L. Berruti, L. Caviglione, F. Davoli, M. Perrando, M. Polizzi, S. Vignola, S. Zappatore
From the LABNET server to Web Services and the Grid: The evolution of a telecommunication measurement distributed architecture

The paper describes the development and the evolution of a distributed instrumentation architecture, which has been applied to remotely access and control telecommunication measurement devices. Two different architectural choices, one of which based on Web Services and the Grid, are briefly compared, and their integration is discussed. A current implementation is described, which makes use of a hybrid solution for the repeated transfer of measurement data.

A. Salceanu, Oana Neacsu, V.David, E. Lunca
Measurements upon Human Body Capacitance: Theory and Experimental Setup

This paper proposes a method to estimate the value of the Human Body Capacitance, by direct measuring it, with an experimental setup based on 6517A model. More accurate and stable results are obtained when improving the setup with a Faraday cage. There is offered a pertinent and sustainable by practical results explanation for the reduced measured value of the bulk capacitance of the Human body considered as a fully isolated sphere.

Paolo Barsocchi, Antonio Blasco Bonito, Stefano Chessa
Localization in Open Fields by using RSSI on IEEE 802.15.4

Localization of mobile, wireless devices is a problem of great practical interest as it can be used to support wireless sensor networks and pervasive computing applications. The simplest methodology to provide localization information is based on the RSSI obtained from the communications of wireless devices. We consider RSSI on IEEE 802.15.4 radios and we present the results of a measurement campaign which show that the classic model (log-normal) used to model signal strength is not accurate enough. We thus propose a two-ray propagation model that better describe the path loss attenuation, not only for unobstructed outdoor environment but also for an environment with the presence of low-position obstacles.

G. Constantinescu, R.C. Ciobanu
Dielectric Relaxation Spectroscopy Of Polyethylene/Lignocellulosic Polymers Blends

Polymer blends of recycled high density poly(ethylene) (RPE) and wood flour (WF) have been prepared by using 3 types of compatibilizing agents. Dielectric relaxation spectroscopy measurements have been carried out by performing temperature sweeps at constant frequency and frequency sweeps at constant temperature. Incorporation of natural polymers and compatibilizing agent in the polyolefin matrix leads to an increase of conductivity and consequently of the dielectric loss values when comparing with those of matrix.

Marius Pislaru, Alexandru Trandabat, Marius Olariu
Neuro Fuzzy System For Industrial Processes Fault Diagnosis

In the last decade considerable research efforts have been spent to seek for systematic approaches to Fault Diagnosis (FD) in dynamical systems The problem of fault detection consists in detecting faults in a physical system by monitoring its inputs and outputs .Recently, the research has focused on non-linear systems FDI. Traditionally, the FD problem for non-linear dynamic systems has been approached in two steps. Firstly, the models linearized at an operating point, and then robust techniques are applied to generate residuals. This method only works well when the linearization does not cause a large mismatch between linear and non-linear models and the system operates close to the operating point specified. To deal with systems with high non-linearity and wide operation range, the FD problem has to be tackled directly using non-linear techniques. In the last decade considerable research efforts have been spent to seek for systematic approaches to Fault Diagnosis in dynamical systems.