Testing for equivalence: an intersection-union permutation solution

The notion of testing for equivalence of two treatments is widely used in clinical trials, pharmaceutical experiments,bioequivalence and quality control. It is essentially approached within the intersection-union (IU) principle. According to this principle the null hypothesis is stated as the set of effects lying outside a suitably established interval and the alternative as the set of effects lying inside that interval. The solutions provided in the literature are mostly based on likelihood techniques, which in turn are rather difficult to handle, except for cases lying within the regular exponential family and the invariance principle. The main goal of present paper is to go beyond most of the limitations of likelihood based methods, i.e. to work in a nonparametric setting within the permutation frame. To obtain practical solutions, a new IU permutation test is presented and discussed. A simple simulation study for evaluating its main properties, and three application examples are also presented.Comment: 21 pages, 2 figure

HOW HAVE MUSICIANS’ CAREERS CHANGED IN THE DIGITAL PLATFORM ERA?

openLa "platform society" è una realtà. O meglio, una seconda realtà che si aggiunge e si sovrappone alla dimensione fisica. Ciò vale anche per l'industria musicale. Gli ulitmi quindici anni hanno visto la crescita di piattaforme di streaming musicale come Spotify, con il conseguente riposizionamento dei vari attori coinvolti nell'industria e del relativo sistema economico. Per i musicisti, il nuovo scenario apre a nuove possibilità e pone nuove sfide.The platform society is a reality. Better said, it is a second reality that adds and intertwines with the physical dimension. This is so also for the music industry. The last fifteen years have seen the growth of music streaming platforms such as Spotify and the consequent repositioning of actors and revolution of the music economy. The new scenario opens up new possibilities and poses new challenges to musicians' careers

Effects of speeding up or slowing down animate or inanimate motions on timing

It has recently been suggested that time perception and motor timing are influenced by the presence of biological movements and animacy in the visual scene. Here, we investigated the interactions among timing, speed and animacy in two experiments. In Experiment 1, observers had to press a button in synchrony with the landing of a falling ball while a dancer or a whirligig moved in the background of the scene. The speed of these two characters was artificially changed across sessions. We found striking differences in the timing of button-press responses as a function of the condition. Responses were delayed considerably with increasing speed of the whirligig. By contrast, the effect of the dancer's speed was weaker and in the opposite direction. In Experiment 2, we assessed the perceived animacy of these characters and found that the dancer was rated as much more animate than the whirligig, irrespective of the character speed. The results are consistent with the hypothesis that event timers are selectively biased as a function of perceived animacy, implicating high-level mechanisms for time modulation. However, response timing interacts with perceived animacy and speed in a complex manner

Programming and Audits Committee Meeting Agenda 10/26/2011

Student Government Senate Committee on Programming and Audits meeting agenda for 10/26/201