Dynamic power management has been adopted in many systems to reduce the power consumption by changing the system state dynamically. This paper explores energy efficiency for systems equipped with PCI Express devices, which are designed for low power consumption and high performance, compared to corresponding PCI devices. We propose dynamic power management mechanism and a management policy for ...

this paper studies the technical efficiency of 12 branches of saman bank over the period 1387-88, relating it to the composition of staff by sex, the ratio of fixed assets to total assets, the age of the branches and the geographic ranking in development indicators of the city where the branch is located in. data envelopment analysis is used to determine the efficiency of branches. the average ...

This paper presents a variable frequency multiplier technique (VFX) that enables design of converters for wide input and/or output voltage ranges while preserving high efficiency. The technique is applied to an LLC converter to demonstrate the effectiveness of this technique for converters having wide input voltage variation such as universal input power supplies. This technique compresses the ...

In this paper, the use of a variable volume ratio expander for 10 kWe organic Rankine cycle (ORC) to be integrated in Carnot battery has been studied. The reciprocating piston used work built-in mechanism which allows changing inlet valve timing and hence internal - pressure ratio. experimental results ORC prototype are presented. A total 58 steady state points collected by varying heat source ...

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 ...

The one–dimensional differential equations for the conservation mixture mass and mixture momentum coupled by a relative velocity conservation equation have been solved for an isentropic mixture of gas and liquid two–phase flow. Under certain restrictions the resulting system of partial differential equations is hyperbolic and allow discontinuous solutions. These equations have been solved by th...

Both the porous medium equation and the system of isentropic Euler equations can be considered as steepest descents on suitable manifolds of probability measures in the framework of optimal transport theory. By discretizing these variational characterizations instead of the partial differential equations themselves, we obtain new schemes with remarkable stability properties. We show that they c...