School of Systems and Technology (SST)

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https://escholar.umt.edu.pk/handle/123456789/154

One of the best in Pakistan, consisting Moreover about two dozen faculty members have doctoral degrees.

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Ad Hoc Collaboration space for distributed cross device mobile application development using WiFi direct (ACS)
(University of Management & Technology, 2018) Khawaja, Imran Abbas
Over the last few years, we have seen an enormous increase in the usage of electronic devices smart phones, tablets, laptops, TVs and wearables, which are developed by different manufacturer for different platforms. People surrounded by these devices need to interact with them during the meeting, presentation, class room and lots of other collaborative activities to share and receive information across the devices. However, the interaction among these devices is still device centric and dependent on the expensive fixed software and hardware infrastructure. In a situation, where fixed infrastructure service does not exist, suspended or disrupted due to some reasons, the interaction across these devices is not possible. In this study we have presented the framework that provides th network as well as facilitate the development of cross de without using any fixed expensive infrastructure. The n reduced the application development time by hiding the c to use API's for application developer to build distributed development takes extra time and distract the developer to to high complexity level. This framework supports dive of different manufacturer and all interactions are done the nearby devices to communicate with each other with point.
Adomian decomposition method with Neumann boundary conditions for solution of nonlinear boundary value problem
(Science International, 2015) Sana. A.; N. A. Chaudhry; M.Saeed; M.F.Tabassum
The Adomian decomposition method (ADM) is a creative and effective method for exact solution of functional equations of various kinds. Adomian decomposition method solves wide class of linear and non-linear, ordinary or partial differential equations. This paper presents the Adomian decomposition method for the solution of nonlinear boundary value problem using Neumann boundary conditions. In this approach, the solution is found in the form of a convergent power series with easily computed components. To show the efficiency of the method, numerical results and graphical representation of results are presented and compared with exact solution.
Algebraic properties of the binomial edge ideal of a complete bipartite graph
(Univ. Ovidius Constant a, 2014) Sohail Zafar; Schenzel, Peter
Let JG denote the binomial edge ideal of a connected undirected graph on n vertices. This is the ideal generated by the binomials xiyj 􀀀 xjyi; 1 i < j n; in the polynomial ring S = K[x1; : : : ; xn; y1; : : : ; yn] where fi; jg is an edge of G. We study the arithmetic properties of S=JG for G, the complete bipartite graph. In particular we compute dimen- sions, depths, Castelnuovo-Mumford regularities, Hilbert functions and multiplicities of them. As main results we give an explicit description of the modules of de ciencies, the duals of local cohomology modules, and prove the purity of the minimal free resolution of S=JG.
Algebraic properties of the binomial edge ideal of a complete bipartite graph
(An. St. Univ. Ovidius Constanta, 2014) Schenzel, Peter; Sohail Zafar
Let JG denote the binomial edge ideal of a connected undirected graph on n vertices. This is the ideal generated by the binomials xiyj 􀀀 xjyi; 1 _ i < j _ n; in the polynomial ring S = K[x1; : : : ; xn; y1; : : : ; yn] where fi; jg is an edge of G. We study the arithmetic properties of S=JG for G, the complete bipartite graph. In particular we compute dimensions, depths, Castelnuovo-Mumford regularities, Hilbert functions and multiplicities of them. As main results we give an explicit description of the modules of decencies, the duals of local co homology modules, and prove the purity of the minimal free resolution of S=JG.
Analysis of gyra mutations in local TB patients of Lahore Pakistan
(2017) Iram Afzal
Tuberculosis is a slowly progressive, debilitating disease that kills about 1.5 million people world-wide. Pakistan ranked 4th in global TB burden. In this research work, male-female ratio showed that the rate of TB is 32 times higher in women as compared to men. The patients suffering from pulmonary TB were 94% and only 6% were recorded as extra pulmonary TB. All the extra pulmonary TB cases were found in females. There were about 72% cases which were positive for MDR-TB. Out of these72% MDR-TB cases,all were previously treated. The differentiation between M. bovis and M. tuberculosis reflects that none of the sample belonged to M. bovis. All the isolates were belonged to M. tuberculosis, but 6% samples had extra-pulmonary TB. It shows that M. tuberculosis not only affects the lungs, but also the other parts of the human body. GyrA mutations were investigated by using newly designed primers, at codons 90, 91, and 94. Results showed that out of all samples there were mutations in 60% samples. There were mutations in 30% samples at codon 90, 6% samples were mutated at codon 91 and 24% were mutated at codon 94.
