In this paper we show that in two-body scattering the scattering matrix at a fixed energy determines real-valued exponentially decreasing potentials. This result has been proved by Novikov previously [4], see also [3], using a ∂-equation. We present a different method, which combines a density argument and real analyticity in part of the complex momentum. The latter has been noted in [3]; here ...

We study an inverse problem for a non-compact Riemannian manifold whose ends have the following properties : On each end, the Riemannian metric is assumed to be a short-range perturbation of the metric of the form (dy) + h(x, dx), h(x, dx) being the metric of some compact manifold of codimension 1. Moreover one end is exactly cylindrical, i.e. the metric is equal to (dy) +h(x, dx). Given two su...

A novel transition structure based on Substrate Integrated Circular Cavity (SICC) is proposed in this paper. The design approach of the transition structure can also be used in other operating frequency. Good performance of flexibility and S-parameters were observed for the new transition structure. Different design tools were used to validate the design method.

This paper analyses the workspace of the three-revolute orthogonal manipulators that have at least one of their DH parameters equal to zero. These manipulators are classified into different groups with similar kinematic properties. The classification criteria are based on the topology of the workspace. Each group is evaluated according to interesting kinematic properties such as the size of the...

This paper presents the results of a pitch accent categorisation simulation which attempts to classify L*H and H*L accents using a psychologically motivated exemplar-theoretic model of categorisation. Pitch accents are represented in terms of six linguistically meaningful parameters describing their shape. No additional information is employed in the categorisation process. The results indicate...

Jeffreys’ prior, one of the widely used noninformative priors, remains invariant under reparameterization, but does not perform satisfactorily in the presence of nuisance parameters. To overcome this deficiency, recently various noninformative priors have been proposed in the literature. Ž . This article explores the invariance or lack thereof of some of these noninformative priors including th...

Utilizing the most recent experimental data, we reanalyze high energy p̄p and pp data, using the asymptotic amplitude analysis, under the assumption that we have reached ‘asymptopia’. This analysis gives strong evidence for a log (s/s0) dependence at current energies and not log(s/s0), and also demonstrates that odderons are not necessary to explain the experimental data. Work partially supporte...

BWB investigate whether exchange rate unpredictability is due to instabilities of the relationship between exchange rates and its fundamentals. In their exercise, BWB calibrate on actual data a model where the parameters linking exchange rates and fundamentals are allowed to change over time. BWB find that the pattern of out-of-sample (un)predictability assessed on data generated from a fixed c...

1 Assistant Professor of Architectural Engineering, University of Nebraska – Lincoln, Omaha, NE 68182-0681, [email protected]. Abstract  The purpose of this paper is to show the merits of using the order-of-magnitude analysis in engineering education to solve engineering and science problems, e.g., taken from the fields of heat transfer and fluid mechanics. By this approach, the engineering stude...