Beyond the mincer equation: the internal rate of return to higher education in Colombia

In order to present an estimation of the Internal Rate of Return (IRR) to higher education in Colombia we take advantage of the methodological approach provided by Heckman, Lochner and Todd (2005). Trying to overcome the criticism that surrounds interpretations of the education coefficient of Mincer equations as being the rate of return to investments in education we develop a more structured approach of estimation, which controls for selection bias, includes more accurate measures of labor income and the role of education costs and income taxes. Our results implied a lower rate of return than the ones found in the Colombian literature and show that the Internal Rate of Return for higher education in Colombia lies somewhere between 0.074 and 0.128. The results vary according to the year analyzed and individual’s gender. This last result reinforces considerations regarding gender discrimination in the Colombian labor market.

Validity evidence based on internal structure

Resumen tomado de la publicación

Spanish adaptation of the Internal functioning of the Work Teams Scale (QFI-22)

Resumen tomado de la publicaci??n

Internal structure and standardized scores of the Spanish adaptation of the EGRA (Early Grade Reading Assessment) for early reading assessment

Resumen tomado de la publicaci??n

The effect of counterpoise correction and relaxation energy term to the internal rotation barriers: application to the BF3 ...NH3 and C2H4 ...SO2 dimers

The relevance of the fragment relaxation energy term and the effect of the basis set superposition error on the geometry of the BF3⋯NH3 and C2H4⋯SO2 van der Waals dimers have been analyzed. Second-order Møller-Plesset perturbation theory calculations with the d95(d,p) basis set have been used to calculate the counterpoise-corrected barrier height for the internal rotations. These barriers have been obtained by relocating the stationary points on the counterpoise-corrected potential energy surface of the processes involved. The fragment relaxation energy can have a large influence on both the intermolecular parameters and barrier height. The counterpoise correction has proved to be important for these systems

Internal test sets studies in a group of antimalarials

Topological indices have been applied to build QSAR models for a set of 20 antimalarial cyclic peroxy cetals. In order to evaluate the reliability of the proposed linear models leave-n-out and Internal Test Sets (ITS) approaches have been considered. The proposed procedure resulted in a robust and consensued prediction equation and here it is shown why it is superior to the employed standard cross-validation algorithms involving multilinear regression models

Internal structure of chlorosomes from brown-colored Chlorobium species and the role of carotenoids in their assembly

Chlorosomes are the main light harvesting complexes of green photosynthetic bacteria. Recently, a lamellar model was proposed for the arrangement of pigment aggregates in Chlorobium tepidum chlorosomes, which contain bacteriochlorophyll (BChl) c as the main pigment. Here we demonstrate that the lamellar organization is also found in chlorosomes from two brown-colored species (Chl. phaeovibrioides and Chl. phaeobacteroides) containing BChl e as the main pigment. This suggests that the lamellar model is universal among green sulfur bacteria. In contrast to green-colored Chl. tepidum, chlorosomes from the brown-colored species often contain domains of lamellar aggregates that may help them to survive in extremely low light conditions. We suggest that carotenoids are localized between the lamellar planes and drive lamellar assembly by augmenting hydrophobic interactions. A model for chlorosome assembly, which accounts for the role of carotenoids and secondary BChl homologs, is presented

O consultor de gestão como auditor interno do seu próprio desempenho

O início do século tem sido pródigo em transformações rápidas e radicais no sector de consultoria, como resultado do questionamento dos modelos de diversificação estratégica levados a cabo por diversas consultoras. Mas, ainda que estas mudanças constituam de certa forma uma barreira à legitimidade do sector, a verdade é que este pressuposto tem contribuído também para o desenvolvimento do estudo do sector no meio académico, sobretudo ao longo dos últimos vinte anos onde tem existido um conjunto de literatura substancial que tem vindo a refletir a contribuição, conceptualização e compreensão da natureza do trabalho de consultoria e sobre o real valor dos consultores na forma como demonstram esse valor aos seus clientes. Daqui, ressaltam então as seguintes questões fulcrais. Consultoria de gestão é para quem? Deverá ser o consultor de gestão um auditor interno do seu próprio desempenho? Assim sendo, o que pretendo neste artigo é exatamente enfatizar um conjunto de pressupostos que permitam descrever um conjunto de requisitos necessários que devem estar implícitos nas características intrínsecas da caracterização de um profissional de serviços de consultoria, pois a premissa desta profissão deve compreender que é o profissional de consultoria que deve gerir as suas atividades e não as atividades gerir o profissional de consultoria. / The beginning of the century has been prolific in rapid and radical transformations in the consultancy sector, as a result of the questioning of models of strategic diversification undertaken by several consultants. But, even if these changes constitute a barrier to the legitimacy of the sector, the truth is that this assumption has also contributed to the development of the sector study in the academic environment, especially over the last twenty years it has existed a set of substantial literature that has come to reflect the contribution, conceptualization and understanding of the nature of consulting work and the real value of consultants in the way that demonstrate value to their customers. It emphasizes two key questions. Management consulting is for whom? It should be the management consultant an internal auditor of its own performance? So, what I want to emphasize in this article is exactly one set of assumptions that allow describing a set of requirements that must be implicit in the characterization of the intrinsic characteristics of a consulting services manager, because the premise of this profession must understand that it is the professional adviser that should manage their activities and not the activities to manage the professional adviser.

Psychophysical estimation of the effective level of internal noise in the auditory system

This paper reviews a study to examine signal detection in the auditory system.

Information and anti-terrorist security of Poland. A critical analysis exemplified with the tasks and activity of the Internal Security Agency

The subject matter of the analysis conducted in the text is information and anti-terrorist security of Poland, which has been presented within the context of a clash between two spheres – the state and the private sphere. Furthermore, the issues of security have been supplemented with a description of the tasks and activity of the Internal Security Agency, as well as a synthetic appraisal of a terrorist threat to Poland. The main parts of this work are concerned with: (1) the state and the private sphere, (2) " terrorism " and terrorist offences, (3) the tasks and activity of the Internal Security Agency, (4) an appraisal of a terrorist threat to Poland. Given the necessity to elaborate the research problem, the text features the following research questions: (1) To what extent does referring to a threat to security influence a limitation on rights and freedoms in Poland (with regard to the clash between the state and the private sphere)?, (2) To what extent do the tasks and activity of the Internal Security Agency influence the effectiveness of anti-terrorist security in Poland?

Poland’s internal security as exemplified by the tasks and activities of the Internal Security Agency in the period 2007–2015

The text analyses Poland's internal security illustrated with the example of the tasks and activities of one of the Polish special services, the Internal Security Agency (pol. Agencja Bezpieczeństwa Wewnętrznego – ABW). Although the Internal Security Agency was established as a counter-intelligence service, the scope of its tasks and activities places it among the criminal intelligence services, which is poorly effective in terms of the eradication of crime targeted at the state's internal security. The analysis of the issues of state security in the context of the ISA's activity has been elaborated in the present text with the following research questions: (1) To what extent does the statutory scope of the ISA's tasks lower the effectiveness of the actions aimed at combating crime threatening state security? (2) To what extent does the structural pathology inside the ISA lower the effectiveness of the actions aimed at combating crime threatening state security? The text features an extensive analysis of three major issues: (1) the ISA's statutory tasks (with particular consideration of de lege lata and de lege ferenda regulations), (2) the dysfunctional character of the ISA's activity in relation to the scope of its statutory tasks, and (3) the structural pathology resulting from the 'politicisation' of the Internal Security Agency.