Imaging processes built on the Compton scattering effect have been under continuing investigation since it was first suggested in the 50s. However, despite many innovative contributions, there are still formidable theoretical and technical challenges to overcome. In this paper, we review the state-of-the-art principles of the so-called scattered radiation emission imaging. Basically, it consist...

We review key mathematical concepts used in the theory of Statistical Shape Analysis (SSA). The treatment is elementary and aims at providing a brief guide to a large number of results and ideas which are dispersed over an also very large literature on Non-Euclidean Geometry, Differential Geometry, and Topology. The goal is to provide an introduction to the ideas SSA touches in these areas to r...

Abstract: On the basis of Lyapunov stability theory, local asymptotic stability control of a class of complex dynamical network with coupling delay is achieved by pinning controllers. Taking the Kronecker product multiplication as the main tool, through rigorous mathematical derivation, the asymptotic stability conditions of such complex dynamical network with coupling delay are obtained by app...

Sen's entitlements approach has attracted much attention and imitation, including attempted extensions beyond its original context in the explanation of famines. It has evolved in various ways as it is applied to new regions, purposes, and subjects -beyond South Asia, to policy design, and to matters of routine hunger, environment, gender and overall intra-societal distribution. For analysis of...

Exploratory factor analysis is a complex and multivariate statistical technique commonly employed in information system, social science, education and psychology. This paper intends to provide a simplified collection of information for researchers and practitioners undertaking exploratory factor analysis (EFA) and to make decisions about best practice in EFA. Particularly, the objective of the ...

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The kinematics concept test (KCT) is a multiple-choice test designed to evaluate students’ conceptual understanding of kinematics at the high school level. The test comprises 49 multiple-choice items about velocity and acceleration, which are based on seven kinematic concepts and which make use of three different representations. In the first part of this article we describe the development and...

Systems analysis is the examxna.t on of a problem situation in order to define the requirements of a solution, often computerized, to that problem. The diversity of prob ems and the constraints of computing technology require that a probWra be thoroughly analyzed in order to insure that the problem is claarly understood. Then, and only then, it can be determined how ccuputing technology can be ...

This work presents methods for exploring the lexical environment of political concepts using interactive network visualisations of corpus-derived grammatical relations and word associations. The conceptual relations consist of part-of-speech tagged words connected by typed, weighted, edges indicating the strength of relations between words, as measured by pointwise mutual information of differe...