Intrusion detection datasets play a key role in fine tuning Intrusion Detection Systems (IDSs). Using such datasets one can distinguish between regular and anomalous behavior of agiven node in the network. To build this dataset is not straightforward, though, as only the most significant features of the collected data for detecting the node's behavior should be considered. We propose in this paper a technique for selecting relevant features out of KDD99 using a hybrid approach toward an optimal subset of features. Unlike existing work that only detect attack or no attack conditions, our approach efficiently identifies which sort of attack each register in the dataset refers to. The evaluation results show that the optimized subset of features can improve performance of typical IDSs.
Several countries have invested in technologies forSmart Grids. Among such protocols designed cover this area, highlights the DNP3 (Distributed Network Protocol version 3). Although the DNP3 be developed for operation over the serial interface, there is a trend in the literature to the use of other interfaces. The Zigbee wireless interface has become more popular in the industrial applications. In order to study the challenges of integrating of these two protocols, this article is presented the analysis of DNP3 protocol stack through state machines The encapsulation of DNP3 messages in P2P (point-topoint) ZigBee Network, may assist in the discovery and solution of failures of availability and security of this integration. The ultimate goal is to merge the features of DNP3 and Zigbee stacks, and display a solution that provides the benefits of wireless environment, without impairment of security required for Smart Grid applications.
AbstractThe Smart Grid concept establishes that, in addition to power flow, the utility has a two-way data flow in all sectors of the grid including the consumers facilities. By the system data monitoring, the failure control can be accomplished with greater speed and efficiency. To achieve such a speed, rendering Smart Grid applications viable, the requirements of safety, reliability and low latency of data flow are essential. Considering a high latency communication between the control center to the last mile applications, the control and synchronization of the Smart Meter devices should not be reliable only for administrator hands, allowing be realized automatically. So, palliative actions, taken in an independent way by the network, may reduce the need for human intervention in the management. This article presents the Distributed Network Protocol version 3 commands modeling for synchronization management between Smart Meters, with aim to help the link latency monitoring. The modeling was performed in VHDL language and considered a point-to-point wireless IEEE 802.15.4 network.Keywords Smart Grid, DNP3, Modeling, VHDL, Synchronization.Resumo O conceito Smart Grid estabelece que, em adição ao fluxo de energia, a concessionária tenha um fluxo de dados de duas vias em todos os setores da rede até os consumidores. Através do monitoramento do sistema de dados, o controle a falhas pode ser realizado com maior agilidade e eficiência. Para garantir essa velocidade e tornar as aplicações Smart Grid viáveis, requisitos como segurança, confiabilidade e baixa latência são essenciais. Considerando uma comunicação de alta latência entre a central de controle até as aplicações de última milha, o controle e sincronização dos dispositivos de medição inteligente não devem depender apenas dos administradores da rede, podendo ser realizados automaticamente. Sendo assim, as ações paliativas tomadas de forma independente na rede, poderão diminuir a necessidade de intervenção humana na gestão. Este artigo apresenta a modelagem de comandos do Distributed Network Protocol version 3 de gerenciamento de sincronização entre Smart Meters, como forma de auxílio autônomo no monitoramento e gestão de latência dos enlaces. A modelagem foi realizada pela linguagem VHDL e considerou um enlace sem fio ponto-a-ponto IEEE 802.15.4.Palavras-chave Smart Grid, DNP3, Modelagem Computacional, VHDL, Sincronização.
As instituições de ensino têm importantes documentos que norteiam seus objetivos e suas ações. Documentos estes que devem estar consoantes com a legislação, mas, mais do que isso, devem expressar seus princípios e suas diretrizes, além de servir de guia e orientação para os estudantes, professores e técnicos. Este trabalho objetivou identificar e comparar as concepções de currículo e avaliação presentes nos documentos institucionais do IFMT, sendo eles o Plano Pedagógico Institucional (PPI) e a Organização Didática (OD). Foi usada uma abordagem qualitativa, por meio de pesquisa bibliográfica, análise documental, com características descritivas, interpretativas e comparativas. Conclui-se que entre os documentos há conformações, principalmente no que se refere aos conceitos utilizados nos dois documentos. Porém ao analisar a OD, que é um documento regulador, percebe-se que a mesma apresenta imperativos que direcionam as estratégias de avaliação que confrontam radicalmente com as diretrizes da educação integrada expressa no PPI. Há diversos aspectos em que se observa contradições entre as diretrizes propostas para a avaliação da aprendizagem pelo PPI e a regulamentação da aplicação desta avaliação. Havendo assim necessidade de revisão, por parte da instituição, da regulamentação que ordena a avaliação do processo de ensino aprendizagem para que os documentos institucionais caminhem na mesma direção, que é do êxito no processo de ensino aprendizagem. Palavras-chave: Projeto Pedagógico Institucional. Organização Didática. Diretrizes Pedagógicas. AbstractEducational institutions have important documents that guide their objectives and actions. These documents should be in accordance with the legislation, but more than that, should express its principles and guidelines, and serve as a guide and guidance for students, teachers and technicians. This work aimed to identify and compare the concepts of curriculum and assessment present in IFMT institutional documents, namely the Institutional Pedagogical Plan (PPI) and the Didactic Organization (OD). A qualitative approach was used, through bibliographic research, document analysis, with descriptive, interpretative and comparative characteristics. It is concluded that among the documents there are conformations, mainly regarding the concepts used in both documents. However, when analyzing OD, which is a regulatory document, it can be seen that it has imperatives that direct evaluation strategies that radically confront the integrated education guidelines expressed in the PPI. There are several aspects in which there are contradictions between the proposed guidelines for the assessment of learning by the PPI and the regulation of the application of this assessment. Thus, there is a need for the institution to revise the regulations that mandate the assessment of the teaching-learning process so that the institutional documents move in the same direction, which is the success in the teaching-learning process. Keyword: Institutional Pedagogical Project. Didactic Organization. Pedagogical Guidelines.
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