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Search Results: 1 - 10 of 1291 matches for " Mahdi Emadi "
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Wavelet Density Estimation and Statistical Evidences Role for a GARCH Model in the Weighted Distribution  [PDF]
Mohammad Abbaszadeh, Mahdi Emadi
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.42061

We consider n observations from the GARCH-type model: Z = UY, where U and Y are independent random variables. We aim to estimate density function Y where Y have a weighted distribution. We determine a sharp upper bound of the associated mean integrated square error. We also make use of the measure of expected true evidence, so as to determine when model leads to a crisis and causes data to be lost.

Haematological and biochemical alterations caused by epidural and intramuscular administration of xylazine hydrochloride in dromedary camels (Camelus dromedarius)
Omid Azari,Mohammad Mahdi Molaei,Ladan Emadi,Ehsanollah Sakhaee
Veterinaria Italiana , 2012,
Abstract: This study was conducted in 16 healthy immature dromedary camels weighing 120-150 kg to evaluate and compare the effects of epidural and intramuscular injections of xylazine administered at 0.1 mg/kg and 0.2 mg/kg. Haematological parameters included haemoglobin, packed cell volume, total erythrocyte count and total leukocyte count. Biochemical parameters included alkaline phosphates, alanine aminotransferase, aspartate aminotransferase, blood urea nitrogen, creatinine and glucose. Parameters were measured at different intervals before (baseline) and after the administration of drugs. Our study showed that the effect of xylazine on haematological and biochemical parameters is dose-dependant and is also related to the route of administration. The low dose of xylazine administered using both intramuscular and epidural methods showed minimal effects, whereas high doses of the drug, especially when injected intramuscularly, caused greater changes in haematological and biochemical parameters.
A New Method for Variable Elimination in Systems of Inequations
Farhad Shirani Chaharsooghi,Mohammad Javad Emadi,Mahdi Zamanighomi,Mohammad Reza Aref
Mathematics , 2011,
Abstract: In this paper, we present a new method for variable elimination in systems of inequations which is much faster than the Fourier-Motzkin Elimination (FME) method. In our method, a linear Diophantine problem is introduced which is dual to our original problem. The new Diophantine system is then solved, and the final result is calculated by finding the dual inequations system. Our new method uses the algorithm Normaliz to find the Hilbert basis of the solution space of the given Diophantine problem. We introduce a problem in the interference channel with multiple nodes and solve it with our new method. Next, we generalize our method to all problems involving FME and in the end we compare our method with the previous method. We show that our method has many advantages in comparison to the previous method. It does not produce many of the redundant answers of the FME method. It also solves the whole problem in one step whereas the previous method uses a step by step approach in eliminating each auxiliary variable.
Achievable Rate Region for Multiple Access Channel with Correlated Channel States and Cooperating Encoders
Mahdi Zamanighomi,Mohammad Javad Emadi,Farhad Shirani Chaharsooghi,Mohammad Reza Aref
Mathematics , 2011,
Abstract: In this paper, a two-user discrete memoryless multiple-access channel (DM-MAC) with correlated channel states, each known at one of the encoders is considered, in which each encoder transmits independent messages and tries to cooperate with the other one. To consider cooperating encoders, it is assumed that each encoder strictly-causally receives and learns the other encoder's transmitted symbols and tries to cooperate with the other encoder by transmitting its message. Next, we study this channel in a special case; we assume that the common part of both states is known at both, hence encoders use this opportunity to get better rate region. For these scenarios, an achievable rate region is derived based on a combination of block-Markov encoding and Gel'fand-Pinsker coding techniques. Furthermore, the achievable rate region is established for the Gaussian channel, and it is shown that the capacity region is achieved in certain circumstances.
Noise Induced Vestibular Damage
Maryam Emadi
Audiology , 1999,
Abstract: There are increasing evidences about the vestibular damage caused by the exposure to noise. Histological and functional derangements of the vestibular system have been reported in laboratory animals exposed to high levels of noise. However, clinical series describe contradictory results with regard to vestibular disturbances in industrial workers and military personnel suffering from noise induced hearing loss (NIHL). Animal studies have proved that crista ampullaris bears the most disturbances, though some damages have been also detected in macula of the utricle and saccule and utricle. These changes have been induced due to acoustical pressure on the vestibular labyrinth. The findings from the experiments regarding vestibular function in patients suffering NIHL have shown a paramount diminish in vestibulo-occular Reflex (VOR). The correlation among NIHL, VOR and unilateral caloric weakness were statistically significant which can be due to a common mechanism of disturbances in the function of cochlea and vestibule.
Towards Economic Single-Phase Motor  [PDF]
Mahdi Alshamasin
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.59058

Studying of operation balance in single-phase induction motors is an issue of interest due to the need for reducing the power consumption and increasing the motors’ life. The paper focuses on improving the motor performance by balancing the stator phase operation for the most common-used connection diagrams of single-phase capacitor-run induction motors (SPCRIMs) and three-phase induction motors (TPIMs) operating from single-phase supply (SPS). Therefore, a mathematical model is used to balance the motor operation by varying the frequency supply voltage. Characteristics of balancing parameters are investigated, various methods of motor balancing are presented and comparisons were done among these balancing methods.

