Education mismatch and qualification mismatch: monetary and non-monetary consequences for workers

Using Spanish data from European Union Household Panel Survey corresponding to 2001, we find that the incidence and the consequences, monetary and non-monetary, are different for the job-worker qualification and education mismatches. In fact, only 36% of workers have the same type of fit under both criterions of classification. Additionally, the qualification mismatches have worse consequences for workers than education mismatches. Specifically, the monetary consequences are neutrals for overqualified workers, but negatives for underqualified workers, while the wage of educational mismatched workers is not significantly different of those who have similar characteristics and are accurately match in terms of formal education. However, the overeducated workers earn higher wages than their well-matched co-workers and the wage penalization for one year of undereducation is lower than the reward for one year of required education. On the other hand, the analysis of the non-monetary consequences, by means of job satisfaction, shows that the qualification mismatched workers have lower probability of being completely satisfied than those who are accurately match in terms of qualification, while the effects of education mismatch situations on job satisfaction are no significant. However, among similar jobs, the years of educational mismatch can have an effect even positive on job satisfaction

Can job/worker mismatches help to explain wages and job satisfaction differences among comparable workers?

The relevance of skill job-worker mismatches is analized along with that of education mismatch on Spanish data from the European Community Household Panel (ECHP) survey for the year 2001. Statistical analysis for the prevalence of both types of mismatches, as well as econometric analysis of their wage and job satisfaction consequences has been carried out. Three main findings emerge. First, the degree of statistical association between education and skill mismatches is rather low in the Spanish labour market, suggesting that education mismatch is a rather poor proxy for skill mismatch. Second, both skill and education mismatches appear to have separate, negative effects on wages although skill mismatches show stronger influences. Third, skill mismatches severely reduce workers job satisfaction while the effects of education mismatch weakened when skill mismatches are accounted for. Consequently, skill mismatch is found to be a relevant determinant of wage, as well as a stronger predictor of workers’ utility, than education mismatch

On the local existence of maximal slicings in spherically symmetric spacetimes

In this talk we show that any spherically symmetric spacetime admits locally a maximal spacelike slicing. The above condition is reduced to solve a decoupled system of first order quasi-linear partial differential equations. The solution may be accomplished analytical or numerically. We provide a general procedure to construct such maximal slicings.Comment: 4 pages. Accepted for publication in Journal of Physics: Conference Series, Proceedings of the Spanish Relativity Meeting ERE200

Positioning systems in Minkowski space-time: Bifurcation problem and observational data

In the framework of relativistic positioning systems in Minkowski space-time, the determination of the inertial coordinates of a user involves the {\em bifurcation problem} (which is the indeterminate location of a pair of different events receiving the same emission coordinates). To solve it, in addition to the user emission coordinates and the emitter positions in inertial coordinates, it may happen that the user needs to know {\em independently} the orientation of its emission coordinates. Assuming that the user may observe the relative positions of the four emitters on its celestial sphere, an observational rule to determine this orientation is presented. The bifurcation problem is thus solved by applying this observational rule, and consequently, {\em all} of the parameters in the general expression of the coordinate transformation from emission coordinates to inertial ones may be computed from the data received by the user of the relativistic positioning system.Comment: 10 pages, 7 figures. The version published in PRD contains a misprint in the caption of Figure 3, which is here amende

Education and competence mismatches: job satisfaction consequences for workers

The accuracy of the match in the job-worker pairing is analyzed both in terms of education and in terms of qualification using Spanish data from the 2001 wave of the European Community Household Panel (ECHP). Regarding the incidence of mismatch situations, the results suggest that the education match appears to be a rather poor indicator for the qualification match. In addition, ordered discrete choice models reveal that they have different consequences in terms of job satisfaction as well

(Liquid + liquid) equilibria of polymer-salt aqueous two-phase systems for laccase partitioning : UCON 50-HB-5100 with potassium citrate and (sodium or potassium) formate at 23 ºC

Aqueous two-phase systems (ATPS) are recognized as very suitable techniques for the recovery of target solutes in biological applications. Three new phase diagrams of (UCON 50-HB-5100 + potassium citrate + water), (UCON 50-HB-5100 + sodium formate + water), and (UCON 50-HB-5100 + potassium formate + water) systems were measured at 23 C. The binodal curves were successfully described using the empirical equation suggested by Merchuk and co-workers. The reliability of the tie-line data experimentally determined was evaluated using the equations reported by Othmer–Tobias and Bancroft and satisfactory linearity was obtained for all ATPS. Among the salts studied, potassium citrate proved to be the most effective in ATPS formation, providing the largest heterogeneous region. Besides, the effect of both anions and cations in the size of the heterogeneous region and in the slope of the tie-lines has been compared. For the same salts and conditions, the heterogeneous region using UCON as the phase-forming polymer is larger than using polyethylene glycol. Furthermore, laccase partition in the UCON-salt ATPS was studied and it was found that in all cases enzyme partition occurred preferably to the bottom phase (salt-rich phase). Laccase concentration in the salt-rich phase was approximately 2-fold that in the top phase, thus UCON-salt ATPS can be a suitable biphasic system for laccase extraction.This work is supported by project PEst-C/EQB/LA0020/2011, financed by FEDER through COMPETE - Programa Operacional Factores de Competitividade and by FCT - Fundacao para a Ciencia e a Tecnologia, Portugal. SCS and OR acknowledge financial support of FCT (Ph.D. grant SFRH/BD/43439/2008) and Programme Ciencia 2007 (FCT), respectively. EL acknowledges financial support of Ministerio de Educacion y Ciencia of Spain (doctoral fellowship EX2009-0404

