bluuebunny/crossref_metadata_2025_split huggingface dataset:
Urbanization and environmental disruption of catchment basins as a result of housing development at Cidade Operária and adjacencies, Maranhão Island
Authors: Sousa Izis Deise Silva de , Veloso Geiza Paula de Sousa , Dias Luiz Jorge Bezerra da Silva 
Published: December 2022

The Industrial Revolution was followed by an increase in the rates of urbanization, particularly
after the second-half of the 20th
century. In this context, Sao Luis, the capital city of
Maranhao State, adopted a housing development policy that was aimed at reducing the
housing deficit in the municipality. The construction of the Cidade Operaria housing complex
was a response to these explicit social needs, which have intensified since the 1970s. The
occupation of the complex, however, resulted in considerable damage to the ecological
integrity of the adjacent habitats. The complex is located in the catchment basin of the
Paciencia and Santo Antonio rivers, at the center of the Maranhao Island. This study analyzes
the spatial and temporal dynamics of the area's urbanization process, which occurred in three
phases: the period between 1976 and 1981 saw the removal of the original vegetation cover in
some areas, as a result of the first settlement in Parque Zelandia. During that period,
subsistence agriculture was common practice along the margins of streams and rivers. The
second phase corresponds to the construction of the Cidade Operaria housing complex, which
occurred between 1981 and 1988. During that time, 860 ha of land were cleared and
urbanized, resulting in considerable environmental damage. Changes of relief, due to grading
and earthmoving activities, lead to irreversible modifications in the course of rivers and
streams; many tributaries of the rivers Paciencia and Santo Antonio had theirs springs
smothered by earthfills; construction of houses and the use of asphalt on roads reduced soil
permeability, increasing the depth of the water table; the release of untreated sewage
contaminated the drainage basins. During the third phase, which started in 1988, the
environmental degradation was intensified by the occupation of areas adjacent to the housin complex. This model of urbanization has caused irreversible damage to the hydrology and
water quality in the study area, and this article aims to provide an incentive for the creation of
land-use planning and management strategies that include protective and restorative measures
to reduce degradation of catchment basins as a result of urbanization
Análise do principais fluxos aéreos dos aeroportos da capital mineira e suas recentes transformações / Analysis of the main aerial flows of the airports of the mining capital and its recent transformations
Authors: Diniz Alexandre Magno Alves , Diniz Leoni Carlos Alvarenga 
Published: December 2022

O presente artigo analisa a intensidade e a direção dos fluxos aéreos oriundos e destinados aos
principais aeroportos de Minas Gerais, contabilizando e mapeando a movimentação de passageiros,
cargas e aeronaves. Busca-se identificar as áreas de influência dos principais aeroportos, bem
como a importância econômica dos mesmos para o processo de desenvolvimento do Estado.
Emprega-se como suporte para a presente análise, o Modelo Alternativo de Geração de Viagens
Urbanas. Este modelo auxilia a compreensão das mudanças vivenciadas pelo setor aeroviário
mineiro, em especial aquelas processadas em Belo Horizonte, no que tange à demanda por
transporte aéreo de passageiros e cargas. No bojo destas transformações, são também apresentadas
e discutidas as principais causas e conseqÃ¼ências da recente transferência dos vôos comerciais
regulares do Aeroporto de Belo Horizonte (Pampulha) para o Aeroporto Internacional Tancredo
Neves (Confins). Os dados e as análises comparativas referentes aos fluxos aéreos dos aeroportos
mineiros, em relação às procedências e destinos, são processados e mapeados, com o intuito de
facilitar a identificação das áreas de influência dos aeroportos, bem como os impactos que estes
têm no desenvolvimento regional do Estado. Os resultados revelam que os aeroportos mineiros
guardam relação estreita com aqueles localizados nas cidades de São Paulo e Rio de Janeiro,
denotando a dependência que o setor aeroviário mineiro tem em relação Ã quelas praças.
O Livro didático nas séries iniciais: os "Diversos olhares" para uma coleção de geografia / TEXTBOOKS AND THE FIRST GRADES OF ELEMENTARY SCHOOL: several "points of viewâ€? for an edited textbook of Geography.
Authors: Santos Jakes Paulo Félix dos , Gomes Suely Aparecida 
Published: December 2022