Effect of Shifting Cultivation on Distribution of Nutrient Elements and Carbohydrates Within Water-Stable Aggregates in Northern Iran
Mostafa Emadi,Majid Baghernejad,Mehdi Emadi
Pakistan Journal of Biological Sciences , 2008,
Abstract: This study attempts to evaluate the nutrient element and carbohydrate distribution within Water-Stable Aggregates (WSA) of two natural ecosystems, native forest and pasturelands, under different land uses. Soil samples were collected from depths of (0-20) cm in Typic Haploxeroll soils. The overall pattern indicated that Mean Weight Diameter (MWD) and WSA were greater in the pasture and forest soils compared with the adjacent cultivated soils and aggregates of >1.0 mm size were dominant in the uncultivated soils, whereas the cultivated soils comprised aggregates of the size <=0.5 mm. Distribution of organic carbon, nitrogen, phosphorus and carbohydrates within the WSA showed preferential enrichment of these parameters in the macroaggregate fraction (4.75-1.0 mm) for the uncultivated soils and microaggregate fraction (>0.25 mm) for the cultivated soils. Average distribution of total exchangeable bases within WSA showed that cultivation of forest pastureland soils significantly led to reduce in these nutrient in the 4.75-2.0 mm fraction and increase in concentration of these cations in <0.25 mm fraction. Since smaller aggregates are preferentially removed by erosion, this study emphasizes the need for sustainable soil management practices that they will minimize nutrient loss when forest or pastures lands are converted to cropland.
Effect of Turmeric Rhizome Powder on Immunity Responses of Broiler Chickens
M. Emadi,H. Kermanshahi
Journal of Animal and Veterinary Advances , 2012,
Abstract: In order to study the effect of Turmeric Rhizome Powder (TRP) on immunity responses in broiler chickens, in a completely randomised design, an experiment with 200 day-old Ross male broiler chickens from 0-49 days with 4 treatments and 5 replicates of 10 birds each was conducted. A corn-soybean meal based diet containing levels of TRP (0.00, 0.25, 0.50 and 0.75%) was used. For measuring immunity responses (white blood cell, immunoglobulins A, G and M), at 14 days of age, one bird from each replicate of treatments was challenged with 0.2 mL Sheep Red Blood Cell (SRBC, 5%) and blood samples were collected at 21 and 42 days of age. Inclusion of TRP significantly (p< 0.05) increased immunoglobulins IgA, IgM and IgG (IgY). TRP inclusion into the diets also significantly decreased the ratio of monocytes at 42 days of age (p< 0.05). Under the condition of this study, it was concluded that TRP might have some positive effects on immunity response and may be used as immune system fortification in broiler chickens.
Multicentric Astrocytoma Presenting withSupra- and Infratentorial Involvement: ACase Report
Farhad Emadi,Afshin Borhanihaghighi
Middle East Journal of Cancer , 2010,
Abstract: This report describes the case of a 56 year-old man with a history of diplopia. Hisbrain imaging showed multiple lesions with a metastatic appearance, however allinvestigations to determine the primary source of malignancy were negative. Thepatient underwent a brain biopsy, which was positive for anaplastic astrocytoma, arare tumor that should be considered in the differential diagnosis of secondary braintumors.
Effect of Turmeric Rhizome Powder on the Activity of Some Blood Enzymes in Broiler Chickens
M. Emadi,H. Kermanshahi
International Journal of Poultry Science , 2007,
Abstract: In order to study the effect of turmeric rhizome powder (TRP) on the activity of some blood enzymes in broiler chicken, a 49 days experiment using corn-soybean meal based diet containing four levels of TRP (0.0, 0.25, 0.50 and 0.75%) as treatments with five replicates in a completely randomized design was conducted. 200 Ross male broiler chicken from 0-49 days were housed in 20 pens and received feed and water ad-libitum. At 21 and 42 days of age, one blood serum sample from each replicate of treatment was collected. Inclusion of TRP significantly increased LDH and AST enzymes (P< 0.05). TRP in the diets also significantly decreased ALT and ALP enzymes (P< 0.05). Under the conditions of this study, it was concluded that TRP might have some positive effects on liver enzymes that directly or indirectly reflects a healthier liver status in broiler chickens.
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