GMM estimation of a structural demand model for yogurt and the effects of the introduction of new brands

The demand structure for yogurt is assumed to be properly described by a one level nested logit model that is applied to aggregate market data. Given the presence of endogenous regressors, suitably lagged endogenous variables (Arellano and Bover in J Econom 68:29–51, 1995; Blundell and Bond in J Econom 87:115–143, 1998) are proposed as instrumental variables. The validity of this set of instruments is discussed and price elasticities and marginal costs are recovered from the demand estimates. Total welfare gains associated to the introduction of two new brands by the same manufacturer are finally computed. Prices and profits decreased and total welfare increased.     

Investing in a relationship

A principal can make an investment anticipating a repeated relationship with an agent, but the agent may appropriate the returns through ex post bargaining. I study how this holdup problem and efficiency depend on the contracting environment. When investment returns are observable, informal contracts ex post can be more efficient than formal contracts, as they induce higher investment ex ante: the principal invests not only to generate direct returns, but also to improve relational incentives. Unobservability of returns increases the principal's ability to appropriate the returns but reduces her ability to improve incentives. The optimal information structure depends on bargaining power.     

The conservation against development paradigm in protected areas: Valuation of ecosystem services in the Doñana social-ecological system (southwestern Spain)

The ecosystems of the Doñana social-ecological system (southwestern Spain) provide numerous ecosystem services to society. We valued the most important ecosystem services through a market-based approach, revealed-preference and stated-preference methods to assess the conservation effectiveness of the Doñana Protected Area, with consideration of existing human activities in surrounding lands. We also analysed the spatial distribution of the ecosystem services beneficiaries and the scale of their related markets. We found a clear trade-off between the local and global market values of ecosystem services because landscape management outside of the Doñana Protected Area promotes the provision of ecosystem services associated with international markets. Our results suggest that a conservation against development model occurs in the Doñana social-ecological system, in which land use intensification takes place outside of the Protected Area borders as a result of promoting marketed ecosystem services, while biodiversity conservation is the main activity inside the Protected Area. We conclude that protected areas should be part of a larger-scale, adaptive landscape management strategy in which conservation planning should be the focal element in coordinating sectoral policies in the context of social-ecological systems.     

Survival of Japanese subsidiaries in the Middle East and North Africa

This paper considers factors affecting survival of foreign subsidiaries in the context of Japanese foreign equity ventures in the Middle East and North Africa (MENA). Three new institutional variables, economic distance, economic freedom distance and subsidiary density, are examined as determinants of survival while controlling for other determinants previously established in the literature. The findings support our hypotheses. We found that economic distance and economic freedom distance exhibit significant positive and negative relationships respectively with the survival of Japanese FDI in the MENA region, and moderate positive relationship between subsidiary density and subsidiary survival.     

Obesity and happiness

This article provides insight on the relationship between individual obesity and happiness levels. Using the latest available panel data from Germany German Socio-Economic Panel (GSOEP), UK British Household Panel Survey (BHPS), and Australia Household, Income and Labour Dynamics in Australia (HILDA), we examine whether there is statistical evidence on the impact of overweight on subjective well-being. Instrumental Variable (IV) analysis is utilized under the presence of endogeneity, stemming from several explanatory variables. Results indicate that in all three countries obesity has a negative effect on the subjective well-being of individuals. The results also have important implications for the effect of other socio-demographic, economic and individual characteristics on well-being.     

Diversification strategies and scope economies: evidence from a sample of Italian regional bus transport providers

A growing number of Local Public Transport (LPT) companies diversify their production lines by providing a large set of services. We investigate the cost structure of a sample of LPT companies operating in Italy and assess the presence and the magnitude of scope economies. We split the whole sample of firms according to their diversification strategy: private firms, mainly diversifying in competitive transport related services and public firms providing nontransport services in regulated markets. Scope economies appear sizeable for both groups but higher for firms pursuing a transport related strategy, suggesting caution in the multiutility development pursued by public LPT firms in Italy.     

Considerazioni sulla reciprocita' nei problemi di ottimo

In questo lavoro si stabiliscono alcune condizioni geometriche sull' immagine della funzione di cui si ricerca l'estremo e del vincolo per l'equivalenza tra problemi reciproci di estremo.

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In economics it is sometimes of interest to study constrained extremum problems. We give geometric conditions on the image set of the function of which we search the extremum and of the constrain for the equivalence between some reciprocal extremum problems.

     

R&D networks and innovation: decentralised product development in multinational enterprises

This paper documents the ways in which overseas R&D in MNEs now plays roles in what are innovative new approaches to innovation itself. Networks of laboratories are seen as supporting both the short-term and long-term competitive evolution of the MNE group's globally-effective product innovation.
In terms of the immediate commercial application of new products for global markets it is argued that product development labs work within creative overseas subsidiaries in MNEs. These aim to derive variants of the new product that fully meet the distinctive needs of each key regional market.
Another separate network of decentralised MNE labs carry out precompetitive (basic or applied) research, embodying particular areas of technological comparative advantage of their host countries. This network of labs therefore provides inputs into a centrally-articulated programme whose objective is to provide the basis of the longer-term technological evolution of the MNE, by upgrading the core knowledge from which future generations of innovative products can emerge.