Infrastructure investment and optimal access regulation in the different stages of telecommunications market liberalization

In this paper, we compare the optimal access regulation under three different market configurations that approximate the different stages of telecommunications market liberalization. We show that in the first stage of market liberalization the regulator has to balance between static efficiency and investment and that the optimal access price may be above marginal cost. In the second stage, two different outcomes are possible. If entrants tend to underinvest, the regulator balances between static efficiency and investment. If entrants tend to overinvest, the regulator sets the access price as low as possible in order to prevent or limit infrastructure duplication. Interestingly, we find that in the third stage of market liberalization the regulator may decide to promote infrastructure duplication and to set the access price above the price in the first stage of market liberalization, even if telecommunications network operators tend to overinvest in infrastructure duplication.     

Robustness and sensitivity analysis of risk measurement procedures

Measuring the risk of a financial portfolio involves two steps: estimating the loss distribution of the portfolio from available observations and computing a ‘risk measure’ that summarizes the risk of the portfolio. We define the notion of ‘risk measurement procedure’, which includes both of these steps, and introduce a rigorous framework for studying the robustness of risk measurement procedures and their sensitivity to changes in the data set. Our results point to a conflict between the subadditivity and robustness of risk measurement procedures and show that the same risk measure may exhibit quite different sensitivities depending on the estimation procedure used. Our results illustrate, in particular, that using recently proposed risk measures such as CVaR/expected shortfall leads to a less robust risk measurement procedure than historical Value-at-Risk. We also propose alternative risk measurement procedures that possess the robustness property.     

The short-term timing of initial public offerings

This paper examines the effect of stock market conditions on the waiting time of initial public offering (IPO) candidates, from the date firms file a registration statement with the Securities and Exchange Commission (SEC) to the effective IPO date. I find that issuers are going public faster when time-varying stock market valuations are high, and when time-varying market returns and time-varying market volatility are low. The volatility effect is not driven by regulatory delays consecutive to changes in the terms of the offers during the IPO process. Taken together, these results indicate that firms use a short-term market timing strategy when deciding the right time to go public and are consistent with a real option interpretation of IPO timing.     

Sources of Business Cycles in a Low Income Country

We examine the role of global and domestic shocks in driving macroeconomic fluctuations for Ghana. We are able to study the impact of exogenous shocks, including productivity, credit supply and commodity price shocks. We identify the shocks using a combination of sign and recursive restrictions within Bayesian vector autoregressive models. As a benchmark we provide results for South Africa to document the difference between two economies with similar structures but at different stages of development. We find that global shocks play a more dominant role in South Africa than in Ghana. These shocks operate through three channels: trade, credit and commodity prices.     

Parking enforcement and travel demand management

This article deals with on-street, non-free parking policy. The aim is to show how parking meter violation challenges the travel demand management policy. The literature widely admits that only the increase in the enforcement effort both deters drivers from offending and contribute to moderating car use. Nevertheless, the link between parking non-compliance, enforcement effort and travel demand has never been examined. We show that when parking meter violation behaviour, fine level choice, modal split and travel demand are connected, the fine increase paradoxically supports car use and encourages parking violation in the case of large parking congestion in particular.     

Trade liberalization and intersectoral labor movements

This paper examines the impact of trade liberalization episodes on movements of labor across sectors. The aim is to assess empirically whether increased trade openness leads to increased structural change and, if so, to what extent. Results for a set of 25 liberalization episodes suggest weakly negative effects of liberalization on the extent of intersectoral labor shifts at the economy-wide 1-digit level of disaggregation. We do uncover increased sectoral change after liberalization at the 3-digit level within manufacturing, although the estimated effects are statistically weak and small in magnitude. The effects of liberalization on labor shifts differ across individual countries, in a way related to the scope and depth of reforms.     

Featuring Capability: How Carmakers Organize to Deploy Innovative Features across Products

Innovative features such as hands‐free car entry and ignition systems, stop‐start devices, telematics systems, and panoramic windshields are increasingly important to carmakers' innovation strategies. However, while product‐centric innovation has been extensively studied, there is less insight into the way companies implement their feature‐innovation strategies. The capability to explore, integrate, and deploy such attractive features is a critical dynamic capability; it allows carmakers to refresh their products, develop their competences, and maintain the efficiency of their traditional new product development. This research investigates the structures and processes of feature innovation in the automotive industry. It is based on a global investigation encompassing 9 generalist carmakers and 26 cases of feature innovation. The results show a clear trend, over the past decade, toward a structure of autonomous “advanced engineering” units and processes that are responsible for exploring innovative features and transferring them to multiple products. This paper details the key attributes of these units, and the role they play along the multiproduct learning cycle. Supplementing this structural analysis, the paper also identifies the coordination patterns between exploration and new product development activities. These results provide industry‐level insights into the way firms organize their feature‐innovation capability, and bring empirical elements to the ambidexterity literature.