Analysis of stability and accuracy for forward time centered space approximation by using modified equation
(Science International, 2015) Tahir Ch; N.A. Shahid; M.F. Tabassum; A. Sana; S.Nazir
In this paper we investigate the quantitative behavior of a wide range of numerical methods for solving linear partial differential equations [PDE’s]. In order to study the properties of the numerical solutions, such as accuracy, consistency, and stability, we use the method of modified equation, which is an effective approach.To determine the necessary and sufficient conditions for computing the stability, we use a truncated version of modified equation which helps us in a better way to look into the nature of dispersive as well as dissipative errors. The heat equation with Drichlet Boundary Conditions can serve as a model for heat conduction, soil consolidation, ground water flow etc.Accuracy and Stability of Forward Time Centered Space (FTCS) scheme is checked by using Modified Differential Equation [MDE].
Analysis of transversely electrical excited atmospheric (tea) nitrogen laser and different parameters of homemade ignition system
(Science International, 2015) Mukhtar Hussain; Muhammad Bilal Siddique; Tayyab Imran
We report a theoretical and experimental investigation of transversely electrical excited at atmospheric pressure (TEA) nitrogen laser and homemade ignition system. The voltage oscillation in the spark gap, laser cavity and in the Blumlein circuit has been described briefly. The laser pulses at central wavelength of 337.14 nm with pulse duration of 1.5 ns at atmospheric pressure are obtained from the constructed prototype laser. The optimization of the spark gap, variation of the inductance and resistance of the spark gap, geometry of the discharge channel of laser, observance of beam spot and electric field to pressure in the discharge channel of laser are measured and calculated. The investigation about the discharge channel voltage, current and their dependence upon the time dependent inductance, time dependent resistance of spark gap for different resistive phase period has been investigated for the optimization of the constructed TEA nitrogen laser system.
Analytic solutions of oldyrod-b fluid with fractional derivatives in a circular duct that applies a constant couple
(Alexendria Engineering Journal, Elsevier, 2016) Muhammad Bilal Riaz; Muhammad Imran Asjad
The aim of this article was to analyze the rotational flow of an Oldroyd-B fluid with fractional derivatives, induced by an infinite circular cylinder that applies a constant couple to the fluid. Such kind of problem in the settings of fractional derivatives has not been found in the literature. The solutions are based on an important remark regarding the governing equation for the nontrivial shear stress. The solutions that have been obtained satisfy all imposed initial and boundary conditions and can easily be reduced to the similar solutions corresponding to ordinary Oldroyd-B, fractional/ordinary Maxwell, fractional/ordinary second-grade, and Newtonian fluids performing the same motion. The obtained results are expressed in terms of Newtonian and non-Newtonian contributions. Finally, the influence of fractional parameters on the velocity, shear stress and a comparison between generalized and ordinary fluids is graphically underlined.
Analytical solutions for unsteady flow problems of Maxwell fluid in a porous mediam
(Science International, 2015) Siddique; Abdullah Y. Al Hossain; M. B. Riaz
In this paper, the problems of unsteady unidirectional flow of Maxwell fluid in a porous media are examined. The governing equations of flow are modelled, by employing the modified Darcy's law of a Maxwell fluid. Using Sumudu transform, analytical solutions of modelled equations are established for the following problems: (i) unsteady Couette flow, (ii) unsteady Poiseuille flow and (iii) unsteady generalized Couette flow. Since the Sumudu transform has units preserving properties, therefore aforementioned problems are solved without restoring the frequency domain. This is one of many strength points for this new transform, especially with respect to applications in problems with physical dimensions. Further, the solutions for the velocity fields that have been obtained; have complete agreement with those established by using the Laplace transform. Moreover, the corresponding solutions for Newtonian fluids as well as those for Maxwell fluids can be obtained as limiting cases of our solutions. Finally, the impact of relevant parameters on the velocity of fluids is also analyzed by graphical illustrations.
Approximations for soft fuzzy rough sets.
(Scientific publications of the state University of NOVI Pazar, Scientific, 2016) Tabasam Rashid
In this paper, we introduce a modified soft fuzzy rough set model. The lower and upper approximation operators are presented and their related properties are investigated. It is shown that these new models of approximations are finer than already known in the literature.
Are efforts up to the mark? A cirrhotic state and knowledge about HCV prevalence in general population of Pakistan
(Elsevier, 2016) Muhammad Sohail Afzal
Artificial showering algorithm: a new meta-heuristic for unconstrained optimization
(Science International, 2015) Javaid Ali; Muhammad Saeed; Muhammad Luqman; Muhammad Farhan Tabassum
A novel meta-heuristic known as Artificial Showering Algorithm (ASHA) is presented in this paper. The proposed method is based on flow and accumulation phenomena of water units distributed by human controlled equipment in an ideal field representing the search space. The developed method is applied to benchmarking test functions and quality solutions are obtained. Comparisons witness that the method even at its evolvement phase performs better than pioneering algorithms like Genetic Algorithm, Differential Evolution and Simulated Annealing method.
