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Flower Pollination Heuristics for Parameter Estimation of Electromagnetic Plane Waves

Computers, Materials & Continua 2021年第8期68卷 2529-2543页

作者： Sadiq Akbar Muhammad Asif Zahoor Raja naveed ishtiaq chaudhary Fawad Zaman Hani Alquhayz Department of Electronics University of PeshawarPeshawar25120Pakistan Future Technology Research Center National Yunlin University of Science and TechnologyDouliou64002Taiwan Department of Electrical Engineering International Islamic UniversityIslamabad44000Pakistan Department of Electrical Engineering COMSATS University IslamabadIslamabad44000Pakistan Department of Computer Science and Information College of Science in ZulfiMajmaah UniversityAl-Majmaah11952Saudi Arabia

For the last few decades,the parameter estimation of electromagnetic plane waves i.e.,far field sources,impinging on antenna array geometries has attracted a lot of researchers due to their use in radar,sonar and under water acoustic *** this work,nature inspired heuristics based on the flower pollination algorithm(FPA)is designed for the estimation problem of amplitude and direction of arrival of far field sources impinging on uniform linear array(ULA).Using the approximation in mean squared error sense,a fitness function of the problem is developed and the strength of the FPA is utilized for optimization of the cost function representing scenarios for various number of sources non-coherent located in the far *** worth of the proposed FPA based nature inspired computing heuristic is established through assessment studies on fitness,histograms,cumulative distribution function and box plots *** other worthy perks of the proposed scheme include simplicity of concept,ease in the implementation,extendibility and wide range of applicability to solve complex optimization *** salient features make the proposed approach as an attractive alternative to be exploited for solving different parameter estimation problems arising in nonlinear systems,power signal modelling,image processing and fault diagnosis.

关键词： Direction of arrival flower pollination algorithm plane waves parameter estimation

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Flower Pollination Heuristics for Nonlinear Active Noise Control Systems

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Computers, Materials & Continua 2021年第4期67卷 815-834页

作者： Wasim Ullah Khan Yigang He Muhammad Asif Zahoor Raja naveed ishtiaq chaudhary Zeshan Aslam Khan Syed Muslim Shah School of Electrical Engineering and Automation Wuhan UniversityWuhan430072China Future Technology Research Center National Yunlin University of Science and TechnologyYunlin64002Taiwan Department of Electrical Engineering International Islamic UniversityIslamabadPakistan Department of Electrical Engineering Capital University of Science and TechnologyIslamabadPakistan

In this paper,a novel design of the flower pollination algorithm is presented for model identification problems in nonlinear active noise control *** recently introduced flower pollination based heuristics is implemented to minimize the mean squared error based merit/cost function representing the scenarios of active noise control system with linear/nonlinear and primary/secondary paths based on the sinusoidal signal,random and complex random signals as noise *** flower pollination heuristics based active noise controllers are formulated through exploitation of nonlinear filtering with Volterra *** comparative study on statistical observations in terms of accuracy,convergence and complexity measures demonstrates that the proposed meta-heuristic of flower pollination algorithm is reliable,accurate,stable as well as robust for active noise control *** accuracy of the proposed nature inspired computing of flower pollination is in good agreement with the state of the art counterpart solvers based on variants of genetic algorithms,particle swarm optimization,backtracking search optimization algorithm,fireworks optimization algorithm along with their memetic combination with local search ***,the central tendency and variation based statistical indices further validate the consistency and reliability of the proposed scheme mimic the mathematical model for the process of flower pollination systems.

关键词： Active noise control computational heuristics volterra filtering flower pollination algorithm

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Bio-inspired heuristics hybrid with interior-point method for active noise control systems without identification of secondary path

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Frontiers of Information Technology & Electronic Engineering 2018年第2期19卷 246-259页

作者： Muhammad Asif Zahoor RAJA Muhammad Saeed ASLAM naveed ishtiaq chaudhary Wasim Ullah KHAN Department of Electrical Engineering COMSATS Institute of Information TechnologyAttock Campus Pakistan Institute of Engineering and Applied Sciences Department of Electronic Engineering International Islamic University

