Revised MRP for reducing inventory level and smoothing order releases: a case in manufacturing industry

Although material requirement planning (MRP) systems are widely used in manufacturing companies, they exhibit significant drawbacks. Rev MRP algorithm has been developed in order to reduce the system nervousness, generate a more regular pattern of order released and lower inventory levels. The aim of this paper is to test the Rev MRP algorithm on the case of one of the largest Italian manufacturing companies of home appliances. The company provided three sets of real data, referring to three different runs of their MRP. Results showed that the Rev MRP outperformed the company’s MRP smoothing the production order releases, eliminating overshoots and drastically reducing the inventory levels along the supply chain, even in case of frequent forecasts updates.     

Field of Study and University Graduates' Early Employment Outcomes in Italy during 1995–2004

Abstract. In a period of expanding higher education, the field of study becomes a key determinant of university graduates' labour market success. In this paper, by means of multivariate analyses of the quality of graduates' early employment outcomes, we first describe how the effect of different fields of study on the university‐to‐work transition changed between 1995 and 2004 in Italy. Second, we put forward some alternative hypotheses to interpret the changes observed over time and assess which ones seem to be more consistent with the data.     

New Mothers’ Labour Force Participation in Italy: The Role of Job Characteristics

Abstract. In this paper we use newly available individual‐level data from the Longitudinal Survey of Italian Households to investigate the factors associated with female labour force participation after the birth of the first child. We focus on the role of pre‐marital job characteristics and find that new mothers who worked without a contract are less likely to participate, while those who worked in the public sector or in a large private firm have a higher probability of being in the labour force after childbearing. We suggest that these effects could be at least partly attributed to differences in the level of job protection and employment stability enjoyed by workers. This implies that in Italy women with highly protected and stable jobs might find it easier to combine career and family, whereas those who are less sheltered by the legislation might be more likely to be inactive after becoming mothers.     

Identification of long memory in GARCH models

Abstract: This work extends the analysis of Baillie, Bollerslev and Mikkelsen (1996) and Bollerslev and Mikkelsen (1996) on the estimation and identification problems of the Fractionally Integrated Generalized Autoregressive Conditional Heteroskedastik (FIGARCH) model. We assess the power of different information criteria and tests in identifying the presence of long memory in the conditional variances. The analysis is performed with a Montecarlo simulation study. In detail, the focus on the Akaike, Hannan-Quinn, Shibata and Schwarz information criteria and on the Jarque-Bera test for normality, Box-Pierce test for residual correlation and Engle test for ARCH effects. This study verifies that information criteria clearly distinguish the presence of long memory while tests do not evidence any difference between the fitted long and short memory models. An empirical application is provided; it analyses, on a high frequency dataset, the returns of the FIB30, the future on the MIB30, the Italian stock market index of highly capitalized firms.Massimiliano Caporin: mcaporin@unive.itThis paper was presented at the SIS 2002 Conference (Italian Statistical society annual meeting) held in Milan, University Bicocca, 5-7 June 2002. A short version of this work can be found in the proceedings of the conference     

Entrepreneurial Orientation in low- and medium-tech industries: The need for Absorptive Capacity to increase performance

The implications of Entrepreneurial Orientation (EO) for firm performance in low- and medium-tech (LMT) industries are largely unexplored and seem to be limited. In this paper we seek to address this research gap studying how Absorptive Capacity can act as a key factor determining the effectiveness of EO in such a context. Specifically, we adopt the knowledge-based view of the firm and explore the moderating effects of Absorptive Capacity’s Potential and Realized dimensions on the EO–performance relationship in LMT industries. Our regression results based on a lagged dataset of 103 medium-sized firms based in Italy confirm our hypotheses that, in LMT industries, EO has a positive effect on firm performance when coupled with high levels of both Potential and Realized Absorptive Capacity.     

Does speaking or writing Italian make differences?

Although researchers acknowledge the key role of language in immigrant integration, empirical analyses on how proficiency in Italian differently shape the social outcomes of immigrants living in Italy are limited. Using the Italian Survey on Social Condition and Integration of Foreign Citizens, we model individual demographic and linguistic patterns, setting apart communication ability from other linguistic skills. Clustering immigrants by mother tongue linguistic group, we leverage the age at arrival and knowledge of Italian during childhood to address endogeneity. Findings reveal how deficiencies in Italian affect integration outcomes of immigrants: the magnitude of effects due to poor proficiency in communication (understanding and speaking) is larger when compared to more formal linguistic skills (reading and writing). Women suffer from higher linguistic barriers in the employment outcomes than men do. Results give empirical argumentations to support immigrant integration through the development of language-training programmes in destination languages tailored on immigrants' demographic and linguistic profiles.     

Do Foreigners Cushion Native Jobs? The Case of European Regions in the 1990s

Abstract. This paper investigates whether foreigners cushion native labour during the phases of the economic cycle. The theoretical model, based on the work of Blanchard and Katz (Brookings Papers on Economic Activity 0(1): 1–75, 1992), assumes that foreigners supply labour with a higher wage elasticity than natives. The empirical analysis, based on an unbalanced panel of 161 European regions during 1988–97, shows that following a labour demand shock the variability of native employment growth is lower the higher the proportion of foreign citizens in the local labour force. These results suggest that foreigners absorb some of the effects of the shock, shielding natives from its full impact. The analysis also reveals that the main channel mediating this ‘cushioning’ effect is the inter‐regional migration of foreign workers, followed (as a far distant second) by their higher/lower unemployment rates.