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Search Results: 1 - 10 of 376 matches for " Noman SARWAR "
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Usman YOUSAF,Mohsin ALTAF,Noman SARWAR,Syed Ali Hassan SHAH
Management & Marketing , 2012,
Abstract: To study the influence of Perceived cost, risk, convenience and enjoyment on online consumer purchases. Being more convenient online shopping seems painless compared to in store shopping, why consumers are still reluctant to shop online?.A sample of 220 questionnaires was filled from different departments at University of Sargodha. Respondents were asked to fill the questionnaire based on four factors (Perceived cost, Perceived risk, Perceived convenience, Perceived enjoyment), there were 2 general questions. Out of 220, 207 questionnaires were returned. One sample test is applied in this study to check the reliability of independent variables. Analysis was also done on basis of gender and their ages. The most important factor out of four, which can persuade the customer's online buying decision, is delivery cost for purchased items and it has negative relationship with dependent variable, moreover perceived risk has also negative relationship with dependent one. Perceived convenience and Perceived enjoyment has positive relationship with online shopping preference. As online shopping is easier to do but due to extra delivery cost and risk factors consumers do not adopt online shopping and these factors should be minimized to promote online shopping. Online shopping should be promoted and to gain the consumer confidence, delivery cost and risk factor should be minimized. As online shopping is easier to do as compared to offline shopping but people still reluctant to use internet for online shopping, so to promote online shopping delivery cost and risk factor should be minimized to gain consumers attraction and confidence. People want to experience online shopping but it won’t be promoted until delivery cost and perceived risk factors be reduced. A little work has been done on exploring the factors that influence the online buying decision. These factors are called situational factors and include delivery charges, risk factors, convenience factors and enjoyment factors. In Pakistan consumers are not too much affiliated to online shopping as compared to European countries and not too much researches have been done related to online shopping in Pakistan , so this research been conducted to promote online shopping.
A new method of lung sounds filtering using modulated least mean square—Adaptive noise cancellation  [PDF]
Noman Qaid Al-Naggar
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.69106
Abstract: Advanced processing of lung sound (LS) recording is a significant means to separate heart sounds (HS) and combined low frequency noise from instruments (NI), with saving its characteristics. This paper proposes a new method of LS filtering which separates HS and NI simultaneously. It focuses on the application of least mean squares (LMS) algorithm with adaptive noise cancelling (ANC) technique. The second step of the new method is to modulate the reference input r1(n) of LMS-ANC to acquiesce combining HS and NI signals. The obtained signal is removed from primary signal (original lung sound recording-LS). The original signal is recorded from subjects and derived HS from it and it is modified by a band pass filter. NI is simulated by generating approximately periodic white gaussian noise (WGN) signal. The LMS-ANC designed algorithm is controlled in order to determine the optimum values of the order L and the coefficient convergence μ. The output results are measured using power special density (PSD), which has shown the effectiveness of our suggested method. The result also has shown visual difference PSD (to) normal and abnormal LS recording. The results show that the method is a good technique for heart sound and noise reduction from lung sounds recordings simultaneously with saving LS characteristics.
Modelling and Simulation of Pressure Controlled Mechanical Ventilation System  [PDF]
Noman Q. Al-Naggar
Journal of Biomedical Science and Engineering (JBiSE) , 2015, DOI: 10.4236/jbise.2015.810068
Abstract: A mathematical model of mechanical ventilator describes its behavior during artificial ventilation. This paper purposes to create and simulate Mathematical Model (MM) of Pressure Controlled Ventilator (PCV) signal. This MM represents the respiratory activities and an important controlled parameter during mechanical ventilation—Positive End Expiration Pressure (PEEP). The MM is expressed and modelled using periodic functions with inequalities to control the beginning of inspiration and expiration durations. The created MM of PCV signal is combined with an existing multi compartmental model of respiratory system that is modified and developed in the internal parameters—compliances (C) to test created MM. The created MM and model of respiratory system are constructed and simulated using Simulink package in MATLAB platform. The obtained simulator of mechnical ventilation system could potentially represent the pressure signal of PVC as a complete respiratory cycle and continuance waveform. This simulator is also able to reflect a respiratory mechanic by changing some input variables such as inspiration pressure (IP), PEEP and C, which are monitored in volume, flow, pressure and PV loop waveforms. The obtained simulator has provided a simple environment for testing and monitoring PCV signal and other parameters (volume, flow and dynamic compliance) during artificial ventilation. Furthermore, the simulator may be used for studying in the laboratory and training ventilator’s operators.
