We introduce an elasticity-based mechanism that drives active particles to self-organize by cascading self-propulsion energy towards lower-energy modes. We illustrate it on a simple model of self-propelled agents linked by linear springs that reach a collectively rotating or translating state without requiring aligning interactions. We develop an active elastic sheet theory, complementary to th...

This is a companion volume to "The Child and the Family," consisting of a collection of Dr. Winnicott's articles and broadcasts dealing with the child as his relationships begin to spread outside the family. The section on evacuated children is of lasting value as it highlights the nature of family ties, then seen under stress, and still has lessons (particularly on residential treatment) which...

lies in their springs, which are usually hot and hold in solution large quantities of mineral organic and gaseous matters, to which for centuries their healing power has been ascribed. The modern view, however, tends to attribute the beneficial effects of these places to change of environment, rest, disciplined exercise, diet and habits of life, rather than to any special therapeutic power of t...

We obtain the exact nonequilibrium work generating function (NEWGF) for a small system consisting of a massive Brownian particle connected to internal and external springs. The external work is provided to the system for a finite-time interval. The Jarzynski equality, obtained in this case directly from the NEWGF, is shown to be valid for the present model, in an exact way regardless of the rat...

As models for biological molecular motors, Brownian motors have been studied recently by many workers, and their physical properties such as velocity, efficiency, and so on, have been investigated. They have also attracted much interest in an application to nanoscale technology. It is significant to study more complex systems, that is, coupled Brownian motors, in detail, since Brownian motors w...

As the Earth's third pole, the Tibetan Plateau has experienced a pronounced warming in the past decades. Recent studies reported that the start of the vegetation growing season (SOS) in the Plateau showed an advancing trend from 1982 to the late 1990s and a delay from the late 1990s to 2006. However, the findings regarding the SOS delay in the later period have been questioned, and the reasons ...

In the field of organization and management studies – as in any other area of inquiry – knowledge springs from reflection on experience. Whenever we are confronted by a phenomenon unknown to us, we are induced to formulate hypotheses on its nature and on its dynamics, to break it down into elements or factors and conjecture relationships among them. The process is circular: the mind projects hy...