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showing 10 items of 641 documents
Statistical properties of a new student satisfaction index
2010
Quality of Higher Education is increasingly important in all developed countries. In fact quality and reputation are key elements to control the flow of students at national and international level. The authors have shown that quality of education can be improved through a process of self-assessment of the teaching services and a well studied analysis of the student feedback. In particular a new student satisfaction index was formulated which allows student feedback being summarised and interpreted for a continuous course improvement. In this paper some statistical properties of the student satisfaction index are illustrated, and comparisons with other measures based on Likert scales are ma…
La dimensione spaziale nella relazione tra cambiamento della popolazione e formazione di nuove imprese
2015
Questo contributo analizza la relazione tra cambiamento della popolazione e formazione di nuove imprese con particolare attenzione al ruolo dello spazio. Viene infatti, da un lato, analizzata l'influenza della concentrazione spaziale della popolazione rispetto la relazione di interesse, dall'altro, viene utilizzata una specificazione econometrica che tenga conto della correlazione spaziale presente nei dati. Lo studio condotto sulle province italiane per il periodo 2004/2007, mette in luce alcuni aspetti degni di nota. Tra questi, è di particolare interesse l'evidenza che nelle province con maggiore ritorno, in termini di natalità delle imprese, da un incremento della popolazione sono quell…
Implementation of Six Sigma in SMEs. A Case Study in Swedish Industry
2012
Many big companies today have already solid Six Sigma infrastructures. However, all over the world SMEs are only now approaching the methodology. In this presentation we expose an industrial application of a Six Sigma Black Belt project. It shows how Six Sigma was introduced and successfully implemented in a Swedish small-medium sized company. The project was carried out within the Six Sigma Black Belt course run at Chalmers University of Technology in Gothenburg. This case study is included in the book “Statistical and Managerial Techniques for Six Sigma Methodology, Theory and Application” (Wiley, 2012). The company is Structo Hydraulics AB, a manufacturing firm, located in Storfors, whic…
Statistical and managerial techniques for Six Sigma methodology. Theory and Application
2012
Indicatori e metodi per la valutazione delle politiche territoriali: le statistiche sull’ambiente e la contabilità ambientale come strumenti per lo s…
2008
L’ingresso delle implicazioni ambientali all’interno delle logiche e delle programmazioni economiche è avvenuto quando si è compreso appieno che le risorse ambientali, pur essendo riproducibili nella loro essenza fondamentale, non seguono il concetto di riproducibilità tipico, invece, dei processi industriali, interessando cioè non una singola generazione, ma bensì più individui e più generazioni. Proprio tale considerazione è contenuta all’interno della definizione di sviluppo sostenibile che la Commissione Mondiale per l’Ambiente e lo Sviluppo ha elaborato nel 1987 (cfr. Rapporto Brundtland), specificando che i processi di sviluppo e di crescita attuali non dovevano compromettere le capac…
uality Evaluation of “Tardivo di Ciaculli” Mandarins in Post-Harvest Processing on an Industrial Scale Using a Portable Vis/NIR Device
2016
Abstract. Vis/NIR technology is widely used today to quickly and non-destructively evaluate fruit and vegetable qualities, and many applications have been found since the 1990s. However, no industrial-scale applications can further consolidate the use of non-destructive techniques in post-harvest processing. This study aims to test the possibility of applying vis/NIR technology in a modern citrus-processing plant to assess the damage that the fruits eventually suffer when they are processed on an industrial scale and the evolution of their key quality parameters in a period of 10 days after harvest. The spectral acquisitions were performed using a portable vis/NIR device, which operated in …
Prioritisation of alternatives with analytical hierarchy process plus response latency and web surveys
2014
This paper introduces a new method that combines the well-known analytical hierarchy process (AHP) with a response latency metric. The response latency is the time taken by respondents to make choices over pairwise comparisons. The analytical calculation of relative importance weights of the alternatives is made by using a response latency model previously validated in several case studies. This combination aims to overcome some drawbacks of the traditional AHP related to the use of a rating scale (the so-called Saaty scale), and it is a natural way to involve response latency in established decisionmaking methods. This new method can be profitably adopted in web surveys where it is easy to…
A distributional approach for measuring wage discrimination and occupational discrimination separately
2011
Numerous statistical methodologies regarding the study of discrimination are based on the well-known Blinder-Oaxaca (1973) decomposition. This divides the wage differential between men and women into one part, which can be explained by differences in individual characteristics, and another part, which is interpreted as discrimination. This decomposition ignores any distributional issues in evaluating discrimination, thus permitting, undesirably, compensation between positively and negatively discriminated women. Jenkins (1994) has criticized this aspect, instead preferring a distributional approach. Del Rio et al. (2010), using a distributional approach, which hinges on the deprivational a…
SEDENTARINESS AND EDUCATION CONTRIBUTE SIGNIFICANTLY TO SOCIOECONOMIC INEQUALITIES IN NON-COMMUNICABLE DISEASES
2018
In Europe, the main non-communicable diseases (NCDs), including diabetes, cardiovascular diseases, cancer, chronic respiratory diseases and mental disorders, all together account for an estimated 86% of the deaths and 77% of the disease burden. Of the six WHO regions, Europe is the most affected by NCDs [1]. The detection and control of physiological and behavioral risk factors (BRFs) remain the essential preventive strategy to counteract not only the average population’s exposure to the main NCDs, but also socioeconomic inequalities, which are related to chronic diseases. The scope of this work is to investigate socioeconomic inequalities among the European elderly in NCDs and BRFs for NCD…