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Search Results: 1 - 10 of 12949 matches for " Mohammad Rafiq Beigh "
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Performance Evaluation of Efficient XOR Structures in Quantum-Dot Cellular Automata (QCA)  [PDF]
Mohammad Rafiq Beigh, Mohammad Mustafa, Firdous Ahmad
Circuits and Systems (CS) , 2013, DOI: 10.4236/cs.2013.42020
Abstract:

Quantum-dot cellular automaton (QCA) is an emerging, promising, future generation nanoelectronic computational architecture that encodes binary information as electronic charge configuration of a cell. It is a digital logic architecture that uses single electrons in arrays of quantum dots to perform binary operations. Fundamental unit in building of QCA circuits is a QCA cell. A QCA cell is an elementary building block which can be used to build basic gates and logic devices in QCA architectures. This paper evaluates the performance of various implementations of QCA based XOR gates and proposes various novel layouts with better performance parameters. We presented the various QCA circuit design methodology for XOR gate. These layouts show less number of crossovers and lesser cell count as compared to the conventional layouts already present in the literature. These design topologies have special functions in communication based circuit applications. They are particularly useful in phase detectors in digital circuits, arithmetic operations and error detection & correction circuits. The comparison of various circuit designs is also given. The proposed designs can be effectively used to realize more complex circuits. The simulations in the present work have been carried out using QCADesigner tool.

