@article{
	11589_62707,
	author = { Fabbiano  L  and  Giaquinto  N  and  Savino  M  and  Vacca  G },
	title = {On the worst case uncertainty and its evaluation},
	year = {2016},
	journal = {JOURNAL OF INSTRUMENTATION},
	volume = {11},
	abstract = {The paper is a review on the worst case uncertainty (WCU) concept, neglected in the Guide to the Expression of Uncertainty in Measurements (GUM), but necessary for a correct uncertainty assessment in a number of practical cases involving distribution with compact support. First, it is highlighted that the knowledge of the WCU is necessary to choose a sensible coverage factor, associated to a sensible coverage probability: the Maximum Acceptable Coverage Factor (MACF) is introduced as a convenient index to guide this choice. Second, propagation rules for the worst-case uncertainty are provided in matrix and scalar form. It is highlighted that when WCU propagation cannot be computed, the Monte Carlo approach is the only way to obtain a correct expanded uncertainty assessment, in contrast to what can be inferred from the GUM. Third, examples of applications of the formulae to ordinary instruments and measurements are given. Also an example taken from the GUM is discussed, underlining some inconsistencies in it.},
	keywords = {Analysis and statistical methods; Simulation methods and programs},
	doi = {10.1088/1748-0221/11/02/P02001},	
	pages = {P02001--P02001}
}
@article{
	11589_7865,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {How to directly measure the mean flow velocity in square cross-section pipes},
	year = {2016},
	journal = {FLOW MEASUREMENT AND INSTRUMENTATION},
	volume = {49},
	abstract = {The main purpose of the paper is to provide a simplified measuring procedure for evaluating the fluid flow rate in square cross section pipes. This procedure consists in directly measuring the flow
(mean) velocity at a fixed location in the section. To this aim, an extension of the methodology utilized for circular section pipes is here proposed. The method simplifies and improves the procedure suggested by
the technical standard EN 12599. It has been possible to locate a specific position in the cross section where to measure the mean flow velocity in order to evaluate the flow rate. Here, it is shown that the
proposed methodology allows the estimation of the flow rate with higher accuracy than the normed one does, estimating errors less than those accepted in common practice. The effectiveness of the proposed method has
been proved by means of a series of experimental tests performed in a wind tunnel, using a Laser Doppler Anemometer (LDA) in order to measure the punctual velocities in the test cross-section of the tunnel in order to reconstruct the velocity profiles useful to determine the fluid flow rate.},
	keywords = {flow rate measurement; squared section pipe; laser-doppler anemometry},
	doi = {10.1016/j.flowmeasinst.2016.03.001},	
	pages = {1--7}
}
@article{
	11589_6862,
	author = { Dinardo G  and  Vacca G },
	title = {Fiber Bragg Grating Demodulation through Innovative numerical Procedures},
	year = {2016},
	journal = {INTERNATIONAL JOURNAL OF OPTOMECHATRONICS},
	volume = {10},
	abstract = {The aim of this article is to introduce an innovative algorithm for the calculation of the shift of the maximum reflectivity wavelength of a Fiber Bragg Grating experiencing an applied strain. An accurate and precise evaluation of the FBG spectrum displacement is crucial for determining the amount of the physical quantity inducing such perturbations. The proposed method is based on the Fast Fourier Transform based Cross Correlation function. Such method is compared to Least Squares Fitting (LSF) and the centroid algorithms, pointing out remarkable improvements in accuracy, precision, and time consumption performance. In addition, a further improvement of the proposed algorithm is introduced. It consists in an iteratively performed Cross Correlation algorithm. It has been proved that such improvement leads to estimations characterized by better accuracy and precision, thanks also to a considerable reduction of the peak-locking effect due to the FBG spectral resolution.},
	keywords = {Fiber Optics; Signal Processing Algorithms; Cross Correlation},
	doi = {10.1080/15599612.2016.1149895},	
	pages = {40--52}
}
@conference{
	11589_73934,
	author = { Dinardo  Giuseppe  and  Fabbiano  Laura  and  Vacca  Gaetano },
	title = {Energy-based indexes for analysis of vibrations from rotating machinery based on the Hilbert-Huang transform},
	year = {2016},
	publisher = {Enrico Primo Tomasini},
	address = {Ancona, Italy},
	volume = {AIP Conf. Proc. 1740, 060004 (2016); http://dx.doi.org/10.1063/1.4952676},
	booktitle = {PROCEEDINGS OF THE 12TH INTERNATIONAL A.I.VE.LA. CONFERENCE ON VIBRATION MEASUREMENTS BY LASER AND NONCONTACT TECHNIQUES: ADVANCES AND APPLICATIONS},