Comprehensive Environmental Design (CED) Studio in Two Architecture Schools in Karachi: Evolution, Process, and Impacts
Noman Ahmed
Archnet-IJAR : International Journal of Architectural Research , 2010,
From development authorities to democratic institutions: Studies in planning and management transition in the Karachi Metropolitan Region
Noman Ahmed
Commonwealth Journal of Local Governance , 2010, DOI: 10.5130/cjlg.v0i7.1907
Granulometric Analysis of Rajmahal Inter-Trappen Sedimentary Rocks (Early Cretaceous), Eastern India, Implications for Depositional History  [PDF]
Aparna Sinha, Sarwar Rais
International Journal of Geosciences (IJG) , 2019, DOI: 10.4236/ijg.2019.103015
Abstract: Rajmahal trap along with its Inter-trappean sedimentary rocks is found exposed in the eastern part of India (24°00'E - 25°15'N; 87°20'E - 87°15'E). Ten representative samples of Inter-trappean sandstone selected from the study area have been subjected to granulometric analysis. The result of the grain size analysis indicates that these sandstone specimens are very fine to fine grained with unimodal grain size distribution. They are dominantly fine skewed and generally mesokurtic in nature. The linear discriminant function plots of various grain size parameters suggest that these sandstones appear to have been deposited either in shallow marine or lacustrine environment. On multigroup multivariate discriminant functions V1 - V2 diagram majority of the samples fall in the beach depositional environment, indicating that most of the sediments were reworked by wave processes before deposition. The C-M pattern diagram shows that the sediment deposition took place in beach environment by rolling or suspension of sediments; hence the clastics were deposited in low energy condition.
The Professional Medical Journal , 2006,
Abstract: Objective: To find out the chemical agents responsible for eye injuries,assess magnitude of the problem and resultant visual outcomes in our dependent population. Design: Observationalstudy. Place and Duration of Study: Eye department, CMH, Hyderabad from Jan 2004 to Dec 2005. Patients andMethods: Thirty five patients of all ages who presented with history of chemical injury to eyes during a period of twoyears were included in this study. Patients with co-morbidity of eyes were not included. Cases were studied to find outcausative chemical agents and their nature, sex distribution, cause and place of the incident, duration of exposure (timeelapsed between chemical injury and copious irrigation at the time of presentation) and effect on visual function.Results: Chemical injuries sustained by 47 eyes of 35 patients were analyzed. All of them were accidental and mostlymales were affected at their workplace. Nearly one third of the times 12(34.29%) both eyes were affected and23(65.71%) cases were unilaterally affected. 30(85.72%) patients presented within first two hours of the injury.3(8.57%) presented within 12 hours and 2(5.72%) presented within 24 hours. Severity of injury was grade I in mosteyes i.e. 37(78.73%) and grade II in 10(21.27%). None was found to have grade III or IV injury. Immediate irrigationwas reported in 29(82.86%) cases. The visual prognosis for eyes that received immediate irrigation was significantlyimproved. 27(77.14%) cases were caused by alkalis and 8(22.86%) were due to acids. 26(74.28%) of the cases weredue to lime. A visual acuity of 6/6 was achieved in 40(85.10%) eyes at follow up after 01 week. 7(14.89%) eyesdeveloped corneal haze of varying degree resulting in BCVA of 6/9 to 6/18. Eye protection was not used in any of the35(100%) cases. 1(2.13%) eye developed cataract during follow up period and needed to be operated upon for visualrehabilitation. Conclusion: All ocular chemical injuries resulted from accidents; at work or at home and none resultedfrom assault. Most of the injured persons needed to be hospitalized on an average for 03 days. Lime was found to bethe major culprit and was found to be used extensively for painting purposes. Visual outcome correlated with severityof injury at initial presentation.
