of Sciences, Mikhailov Vladimir G. , Mezhennaya Natalia M. ,   Bauman Moscow State Technical University
Published: February 2023

The paper presents the problem of asymptotic normality of the number of r-fold repetitions of characters in a segment of a (strictly) stationary discrete random sequence on the set {1, 2,..., N} with the uniformly strong mixing property. It is shown that in the case when the uniformly strong mixing coefficient φ(t) for an arbitrarily given α > 0 decreases as t-6-α, then the distance in the uniform metric between the distribution function of the number of repetitions and the distribution function of the standard normal law decreases at a rate of O(n- δ) with increasing sequence length n for any α ∈ (0; α (32 + 4α )-1)).
A direct method for calculating cell cycles of a block map of a simple planar graph
Authors:   Far Eastern Federal University, Ivanov Boris N.
Published: February 2023

The proposed algorithm for calculating the cycles of the cells the simple planar graph block map is an extension of the classical depth-first search algorithm for cycles of the DFS-basis. The key idea of the modification of this algorithm is the strategy of right-hand traversal when passing the graph in depth. The vertex with the minimum coordinate on the OY axis is assigned as the starting vertex in the right-hand traversal. The exit from the initial vertex is performed along the edge with the minimum polar angle. The continuation of the traversal from each next vertex is carried out along an edge with a minimum polar angle relative to the edge along which arrived at the current vertex. A two-level structure of nested cycles is introduced. This is the main level and the zero level of nesting. All cycles of the basis belong to the main level. Each of the cycles can additionally have a zero level of nesting in another main cycle for it, if it is nested in the main cycle and not nested in any other cycle from the main cycle. With the right-hand traversal, zero nesting cycles are adjacent to the main cycle and do not have common vertices outside the main cycle. These two properties allowed in each basis cycle sequentially select and exclude from it all its zero nesting cycles, using the symmetric difference operation. It is shown that the rest of the basic cycle is the cycle of the block map cell. The complexity of each step of the proposed algorithm does not exceed the quadratic complexity with respect to the number of vertices of the simple planar graph.
El control telemático en España: ámbitos de aplicación, comparativa con el contexto europeo y debates abiertos
Authors: López Riba José María
Published: February 2023

Este artículo tiene por objeto realizar una aproximación al control telemático en España así como presentar una comparativa con el ámbito europeo y exponer algunos de los debates abiertos en la literatura criminológica sobre esta medida. Partiendo de una breve historia sobre su introducción en el contexto español, seguidamente se realiza un repaso por los principales ámbitos de aplicación del control telemático en España: como medida cautelar, como forma de ejecutar la localización permanente, como modalidad de ejecución del tercer grado penitenciario, como obligación durante los permisos penitenciarios y, recientemente, como acompañamiento a la medida de seguridad postpenitenciaria de libertad vigilada. A continuación se presenta la medida en el contexto europeo, para lo que se exponen los ámbitos de aplicación en otros países y algunos datos sobre su uso. Por último, se presentan algunas cuestiones debatidas por la literatura criminológica sobre esta medida: su eficacia en la reducción de la reincidencia, si representa realmente una alternativa a la prisión, si reduce costesal sistema penal o es un paso hacía la privatización de este, y finalmente si es una medida con suficiente carga punitiva para ser considerada un castigo como tal.
Los delitos de financiación ilegal de campañas políticas del código penal colombiano a la luz del principio de proporcionalidad
Authors: Escobar Osorio Ricardo
Published: February 2023

El objetivo del presente trabajo es el de determinar si los delitos de financiación ilegal de campañas políticas del Código Penal colombiano gozan de legitimidad material. Para verificar tal cuestión, se hará uso de una herramienta argumentativa particular: el principio de proporcionalidad.
Investor overreaction to political news: the case of Turkey
Authors: Gencyurek Ahmet Galip
Published: February 2023

Purpose – Information underlies the stock price movements. There are lots of economic and political news that have an impact on the stock price. Unlike other studies (extensively considering economic news), this paper aims to detect abnormal returns resulting from important political news from 2010 to 2022 in Turkey.
Methodology – To determine the abnormal returns-overreactions, this paper utilized the market-based event study approach and the results were corroborated by non-parametric test statistics.
Findings – Crucial important news occurring between 2010-2022, led to statistically significant negative abnormal reactions the day before the event days. These results show that the banking sector dissociates negatively from reference market reaction.
Conclusion – It is deduced that some investors got information about political events before the events day, and so they priced the information. This result implies that Semi- Strong Efficient Market Hypothesis is not valid.

Keywords: Political events, event study, efficient market hypothesis, non-parametric test
JEL Codes: G14,G21