16 research outputs found

    Italy’s latest legislation on accounting fraud highlights the country’s difficulty in pursuing real economic and political reform

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    Italy has a longstanding corruption problem which the Italian Prime Minister, Matteo Renzi, has pledged to address. Andrea Lorenzo Capussela and Vito Intini write on a recent piece of legislation introduced in June which alters the rules on accounting fraud. They argue that the legislation has opened up a significant loophole and is indicative of the Italian political system’s inability to produce meaningful political and economic reforms

    There is little evidence that the proposed reform of Italy’s labour market will actually generate growth or employment

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    The Italian government has outlined a number of policies aimed at reforming Italy’s labour market, with the proposals receiving final approval in the Italian Senate on 3 December. Andrea Lorenzo Capussela and Vito Intini assess whether the reforms, which have proved controversial, will actually have the desired effect in generating economic growth and employment. They write that while increasing the flexibility of the Italian labour market may be desirable, the rigidity of the labour market is not the biggest obstacle to growth in the country. They argue instead that the quality of Italy’s political institutions and governance standards should be the key focus of reform efforts

    Performance Assessment in Fingerprinting and Multi Component Quantitative NMR Analyses

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    An interlaboratory comparison (ILC) was organized with the aim to set up quality control indicators suitable for multicomponent quantitative analysis by nuclear magnetic resonance (NMR) spectroscopy. A total of 36 NMR data sets (corresponding to 1260 NMR spectra) were produced by 30 participants using 34 NMR spectrometers. The calibration line method was chosen for the quantification of a five-component model mixture. Results show that quantitative NMR is a robust quantification tool and that 26 out of 36 data sets resulted in statistically equivalent calibration lines for all considered NMR signals. The performance of each laboratory was assessed by means of a new performance index (named Qp-score) which is related to the difference between the experimental and the consensus values of the slope of the calibration lines. Laboratories endowed with a Qp-score falling within the suitable acceptability range are qualified to produce NMR spectra that can be considered statistically equivalent in terms of relative intensities of the signals. In addition, the specific response of nuclei to the experimental excitation/relaxation conditions was addressed by means of the parameter named NR. NR is related to the difference between the theoretical and the consensus slopes of the calibration lines and is specific for each signal produced by a well-defined set of acquisition parameters

    A Contribution to the Harmonization of Non-targeted NMR Methods for Data-Driven Food Authenticity Assessment

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    Spectroscopic non-targeted methods are gaining ever-growing importance in quality control and authenticity assessment of food products because of their strong potential for identification of specific features of the products by data-driven classifiers. One of the factors hampering the diffusion of spectroscopic non-targeted methods and data-driven classifiers is the lack of harmonized guidelines for their development and validation. In particular, to date, neither conditions to directly compare spectra recorded by different spectrometers nor studies demonstrating the statistical equivalence of the spectra are available. Among the spectroscopic analytical techniques suitable for the development of non-targeted methods, nuclear magnetic resonance (NMR) offers the unique opportunity to generate statistically equivalent signals. In this paper, the feasibility of NMR spectroscopy to generate statistically equivalent NMR signals from a number of different spectrometers was demonstrated for complex mixtures (aqueous extracts of wheat and flour) by organizing an inter-laboratory comparison involving 36 NMR spectrometers. Univariate statistics along with multivariate analysis were exploited to establish unbiased criteria for assessing the statistical equivalence of the NMR signals. The aspects affecting the signal equivalence were investigated, and possible solutions to reduce the extent of the human error were proposed and applied with satisfactory results. This study furnishes the scientific community with an appropriate and easy procedure to validate non-targeted NMR methods and provides error values to be used as a reference for future studies
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