An explicitly solvable multi‐scale stochastic volatility model: Option pricing and calibration problems

We introduce an explicitly solvable multiscale stochastic volatility model that generalizes the Heston model. The model describes the dynamics of an asset price and of its two stochastic variances using a system of three Ito stochastic differential equations. The two stochastic variances vary on two distinct time scales and can be regarded as auxiliary variables introduced to model the dynamics of the asset price. Under some assumptions, the transition probability density function of the stochastic process solution of the model is represented as a one‐dimensional integral of an explicitly known integrand. In this sense the model is explicitly solvable. We consider the risk‐neutral measure associated with the proposed multiscale stochastic volatility model and derive formulae to price European vanilla options (call and put) in the multiscale stochastic volatility model considered. We use the thus‐obtained option price formulae to study the calibration problem, that is to study the values of the model parameters, the correlation coefficients of the Wiener processes defining the model, and the initial stochastic variances implied by the “observed” option prices using both synthetic and real data. In the analysis of real data, we use the S&P 500 index and to the prices of the corresponding options in the year 2005. The web site http://www.econ.univpm.it/recchioni/finance/w7 contains some auxiliary material including some animations that helps the understanding of this article. A more general reference to the work of the authors and their coauthors in mathematical finance is the web site http://www.econ.univpm.it/recchioni/finance . © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:862–893, 2009     

Shaping Sustainable Value Chains: Network Determinants of Supply Chain Governance Models

Globalization theories posit organizational convergence, suggesting that Codes of Ethics will become commonplace and include greater consideration of global issues. This study explores the degree to which the Codes of Ethics of 157 corporations on the Global 500 and/or Fortune 500 lists include the “third generation” of corporate social responsibility. Unlike first generation ethics, which focus on the legal context of corporate behavior, and second generation ethics, which locate responsibility to groups directly associated with the corporation, third generation ethics transcend both the profit motive and the immediate corporate environment. Third generation ethics are grounded in responsibilities to the larger interconnected environment. The results of the study suggest convergence, insofar as Codes of Ethics are becoming standard communication features of corporations across region and industrial sector but still manifest a primary concern with profits and those behaviors which are mandated by law. Only corporations headquartered in the European Union demonstrate a significant degree of global consciousness and reflexivity. However, there is some evidence that third generation ethics and thinking are becoming part of the corporate landscape. More then three quarters of the corporations made at least some reference to third generation ethics.     

Selective immigration policies, human capital accumulation and migration duration in infinite horizon

An increasing literature fosters selective immigration policies as a tool to increase human capital in both source and destination countries. These policies are supposed to prompt incentives to education, and–if selection is sufficiently severe–to increase the human capital stock in source countries. Nonetheless, when compared to open migration, selective policies make returns to education uncertain, and they may harm incentives to invest in human capital. As a consequence, they may reduce the human capital stock even though selection is “severe”. Moreover, when repeated migration is possible, they backfire on migration duration. We obtain our results in an infinite-horizon model that, unlike the current literature, places no restriction on the number of possible migration spells and allows for the possibility of a forced emigration.     

Policy uncertainty,symbiosis, and the optimal fiscal and monetary conservativeness

This paper extends a well-known macroeconomic stabilization game between monetary and fiscal authorities developed by Dixit and Lambertini (American Economic Review 93: 1522–1542) to multiplicative (policy) uncertainty. We find that even if fiscal and monetary authorities share a common output and inflation target (i.e., the symbiosis assumption), the achievement of the common targets is no longer guaranteed; under multiplicative uncertainty, in fact, a time consistency problem arises unless policymakers’ output target is equal to the natural level.     

Is banking competition beneficial to SMEs? An empirical study based on Italian data

Using a large panel of Italian firms, spanning the years from 1995 to 2003, this study investigates the relationship between bank debt and non-financial SMEs’ performance, evaluating whether and to what extent this link is affected by the degree of competition characterising the local credit market where firms operate. Controlling for inertia, unobserved heterogeneity and the endogeneity of some performance determinants, we find that the (negative) impact of bank debt on firms’ performance is weaker for firms running in more competitive banking markets. We interpret this result as evidence that a more intense banking competition may lead to better credit conditions for small and medium-sized firms.     

Lasting lending relationships and technical efficiency. Evidence on European SMEs

Linking the theoretical predictions of the research on lending relationships with those of the literature on managerial incentives, we investigate whether the duration of credit relationships impacts on SMEs’ technical efficiency. Our hypothesis is that the balance between costs and benefits of enduring banking relationships might have heterogeneous effects on managers’ incentives depending on the level of firms’ indebtedness. Using a large sample of European SMEs, observed in the period 2001–2008, and adopting both parametric and non-parametric measures of efficiency, we find that the positive impact of longer lending relationships on efficiency decreases as indebtedness increases, suggesting that moral hazard problems may endanger firms’ technical efficiency.     

Organizational innovation,technological innovation,and export performance: The effects of innovation radicalness and extensiveness

This study focuses on the relevance of different types of innovation for firms’ export performance. Despite ample research on the innovation–performance relationship, previous studies have mainly focused on technological innovations, leaving the effects of organizational innovations relatively unexplored. Hypotheses on the relationship between organizational and technological innovations and firm export performance are tested by structural equation modelling using data from 218 Swedish export ventures. The results indicate that organizational innovation enhances export performance both directly and indirectly by sustaining technological innovation. Moreover, by fine-graining our analysis of the mediating role of technological innovation, according to its radicalness and extensiveness, for organizational innovation, we show how the latter enhances both the radicalness and extensiveness of technological innovation although, notably, only extensiveness is actually beneficial for export performance. This study helps alleviate the scarcity of research examining the links among different types of innovation in relation to export performance and contributes to international business and marketing literature by generating new evidence regarding the mechanisms through which organizational and technological innovations may improve export performance.     

The Asymmetric Impact of War: Resilience,Vulnerability and Implications for EU Policy

Intereconomics - In 2019, over 96% of EU27 oil needs, nearly 90% of natural gas and over 43% of solid fuels were met by net imports, with the largest share coming from Russia (35% of oil, 40% of...     

Does Green Public Procurement lead to Life Cycle Costing (LCC) adoption?

Life Cycle Costing (LCC) is rarely used in public procurement and public institutions have yet to fully understand its potential value for sustainable procurement. The new European Directive on Public Procurement is, however, designed to position LCC as central to sustainable sourcing. Although previous studies have identified positive correlations between Green Public Procurement Policies (GPP) and LCC, it is still unclear how public institutions can further adopt LCC practices by leveraging their experience of green sourcing. In this study an organizational learning theoretical perspective is taken to investigate the circumstances under which public administrations’ experience of GPP – considered as a way of integrating the dimension of environmental sustainability into the sourcing process – stimulates their LCC learning and capabilities – considered as a way to include the sustainability economic dimension. The goal is to understand if the adoption of GPP can stimulate the internalisation of LCC in public tenders. A multinomial logistic regression was conducted using a sample of 120 public administrations located in different countries. The results show that experience of GPP stimulates the internalisation of LCC at a public level, but only under specific conditions. The study contributes to the Sustainable Supply Management literature, being one of the first studies in the field adopting an organizational learning theoretical lens to review the role of experience as significant opportunity to develop capabilities. It also contributes to the organizational learning theory, by confirming that experience can aid learning but only in specific environmental contexts.