To Be the Body of Christ: Discipleship (Solidarity) and Eucharist

In this presentation, I explore the relation between discipleship as solidarity and Eucharist. To this end, the Gospel of Luke sets the scriptural parameters, as the story of the disciples on the way to Emmaus and their experience of recognizing Jesus at table in the breaking of bread is narrated only in this Gospel. Written in the final decades of the first century and addressed to a community of mixed social and economic standing, Luke’s narrative has come under critique for its tendency to convey double-messages and its ambiguity toward women and the poor. New Testament scholar Sharon Ringe has argued that Luke “pulled his punches:” Luke speaks about the poor, but he speaks to the rich; he emphasizes charity, but seems not to advocate change in repressive political and economic arrangements. We too live in a powerful nation of increasingly deep and wide social and economic disparities and divisions. This gospel raises as many questions for us as it seeks to answer: How are we to live if we call ourselves disciples of Jesus? Do we speak truth to power or pull our punches? What does it mean for us to be the body of Christ

Poverty and social policy in Europe 2020: ungovernable and ungoverned

This is a post-peer-review, pre-copy edited version of an article published in Policy and Politics. The definitive publisher-authenticated version of: Copeland, Paul, and Mary Daly. "Poverty and social policy in Europe 2020: ungovernable and ungoverned." Policy & Politics 42.3 (2014): 351-365 is available online at: http://dx.doi.org/10.1332/030557312X655503This article examines the latest iteration of EU social policy – the target to reduce poverty and social exclusion by 20 million. The application of a three-part conceptual matrix – focused on ideas, politics and governance – indicates key weaknesses. The target is ungovernable because it melds different approaches to poverty and social exclusion and because of the leeway to Member States to adopt an approach of their own choice. And the target is ungoverned because of low political priority and uncertainty around its legal status, as well as ambiguity over how it fits into the Europe 2020 governance process

Modified method of characteristics for the shallow water equations

Flow in open channels is frequently modelled using the shallow water equations (SWEs) with an up-winded scheme often used for the nonlinear terms in the numerical scheme (Delis et al., 2000; Erduran et al., 2002). This paper presents a mathematical model based on the SWEs to compute one dimensional (1-D) open channel flow. Two techniques have been used for the simulation of the flood wave along streams which are initially dry. The first one uses up-winding applied to the convective acceleration term in the SWEs to overcome the problem of numerical instabilities. This is applied to the integration of the shallow water equations within the domain, so the scheme does not require any special treatment, such as artificial viscosity or front tracking technique, to capture steep gradients in the solution. As in all initial value problems, the main difficulty is the boundaries, the conventional method of characteristics (MOC) can be applied in a straight forward way for a lot of cases, but when dealing with a very shallow initial depths followed by a flood wave, it is not possible to overcome the problem of reflections. So a modified method of characteristics (MMOC) is the second technique that has been developed by the authors to obtain a fully transparent downstream boundary and is the main subject of this paper. The mathematical model which integrates the SWEs using a staggered finite difference scheme within the domain and the MMOC near the boundary has been tested not only by comparing its results with some analytical solutions for both steady and unsteady flow but also by comparing the results obtained with the results of other models such as Abiola et al. (1988)

Range extension, habitat and conservation status of three rare mallees, Eucalyptus castrensis, Eucalyptus fracta and Eucalyptus pumila from the Hunter Valley, NSW

New populations of three threatened mallee species, Eucalyptus castrensis K.D.Hill, Eucalyptus fracta K.D.Hill and Eucalyptus pumila Cambage (all Myrtaceae), have recently been found in the Singleton Military Area in the Hunter Valley of New South Wales (32°45’S, 151°15’E). Each population is significant as they increase the known distribution and total numbers of three highly restricted species. Details of the habitat and size of each additional population are given and conservation notes provided

Trade, growth and the environment

trade policy;economic growth;environment;GATT;general equilibrium;pollution

Dynamics of dark energy

In this paper we review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating Universe. In particular we discuss the arguments for and recent progress made towards understanding the nature of dark energy. We review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence, tachyon, phantom and dilatonic models. The importance of cosmological scaling solutions is emphasized when studying the dynamical system of scalar fields including coupled dark energy. We study the evolution of cosmological perturbations allowing us to confront them with the observation of the Cosmic Microwave Background and Large Scale Structure and demonstrate how it is possible in principle to reconstruct the equation of state of dark energy by also using Supernovae Ia observational data. We also discuss in detail the nature of tracking solutions in cosmology, particle physics and braneworld models of dark energy, the nature of possible future singularities, the effect of higher order curvature terms to avoid a Big Rip singularity, and approaches to modifying gravity which leads to a late-time accelerated expansion without recourse to a new form of dark energy.Comment: 93 pages, 26 figures, Invited Review to be submitted to International Journal of Modern Physics D; comments are welcome; Additional references included in response to over 60 comments received. Rewriting of sub-sections on anthropic principle and gravitational backreaction. New subsections adde

Duality in cosmological perturbation theory

Cosmological perturbation equations derived from low-energy effective actions are shown to be invariant under a duality transformation reminiscent of electric-magnetic, strong-weak coupling, S-duality. A manifestly duality-invariant approximation for perturbations far outside the horizon is introduced, and it is argued to be useful even during a high curvature epoch. Duality manifests itself through a remnant symmetry acting on the classical moduli of cosmological models, and implying lower bounds on the number and energy density of produced particles.Comment: 14 pages, LATEX, no figure