Considerazioni generali sull’impostazione Bayesiana di problemi non parametrici. Le medie associative nel contesto del processo aleatorio di Dirichlet parte II

Nei problemi statistici non parametrici la conoscenza della distribuzione iniziale e finale di una generica media associativa si manifesta particolarmente utile. Se la classe delle possibili funzioni di ripartizione scelte per descrivere un fenomeno è retta da un processo di Dirichlet nel senso precisato in D. M. Cifarelli — E. Regazzini (1979), è possibile pervenire ad una rappresentazione esplicita della distribuzione iniziale e ad una relazione ricorrente per il calcolo della distribuzione finale di una generica media associativa, secondo quanto si dimostra in questo lavoro. Lavoro eseguito nell’ambito G.N..F.A. del C.N.R.. A D.M. Cifarelli sono dovuti: i Lemmi 1, 4, i Teoremi 1, 2 ed il numero 3. Ad E. Regazzini sono dovuti: i Lemmi 2, 3, 7, il Teorema 3, il numero 2.3 e le Osservazioni 1, 2. La Parte I è stata pubblicata in questo periodico Anno 2°, Fasc. 1°.     

Corporate Financing Decisions and Non-Debt Tax Shields: Evidence from Italian Experiences in the 1990s

Between 1995 and 1999, Italy experienced three episodes of fiscal reform during which different categories of non-debt tax shields were introduced, including a classical investment tax credit, a system of dual income taxation, and an investment tax credit restricted to equity financed investments. Using the balance sheets of a large sample of Italian companies, we construct a data set which allows us to evaluate the impact of the different fiscal interventions. We apply MacKie-Mason's (1990) method to study incremental financing decisions using discrete choice analysis. The analysis shows that the measures introduced were successful in reducing the advantage of debt financing relative to equity financing. We relate the findings to the current literature on the determinants of capital structure. JEL Code: G32, H25     

Technological regimes and demand structure in the evolution of the pharmaceutical industry

This paper examines how the nature of the technological regime governing innovative activities and the structure of demand interact in determining market structure, with specific reference to the pharmaceutical industry. The key question concerns the observation that—despite high degrees of R&D and marketing-intensity—concentration has been consistently low during the whole evolution of the industry. Standard explanations of this phenomenon refer to the random nature of the innovative process, the patterns of imitation, and the fragmented nature of the market into multiple, independent submarkets. We delve deeper into this issue by using an improved version of our previous “history-friendly” model of the evolution of pharmaceuticals. Thus, we explore the way in which changes in the technological regime and/or in the structure of demand may generate or not substantially higher degrees of concentration. The main results are that, while technological regimes remain fundamental determinants of the patterns of innovation, the demand structure plays a crucial role in preventing the emergence of concentration through a partially endogenous process of discovery of new submarkets. However, it is not simply market fragmentation as such that produces this result, but rather the entity of the “prize” that innovators can gain relative to the overall size of the market. Further, the model shows that emerging industry leaders are innovative early entrants in large submarkets.     

Investor protection and value creation in cross‐border M&As by emerging economies

Previous research investigating cross‐border M&As (CBM&As) by emerging economies (EEs) provided contrasting evidence on the value enhancement role of investor protection rules. We conduct a new empirical study to address the issue with an accurate sample selection of bidders from more homogeneous developing countries and transactions on developed countries only. Our analysis over the 1997–2012 period on a sample of M&A deals by companies from Brazil, Russia, India, China, and South Africa (BRICS) does not provide evidence that better institutional standards in the destination country are rewarded by the local stock market. We find that foreign governance quality is not associated with positive excess stock returns around the announcement date. Rather, these returns are affected by firm‐specific and deal‐specific factors, such as the relative deal size, the listed status of the target company, and the acquirer size. Comparison with other studies on excess returns for emerging markets (including BRICs) suggests that the results could be driven at least partially by country choice.     

Intergenerational Earnings Inequality: New Evidence From Italy

Using an innovative dataset built by merging survey and administrative data, we provide new estimates of intergenerational earnings’ inequality between fathers and sons in Italy, extending previous evidence in several directions. We rely on the TSTSLS method to predict fathers’ earnings and compute intergenerational elasticities and imputed rank–rank slopes, trying to reduce estimation biases. Confirming previous evidence, we find that Italy is characterized by a high intergenerational inequality in cross-country comparison. Extending previous analyses, we show that the intergenerational association increases when sons at older ages and multi-annual averages of pseudo-fathers’ and sons’ earnings are considered. We also find that the intergenerational persistence differs across geographical macro-areas and is high also for daughters, especially when family earnings are considered. Furthermore, estimates where possible mediating factors of the parental influence are included among the covariates show that a high intergenerational association persists when sons’ education and occupation are controlled for.     

Boosting the spread of new technologies: an integrative propositional analysis of diffusion policies

ABSTRACT

Although many studies have recognised the importance of defining specific public policies to encourage technology diffusion, many authors fail to provide a clear view about either the policies that affect the diffusion of technologies or the effect of the different political instruments. Adopting a content analysis of papers that directly or indirectly refer to the diffusion of a new technology, this study applies the integrative propositional analysis (IPA) methodology to: (a) identify the repertoire of the different diffusion policies identified by previous studies; (b) classify these policies according to the type of instruments that they use; (c) analyse the impact of each policy on the different adoption factors that may inhibit or foster the diffusion of a new technology; and (d) evaluate the scope of each type of policy in terms of the number of affected adoption factors.     

Signaling in science-based IPOs: The combined effect of affiliation with prestigious universities,underwriters, and venture capitalists

This paper studies the combined effect of affiliation with prestigious universities, underwriters, and venture capitalists on the valuation of biotech ventures at IPO and their post-IPO performance. We argue that affiliation to a prestigious university provides the affiliated firm with a quality signal in the scientific domain. The pure quality signaling effect of the affiliation is isolated from the substantive benefits it provides by performing a difference-in-difference approach based on the scientific reputation of scientists in firms' upper echelons. The signal is stronger the weaker is the scientific reputation of scientists of the focal IPO-firm and is additive to those provided by prestigious venture capitalists and underwriters. Results for a sample of 254 European biotech ventures that went through an IPO between 1990 and 2009 confirm our predictions.     

Highway to (Digital) Surveillance: When Are Clients Coerced to Share Their Data with Insurers?

Journal of Business Ethics - Clients may feel trapped into sharing their private digital data with insurance companies to get a desired insurance product or premium. However, private insurance must...