On mean elements in artificial-satellite theory

Relativistic Corrections for the Earth Artificial Satellite Theory

In the persesnt work an artificial satellite theory is developed including all the zonal harmonics of the geopotential besides the post-Newtnian effects arising from the Schwarzschild solution and the Earth's oblateness. The Hamiltonian is formed in terms of the Deluanay canonical variables allowing for the coupling between the Newtonian and the post-Newtonian terms. Small quantities are retain...

Mean-motion resonances in satellite–disc interactions

Mean-motion resonances between a Keplerian disc and an orbiting companion are analysed within a Hamiltonian formulation using complex canonical Poincaré variables, which are ideally suited to the description of eccentricity and inclination dynamics. Irreversibility is introduced by allowing for dissipation within the disc. A method is given for determining the rates of change of eccentricity an...

Pragmatic Elements of Rawls’s Theory of Justice

In this article, in order to demonstrate the pragmatic elements of Rawls’s viewpoint, the developmental path of his A Theory of Justice shall first be investigated. This development has two phases: In the first phase, justice has an ethical-philosophical basis. In A Theory of Justice, this phase is specifically shown under the title of theory of justice. In the second phase, justice has no phil...

Utilizing satellite images and artificial neural networks in estimation of vegetation fraction in arid regions

Estimating and modeling monthly mean daily global solar radiation on horizontal surfaces using artificial neural networks

In this study, an artificial neural network based model for prediction of solar energy potential in Kerman province in Iran has been developed. Meteorological data of 12 cities for period of 17 years (1997–2013) and solar radiation for five cities around and inside Kerman province from the Iranian Meteorological Office data center were used for the training and testing the network. Meteorologic...