Papers by MUHAMMAD HAMZA MEMON
Sukkur IBA Journal of Computing and Mathematical Sciences, 2022
Managing interference in the multi-radio networks is critical challenge; problem becomes even mor... more Managing interference in the multi-radio networks is critical challenge; problem becomes even more serious in 2.4 GHz band due to minimal availability of orthogonal channels. This work attempts to propose a channel assignment scheme for interference zones of 2.4 GHz backhaul of Wireless Mesh Networks (WMN). The static nodes of Infrastructure based Backhaul employing directional antennas to connect static nodes, orthogonal channel zones introducing Interference are formatted with the selection of single tire direct hop and two tier directional hopes. The effort maintain the orthogonality of channels on system thus reduce the co-channel interference between inter flow and intra flow links. Group of non-overlapping channels of selected band are obtained by a mathematical procedure, interference is modeled by directed graph and Channel assignment is carried out with the help of greedy algorithms. Experimental analysis of the technical proposal is done by simulation through OPNET 14. Our...
Complex., 2021
End-to-end application performance and throughput of vehicular cognitive transport control protoc... more End-to-end application performance and throughput of vehicular cognitive transport control protocol depend on how efficiently the segments (TCP header) are being transmitted from source to destination. One way to enhance the performance of vehicular cognitive TCP protocol is by reducing the packet drops in between the source and destination. In general, packet drops occur in between the source and destination of Cognitive Radio Vehicular Ad Hoc Network (CR-VANET) because of spectrum handoff or cognitive node handoff, or network congestion. In this paper, we focus on enhancing the performance of cognitive TCP protocol through “cognitive AODV routing protocol with the spectrum handoff mechanism.” In the proposed work, channel-route control messages of cognitive AODV routing protocol are updated with the support of spectrum handoff which helps to provide the backup opportunistic channel during PU active and helps to reduce the end-to-end spectrum handoff packet drops. Simulation result...
IEEE Solid-State Circuits Magazine, 2020
IEEE Solid-State Circuits Magazine, 2020
2 0 2 0 IEEE SOLID-STATE CIRCUITS MAGAZINE T through social media and classes to ensure participa... more 2 0 2 0 IEEE SOLID-STATE CIRCUITS MAGAZINE T through social media and classes to ensure participation. The event began with a traditional lighting of the lamp and an invocation song performed by a student. Dr. Subhash Kulkarni, head of the Electronics Department, welcomed the speakers and discussed the benefits of joining the Chapter. He was followed by Dr. Bhawani Shankar, a student of Prof.
IEEE Solid-State Circuits Magazine, 2019
IEEE Access, 2019
The patient of Parkinson's disease (PD) is facing a critical neurological disorder issue. Efficie... more The patient of Parkinson's disease (PD) is facing a critical neurological disorder issue. Efficient and early prediction of people having PD is a key issue to improve patient's quality of life. The diagnosis of PD specifically in its initial stages is extremely complex and time-consuming. Thus, the accurate and efficient diagnosis of PD has been a significant challenge for medical experts and practitioners. In order to tackle this issue and to accurately diagnosis the patient of PD, we proposed a machine-learning-based prediction system. In the development of the proposed system, the support vector machine (SVM) was used as a predictive model for the prediction of PD. The L1-norm SVM of features selection was used for appropriate and highly related features selection for accurate target classification of PD and healthy people. The L1-norm SVM produced a new subset of features from the PD dataset based on a feature weight value. For the validation of the proposed system, the K -fold cross-validation method was used. In addition, the metrics of performance measures, such as accuracy, sensitivity, specificity, precision, F1 score, and execution time, were computed for model performance evaluation. The PD dataset was in this paper. The optimal accuracy achieved the best subset of the selected features that might be due to various contributions of the PD features. The experimental findings of this paper suggest that the proposed method can be used to accurately predict the PD and can be easily incorporated in healthcare for diagnosis purpose. Currently, the computer-based assisted predictive system is playing an important role to assist in PD recognition. In addition, the proposed approach fills in a gap on feature selection and classification using voice recordings data by properly matching the experimental design.
Mobile Information Systems, 2018
Heart disease is one of the most critical human diseases in the world and affects human life very... more Heart disease is one of the most critical human diseases in the world and affects human life very badly. In heart disease, the heart is unable to push the required amount of blood to other parts of the body. Accurate and on time diagnosis of heart disease is important for heart failure prevention and treatment. The diagnosis of heart disease through traditional medical history has been considered as not reliable in many aspects. To classify the healthy people and people with heart disease, noninvasive-based methods such as machine learning are reliable and efficient. In the proposed study, we developed a machine-learning-based diagnosis system for heart disease prediction by using heart disease dataset. We used seven popular machine learning algorithms, three feature selection algorithms, the cross-validation method, and seven classifiers performance evaluation metrics such as classification accuracy, specificity, sensitivity, Matthews’ correlation coefficient, and execution time. T...
