Application of the CBF Method to the Scattering by Combinations of Bodies of Revolution and Arbitrarily Shaped Structures

In this paper, an algorithm is described which enables efficient analysis of electromagnetic scattering by configurations consisting of arbitrarily shaped conducting bodies and conducting bodies of revolution (BoR). The well-known problem resulting from the loss of azimuthal mode decoupling, when in addition to BoR geometry there exists a body that does not belong to the rotational symmetry of the BoR, is circumvented by the use of characteristic basis function (CBF) method. This however requires careful implementation of the method in order to obtain stable and efficient procedure

Their Sleep Is To Be Desecrated : California\u27s Central Valley Project and the Wintu People of Northern California, 1938- 1943

The morning of July 14, 1944, was intended to be a moment of celebration for the City of Redding, California. Secretary of the Interior Harold L. Ickes had been scheduled to arrive in the booming city to dedicate Shasta Dam, a national reclamation project of great pride to local citizens and construction workers. Just days prior, however, the dedication ceremony had been canceled due to the inability of Ickes to leave Washington D.C.. Instead, a small group of U.S. Bureau of Reclamation (BOR) officials, Sacramento Municipal Utility District (SMUD) officials, and local city officials quietly gathered within the dam\u27s $19,400,000 power plant. A BOR official flipped a switch to start one of the plant\u27s two massive generators, sending a surge of 120,000 watts of hydroelectricity into California\u27s transmission lines and the Pacific, Gas, and Electric (PG&E) distribution system. This energy would fuel the West\u27s war industries and the federal defense effort in World War II. Though without fanfare, the switching event signaled the official start of commercial production of power from the world\u27s second largest dam and keystone of the Central Valley Project (CVP). From Washington, D.C., the event was heralded by BOR Commissioner Harry W. Bashore as a milestone in the fulfillment of visions Californians have had for nearly 100 years.

Discussion of: Brownian distance covariance

Discussion on "Brownian distance covariance" by G\'{a}bor J. Sz\'{e}kely and Maria L. Rizzo [arXiv:1010.0297]Comment: Published in at http://dx.doi.org/10.1214/09-AOAS312E the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

Discussion of: Brownian distance covariance

Discussion on "Brownian distance covariance" by G\'{a}bor J. Sz\'{e}kely, Maria L. Rizzo [arXiv:1010.0297]Comment: Published in at http://dx.doi.org/10.1214/00-AOAS312C the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

Discussion of: Brownian distance covariance

Discussion on "Brownian distance covariance" by G\'{a}bor J. Sz\'{e}kely, Maria L. Rizzo [arXiv:1010.0297]Comment: Published in at http://dx.doi.org/10.1214/09-AOAS312D the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org

Plastic deformation mechanisms in polyimide resins and their semi-interpenetrating networks

High-performance thermoset resins and composites are critical to the future growth of space, aircraft, and defense industries in the USA. However, the processing-structure-property relationships in these materials remain poorly understood. In the present ASEE/NASA Summer Research Program, the plastic deformation modes and toughening mechanisms in single-phase and multiphase thermoset resins were investigated. Both thermoplastic and thermoset polyimide resins and their interpenetrating networks (IPNs and semi-IPNs) were included. The fundamental tendency to undergo strain localization (crazing and shear banding) as opposed to a more diffuse (or homogeneous) deformation in these polymers were evaluated. Other possible toughening mechanisms in multiphase thermoset resins were also examined. The topological features of network chain configuration/conformation and the multiplicity of phase morphology in INPs and semi-IPNs provide unprecedented opportunities for studying the toughening mechanisms in multiphase thermoset polymers and their fiber composites

Roots of bivariate polynomial systems via determinantal representations

We give two determinantal representations for a bivariate polynomial. They may be used to compute the zeros of a system of two of these polynomials via the eigenvalues of a two-parameter eigenvalue problem. The first determinantal representation is suitable for polynomials with scalar or matrix coefficients, and consists of matrices with asymptotic order $n^2/4$, where $n$ is the degree of the polynomial. The second representation is useful for scalar polynomials and has asymptotic order $n^2/6$. The resulting method to compute the roots of a system of two bivariate polynomials is competitive with some existing methods for polynomials up to degree 10, as well as for polynomials with a small number of terms.Comment: 22 pages, 9 figure

Organisational niche boundaries in the n-space

The paper investigates organizational boundary spanning from the point of view of neighborhood relations. Neighborhood is defined with the closeness of organizations' resource utilization patterns. The key resource is the clientele's demand for organizational outputs (products, party programs, membership, etc.). Demand is characterized qualitatively by n taste descriptors that span an n-dimensional resource space. Organizational niche boundaries may take different forms and size. To avoid niche overlap over boundaries, organizations can configure in the resource space in different clusterings. Which are the densest arrangements that allow for the coexistence of maximal number of organizations? How can these coexisting neighborhoods build up? How do competition, new entry and the number of immediate neighbors change around the niche boundary with space dimension? The paper applies results of the sphere packing problem in n-dimensional geometry to answer these questions.

A note on absolute summability factors

In this paper, by using an almost increasing and $\delta$-quasi-monotone sequence, a general theorem on $\phi-{\mid{C},\alpha\mid}_k$ summability factors, which generalizes a result of Bor \cite{3} on ${\phi-\mid{C},1\mid}_k$ summability factors, has been proved under weaker and more general conditions.Comment: 4 page