Values of binary mutual diffusion (interdiffusion) coefficients, obtained by using the Taylor dispersion method, for aqueous solutions of γ-cyclodextrin in the concentration range from (0.002 to 0.010) mol ·dm and temperatures (298.15 and 310.15) K are reported. From these experimental results, the hydrodynamic radius values for the γ-cyclodextrin are estimated. Also, the measured diffusion coe...

A formal algorithm of a two-way stratification design described by Bryant et al. (1960) is presented. Also a simple modification is proposed which improves the design.

We introduce a novel method of modelling Tullock rent-seeking contests that avoids the complexities encountered by the ‘best response function’ approach. We analyse contests in which there are many risk averse players differing in their attitudes to risk. We establish that, if every player has a constant degree of absolute risk aversion, a unique equilibrium exists. We also establish comparativ...

This paper proposes the use of the Hartley Phase Cepstrum as a tool for signal analysis. The phase of a signal conveys critical information, which is exploited in a variety of applications. The role of phase is particularly important for the case of speech or audio signals. Accurate phase information extraction is a prerequisite for speech applications such as coding, synchronization, synthesis...

This short survey article reviews our current state of understanding of the structure of noetherian Hopf algebras. The focus is on homological properties. A number of open problems are listed. To the memory of my teacher and friend Brian Hartley

Discrete transforms such as the discrete Fourier transform (DFT) or the discrete Hartley transform (DHT) furnish an indispensable tool in signal processing. The successful application of transform techniques relies on the existence of the so-called fast transforms. In this paper some fast algorithms are derived which meet the lower bound on the multiplicative complexity of the DFT/DHT. The appr...

We introduce the chiral domain of an arrangement cameras $$\mathcal {A} = \{A_1,..., A_m\}$$ which is subset $$\mathbb {P}^3$$ visible in {A}$$ . It generalizes classical definition chirality to include all and offers a unifying framework for studying multiview chirality. give algebraic description allows us define describe version Triggs’ joint image. then use re-derive extend prior results on...

In this paper, we propose a class of Hartley-Ross type unbiased estimators for estimating the finite population mean of the study variable under ranked set sampling (RSS), when population mean of the auxiliary variable is known. The variances of the proposed class of unbiased estimators are obtained to first degree of approximation. Both theoretically and numerically, the proposed estimators ar...