Low-density series expansions for directed percolation II: The square lattice with a wall

A new algorithm for the derivation of low-density expansions has been used to greatly extend the series for moments of the pair-connectedness on the directed square lattice near an impenetrable wall. Analysis of the series yields very accurate estimates for the critical point and exponents. In particular, the estimate for the exponent characterizing the average cluster length near the wall, $\tau_1=1.00014(2)$, appears to exclude the conjecture $\tau_1=1$. The critical point and the exponents $\nu_{\parallel}$ and $\nu_{\perp}$ have the same values as for the bulk problem.Comment: 8 pages, 1 figur

Circuit theory for crossed Andreev reflection and nonlocal conductance

Nonlocal currents, in devices where two normal metal terminals are contacted to a superconductor, are determined using the circuit theory of mesoscopic superconductivity. We calculate the conductance associated with crossed Andreev reflection and electron transfer between the two normal metal terminals, in addition to the conductance from direct Andreev reflection and quasiparticle tunneling. Dephasing and proximity effect are taken into account.Comment: Included in special issue Spin Physics of Superconducting heterostructures of Applied Physics A: Materials Science & Processin

'Are they just checking our obesity or what?' The healthism discourse and rural young women

This paper makes use of critical discourse analysis and Bourdieu’s theoretical framework to explore rural young women’s meanings of health and fitness and how the healthism discourse is perpetuated through their experiences in school physical education (PE). The young women’s own meanings are explored alongside interview data from their school PE head of department (HoD). The healthism discourse was evident in the way that the young women spoke of physical activity, health, fitness and their bodies. They viewed health and fitness as being important to control body shape and adhered to a stereotypical feminine appearance as ideal. The data also illustrate how a school health and physical education (HPE) HoD’s own engagements with the healthism discourse and the school’s HPE curriculum shaped the young women’s understandings of health and fitness and their bodies. Data presented in this paper are drawn from an Australian longitudinal, qualitative project involving interview and visual collection methods. The longitudinal nature of the data adds to existing research by demonstrating the durability of the healthism discourse as it is perpetuated through PE even up to two years post-school. Understanding how the healthism discourse is reproduced through social structures such as the school, and how it perpetuates traditional meanings and approaches to physical activity has important implications for the generation of physical activity and health promotion initiatives

Alternative perspectives on connections in economic systems

Complex system, Decision rules, Lifestyle, Goodwill, Substitution, Evolution, B41, B52, D11, D20,