In this paper, we describe a new class of fast solvers for separable elliptic partial differential equations in cylindrical coordinates (r, θ, z) with free-space radiation conditions. By combining integral equation methods in the radial variable r with Fourier methods in θ and z, we show that high-order accuracy can be achieved in both the governing potential and its derivatives. A weak singula...

Purpose: The aim of this study was to design and validate a high school technological competency curriculum model. Methodology: This study had an integrated strategy. To answer the questions, the research was conducted in four phases. The first phase was conducted with a qualitative approach and the other phases were conducted with a quantitative approach. In the first phase of this research, ...

The growing internationalization of R&D activities challenges multinational corporations (MNCs) to formulate technology strategies and manage increasingly diffuse and diverse networks of R&D laboratories and alliances in the context of disparate national institutions. This paper examines the evolutionary processes of MNCs’ R&D strategies in China in terms of two principal dimensions, i.e. geogr...

In this paper, we apply the microlocal analysis to study the singularity structure of the two-point function in a supersymmetric model formulated in superspace language.

In this paper we present two methods for detecting centers of monodromic degenerate singularities of planar analytic vector fields. These methods use auxiliary symmetric vector fields can be applied independently that the singularity is algebraic solvable or not, or has characteristic directions or not. We remark that these are the first methods which allows to study monodromic degenerate singu...

We deal with the definition of superdistributions on superspace over a Grassmann-Banach algebra and the extension of the Hörmander's description of the singularity structure (wavefront set) of a distribution to include the supersymmetric case.

We present a consistent framework that enables us to understand the big bang singularity of our Universe.

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Cecchetti et al. (2002) estimate the half-life to price index convergence among U.S. cities to be approximately nine years. Although they correct for the small-sample bias in their panel estimate of the half-life, they do not adjust for biases that may potentially arise due to heterogeneity in the dynamic behavior of prices across cities, and time aggregation of price indices. This paper finds ...