The Maximum Entropy probability density function associated with the testable information on the range and the first and second order moments of the random quantity of interest is derived. The validity of such approach is experimentally demonstrated through comparison between the proposed maximum entropy distribution and the U-shaped distribution. The underlying physical assumptions which must be satisfied for the proper use of the U-shaped distribution are revisited in the context of wide-band applications, such as Electromagnetic Compatibility measurements.

A key role of metrology in the realization of the concept of sustainable development of the regions and countries of the world, is underlined. In particular, are those developing regions/countries and those in the process of an economical transformation in their economic systems. The most important influence of the measurement process validation in all kinds of conformity assessment systems, is explained. The need for the creation of regional metrological centres and information systems to aid the measurement process validation for different testing and calibration laboratories, are pointed out. The research project which carries out designing and developing of the information systems, namely: Computer Aided Measurement Process Validation – CAMPV, is presented. This system can be used by regional metrological centres.

This paper presents a design of a future Web based measurement laboratory, by applying new architectural approach considering the state of art of advanced technology as well as the strategy for the future business perspective. Such approach also provides a lot of solutions and applications under the real conditions covering different areas of industrial research, operational analysis and system research methods. The paper discusses the results of preliminary testing using Appreciative Inquiry methodology, that are the basis for conceiving, designing and preparing marketing aspects of an e-laboratories and m-laboratories, considering its cost-effectiveness and multifunctionality of the applied model for a wide range of users. The result of this new approach will completely optimize current "e" and "m" laboratory solutions. Management through business perspective is not only technical development, it also includes educational, humanitarian, and commercial aspects.

Considering the classic HBM, for the associated human body capacitance (HBC) is generally accepted the value of 100 pF. Developing a method based on the charge preservation and using the Model 6517A as electrometer, we measured for HBC values spread between 50 and 500 pF. This quasi-large dispersion encouraged us to emit and to experimentally verify assumptions regarding the effective values of the HBC, according to different states, circumstances and accepted models. There is good accordance between measured and expected data. One conclusion might be that the classic HBM is rather a conventional and traditional testing standard than a real world universal circuit.

Large scale monitoring of power quality in electrical apparatuses is nowadays a pressing need due to the liberalization of electrical market and the deeper interconnections of electrical networks. Many instruments are today available on the market. Even if they grant good accuracy and measurement capability, they are generally developed for single point measurements. Their use in large scale monitoring leads to high costs. These costs are also due to the accurate processing tasks they shall realize. In this framework research activity, the authors aim at the realization of a measurement instrument for power quality monitoring in compliance with IEC 61000-4-30 and 61000-4-7 standards capable of granting good accuracy, satisfying repeatability, and cost effectiveness since the use in large scale monitoring is allowed. In this paper the attention is paid to the measurement algorithm to be adopted. The use of alternative measurement approach respect to the FFT one is proposed. Digital filters tuned on the single spectral line, and digital filters shaped on the harmonic group are optimized thoroughly for grouping measurements required by IEC EN 61000-4-7 standard. The obtained results allowing promising development in the use of this approach.