Motivation and theoretical perspective. Morphological derivation is the process of forming new words (derived terms) from existing ones (base terms) such as nominalization. E.g., the English noun dancer is derived from the verb dance by applying the agentive suffix -er. In contrast to inflection, which changes the grammatical properties of the base term, derivation arguably creates a new lexica...

Let R be a prime ring of characteristic different from 2, U the Utumi quotient ring of R, C the extended centroid of R, F and G non-zero generalized derivations of R. If the composition (FG) acts as a Lie derivation on R, then (FG) is a derivation of R and one of the following holds: 1. there exist α ∈ C and a ∈ U such that F (x) = [a, x] and G(x) = αx, for all x ∈ R; 2. G is an usual derivatio...

the expressions foavibrational overlap integrals of the one-dimensional harmonic wavefunctions (centenxi about different equilibrium positions and having different frequencies) have been derived in a simple and straightforward way.

this paper studies derivation in scientific and colloquial varieties in persian, and seeks to determine the frequency and manner of this process in each of the above-mentioned varieties by scrutinizing and comparing a significant number of derived words. to do so, after collecting persian scientific and colloquial words and analyzing them, the following issues will be specified a) what kinds of...

background: ischemic heart disease (ihd) is the main cause of morbidity and mortality worldwide, and a considerable part of these patients attend to emergency departments, which increases the burden to these busy departments. the aim of this study was to develop a prediction model enabling prediction of all cause emergency department (ed) visits in patients with documented coronary stenosis in ...

The traditional stepwise refinement based program derivation methodologies are primarily top-down. Strictly following the topdown program derivation approach may require backtracking resulting in rework. Moreover, the top down approach does not directly help in suggesting the next course of action in case of a failed derivation attempt. In this work we seamlessly incorporate a bottom up assumpt...

In reality, perfect source of randomness is hard to find. So, for real life applications, an imperfect source X of min-entropy k is converted into usable m-bit cryptographic key for some underlying application P . If P has security δ (against some class of attackes) with uniform random m-bit key, our goal is to design a key derivation function (KDF) h that allows us to use R = h(x) as the key f...

1. Given any associative ring A one can construct from its operations and elements a new ring, the Jordan ring of A, by defining the product in this ring to be a o b = ab+ba for all a, b^A, where the product ab signifies the product of a and b in the associative ring A itself. If R is any ring, associative or otherwise, by a derivation of R we shall mean a function, ', mapping R into itself so ...

This paper concerns the derivation of a Fokker-Planck equation for the correlation of two high frequency wave fields propagating in two different random media. The mismatch between the random media need be small, on the order of the wavelength, and their correlation length need be large relative to the wavelength. The loss of correlation caused by the mismatch in the random media is quantified ...

BACKGROUND The objective of this work was the study of analogical reasoning from the perspective of the equivalence-equivalence phenomenon. METHOD The variables studied consisted of the age of the participants and the educational level of the parents, in relation to performance on a reasoning task. The task utilized a sample size of 64 participants and an instrument based on conditional discr...