Price dynamics and shake-outs in electronic markets

This paper presents a model that explains the recent evolution of e-commerce, where over time, prices can increase if no exit occurs, or decrease, if exit occurs. In the model there is uncertainty about the firms' costs, because the technology is new, and consumers face a switching cost, because it is easier to observe the current price of a previous supplier, than the price of other firms

Higher Education attainment : the case of intergenerational transmission of education in Portugal

The lack of formal education and competences of the Portuguese workers is one of the biggest problems of the country. This lack is disappearing as quickly as desired and the young generations still lag far behind those in other OECD countries. This paper studies the intergenerational transmission of education achievement, in particular higher education completion, seeking to determine the influence on future attainment of parents’ education and labor market conditions while the child was growing up. We conclude that the education of the parents is very important, even if it is only one of them that has it. This influence seems not to be independent of the gender of the parent who has it. The fact that the parents face unemployment has a negative effect on the educational achievement of the child. Females generally perform better than males, but there are exceptions. For instance, it is significantly lower if the father has low education and the mother has secondary or higher education.N/

Price dynamics and shake-outs in electronic markets.

This paper presents a model that explains the recent evolution of e-commerce, where over time, prices can increase if no exit occurs, or decrease, if exit occurs. In the model there is uncertainty about the firms' costs, because the technology is new, and consumers face a switching cost, because it is easier to observe the current price of a previous supplier, than the price of other firms.

PRICE DYNAMICS AND SHAKE-OUTS IN ELECTRONIC MARKETS

This paper presents a model that explains the recent evolution of e-commerce, where over time, prices can increase if no exit occurs, or decrease, if exit occurs. In the model there is uncertainty about the firms’ costs, because the technology is new, and consumers face a switching cost, because it is easier to observe the current price of a previous supplier, than the price of other firms.

Electronic Commerce, Consumer Search and Retailing Cost Reduction

This paper explains four things in a unified way. First, how e-commerce can generate price equilibria where physical shops either compete with virtual shops for consumers with Internet access, or alternatively, sell only to consumers with no Internet access. Second, how these price equilibria might involve price dispersion on-line. Third, why prices may be higher on-line. Fourth, why established firms can, but need not, be more reluctant than newly created firm to adopt e-commerce. For this purpose we develop a model where e-commerce reduces consumers' search costs, involves trade-offs for consumers, and reduces retailing costs.Comment: 29th TPRC Conference, 200

Intergenerational Transmission of Education: An Alert to Empirical Implementation

The intergenerational transmission of education is certainly a problem that continues to challenge most countries. The level of education that an individual rises to is linked to the education level(s) of her/his parents. This note serves as an alert to researchers undertaking empirical investigation into how the parents' education should be considered with regard to the child's. Using Portuguese data we conclude that the parents should be viewed as a unit (i.e. as a couple), and we should examine all of the different education combinations, avoiding the temptation to aggregate them in larger categories.transmission of education, human capital, parent’s education

Does Education Reduce Wage Inequality? Quantile Regressions Evidence from Fifteen European Countries

We address the impact of education upon wage inequality by drawing on evidence from fifteen European countries, during a period ranging between 1980 and 1995. We focus on within-educational-levels wage inequality by estimating quantile regressions of Mincer equations and analysing the differences in returns to education across the wage distribution and across time. Four different patterns emerge: 1) a positive and increasing contribution of education upon within-levels wage inequality the case of Portugal; 2) a positive but stable role of education in terms of inequality Austria, Finland, France, Ireland, Netherlands, Norway, Spain, Sweden, Switzerland, UK; 3) a neutral role Denmark and Italy; and 4) a negative impact Germany and Greece. We thus find that in most countries dispersion in earnings increases with educational levels and that education is a risky investment. These results suggest a positive interaction between schooling and ability with respect to earnings.Returns to Education, Earnings Inequality, Quantile Regressions, Ability, Education Systems, Labour-Market Institutions.

Phase Diagram, Scalar-Pseudoscalar Meson Behavior and Restoration of Symmetries in (2+1) Polyakov-Nambu-Jona-Lasinio Model

We explore the phase diagram and the modification of mesonic observables in a hot and dense medium using the (2+1) Polyakov-Nambu-Jona-Lasinio model. We present the phase diagram in the ($T,\,\mu_B$)-plane, with its isentropic trajectories, paying special attention to the chiral critical end point (CEP). Chiral and deconfinement transitions are examined. The modifications of mesonic observables in the medium are explored as a tool to analyze the effective restoration of chiral symmetry for different regions of the phase diagram. It is shown that the meson masses, namely that of the kaons, change abruptly near the CEP, which can be relevant for its experimental search.Comment: 25 pages, 11 figures, 2 table