A idéia que nos instigou a pesquisar sobre o uso do livro didático de Geografia nas séries iniciais
do ensino fundamental, surgiu a partir de diversas discussões em sala de aula no Curso de Geografia
da Faculdade Católica de Uberlândia-MG. O assunto é polêmico e há divergências quanto à sua
importância e seu uso pelos professores. Assim, escolhemos uma coleção para análise, utilizada
em várias escolas da rede pública estadual em Uberlândia-MG. Procuramos identificar e analisar
a maneira como alguns conceitos geográficos, a nosso ver fundamentais para a compreensão do
espaço geográfico, são abordados nos livros didáticos. Ao buscar compreender a proposta
pedagógica de alguns livros didáticos de Geografia para as séries iniciais do Ensino Fundamental
faz-se necessário avaliar o referencial metodológico utilizado por seu autor - ou autores - e os
critérios que motivam sua escolha pelos professores e pelas escolas. Para dar efeito à análise,
comparamos o conteúdo programático sugerido pela Secretaria de Estado da Educação de Minas
Gerais com o conteúdo programático da coleção em foco. O objetivo desta análise não é, de modo
algum, desmerecer a obra, mas apontar caminhos e alguns critérios relevantes na escolha dos
livros didáticos para as séries iniciais do ensino fundamental. Este instrumento, a nosso ver, não
deve fomentar a discriminação, tampouco estampar imparcialidade ou neutralidade. Todavia,
deve oferecer elementos para que professores e alunos exerçam seu potencial e sua criatividade
sobre os temas propostos como uma ferramenta a mais a ser utilizada eficazmente em sala de aula.
ANÁLISE UNIDIMENSIONAL DOS PROCESSOS DE MISTURA NO SISTEMA ESTUARINO DO RIO PERIÁ (MA), BRASIL
Authors: Alcântara Enner Herenio de , Harari Joseph 
Published: December 2022

O presente trabalho tem como objetivo analisar os processos de mistura no sistema
estuarino do Rio Periá (MA) e zonear o sistema através da classificação de Kjerfve
(1987). Foi utilizado o modelo matemático de Dyer e Taylor (1973), para analisar os
processos de mistura. Para obtenção dos objetivos, a batimetria do sistema estuarino
foi levantada, e com a mesma foram delimitados os limites atingidos pelas marés alta
e baixa. Foram analisados, num padrão unidimensional: as salinidades e as
concentrações e/ou frações de água doce nas marés alta e baixa; as taxas e os tempos
de descarga; e os volumes de água doce retidos no estuário nas estofas de enchente
e vazante. Foram obtidos os seguintes resultados: o volume de água no sistema possuí
um máximo de 64,96 * 106 m3e um mínimo 0,12 * 106 m3; o prisma de maré possui
máximo 7,1 * 106 m3 e mínimo de 0,045 * 106 m3; a concentração de água doce foi
maior na maré baixa (0,99 * 106 m3) do que na alta (0,91 * 106 m3); a concentração
de sal foi sempre maior na maré alta do que na baixa, sendo o valor máximo de 34
ups e o mínimo de 0,34 ups; quanto ao volume de água retido nas estofas de maré
baixa e alta, foi maior na estofa de vazante (5,36* 106 m3) do que na de enchente
(1,12 * 106 m3); finalmente, os tempos de descarga apresentaram maior valor na
maré alta (2 períodos de maré) e menor na maré baixa (1,24 períodos de maré). O
estudo permite concluir que a salinidade e a descarga de água doce no sistema
estuarino do Rio Periá são os fatores dominantes nos processos de mistura do mesmo.
LOCALIDADES FOSSILÍFERAS DO CRETÁCEO SUPERIOR DA REGIÃO DO TRIÂNGULO MINEIRO (ESTADO DE MINAS GERAIS, BRASIL)
Authors: Oliveira Emerson C. de , Santos Adriano R. , Candeiro Carlos Roberto A. 
Published: December 2022

Desde 1940 fósseis de vertebrados e invertebrados têm sido encontrados em rochas do Grupo
Bauru (Cretáceo Superior), na região do Triângulo Mineiro, porção oeste do Estado de Minas
Gerais, Brasil. As formações Adamantina, Uberaba e Marília compõem o referido grupo sendo
suas respectivas idades Turoniana-Santoniana, Coniaciana-Santoniana e Neomaastrichtiano. As
ocorrências do Triângulo Mineiro são encontradas nos municípios de Campina Verde, Iturama,
Monte Alegre de Minas, Prata, Uberaba e Uberlândia e são representados por moluscos, plantas,
sapos, tartarugas, lagartos, crocodiliformes e dinossauros. Essa paleofauna habitou um ambiente
de condição árida e semi-árida. Sendo paleofauna representada exclusivamente por espécimes
sul-americanas que são proximamente relacionados com o registro fóssil proveniente do
Neocretáceo da Argentina.
Construction and Analysis of Petri Net Model for Distributed Cyber Physical Systems
Authors: Sood Vikas , Nema Malay Kumar , Kumar Rituraj , Nene Manisha J 
Published: December 2022

