With the improvements of technologies, software systems have been more complex then ever before. This requires new approaches to improve software development processes so that they sufficiently and efficiently meet these challenges.... more
With the improvements of technologies, software systems have been more complex then ever before. This requires new approaches to improve software development processes so that they sufficiently and efficiently meet these challenges. Requirement engineering in this regard facing many problems in which conflicts resolution gained very little popularity. In this paper we present motivation toward requirement conflicts resolution and discuss how resolution techniques from other domains can be applied in this area. We also proposed a new approach for conflicts resolution based on the idea of genetic algorithm. This model is applied to a case study to demonstrate how systematically resolution process can be optimized. Key words: Genetic algorithm, conflict resolution, requirement engineering.
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The astounding physiognomies of carbon nanotubes such as lightweight, mechanical stability, excellent thermal and electrical conductivities, and physicochemical compatibility make them perfect material for electrochemical gadgets. Having... more
The astounding physiognomies of carbon nanotubes such as lightweight, mechanical stability, excellent thermal and electrical conductivities, and physicochemical compatibility make them perfect material for electrochemical gadgets. Having such amazing characteristics in mind our intention is to provide a numerical solution of Casson nanofluid flow containing melting heat transfer past a swirling cylinder. Analysis of multi-wall carbon nanotubes (MWCNTs) with water as a base fluid is performed. Effects of entropy generation, magnetohydrodynamics, and heat generation/absorption are also contemplated. The proposed physical model is erected and through feasible transformations, the obtained coupled nonlinear system of ODEs is solved via bvp4c function of MATLAB software numerically. The impacts of Casson nanofluid comprises of MWCNTs on skin friction, entropy generation coefficient and heat transfer rate are analyzed. Graphs of physical parameters of interest, Casson parameter (0≤β≤2), m...
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This study deals with the steady laminar slip flow of an incompressible Newtonian fluid in a non-uniform permeable channel under the influence of transverse magnetic field. The reabsorption through the wall is accounted for by considering... more
This study deals with the steady laminar slip flow of an incompressible Newtonian fluid in a non-uniform permeable channel under the influence of transverse magnetic field. The reabsorption through the wall is accounted for by considering flux as a function of downstream distance. The non-linear coupled partial differential equations of motion are first transformed into a single fourth order partial differential equation and then solved analytically using Adomain decomposition method. Effects of pertinent parameters on different flow properties are discussed by plotting graphs. Results reveal that magnetic field considerably influences the behavior of flow.
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The impact of nonlinear thermal radiation in the flow of micropolar nanofluid past a nonlinear vertically stretching surface is investigated. The electrically conducting fluid is under the influence of magnetohydrodynamics, heat... more
The impact of nonlinear thermal radiation in the flow of micropolar nanofluid past a nonlinear vertically stretching surface is investigated. The electrically conducting fluid is under the influence of magnetohydrodynamics, heat generation/absorption and mixed convection in the presence of convective boundary condition. The system of differential equations is solved numerically using the bvp4c function of MATLAB. To authenticate our results, two comparisons with already studied problems are also conducted and an excellent concurrence is found; hence reliable results are being presented. Complete deliberation for magnetite nanofluid with Ferric Oxide (FeO) nanoparticles in the water-based micropolar nanofluid is also given to depict some stimulating phenomena. The effect of assorted parameters on velocity, homogeneous-heterogeneous reactions, temperature and micropolar velocity profiles are discussed and examined graphically. Moreover, graphical illustrations for the Nusselt number a...
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We report on HfO2/Al/HfO2 multilayer thin films for heat mirror applications prepared on corning glass substrates by electron beam evaporation. Films fabricated at a substrate temperature of 100 °C show nano-polycrystals of HfO2 embedded... more
We report on HfO2/Al/HfO2 multilayer thin films for heat mirror applications prepared on corning glass substrates by electron beam evaporation. Films fabricated at a substrate temperature of 100 °C show nano-polycrystals of HfO2 embedded in a disordered lattice according to X-ray diffraction results. Atomic force microscopy revealed that HfO2/Al/HfO2 layers possess smooth surface that is appropriate for optical heat mirror applications. Study of optical properties by UV-Visible spectrophotometer demonstrated that transmittance of HfO2/Al/HfO2 device was decreasing from UV to VIS and then slightly increasing in the NIR regions, with an opposite trend followed by reflectance. Optical constants i.e. refractive index, extinction coefficient, band gap energy, Urbach energy has also been calculated. The optical band gap and Urbach energy are found to be 4.34 eV and 3.164 eV, respectively. The collective oscillation energy loss for heat mirrors applications are also observed.
