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Search Results: 1 - 10 of 12845 matches for " Mohammad Zakareya "
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Handwritten Numeric and Alphabetic Character Recognition and Signature Verification Using Neural Network  [PDF]
Md. Hasan Hasnain Nashif, Md. Badrul Alam Miah, Ahsan Habib, Autish Chandra Moulik, Md. Shariful Islam, Mohammad Zakareya, Arafat Ullah, Md. Atiqur Rahman, Md. Al Hasan
Journal of Information Security (JIS) , 2018, DOI: 10.4236/jis.2018.93015
Abstract: Handwritten signature and character recognition has become challenging research topic due to its numerous applications. In this paper, we proposed a system that has three sub-systems. The three subsystems focus on offline recognition of handwritten English alphabetic characters (uppercase and lowercase), numeric characters (0 - 9) and individual signatures respectively. The system includes several stages like image preprocessing, the post-processing, the segmentation, the detection of the required amount of the character and signature, feature extraction and finally Neural Network recognition. At first, the scanned image is filtered after conversion of the scanned image into a gray image. Then image cropping method is applied to detect the signature. Then an accurate recognition is ensured by post-processing the cropped images. MATLAB has been used to design the system. The subsystems are then tested for several samples and the results are found satisfactory at about 97% success rate. The quality of the image plays a vital role as the images of poor or mediocre quality may lead to unsuccessful recognition and verification.
Revision of a nonunited subtrochanteric femoral fracture around a failed intramedullary nail with the use of RIA products, BMP-7 and hydroxyapatite: a case report
Christopher Tzioupis, Pavlos Panteliadis, Zakareya Gamie, Eleftherios Tsiridis
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-87
Abstract: We report the case of an 80-year-old Caucasian woman with a subtrochanteric fracture originally treated using a trochanteric gamma nail which failed, resulting in a nonunion and fracture of its proximal end. The nonunion was revised with the removal of the broken trochanteric gamma nail, application of a condylar blade plate, ipsilateral Reamer/Irrigator/Aspirator autografting, recombinant human bone morphogenetic protein-7 and injectable hydroxyapatite cement. The fracture united fully at ten months following revision surgery, with no signs of femoral head avascular necrosis at 18-month follow-up.The essential requirements for success when revising a nonunited fracture are to provide anatomical reduction, mechanical stability, bone defect augmentation and biological stimulation to achieve healing. Current advances in molecular biology, such as recombinant human bone morphogenetic protein-7, and biotechnology such as the Reamer/Irrigator/Aspirator system and hydroxyapatite injectable cement can improve patient outcomes over the use of our traditional revision techniques.Most fractures of the subtrochanteric region of the femur heal when treated using contemporary methods of internal fixation [1]. Improved understanding of the biomechanics of this region has shifted treatment toward the use of intramedullary devices (IMD) as the shorter-levered arm on the proximal fixation results in greater load sharing and less bending movement across the fracture and implant [2,3], reducing the rate of implant failure [2,4]. The overall incidence of failure for any type of fixation and subsequent nonunion of subtrochanteric fractures varies from 7% to 20% [5]. Complications occur mainly in patients with poor bone quality, unfavorable fracture patterns and suboptimal positioning of the fixation implant [1,5]. IMD complications include femoral shaft fracture below the tip of the IMD, collapse of the fracture and cutting out of the femoral neck screw, for which reoperation is require
Posterior reversible encephalopathy syndrome in a child with cyclical vomiting and hypertension: a case report
Zakareya Gamie, Akheel Rizwan, Frances G Balen, Michael Clarke, Mohammed M Hassoon
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-137
