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Flutuações no Brilho da Via Láctea: Da Teoria de Ambartzumian ao Caso Fracionário. 银河亮度的波动:从安巴兹姆理论到分数情况。
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0055
Matheus Tobias Mendonça, S. R. Mazorche
presente
礼品
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引用次数: 0
Usando o Google Earth para reavaliar distâncias e áreas na solução de problemas geométricos 在解决几何问题时,使用谷歌地球重新评估距离和面积
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0114
R. Nós, Fábio Jardim de Almeida
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引用次数: 0
Reconstrução de condutividade térmica ortotrópica com método pseudoespectral de Chebyshev e aplicações 用切比雪夫伪谱法重构正交导热系数及其应用
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0087
Everton Boos, S. V. Fermín, Bazán, V. M. Luchesi
Resumo . Em
摘要 .在
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引用次数: 0
Study of links between people in urban areas based on mobility data for the city of São Paulo 根据圣保罗市的流动数据研究城市地区人与人之间的联系
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0104
Matheus de Moraes, Gonçalves Correia, Jéssica D Lamosa, Vander Luis de Souza Freitas, Lívia Rodrigues Tomás, Leonardo Bacelar, Lima Santos
Our study explores the average degree and clustering of a complex mobility network designed to model and simulate the COVID-19 pandemic. To construct this network, we utilized mobility data collected in São Paulo, creating a network in which each node represents an individual, and each edge weight denotes the duration of contact between individuals during a typical day. By analyzing data from an Origin-Destination Research, we calculated the average degree and weighted clustering coefficient of the network for various minimum contact duration. We aimed to understand the effect of increasing minimum contact duration on network structure. Our findings indicate that networks with different minimum contact duration remained sparse, as the average degree of the generated graphs decreased.
我们的研究探讨了一个复杂流动网络的平均程度和聚类,该网络旨在模拟 COVID-19 大流行。为了构建这个网络,我们利用在圣保罗收集到的流动数据,创建了一个网络,其中每个节点代表一个人,每条边的权重表示人与人之间在典型一天中的接触时间。通过分析 "出发地-目的地研究 "的数据,我们计算出了该网络在不同最小接触持续时间下的平均程度和加权聚类系数。我们的目的是了解增加最短接触时间对网络结构的影响。我们的研究结果表明,随着生成图形的平均度降低,不同最小接触持续时间的网络仍然稀疏。
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引用次数: 0
Reconstrução Tridimensional de uma Subestação de Energia Elétrica para Localização de Equipamentos a Partir de Termogramas 三维重建变电站,从热图定位设备
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0088
F. Ganacim, L. G. Fernandes, E. Schumacher, Nara Bobko, E. F. R. Romaneli
subesta-ção
变电站
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引用次数: 0
Controle do Aedes Aegypti com a Técnica Wolbachia e Armadilhas Impulsivas via Transformação Integral Generalizada 通过广义积分变换利用沃尔巴克氏技术和脉冲诱捕器控制埃及伊蚊
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0036
M. S. Friguis, Izabela S. L. Friguis
Resumo . Desequilíbrio ambiental pode provocar a explosão demográfica de diversas espécies, es-pecialmente vetores de doenças, como é o caso do Aedes Aegypti. Esse mosquito é responsável por propagar doenças como Dengue, Zika Vírus e Chikungunya, além de se reproduzir com facilidade em regiões próximas ao ser humano. Neste trabalho apresenta-se uma combinação entre a técnica Wolbachia
摘要 .环境失衡会导致各种物种的数量激增,尤其是埃及伊蚊等疾病媒介。这种蚊子是传播登革热、寨卡病毒和基孔肯雅热等疾病的罪魁祸首,而且很容易在靠近人类的地区繁殖。这项工作结合了沃尔巴克氏菌技术
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引用次数: 0
Investigation of non-smooth solutions in finite elasticity using the phase-plane method 用相平面法研究有限弹性中的非光滑解
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0064
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引用次数: 0
Otimização de treliças metálicas planas em perfil tubular circular 优化带圆管型材的扁平金属桁架
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0079
Priscila Mantuan Covalski, Tatiane Cazarin da Silva, Utfpr Campo Damat, PR Leandro Mourão, Waidemam
O presente
现在
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引用次数: 0
A Model of Economic Growth in Two Spatial Dimensions 两个空间维度的经济增长模型
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0011
João Plínio, Juchem Neto, Pedro Henrique de Almeida Konzen, J. R. Claeyssen
. In this work we propose a two dimensional version of the spatial Solow-Swan economic growth model with capital-induced labor migration. As in the unidimensional model, the stability analysis results show that the capital-induced labor migration parameter must be greater than a critical value so that the model can generate static spatial agglomerations or spatio-temporal cycles. Numerical simulations show that a more intense capital-induced labor migration and returns to scale in the production process tend to increase the complexity of the two-dimensional spatio-temporal dynamical behavior of the economy. Moreover, in two spatial dimensions the static economic agglomerations generated by the model can assume one of two forms, spots or stripes.
.在这项工作中,我们提出了一个具有资本诱导劳动力迁移的二维版索洛-斯旺空间经济增长模型。与单维模型一样,稳定性分析结果表明,资本诱导的劳动力迁移参数必须大于临界值,这样模型才能产生静态空间聚集或时空循环。数值模拟表明,生产过程中更强烈的资本诱导的劳动力迁移和规模回报往往会增加经济的二维时空动态行为的复杂性。此外,在二维空间中,模型产生的静态经济集聚可以呈现两种形式:斑点或条纹。
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引用次数: 0
On a model for the fake-news diffusion between two interacting populations 关于假新闻在两个相互作用的人群之间传播的模型
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0077
F. T. Cezaro, Luverci, Nascimento Ferreira, A. Cezaro
. The dynamics of information propagating among populations that interact might have an enormous impact on public opinion, particularly when such information is false, known as fake news. In this contribution, we propose and analyze the fake news dissemination that occurs when two distinct sub-populations (not necessarily homogeneous) share information, using a reinterpre-tation of a compartmental model for disease dissemination. We show the model’s well-posedness and present numerically simulated scenarios for the dynamics of fake news spreading among populations, with the model parameters associated with some human development indices. The obtained results show that the velocity of the fake news diffusion among the populations is largely impacted by the gap between the human development indices of each population. They also show that a small percentage of control over the information shared by the population leads to a large decrease in the amount and velocity of fake news diffusion.
.信息在相互影响的人群中传播的动态可能会对舆论产生巨大影响,尤其是当这些信息是虚假的,即所谓的假新闻时。在这篇论文中,我们提出并分析了当两个不同的亚人群(不一定是同质的)共享信息时发生的假新闻传播,使用的是对疾病传播分室模型的重新解释。我们展示了该模型的拟合优度,并对假新闻在人群中传播的动态场景进行了数值模拟,模型参数与一些人类发展指数相关联。结果表明,假新闻在人群中的传播速度在很大程度上受各人群人类发展指数差距的影响。研究还表明,对人口共享信息的控制比例越小,假新闻传播的数量和速度就越低。
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引用次数: 0
期刊
Proceeding Series of the Brazilian Society of Computational and Applied Mathematics
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