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Proceeding Series of the Brazilian Society of Computational and Applied Mathematics最新文献

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Adaptabilidade e Estabilidade de Cultivares de Aveia à Resistência as Doenças e Produtividade no Posicionamento em Cultivo de Base Agroecológica 燕麦栽培品种在农业生态耕作中的抗病性和生产率的适应性和稳定性
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0015
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引用次数: 0
Conexão de Equilíbrios e Órbitas Fechadas Hiperbólicas na Fronteira da Região de Estabilidade de Sistemas Dinâmicos Não Lineares 非线性动力学系统稳定区边界上的均衡点与封闭双曲轨道的连接
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0033
L. Alberto, F. M. Amaral
hete-roclínicas
泌尿科
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引用次数: 0
A simple algorithm for reliability evaluation of stochastic-flow networks under distance limitation 距离限制下随机流量网络可靠性评估的简单算法
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0014
M. Forghani-elahabad, Ufabc SP Cmcc
. Various real-world systems, including computer and communication networks, transportation, and distribution systems, can be modeled as a stochastic/multistate flow network (MFN). Reliability indices are of great importance in evaluating the quality of service in MFNs. One such index is the two-terminal reliability (2TR), which represents the probability that the maximum flow in the network is not less than a certain demand level. Researchers have investigated the 2TR problem for MFNs, considering constraints such as budget, time, or distance limitations. Nevertheless, distance constraints have received relatively less attention in the literature, despite their significant role in optimizing the efficiency of some transmission networks. Hence, this study focuses on the 2TR problem with a distance constraint in an MFN and proposes a simple yet efficient algorithm to solve it. We demonstrate the effectiveness of our algorithm through a benchmark example.
.现实世界中的各种系统,包括计算机和通信网络、运输和配送系统,都可以建模为随机/多态流动网络(MFN)。可靠性指数对评估多态流动网络的服务质量非常重要。其中一个指标是双终端可靠性(2TR),它表示网络中最大流量不低于某一需求水平的概率。考虑到预算、时间或距离限制等约束条件,研究人员对多频网络的 2TR 问题进行了研究。然而,尽管距离限制在优化某些输电网络效率方面发挥着重要作用,但文献中对距离限制的关注相对较少。因此,本研究将重点放在中频网络中带有距离约束的 2TR 问题上,并提出了一种简单而高效的算法来解决该问题。我们通过一个基准示例演示了算法的有效性。
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引用次数: 0
Consumo de Energia do Bitcoin na Era das Criptomoedas: um Estudo Exploratório e de Previsão Baseado em Dados 加密货币时代的比特币能源消耗:基于数据的探索性预测研究
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0035
Pedro Mark Bianchi, Marilaine Colnago, R. S. Ferreira, W. Casaca
capturar o quadro geral do uso de energia relacionado à mineração, bem como apoiar planos de sustentabilidade energética para países que têm sofrido com atividades de mineração em larga escala. Palavras-chave . Sustentabilidade Energética, Criptomoedas, Regressão, Séries Temporais.
以了解与采矿有关的能源使用的总体情况,并为受大规模采矿活动影响的国家的能源可持续发展计划提供支持。关键词 .能源可持续性、加密货币、回归、时间序列。
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引用次数: 0
Influence of asynchronous parametric excitation in stability maps of the simplest electromechanical system 异步参数激励对最简单机电系统稳定性图的影响
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0062
R. Lima, Rubens Sampaio
. In this paper the influence of asynchronous parametric excitation in stability maps of the simplest electromechanical system is analyzed. The system is composed by two interacting subsystems, a mechanical and an electromagnetic, and it has the minimum number of elements necessary to be classified as an electromechanical system. The system does not have elements that can store potential energies, neither mechanical nor electromagnetic. The system dynamics is written in terms of 2 × 2 inertia matrix M and gyroscopic matrix G . Two parametric excitation terms are introduced in G . The terms have an amplitude ϵ , frequency Ω and asynchrony with respect to each other θ . For different values of θ , stability maps, in terms of ϵ and Ω, are constructed for the electromechanical system with the parametric excitation. In each map, it can be seen stability and instability regions of the trivial solution (system’s equilibrium) of the system. The objective of the paper is to analyze how the value of θ affects these stability and instability regions.