Effects of Peritonsillar Injection of Tramadol and Adrenaline before Tonsillectomy;
Beigh Zafarullah,ul Islam Mudasir,Ahmad Shakil,Pampori Rafiq Ahmad
Iranian Journal of Otorhinolaryngology , 2013,
Abstract: Introduction: Various hemostatic and analgesic agents and techniques have been used to reduce intraoperative and postoperative hemorrhage and pain in tonsillectomy.Aims and objective; The current study aimed to compare the effect of using adrenaline plus tramadol and normal saline in maintaining hemostasis and control of pain in cold dissection tonsillectomy. Materials and Methods: This prospective randomized study was conducted over a period of 10 months in department of otorhinolaryngology state medical college Srinagar. In the current study 46 patients planed for tonsillectomy were put into two groups. 23 patients in each group. In group A patients (study group) 4ml of solution containing 1:200000 adrenaline and 2mg/kg tramadol was injected in peritonsillar space. In group B patients (control group) 4ml of normal saline was injected in peritonsillar space. Results: It was found that the time required to achieve heamostasis and post operative pain was less in group A patients in comparison to Group B patients. There was no significant side effect or complications when adrenaline and tramadol were used. Conclusion: Large randomized controlled studies are needed to compare tramadol plus adrenaline infiltration with other heamostatic and analgesics, but the current study indicated that Tramadol plus adrenaline infiltration could be an effective method to reduce the post operative pain , operative time and time to achieve heamostasis in tonsillectomy surgeries. Therefore the use of Tramadol plus adrenaline infiltration should be further promoted and implemented as routine use in tonsillectomy surgeries.
3D Depth Measurement for Holoscopic 3D Imaging System  [PDF]
Eman Alazawi, Mohammad Rafiq Swash, Maysam Abbod
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.46005
Abstract: Holoscopic 3D imaging is a true 3D imaging system mimics fly’s eye technique to acquire a true 3D optical model of a real scene. To reconstruct the 3D image computationally, an efficient implementation of an Auto-Feature-Edge (AFE) descriptor algorithm is required that provides an individual feature detector for integration of 3D information to locate objects in the scene. The AFE descriptor plays a key role in simplifying the detection of both edge-based and region-based objects. The detector is based on a Multi-Quantize Adaptive Local Histogram Analysis (MQALHA) algorithm. This is distinctive for each Feature-Edge (FE) block i.e. the large contrast changes (gradients) in FE are easier to localise. The novelty of this work lies in generating a free-noise 3D-Map (3DM) according to a correlation analysis of region contours. This automatically combines the exploitation of the available depth estimation technique with edge-based feature shape recognition technique. The application area consists of two varied domains, which prove the efficiency and robustness of the approach: a) extracting a set of setting feature-edges, for both tracking and mapping process for 3D depthmap estimation, and b) separation and recognition of focus objects in the scene. Experimental results show that the proposed 3DM technique is performed efficiently compared to the state-of-the-art algorithms.
Digital Refocusing: All-in-Focus Image Rendering Based on Holoscopic 3D Camera  [PDF]
Obaidullah Abdul Fatah, Peter Lanigan, Amar Aggoun, Mohammad Rafiq Swash
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.46003
Abstract: This paper presents an innovative method for digital refocusing of different point in space after capturing and also extracts all-in-focus image. The proposed method extracts all-in-focus image using Michelson contrast formula hence, it helps in calculating the coordinates of the 3D object location. With light field integral camera setup the scene to capture the objects precisely positioned in a measurable distance from the camera therefore, it helps in refocusing process to return the original location where the object is focused; else it will be blurred with less contrast. The highest contrast values at different points in space can return the focused points where the objects are initially positioned as a result; all-in-focus image can also be obtained. Detailed experiments are conducted to demonstrate the credibility of proposed method with results.
Dynamic Hyperlinker: Innovative Solution for 3D Video Content Search and Retrieval  [PDF]
Mohammad Rafiq Swash, Amar Aggoun, Obaidullah Abdul Fatah, Bei Li
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.46002
Abstract: Recently, 3D display technology, and content creation tools have been undergone rigorous development and as a result they have been widely adopted by home and professional users. 3D digital repositories are increasing and becoming available ubiquitously. However, searching and visualizing 3D content remains a great challenge. In this paper, we propose and present the development of a novel approach for creating hypervideos, which ease the 3D content search and retrieval. It is called the dynamic hyperlinker for 3D content search and retrieval process. It advances 3D multimedia navigability and searchability by creating dynamic links for selectable and clickable objects in the video scene whilst the user consumes the 3D video clip. The proposed system involves 3D video processing, such as detecting/tracking clickable objects, annotating objects, and metadata engineering including 3D content descriptive protocol. Such system attracts the attention from both home and professional users and more specifically broadcasters and digital content providers. The experiment is conducted on full parallax holoscopic 3D videos “also known as integral images”.
Clinical Predictors for Successful Uvulopalatopharyngoplasty in the Management of Obstructive Sleep Apnea
Aamir Yousuf,Zafarullah Beigh,Raja Salman Khursheed,Aleena Shafi Jallu,Rafiq Ahmad Pampoori
International Journal of Otolaryngology , 2013, DOI: 10.1155/2013/290265
Abstract: Objective. To assess the clinical parameters for successful uvulopalatopharyngoplasty in the management of obstructive sleep apnoea syndrome documented with pre- and postoperative polysomnography. Materials and Methods. A study group of 50 patients diagnosed as having OSA by full night polysomnography were assessed clinically and staged on basis of Friedman staging system. BMI and neck circumference were considered, and videoendoscopy with Muller’s maneuver was done in all to document the site of obstruction. The study group divided into surgical and nonsurgical ones. Twenty-two patients out of fifty were then selected for uvulopalatopharyngoplasty. The selection of surgical group was done primarily on basis of clinical parameters like neck circumference, Friedman stage of the patient and site, and/or level of obstruction of patient. Postoperative polysomnography was done six months after surgery to document the change in AHI score. Result. The study group consists of fifty patients with mean age of years. UPPP was done in twenty-two, and the result of the surgery as defined by 50% reduction in preoperative AHI with postoperative AHI < 20/h was seen to be 95.2%. Postoperative change in AHI done after 6-month interval was seen to be statistically significant with P value < 0.001. Conclusion. UPPP is ideal option for management of obstructive sleep apnoea syndrome in properly selected patients on the basis of Friedman stage and site of obstruction detected by videoendoscopy with Muller’s maneuver. 1. Introduction Obstructive sleep apnea (OSA) is a common condition, affecting 4% of men and 2% of women [1]. Currently the condition is diagnosed by history, physical examination, imaging studies, and polysomnography. Common symptoms of the condition have limited predictive value in identifying patients with OSA. The upper airway is the main anatomical site responsible for OSA. Clinical examination may point to severe retrognathia, hypertrophic tonsils, macroglossia and redundant pillars, elongated uvula, and a crowded oropharynx [2]. Endoscopic investigations have been performed in awake as well as in sleeping patients, with the pharynx in relaxed or active states, but their predictive value remains limited, both for diagnostic purposes and for identifying patients who may benefit from surgery [3]. The otolaryngologist has the unique opportunity to examine the palate, pharynx, and neck of the patient and suspect OSA when appropriate. Diagnosis of a disease is based on clinical symptoms and physical findings and is corroborated by laboratory examinations.
Toxicological Study of Dimlor (A Mixture of Dimethoate and Chlorpyrifos) Against Corn Leaf Aphid, Rhopalosiphum maidis. (Fitch) under Different Micro-climatic Conditions