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The utilisation of information technology (IT) has become an indicator of a country's wealth level. Countries, which fail to prepare for information technology and do not use it properly, are likely to lose their global... more
The utilisation of information technology (IT) has become an indicator of a country's wealth level. Countries, which fail to prepare for information technology and do not use it properly, are likely to lose their global competitiveness. Muslim countries have paid little attention to leverage the benefits offered by the IT use in their library and information centres. The first part of this paper reports the status of information technology applications in libraries and information centres of Muslim countries. The second part of the paper reports the level of hardware, software, and IT‐based resources available in libraries and information centres in Pakistan. The third part of this paper discusses the problems hindering the wider use of information technology in libraries and information centres in Pakistan. Based on the findings of the survey and documentary research the final part of this paper puts forward overall suggestions to solve the problems hindering the wider use of i...
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Being the lightest and the most abundant element in the universe, hydrogen is fascinating to physicists. In particular, the conditions of its metallization associated with a possible superconducting state at high temperature have been a... more
Being the lightest and the most abundant element in the universe, hydrogen is fascinating to physicists. In particular, the conditions of its metallization associated with a possible superconducting state at high temperature have been a matter of much debate in the scientific community, and progress in this field is strongly correlated with the advancements in theoretical methods and experimental techniques. Recently, the existence of hydrogen in a metallic state was reported experimentally at room temperature under a pressure of 260–270 GPa, but was shortly after that disputed in the light of more experiments, finding either a semimetal or a transition to an other phase. With the aim to reconcile the different interpretations proposed, we propose by combining several computational techniques, such as density functional theory and the GW approximation, that phase III at ambient temperature of hydrogen is the Cmca -12 phase, which becomes a semimetal at 260 GPa . From phonon calculat...
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In a Hawaii Hereditary Anemia Screening Project, 4,984 participants were tested for glucose-6-phosphate dehydrogenase (G6PD) deficiency by a filter paper blood spot fluorescence test. Abnormal samples and suspected heterozygotes were... more
In a Hawaii Hereditary Anemia Screening Project, 4,984 participants were tested for glucose-6-phosphate dehydrogenase (G6PD) deficiency by a filter paper blood spot fluorescence test. Abnormal samples and suspected heterozygotes were checked by quantitative G6PD assay (normal 4.5 to 14 units/g Hb). G6PD was deficient (< 1.5 units/g Hb) in 188 of 2,155 males; 7 other males had low activity (1.5
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The effect of entanglement and correlated noise in a four-player quantum Minority game (QMG) is investigated. Different time correlated quantum memory channels are considered to analyze the Nash equilibrium (NE) payoff of the first... more
The effect of entanglement and correlated noise in a four-player quantum Minority game (QMG) is investigated. Different time correlated quantum memory channels are considered to analyze the Nash equilibrium (NE) payoff of the first player. It is seen that the NE payoff is substantially enhanced due to the presence of correlated noise. The behavior of damping channels (amplitude damping (AD) and phase damping) is approximately similar. However, bit-phase flip channel heavily influences the Minority game as compared to other channels in the presence of correlated noise. On the other hand, phase flip channel has a symmetrical behavior around 50% noise threshold. The significant reduction in payoffs due to decoherence is well compensated due to the presence of correlated noise. However, the NE of the game does not change in the presence of noise. It is seen that in case of generalized AD channel, entanglement plays a significant role at lower level of decoherence. The channel has less d...
