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Search Results: 1 - 10 of 1260 matches for " Faisal SALEEM "
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Improving Network Efficiency by Selecting and Modifying Congestion Control Constraints  [PDF]
Saleem Ullah, Faisal Shahzad, Shahzada Khurram, Waheed Anwer
Communications and Network (CN) , 2014, DOI: 10.4236/cn.2014.62013
Abstract: Congestion in wired networks not only causes severe information loss but also degrades overall network performance. To cope with the issue of network efficiency, in this paper we have pro- posed and investigated an efficient mechanism for congestion control by the selection of appropri- ate congestion window size and proactive congestion avoidance, which improves system overall performance and efficiency. The main objective of this work is to choose the accurate size of con- gestion window based on available link bandwidth and round trip time (RTT) in cross and grid topologies, instead of choosing number of hops (Previous researches), we have achieved significant improvement in the overall performance of the network. General simulation results under distinctive congestion scenarios are presented to illuminate the distinguished performance of the proposed mechanism.
Accurate Imputation for Relative Humidity over Pakistan Gathered from AQUA Satellite  [PDF]
Usman Saleem, Mian Sohail Akram, Muhammad Fahad Ullah, Faisal Rehman
Open Journal of Geology (OJG) , 2018, DOI: 10.4236/ojg.2018.810059
Abstract: The relative humidity in the atmosphere captured by AQUA satellite contains missing matrices. In order to fill such missing values four very popular imputation techniques: Bilinear, Inverse Distance Weighting, Natural Neighbor and Nearest Interpolations were tested. Mean Absolute Error (MAE), Root Mean Square Error (RMSE), Coefficient of Determination (R2) and Correlation Coefficient (Corr), were used to check the accuracy of these interpolations. It was found that the Inverse Distance Weighting and Nearest Interpolation were proved not to be suited. Natural interpolation gave accurate results than the aforementioned two interpolations. Missing values of relative humidity were accurately refilled with Bilinear Interpolation. This interpolation produced RMSE of ±0.543 for relative humidity over 100, 150, 200, 250, 300, 400, 500 hPa while for 600, 700, 850 and 925 hPa RMSE remainnear to 1. A perfect fit to the surface and very strong correlation (value near to 0.99) was found between actual and imputed relative humidity data through Bilinear Interpolation. Therefore it was concluded that the Bilinear Interpolation is the most accurate and best imputation for missing values of relative humidity form 100 to 1000 hPa levels.
Improving Queuing System Throughput Using Distributed Mean Value Analysis to Control Network Congestion  [PDF]
Faisal Shahzad, Muhammad Faheem Mushtaq, Saleem Ullah, M. Abubakar Siddique, Shahzada Khurram, Najia Saher
Communications and Network (CN) , 2015, DOI: 10.4236/cn.2015.71003
Abstract: In this paper, we have used the distributed mean value analysis (DMVA) technique with the help of random observe property (ROP) and palm probabilities to improve the network queuing system throughput. In such networks, where finding the complete communication path from source to destination, especially when these nodes are not in the same region while sending data between two nodes. So, an algorithm is developed for single and multi-server centers which give more interesting and successful results. The network is designed by a closed queuing network model and we will use mean value analysis to determine the network throughput (b) for its different values. For certain chosen values of parameters involved in this model, we found that the maximum network throughput for β0.7?remains consistent in a single server case, while in multi-server case for β≥ 0.5?throughput surpass the Marko chain queuing system.
