Smart grids are a new trend in electric power distribution, which has been guiding the digitization of electric ecosystems. These smart networks are continually being introduced in order to improve the dependability (reliability, availability) and efficiency of power grid systems. However, smart grids are often complex, composed of heterogeneous components (intelligent automation systems, Information and Communication Technologies (ICT) control systems, power systems, smart metering systems, and others). Additionally, they are organized under a hierarchical topology infrastructure demanded by priority-based services, resulting in a costly modeling and evaluation of their dependability requirements. This work explores smart grid modeling as a graph in order to propose a methodology for dependability evaluation. The methodology is based on Fault Tree formalism, where the top event is generated automatically and encompasses the hierarchical infrastructure, redundant features, load priorities, and failure and repair distribution rates of all components of a smart grid. The methodology is suitable to be applied in early design stages, making possible to evaluate instantaneous and average measurements of reliability and availability, as well as to identify eventual critical regions and components of smart grid. The study of a specific use-case of low-voltage distribution network is used for validation purposes.
Objetivo: Descrever a atuação do profissional enfermeiro em pacientes com câncer de estômago atendidos no Hospital de Clínicas Dr. Alberto Lima. Metodologia: Trata-se de uma pesquisa de cunho descritivo, com abordagem quantitativa e qualitativa realizado no Hospital Dr. Alberto Lima, situado na capital de Macapá-AP, Brasil, em novembro de 2019. Utilizou-se um questionário sociodemográfico, estruturado com perguntas abertas e fechadas. Os dados foram organizados e tabulados por meio estatístico, utilizando a ferramenta da Microsoft à planilha Excel. Resultados: A amostra foi constituída por vinte e quatro participantes, sendo sete pacientes e dezessete enfermeiros. Os fatores: renda, escolaridade, idade e alimentação foram os mais relevantes na associação com a qualidade de vida. Conclusão: O enfermeiro desempenha papel importante junto ao paciente oncológico, pois é o enfermeiro quem o recebe e o avalia, realiza procedimentos e encaminha os problemas que não são de sua competência.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.