Seema Tahir,Tahir Anwar,Mohammad Rafiq Khan,Shaugafta Aziz
Pakistan Journal of Biological Sciences , 1999,
Abstract: Efficacy of Dimlor 662 EC was monitored against corn leaf aphid, Rhopalosiphum maidis (Fitch) under three different micro-climatic conditions i.e seedling of maize sown on plastic pots covered with glass chimneys, seedling in test tubes, and maize leaves placed on petri dishes. Maize leaves and seedling were painted with serial dilutions i.e 0.0003, 0.0006, 0.0012, 0.0025, 0.0050 and 0.01 percent. It was found effective and statistically non significant in all micro-climatic conditions. A linear regression model was developed between concentration and percentage mortality. The LC90 were calculated as 0.0024, 0.0041 and 0.005 per cent, respectively. This Study will help in determining appropriate dosage of insecticide for the aphid control and would be beneficial in resistance monitoring, IPM development, and product screening.
Variability and Correlations Studies for Total Iron and Manganese Contents of Chickpea (Cicer arietinum L.) High Yielding Mutants
Mohammad Imran Kozgar,Samiullah Khan,Mohd Rafiq Wani
American Journal of Food Technology , 2012,
Abstract: Increased malnutrition and food insecurity for the past several years in countries, like India, is point of great concern. Present study was undertaken to reveal the potential role of mutagenesis to induce genetic variability of total seed Fe (μg g-1) and Mn (μg g-1) contents and their correlations to the yield/plant (g) in chickpea. Fe and Mn deficiencies are usually responsible for major malnutrition conditions, while lower yield of crops results to food insecurity. Seeds of chickpea were treated with ethylmethane sulphonate (EMS), gamma rays and their combinations and studied their effects on the components of variation for yield/plant, the total seed Fe and Mn contents. Six high yielding mutants were isolated in M2 generation and their Fe and Mn contents were evaluated. Positive correlation was seen between total Fe and Mn contents to yield in the isolated mutants at lower doses of mutagen while the correlation between Fe to Mn contents was found to be negative.
The Influence of LOS Components on the Statistical Properties of the Capacity of Amplify-and-Forward Channels  [PDF]
Gulzaib RAFIQ, Matthias PATZOLD
Wireless Sensor Network (WSN) , 2009, DOI: 10.4236/wsn.2009.11002
Abstract: Amplify-and-forward channels in cooperative networks provide a promising improvement in the network coverage and system throughput. Under line-of-sight (LOS) propagation conditions in such cooperative networks, the overall fading channel can be modeled by a double Rice process. In this article, we have stud-ied the statistical properties of the capacity of double Rice fading channels. We have derived the analytical expressions for the probability density function (PDF), cumulative distribution function (CDF), level- crossing rate (LCR), and average duration of fades (ADF) of the channel capacity. The obtained results are studied for different values of the amplitudes of the LOS components in the two links of double Rice fading channels. It has been observed that the statistics of the capacity of double Rice fading channels are quite dif-ferent from those of double Rayleigh and classical Rice fading channels. Moreover, the presence of an LOS component in any of the two links increases the mean channel capacity and the LCR of the channel capacity. The validity of the theoretical results is confirmed by simulations. The results presented in this article can be very useful for communication system designers to optimize the performance of cooperative networks in wireless communication systems.
Threshold Voltage Sensitivity to Metal Gate Work-Function Based Performance Evaluation of Double-Gate n-FinFET Structures for LSTP Technology  [PDF]
M. Mustafa, Tawseef A. Bhat, M. R. Beigh
World Journal of Nano Science and Engineering (WJNSE) , 2013, DOI: 10.4236/wjnse.2013.31003
Abstract:

This paper investigates the threshold voltage sensitivity to metal gate work-function for n-channel double gate fin field-effect transistor (FinFET) structures and evaluates the short channel performance of the device using threshold voltage dependence on metal gate work-function analysis. We carried out the study for a double gate n-channel fin field-effect transistor (n-FinFET) with parameters as per the projection report of International Technology Roadmap for Semiconductors, ITRS-2011 for low standby power (LSTP) 20 nm gate length technology node. In the present study device simulation have been carried out using PADRE simulator from MuGFET, which is based on the drift-diffusion theory. Our results show the accuracy and validity of classical drift-diffusion simulation results for transistor structures with lateral dimensions 10nm and above. The subthreshold behavior of device improves with increased metal gate work-function. The results also show that a higher gate work-function (≥5 eV) can fulfill the tolerable off-current as projected in ITRS 2011 report. The SCE in FinFET can reasonably be controlled and improved by proper adjustment of the metal gate work-function. DIBL is reduced with the increase in gate work function.

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