AQUA Satellite Data and Imputation of Geopotential Height: A Case Study for Pakistan  [PDF]
Usman Saleem, Mian Sohail Akram, Muhammad Fahad Ullah, Faisal Rehman, Muhammad Riaz Khan
Open Journal of Geology (OJG) , 2018, DOI: 10.4236/ojg.2018.810060
Abstract: In current study an attempt is carried out by filling missing data of geopotiential height over Pakistan and identifying the optimum method for interpolation. In last thirteen years geopotential height values over were missing over Pakistan. These gaps are tried to be filled by interpolation Techniques. The techniques for interpolations included Bilinear interpolations [BI], Nearest Neighbor [NN], Natural [NI] and Inverse distance weighting [IDW]. These imputations were judged on the basis of performance parameters which include Root Mean Square Error [RMSE], Mean Absolute Error [MAE], Correlation Coefficient [Corr] and Coefficient of Determination [R2]. The NN and IDW interpolation Imputations were not precise and accurate. The Natural Neighbors and Bilinear interpolations immaculately fitted to the data set. A good correlation was found for Natural Neighbor interpolation imputations and perfectly fit to the surface of geopotential height. The root mean square error [maximum and minimum] values were ranges from ±5.10 to ±2.28 m respectively. However mean absolute error was near to 1. The validation of imputation revealed that NN interpolation produced more accurate results than BI. It can be concluded that Natural Interpolation was the best suited interpolation technique for filling missing data sets from AQUA satellite for geopotential height.
Arsalan SHOEBY,Faisal SALEEM,Ambreen RAZZAQ,Naveed R. KHAN
Management & Marketing , 2012,
Abstract: The contribution of faculty members in producing scholars and economy building can’t be rule out in any country. The faculty member’s satisfaction, commitment and performance are the points to investigate in higher education sector of Pakistan, especially in private sector universities. This study is conducted in Pakistan to investigate the relationship of satisfaction with commitment and performance, and commitment association with performance. The tools were adopted from the studies of Rice & Schneider (1994) and Smeenk et al. (2008). The top five, private sector universities of Karachi, as per HEC criteria, were taken as target sample to conduct the survey. This research affirmed that satisfaction is positively correlated with commitment and performance, and commitment also correlated with performance of faculty members of private sector universities in Pakistan.
Comparative Study of Quality Parameters of Knitted Fabric from Air-jet and Ring Spun Yarn
Babar Shahbaz,Nisar Ahmad Jamil,Assad Farooq,Faisal Saleem
Journal of Applied Sciences , 2005,
Abstract: From the present research work it is concluded that properties of ring spun yarn are better than air-jet spun yarn. Under different blend ratios, yarn and fabric tensile properties improved gradually as the share of polyester in the blend was increased. However under two different yarn spinning systems (ring and air-jet), fabric strength, of ring spun yarn knitted fabrics is greater as compared to air-jet spun yarn. The results indicated that yarn and fabric strength as well as fabric weight showed highly significant effects of machine and blending ratio.
Prevalence of Obesity in School-Going Children of Karachi
Haider Javed Warraich, Faisal Javed, Mohammed Faraz-ul-Haq, Fariha Batool Khawaja, Sarah Saleem
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0004816
Abstract: Background Obesity is an emerging problem in Pakistan. The authors sought to determine prevalence of obesity and malnutrition in school-going children, from grades 6th to 8th of different schools of Karachi and assess associations that affect the weight of the children. Methodology/Principal Findings A cross sectional study design with children studying in grades 6th to 8th grade, in different schools of Karachi. We visited 10 schools of which 4 consented; two subsidized government schools and two private schools. A questionnaire was developed in consultation with a qualified nutritionist. Height and weight were measured on calibrated scales. A modified BMI criterion for Asian populations was used. Data was collected from 284 students. Of our sample, 52% were found to be underweight whereas 34% of all the children were normal. Of the population, 6% was obese and 8% overweight. Of all obese children, 70% belonged to the higher socio-economic status (SES) group, while of the underweight children, 63.3% were in the lower SES. Amongst obese children in our study, 65% ate meat every day, compared to 33% of normal kids. Conclusion Obesity and undernutrition co-exist in Pakistani school-children. Our study shows that socio-economic factors are important since obesity and overweight increase with SES. Higher SES groups should be targeted for overweight while underweight is a problem of lower SES. Meat intake and lack of physical activity are some of the other factors that have been highlighted in our study.