In this study, hybrid computational frameworks are developed for active noise control（ANC） systems using an evolutionary computing technique based on genetic algorithms（GAs） and interior-point method（IPM）, following an integrated approach, GA-IPM. Standard ANC systems are usually implemented with the filtered extended least mean square algorithm for optimization of coefficients for the linear finite-impulse response filter, but are likely to become trapped in local minima（LM）. This issue is addressed with the proposed GA-IPM computing approach which is considerably less prone to the LM problem. Also, there is no requirement to identify a secondary path for the ANC system used in the scheme. The design method is evaluated using an ANC model of a headset with sinusoidal, random, and complex random noise interferences under several scenarios based on linear and nonlinear primary and secondary paths. The accuracy and convergence of the proposed scheme are validated based on the results of statistical analysis of a large number of independent runs of the algorithm.

关键词： Active noise control (ANC) Filtered extended least mean square (FXLMS) Memetic computing Genetic algorithms Interior-point method

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Enhanced bio-catalytic and tolerance properties of an indigenous cellulase through xerogel immobilization

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Advances in Bioscience and Biotechnology 2012年第4期3卷 308-313页

作者： Hafiz Muhammad Nasir Iqbal Shagufta Kamal ishtiaq Ahmed Muhammad Tahir naveed Department of Chemistry and Biochemistry University of Agriculture Faisalabad Pakistan Transgenic Lab Center of Agriculture Biochemistry and Biotechnology (CABB) University of Agriculture Faisalabad Pakistan

Today, demand exists for cost-effective production of industrially important enzymes from entire scientific sectors. By keeping in mind the extensive industrial applications of cellulase, this study was performed to immobilize the indigenous enzyme produced from Trichoderma viride under pre-optimized SSF of an agricultural waste material, wheat straw. To enhance the bio-catalytic and tolerance properties of the present enzyme gel matrix immobilization engineering was applied. Previously, 2.33~fold purified novel cellulase was immobilized in to a xerogel matrix of TMOS and PTMS. FTIR spectroscopy confirmed the successful immobilization of cellulase. The free and immobilized cellulase was characterized and stability profile showed that after 24 h incubation, immobilization enhanced the thermo-stability up to 75% against 80℃ as compare to the free enzyme. Xerogel matrix immobilization enhanced the catalytic efficiency of entrapped enzyme than that of the free cellulase. Among activators/inhibitors SDS, EDTA, and Hg2+ showed inhibitory effect while, gel matrix immobilization enhanced 80% tolerance capacity of the cellulase against inactivating agents.

关键词： Bio-Catalysis Cellulase T. viride Immobilization Characterization

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Structural Interpretation and Petrophysical Analysis for Reservoir Sand of Lower Goru, Miano Area, Central Indus Basin, Pakistan

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International Journal of Geosciences 2017年第4期8卷 379-392页

作者： Muhammad Sohail Khan Farhana Masood Qadeer Ahmed ishtiaq Ahmed Khan Jadoon naveed Akram School of Earth and Space Sciences University of Science and Technology of China Hefei China Quaid-i-Azam University Islamabad Pakistan Oil and Gas Development Company Limited Islamabad Pakistan COMSATS Institute of Information Technology Abbottabad Pakistan

The main purpose of this research is to estimate the structural analysis and hydrocarbon potential of Miano Block by using seismic and well log techniques. Miano area hosts a number of gas fields with structural and stratigraphic traps. The area is located in Central Indus Basin which is a part of an extensional regime exhibiting normal faulting due to the split of the Indian Plate firstly from Africa and then from Madagascar and Seychelles. Miano area recognized as a proven petroleum province which has complex tectonic history of Cretaceous extensional and overprints of Tertiary strike-slip tectonics. The area has prospect with accumulation of hydrocarbons in structural and stratigraphic traps including pinchouts. NW-SE oriented Khairpur and Mari Highs are main structural features with impact on the fault system. The sands of Lower Goru of Lower Cretaceous age are acting as a reservoir in the area. The area has great potential of hydrocarbons for which more exploratory wells are required to be drilled with better insight of structural and stratigraphic traps.

关键词： Seismic Interpretation Time-and-Depth Contour Map 3D View Synthetic Seismograph Reservoir Estimation

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