	abstract = {The aim of the paper is to introduce a parameter indicating a possible progressive deterioration of rotating machinery affected by any dynamic misalignment (due to increasing eccentricities, uneven mass distribution, propagating cracks, etc.). Such parameter, which has to be considered as a damage index, is based on a series of post-processing algorithms to be implemented on the vibration signals acquired on static supporting elements. The vibrations acquired from rotating machinery could be influenced by non-stationary and non-linear features, especially when the rotating elements are affected by dynamical unbalances due to misalignments or uneven mass distribution. The authors use the Hibert-Huang Transform tool, that is able to decompose the original signal into Intrinsic Mode Functions (IMFs), each of them holding quite significant information about the instantaneous frequencies and the energy content of the original signal.},
	keywords = {Energy content, Nonlinear dynamics, Vibration rotation analysis},
	doi = {10.1063/1.4952676},	
}
@conference{
	11589_20367,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {AN INNOVATIVE ALGORITHM FOR FIBER BRAGG GRATING SENSORS
INTERROGATION},
	year = {2015},
	publisher = {Assoc. Prof. Jan Holub},
	address = {Prague, Czech Republic},
	booktitle = {Proceedings of XXI IMEKO World Congress ”Measurement in Research and Industry”},
	abstract = {The aim of the paper is to introduce an innovative algorithm able to determine the shift of the Bragg
wavelength of a Fiber Bragg Grating (FBG) as it experiences a perturbation due to an applied strain. An accurate and precise evaluation of the FBG spectrum displacement is
crucial for determining the amount of strain inducing such perturbations. The proposed method, very fast and simple to implement, is compared with the usually employed FBG demodulation techniques.},
	keywords = {Fiber Bragg Gratings; Discrete Fourier Transform; Monte Carlo Methods},
	pages = {1587--1590}
}
@article{
	11589_6115,
	author = { Campagna M  M  and  Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {Fluid Flow Measurements by means of Vibrations Monitoring},
	year = {2015},
	journal = {MEASUREMENT SCIENCE & TECHNOLOGY},
	abstract = {In this paper the authors assess and analyze the dependence existing between the fluid flow rate in a pipe (in turbulent condition) and the vibration am- plitude induced on the pipe by the flow. The experimental tests performed showed this relation to be linear. In addition, the influence of the pipe phys- ical properties (in terms of material and inner diameter) on the relation fluid flow rate versus vibrational acceleration amplitude of the pipe have been ascertained by means of several experimental tests.},
	keywords = {flow rate measurement; pipe wall vibration; Fourier analysis},
	doi = {10.1088/0957-0233/26/11/115306},	
}
@conference{
	11589_61040,
	author = { Dinardo  Giuseppe  and  Fabbiano  Laura  and  Vacca  Gaetano },
	title = {Proposal of Innovative Leak Sensing Systems for Water Distribution Networks},
	year = {2015},
	booktitle = {Proceedings of the 2015 Ninth International Conference on Sensing Technology},
	abstract = {This paper describes two innovative, simple and low
cost sensing systems to detect possible leaks in a pressurized fluid
distribution network, such as an urban aqueduct. Both techniques
may use micro-sensors (MEMS) of different nature, the first one
sensing vibrations, the second one sensing pressures. The first
technique bases its principle on the comparison of vibration signals
acquired at the terminals of arbitrary long but continuous pipe
under test. Differences in the amplitudes, at the same
characteristic frequency, of the acquired signals would indicate
leaks of fluid at some location between the sensors. The leading
idea comes out from the linear relationship existing between the
radial acceleration amplitude transmitted by the (turbulent) flow
to the pipe walls and its flow rate. The second methodology
principle is based instead on the measurement of the fluid pressure
gradients acquirable in correspondence of two suitable consecutive
elbows present along a continuous pipe, because of its functional
dependence on the flow rate through it. In addition, in this case, a
difference in the detected pressure signals would indicate a leakage
between the elbows. Both methods involve the use of wireless
MEMS, accelerometers or pressure transducers respectively, to
drastically reduce the cost of the monitoring and inspections of
great fluid distribution networks, in particular, with respect to
traditional technologies. The goal of the proposed methodologies is
also to significantly decrease the inspection times that are typically
required by traditional leak detection methods, especially for large
networks. Applications are easily expected as well in industry.},
	keywords = {Leak detection; mems; vibration/pressure measurement; flow rate; pipe network},
	pages = {269--273}
}
@conference{
	11589_18424,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {Study of More Efficient Vibration Signal Processing Techniques for Anomalies Detection},
	year = {2015},
	publisher = {S.C. Mukhopadhyay, O. Postalache, K. P. Jayasundera and A. Swain},
	address = {AUCKLAND},
