Mahdi Bagheri

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Evolvable hardware (EHW) is a set of techniques that are based on the idea of combining reconfiguration hardware systems with evolutionary algorithms. In other word, EHW has two sections; the reconfigurable hardware and evolutionary algorithm where the configurations are under the control of an evolutionary algorithm. This paper, suggests a method to design(More)
Quadrature oscillators usually suffer from output signal phase ambiguity. A modified quadrature oscillator is proposed, where the output sequence is deterministic. Simulation and measurements show that the modified QOSC has little degradation in phase noise or increase in power consumption, and has a unique output sequence. The circuit dissipates 6 mW and(More)
Quadrature oscillators (QOSCs) can operate in two selective modes of quadrature oscillation. By controlling the mode of oscillation, different wide tuning range CMOS LC QOSCs have been designed. The measured tuning range is 60% for 3.7 GHz design and 94% for 1.3 GHz design. Phase noise measurement shows that by this modified series coupled QOSC (S-QOSC) a(More)
Object detection is an important area of research in computer vision. One of the challenges in this domain is to detect objects in real time using the minimum resources possible. In this paper, we describe a robust method for real time object detection that can be used on low-profile hardware and needs little training. This approach is based on a discrete(More)
OBJECTIVE To evaluate the effect of aromatherapy with Lavandula angustifolia essential oil on post-tonsillectomy pain in pediatric patients. METHODS This was a randomized controlled prospective clinical trial. In this study, 48 post-tonsillectomy patients aged 6-12 years were randomly assigned to two groups (24 patients in each group). After tonsillectomy(More)
This paper presents the first E-band phased array transceiver that uses injection locked oscillators (ILOs) for beamforming. We propose a current injection distribution network with wide locking range and high isolation. A 2×2 bidirectional transceiver is demonstrated to operate from 71-86 GHz and measurements verify that each oscillator can be(More)
Quadrature oscillators (QOs) based on parallel or series coupling mechanisms produce ambiguous phase relationships between the coupled oscillators. Deterministic mode selection is presented and analyzed for a series-coupled LC quadrature oscillator ( LC-QO) and leveraged to increase the tuning range of the QO. Series-coupled LC-QOs have been implemented in(More)
OBJECTIVE This study aims to explore the knowledge of a randomly selected cohort of Iranian general practitioners (GPs) on the topic of acetaminophen dosing for fever in children. METHODS In this cross-sectional study, which was conducted in March 2011 in Isfahan (Iran) 515 GPs who were practicing general family medicine were sent a self-administered(More)