Assessment of relief to oxidative stress by different fractions of mazus
(2013) Sammia Shahid
The purpose of this study was to evaluate the antioxidant potential of Mazus pumilus (Burm. f.) Steenis. Methanolic extract of the whole powdered plant was obtained on soxhlet apparatus, dissolved in distilled water and partitioned with n-hexane, chloroform, ethyl acetate and n-butanol sequentially. The antioxidant potential of all these fractions and remaining aqueous fraction was evaluated by four methods: 1,1-Diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, total antioxidant activity, Ferric reducing antioxidant power (FRAP) assay and ferric thiocyanate assay along with determination of their total phenolics. The results revealed that n-butanol fraction exhibited highest percent inhibition of DPPH radical as compared to other fractions. It showed 80.42±1.68% inhibition of DPPH radical at a concentration of 60 μg/ml. The IC50 value of this fraction was 28.79±1.35 μg/ml, relative to ascorbic acid, having IC50 58.84± 0.89 μg/mL. It also showed highest total antioxidant activity (1.01±0.08) as well as highest FRAP value (626.83±0.39 TE μM/mL), highest total phenolic contents (88.30±1.09 GAE mg/g) and highest value of inhibition of lipid peroxidation (53.91±1.21%) as compared to the other studied fractions. Ethyl acetate soluble fraction also showed good results.
Characterization of biodiesel samples produced from fresh and waste vegetable oils to evaluate their feasibility for power generation
(2013) Mehwish Inam; Ayesha Mohy-Ud-Din; Abdul Aziz Bhatti; Mashood Nasir
The purpose of this paper is to design a system in which the biodiesel prepared from fresh and waste vegetable oil can be converted into useful power output. It is intended that this biodiesel produced may ultimately be a fuel source for the power generation from the generators. The optimal conditions of temperatures and concentration have also been discussed and the criteria to select these parameters have been evaluated.
Charged cylindrical polytropes with generalized polytropic equation of state.
(The European Physical Journal C,Springer, 2016) Syed Ali Mardan Azmi; Ifra Noureen; Muhammad Aziz Ur Rehman
We study the general formalism of polytropes in the relativistic regime with generalized polytropic equations of state in the vicinity of cylindrical symmetry. We take a charged anisotropic fluid distribution of matter with a conformally flat condition for the development of a general framework of the polytropes. We discuss the stability of the model by the Whittaker formula and conclude that one of the models developed is physically viable.
Chemical constituents, proximate composition and hepatoprotective activity of abutilon muticum
(Asian Journal of Chemistry, 2012) Sammia Shahid; Muhammad Akram Kashmiri; A Adnan; B Ali
Phytochemical studies of the aerial parts of Abutilon muticum resulted in the isolation of eight new source compounds, which had not been isolated so far from this investigated source. The compounds isolated were: 3,4',5,6,7-pentahydroxy flavones; 3,3',4',5,7-penta hydroxy flavone-8-O-b-D-glucopyranoside, 3,3',4',5,7-pentahydroxy flavones; stigmasterol, benzoic acid, 1-tricosanol, cholesterol and triacontyl palmitate. Proximate composition of A. muticum revealed that the protein content was appreciable (23.5 %) and similar to that of cotton (28.72 %). As far as human nutritional aspects are concerned A. muticum had significant mineral contents. Potassium is most abundant (443.01 mg/100 g), followed by calcium (395.23 mg/100 g), phosphorus (327.13 mg/100 g) and magnesium (193.42 mg/100 g). In addition hepatoprotective activity of A. muticum was evaluated against hepatic damage in rabbits. The substantially elevated enzyme levels were restored towards normalization significantly by the extracts. The biochemical observations were supplemented with histopathological examination of rabbit liver sections. These findings reveal A. muticum, indigenous to Pakistan to be potentially valuable herb for minerals, delivery of drugs and liver diseases.
