Competition between local potentials and attractive particle-particle interactions in superlattices

Naturally occuring or man-made systems displaying periodic spatial modulations of their properties on a nanoscale constitute superlattices. Such modulated structures are important both as prototypes of simple nanotechnological devices and as particular examples of emerging spatial inhomogeneity in interacting many-electron systems. Here we investigate the effect different types of modulation of the system parameters have on the ground-state energy and the charge-density distribution of the system. The superlattices are described by the inhomogeneous attractive Hubbard model, and the calculations are performed by density-functional and density-matrix renormalization group techniques. We find that modulations in local electric potentials are much more effective in shaping the system's properties than modulations in the attractive on-site interaction. This is the same conclusions we previously (Phys. Rev. B 71, 125130) obtained for repulsive interactions, suggesting that it is not an artifact of a specific state, but a general property of modulated structures.Comment: 8 pages, 2 figure

Dual effects of Rho-kinase inhibitors on a rat model of inflammatory pain

BACKGROUND: Rho-kinases (ROCKs), a family of small GTP-dependent enzymes, are involved in a range of pain models, and their inhibition typically leads to antinociceptive effects

Articles with short titles describing the results are cited more often

OBJECTIVE: The aim of this study was to evaluate some features of article titles from open access journals and to assess the possible impact of these titles on predicting the number of article views and citations. METHODS: Research articles (n = 423, published in October 2008) from all Public Library of Science (PLoS) journals and from 12 Biomed Central (BMC) journals were evaluated. Publication metrics (views and citations) were analyzed in December 2011. The titles were classified according to their contents, namely methods-describing titles and results-describing titles. The number of title characters, title typology, the use of a question mark, reference to a specific geographical region, and the use of a colon or a hyphen separating different ideas within a sentence were analyzed to identify predictors of views and citations. A logistic regression model was used to identify independent title characteristics that could predict citation rates. RESULTS: Short-titled articles had higher viewing and citation rates than those with longer titles. Titles containing a question mark, containing a reference to a specific geographical region, and that used a colon or a hyphen were associated with a lower number of citations. Articles with results-describing titles were cited more often than those with methods-describing titles. After multivariate analysis, only a low number of characters and title typology remained as predictors of the number of citations. CONCLUSIONS: Some features of article titles can help predict the number of article views and citation counts. Short titles presenting results or conclusions were independently associated with higher citation counts. The findings presented here could be used by authors, reviewers, and editors to maximize the impact of articles in the scientific community

Robotic process automation and artificial intelligence in industry 4.0 : a literature review

aking into account the technological evolution of the last decades and the proliferation of information systems in society, today we see the vast majority of services provided by companies and institutions as digital services. Industry 4.0 is the fourth industrial revolution where technologies and automation are asserting themselves as major changes. Robotic Process Automation (RPA) has numerous advantages in terms of automating organizational and business processes. Allied to these advantages, the complementary use of Artificial Intelligence (AI) algorithms and techniques allows to improve the accuracy and execution of RPA processes in the extraction of information, in the recognition, classification, forecasting and optimization of processes. In this context, this paper aims to present a study of the RPA tools associated with AI that can contribute to the improvement of the organizational processes associated with Industry 4.0. It appears that the RPA tools enhance their functionality with the objectives of AI being extended with the use of Artificial Neural Network algorithms, Text Mining techniques and Natural Language Processing techniques for the extraction of information and consequent process of optimization and of forecasting scenarios in improving the operational and business processes of organizations.5311-8814-F0ED | Sara Maria da Cruz Maia de Oliveira PaivaN/

Reconhecer a paisagem na literatura : um convite a reconhecer-se no mundo

Orientador: Prof. Dr. Fábio de Carvalho MessaDissertação (mestrado) - Universidade Federal do Paraná, Setor Litoral, Programa de Pós-Graduação em Rede Nacional para Ensino das Ciências Ambientais. Defesa : Matinhos, 22/06/2023Inclui referências: p. 90-92Área de concentração: Ciências AmbientaisResumo: Neste texto, tomaremos como elemento chave a construção da concepção de paisagem dentro do campo da literatura, como tratada por Michel Collot, passando pela sua significação fenomenológica, baseada nos trabalhos de Merleau-Ponty e Bachelard em conjunto com as propostas de geógrafos sociais da linha humanista, como Tuan. Partindo da proposição de atividades relacionadas à Literatura, que oportunizem o diálogo sobre as relações entre o ser humano e a paisagem, pretende-se fortalecer laços identitários e de pertencimento a partir da análise e reflexão sobre a descrição da paisagem na obra Gigi: de volta ao passado, escrito por Jocelina Santana Bonatto, com base em seus espaços vividos e experienciados. A ação, a ser desenvolvida em uma turma de nono ano do Ensino Fundamental, baseia-se no método recepcional, desenvolvido por Aguiar e Bordini (1993), composto por cinco etapas: determinação do horizonte de expectativas, atendimento ao horizonte de expectativas, ruptura do horizonte de expectativas, questionamento do horizonte de expectativas e, por fim, a ampliação do horizonte de expectativas.Abstract: In this text, we will take as a key element the construction of the landscape conception within the field of literature, as treated by Michel Collot, passing through its phenomenological significance, based on the works of Merleau-Ponty and Bachelard together with the proposals of social geographers of the humanist, like Tuan. Starting from the proposition of activities related to Literature, which provide an opportunity for dialogue about the relationship between human beings and the landscape, it is intended to strengthen identity and belonging ties based on the analysis and reflection on the description of the landscape in the work Gigi: de volta ao passado, written by Jocelina Santana Bonatto, based on their lived and experienced spaces. The action, to be developed in a ninth grade class of Elementary School, is based on the reception method, developed by Aguiar and Bordini (1993), composed of five steps: determination of the horizon of expectations, meeting the horizon of expectations, rupture the horizon of expectations, questioning the horizon of expectations and, finally, the expansion of the horizon of expectations