Bertrand Russell is widely known for his willingness to change his philosophical mind. He is also now and again saddled with a reputation for carelessness about providing readers with clear and convincing explanations of his turnabouts. This chapter presents and briefly assesses the development of Russell's thinking about memory, emphasizing, against the grain of the received view, the continuity in his thought. Russell's ideas about memory are no exception to that perceived pattern of progress. The core notion of the early theory is that of acquaintance, by which Russell means a mode of cognition which is both immediate and purely receptive. The main ostensible problem for the theory is that of accounting for retention—specifically, making sense of the idea of being now acquainted with what has been and is no more. The abandonment of direct realism should predictably bring about a further increase in Russell's concern over fallibility and error in memory.

The wireless sensor networks (WSN) are gradually gaining attention because it is a key technology for the Internet of Things. For most of these networks, the data is usually collected in a manual way, by removing a memory unit or connecting the collector node to a personal computer. This is a constraint, because it demands the manipulation of the collector radio by the operator, which consists in a problem in practical applications. The main goal of this work is to present a non-invasive alternative way to collect the data by means of Bluetooth technology. The approach allows the development of hermetic devices, which is a desirable feature for practical deployment of the sensor nodes.

Buscando apresentar uma interpretação para EN I 4 1095a31-b13, este artigo defende que a digressão nela feita por Aristóteles pretende caracterizar a investigação recém iniciada como promissora, opondo-a, ainda que não explicitamente, ao modo rígido socrático-platônico de fazer Ética ou Política. Para tanto, propõe-se uma interpretação pouco usual do termo que (hoti) como o princípio buscado e não como ponto de partida da investigação. Recusa-se igualmente ver na passagem mencionada uma referência ao modo ou etapas de aquisição de virtude moral ou prudência (phronesis), mas de um corpo preciso de conhecimento ou ciência, a Ética ou Política.