We investigate the propagation of spatial solitons in cylindrical strongly nonlocal media by a method of image beam of light. The dynamic force of the soliton steering resulting from the boundary effect is equivalent to the force between the soliton beam and the image beam. The trajectory of the soliton is analytically studied, which is in good agreement with the experimental results.

Movement formulas, engrams, kinesthetic images and internal models of the body in action are notions derived mostly from clinical observations of brain-damaged subjects. They also suggest that the prehensile geometry of an object is integrated in the neural circuits and includes the object's graspable characteristics as well as its semantic properties. In order to determine whether there is a c...

A model concerning the establishment and operation of cues for control was developed and tested to understand how control can be exerted over (automatic) prejudiced responses. Cues for control are stimuli that are associated with prejudiced responses and the aversive consequences of those responses (e.g., guilt). In Experiments 1 and 2, 3 events critical to the establishment of cues occurred: b...

The spatial and temporal organization of molecules within a cell is critical for coordinating the many distinct activities carried out by the cell. In an increasing number of biological signaling processes, scaffold proteins have been found to play a central role in physically assembling the relevant molecular components. Although most scaffolds use a simple tethering mechanism to increase the ...

For several years past the cephalotribe has been attracting the attention of obstetricians, as the journals of medicine testify. Much ingenuity has been exerted in profoundly modifying its original construction by A. Baudelocque, nephew of the great accoucheur of the same name, and by other Parisians. These modifications, especially as made by British obstetricians, have appeared to me, on theo...

psychometric measures (cf. Kogan, 1973; McCleUand, 1973). Given this restriction, studies of the functional relation between age and achievement can be roughly grouped into two primary categories. On the one hand, achievement may take the form of noteworthy creativity, in which case the goal is to assess how productivity changes over the life span. Such inquiries focus on individual accomplishm...

Research has found that individuals who are lower in self-control strength because of previous self-control exertions perform more poorly on subsequent tests of self-control. The present studies suggest that this effect may be moderated by motivation. In particular, depletion and motivation jointly determine self-control performance. Individuals who were depleted and believed that the task woul...

We develop here a multi-agent model of the creation of knowledge (scientific progress or technological evolution) within a community of researchers devoted to such endeavors. In the proposed model, agents learn in a physical-technological landscape, and weight is attached to both individual search and social influence. We find that the combination of these two forces together with random experi...

Many biologists now recognize that environmental variance can exert important effects on patterns and processes in nature that are independent of average conditions. Jensen's inequality is a mathematical proof that is seldom mentioned in the ecological literature but which provides a powerful tool for predicting some direct effects of environmental variance in biological systems. Qualitative pr...