	booktitle = {proceedings of 9th International Conference on Sensing Technology},
	abstract = {The proposed research is aimed to study the most suitable method for a clearer interpretation and estimation of transient phenomena detectable in vibration signals of rotating machinery, when characterized by anomalies. The signals, which are going to be considered here, pertain industrial applications (i.e., machinery and turbo-machinery monitored status and usury). The paper explores the application of time-frequency based analysis techniques for the detection and feature extraction from the change of vibration signals caused by common machinery faults. The purpose here is to provide a more suitable criterion to detect anomalies, through the analysis of vibrational signals, on the basis of the kind of information from the signal itself.},
	keywords = {Fault diagnosis for mechanical components; Wavelet Transform; Fast Fourier Transform},
	pages = {286--291}
}
@article{
	11589_2662,
	author = { De Capua C  and  Fabbiano L  and  Morello R  and  Vacca G },
	title = {Optimized Procedure to Evaluate the Thermal Energy Transfer 
in Hemodialysis Treatment},
	year = {2014},
	journal = {INSTRUMENTATION SCIENCE & TECHNOLOGY},
	abstract = {Hemodialysis treatment is biased by some complications during its operative phases. One of these potential accidents consists in intradialytic hypotension, that certainly causes discomfort to the patient but may even increase death risk. Therefore, it is very suitable, for reasons of prevention, predicting such events in the clinical routine procedures. As a cause of hypotension occurrence might be found in thermal energy/heat exchanges between extracorporeal system and the surrounding environment because of the operating temperatures during the clinical therapy. In the present work, a model for evaluating such heat losses is proposed and improved in order to maintain constant patient’s blood temperature as much as possible. By means of a deep investigation on these issues, the authors have defined a convenient procedure to improve and optimize the clinical treatment process. Differently from most of the hemodialysis machines used nowadays which control automatically the dialysate solution temperature starting from peripheral body temperature measurements, the proposed method is based on the control of only two important parameters: i) the pre-dialysis core temperature of the patient, and ii) the temperature of the blood entering the artery from the extracorporeal circuit after the treatment in the dialyzer. Measurements of arterial and venous blood temperatures are obtained in a non-invasive way by means of a suitable estimation of thermal energy exchanges between the blood and the environment during the extracorporeal recirculation. The suggested model guarantees a constant core temperature of the patient, improving prevention from intradialytic hypotension.},
	keywords = {Hemodialysis; thermal energy exchange; characteristic temperatures estimation; hypotension},
	doi = {10.1080/10739149.2013.876546},	
}
@article{
	11589_8049,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {How Geometric Misalignments can affect the Accuracy of Measurements by a Novel Configuration of Self-Tracking LDV},
	year = {2014},
	journal = {ACTA IMEKO},
	abstract = {Aim of the paper is to evaluate the reliability of a novel configuration of a Laser Doppler Vibrometer (LDV) for the measurement of vibrations affecting rotating components of machines. In the paper an analysis of errors due to the possible static misalignments of the mirrors utilized in an experimental apparatus has been carried out. This instrument was set up for the estimation of the out of plane vibrations of moving (rotating) objects, in order to give a better characterization of the self-tracking technique employed with the use of a 1D single point LDV and its measurements. The accuracies of the measures are mostly linked to the interaction between environment and instrumentation.},
	keywords = {self-tracking LDV; accuracy analysis ; geometric misalignment ; vibration of rotating object}
}
@article{
	11589_8104,
	author = { De Capua C  and  Fabbiano L  and  Lipari G  and  Morello R  and  Vacca G },
	title = {A web service based mobile application for detecting Kayser-Fleischer ring in eye cornea},
	year = {2014},
	journal = {INSTRUMENTATION SCIENCE & TECHNOLOGY},
	volume = {42},
	abstract = {Kayser-Fleischer ring is a visible golden-brown, sometimes orange or greyish, pigmentation in the cornea. This is a common symptom of a rare genetic disorder known as Wilson Disease. This pathology is cause of a malfunction in the copper excretion from the organism. Copper accumulates in tissues and consequently is responsible of oxidative processes in the organs affected. Kayser-Fleischer ring is direct consequence of the copper deposit in the cornea. It is considered a basic diagnostic sign of Wilson disease more than ever in individuals with neurological disorders due to copper accumulation in brain. However, few ophthalmologists are experienced in identifying Kayser-Fleischer ring.
