Wireless sensor network is a collection of large number of low cost resource constraint sensor nodes that communicates using wireless medium. Sensor nodes are resource constrained in memory, sensing, communication capability, and battery power. Data communication between nodes consumes a large portion of the total energy consumption of the WSNs. One of the solutions to reduce number of bits tra...

The paper presents a study and an evaluation of a novel unsupervised segmentation technique based aggregation approach and some of possibility theory concepts. Firstly, the MPFCM (Modified Possibilistic Fuzzy C-Means) algorithm is used to extract information from each of MR images modalities. In second step, an obtained data are combined with an operator in order to exploiting the uncertainty a...

The application requirements and the spatial environments of wireless networks continue to become more and more complex and changeable. Most existing algorithms for wireless sensor networks are designed with a specific type of environment in mind. While such algorithms work well in the environment they have been designed for, once the environment changes beyond the domain in which the design ca...

.Due to limited resources of individual senor nodes, there is usually a trade-off between energy spending for packets transmissions and the appropriate level of reliability. Since link failures and packet losses are unavoidable, sensor networks may tolerate a certain level of reliability without significantly affecting packets delivery performance and data aggregation accuracy in favor of effic...

Data aggregation across time and space, and endogeneity of crime policies have rendered identification of Becker’s model of criminal behavior quite arduous. This paper uses unique data on the benefits of individual crimes, in particular, 5,000 Italian bank robberies, to identify deterrence. Bank robbers behave according to an instantaneous version of Becker’s model of crime: during bank robberi...

Wireless Sensor network (WSN) is an emerging technology and has great potential to be employed in critical situations. The development of wireless sensor networks was originally motivated by military applications like battlefield surveillance. However, Wireless Sensor Networks are also used in many areas such as Industrial, Civilian, Health, Habitat Monitoring, Environmental, Military, Home and...

1. UNCERTAINTY: ONE MUST FIGHT, BUT ONE CAN’T WIN 9 1.1. To recognize a situation 9 1.2 Predicting tomorrow 11 1.3 An expert and his cognitive activity 12 1.4 Statistics and quasi-statistics 13 2. FUZZY SETS COME TO THE AID 14 2.1 The Carrier 14 2.2 Fuzzy set 15 2.3 The Function of Belonging 15 2.4 The Linguistic Variable 15 2.5 Operations on fuzzy sub-sets 16 2.6 Fuzzy numbers and operations o...

In this paper we consider principles of such data aggregation in hierarchical networks of formal neurons which allows one to preserve the separability of the categories. The postulate of the categories separation in the layers of formal neurons is examined by means of the concept of clear and mixed dipoles. Dependence of separation of the categories on the feature selection is analysed.

Spoken conversation corpora often adapt existing Dialogue Act (DA) annotation specifications, such as DAMSL, DIT++, etc., to task specific needs, yielding incompatible annotations; thus, limiting corpora re-usability. Recently accepted ISO standard for DA annotation – Dialogue Act Markup Language (DiAML) – is designed as domain and application independent. Moreover, the clear separation of dial...

To be able to explore visually large amounts of movement data, it is necessary to apply methods for aggregation and summarization of the data. The goal of our research has been to systemize the possible approaches to aggregation of movement data into a framework clearly defining what kinds of exploratory tasks each approach is suitable for. On the basis of a formal model of movement of multiple...