Abstract: A 10-year-old Caucasian girl who was hospitalized due to recurrent vomiting was diagnosed as having posterior reversible encephalopathy syndrome after an initial diagnosis of cyclical vomiting and hypertension was made.Posterior reversible encephalopathy syndrome is a rare disorder in children. Early recognition of characteristic radiological features is key to the diagnosis as clinical symptoms may be non-specific or mimic other neurological illnesses. To the best of our knowledge this is the first case to report an association between posterior reversible encephalopathy syndrome, cyclical vomiting and hypertension. Furthermore, in this case, the resolution of the abnormalities found on magnetic resonance imaging over time did not appear to equate with clinical recovery.Posterior reversible encephalopathy syndrome (PRES) is characterized by headache, nausea, vomiting, seizures and visual disturbances [1]. PRES is commonly associated with a sudden increase in blood pressure (BP) [1]. The MRI findings have been well characterized and include vasogenic edema in the white matter of the posterior regions of the cerebral hemispheres, particularly in the parieto-occipital regions [2]. PRES is more commonly reported in adults. The cause of PRES is thought to be multi-factorial, and it may develop in patients who have hypertension, renal disease, or who are immunosuppressed [1,3]. PRES is usually reversible and prompt recognition is important [1]. In the pediatric population, PRES has been associated with chronic renal disease [4], the administration of chemotherapeutic agents [5], adrenocortical disease and Cushing's syndrome [6].We present the case of a 10-year-old girl found to have PRES in association with cyclical vomiting and hypertension.A 10-year-old Caucasian girl presented to our department with ongoing symptoms of vomiting, non-specific abdominal pain and hypertension. She had been admitted about 15 times over a three year period with episodic attacks of frequent
Lower respiratory tract infection and rapid expansion of an abdominal aortic aneurysm: a case report
Steven Naylor, Zakareya Gamie, Ravinder S Vohra, Sapna Puppala, Patrick J Kent, D Scott
Journal of Medical Case Reports , 2010, DOI: 10.1186/1752-1947-4-333
Abstract: Here we present a case of a rapidly expanding abdominal aortic aneurysm in a 68-year-old Caucasian man with a concomitant lower respiratory tract infection and systemic sepsis requiring intensive monitoring and urgent endovascular intervention. Our patient had an uncomplicated post-operative recovery and a follow-up computed tomography scan at one month demonstrated no evidence of an endoleak.This case highlights the potential association between pulmonary sepsis and rapid abdominal aortic aneurysm expansion. In such cases, a policy of frequent monitoring should be adopted to identify those patients requiring definitive management.Studies suggest that an abdominal aortic aneurysm (AAA) expands on average at 0.25 cm per annum [1]. This is proportional to the size of the AAA [2,3], and has been linked to factors such as smoking, hypertension, advanced age and cardiac disease [4]. There are rare reports that aneurysmal disease can expand in the presence of lung sepsis over a few months [5,6] . The presence of pulmonary disease may increase inflammatory mediators and result in weakening of the aortic wall [5]. Here we report the case of a sudden expansion of an infra-renal AAA in a patient with a lower respiratory tract infection (LRTI) and sepsis.A 68-year-old Caucasian man with a known infra-renal AAA was admitted with shortness of breath, a presumed community acquired LRTI and increasing back pain and epigastric discomfort. His past medical history included ischemic heart disease and he underwent a coronary artery bypass graft in 1987. He smoked approximately 20 cigarettes per day for 20 years. The AAA had been under six-monthly surveillance since 2005. At that time, the maximum diameter was 4.9 cm and it had grown to 5.2 cm over a period of one year. The most recent ultrasound scan was performed two months prior to admission and at that time the maximal diameter of the AAA was 5.4 cm. Our patient was hemodynamically stable, but pyrexial and hypoxic. Clinical examina
Exploring the Catalytic Activity of Zirconia, Zirconia Supported Metals and Metal Oxides for Oxidation of Phenol  [PDF]
Mohammad Sadiq, Mohammad Ilyas
Modern Research in Catalysis (MRC) , 2012, DOI: 10.4236/mrc.2012.12004
Abstract: Catalytic oxidation/degradation of phenol with molecular oxygen in aqueous medium by Zirconia, zirconia supported metals and metal oxides at low temperature were studied in a three necked batch reactor. The catalysts prepared were characterized by modern techniques like XRD, SEM and EDX. The activities of different catalysts for the oxidation of phenol in aqueous medium were found to be in the order; Pt-Pd/ZrO2 > Bi-Pt/ZrO2 > Bi-Pd/ZrO2> Pt/ZrO2 > Pd/ZrO2 > Cu/ZrO2> Mn/ZrO2 > Bi/ZrO2. The enhanced catalytic activity of Bi-Pt/ZrO2 is attributed to Bi which in contact with Pt particles promotes its catalytic activity. In short, catalytic oxidation was found to be an effective tool, for the removal of phenol, from industrial waste water.