A Distributed Cyber-Physical System (DCPS) composition poses challenges in determining its emergent behaviour. These challenges occur due to (1) the appearance of causal loops of information and energy flow through cyber and physical channels and (2) inherent non-determinism in the temporally ordered flow of events within independently evolving interacting processes of Constituent Systems (CSs). Hence, there is a need to construct a model of the envisaged schematic of DCPS composition for analysis and verification of its significant properties in the conceptual design stage of the system development life cycle.
This paper presents a procedure to construct DCPS composition models in Petri net formalism using distributed abstractions. The model for each CS is obtained from elementary constructs using compositional operators. The interaction among CSs occurs through channels obtained by connecting send and receive constructs of two CSs participating in an interaction. The internal processing within a CS characterizing its primary function is abstracted in a generic passthrough construct. Representing these constructs with compositional operators results in the complete DCPS model in Petri net formalism. A toolchain with Reference net workshop (Renew) as an integrated Petri net editing and analysis platform is configured to support DCPS modelling, simulation and analysis. The Renew tool functionality has been enhanced with a plugin designed and developed by authors to facilitate the drawing of the distributed composition model.
A low-level Petri net analysis (Lola) v2.0 plugin is employed to verify the Petri net and temporal properties of the modelled DCPS scenarios. The properties of the resultant model are verified using well-established algorithms to analyze Petri nets. Further, system properties specified using temporal logic can be verified using model-checking algorithms for Petri nets. A moderately complex scenario involving interactions among six CSs illustrates the presented approach.
Context matters: toward a multilevel perspective on context in clinical reasoning and error
Authors: Choi Justin J. , Durning Steven J. 
Published: December 2022

AbstractContext in diagnosis and management of patients is a vexing phenomenon in medicine and health professions education that can lead to unwanted variation in clinical reasoning performance and even errors that cause patient harm. Studies have examined individual-, team-, and system-level contextual factors, but the ways in which multiple contextual factors can interact, how both distracting and enabling factors can impact performance and error, and the boundaries between context and content information are not well understood. In this paper, we use a theory-based approach to enhance our understanding of context. We introduce a multilevel perspective on context that extends prior models of clinical reasoning and propose a micro-meso-macro framework to provide a more integrated understanding of how clinical reasoning is both influenced by and emerges from multiple contextual factors. The multilevel approach can also be used to study other social phenomena in medicine such as professionalism, learning, burnout, and implicit bias. We call for a new paradigm in clinical reasoning research and education that uses multilevel theory and analysis to enhance clinical reasoning performance expertise and improve the quality of patient care.
Monitoring the boundary of an adhesive coating to a steel substrate with an ultrasonic Rayleigh wave
Authors: Ulbrich Dariusz 
Published: December 2022

Abstract
Coating–substrate adhesive joints are used in mechanical engineering and automotive vehicle construction. Monitoring their condition, both at the manufacturing and operational stages, is important for durability and extended lifetime. The article proposes a method for continuous monitoring of the state of the coating–substrate joint using ultrasonic surface wave. The waveforms of ultrasonic parameters such as gain of pulse of ultrasonic wave, resonant frequency and bandwidth over the lifetime of the tested joint were determined. The resonant frequency change precedes the final stage of degradation of the coating–substrate connection, which leads to complete detachment of the coating from the body sheet. Both, during the period of constitution and degradation, rapid changes in the pulse gain of the ultrasonic surface wave were recorded. The knowledge about the waveforms of the selected ultrasonic wave parameters makes it possible to assess the condition of the joint and is the basis for deciding on its further operation or repair.
A new insight into the reaction mechanism in preparation of poly(phenylene sulfide)
Authors: Yin Hong , Shen Yao , Chen Zhirong , Yuan Shenfeng , Chen Xiaofeng , Wang Shihui , Jia Yanyu , Jiang Jie , Jia Jinbo , Deng Hangjun 
Published: December 2022

