Asymmetric competition and collection rates differentials: determinants of prices in international telephone service markets

The paper investigates determinants of pricing in international telephone service markets. The analysis—focused on 24 worldwide national markets—shows the impact of several telecommunications-specific and macroeconomic variables on collection rate differentials and traffic imbalance between countries. An econometric model is aimed at performing quantitative analysis and providing support to future telecommunications policies.     

Asymmetry in mobile access charges: is it an effective regulatory measure?

This paper analyses the regulation of the market of voice call termination on mobile networks, by considering the remedy of asymmetric access charges and the hypothesis of discriminatory retail pricing. In the two way interconnection, the operators revenue depends on two factors: the retail price and the access charge. If the retail prices are different between calls that terminate on the same network (on-net) and calls that terminate on the rival network (off-net), the competition is more complex, involving positive networks externalities for the incumbent operator. In order to reduce the competitive disadvantage for new entrants and smaller operators many European regulation authorities have introduced the remedy of asymmetric access charges. This paper is aimed at analysing the effectiveness of this regulatory measure, assuming that operators are differentiated in terms of brand loyalty and cost structure.     

Tax compliance under horizontal and vertical equity conditions: An experimental approach

Tax compliance is a complex phenomenon, which requires to be addressed from different perspectives. We report the results of a real-effort experiment aiming at testing the effect of different equity conditions on individual tax compliance levels. We show that equity considerations seem to change individual behaviour only when a vertically unfair tax system is implemented. Also, random effects Tobit estimations show that being audited in the previous period has a negative effect on tax evasion, whereas the level of the fine paid in the previous period positively affects income underreporting. Also, we find that when subjects are in the vertical inequity condition they are significantly more likely to fully evade taxes than in the equity condition, whereas such result cannot be found in the horizontal inequity condition. Finally, we find a standard gender effect showing that female participants are less likely to evade taxes than man and that risk aversion negatively affect tax evasion behaviour.     

Do small shareholders count?

We hypothesize that age similarity among small shareholders acts as an implicit coordinating device for their actions and, thus, could represent an indirect source of corporate governance in firms with dispersed ownership. We test this hypothesis on a sample of Swedish firms during the 1995-2000 period. Consistent with our hypothesis, we find that compared with shareholders of differing ages, same-age noncontrolling shareholders sell more aggressively following negative firm news; firms with more age-similar small shareholders are more profitable and command higher valuation; and an increase (decline) in a firm's small shareholder age similarity brings a significantly large increase (decline) in its stock price. The last effects are more pronounced in the absence of a controlling shareholder.     

The role of institutional investors in propagating the crisis of 2007–2008

Using novel data on investors' bond portfolios, we study the contagion of the crisis from securitized bonds to corporate bonds. When securitized bonds became “toxic” in August 2007, mutual funds retained the now illiquid securitized bonds and sold corporate bonds. Funds with negative flows or high liquidity needs liquidated more than others. Yield spreads increased more for corporate bonds whose pre-crisis bondholders were more heavily exposed to securitized bonds, compared to same-issuer bonds held by unexposed investors. The findings suggest that liquidity-constrained investors with exposure to securitized bonds played a role in propagating the crisis from securitized to corporate bonds.     

Can Linear Predictability Models Time Bull and Bear Real Estate Markets? Out-of-Sample Evidence from REIT Portfolios

A recent literature has shown that REIT returns contain strong evidence of bull and bear dynamic regimes that may be best captured using nonlinear econometric models of the Markov switching type. In fact, REIT returns would display regime shifts that are more abrupt and persistent than in the case of other asset classes. In this paper we ask whether and how simple linear predictability models of the vector autoregressive (VAR) type may be extended to capture the bull and bear patterns typical of many asset classes, including REITs. We find that nonlinearities are so deep that it is impossibile for a large family of VAR models to either produce similar portfolio weights or to yield realized, ex-post out-of-sample long-horizon portfolio performances that may compete with those typical of bull and bear models. A typical investor with intermediate risk aversion and a 5-year horizon ought to be ready to pay an annual fee of up to 5.7 % to have access to forecasts of REIT returns that take their bull and bear dynamics into account instead of simpler, linear forecast.     

Naturoids: From a dream to a paradox

The human ambition to reproduce natural objects and processes has a long history, and ranges from pure dreams to actual design: from Icarus's wings to modern-day robotics and bioengineering. The concept of naturoid has been introduced in the last decade or so, for referring to man's attempts to reproduce natural phenomena. The development of naturoids may be viewed as a special class of technological activity, distinct from the general class of technology. The concept of naturoid should be useful for methodological research aimed at finding possible common rules, potentialities and constraints characterizing the human effort to reproduce natural objects.Tacitly, many designers think that the continuing improvement of a naturoid consists in its ever-growing overlap with the natural instance, and that the holy grail, as it were, is the complete reconstruction of a natural object of process, from its external appearance to its inner workings. This paper tries to show that a naturoid is always the result of a reduction of the complexity of natural objects, due to an unavoidable multiple selection strategy. Nevertheless, the reproduction process implies that naturoids take on their own new complexity, resulting in a transfiguration of the natural exemplars and their performances, leading to a true innovation explosion. As a matter of fact, the core performances of contemporary naturoids improve, but, paradoxically, the more a naturoid develops, the further away it moves from its natural counterpart. Therefore, naturoids will more and more affect our relationships with advanced technologies and with nature, but in ways quite beyond our predictive capabilities.     

Optimal Size in the Waste Collection Sector

The purpose of this study is to analyze the cost structure of a sample of Italian wastecollection firms in order to assess economies of scale and density and, therefore, definethe optimal size of the firms. A total and a variable translog cost function were estimated using panel data for a sample of 30 firms operating at the provincial level over the period 1991–1995.The empirical evidence suggests that franchised monopoly, rather than side-by-sidecompetition, is the most efficient form of production organization in the waste collection industry. Further, the majority of firms are not operating at optimal scale.