Glanular Anterior Urethral Valve; A Case Report of an Unusual Cause of Neonatal Urinary Retention  [PDF]
Mohammad Aminu Mohammad
Open Journal of Pediatrics (OJPed) , 2016, DOI: 10.4236/ojped.2016.62025
Abstract: Anterior urethral valve is an uncommon abnormality whose etiology is uncertain, unlike in the case of posterior urethral valve. Glanular anterior urethral valve is even rarer. We present an unusual case of anterior urethral valve, which presented with acute urinary retention and was successfully managed with excision and glans reconstruction. A history of poor stream and dribbling, recurrent urinary tract infections and palpable penile or peno-scrotal mass strongly points to the diagnosis of anterior urethral valve. A voiding cystourethrogramme confirms the diagnosis. It can cause early proximal urinary tract damage and renal failure if not intervened in time. Early surgical intervention will prevent the onset of uremia. Transurethral resection is the treatment of choice.
Pectin-Based Biodegradable Hydrogels with Potential Biomedical Applications as Drug Delivery Systems  [PDF]
Mohammad Sadeghi
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2011, DOI: 10.4236/jbnb.2011.21005
Abstract: In this work, synthesis and swelling behavior of a superabsorbent hydrogel based on Pectin (Pc) and polyacrylonitrile (PAN) were investigated. A mechanism for hydrogel formation was proposed and the structure of the product was es-tablished using FTIR spectroscopy. The Pc-poly (sodium acrylate-co-acrylamide) hydrogel exhibited a pH-responsive swelling-deswelling behavior at pH’s 2 and 8. This on-off switching behavior provides the hydrogel with the potential to control delivery of bioactive agents. Release profiles of ibuprofen (IBU), a poor water-soluble drug, from the hydro-gels were studied under both simulated gastric and intestinal pH conditions.
Context-Dependent Data Envelopment Analysis with Interval Data  [PDF]
Mohammad Izadikhah
American Journal of Computational Mathematics (AJCM) , 2011, DOI: 10.4236/ajcm.2011.14031
Abstract: Data envelopment analysis (DEA) is a non-parametric method for evaluating the relative efficiency of decision making units (DMUs) on the basis of multiple inputs and outputs. The context-dependent DEA is introduced to measure the relative attractiveness of a particular DMU when compared to others. In real-world situation, because of incomplete or non-obtainable information, the data (Input and Output) are often not so deterministic, therefore they usually are imprecise data such as interval data, hence the DEA models becomes a nonlinear programming problem and is called imprecise DEA (IDEA). In this paper the context-dependent DEA models for DMUs with interval data is extended. First, we consider each DMU (which has interval data) as two DMUs (which have exact data) and then, by solving some DEA models, we can find intervals for attractiveness degree of those DMUs. Finally, some numerical experiment is used to illustrate the proposed approach at the end of paper.
Multilayer Hex-Cells: A New Class of Hex-Cell Interconnection Networks for Massively Parallel Systems  [PDF]
Mohammad Qatawneh
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.411086
Abstract: Scalability is an important issue in the design of interconnection networks for massively parallel systems. In this paper a scalable class of interconnection network of Hex-Cell for massively parallel systems is introduced. It is called Multilayer Hex-Cell (MLH). A node addressing scheme and routing algorithm are also presented and discussed. An interesting feature of the proposed MLH is that it maintains a constant network degree regardless of the increase in the network size degree which facilitates modularity in building blocks of scalable systems. The new addressing node scheme makes the proposed routing algorithm simple and efficient in terms of that it needs a minimum number of calculations to reach the destination node. Moreover, the diameter of the proposed MLH is less than Hex-Cell network.
Cloud Computing as an Innovation in GIS & SDI: Methodologies, Services, Issues and Deployment Techniques  [PDF]
Mohammad Naghavi
Journal of Geographic Information System (JGIS) , 2012, DOI: 10.4236/jgis.2012.46062
Abstract: Cloud computing is one of the main issues of interest to the scientific community of the spatial data. A cloud is referred to computing infrastructure for a representation of network. From the perspective of providers, the main characteristics of cloud computing is being dynamic, high power in computing and storage. Also cloud computing is a cost benefit and effective way for representation of web-based spatial data and complex analysis. Furthermore, cloud computing is a way to facilitate distributed computing and store different data. One of the main features of cloud computing is ability in powerful computing and dynamic storage with an affordable expense and secure web. In this paper we further investigate the methodologies, services, issues and deployed techniques also, about situation of cloud computing in the past, present and future is probed and some issues concerning the security is expressed. Undoubtedly cloud computing is vital for spatial data infrastructure and consequently the cloud computing is able to expand the interactions for spatial data infrastructure in the future.


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