The consequences on job satisfaction of job‐worker educational and skill mismatches in the spanish labour market: a panel analysis

The effects of job-worker mismatches on job satisfaction are examined using the eight waves (1994-2001) of Spanish data taken from the European Community Household Panel (ECHP). The impacts of both educational and skill mismatches are estimated considering unobserved heterogeneity, state dependence and attrition bias. Dynamic analysis shows that skill mismatches emerge as a much better predictor of job satisfaction than educational mismatches as the effects of the latter are related to unobserved heterogeneity among workers. Moreover, the current level of job satisfaction appears to be influenced by workers’ previous job perceptions, suggesting a dynamic structure for job satisfaction.We would like to thank the Spanish Ministry of Education and Science for their support through the SEJ2004-07924 research project, and the SEJ2005-08783-C04 02/ECON project contract, which has been co-financed by the European Regional Development Fund

El desajuste educativo en el mercado de trabajo de EE.UU, Canadá, Hong Kong, Alemania, Reino Unido, Holanda, Portugal y España

El desajuste entre las competencias en capital humano que posee la oferta y que requiere la demanda de trabajo en una economía generan efectos negativos tanto a nivel micro como macroeconómico. Esto justifica la importancia de realizar un recorrido por la literatura empírica relativa a la incidencia de tal desajuste a nivel internacional (EE.UU, Canadá, Hong Kong, Alemania, Reino Unido, Holanda, Portugal y España). Adicionalmente, mediante el Panel de Hogares de la Unión Europea, aportamos la medida del fenómeno para la mayor serie temporal y más actualizada existente en la literatura española, de 1994 a 1998. Para ello, empleamos dos procedimientos, el modal y el subjetivo

Positioning systems in Minkowski space-time: from emission to inertial coordinates

The coordinate transformation between emission coordinates and inertial coordinates in Minkowski space-time is obtained for arbitrary configurations of the emitters. It appears that a positioning system always generates two different coordinate domains, namely, the front and the back emission coordinate domains. For both domains, the corresponding covariant expression of the transformation is explicitly given in terms of the emitter world-lines. This task requires the notion of orientation of an emitter configuration. The orientation is shown to be computable from the emission coordinates for the users of a `central' region of the front emission coordinate domain. Other space-time regions associated with the emission coordinates are also outlined.Comment: 20 pages; 1 figur

The effect of salts on the liquid–liquid phase equilibria of PEG600 + salt aqueous two-phase systems

Six new ATPSs were prepared by combining polyethylene glycol PEG600 with potassium citrate, dipotassium hydrogen phosphate, sodium formate, potassium formate, sodium sulfate, and lithium sulfate. Complete phase diagrams, including the binodal curve and three tie-lines, were determined at 23 °C. The experimental data obtained for the binodal curve were successfully adjusted to the Merchuk equation, and the reliability of tie-line data was confirmed using the equations suggested by Othmer–Tobias and Bancroft. The ability of each ion to induce ATPS formation was investigated. Na+ proved to be more effective in ATPS formation than K+ and Li+. For potassium salts, the order observed for the effectiveness of the anions was: HPO42– > C6H5O73– > HCO2–. Regarding the sodium salts, it was found that SO42– is clearly more effective than HCO2–. The position of the ions in the Hofmeister series and their free energy of hydration (ΔGhyd) were used to explain the ability of the ions to induce PEG salting-out. Furthermore, the effective excluded volume (EEV) of the salts was determined and the following order was found: Na2SO4 > K2HPO4 > Li2SO4 > K3C6H5O7 > NaCHO2 > KCHO2. Similar order was obtained when analyzing the size of the heterogeneous regions, suggesting the practical use of EEV as a comparison parameter between different ATPSs.This work is partially supported by project PEst-C/EQB/LA0020/2011, financed by FEDER through COMPETE-Programa Operacional Factores de Competitividade and by FCT-Fundacao para a Ciencia e a Tecnologia. Sara Silverio acknowledges her Ph.D. grant from FCT (SFRH/BD/43439/2008)