TILL WORK DO US PART - THE SOCIAL FALLACY OF LONG-DISTANCE COMMUTING

A growing number of people in Europe are long-distance commuters. For some people and households long-distance commuting may be a temporary lifestyle, offering financial and career benefits, whereas for others commuting lifestyle becomes permanent. Commuting can mean increased salary, a better job, the only possibility to keep a job for the individual, but also increased stress, long travel times, and in some cases household break-up. However, despite the growing number of long-distance commuters, the long-term social implications of long-distance commuting on households are not well understood. This paper focuses on social implications of long-distance commuting on commuters and their households in Sweden. Discrete-time regression models were employed to register data on Swedish couples in 2000 to explore the risk of separation following long-distance commuting during 1995 to 2005. The results show that among couples where one or both spouses long-distance commute separation rates are higher compared to non-commuting couples. For men the odds of separating are highest if commuting is on a temporary basis, whereas women decrease the odds when continuing commuting for a longer time-period

Latency Relaxation: A Brief Analytical Review

In this report I review certain aspects of the research on the latency relaxation (LR), the minute relaxation of a stimulated muscle that occurs during the latter half of the latent period, i.e., just prior to the onset of contraction (e.g., Sandow, 1944). The first part of my discussion will be historical, dealing with the early, mostly descriptive work on the LR, and then I shall present a more analytically oriented attempt to indicate the significance of the LR in relation to certain aspects of the response of a muscle to stimulation

Connectedness of two-sided group digraphs and graphs

Two-sided group digraphs and graphs, introduced by Iradmusa and Praeger, provide a generalization of Cayley digraphs and graphs in which arcs are determined by left and right multiplying by elements of two subsets of the group. We characterize when two-sided group digraphs and graphs are weakly and strongly connected and count connected components, using both an explicit elementary perspective and group actions. Our results and examples address four open problems posed by Iradmusa and Praeger that concern connectedness and valency. We pose five new open problems.Comment: Made changes suggested by referee. Added five new open problems. To appear in Involv

Exact results for one dimensional stochastic cellular automata for different types of updates

We study two common types of time-noncontinuous updates for one dimensional stochastic cellular automata with arbitrary nearest neighbor interactions and arbitrary open boundary conditions. We first construct the stationary states using the matrix product formalism. This construction then allows to prove a general connection between the stationary states which are produced by the two different types of updates. Using this connection, we derive explicit relations between the densities and correlation functions for these different stationary states.Comment: 7 pages, Late

On U_q(SU(2))-symmetric Driven Diffusion

We study analytically a model where particles with a hard-core repulsion diffuse on a finite one-dimensional lattice with space-dependent, asymmetric hopping rates. The system dynamics are given by the \mbox{U$_{q}$[SU(2)]}-symmetric Hamiltonian of a generalized anisotropic Heisenberg antiferromagnet. Exploiting this symmetry we derive exact expressions for various correlation functions. We discuss the density profile and the two-point function and compute the correlation length $\xi_s$ as well as the correlation time $\xi_t$. The dynamics of the density and the correlations are shown to be governed by the energy gaps of a one-particle system. For large systems $\xi_s$ and $\xi_t$ depend only on the asymmetry. For small asymmetry one finds $\xi_t \sim \xi_s^2$ indicating a dynamical exponent $z=2$ as for symmetric diffusion.Comment: 10 pages, LATE

Multiple Shocks in a Driven Diffusive System with Two Species of Particles

A one-dimensional driven diffusive system with two types of particles and nearest neighbors interactions has been considered on a finite lattice with open boundaries. The particles can enter and leave the system from both ends of the lattice and there is also a probability for converting the particle type at the boundaries. We will show that on a special manifold in the parameters space multiple shocks evolve in the system for both species of particles which perform continuous time random walks on the lattice.Comment: 11 pages, 1 figure, accepted for publication in Physica