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Materias / palabras clave: graph theory, combinatorics, discrete mathematics, computer science; Science: Mathematics

Estudou-se a ontogênese da Teoria da Mente (atribuição de pensamentos e conteúdos mentais a outros indivíduos) por meio da representação gráfica de “balões de pensamento”, examinando-se indicadores de difere...

"Complex networks theory have gained wider applicability since methods for transformation of time series to networks were proposed and successfully tested. In the last few years, horizontal visibility graph has become a ...

This is the first of two chapters of a work in which we consider the unrestricted, minimal, and bounded representation problems for unit interval (UIG) and unit circular-arc (UCA) graphs. In the unrestricted version, a p...

The effects of histidine and its imidazole ring adsorption on the electronic transport properties of graphene were investigated by first-principles calculations within a combination of density functional theory and non-e...

We analyze the entanglement generation of a system composed of two decoupled rotated graphene layers inside a planar microcavity. By considering the electromagnetic field of the cavity in the vacuum state and using time-...

In the present work, density functional theory (DFT) calculations using cluster and slab models were performed in order to study the adsorption of Al dimer on a monovacancy of graphene. With cluster models, two different...

Graphane is obtained by perfectly hydrogenating graphene. There exists an intermediate material, partially hydrogenated graphene (which we call hydrographene), interpolating from pure graphene to pure graphane. Employing...

Singular graphene metasurfaces, conductivity gratings realized by periodically suppressing the local doping level of a graphene sheet, were recently proposed to efficiently harvest THz light and couple it to surface plas...

Highlights The metal single-atom doping strategy was systematically applied to graphdiyne (GDY), an emerging two-dimensional carbon material, and a series of M-N-GDY single-atom microwave absorbers were successfully fabr...

Motivated by Khovanov homology and relations between the Jones polynomial and graph polynomials, we construct a homology theory for embedded graphs from which the chromatic polynomial can be recovered as the Euler charac...

A systematic approach to the synthesis of compliant mechanisms starting from the problem requirements is proposed. The method uses as topological solution space several atlases of compliant mechanisms specialized from ri...

Background Walking impairments post-stroke are common but studying their neural basis with fMRI is difficult due to motion constraints. This study used post-task resting-state residual activity (PTRRA) to investigate wal...

We describe O(n) time algorithms for finding the minimum weighted dominating induced matching of chordal, dually chordal, biconvex, and claw-free graphs. For the first three classes, we prove tight O(n) bounds on the max...

Buscou-se, neste trabalho, construir a rede de relações sociais entre pré-escolares e analisar a pertinência das metodologias utilizadas para a coleta e análise dos dados. Participaram dezessete pré-escolares de um...

Selective electrochemical CO₂ reduction to multi-carbon products remains a central bottleneck for carbon-neutral chemical manufacturing, with most catalysts achieving C₂⁺ Faradaic efficiencies below 75%. This inves...

Abstract In this study, graphitic carbon nitride, often known as g-C₃N₄, has also been shown to be a highly attractive photocatalyst that works well with visible light. However, its performance has been adversely aff...

The purpose of this work was to investigate the interaction of graphene-like nanoclusters with fragments of polymers of the same nature, but of a slightly different structure, for example, polyethylene (PE) and polypropy...

We theoretically investigate the tunneling of two-dimensional surface polaritons (2DSPs) through plasmonic nanoplates on atomically thin crystals. By developing an analytic model based on coupled-mode theory, we examine ...

The article examines threats to the financial and innovative security of hospitality enterprises at the micro and macro levels. The relevance of the topic is due to the fact that the functioning of enterprises in this se...

IntroductionSmoothing fMRI data prior to analysis is a fundamental and widely used technique to increase sensitivity. Unconstrained smoothing can also reduce the spatial specificity of the analysis by introducing artifac...

Abstract Due to the complexity of substation systems and the diversity of data sources, potential inaccuracies or inconsistencies in data may compromise the accuracy of intelligent detection. To address this issue, an in...

"There is recent evidence that the core of the Internet, which was formerly dominated by large transit providers, has been reshaped after the transition to a multimedia-oriented network, first by general-purpose CDNs and...

This study is based on a comparative and contrastive analysis of a hetero-semiotic pair: Guy de Maupassant’s short story Boule de Suif and its graphic novel adaptation by Li-An, published by Delcourt in 2009. The centr...