Student time allocation and educational production functions

In this paper we aim to remedy some shortcomings in the economic literature on university student absenteeism and academic performance. We start by introducing a simple theoretical model in which students decide the optimal allocation of their time between lecture attendance, self-study and leisure. Under some specific assumptions, we find a positive relationship between lecture attendance and time devoted to self-study in each course, from which we infer that estimates of student performance regressions which omit self-study might be biased. Thus, we estimate an academic performance regression using data from first year undergraduate students of economics in the academic year 1998-99 at the University of Ancona (Italy) and find evidence that once self-study time is controlled for, the positive and significant effect of lecture attendance for some courses disappears. This is likely to be important especially when student performance regressions are used to evaluate the effectiveness of course attendance and to inform the debate on the introduction of mandatory attendance on some courses to enhance student performance.course attendance, student performance, time allocation

On Short-Term Contracts Regulations

We present a theoretical as well as empirical analysis of the impact of employment regulations on permanent and temporary employment. We consider three different forms of such regulations, namely insider protection, fixed term contract regulations, and legislation on temporary work agencies, and we present some empirical evidence as regards total, female and young employees based on a panel of nine European countries. We show that these three types of regulations have different impacts on the employment performances of those countries. Moreover, these institutions act asymmetrically along the business cycle. The most notable findings are that lower employment protection leads to the substitution of permanent employees by termporary ones with an insignificant net effect on the total; more flexible regulations on fixed term contracts have a beneficial effect on temporary as well as permanent employment among young people; flexible regulations on temporary work agencies have a positive impact on temporary employment, while they may reduce permanent employment.Fixed Term Contracts, Temporary Work Agencies, Temporary Employment, Labour Market Institutions, Employment Protection

Can Market Power influence Employment, Wage Inequality and Growth ?

We introduce an efficiency-wage mechanism into an innovation-driven growth model. Due to informational problems, the labour market is segmented and homogeneous workers may be employed either in a non-competitive intermediate sector or in a competitive research one. We analyse the impact that variations in the monopoly power of the intermediate firms may have on unemployment, wage inequality and growth. We find that the lower the product market competition in the intermediate sector, the higher the research employment, the lower the intermediate sector employment, the higher the aggregate growth rate. Growth and inequality are negatively correlated whereas growth and unemployment are positively correlated. The last two results are obtained through numerical simulations.Efficiency wages; research and development; endogenous growth; market power

Individual Earnings, International Outsourcing and Technological Change.

The aim of this paper is to empirically evaluate the relative effects of international outsourcing of materials and services and of ICT capital deepening on wage inequality between blue and white collars in the Italian manufacturing industry during the period 1985-1999. We merge an administrative data set on workers\' wages and individual characteristics with data on imported inputs from Italian input-output tables and other sector-level variables. Our results confirm that both material and service outsourcing widen the skilled/unskilled wage gap while ICT capital deepening positively affects real wages regardless of the worker\'s status. However, important differences emerge when the overall sample is split between traditional and innovative sectors.International Outsourcing, ICT, Wage Inequality

Enrollment costs, university quality and higher education choices in Italy

In this paper, we analyze the higher education choices of Italian secondary school leavers by addressing the roles of university quality, costs and geographical distance to the institution as well as the relationship between students’ choices and their personal and household’s attributes, such as individual secondary school background and the socio-economic condition of the family of origin. Grounding such decision process on the framework of the Random Utility Model (RUM), we provide empirical evidence on the determinants of students’ choices by estimating a nested logit model on the ISTAT survey of secondary school graduates. Results show that the effects of increasing costs of enrollments and university standards are strongly differentiated across sub-groups of individuals. In particular, the choice probability of weaker students, in the sense of secondary school background and household’s socio–economic condition, is more sensitive to changes in university costs and quality

Enrollment costs, university quality and higher education choices in Italy

In this paper, we analyze the higher education choices of Italian secondary school leavers by addressing the roles of university quality, costs and geographical distance to the institution as well as the relationship between students’ choices and their personal and household’s attributes, such as individual secondary school background and the socio-economic condition of the family of origin. Grounding such decision process on the framework of the Random Utility Model (RUM), we provide empirical evidence on the determinants of students’ choices by estimating a nested logit model on the ISTAT survey of secondary school graduates. Results show that the effects of increasing costs of enrollments and university standards are strongly differentiated across sub-groups of individuals. In particular, the choice probability of weaker students, in the sense of secondary school background and household’s socio–economic condition, is more sensitive to changes in university costs and quality

