This paper is concerned with the inverse scattering problem which aims to determine spatially distributed dielectric constant coefficient of 2D Helmholtz equation from multifrequency backscatter data associated a single direction incident plane wave. We propose globally convergent convexification numerical algorithm solve this nonlinear and ill-posed problem. The key advantage our method over c...

A diagnosis of cancer can be devastating for patients and their loved ones. We compared the intensity of anxiety and depression for 30 terminally ill cancer patients and 30 chronically ill patients and the quality of life of their most attendant caregivers. Hamilton depression and anxiety scales were used with the patients and the quality of life scale (family) was used with the caregivers. Can...

Fast 0(n2) implementation of Gaussian elimination with partial pivoting is designed for matrices possessing Cauchy-like displacement structure. We show how Toeplitz-like, Toeplitz-plus-Hankel-like and Vandermondelike matrices can be transformed into Cauchy-like matrices by using Discrete Fourier, Cosine or Sine Transform matrices. In particular this allows us to propose a new fast 0{n2) Toeplit...

The EU has integrated core state powers in a largely unsustainable manner. Why is this? In this introduction to special issue on Germany, we take an in-depth look at national preference-formation. We trace the impact of elites, as emphasised by functionalist theories, and mass publics political parties, stressed postfunctionalism. find that across policy fields with striking continuity over tim...

OBJECTIVES To determine whether Gulf War veterans with neuromuscular symptoms that included weakness and fatigue had either 1) objective correlates for muscle weakness or fatigue; or 2) any etiologic explanation for such symptoms; and if so, 3) whether such objective measures or etiologic mechanisms were specific to Gulf War service. METHODS Forty-nine ill Gulf War veterans with more than fou...

This article examines the possibilities and pitfalls of using Big Data to address sexual reproductive health concerns as related Sustainable Development Goals (SDGs), paying particular attention contextual difference in development settings. The global datafication life has taken place at great speed. However, evidential deficiencies a lack critical engagement specific issues around working wit...

Some economic models like the cash-in-advance model of money or overlapping generations model have the property that the dynamics are ill-defined going forward in time, but well-defined going backward in time. In such instances, what does it mean for an ill-defined dynamical system to be chaotic? Furthermore, under what conditions are such dynamical systems chaotic? In this paper, we provide a ...