In the manuscript, a mobile application (app) is proposed to detect automatically the Kayser-Fleischer ring. The smartphone takes a photograph of patient’s eye and sends it to a web-service. The latter performs the image processing by using a segmentation algorithm. Once that Kayser-Fleischer ring has been detected, biometric measurements provide the percentage extent of the corneal region affected by the symptom. This parameter allows the system to get information on the severity of the oxidative process such as an indirect measure of the pathology stage. Subsequently, further medical examinations support the physician to diagnose the Wilson disease. The proposed diagnostic measurement system is non-invasive and fully automated.
At the moment the detection of the Kayser-Fleischer ring is made by ophthalmologist with a visual examination. However the symptom is not always recognised. Therefore interpretation errors and false-negative diagnoses are possible. In this sight, the proposed diagnostic tool could improve accuracy of actual methods used in practice and resolve the physician suspicion about the pathology occurrence.},
	url = {http://www.tandfonline.com/doi/abs/10.1080/10739149.2013.841190#.UlUwFoacdng},
	doi = {10.1080/10739149.2013.841190},	
	pages = {95--108}
}
@conference{
	11589_25060,
	author = { L  Fabbiano  and  N  Giaquinto  and  M  Savino  and  Vacca G },
	title = {PERCHÉ LA GUM DOVREBBE INCLUDERE L’ANALISI DELL’INCERTEZZA DI CASO PEGGIORE},
	year = {2014},
	booktitle = {Atti del XXXI Congresso Nazionale GMEE}
}
@conference{
	11589_18198,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {Proposal of a Simpler Procedure for Flow Rate
Estimation in Square Cross Section Ducts},
	year = {2014},
	publisher = {UUniversitas Studiorum S.r.l.},
	address = {Ancona},
	booktitle = {Proceedings of IX Congress
NATIONAL GROUP
OF MECHANICAL
AND THERMAL
MEASUREMENTS},
	abstract = {Focus of the present work is the evaluation of the
air flow rate in a pipe of squared cross section
through the direct measurement of the mean
velocity at a fixed location of the section. To this
aim, an extension of the methodology already
utilized for circular section pipes is here
proposed. The method simplifies and improves the
procedure suggested by the technical standard EN
12599. Specifically, it has been possible to state a
geometrical position in the cross section where to
straight measure the mean flow velocity in order
to evaluate the flow rate. Here, it is shown that
the proposed methodology allows the estimation
of the flow rate with higher accuracy than the
normed one does, estimating errors less than
those accepted in common practice.},
	keywords = {flow rate estimation; square cross section pipes; flow rate velocity measurement}
}
@conference{
	11589_18396,
	author = { Fortunato B  and  Lippolis A  and  Vacca G  and  Amirante  R  and  Camporeale S M  and  Dambrosio  and  Oresta P  and  Torresi M  and  Fornarelli F },
	title = {Activities of the research group on  energy efficiency and renewable energy},
	year = {2014},
	publisher = {Gangemi},
	address = {ROMA},
	volume = {B},
	booktitle = {Groups mResearch on KERTS and SCS -
1st Workshop on the State of the Art and Challenges of Research Efforts of POLIBA},
	keywords = {Energy ; Renewable; Efficiency},
	pages = {173--177}
}
@conference{
	11589_16368,
	author = { N  Giaquinto  and  L  Fabbiano  and  A  Trotta  and  G  Vacca },
	title = {About the Frequentist and the Bayesian Approach to Uncertainty},
	year = {2014},
	booktitle = {Proceedings of 20th IMEKO TC4 International Symposium},
	abstract = {There are two well-known and different
approaches to statistical inference and hypothesis
testing, i.e. the frequentist (or orthodox) and the
Bayesian one. Consequently, there are also (if one
stays in the framework of probability theory) two
rival approaches to uncertainty. The present work is
partly a tutorial, aimed at explaining the basic
