The focus of this paper is to extend the lifetime of a battery powered node in wireless context. The lifetime of a battery depends on both the manner of discharge and the transmission power requirements. We present a framework for computing the optimal discharge strategy which maximizes the lifetime of a node by exploiting the battery characteristics and adapting to the varying power requiremen...

Up to now, a few formulas have been suggested by scholars for the amount of discharge from openings, however, the effect of opening's geometry on the amount of discharge has not addressed thoroughly. In this study, to assess the effect of rectangular openings’ aspect ratio on the discharge amount, experimental and numerical investigations have been conducted on the discharge amount from rectang...

The study was focused on variability in discharges on equity of water distribution of outlets along the secondary canal. Hydraulic performance was evaluated based on delivery performance ratio (DPR), adequacy based on relative water supply (RWS) and variability in discharges using coefficient of variation (CVs). Off take and all outlets were calibrated by area velocity method. During study peri...

abstract one of the ways to increase economic and environmental efficiency of drainage systems is water table management. water table management consists of, controlled drainage and subirrigation. this study examines the effect of controlled drainage on yield, root distribution pattern and water use efficiency of maize (sc 704) in karaj. the experiment was performed as a randomized complete des...

venturi flumes are measurement structures commonly used in water systems to measure the flow discharge. some of them are not well installed or present some geometrical defects. the objective of this study is to investigate the hydraulic influence of a number of typical wrong installations and geometrical defects of long-throated venturi flumes: significant positive or adverse slopes, humps and ...

This article presents a study on the performance characteristics of Francis turbine operating with various guide vane openings to determine best point based unit quantities. The were specified width between vanes at their exit, i.e., 10 mm, 13 16 and 19 mm. characteristic curves turbine—head versus speed, torque discharge efficiency speed—were obtained input power openings. From these data, plo...