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Research Interests: Surgery, Vascular Surgery, Medicine, Humans, Female, and 15 moreMale, Randomized Trial, Clinical Sciences, European, Aged, Middle Aged, Intermittent Claudication, Adult, Randomized Controlled Trial, Carotid Endarterectomy, Femoral Artery, Arterial Occlusive Diseases, Surgical Repair, Medical and Health Sciences, and Cardiovascular medicine and haematology
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ABSTRACT
Research Interests: Genetics, Biology, Adolescent, Gene Mapping, Female, and 15 moreClinical, Clinical Genetics, Genetic Map, Hearing Loss, Genetic linkage analysis, Deafness, Clinical Sciences, Annals of Human Genetics, Genotype, Adult, Hearing Impaired, Consanguinity, Genetic Recombination, Autosomal Recessive, and Genetic Markers
Electrical and Magnetic Properties and X-Ray Structure of a Highly Conductive 4: 1 Complex of Tetracyanoquinodimethane and a Tetrathiafulvalene Derivative-Bryce-2003-Angewandte Chemie International Edition in English-Wiley Online Library
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Abstract—Software reusability is significant technique for improving quality, well-timed and cost-effective software development. Optimal usage of reusability ensures benefits in terms of human efforts, budget and time for good quality... more
Abstract—Software reusability is significant technique for improving quality, well-timed and cost-effective software development. Optimal usage of reusability ensures benefits in terms of human efforts, budget and time for good quality software development. Reusability of source code in terms of components also gives advantages to moderate the risk related with software development and its success. Because of unavoidable return, reusability has developed as the most established practice for the software development. However ...
The most general form of non-static plane symmetric space-times is considered to study proper curvature collineations by using the rank of the 6 × 6 Riemann matrix and direct integration techniques. Studying proper curvature collineations... more
The most general form of non-static plane symmetric space-times is considered to study proper curvature collineations by using the rank of the 6 × 6 Riemann matrix and direct integration techniques. Studying proper curvature collineations in each non static case of the above ...
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Research Interests: Endocrinology, Biology, Medicine, Corticotropin Releasing Hormone, Neural stem cell, and 15 moreHippocampus, Cell Differentiation, Internal Medicine, Alcohol, Female, Animals, Alcohol Drinking, Ethanol, Calcium Signaling, Fetal Alcohol Spectrum Disorders, Early development, Acetaldehyde, Cell Proliferation, Hippocampal formation, and Cell count
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M. Haider Raza, SM Hasan Zaidi, M. Ramzan, K. Zaidi, M. Yasin A. Raja1 School ofElectrical Engineering and Computer Science, Rawalpindi, Pakistan University ofNorth Carolina, Charlotte, North Carolina, USAI { haider.raza, drzaidi,... more
M. Haider Raza, SM Hasan Zaidi, M. Ramzan, K. Zaidi, M. Yasin A. Raja1 School ofElectrical Engineering and Computer Science, Rawalpindi, Pakistan University ofNorth Carolina, Charlotte, North Carolina, USAI { haider.raza, drzaidi, mramzan, kamran.zaidi } ...
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Research Interests: Physics, Radio over fiber, Emerging Technologies, High Frequency, Radio Frequency, and 11 moreSEMICONDUCTOR OPTICAL AMPLIFIER, Cost effectiveness, Microwave Photonics, Mach-zehnder Interferometer, Broadband Access, Optical Amplifier, Optical Wireless, Performance Measure, ICET, Data Stream, and Mixing Process
We studied the problem of diffraction of an electromagnetic plane wave by a perfectly conducting finite strip in a homogeneous bi-isotropic medium and obtained some improved results which were presented both mathematically and... more
We studied the problem of diffraction of an electromagnetic plane wave by a perfectly conducting finite strip in a homogeneous bi-isotropic medium and obtained some improved results which were presented both mathematically and graphically. The problem was solved by using the Wiener-Hopf technique and Fourier transform. The scattered field in the far zone was determined by the method of steepest decent. The significance of present analysis was that it recovered the results when a strip was widened into a half plane.
Research Interests: Applied Mathematics, Physics, Optics, Medicine, Anisotropy, and 13 moreComputer Simulation, Light, Electromagnetic Fields, Diffraction, Optical physics, Theoretical Models, Fourier transform, Electrical And Electronic Engineering, Refractometry, Wave Motion, Isotropy, Homogeneous, and Plane Geometry
ABSTRACT
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In this paper we have studied the problem of diffraction of cylindrical acoustic waves (emanating from a harmonic time dependent source) by an oscillating half plane. An analytical solution, using spatial and temporal Fourier transforms,... more
In this paper we have studied the problem of diffraction of cylindrical acoustic waves (emanating from a harmonic time dependent source) by an oscillating half plane. An analytical solution, using spatial and temporal Fourier transforms, complex Fourier series, the Wiener-Hopf technique and the method of steepest descent, is constructed. Some graphs showing the effects of various parameters on the diffracted