In 1962, five leading Dutch process industries (BPM now Shell, Algemene Kunstzijde Unie now AKZO, DSM, Hoogovens now Corus and Unilever) got together to explore combining tests and sharing the results on process instrumentation. Companies were at the time carrying out these activities individually at very high costs. The five concluded that sharing instrument evaluation reports, even with direct competitors, would be to the benefit of all.
A follow-up meeting held on the 16th December 1963 resulted in the formation of a co -operation panel under the Dutch name "Werkgroup voor Instrument Beoordeling", shortened to WIB. An independent laboratory, the Institute for Applied Physical Research -TNO, was approached and asked to carry out testing on behalf of WIB. TNO was also made responsible for the administration of the association, supervised by a Board of WIB members.
WIB activities attracted high interest from companies abroad wanting to join and a few years later the official language became English. WIB was translated into "Working-party on Instrument Behaviour". It was officially registered as a non- profit association in 1968.

The paper deals with the LTI/LTV power system models and their experimental verification. The frequency dependent system impedance is used for power system harmonics studies. As a voltage/current power system transfer function it explains well harmonics related phenomena observable in real systems. With very accurate impedance measurements power system nonlinearity can be observed. The nonlinearity manifest as system time-variance for which LTV (linear time varying) model can be used. New model improves power system description. The problems of such the model identification and verification are discussed in the paper.

A two-phase generator board has been investigated as a mean to perform precision tests on the ADCs of measurement system for wideband distorted power measurement. To overcome the limitation of the commercial generator in the lower frequency band, a design modification has been introduced. Verification of the characteristics of the generator shows the possibility of operation for in the low frequency range and the a phase shift is contained within 10 mrad up to 2 MHz. A characterization in terms of spectral purity and voltage stability of single tone synthesized are reported.

This study addresses preliminary results about the seasonal wind variability, especially during the winter season, in South Italy. Wind climate for the coastal waters off South Italy was estimated based on images of the Advanced Synthetic Aperture Radar (ASAR) onboard the ENVISAT satellite during the period from March 2002 to April 2012.

The design of wind turbines evolved over time, with the scope of becoming less expensive and producing energy more efficiently. This paper deals with a FEM model for the representation of vertical axis wind turbine (VAWT) functioning for diagnostic and monitoring studies, which can provide fundamental data that can optimize the design of the monitoring system and an improvements in fault diagnosis related to vibration effects. In particular in this paper will discuss a monodimensional VAWT model, in order to reduce the computational time and, at the same, by using low computational resources to analyze several load cases. Growing usage of wind turbines has made maintenance a priority, and diagnosing potential faults is crucial to maintaining the turbine's desired availability. The simulation data obtained by the proposed approach allows to optimize condition monitoring and fault diagnostic techniques by the analysis of the wind turbine behavior before the real use on the field with both time and costs reduction.