Concepts for the development of light-weight composite structures for rotor burst containment

Published results on rotor burst containment with single materials, and on body armor using composite materials were used to establish a set of hypotheses about what variables might control the design of a weight-efficient protective device. Based on modern concepts for the design and analysis of small optimum seeking experiments, a particular experiment for evaluating the hypotheses and materials was designed. The design and methods for the analysis of results are described. The consequence of such hypotheses is that the device should consist of as many as four concentric rings, each to consist of a material uniquely chosen for its position in the penetration sequence

Numbers of center points appropriate to blocked response surface experiments

Tables are given for the numbers of center points to be used with blocked sequential designs of composite response surface experiments as used in empirical optimum seeking. The star point radii for exact orthogonal blocking is presented. The center point options varied from a lower limit of one to an upper limit equal to the numbers proposed by Box and Hunter for approximate rotatability and uniform variance, and exact orthogonal blocking. Some operating characteristics of the proposed options are described

Calculation of internal and scattered fields of axisymmetric nanoparticles at any point in space

We present a method of simultaneously calculating both the internal and external fields of arbitrarily shaped dielectric and metallic axisymmetric nanoparticles. By using a set of distributed spherical vector wavefunctions that are exact solutions to Maxwell's equations and which form a complete, linearly independent set on the particle surface, we approximate the surface Green functions of particles. In this way we can enforce the boundary conditions at the interface and represent the electromagnetic fields at the surface to an arbitrary precision. With the boundary conditions at the particle surface satisfied, the electromagnetic fields are uniquely determined at any point in space, whether internal or external to the particle. Furthermore, the residual field error at the particle surface can be shown to give an upper bound error for the field solutions at any point in space. We show the accuracy of this method with two important areas studied widely in the literature, photonic nanojets and the internal field structure of nanoparticles

Optimal design procedures for two-level fractional factorial experiments given partial prior information about parameters

Design optimization for fractional factorial experiments by finite decision problem based on prior informatio

This Land Is Your Land, This Land Is Mined Land: Expanding Governmental Ownership Liability Under CERCLA

Part II of this Note begins by providing a brief overview of the background and goals of CERCLA. Part II also provides an examination of the issue of ownership liability under CERCLA and recounts the federal courts’ difficulty in applying ownership liability. Part II then describes how the federal government’s “bare legal title” argument arose out of the confusion surrounding ownership liability in CERCLA litigation. Part III moves on to examine the recent trend in CERCLA litigation rejecting the federal government’s bare legal title argument, thus holding the federal government liable as an owner based on its possession of legal title to contaminated public lands. Part IV analyzes whether the bare legal title defense is consistent with CERCLA, taking the position that the defense is not. Finally, Part V contends that federal government liability for its role as titleholder of public lands should extend beyond the context of contaminated mining lands. Ultimately, this Note argues that the recent court decisions rejecting the government’s bare legal title defense are consistent with CERCLA. Courts should not treat the federal government any differently than a private entity and, therefore, courts should hold the federal government liable as an owner under CERCLA for its role as legal titleholder to public lands

Alien Registration- Holms, William H. (Calais, Washington County)

https://digitalmaine.com/alien_docs/1011/thumbnail.jp

Backward deletion to minimize prediction errors in models from factorial experiments with zero to six center points

Population model coefficients were chosen to simulate a saturated 2 to the fourth power fixed effects experiment having an unfavorable distribution of relative values. Using random number studies, deletion strategies were compared that were based on the F distribution, on an order statistics distribution of Cochran's, and on a combination of the two. Results of the comparisons and a recommended strategy are given

Computer program to minimize prediction error in models from experiments with 16 hypercube points and 0 to 6 center points

A previous report described a backward deletion procedure of model selection that was optimized for minimum prediction error and which used a multiparameter combination of the F - distribution and an order statistics distribution of Cochran's. A computer program is described that applies the previously optimized procedure to real data. The use of the program is illustrated by examples

A biharmonic relaxation method for calculating thermal stress in cooled irregular cylinders

A numerical method was developed for calculating thermal stresses in irregular cylinders cooled by one or more internal passages. The use of relaxation methods and elementary methods of finite differences was found to give approximations to the correct values when compared with previously known solutions for concentric circular cylinders possessing symmetrical and asymmetrical temperature distributions