Medial Rectus Dehiscence following Buckling
Simi Zaka-ur-Rab, Manoj Shukla, Faisal Zubair, Akbar Saleem, Mohd. Shahim Sami
JK Science : Journal of Medical Education & Research , 2008,
Abstract: Migration of silicone explants through rectus muscle insertion is a rare complication with very few casesreported. Anterior migration of a solid silicone band may occur if it is tight, placed anterior to the equatoror not properly anchored to the sclera. The band slowly erodes through the tendon of one or more rectimuscles allowing them to reattach spontaneously with scar tissue behind migrating element. The authorsdescribe a rare case of anterior migration of the buckle following encirclage by a 4mm silicone bandresulting in spontaneous disinsertion of medial rectus muscle where muscle disinsertion had not beenperformed peroperatively. This migration occurred in the absence of any predisposing factors. The muscledisinsertion was so gradual that the muscle got reinserted almost to its original insertion as a result ofwhich there was no heterotropia .
Adoption of Bt Cotton: Threats and Challenges Adopción de Algodón Bt: Desafíos y Amenazas
Muhammad Faisal Bilal,Muhammad Farrukh Saleem,Muhammad Ashfaq Wahid,Amir Shakeel
Chilean Journal of Agricultural Research , 2012,
Abstract: Adopting new technology always involves advantages and risks; Bt cotton (Gossypium hirsutum L.) is a new technology well known in developed countries for its many advantages, such as reduced pesticide application, better insect pest control, and higher lint yield. However, its success in developing countries is still a question mark. Global adoption of Bt cotton has risen dramatically from 0.76 million ha when introduced in 1996 to 7.85 million ha in the 2005 cotton-growing season where 54% of the cotton crops in the USA, 76% in China, and 80% in Australia were grown with single or multiple Bt genes. Bollworms are serious cotton pests causing 30-40% yield reduction in Pakistan and 20-66% potential crop losses in India. The major advances shown in this review include: (1) Evolution of Bt cotton may prove to be a green revolution to enhance cotton yield; (2) adoption of Bt cotton by farmers is increasing due to its beneficial environmental effects by reducing pesticide application: however, a high seed price has compelled farmers to use illegal non-approved Bt causing huge damage to crops because of low tolerance to insect pests; and (3) some factors responsible for changes in the efficiency of the Bt gene and Bt cotton yield include internal phenology (genetics), atmospheric changes (CO2 concentration), nutrition, insect pests, boll distribution pattern, disease and nematodes, removal of fruiting branch and/or floral bud, introduction of Bt gene, and terpenoids and tannin production in the plant body. La adopción de nueva tecnología siempre involucra ventajas y riesgos; algodón Bt (Gossypium hirsutum L.) es una nueva tecnología bien conocida en países desarrollados por muchas ventajas como reducida aplicación de pesticidas, mejor control de insectos plaga, y mayor producción de fibra, pero su éxito en países en desarrollo aún conlleva dudas. La adopción global de algodón Bt ha aumentado dramáticamente de 0,76 millones de hectáreas en su introducción en 1996 a 7,85 millones de hectáreas en la estación de cultivo de algodón 2005, 54% de cultivos de algodón en EE.UU., 76% en China, y 80% en Australia se cultivaron con genes Bt únicos o múltiples. Los gusanos del algodonero son plagas graves del algodón que causan 30-40% de reducción en rendimiento en Paquistán, y 20-60% pérdidas potenciales en India. Las principales ventajas mostradas en esta revisión incluyen: (1) Evolución de algodón Bt puede probar revolución verde en el aumento de rendimiento de algodón; (2) adopción de algodón Bt por agricultores está aumentando debido a sus efectos beneficiosos en el
Requirements Analysis: Evaluating KAOS Models  [PDF]
Faisal Almisned, Jeroen Keppens
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.39101
Abstract: Wigmore’s charts and Bayesian networks are used to represent graphically the construction of arguments and to evaluate them. KAOS is a goal oriented requirements analysis method that enables the analysts to capture requirements through the realization of the business goals. However, KAOS does not have inbuilt mechanism for evaluating these goals and the inferring process. This paper proposes a method for evaluating KAOS models through the extension of Wigmore’s model with features of Bayesian networks.
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