Today enterprises are organized in network of several distributed production sites in a geographi... more Today enterprises are organized in network of several distributed production sites in a geographical area more and more extended, where sites use the intermediary products of other sites to manufacture the final products. Therefore they transport raw materials and intermediate products between plants for manufacturing. Additionally these enterprises have to distribute their final products to far away consumers. In this context, it is difficult and not cost effective for these enterprises to manage their own transport vehicles. Thus they outsource their transportation tasks to third party logistics enterprises. These enterprises group transport orders of multiple enterprises together in order to reduce cost and travels number. The objective of this paper is to present a distributed architecture planning of transportation activities aimed at better utilize transport resources by grouping several orders of transport for each effective displacement .
International Journal of Innovation and Applied Studies, Nov 2, 2014
Pakistaniaat a Journal of Pakistan Studies, 2009
Iranian journal of public health, 2014
Malaria is the second most frequent clinically suspected disease entity after acute respiratory t... more Malaria is the second most frequent clinically suspected disease entity after acute respiratory tract infection in developing countries. Active malarial transmission occurs throughout the year, while aggressive out bursts of disease are seen mainly during and after the 'monsoon' season. This study aimed to determine the morbidity and mortality associated with malaria during flood at Isra University Hospital, Hyderabad. This prospective observational study was done at Isra University Hospital Hyderabad during monsoon flooding from July 2011 to October 2011. All 883 patients presented with symptoms of malaria (fever, headache, and vomiting) were evaluated and diagnostic tool ICT-MP was used for the detection of malaria parasite among them. Seventy four (8.38%) patients diagnosed for malaria. The mean age and SD was 30.11 ± 1.67 years. Overall mortality due to malaria observed (18.9%). Mortality rate significantly observed high in pregnant women (0.005) and in those patients wh...
The present study was carried out in a feeding trial of 42 days, 120 broiler chicks were reared a... more The present study was carried out in a feeding trial of 42 days, 120 broiler chicks were reared at experimental station were divided into four groups, A, B, C and D for feeding iso-nitrogenous and iso-caloric mash rations, having 0, 33, 67 and 100 % feather meal as replacement of fish meal. The average final live body weight of groups A, B, C and D was 2221.1, 2205, 2196.05 and 2187.15 grams per bird, respectively. The difference of live body weight between the groups was non-significant (P<0.05). Results of feed and water consumption showed similar pattern. Average feed consumed was 3687, 3706, 3728 and 3744 grams per boiler for group A, B, C and D, respectively. Water consumption recorded per boiler was 9270, 9289, 9300 and 9316 ml of group A, B, C and D. The differences in average carcass weight and giblets weight were also non-significant (P<0.05). Carcass weight of group A 1332 grams was heaviest followed by B, C and D, weighing 1322, 1314 and 1300 grams per broiler, resp...
Journal of Ayub Medical College, Abbottabad : JAMC
Percutaneous mitral valvuloplasty (PMV) is still the treatment of choice in selected cases of mit... more Percutaneous mitral valvuloplasty (PMV) is still the treatment of choice in selected cases of mitral stenosis (MS). Multitrack balloon (MTB) catheter is one of the techniques used for PMV with optimal results. We describe a novel refinement of appropriate balloon sizing and wire placement to reduce mitral regurgitation (MR) and Left ventricular (LV) apical perforation, respectively. Ninety four consecutive patients with moderate to severe rheumatic mitral stenosis (MS) were selected for PMV with MTB catheter. Balloon sizing was done by effective balloon dilatation area (EBDA), using standard geometric formula. 0.35" PMV wire was placed in aortic arch /ascending aorta (AA) to avoid LV apical perforation. Mild MR was present in 28(29.8%). Post-procedure MR was present in 50(53.2%). Out of 50 MR cases 44(88%) had mild and 6(12.0%) had moderate MR. No patient had severe MR. With placement of wire in AA and arch of aorta none of the patients developed complication of LV apical perfo...
JPMA. The Journal of the Pakistan Medical Association, 2010
To report the results of tension-free repair of incisional and ventral hernias by stoppa's su... more To report the results of tension-free repair of incisional and ventral hernias by stoppa's sublay technique. This study included 200 Patients, undergoing sublay mesh repair for incisional and ventral hernias (Para-unbilical, epigastric, right sub costal and lumbar hernias) at Ghulam Muhammad Mahar Medical College and Hira Medical Center Sukkur, during a period of four years from January 2005 to December 2008. Wound infection was found in 6.5% and seroma formation in 2.5%. Mortality was 0.5%. No recurrence was seen during the follow-up period of 2 years. No septic mesh was removed in the series. The tension-free repair of incisional and ventral hernias with stoppa's sublay mesh repair technique is safe, effective and an easy procedure with acceptable morbidity and no recurrence.
