A new perspective on dynamic portfolio policies

The paper starts from the preceeding paper by L. Peccati in this issue. The original model is enriched with corporate taxes and reinvestment possibilities.The decomposition of NPV is used to study an optimal dynamic reinvestment policy.A generalization of the model is outlined and a numerical example is provided in an appendix.     

Rovina,assicurazione e scambi di attività finanziarie

Viene fornita la soluzione in forma chiusa di un problema di ottimizzazione dinamica stocastica, consistente nella scelta ottimale tra consumo e risparmio e nella composizione ottimale di portafoglio, in presenza di possibilità di rovina assicurabile.Dal punto di vista della teoria assicurativa, il lavoro amplia alcuni modelli recenti sull'assicurazione ottima, poiché segue un approccio del tipo «equilibrio generale» con due tipi di agenti eterogenei anziché parziale.Dal punto di vista della teoria di portafoglio, esso si discosta dai modelli tradizionali perché giustifica l'esistenza di scambi sui mercati finanziari e ne spiega l'entità.In questo senso il lavoro amplia alcuni contributi recenti sui flussi di capitale includendovi la possibilità di rovina e l'esistenza di una assicurazione contro di essa.

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Summary This paper provides an analytical solution for a multiperiod stochastic optimization problem, namely consumption and portfolio choice with partial risk insurance.An opposed to some recent optimal-insurance models a general-equilibrium approach —with two classes of heterogeneous agents—is adopted.Furthermore, the paper departs from traditional portfolio analysis in that it emphasises the dynamics of financial markets and justifies the existence of market trading.In this sense, it widens some recent general-equilibrium results on capital flows by including bankruptcy risk and insurance.

     

Mortality risks,education and child labor

In this paper, we investigate the role of young adult mortality on child labor and educational decisions. We argue that mortality risks are a major source of risks in returns to education in developing countries. We show that, in the absence of appropriate insurance mechanisms, the level of child labor is inefficient, but it can be too high or too low. It is too high when parents are not very altruistic and anticipate positive transfers from their children in the future. Uncertain returns to education, endogenous mortality or imperfect capital markets unambiguously increase child labor. When the level of child labor is inefficiently high, we also show that a cash transfer conditional on child's schooling can always restore efficiency regarding child labor.     

The Role of Socioeconomic,Demographic and Behavioural Factors in Explaining the High Rates of Obesity Among Indigenous Australians

Indigenous Australians have one of the highest rates of obesity in Australia. However, little is known about the factors that are linked to obesity for Indigenous Australians. The purpose of this paper is to enhance this understanding by examining the role of behavioural characteristics, demographics and socioeconomic status in explaining Indigenous Australians' obesity rates. This study finds that the key factors that impact on the probability of being obese relate to Indigenous Australians' wealth, engagement in physical activity and diet. The factors associated with obesity also vary for Indigenous men and women and for the Indigenous population living in remote and non‐remote communities. The results identify potential target groups for policy aimed at reducing the prevalence of obesity for Indigenous Australians.     

Information Use in New Product Development: An Initial Exploratory Empirical Investigation in the Chemical Industry*

In‐depth interviews with product developers and product development software providers in a previous qualitative phase of research uncovered eight general types of information that are used across the new product development process (strategic, project management, financial, market and customer, wants and needs, technical, competitor, and regulatory information) and three general approaches to managing information in the process (project‐centric, functionally oriented, and fully distributed). This paper presents a second phase of research trying to understand the role that managing knowledge and information plays in developing new products and achieving NPD success. This research phase empirically investigates use of the eight types of information across three general phases of the NPD process in the chemical industry using 81 mail survey responses from marketing and new product development professionals. Respondents were asked to indicate the degree to which each of the eight information types was used in each of the following general phases of new product development: the fuzzy front end, development, and testing and launch. The respondents also provided information on new product development success, information management system sophistication, and innovation strategy. This research makes several contributions to new knowledge. First, this research suggests that information management in product development is even more complex than initially posited in Zahay et al. (2004) , with each of the eight types of information identified being used in each of the three phases of development. Unexpectedly, for all but one type of information use is higher in later stages of the NPD process, even though use of several kinds of information early in the project is associated with increased success. Thus, managers may need to encourage teams to start gathering information from outside the firm earlier than is currently the norm. Second, the results suggest that more sophisticated information management systems are indeed associated with increased use of various different types of information, as expected. Third, more sophisticated information management systems are more highly associated with success than less sophisticated information management systems. These results are important, as most new product development information management systems are limited in their ability to handle complex and non‐quantitative information such as customer wants and needs, as well as strategic, competitor, and regulatory information. However, being able to transmit information on these issues is associated with increased firm performance and project success from these data. Thus, firms need to figure out how to improve their ability to manage and use non‐quantitative information more effectively.     

