Diagnostic tools in beta regression with varying dispersion

We consider the issue of performing residual and local influence analyses in beta regression models with varying dispersion, which are useful for modelling random variables that assume values in the standard unit interval. In such models, both the mean and the dispersion depend upon independent variables. We derive the appropriate matrices for assessing local influence on the parameter estimates under different perturbation schemes. An application using real data is presented and discussed.     

An evolutionary view of the infant-industry argument

As opposed to the conventional view of the infant-industry argument as a rationale for temporary trade-impairment measures, this paper submits an evolutionary view of the argument, founded on insights from catch-up experience, as a long-run collective-learning enterprise providing a rationale for trade creation. This is operationalised by introducing system, institutional and policy learning, in addition to firm-specific learning, to complete a triad that unfolds within a multi-phased dynamic sequence eventually leading to infant-industry emergence. We factor-in radical uncertainty, complexity and path dependence, while spelling out positive and normative implications. Crucial interphase transition junctures are identified with emphasis on generative, as opposed to functional, properties.     

Approximations in power transmission planning: implications for the cost and performance of renewable portfolio standards

Renewable portfolio standards (RPSs) are popular market-based mechanisms for promoting development of renewable power generation. However, they are usually implemented without considering the capabilities and cost of transmission infrastructure. We use single- and multi-stage planning approaches to find cost-effective transmission and generation investments to meet single and multi-year RPS goals, respectively. Using a six-node network and assuming a linearized DC power flow, we examine how the lumpy nature of network reinforcements and Kirchhoff’s Voltage Law can affect the performance of RPSs. First, we show how simplified planning approaches that ignore transmission constraints, transmission lumpiness, or Kirchhoff’s voltage law yield distorted estimates of the type and location of infrastructure, as well as inaccurate compliance costs to meet the renewable goals. Second, we illustrate how lumpy transmission investments and Kirchhoff’s voltage law result in compliance costs that are nonconvex with respect to the RPS targets, in the sense that the marginal costs of meeting the RPS may decrease rather than increase as the target is raised. Thus, the value of renewable energy certificates (RECs) also depends on the network topology, as does the amount of noncompliance with the RPS, if noncompliance is penalized but not prohibited. Finally, we use a multi-stage planning model to determine the optimal generation and transmission infrastructure for RPS designs that set multiyear goals. We find that the optimal infrastructure to meet RPS policies that are enforced year-by-year differ from the optimal infrastructure if banking and borrowing is allowed in the REC market.     

The econometric challenge to Keynes: arguments and contradictions in the early debates about a late issue *

The paper investigates the discussions between Keynesians and ‘reconcilers’ about the interpretation of the ‘General Theory’, and the effect of the transformation of economics during the thirties as the outcome of that discussion. It highlights the contribution of some of the first econometriians, who argued for a new view of economics as an exact science based on mechanical models and mathematically defined theories, while supporting planning rather than the indirect steering devices suggested by Keynes.

The inroduction of this type of mathematical models in the framework of Keynesian macro–policies is related to two major events: the Oxford meeting of the Econometric Society in which the IS-LM model emerged, and the Cambridge meeting dedicated to the discussion of Tinbergen's work on business cycles.

The framework, antecedents and consequences of Keynes-Tinbergen debate on the role of econometrics is here assessed on the basis of unpublished documental evidence. Although most of the econometricians took sides with tinbergen against Keynes's scepticism on the use of formal models and simple representations in macroeconomics, several of them, including the more influential of the then young mathematically inclined economists, shared some of the basic elements of the critique. These discussions among Frisch, Tinbergen, Lange, Divisia, Roos, Marschak and others are reviewed in the paper and related to the evolution of the Cambridge group itself.     

Self-selection in the market of teachers

Public school teachers are usually paid according to centralized earning schedules, in which their income depends mainly on experience. By contrast, in private schools, there is high wage dispersion, and salaries correspond mainly to teachers’ performance. That dichotomous labour regulation encourages teachers with better unobservable skills to self-select into private schools because the likelihood of earning higher wages is higher than in public schools. The other side of the coin is the self-selection of ‘bad’ teachers into public schools. Using a representative sample of Chilean teachers, we estimate a two-sector Roy model to test self-selection. We find evidence of negative self-selection of teachers into public schools.     