Abstract
The substitutions of the chlorine atoms in p-dichlorobenzene (DCB) or the chlorine end-groups of polyphenylene sulfide (PPS) by sodium N-methyl-4-aminobutyrate (SMAB) are important reactions in the polymerization of PPS. The reaction process of DCB with SMAB was studied under conditions similar to the polymerization of PPS. The molecular structures of the products were analyzed through high-performance liquid chromatography, liquid chromatography-mass spectroscopy, gas chromatography-mass spectrometry, and other methods. Several pairs of para- and meta-isomer products were found, which indicates the coexistence of both nucleophilic addition–elimination (SN2Ar) mechanism and aryne intermediate mechanism. Based on mechanism analysis, the networks of reactions of DCB with SMAB were proposed and the effects of the ratio of SMAB to DCB, water content, and temperature on the reaction process were studied.
Online language education courses: a Chinese case from an ecological perspective
Authors: Mei Fang , Lu Yunru , Ma Qing 
Published: December 2022

Abstract
In this study, we examined the usefulness of and students’ perceptions of a one-to-one online oral EFL course. Based on van Lier’s learning theory of ecology, we studied the positive aspects that encouraged learning and the negative aspects that required improvement. A total of 18 young-adult English learners from different parts of China were invited to attend three one-to-one (teacher–learner) online lessons designed by the researchers. A quasi-experimental one-group design was used to examine the effectiveness of the online course. In addition, an online survey and semi-structured individual interviews were conducted to reveal the learners’ views and perspectives on the course. The results indicated that the participants made good progress in terms of complexity in oral skills and perceived the course to be highly useful, especially regarding opportunities to express personal views, timely scaffolding, and efficient feedback from the teacher. Based on the findings, a number of implications for improving the course are provided, in addition to suggestions for a better one-to-one online oral English course model.
The viability of cell that encapsulated in calcium alginate hydrogel beads
Authors: Li Fang-Fang , Tang Wei-Feng , Xie Qiu-Fei 
Published: December 2022

Abstract

Objective
To prove that calcium alginate beads can be used as scaffolds during in vitro culture.

Methods
Mouse preosteoblastic cells (MC3T3-E1) were encapsulated in calcium alginate hydrogel beads. The Cell Counting Kit-8 (CCK-8) assay was used to assess cell viability at 2, 5, 8, 11, 14, and 21 days. Calcein-AM and propidium iodide (PI) were employed for live/dead staining.

Results
MC3T3-E1 cells were alive on day 21 and had the highest viability on day 14.

Conclusion
MC3T3-E1 cells could be encapsulated in calcium alginate hydrogel beads and cultured. Calcium alginate hydrogel beads can be used as scaffolds for three-dimensional in vitro culture.
Soziale Systeme? Systemtheorie digitaler Organisation
Authors: Manhart Sebastian , Wendt Thomas 
Published: December 2022

Zusammenfassung
Digitalisierung erscheint als Fortsetzung der Organisation mit anderen Mitteln: Digitalisierung vollzieht sich vor allem in und durch Organisationen, was diese in ihrer Struktur nachhaltig verändert. Dies wirft die Frage nach der Form und Funktion von Organisationen in der digitalen Gesellschaft auf und erfordert eine Neufassung der Theorie der Organisation. Für die Digitalisierung wie für Organisationen ist die operative Differenzierung zwischen Information und Kommunikation zentral. Die paradoxe Evidenz einer ausbleibenden Wahrnehmung dieser Sinndifferenz wird genutzt, um ein präzisiertes systemtheoretisches Verständnis von Digitalisierung und Organisation vorzuschlagen. Ein Vergleich wahrnehmungsneutraler Informationsverarbeitung mit der wahrnehmungskultivierenden Kunst verortet die semiotische Differenzierung des Sinnbegriffs systematisch in der Systemtheorie. An Beispielen aus der Geschichte des Managements und des organisierten Messens wird der Ausdifferenzierungsprozess in seiner empirischen Triftigkeit vorgeführt. Der Artikel schließt mit einem Ausblick auf die Konsequenzen der subtilen Organisation der Digitalisierung für die Gesellschaft.
Verantwortungsvolle Maschinen ohne Verantwortlichkeit? Datenintensive Algorithmen in Organisationen
Authors: Besio Cristina , Fedtke Cornelia , Grothe-Hammer Michael , Karafillidis Athanasios , Pronzini Andrea 
Published: December 2022

