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Manuscript received September 18, 2006; revised September 18, 2007. The material in this paper was presented in part at the IEEE Information Theory Workshop (ITW), San-Antonio, Texas, USA, October 2004, and in the IEEE International Symposium on Information Theory (ISIT), Adelaide, Australia, September 2005. O. Shental was with the Department of Electrical Engineering-Systems, Tel Aviv Universi...
ریزش سقف معادن زیرزمینی یکی از مشکلاتی است که معدنکاران اغلب با آن روبرو میشوند. مواردی مثل شکستگیها و گسلها باعث کاهش مقاومت طبقات بالایی لایه زغالسنگ میشود. بههمین دلیل، آگاهی از وضعیت سقف در معادن زغالسنگ قبل از استخراج آن بسیار مهم است. این تحقیق بهمنظور پیشبینی وضعیت سقف کارگاه در معدن مکانیزه زغالسنگ طبس و به کمک تخمینگر زمینآماری انجام شد. در این راستا، ابتدا اطلاعات آم...
Introduction T2 contrast generated by transverse relaxation is routinely used for diagnosis for various diseases and for uncovering living processes like brain activations. Another interesting aspect of T2 contrast in human brain is its close relationship with regional iron concentration. Since Drayer pointed out the correlation [1], a number of works have been done to clarify the relationship....
Background: We performed an updated meta-analysis of randomized placebo-controlled trials testing memantine monotherapy for patients with Alzheimer’s disease (AD). Methods: The meta-analysis included randomized controlled trials of memantine monotherapy for AD, omitting those in which patients were also administered a cholinesterase inhibitor. Cognitive function, activities of daily living, beh...
Background: We performed an updated meta-analysis of randomized placebo-controlled trials testing memantine monotherapy for patients with Alzheimer’s disease (AD). Methods: The meta-analysis included randomized controlled trials of memantine monotherapy for AD, omitting those in which patients were also administered a cholinesterase inhibitor. Cognitive function, activities of daily living, beh...
The electrocardiogram has the considerable diagnostic significance, and applications of ECG monitoring are diverse and in wide use. ECG signal after acquisition contains noises such as power line interference, instrumentation noise, external electromagnetic field interference, noise due to random body movements and respiration movements. These noises can be classified according to their frequen...
In this work, a simple and efficient artifact cancellation in ambulatory ECG using adaptive filter is designed for the detection of different cardiac diseases like bradycardia, tachycardia, left ventricular hypertrophy and right ventricular hypertrophy. Our work is focused on extraction of noise free ECG signal and the real-time implementation of artifacts removal techniques. As ECG signal is v...
We present a compact and low loss 90° optical hybrid on a silicon-on-insulator (SOI) platform for coherent receiving systems. Our 90° optical hybrid uses a novel topology, comprising one Y-junction and three 2x2 multimode interference (MMI) couplers. The geometry of the 90° optical hybrid is fully optimized using particle swarm optimization (PSO). The fabricated 90° optical hybrid has a compact...
Introduction: The functional MRI (fMRI) method is based on the blood oxygenation level dependence (BOLD) contrast, which is the result of interplay among the CBF, CBV and CMRO2 changes in response to brain stimulation . From the standpoint of NMR physics, BOLD associated with the susceptibility change will affect T2/T2*, in contrast, the perfusion change quantified by CBF and/or inflow effect w...
This paper cover the analysis and construction of current to voltage transducer based on Rogowski coil which satisfy the requirements of high-accuracy measurement of AC current (up to 20 A at power supply frequency, with the aiming uncertainty of 100 parts per million). Primary source of ac current uncertainty measured by this type of transducer is nonuniform density of turns which, in case of ...
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