From the elastic wave equation and the energy conservation principle, we derive a new imaging condition for elastic wavefields. This imaging condition outputs a single image representing the total reflection energy and contains individual terms related to the kinetic and strain energy of the extrapolated wavefields. An advantage of the proposed imaging condition compared to alternatives is that...

Mobile offloading enables mobile devices to distribute computation-intensive tasks to the cloud or other devices for energy conservation or performance gains. In principle, the idea is to trade the relatively low communication energy expense for high computation power consumption. In this thesis, we first focus on the technique of mobile code offloading to the cloud by proposing the new techniq...

the electronic structure, energy band structure and electronic density of 2 sno ceramic in cubicphase have been investigated using first principle full potential-linearized augmented plane wave (fp-lapw)method within density functional theory (dft). local density approximation (lda) and the generalizedgradient approximation (gga), which are based on exchange- correlation energy optimization wer...

Over a dozen natural philosophers of the first half of the nineteenth century have been discussed by historians of science as possible contributors to the emergence of the doctrine of the conservation of energy. One figure who has not been discussed, yet who was deeply interested in the twin principles of the correlation of forces and the conservation of power and attempted to apply them in his...

In this paper, a physical principle that any matter must have finite energy is first proposed, which expressed and the under conditions. According to conservation principle, some laws with unclear reasons are explained: The mass of composite particle greater than sum component particles; potential smaller Any massless move at speed light independent conditions; velocity static field without can...

One of the major goals of the Sustainable Agriculture Farming initiatives at UC Davis is to provide information about the feasibility of adopting conservation tillage and cover cropping at the farm level. The project includes two tillage schemes: standard tillage (ST) and conservation tillage (CT), and three farming methods: conventional, organic, and winter legume cover crop. All three product...

Climate change has resulted in increased vulnerability of smallholder farmers in marginal areas of Zimbabwe where there is limited capacity to adapt to changing climate. One approach that has been used to adapt to changing climate is in-field water harvesting for improved crop yields in the semi- arid regions of Zimbabwe. This review analyses the history of soil and water conservation in Zimbab...

In this paper we develop a new mathematical formulation for chemical compositional reservoir simulation, and provide a comparison of its results on alkaline-surfactant-polymer flooding with those of UTCHEM simulator. Our research has found that the existing chemical compositional model estimates the adsorption effect on the transport of a component reasonably well but it does not satisfy the pr...