Safety of Overnight Hospitalization after Transurethral Resection of Prostate  [PDF]
Sarwar N. Mahmood, Ismaeel Aghaways
Open Journal of Urology (OJU) , 2016, DOI: 10.4236/oju.2016.61001
Abstract: Background: Monopolar transurethral resection of prostate has long been a standard method of managements of benign prostatic hyperplasia. The safe and superior efficacy of transurethral resection of prostate (TURP) always argues strongly for maintaining it as the primary mode of therapy for patients with benign prostatic hyperplasia (BPH). There is a trend toward early catheter removal after transurethral resection of prostate (TURP) even to the extent of performing it as a day case. We explored the safety and feasibility of early catheter removal and discharging the patient without catheter after TURP. Materials and methods: Forty patients who underwent monopolar TURP were included in a prospective study. The decision to remove catheters on the first morning after surgery was based on the color of the catheter effluent, absence of clots, normal vital signs and adequate urine output. Patients who voided successfully were discharged on the same day as catheter removal. Results: Among the forty patients whose catheters were removed on first postoperative day, 38 patients (95%) voided successfully, and were discharged on the same day. However, two out of forty patients (5%) were recatheterized due to urethral discomfort during micturition. The catheter was removed on the next day. Mean overall duration of catheterization was 18.36 hours, and overall length of patient hospitalization was 21.68 hours. Conclusions: Overnight hospitalization and early catheter removal after transurethral prostatectomy are an appropriate, safe and effective way of patient care with minimal morbidity.
Bifurcation Analysis of a Coupled Acetylcholinesterase/Choline Acetyltransferase Enzymes Neurocycle  [PDF]
Hamza M. Habib, G. Ibrahim, Osama Noman Saleh
Advances in Chemical Engineering and Science (ACES) , 2013, DOI: 10.4236/aces.2013.31003

A diffusion-reaction, two-compartment model was used to explore the bifurcation and chaotic behavior of acetylcholinesterase (AChE) and cholineacetyltransferase (ChAT) coupled enzymes system. The effects of hydrogen ion feed concentrations, choline (Ch) and acetylcholine (ACh) feed concentrations, as bifurcation parameters on the system performance are studied. It is found that hydrogen ions play an important role in creating potential differences through the plasma membranes. Detailed bifurcation analysis over a wide range of parameters is carried out in order to uncover some of the qualitative changes of the system such as hysteresis, multiplicity, Hopf bifurcation, boundary crises bifurcation, periodic transient, and other complex dynamics. Some of the obtained results relate to the phenomena occurring in the physiological experiments like periodic stimulation of neural cells and irregular functioning of acetylcholine receptors. The model depends on real kinetics expressions and parameters obtained from the literature, so the results can be used to direct more systematic research on cholinergic disorder.

Flood Forecasting GIS Water-Flow Visualization Enhancement (WaVE): A Case Study  [PDF]
Timothy R. Petty, Nawajish Noman, Deng Ding, John B. Gongwer
Journal of Geographic Information System (JGIS) , 2016, DOI: 10.4236/jgis.2016.86055
Abstract: Riverine flood event situation awareness and emergency management decision support systems require accurate and scalable geoanalytic data at the local level. This paper introduces the Water-flow Visualization Enhancement (WaVE), a new framework and toolset that integrates enhanced geospatial analytics visualization (common operating picture) and decision support modular tools. WaVE enables users to: 1) dynamically generate on-the-fly, highly granular and interactive geovisual real-time and predictive flood maps that can be scaled down to show discharge, inundation, water velocity, and ancillary geomorphology and hydrology data from the national level to regional and local level; 2) integrate data and model analysis results from multiple sources; 3) utilize machine learning correlation indexing to interpolate streamflow proxy estimates for non-functioning streamgages and extrapolate discharge estimates for ungaged streams; and 4) have time-scaled drill-down visualization of real-time and forecasted flood events. Four case studies were conducted to test and validate WaVE under diverse conditions at national, regional and local levels. Results from these case studies highlight some of WaVE’s inherent strengths, limitations, and the need for further development. WaVE has the potential for being utilized on a wider basis at the local level as data become available and models are validated for converting satellite images and data records from remote sensing technologies into accurate streamflow estimates and higher resolution digital elevation models.
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