.本文分析了异步参数激励对最简单机电系统稳定性图的影响。该系统由机械和电磁两个相互作用的子系统组成,具有归类为机电系统所需的最少元素数量。系统中没有可以存储势能的元素,既没有机械能,也没有电磁能。系统动力学用 2 × 2 惯性矩阵 M 和陀螺矩阵 G 表示。G 中引入了两个参数激励项。这些激励项有振幅 ϵ 、频率 Ω 和彼此间的不同步性 θ 。针对不同的 θ 值,以 ϵ 和 Ω 为参数激励构建了机电系统的稳定性图。在每个图中,都可以看到系统三解(系统平衡)的稳定和不稳定区域。本文旨在分析 θ 值如何影响这些稳定和不稳定区域。
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引用次数: 0
Evaluating Ordinal Pattern Features for 2D Colored Noise Classification 评估二维彩色噪声分类的正则模式特征
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0049
This study explores the potential of permutation entropy and statistical complexity for analyzing time series and image data of varying dimensions and noise types to extract features for computational vision. We projected one-dimensional colored noise of different sizes and one-and two-dimensional 1 /f noise with different embedding dimensions to observe changes in permutation entropy and statistical complexity. The results of this study provide insights into the usefulness of the permutation entropy and statistical complexity in the analysis of complex time series data for future parameter extraction
本研究探索了置换熵和统计复杂性在分析不同维度和噪声类型的时间序列和图像数据方面的潜力,从而为计算视觉提取特征。我们投射了不同大小的一维彩色噪声和具有不同嵌入维度的一维和二维 1 /f 噪声,以观察置换熵和统计复杂度的变化。这项研究的结果让我们深入了解了置换熵和统计复杂性在分析复杂时间序列数据中的有用性,有助于未来的参数提取。
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引用次数: 0
Uma condição de otimalidade de segunda ordem para Problemas com Restrição de Cardinalidade 卡定性受限问题的二阶最优条件
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0113
Jean Carlos Medeiros, A. A. Ribeiro, Mael Sachine, Leonardo D. Secchin
cardinalidade (
卡达数 (
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引用次数: 0
Probability Models Generated via Line Integral and Joint Life Insurance Application 通过线积分和联合人寿保险应用生成的概率模型
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0084
Nikolai Kolev
. We construct via line integral and characterize a class of bivariate continuous distributions with a multiplicative representation of the sum of hazard gradient components. The corresponding joint survival function is a solution of functional equation allowing to generate new members of the class. We apply a particular member to (cid:28)t a big Canadian joint life insurance data set improving the inference and conclusions made by of another authors.
.我们通过线积分构建并描述了一类具有危险梯度分量之和乘法表示的双变量连续分布。相应的联合生存函数是一个函数方程的解,可以生成该类的新成员。我们将一个特定成员应用于加拿大的一个大型联合人寿保险数据集,从而改进了另一位作者的推论和结论。
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引用次数: 0
Seleção de Parâmetros de Regularização por Minimização de Distâncias Esperadas de Bregman 通过最小化预期布雷格曼距离选择正则化参数
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0094
Elias S. Helou, L. E. A. Simões, S. A. Santos
).
).
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引用次数: 0
Inclusão Feminina em STEM: Experiência do Projeto GECET Através de Atividades de Programação 女性融入科学、技术、工程和数学领域:GECET 项目通过计划活动获得的经验
Pub Date : 2023-12-18 DOI: 10.5540/03.2023.010.01.0061
L. Silva, Marilaine Colnago, Giovana A. Benvenuto, N. Costa, Samantha Lanzelotti, R. S. Ferreira, W. Casaca
Resumo .
摘要 .
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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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