Studying two-dimensional evaporating dilatonic black holes, we show that the semiclassical approximation, based on the background field approach, is valid everywhere in regions of weak curvature (including the horizon), as long as one takes into account the effects of back-reaction of the Hawking radiation on the background geometry. Electronic address: [email protected] Electronic address: leon...

in present work, we have calculated the electronic properties including density of states and electron density for gan, inn and inxga1-xn  in wurtzite phase for x=0.5. the study is based on density functional theory with full potential linearized augmented plane wave method by generalized gradient approximation for calculating electronic properties. in this report we concluded that inxga1-xn ba...

A product channel code is proposed to protect progressively compressed and packetized image data that is transmitted across noisy channels. Across packets, the product code is composed of Reed-Solomon codes. Within packets, the product code uses the concatena-tion of a rate compatible punctured convolutional code and an error detecting parity check code. The beneets include exibility in terms o...

Wrong medication is an important problem of the citizens of many countries. Using contemporary technologies like UHF Gen-2 RFID tags helps decreasing the medication errors, experienced by many. As UHF Gen-2 tags have limited capacity, cryptographic algorithms cannot be accommodated. The only available functions PRNG and CRC cannot be used instead of cryptographic algorithms. To overcome the kno...

BACKGROUND This study aimed to evaluate the yield of the NHS Health Checks programme. METHODS A cohort study, conducted in the Clinical Practice Research Datalink in England. Electronic health records were analysed for patients aged 40-74 receiving an NHS Health Check between 2010 and 2013. RESULTS There were 65 324 men and 75 032 women receiving a health check. For every 1000 men assessed,...

The goal of this work is to evaluate the effectiveness of Plan-Checker Tool (PCT) which was created to improve first-time plan quality, reduce patient delays, increase the efficiency of our electronic workflow, and standardize and automate the physics plan review in the treatment planning system (TPS). PCT uses an application programming interface to check and compare data from the TPS and trea...

In this paper, the structural and electronic properties of polythiophene and polyprrrole-based systems have been investigated using first-principles calculations both in periodic and oligomer forms. Of particular interest is the band gap modulation through substitutions and bilayer formation. Specifically, S has been substituted by Se and Te in polythiophene, leading to polyseleophene and polyt...