According to a previous conjecture, spatial and temporal Lyapunov exponents of chaotic extended systems can be obtained from derivatives of a suitable function, the entropy potential. The validity and the consequences of this hypothesis are explored in detail. The numerical investigation of a continuous-time model provides a further confirmation to the existence of the entropy potential. Furthe...

Learning from nature's amazing molecular machines, globular proteins, we present a framework for the predictive design of nanomachines. We show that the crucial ingredients for a chain molecule to behave as a machine are its inherent anisotropy and the coupling between the local Frenet coordinate reference frames of nearby monomers. We demonstrate that, even in the absence of heterogeneity, pro...

In two behavioural experiments we tested whether performing a spatial task along with another agent changes space representation by rendering some reference frames more/less salient than others. To this end, we used a Simon task in which stimuli were presented in four horizontal locations thus allowing for spatial coding according to multiple frames of reference. In Experiment 1 participants pe...

A signature independent formalism is created and utilized to determine the general second-order symmetry operators for Dirac’s equation on two-dimensional Lorentzian spin manifolds. The formalism is used to characterize the orthonormal frames and metrics that permit the solution of Dirac’s equation by separation of variables in the case where a second-order symmetry operator underlies the separ...

Through the study of frame congruences, new characterizations of the paracompactness of frames are obtained.

The mirror puzzle related to the perception of mirror images as left-right reversed can be more fully understood by considering an extended problem that includes also the perception of mirror images that are not left-right reversed. The purpose of the present study is to clarify the physical aspect of this extended problem logically and parsimoniously. Separate use of the intrinsic frame of ref...

• In Tools of the Trade, kids are given six cartoon frames, each illustrating a problem the archaeology team faced in locating a lost mission on St. Catherines Island. • When kids select a frame, they are given details about the problem; they are then asked to pick which tool they think helped the team solve the problem. • Each time they correctly identify a tool, they are given additional deta...

Video games structure play as performance in both the virtual and the physical space. On the one hand, the player encounters game worlds as virtual stages to act upon. On the other hand, the game world stages the player and re-frames the play space. This essay sets out to suggest some of the elements that are at work in this dualism of games as performative media. The two key elements here are ...

Luminance and color information are considered to be processed in parallel systems. The integration of information from these two separate systems is crucial for the visual system to produce a coherent percept. To investigate how luminance and color lights are perceived in time, we measured the perceived duration of light stimuli with and without colors in a paradigm involving simultaneous perc...

Governments of both the right and left espouse community participation as a means of engaging with their constituencies. Concepts such as social capital, social justice, social participation, social coalition, equity, and communitarianism, are frames through which social policies are viewed. These directions in social policy (‘whole of government’) approaches in Australia; the ‘third way’ and ‘...