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    A permutation approach to examine the satisfaction of italian population towards transport service

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    When public transport system represents a primary need for citizens, the analysis of users’ satisfaction is of the utmost importance to offer and obtain an efficient service. It is clear that a customer will be "satisfied", if his expectations are met and will be" disappointed", if his needs are ignored. In the transport field, the formulation and the definition of organizational and operational criteria are essential requisites to improve service quality. Restoring and improving modes and procedures will certainly guarantee an increasing efficiency, but the evaluation of customer satisfaction has been gaining more and more importance in order to achieve such a goal: different transport companies have been able to set such quality standards not only thanks to their own abilities, but also by taking into account specific service needs, directly expressed by customers through an adequate monitoring process. With this paper our aim is to make a study that analizes the satisfaction of the Italian population using transport service. With a particular reference to "Buses," "Coaches" and "Trains", we are going to evaluate the proportion of satisfied public transport users according to ISTAT indicators (frequency, punctuality and seats availability) both in regional and in geographical divisions. The methodology used is based on permutation tests

    A non parametric approach for the study of the controls in the production of agribusiness products

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    The present study regards the analysis of the visits (and the relative disputes) for checking the preparation of agribusiness products, noticed by the ICQ on the whole national territory, occurred in the period 1997-2006. The research has been performed on the available data for year and for sector. Particularly the examined sectors has been: Milk-Cheese, Feed and Integrators, Eggs, Honey and Meats. First of all, we have realized the "dispute rates", dividing the number of dispute to the total number of inspection visits for each sector and year. In this way, we focused our attention both on the temporal variations of the dispute rates in the years and on the comparison among the different sectors of production. We used a nonparametric approach, since we haven’t guarantee about asymptotically valid results: in particular we applied the Cox and Stuart test for trend, the NPC test and the NPC Ranking
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