Optimal safety stock levels of subassemblies and manufacturing components

In order to control the time to market and manufacturing costs, companies produce and purchase many parts and components before receiving customer orders. Consequently, demand forecasting is a critical decision process. Using modular product design and super bills of materials are two effective strategies for developing a reliable demand forecasting process. They reduce the probability of stockouts in diversified production contexts. Furthermore, managing and controlling safety stocks for pre-assembled modules provide an effective solution to the problem of minimizing the effects of forecast errors. This paper develops, evaluates, and applies innovative cost-based analytical models so that the optimal safety stock of modular subassemblies and components in assembly to order and manufacturing to order systems, respectively, can be rapidly quantified. The implementation of the proposed models in two industrial case applications demonstrates that they significantly reduce the safety stock inventory levels and the global logistical cost.     

Public service motivation and public sector employment preference: Comparing Italian and British students

ABSTRACT

Previous research has suggested that an individual’s public service motivation (PSM) is positively linked to a preference for public sector employment. The authors explore this link using a sample of British and Italian undergraduate students. They found a positive relationship between PSM and public sector job preferences among Italian students but not with the British students. The UK has implemented more NPM-style reforms than Italy and this could be impacting on public sector recruitment. Implications for recruitment and retention the public sector are discussed.     

A semiparametric random effects approach to unobserved heterogeneity in count data models of organizational founding

The paper discusses a semiparametric random-effects approach to the problem of unobserved population heterogeneity in organizational research based on models for pooled cross-sectional time series count data. The analytical value of this approach rests in its ability to produce estimates of the structural parameters that do not depend on any specific assumption about the distribution of the heterogeneity components in the population. The practical value of the method proposed is illustrated in an empirical application to processes of organizational founding, and to the relation between density dependence and unobserved heterogeneity in spatially distributed organizational populations. The empirical evidence produced suggests that future studies of organizational founding at the population level will have to account for variation in observed as well as unmeasured (or unobservable) variables.     

Quoted spreads and trade imbalance dynamics in the European Treasury bond market

Using high-frequency transaction data for the three largest European markets (France, Germany and Italy), this paper documents the existence of an asymmetric relationship between market liquidity and trading imbalances: when quoted spreads rise (fall) and liquidity falls (increases) buy (sell) orders tend to prevail. Risk-averse market-makers, with inventory-depletion risk being their main concern, tend to quote wider (narrower) spreads when they think bond appreciation is more (less) likely to occur. It is also found that the probability of being in a specific regime is related to observable bond market characteristics, stock market volatility, macroeconomic releases and liquidity management operations of the monetary authorities.     

Interregional Migration of Human Capital and Unemployment Dynamics: Evidence from Italian Provinces

Since the mid‐1990s interregional migration flows in Italy have dramatically increased, especially from the South to the North. These flows are characterized by a strong component of human capital, involving a large number of workers with secondary and tertiary education. Using longitudinal data for the period 2002–2011 at NUTS‐3 territorial level, we document that long‐distance (i.e., South‐North) net migration of high‐skill workers has increased the unemployment at origin and decreased it at destination, thus deepening North–South unemployment disparities. On the other hand, long‐distance net migration of low‐skill workers has had the opposite effect, by lowering the unemployment at origin and raising it at destination. Further evidence also suggests that the diverging effect of high‐skill migration dominates the converging effect of low‐skill migration. Thus, concerns for an ‘internal brain drain’ from Southern regions look not groundless.     

Trust and foreign ownership: Evidence from intra‐European foreign direct investments

We use a novel firm‐level dataset to test whether trust affects the volume and the ownership structure FDI across Europe. Our methodology deals with the endogeneity of trust from the investor to the recipient country. We expect such a trust measure to affect investment decisions, and the associated knowledge capital, differently across types of foreign investors. In particular, this effect is expected to be stronger for industrial investors who possess transferable knowledge capital. The data confirm our predictions. Higher trust increases the number and volume of FDIs, but also the probability of co‐investing with a partner from the recipient country.     

Public debt indexation and denomination with an independent central bank

This paper examines the interaction between public debt management and the design of monetary institutions. The analysis shows that delegation of monetary policy to an independent central bank is more effective in containing inflationary expectations than the use of foreign currency or inflation-indexed debt. If delegation of monetary policy is viable, the optimal policy is to issue nominal debt. This increases the sensitivity of taxes and output to unexpected inflation, thus minimizing the inflation needed to offset supply shocks. Evidence on central bank independence, debt composition and output variability suggests that the normative argument has some positive content.     

Child Labour Education and Nutrition in Rural India

Decisions concerning child labour, education and nutrition are taken by parents simultaneously with decisions affecting fertility and infant mortality. This implies that child labour cannot be abolished without altering the conditions that make it optimal for parents to make their children work. Such conditions can be altered not only by educational policies, such as free or subsidized provision of school facilities, but also by more broadly aimed policies, such as sanitation or preventive medicine.     

Ideology and endogenous constitutions

We study a legislature where decisions are made by playing an agenda-setting game. Legislators are concerned about their electoral prospects but they are also genuinely concerned for the legislature to make the correct decision. We show that when ideological polarization is positive but not too large (and the status quo is extremely inefficient), institutions in which the executive has either no constraints (autocracy) or many constraints (unanimity) are preferable to democracies that operate under an intermediate number of constraints (simple majority rule). When instead ideological polarization is large (and the status quo is only moderately inefficient), simple majority turns out to be preferable.     

The cyclical behaviour of inventories: European cross-country evidence from the early 1990s recession

This paper employs data for a panel of firms from France, Italy and the UK to study the effect of the recession of the early 1990s on inventory investment, controlling for cyclical fluctuations at the firm level. The results clearly show some common patterns across countries, pointing to the relevance of financial factors (namely, the level of leverage) in propagating initial recessionary shocks. Moreover, Italian firms, especially if ‘small and young’, seem more likely to suffer from a reduction in the value of collateralizable assets possibly originated by restrictive policy actions.