The electrical resistivities of metals and alloys tend to saturate at some value in the range 150–250 μΩcm, corresponding semi-classical mean free paths near a few interatomic distances. origin this effect is still under debate no accepted theory exists. However, saturation behavior can often be described quite accurately by algebraic functions derived from simple theory. Such may used for anal...

A new analytical theory for multiple scattering of cylindrical acoustic waves by an array of finite impedance semi-cylinders embedded in a smooth acoustically hard surface is derived by extending previous results for plane waves [Linton and Martin, J. Acoust. Soc. Am. 117 (6) 3413 – 3423 (2005)]. Although the computational demands of the new theory increase as the number of the semi-cylinders i...

An extensive study of two current ion mobility resolving power theories ("conditional" and "semi-empirical") was undertaken using a recently developed drift tube ion mobility-mass spectrometer. The current study investigates the quantitative agreement between experiment and theory at reduced pressure (4 Torr) for a wide range of initial ion gate widths (100 to 500 μs), and ion mobility values (...

This thesis presents practical suggestions towards the implementation of the hyperset approach to semi-structured databases and the associated query language ∆ (Delta). This work can be characterised as part of a top-down approach to semi-structured databases, from theory to practice. Over the last decade the rise of the World-Wide Web has lead to the suggestion for a shift from structured rela...

The NSTP theory is a (philosophy of mind) semi-idealistic as well as semi-dualistic theory that the material universe, the one in which peculiar phenomena like quantum nonlocality exist, is exclusively a group of superhuman as well as non-superhuman thinking processes existing in the form of (non-spatial physical/material) feelings (i.e. states of consciousness). In computer terminology, it reg...

In this paper, minimal conditions under which a semi-parametric binary response model is identified in a Bayesian framework are presented and compared to the conditions usually required in a sampling theory framework. Running headline: Semi-parametric Binary Response Models.

The well known isomorphism relating the rational algebraic K-theory groups and the rational motivic cohomology groups of a smooth variety over a field of characteristic 0 is shown to be realized by a map (the “Segre map”) of infinite loop spaces. Moreover, the associated Chern character map on rational homotopy groups is shown to be a ring isomorphism. A technique is introduced which establishe...

We examine the close analogy which exists between Helly graphs and hyperconvex metric spaces, and propose the hyperconvex semi-metric space as an unifying concept. Unlike the metric spaces, these semi-metric spaces have a rich theory in the discrete case. Apart from some new results on Helly graphs, the main results concern: fixed point property of contractible semi-metric spaces (for nonexpans...

Semi-absolute deviation is a commonly used downside risk measure in the portfolio optimization problem. However, there is no literature on taking semi-absolute deviation as a risk measure in the framework of uncertainty theory. This paper fills the gap by means of defining semi-absolute deviation for uncertain variables and establishes the corresponding mean semi-absolute deviation models in un...