Recent results using all-point quark propagators

Pseudofermion methods for extracting all-point quark propagators are reviewed, with special emphasis on techniques for reducing or eliminating autocorrelations induced by low eigenmodes of the quark Dirac operator. Recent applications, including high statistics evaluations of hadronic current correlators and the pion form factor, are also described.Comment: LateX, 3 pages, 6 eps figures, Lattice2002(algor), corrected some typo

Hadronic Correlators from All-point Quark Propagators

A method for computing all-point quark propagators is applied to a variety of processes of physical interest in lattice QCD. The method allows, for example, efficient calculation of disconnected parts and full momentum-space 2 and 3 point functions. Examples discussed include: extraction of chiral Lagrangian parameters from current correlators, the pion form factor, and the unquenched eta-prime.Comment: LATTICE01(Algorithms and Machines

Income and Child Well-Being. THIRTY-FOURTH GEARY LECTURE, 2005

My topic this afternoon is the link between family income and the well-being of children. While it is easy to document the better health and higher achievement of children who have grown up in richer as opposed to poorer families, it is much harder to isolate the causal impact of income itself. Children growing up in higher income families are advantaged in many other ways, including having parents who have completed more formal schooling and are embedded in higher-status social networks, and whose genetic endowments may provide cognitive and health-related advantages

How the Turtle Lost its Shell: Sino-Tibetan Divination Manuals and Cultural Translation

This article is a pan-Himalayan story about how the turtle, as a cultural symbol within Sino-Tibetan divination iconography, came to more closely resemble a frog. It attempts a comparative analysis of Sino-Tibetan divination manuals, from Tibetan Dunhuang and Sinitic turtle divination to frog divination among the Naxi people of southwest China. It is claimed that divination turtles, upon entering the Himalayan foothills, are not just turtles, but become something else: a hybrid symbol transformed via cultural diffusion, from Han China to Tibet, and on to the Naxi of Yunnan. Where borders are crossed, there is translation. If we go beyond the linguistic definition of translation towards an understanding of transfer across semiotic borders, then translation becomes the reforming of a concept from one cultural framework into another. In this way, cultural translation can explain how divination iconography can mutate and transform when it enters different contexts; or in other words, how a turtle can come to lose its shell

A rigorous and efficient asymptotic test for power-law cross-correlation

Podobnik and Stanley recently proposed a novel framework, Detrended Cross-Correlation Analysis, for the analysis of power-law cross-correlation between two time-series, a phenomenon which occurs widely in physical, geophysical, financial and numerous additional applications. While highly promising in these important application domains, to date no rigorous or efficient statistical test has been proposed which uses the information provided by DCCA across time-scales for the presence of this power-law cross-correlation. In this paper we fill this gap by proposing a method based on DCCA for testing the hypothesis of power-law cross-correlation; the method synthesizes the information generated by DCCA across time-scales and returns conservative but practically relevant p-values for the null hypothesis of zero correlation, which may be efficiently calculated in software. Thus our proposals generate confidence estimates for a DCCA analysis in a fully probabilistic fashion

Key Components and Best Practices for Environmental Impact Assessments

New and emerging activities pose risks to the conservation and sustainable development of ABNJ in the absence of prior assessment, and remain a significant gap under UNCLOS. Environmental impact assessments and strategic environmental assessments are widely accepted as valuable tools for incorporating environmental and social concerns into decision making processes with respect to specific projects or activities (EIAs) or policies, plans or programmes (SEAs). The development of a new international instrument to address the conservation and sustainable use of marine biological diversity in areas beyond national jurisdiction ("international Instrument") is an opportunity to incorporate best practices for EIAs and SEAs already found under a number of multilateral and regional agreements, and apply lessons learned from their application. Importantly, the new Instrument should also provide the mechanism for the assessment of cumulative impacts of activities and climate change

Why teach legal ethics on undergraduate law degrees?

There is a considerable debate as to whether legal ethics should be taught on undergraduate law degrees in the UK. This is a contribution to that debate which argues for such a development. It presents a series of arguments about the desirability of doing so, both from the perspective of preparing students for entry into the legal profession and from that of ensuring a critical, liberal education in law. It enters into the debate about what it is we might seek to achieve in ethics teaching. The article presents a variety of approaches to how students might learn legal ethics, drawn from a number of countries and giving references to publications which provide more detail and insight. It concludes with a link to a new international database and forum designed to assist colleagues in these developments

The importance of poverty early in childhood

Introduction: Using a poverty line set at 60% of New Zealand’s median national income, nearly one in five New Zealand children (19%) was poor in 2011. This poverty rate is considerably less than that of the United States and Canada, similar to that of Australia, the United Kingdom, Germany and France, and much greater that in Scandinavian countries. These rates are far from immutable; New Zealand’s child poverty rate was much higher in 2004 before social policies were enacted which focused, in part, on the country’s child poverty problem

Using G0W0G_0W_0 Level Alignment to Identify Catechol's Structure on TiO2_2(110)

We perform state-of-the-art calculations for a prototypical dye sensitized solar cell: catechol on rutile TiO$_2$(110). Catechol is often used as an anchoring group for larger more complex organic and inorganic dyes on TiO$_2$ and forms a type II heterojunctions on TiO$_2$(110). In particular, we compare quasiparticle (QP) $G_0W_0$ with hybrid exchange correlation functional (HSE) density functional theory (DFT) calculations for the catechol-rutile TiO$_2$(110) interface. In so doing, we provide a theoretical interpretation of ultraviolet photoemission spectroscopy (UPS) and inverse photoemission spectroscopy (IPES) experiments for this prototypical system. Specifically, we demonstrate that the position, presence, and intensity of peaks associated with catechol's HOMO, intermolecular OH$-$O bonds, and interfacial hydrogen bonds to the surface bridging O atoms (O$_{br}$H$-$C and O$_{br}$H$-$O) may be used to fingerprint deprotonation of catechol's OH anchoring groups. Furthermore, our results suggest deprotonation of these groups, while being nearly isoenergetic at high coverages, may significantly increase the photovoltaic efficiency of catechol$-$TiO$_2$(110) interfaces.Comment: 7 pages, 4 figures, corrected table