|r(xi + ex)− r(xi)| ≤M2 ‖ex‖ , |fx(xi + ex)− fx(xi)| ≤M3 ‖ex‖ for some positive number M1,M2, and M3. ri (xi), E(si|xi), fx(xi) are p-th order differentiable and the p-th order derivatives are bounded. Corresponding Author: Arthur Lewbel, Department of Economics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA, 02467, USA. (617)-552-3678, [email protected], https://www2.bc.edu/∼lewbel/. ...

We consider repairable threshold schemes (RTSs), which are threshold schemes that enable a player to securely reconstruct a lost share with help from their peers. We summarise and, where possible, refine existing RTSs and introduce a new parameter for analysis, called the repair metric. We then explore using secure regenerating codes as RTSs and find them to be immediately applicable. We compar...

The Spearman-Kärber method can be used to estimate the threshold value or difference limen in two-alternative forced-choice tasks. This method yields a simple estimator for the difference limen and its standard error, so that both can be calculated with a pocket calculator. In contrast to previous estimators, the present approach does not require any assumptions about the shape of the true unde...

This paper compares two methods for extracting room acoustic parameters from reverberated speech and music. An approach which uses statistical machine learning, previously developed for speech, is extended to work with music. For speech, reverberation time estimations are within a perceptual difference limen of the true value. For music, virtually all early decay time estimations are within a d...

System safety research has a weakness in terms of evaluation. In particular, the field has a poor track record for applying appropriate research methods to the questions we wish to answer, and for evaluating the answers in a convincing way. Given changes in government and public attitudes to research funding, this will be an increasing concern in the near future. In this paper, we define a taxo...

Objectives. To better understand the consequences of whole or partial reliance on test scores as a screening mechanism for college or university admissions or for job placement or promotion. Methods. We introduce a simple hurdles/threshold model to study one particular mechanism that has been recently proposed to generate a ‘‘compromise’’ between race-normed or gender-normed standards for accep...

A model of the mechanism of residue pitch perception is revisited. It is evaluated in the context of some new empirical results, and it is proposed that the model is able to reconcile a number of differing approaches in the history of theories of pitch perception. The model consists of four sequential processing stages: peripheral frequency selectivity, within-channel half-wave rectification an...