Combined scheduling of electric vehicles and renewable energy under uncertainty
(University of Management and Technology, 2017) Bilal Ahmed
The increasing energy demand due to industrial and consumer load as well as population has made it imperative to seek out various other resources to harness power. Conventional methods of electric power generation have failed to keep up with the demand in the energy; it is a rather depleting source of power production. These hydrocarbon fuels also pose a serious threat to the environment as the global warming has increased significantly due to their use. The need of the hour is to develop such a system which would be able to cater the needs of the increased energy demand as well as be less of a threat to the environment. Much research has been done on the renewable energy resources and it has produced significant results. With the advancement in research and development, more efficient and better means of electric power production have been devised. The instances include the ever-improving PV panels, Wind energy units and Energy produced from biomass etc. The concept of micro-grid is exactly the crux of the above discussion where conventional power producing resources work in parallel with the renewable energy resources in order to provide smooth and uninterrupted power supply. Clever algorithms and methods have been devised so that all resources work in synchronism with each other in an optimal way.The aim is to amalgamate the resources in such a way that we are able to get the maximum output power at a minimum cost. Various cost effective optimization schemes have been employed in order to yield a balanced system with a low operating cost and a very good efficiency. Incorporation of the optimization methods into the system not only renders it cost effective and efficient, it can also produce profit to consumer when the designed system supplies power to the grid. The demand of electrical vehicles has risen significantly in the recent years. These vehicles offer zero emissions resulting in no harm to the environment. Vehicle to grid (V2G) is technique that has evolved over the years in the developed countries where a fleet of electrical vehicles can provide surplus power back into the grid hence profiting the consumer. Later in this dissertation, this V2G strategy has been extensively addressed. The aim of this dissertation is to provide a combined Electric vehicle and renewable energy resources schedule using the technique of stochastic programming.
Common fixed point theorem for a hybrid pair of mappings in hausdorff fuzzy metric spaces
(University of Management and Technology, 2012) M Abbas; Basit Ali; A Amini-Harandi
In this paper, we prove a coupled fixed point theorem for a multivalued fuzzy contraction mapping in complete Hausdorff fuzzy metric spaces. As an application of the first theorem, a coupled coincidence and coupled common fixed point theorem has been proved for a hybrid pair of multivalued and single-valued mappings. It is worth mentioning that to find coupled coincidence points, we do not employ the condition of continuity of any mapping involved therein. Also, coupled coincidence points are obtained without exploiting any type of commutativity condition. Our results extend, improve, and unify some well-known results in the literature.
Comparative analysis on the efficiency and engine properties by using biodiesel and fossil diesel
(2013) Ayesha Mohy-Ud-Din; Mehwish Inam; Abdul Aziz Bhatti; Mashood Nasir
The increase in the demand and prices of petroleum products as well as the environmental concerns resulting from the burning of fossil fuels in electricity production has resulted in focusing on the use of environmental friendly renewable alternative energy resources, like solar, hydro, tidal, wind, geothermal and biomass energy. There has been plenty of research done so far on engine performance and biodiesel production. Biodiesel was produced from fresh oil (BFO) and waste vegetable oil (BWO) on using biofuels for electricity generation. The engine performance tests were conducted with petroleum diesel and biodiesel samples at different loads and variable speeds. On comparing the electrical efficiency of generator and brake specific fuel consumption(BSFC) values, it was observed that less fuel is required for same power output when BFO (0.19kg/kWh) and BWO (0.18kg/kWh) were used in place of petroleum diesel. Moreover, an increase in BSFC values of BFO and BWO as compare to petroleum diesel at different speeds leads to the same interpretation. Higher efficiency and lower BSFC values of BFO (Efficiency: 43.25%; BSFC: 0.19 kg/kWhr) and BWO (Efficiency:41.34%;BSFC:0.2kg/kWh) due to complete combustion and reduction in calorific value of the fuel. In case of BWO, the operational efficiency (41.34%) was found less than the diesel-fueled condition.
Constructive alignment:
(University of Management and Technology, 2017) Anum Arshad
The purpose of the present study was to inspect the impact of information and communication technologies (ICTs), while attempting to learn from real-time university classroom lectures. The numerous adoptions of mobile phones are one aspect of ICT pleasant appearance. Mobile usage is banned in most classrooms globally. However, students still use them during their lectures and tutorials. It is anticipated that this usage is askew from the motivation of the lectures and classrooms. Synchronizing students’ mobile usage in classrooms with the incentives of their academic activities remains a significant avenue of research. A sample of undergraduate and graduate Computer Science (CS) students and another sample of undergraduate and graduate English literature students were surveyed to establish their frequency of mobile ICT use in the classrooms and the students' motivations and basis for undertaking those activities unrelated to classrooms culture, in UMT Lahore , Pakistan . In spite of mobile usage being banned in class rooms, it was determined that a large number of students use mobile phones during lectures and tutorials. This study helped to revamp classroom activities, to actively involve digital technologies to lend a hand in valuable coalition with the learning outcomes and widen the student learning awareness.

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