Income-contingent loan with personal insurance policy: an empirical assessment using Spanish data

We propose an Income Contingent Loan that defers the payment of university fees and charges a fixed proportion of gross income for 30 years or until the debt is written off. Under these conditions, some participants in the scheme will have insufficient income to fully repay their loan balances. The deficit will be covered by the taxpayer, who ultimately bears the risk of investing in higher education. We then propose to transfer this risk to the student by adding a mandatory personal insurance policy to the individual loan. We calculate the premium required for the system to break even in Spain when everybody pays the insurance cost. Alternatively, the payment of the premium can be deferred, adding it to total debt. Then, some participants in the scheme will have insufficient income to even pay the insurance cost, and the premium needs to be increased to maintain the sustainability of the program. Although these mechanisms imply redistribution towards borrowers who end up being low earners, we show that middle-income individuals contribute a higher proportion of their incomes to covering for those unable to repay. To provide the system with more internal progressivity, we propose to impose a minimum period of repayment.     

User behaviour in QR mobile payment system: the QR Payment Acceptance Model

The main goal of our research is to analyse users’ acceptance of Quick response (QR) code mobile payment systems, considering the population's widespread use of mobile devices. A comprehensive review of the scientific literature has justified the development of a behavioural model that explains intention to use of mobile payment via QR. To this end, the authors have carried out a study through an online survey to a national panel of Internet users. The results show that attitude, innovation and subjective norms are determinants of the future intention to use this technology. The conclusions and implications for management provide alternatives for companies to promote this new business by means of the new technical developments. This paper is a pioneer study of intention to use with mobile payment via QR. Classic variables from the Technology Acceptance Model (TAM), as well as variables from other recent studies, were used as models for this research (compatibility, security, personal innovation and individual mobility).     

Convergence in the EU

The EU has long viewed economic and institutional convergence as important goals, but the results thus far have been decidedly mixed, and there remain several open questions: How exactly should convergence be defined? How much convergence is necessary? What steps can be taken to improve convergence in the EU, and how can success be defined? Finally, how much convergence can be achieved by improving the economic performance in underperforming regions, and how can convergence in the form of harmonisation towards lower welfare levels be avoided?     

Understanding Pay Satisfaction: Effects of Supervisor Ethical Leadership on Job Motivating Potential Influence

Traditionally, research focused on determining the causes of employee pay satisfaction has investigated the influence of job-related inputs, both extrinsic and intrinsic to the job itself. Together with these inputs, pay-related fairness issues have played an important role in explaining the phenomenon. However, few studies consider the factors linked to fairness issues, such as ethical leadership. Because ethical leadership necessarily entails the concept of fairness, it seemingly should have a positive effect. Furthermore, because the presence of supervisor ethical leadership (SEL) offers strong chances for employees to achieve moral accomplishments and excel in the practice of their jobs, SEL should enhance the effects of intrinsic job inputs. Whereas high job motivating potential (JMP) makes it easier for employees be self-actualized, moral fulfillment is necessary for them to obtain authentic self-actualization at work and minimize the impact of pay deficiencies. Along with SEL, JMP should be shaped to increase positive experiences of job meaningfulness, responsibility for job outcomes, and knowledge of results at work, which can lead to enjoyment in doing the job in itself, not just for compensation-related motives. Hierarchical regression analysis with a sample of 151 employees in a diverse set of Spanish organizations supports the direct effects of JMP and SEL and shows that higher levels of SEL increase the positive effects of JMP on pay satisfaction. The practical implications of these findings and further research directions conclude this article.     

Assessing primary healthcare services quality in Spain: managers vs. patients perceptions

This paper measures the perceptions of the service quality by both the users and the health centre managers in Spain. With this information, it was possible to calculate the size of Gap-6, proposed by Lewis of discrepancy among the customers' perceptions and the perceptions of health centre managers. Using factor analysis and multiple regressions, significant associations were found between the service quality dimensions and patient satisfaction. Implications and future research issues are discussed.