Two particles on a star graph II

We consider a two particle system on a star graph with delta-function interaction. A complete description of the eigensolutions with real momenta is given; specifically it is shown that all eigensolutions can be written as integrals in the momentum plane of sums of products of appropriate one particle solutions.Comment: typos corrected, minor changes, journal ref adde

Attitude, aptitude, ability and autonomy: ther emergence of "off-roaders", a special class of nomadic worker

This is an electronic version of an article published in Harmer, B. M., & Pauleen, D. J. (2010). Attitude, aptitude, ability and autonomy: the emergence of ‘offroaders’, a special class of nomadic worker. Behaviour & Information Technology, 1-13. http://dx.doi.org/10.1080/0144929x.2010.489117 Behaviour & Information Technology is available online at: www.tandfonline.comFreedom to choose when, where and on what to work might be viewed as mere telework. However, when we mix the adoption of ubiquitous technologies with personalities that take pleasure in problem solving and achievement for its own sake, a strong need for autonomy, the freedom to work wherever and whenever the mood strikes, and add a dash of entrepreneurial spirit, then perhaps we are seeing an emergent class of worker, and even the possibility of new organisational forms. This research draws on adaptive structuration theory to search for evidence of a different way of working, hidden among otherwise familiar patterns. It concludes by considering what implications the employment of such individuals might have for management processes with organisations

Minimal Brownian Ratchet: An Exactly Solvable Model

We develop an exactly-solvable three-state discrete-time minimal Brownian ratchet (MBR), where the transition probabilities between states are asymmetric. By solving the master equations we obtain the steady-state probabilities. Generally the steady-state solution does not display detailed balance, giving rise to an induced directional motion in the MBR. For a reduced two-dimensional parameter space we find the null-curve on which the net current vanishes and detailed balance holds. A system on this curve is said to be balanced. On the null-curve, an additional source of external random noise is introduced to show that a directional motion can be induced under the zero overall driving force. We also indicate the off-balance behavior with biased random noise.Comment: 4 pages, 4 figures, RevTex source, General solution added. To be appeared in Phys. Rev. Let