Deployment of high-speed broadband infrastructures during the economic crisis. The case of Xarxa Oberta

The deployment of fibre based Next Generation Access Networks (NGANs) entails a crisis dilemma. During crisis, public administrations are eager to actively impulse investment in NGANs since the deployment of these networks may increase productivity in the long run and promote economic recovery in the short run. However, the crisis has reduced the access to the credit market and has increased the fiscal deficit. Consequently, the resources of the public sector to invest have been severely limited. Thus, it is crucial to analyse how the public investment plans in NGANs should be designed and implemented during bad times, under scarcity of public resources. The article proposes some guidelines for the design and implementation of effective and affordable public projects for the deployment of NGANs. These guidelines are illustrated by discussing the Xarxa Oberta case, a project for the deployment of a NGAN in Catalonia (Spain).     

Household Management Systems and Women’s Decision Making Within the Family in Europe

ABSTRACT

This paper analyzes household management systems and their effect on intrahousehold gender differences in decision making in thirty European countries. The study considers five domains that reflect two types of decisions – time-consuming and frequent decisions like everyday shopping versus infrequent but important decisions like borrowing money or purchasing consumer durables. In time-consuming activities, the gender gap favors women in each system; for infrequent decisions, the gender gap is dependent on the way money is managed and the biggest gap is found in systems where resources are not pooled. This paper also investigates the role of distribution factors in shaping decision-making behavior. For time-consuming decisions, the higher the income (and education) of the woman compared to the man, the less likely she is to make the decisions. For infrequent activities, the higher the income of the woman compared to the man, the more likely she is to make the decisions.     

When will customers care about service failures that happened to strangers? The role of personal similarity and regulatory focus and its implication on service evaluation

This paper examines an interesting research question: how does a service failure that happen to a stranger customer influence an observing customer's service evaluation? Drawing on the defensive attribution theory and regulatory focus theory, we argue that an observing customer will attribute more (vs. less) blame to the company if the customer involved in the undesirable incident is personally similar (vs. not similar) to him/her. These attributions, in turn, will influence the observing customers to form a negative evaluation on service quality of the company. More importantly, a prevention-focused tendency will intensify the negative impact of personal similarity on service evaluation. Results from two experiments confirmed the hypotheses.     

Distributive impact of structural change: Does environmental degradation matter?

Vulnerability to reduction of natural capital depends on defensive substitution possibilities that, in turn, are affected by the availability of other productive factors. However in several developing countries asset distribution tends to be highly skewed. Taking into account these elements, this paper proposes a model considering an economy polarized into two classes (the rich and the poor) and characterized by the following stylized facts: income and productivity of the rural poor is highly dependent on natural resources; labour remuneration in rural sector represents the opportunity cost for wage labour; the rich can partially substitute natural capital with physical capital and wage labour. In this context, agents differ for feed back mechanisms and interactions between their choices of production and environmental dynamics. Moreover environmental depletion may trigger economic transition, but the structural change is likely to result regressive.     

A REVIEW AND COMPARISON OF TESTS OF CROSS-SECTION INDEPENDENCE IN PANELS

Abstract.  In this paper we review and compare diagnostic tests of cross-section independence in the disturbances of panel regression models. We examine tests based on the sample pairwise correlation coefficient or on its transformations, and tests based on the theory of spacings. The ultimate goal is to shed some light on the appropriate use of existing diagnostic tests for cross-equation error correlation. Our discussion is supported by means of a set of Monte Carlo experiments and a small empirical study on health. Results show that tests based on the average of pairwise correlation coefficients work well when the alternative hypothesis is a factor model with non-zero mean loadings. Tests based on spacings are powerful in identifying various forms of strong cross-section dependence, but have low power when they are used to capture spatial correlation.