Postgraduate Medical Journal, 1996
An ominous complication of acute myocardial infarction 311 Main differences between true and fals... more An ominous complication of acute myocardial infarction 311 Main differences between true and false ventricular aneurysms Pseudoaneutysm True aneurysm rare common myocardium ruptured myocardium locally stretched narrow base wide base (most, but not all) no myocardial elements in wall myocytes +/-coronary arteries in wall high risk of rupture low risk of rupture surgical resection essential surgery indicated if resistant symptoms Box 3 formed without delay since these aneurysms, unlike true ventricular aneurysms, have a propensity to rupture regardless of size or symptoms.7'8 Conclusions VPA formation is an ominous complication of myocardial infarction. If diagnosed, surgical resection, with coronary artery bypass grafting if indicated, should be performed without delay. If left untreated, a VPA is likely to rupture with an invariably fatal outcome. Final diagnosis Left ventricular pseudoaneurysm.
Journal of vascular and interventional neurology, 2008
BACKGROUND AND PURPOSE: For unclear reasons the blood pressure in acute stroke patients is elevat... more BACKGROUND AND PURPOSE: For unclear reasons the blood pressure in acute stroke patients is elevated and falls over next few days. Stress in emergency department has been suggested as an etiology. To study this, we compared the prevalence of elevated blood pressure in adult patients presenting to the emergency department (ED) with hypertension related diseases. METHODS: We used data from the 2003 National Hospital Ambulatory Medical Care Survey (NHAMCS). Patients with clinical conditions requiring specific management of elevated blood pressure, namely, stroke, acute coronary syndrome, heart failure and traumatic brain injury were selected using ICD-9CM primary codes. Prevalence of acute systolic blood pressure (BP) ≥140 mmHg and ≥180 mmHg, and, systolic and diastolic BP≥140/90 mmHg and ≥180/110 mmHg were compared across the clinical conditions listed above. RESULTS: The prevalence of BP≥140/90 mmHg on presentation to ED was significantly higher for stroke patients (78%) compared to p...
Journal of Diabetes Research, 2013
Purpose. The study was aimed to investigate the frequency of diabetes mellitus type 2 in patients... more Purpose. The study was aimed to investigate the frequency of diabetes mellitus type 2 in patients infected with chronic hepatitis C virus and its association with cirrhosis.Patients and Methods. This prospective case series was conducted at Section of Gastroenterology and Hepatology, Isra University Hospital, Hyderabad, over a period of 4 months from June 2009 to October 2009. Hepatitis C virus seropositive patients who were older than 18 years, diabetic or nondiabetic, were included. Basic demographic data collected by questionnaire and laboratory investigations including fasting blood glucose levels, serum cholesterol, and liver function tests were done. A logistic regression model was used to explore the association between diabetic and nondiabetic HCV seropositives and type 2 diabetes mellitus with cirrhosis.Results. A total of 361 patients with hepatitis C were analyzed; the prevalence of type 2 diabetes mellitus in HCV patients was 31.5%. Out of the total number of the partici...
Journal of the National Cancer Institute, 2007
Previous randomized controlled trials that used the two-drug chemotherapy regimen of cisplatin an... more Previous randomized controlled trials that used the two-drug chemotherapy regimen of cisplatin and doxorubicin as the conventional arm showed no evidence of benefit from an increase in the number of agents or the length of treatment. It was then proposed that survival could be improved by increasing the planned dose intensity of cisplatin and doxorubicin.
Journal of neuroimaging : official journal of the American Society of Neuroimaging, 2009
To report our initial experience in setting up a neuroendovascular service in a university-based ... more To report our initial experience in setting up a neuroendovascular service in a university-based comprehensive stroke center.
British Journal of Surgery, 2000
Background Acute pancreatitis is a catabolic illness and patients with the severe form have high ... more Background Acute pancreatitis is a catabolic illness and patients with the severe form have high metabolic and nutrient demands. Artificial nutritional support should therefore be a logical component of treatment. This review examines the evidence in favour of initiating nutritional support in these patients and the effects of such support on the course of the disease. Methods Medline and Science Citation Index searches were performed to locate English language publications on nutritional support in acute pancreatitis in the 25 years preceding December 1999. Manual cross-referencing was also carried out. Letters, editorials, older review articles and most case reports were excluded. Results and conclusion There is no evidence that nutritional support in acute pancreatitis affects the underlying disease process, but it may prevent the associated undernutrition and starvation, supporting the patient while the disease continues and until normal and sufficient eating can be resumed. The...
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Papers by MUHAMMAD HAMZA MEMON