This work presents a methodology that combines the use of artificial neural networks and fuzzy logic for alarm processing identification faulted components in electrical power systems. Fuzzy relations are established form database employed to train networks. The inputs patterns, while each output neuron is responsible estimating degree membership specific system component into class components. proposed method allows good interpretation results, even presence difficult corrupted patterns....

Straightforward, efficient, offline methods for dealing with suspicious power network branch parameters are proposed. State estimation (SE) is the natural tool tackling parameter problem. The proposed explore concept of irrelevant/barely relevant branches to eliminate/mitigate temporarily participation in SE process, until suspicions remedied. Strategies built handle different situations, such as occurrence single or multiple errors and redundancy reduction available measurements. Suspicious...

Two main characteristics of multi-label dataset are cardinality and density, related to the number labels (each instance of) a dataset. The relation between these learning performance has been observed with different datasets. However, difference in domain attributes also interfere on performance. In this work, we use real dataset, named Million Song Dataset, available internet, which presents property having too many associated their instances (songs), as well so instances. work present...

This work investigates the construction of fuzzy relations for alarm processing and fault location in electrical power systems. Several data aggregation classes are tested compared. Fuzzy established with aid knowledge on protection devices operation faults involving different system components. Tests performed a 7-bus test part real Brazilian system.

Goal: to propose a hybrid method, combining AHP and Fuzzy, for project portfolio management.
 Originality/value: this paper meets the positive characteristics of both methods, adequately weighing criteria contemplating process subjectivity. Limitations that exist in such as maximum number alternatives difficulty inserting new at end process, are overcome.
 Design/methodology/approach: is applied determining weights fuzzy used compare each criterion.
 Results: results show...

Intelligent transport support systems have had a major impact on people's urban mobility. In large centers, transportation services still need ways to optimize vehicle supply in certain areas, according the demand each of them. Optimized distribution on-demand taxi can be part an intelligent mobility plan, causing direct impacts traffic, improving accessibility, safety at standpoints by reduced waiting times, reduce fare etc. Many vehicle-mounted sensors currently generate real-time...

Network parameter errors may come from many different sources, such as: imprecise data provided by manufacturers, poor estimation of transmission line lengths, changes in the network design which are not adequately updated corresponding database, etc. used almost all power system analysis tools, real time monitoring to long term planning. Parameter contaminate obtained results and compromise decision making processes. This work proposes a methodology that combines genetic algorithms state...

Goal: Propose hybrid heuristics combining VNS and Tabu Search (TS) for adding adaptability to University Course Timetabling Problem (UCTTP) resolution.
 Design / Methodology Approach: TS metaheuristics were used isolated in combination order verify which shape acquired the best solutions. Those verified using constraints found at two undergraduate courses of Federal Fluminense University. Effectiveness is by comparing them with solutions manually elaborated course coordinators.
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Este artigo tem como objetivo apresentar o problema da evasão um desafio para a promoção democratização do ensino superior público. Numa visão histórica educação brasileira, pode-se verificar que sempre foi privilégio elite. Com de mudar essa situação, democratizando assim público todas as camadas sociais, Governo Lula criou programas expansão, Programa Expandir e REUNI. Porém, tais ainda são insuficientes, considerando total população brasileira possui graduação. A importância estudo...

This paper proposes efficient methods for correcting suspicious power system network parameters. State estimation is used tackling the parameter problem. The proposed explore concept of irrelevant/barely relevant branches to eliminate/mitigate temporarily participation parameters in state process, until suspicions are cleared up. Different situations, e.g. occurrence single/multiple errors under unavailability measurements, handled. distinguish themselves by construction a algorithm which...

A Previdência Social é uma política pública que visa garantir benefícios monetários aos trabalhadores e suas famílias em momentos de incapacidade laboral, velhice ou morte. Contudo, o notório aumento do desequilíbrio financeiro-atuarial dos institutos previdência pode impedi-los cumprir obrigações por falta recursos. Tendo vista os Regimes Próprios (RPPS) aplicam seu capital fundos investimento para elevar seus ativos financeiros, a busca ferramentas possibilitem análise seleção exibem bons...