Numerical solution of scattering problems using a Riemann--Hilbert formulation

A fast and accurate numerical method for the solution of scalar and matrix Wiener--Hopf problems is presented. The Wiener--Hopf problems are formulated as Riemann--Hilbert problems on the real line, and a numerical approach developed for these problems is used. It is shown that the known far-field behaviour of the solutions can be exploited to construct numerical schemes providing spectrally accurate results. A number of scalar and matrix Wiener--Hopf problems that generalize the classical Sommerfeld problem of diffraction of plane waves by a semi-infinite plane are solved using the approach

Getting to the Core of Role: Defining Interpreters' Role Space

This article describes a new model of interpreted interactions that will help students as well as experienced practitioners define and delineate the decisions that they make. By understanding the dimensions that comprise the concept we call role, interpreters can more effectively allow participants to have successful communicative interactions

Short- and Long- Time Transport Structures in a Three Dimensional Time Dependent Flow

Lagrangian transport structures for three-dimensional and time-dependent fluid flows are of great interest in numerous applications, particularly for geophysical or oceanic flows. In such flows, chaotic transport and mixing can play important environmental and ecological roles, for examples in pollution spills or plankton migration. In such flows, where simulations or observations are typically available only over a short time, understanding the difference between short-time and long-time transport structures is critical. In this paper, we use a set of classical (i.e. Poincar\'e section, Lyapunov exponent) and alternative (i.e. finite time Lyapunov exponent, Lagrangian coherent structures) tools from dynamical systems theory that analyze chaotic transport both qualitatively and quantitatively. With this set of tools we are able to reveal, identify and highlight differences between short- and long-time transport structures inside a flow composed of a primary horizontal contra-rotating vortex chain, small lateral oscillations and a weak Ekman pumping. The difference is mainly the existence of regular or extremely slowly developing chaotic regions that are only present at short time.Comment: 9 pages, 9 figure

Re-visiting Role: Arguing for a multi-dimensional analysis of interpreter behaviour

In this paper, the authors present the outline of a new model of interpreted interactions. This model draws upon the fields of conversational analysis and classical sociological theory to define and delimit the behaviours of interpreters that contribute to successful interpreted interactions

The role of market discipline in handling problem banks

This paper considers the conditions that are necessary for market discipline to complement prompt corrective action (PCA) by the authorities in handling problem banks. We initially consider precisely what market discipline means in this context, who exercises it and the preconditions that are necessary for it to operate effectively. We explore the incentives that are necessary for PCA and market discipline to reinforce rather than cancel each other and in particular consider the limits to market discipline in this context from corporate governance and from difficulties in valuation. While our analysis is primarily aimed at advanced countries, we also examine problems in emerging markets and how deposit insurance arrangements might conflict with the aims of both PCA and market discipline.market discipline; banks; prompt corrective action

The role of market discipline in handling problem banks

This paper considers the conditions that are necessary for market discipline to complement prompt corrective action (PCA) by the authorities in handling problem banks. We initially consider precisely what market discipline means in this context, who exercises it and the preconditions that are necessary for it to operate effectively. We explore the incentives that are necessary for PCA and market discipline to reinforce rather than cancel each other and in particular consider the limits to market discipline in this context from corporate governance and from difficulties in valuation. While our analysis is primarily aimed at advanced countries, we also examine problems in emerging markets and how deposit insurance arrangements might conflict with the aims of both PCA and market discipline.market discipline, banks, prompt corrective action

Investigation of the ionospheric Faraday rotation for use in orbit corrections

The possibility of mapping the Faraday factors on a worldwide basis was examined as a simple method of representing the conversion factors for any possible user. However, this does not seem feasible. The complex relationship between the true magnetic coordinates and the geographic latitude, longitude, and azimuth angles eliminates the possibility of setting up some simple tables that would yield worldwide results of sufficient accuracy. Tabular results for specific stations can easily be produced or could be represented in graphic form

Alien Registration- Kelly, Llewellyn G. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/23284/thumbnail.jp

The Involvement of the Farm Animal Veterinarian in Animal Welfare

The following is excerpted from a paper presented by Mr. Llewellyn, BSc MRCVS at the British Veterinary Association Annual Congress, September 9-14, 1979, Aberdeen, Scotland