On loss functions and ranking forecasting performances of multivariate volatility models

The ranking of multivariate volatility models is inherently problematic because when the unobservable volatility is substituted by a proxy, the ordering implied by a loss function may be biased with respect to the intended one. We point out that the size of the distortion is strictly tied to the level of the accuracy of the volatility proxy. We propose a generalized necessary and sufficient functional form for a class of non-metric distance measures of the Bregman type which ensure consistency of the ordering when the target is observed with noise. An application to three foreign exchange rates is provided.     

Structural Change and Growth in a NEG Model

This paper presents a New Economic Geography model of structural change, agglomeration and growth. Assuming a non‐homothetic preference structure, our results show that a progressive reduction of trade costs allows the economy to pass from a pre‐industrialized to an industrialized stage and then, within the latter, from a dispersed to an urbanized regime. However, the introduction of capital accumulation and the dynamic setting of our model opens the door to a richer set of implications. First, an additional stage is introduced as, for some intermediate values of trade costs, a multiple equilibria regime emerges with simultaneously stable symmetric and core‐periphery equilibria. Second, the introduction of non‐homotheticity introduces a new channel through which growth is affected by trade costs and agglomeration. In particular, integration is always growth‐enhancing while agglomeration is growth‐detrimental.     

Improving rural livelihoods through the conservation and use of underutilized species: evidence from a community research project in Yemen

The aim of this paper is to analyse the impact of a set of interventions related to conservation and use of neglected and underutilized species (NUS) on people's livelihoods. Specifically, a simultaneous three-equation model of households' participation on underutilized crops conservation and income generation activities is applied to evaluate the outcome of a pilot research project implemented by Bioversity International in Yemen between 2002 and 2005. Results generated show a relation between project participation and the perceived yield increase demonstrating the importance for farmers to actively participate in the project's activities and subsequently apply agronomic practices learnt to improve their livelihood. The generated benefits incentivized farmers to continue to apply the interventions beyond the lifetime of the project ensuring thus a sustainable process in which exogenous interventions, once adopted by farmers become integrant part of farmer's agronomic practices.     

Tax morale and tax evasion reports

The study proposes a new measure of tax morale for Italy based on voluntary tax evasion reports. Using this measure, I detected a positive relationship between tax morale and social capital, political participation, and immigration, but a negative relationship between tax morale and the dissatisfaction with public services and unemployment.     

Coordination in evolving networks with endogenous decay

This paper studies an evolutionary model of network formation with endogenous decay, in which agents benefit both from direct and indirect connections. In addition to forming (costly) links, agents choose actions for a coordination game that determines the level of decay of each link. We address the issues of coordination (long-run equilibrium selection) and network formation by means of stochastic stability techniques. We find that the long-run behavior of the system depends on a fine interplay of the link cost and the trade-off between efficiency and risk-dominance.     

Profits persistence and ownership: evidence from the Italian banking sector

The hypothesis that ownership structure affects persistence of profits in the Italian banking industry is tested. The time-invariant components of ROA and ROE are regressed against ownership concentration and the fraction of shares held by the major shareholders. The results show that abnormal profits increase if ownership is concentrated in foundations and banks, and decrease if market forces are allowed to operate.     

The determinants of innovation in green supply chains: evidence from an Italian sectoral study

Innovation processes are increasingly spreading through the unbounded universe of European small and medium enterprises (SMEs). It represents a fundamental opportunity especially for those SMEs operating in the so‐called ‘green economy’ sectors, in order to be competitive in a National, European and International market with their sustainable products and services. Drawing upon a database of over 300 enterprises operating within the eight defined green sectors, this paper assesses the determinants and drawbacks of innovation. In particular, by using an econometrical approach, we tested the following propositions: (1) small dimension of enterprises is not an obstacle to their innovation capabilities; (2) the adoption of an internationalisation strategy is an opportunity and a stimulus to innovation for SMEs; (3) cooperation with research centres, financial partners, trade association and public entities can help SMEs to overcome difficulties and help them to develop and offer innovative products and services, so to be competitive at an international level. The econometric analysis shows a positive impact of the variables ‘dimension’ and ‘level of internationalisation’ on innovation capabilities. In addition, cooperation with research centres and access to capital market are positively related with effective innovations.     

Anti-Waste Labeling and Consumer Willingness to Pay

ABSTRACT

Food waste is an important topic in the general context of food consumption sustainability and ethical consumption. Several studies have focused on environment-friendly labeling schemes based on different “ethical attributes,” such as organic, fair trade, and locally grown. However, the effect of a labeling scheme based on food waste prevention has never been studied. In the current work, experimental auctions were used to investigate the effect of a certification about containing food waste within a certain threshold on participants’ willingness to pay. The product chosen for the auctions was the French baguette (500 g) packaged with a paper wrapper. Furthermore, we examined whether the effect would be moderated by different communication strategies about the consequences of wasting. Specifically, two different frames of reference were used: the first is based on the carbon footprint, the other on the water footprint. Our results showed that waste prevention–based labeling positively affected participants’ willingness to pay and that this effect was enhanced by the carbon footprint frame of reference.     

A Remark on Voters' Rationality in a Model of Representative Democracy

Voting games are characterized by the emergence of dominated strategies, that would be iteratively deleted by rational players. In this note we show, via an example, how applying iterated dominance restricts the set of equilibrium outcomes in Besley and Coate's (1997) citizen-candidate model of representative democracy.