The Enter-Vet Italian surveillance network: data on samples of pig origin from 2002 to 2005

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Association of MiR-126 with Soluble Mesothelin-Related Peptides, a Marker for Malignant Mesothelioma

BACKGROUND: Improved detection methods for diagnosis of malignant pleural mesothelioma (MPM) are essential for early and reliable detection as well as treatment. Since recent data point to abnormal levels of microRNAs (miRNAs) in tumors, we hypothesized that a profile of deregulated miRNAs may be a marker of MPM and that the levels of specific miRNAs may be used for monitoring its progress. METHODS AND RESULTS: miRNAs isolated from fresh-frozen biopsies of MPM patients were tested for the expression of 88 types of miRNA involved in cancerogenesis. Most of the tested miRNAs were downregulated in the malignant tissues compared with the normal tissues. Of eight significantly downregulated, three miRNAs were assayed in cancerous tissue and adjacent non-cancerous tissue sample pairs collected from 27 formalin-fixed, paraffin-embedded MPM tissues by quantitative RT-PCR. Among the miRNAs tested, only miR-126 significantly remained downregulated in the malignant tissues. Furthermore, the performance of the selected miR-126 as biomarker was evaluated in serum samples of asbestos-exposed subjects and MPM patients and compared with controls. MiR-126 was not affected by asbestos exposure, whereas it was found strongly associated with VEGF serum levels. Levels of miR-126 in serum, and its levels in patients' serum in association with a specific marker of MPM, SMRPs, correlate with subjects at high risk to develop MPM. CONCLUSIONS AND SIGNIFICANCE: We propose miR-126, in association with SMRPs, as a marker for early detection of MPM. The identification of tumor biomarkers used alone or, in particular, in combination could greatly facilitate the surveillance procedure for cohorts of subjects exposed to asbestos

Serum Albumin Is Inversely Associated With Portal Vein Thrombosis in Cirrhosis

We analyzed whether serum albumin is independently associated with portal vein thrombosis (PVT) in liver cirrhosis (LC) and if a biologic plausibility exists. This study was divided into three parts. In part 1 (retrospective analysis), 753 consecutive patients with LC with ultrasound-detected PVT were retrospectively analyzed. In part 2, 112 patients with LC and 56 matched controls were entered in the cross-sectional study. In part 3, 5 patients with cirrhosis were entered in the in vivo study and 4 healthy subjects (HSs) were entered in the in vitro study to explore if albumin may affect platelet activation by modulating oxidative stress. In the 753 patients with LC, the prevalence of PVT was 16.7%; logistic analysis showed that only age (odds ratio [OR], 1.024; P = 0.012) and serum albumin (OR, -0.422; P = 0.0001) significantly predicted patients with PVT. Analyzing the 112 patients with LC and controls, soluble clusters of differentiation (CD)40-ligand (P = 0.0238), soluble Nox2-derived peptide (sNox2-dp; P < 0.0001), and urinary excretion of isoprostanes (P = 0.0078) were higher in patients with LC. In LC, albumin was correlated with sCD4OL (Spearman's rank correlation coefficient [r(s)], -0.33; P < 0.001), sNox2-dp (r(s), -0.57; P < 0.0001), and urinary excretion of isoprostanes (r(s), -0.48; P < 0.0001) levels. The in vivo study showed a progressive decrease in platelet aggregation, sNox2-dp, and urinary 8-iso prostaglandin F2 alpha-III formation 2 hours and 3 days after albumin infusion. Finally, platelet aggregation, sNox2-dp, and isoprostane formation significantly decreased in platelets from HSs incubated with scalar concentrations of albumin. Conclusion: Low serum albumin in LC is associated with PVT, suggesting that albumin could be a modulator of the hemostatic system through interference with mechanisms regulating platelet activation

Sviluppo di un applicativo per la raccolta di dati generati da IMU su scheda di computazione eterogenea

L'automazione industriale e la nascita della cosiddetta industria 4.0 ha portato allo sviluppo di nuove tecnologie e la necessità di sviluppare sistemi in grado di acquisire dati da sensori, per applicazioni come la diagnostica di macchine automatiche. In questa tesi, sviluppata presso il Laboratorio di Automazione e Robotica dell'Università di Bologna verrà mostrata una pipeline per l'acquisizione di dati generati da sensori IMU tramite una scheda di computazione eterogenea, composta da un microcontrollore e un microprocessore dual-core