Zusammenfassung
Die Frage der Verschiebung von Verantwortung, die durch den vermehrten Einsatz von datenintensiven Algorithmen verursacht wird, beschäftigt seit einigen Jahren die sozialwissenschaftliche Forschung. Dabei geht es vor allem darum, welche Personen oder Instanzen dafür verantwortlich sein sollen, wenn sich Entscheidungen als diskriminierend, sachlich falsch oder ungerecht herausstellen. Aus soziologischer Perspektive fällt auf, dass in diesen Debatten nicht trennscharf zwischen Verantwortung und Verantwortlichkeit unterschieden wird. In unserem Beitrag greifen wir diese Unterscheidung so wie sie von Niklas Luhmann formuliert wurde auf, um Veränderungen und Kontinuitäten des Organisierens zu analysieren, die mit dem Einsatz datenintensiver Algorithmen verbunden sind. Wir zeigen, dass Algorithmen in organisationalen Entscheidungsprozessen Unsicherheit absorbieren und somit durchaus Verantwortung übernehmen, aber nicht für Fehler verantwortlich gemacht werden können. Durch den Einsatz von Algorithmen wird Verantwortung in Assemblagen von Personen und Technik zerlegt, während die Zuschreibung von Verantwortlichkeit hochgradig kontrovers wird. Daraus entstehen neue Diskrepanzen zwischen Verantwortung und Verantwortlichkeit, die insbesondere für das organisationsinterne Vertrauen und die Innovationsfähigkeit von Organisationen folgenreich sein können.
An Empirical Investigation of Psychodynamic Conflicts in Stable Couples
Authors: Akın Aslı , Winter Sibylle M. , Sarrar Lea 
Published: December 2022

Introduction: Previous investigations have shown that stressful and pathological developments in couple relationships can be psychodynamically explained by rigid unconscious couple collusions. This manuscript presents and discusses the findings of a pilot study in which the psychodynamic conflicts of stable and “functioning” couples were empirically explored.Methods: We studied 116 couples (N = 232) who were currently married or in a steady relationship, had at least one child together, and showed no signs of mental disorders. Psychodynamic conflicts were measured using the OPD Conflict Questionnaire, and the Patient Health Questionnaire was used to screen for mental disorders.Results: Significant differences in the mean scores of psychodynamic conflicts between mothers and fathers appeared in the individuation versus dependency conflict, the self-worth conflict, and the guilt conflict. The maternal and paternal self-worth conflicts were associated with their socio-economic status. Parent couples mainly showed positive associations in the same coping modes and correlations between different conflict topics.Discussion: Our results provide initial insights into the psychodynamic conflicts of mothers and fathers from a nonclinical population and indicate that healthy and stable couple relationships are characterized by concordant and health-promoting ways of dealing with inner conflicts. Future longitudinal studies are needed to understand the influences of psychodynamic conflicts on the formation and maintenance of well-functioning and lasting relationships between couples.
Green Concrete: An Eco-Friendly Alternative to the OPC Concrete
Authors: Hashmi Dr. Ahmad Fuzail , M.S. Khan  , M. Bilal  , M. Shariq  , A. Baqi  
Published: December 2022

The popularity of concrete has resulted in the considerable consumption of natural resources and significant emission of CO2 gas into the atmosphere. The key constituents of the concrete are the cement and the natural aggregates. These major concrete elements are recommended to be replaced with other materials to solve sustainability issues. Hence, by-products like pulverized granular blast-furnace slag, fly ash, rice husk ash, silica fume, recycled coarse aggregates etc., are added to the concrete to utilize the waste products and produce sustainable concrete. Cement manufacturing accounts for 8 to 10% of total global CO2 emissions. The construction industry is progressively adopting green concrete use in buildings because of its inherent benefits and limitations of traditional concrete. Green concrete is available in a variety of forms such as high-volume fly ash concrete, alkali-activated concrete, recycled aggregate concrete, ultra-high performance concrete, geopolymer concrete etc. Green concrete has various environmental, technical, and economic advantages i.e., greater durability, enhanced workability, and pumpability, decreased permeability, controlled bleeding, higher acid resistance, and decreased plastic shrinkage cracking. These properties encourage faster concrete production, shorter curing times, lower construction costs, earlier project completion, lower maintenance costs, and longer service life of construction projects. This review article aims to comprehensively explain the fresh, hardened, and durability properties of green concrete and knowledge gaps in green concrete. The literature revealed that further research is needed to accurately assess the long-term properties, notably creep and shrinkage behaviour of structural or reinforced elements of green concrete.