Conference Presentations by Clara Viseu
Considering that the Integrated System of Performance Management and Appraisal in the Public Sect... more Considering that the Integrated System of Performance Management and Appraisal in the Public Sector (SIADAP) is a performance management tool – of the Portuguese public administration – that is yet barely explored by literature regarding its motivational effects, it is critical to obtain a better understanding of those effects. So as to improve such knowledge, we have carried out an empirical study on SIADAP. The study focused on the civil servants assigned to three institutions, subject to performance appraisal through SIADAP; and it was based on a questionnaire that generated 334 valid responses, which were subjected to a statistical analysis of a descriptive and inferential nature. The study concluded that SIADAP may be an important motivational tool, provided that the appraisees perceive it as an accurate and fair system, and are satisfied with it. However, the study also concluded that the keynote is that respondents consider this system as inaccurate, unfair and are unsatisfied with it. Therefore, the study suggests that SIADAP has a small role in motivating the Portuguese civil servants to improve their performance.
Papers by Clara Viseu
Statistica Neerlandica
In the context of regularly varying tails, we first analyze a generalization of the classical Hil... more In the context of regularly varying tails, we first analyze a generalization of the classical Hill estimator of a positive tail index, with members that are not asymptotically more efficient than the original one. This has led us to propose alternative classical tail index estimators, that may perform asymptotically better than the Hill estimator. As the improvement is not really significant, we also propose generalized jackknife estimators based on any two members of these two classes. These generalized jackknife estimators are compared with the Hill estimator and other reduced-bias estimators available in the literature, asymptotically, and for finite samples, through the use of Monte Carlo simulation. The finite-sample behaviour of the new reduced-bias estimators is also illustrated through a practical example in the field of finance.
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Conference Presentations by Clara Viseu
Papers by Clara Viseu