The ubiquitous schema ‘All Fs are Gs’ dominates much philosophical discussion on laws but rarely is it shown how actual laws mentioned and used in science are supposed to fit it. After consideration of a variety of laws, including those obviously conditional and those superficially not conditional (such as equations), I argue that we have good reason to support the traditional interpretation of...

A new class of exact solutions of Einstein’s field equations with a perfect fluid source, variable gravitational coupling G and cosmological term Λ for FRW spacetime is obtained by considering variable deceleration parameter models for the universe. The nature of the variables G(t), Λ(t) and the energy density ρ(t) have been examined for three cases : (i) exponential (ii) polynomial and (iii) s...

Symplectic methods for Hamiltonian systems are known to have favourable properties concerning long-time integrations (no secular terms in the error of the energy integral, linear error growth in the angle variables instead of quadratic growth, correct qualitative behaviour) if they are applied with constant step sizes, while all of these properties are lost in a standard variable step size impl...

Thenormal trendin Linear Prediction (LP) techniques is fixed frame windowing. In this paper, however, dynamic window concept is introduced whereframe size is kept variable in order to achieve efficient outcome in terms of computational cost, mean square error and prediction gain. The three famous LP techniques namely Normal Equations, Levinson Durbin Algorithm (LDA) and Leroux Gueguen Algorithm...

In this paper, we have strived to combine all the above mentioned factors into a single problem. We shall undertake to explore a two echelon supply chain, comprising of a vendor and a buyer. The whole environment of business dealings has been assumed to be progressive credit period, which conforms to the practical market situation. The whole combination is very unique and very much practical. T...

Variable selection is an important methodology in multivariate statistics, especially in the context of classiication. However, because the direct evaluation of the subsets using a classiier has been computationally too expensive in the past for a medium to large number of variables, variable selection has instead been performed using simple measures of class separation such as Wilk's or the Ma...

in this study, performance of oil droplet separator in crankcase ventilation system for three engines, ford-ecoboost (impactor with variable area), nissan-vq37de (inertial impactor), and peugeot-xu7 (cyclone) at the same volumetric flow rate has been studied experimentally. because of the complexities of geometrical and functional in internal combustion engines, a test rig is designed to study ...