Sir,—Most surgeons like darkness in the operating theatre while carrying out procedures such as cystoscopy, oesophagoscopy, laparoscopy, retinoscopy in children, fundus examination during operation for retinal detachment, etc. Relatively dark conditions are preferred for carrying out certain investigations in the radiology department and cardiovascular laboratory. Under these conditions the ana...

Bionics plays an important role in the treatment of Epilepsy using memristors. Bionics is the branch of science in which we study nature and find solutions tohuman problems. Echo state networks (ESN) or reservoirs, are random, recurrent neural network topologies that integrate temporal data over short time windows by operating on the edge of chaos. Recently, there is a significant effort on the...

Abstract This paper aims to improve summer power generation of the Yeywa Hydropower Reservoir in Myanmar using modified multi-step ahead time-varying hedging (TVH) rule as a case study. The results TVH rules were compared with standard operation policy (SOP) rule, binary (BSOP) discrete (DH) (SH) one-point (OPH) and two-point (TPH) rule. Multi-Objective Genetic Algorithm (MOGA) was utilized dri...

Reservoir depletion will cause the safe equivalent circulation density (ECD) operating window of drilling fluids to narrow, or even disappear. Previous studies have proposed a set of two specific casings at the top and bottom of the depleted reservoir, respectively, or conducted wellbore strengthening to increase fracture pressure, but these will cause a waste of time and costs, or differential...

In arid and semi-arid regions particularly vulnerable to climate change, optimizing the long-term operation of multi-purpose reservoirs is paramount. This study derived an optimum two-dimensional rule curve jointly operate parallel Mosul Dukan, Northern Iraq. A hybridized optimization technique combining conventional dynamic programming with shuffled complex evolution algorithm (SCE-UA) was dev...