aspects of the two approaches, and their relationship
with the GUM; and partly a demonstration that the
implementation of the Bayesian approach in the GUM
Supplement 1 is too rigid. In particular, objective
Bayesianism is incompatible with the propagation of
distributions prescribed in Supplement 1.},
	keywords = {uncertainty estimation; Bayesian approach; frequentist approach},
	pages = {714--719}
}
@conference{
	11589_19122,
	author = { Dinardo G  and  Vacca G },
	title = {Cross Correlation Method Enhancement for FBG
Demodulation},
	year = {2014},
	publisher = {Universitas Studiorum S.r.l.},
	address = {Ancona},
	booktitle = {Proceedings of IX Congress
NATIONAL GROUP
OF MECHANICAL
AND THERMAL
MEASUREMENTS},
	abstract = {The purpose of the paper is to provide an analysis
of the attitude exhibited by demodulation
algorithms of Fiber Bragg Gratings (FBG) based
on Cross Correlation methods. The Cross
Correlation technique here considered is based
on calculations performed in spectral domain. Its
behavior against the peak-locking phenomenon
has been analyzed and a way for attenuating it
has been devised. The new Iterative Cross
Correlation algorithm improves the FBG
demodulation accuracy and precision, giving
remarkably attenuated peak-locking amplitude.},
	keywords = {FBG demodulation; iterative Cross Correlation; signals processing}
}
@article{
	11589_818,
	author = { Dinardo G  and  Fabbiano L  and  Vacca G },
	title = {Condotte a sezione quadrata: una nuova e più
semplice procedura per la misura della portata
volumetrica},
	year = {2014},
	journal = {TUTTO MISURE},
	volume = {4},
	keywords = {misura di portata volumetrica; condotte a sezione quadrata; anemometria laser-doppler},
	pages = {287--290}
}
@inbook{
	11589_52440,
	author = { R  Morello  and  C  De Capua  and  L  Fabbiano  and  Vacca G },
	title = {UN MODELLO DI SCAMBIO TERMICO PER LA PREVENZIONE DI EPISODI DI IPOTENSIONE DURANTE L’EMODIALISI},
	year = {2013},
	booktitle = {Atti XXX Congresso Nazionale GMEE}
}
@conference{
	11589_25061,
	author = { R  Morello  and  C  De Capua  and  L  Fabbiano  and  Vacca G },
	title = {UN ALGORITMO DI ELABORAZIONE IMMAGINI PERL’INDIVIDUAZIONE DELL’ANELLO DI KAYSER-FLEISCHER IN PAZIENTI CON MALATTIA DI WILSON},
	year = {2013},
	booktitle = {Atti XXX Congresso Nazionale GMEE}
}
@article{
	11589_1481,
	author = { Fabbiano L  and  Vacca G  and  Morello R  and  and De Capua C },
	title = {An Innovative Strategy for Correctly Interpreting Simultaneous Acquisition of EEG Signals and FMRI Images},
	year = {2013},
	journal = {IEEE SENSORS JOURNAL},
	abstract = {The cognitive event-related measurements of the human brain are performed by measuring electrical signals and electromagnetic fields (electroencephalography, EEG, and magnetoencephalography, MEG) and hemodynamic responses (measured by fMRI and PET). The EEG and MEG reflect synchronized electrical activity of neurons, and then show the same timescale as neurocognitive processes. The fMRI is related to the power consumption of groups of neurons and registers a signal on a timescale of several seconds. Unlike fMRI, MEG and EEG are not imaging methods. It is opinion of the authors that the combination of MEG or EEG with the fMRI therefore would be very useful to reach a high resolution, both in time and space, of brain functions. It is not assured however that all measured events during an EEG acquisition and cognitive process-related produce measurable changes of the BOLD signal – and vice versa. 
In this paper, a new strategy of combining signals (electric and hemodynamic responses) simultaneously acquired from different clinical methodologies is performed and tested in order to produce more reliable information about brain activity. Two different algorithms are explored and compared via repeatability standard deviation estimations of fMRI images.},
	keywords = {biomedical measurements;  ICA algorithms;  neuroelectric signals},
	doi = {10.1109/JSEN.2013.2261294},	
}