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De-convolution and De-noising of SAR Based GPS Images Using Hybrid Particle Swarm Optimization

Chinese Journal of Electronics 2023年第1期32卷 166-176页

作者： Rizwan Sadiq muhammad Bilal Qureshi muhammad mohsin khan Dept.of Electrical and Electronic Engineering Koc University Dept.of Electrical and Computer Engineering COMSATS University Dept.of Radiology and Biomedical Imaging Yale University Sino-Pak Center for Artificial Intelligence (SPCAI) Pak-Austria Fachhochschule:Institute of Applied Sciences and Technology (PAF-IAST)

Synthetic aperture radar(SAR) imaging is an efficient strategy which exploits the properties of microwaves to capture images. A major concern in SAR imaging is the reconstruction of image from back scattered signals in the presence of noise. The reflected signal consist of more noise than the target signal and it is a challenging problem to reduce the noise in the collected signal for better reconstruction of an image. Current studies mostly focus on filtering techniques for noise removal. This can result in an undesirable point spread function causing extreme smearing effect in the desired image. In order to handle this problem, a computational technique, particle swarm optimization(PSO) is used for de-noising purpose and later the target performance is further improved by an amalgamation of Wiener ***, to improve the de-noising performance we have exploited the singular value decomposition based morphological filtering. To justify the proposed improvements we have simulated the proposed techniques and results are compared with the conventional existing models. The proposed method revealed considerable decrease in mean square error compared to Wiener filter and PSO techniques. Quantitative analysis of image restoration quality are also presented in comparison with Wiener filter and PSO based on the improvement in signal to noise ratio and peak signal to noise ratio.

关键词： Radar remote sensing Wiener filters Filtering Statistical analysis Radar polarimetry Particle swarm optimization Synthetic aperture radar

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Oblique propagation of nonlinear ion-acoustic cnoidal waves in magnetized electron–positron–ion plasmas with nonextensive electrons

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Plasma Science and Technology 2021年第3期23卷 76-81页

作者： muhammad KHALID Ghufran ULLAH mohsin khan Sheraz AHMAD Sardar NABI Daud khan Depatment of Physics Govermment Post Gaduate College MardanMardan 23200Pakistan Department of Physics Islamia College Peshawar(Public Sector University)Peshawar 25120Pakistan Department of Physics Government Post Graduate College NowsheraNowshera 24100Pakistan

Theoretical investigation of nonlinear electrostatic ion-acoustic cnoidal waves(IACWs) is presented in magnetized electron–positron–ion plasma with nonextensive electrons and Maxwellian positrons. Using reductive perturbation technique, Korteweg–de Vries equation is derived and its cnoidal wave solution is analyzed. For given plasma parameters, our model supports only positive potential(compressive) IACW structures. The effect of relevant plasma parameters(viz., nonextensive parameter q, positron concentration p, temperature ratio σ,obliqueness l3) on the characteristics of IACWs is discussed in detail.

关键词： ion-acoustic cnoidal waves KdV equation q-distribution

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Electron acoustic solitary waves in unmagnetized nonthermal plasmas

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Communications in Theoretical Physics 2021年第5期73卷 80-84页

作者： muhammad Khalid Aqil khan mohsin khan Daud khan Sheraz Ahmad Ata-ur-Rahman Department of Physics Government Post Graduate College MardanMardan 23200Pakistan Theoretical Plasma Physics Group Department of PhysicsIslamia College Peshawar(Public Sector University)Peshawar 25120Pakistan Department of Physics Government Post Graduate College NowsheraNowshera 24100Pakistan

Electron acoustic(EA)solitary waves(SWs)are studied in an unmagnetized plasma consisting of hot electrons(following Cairns-Tsalli distribution),inertial cold electrons,and stationary *** employing a reductive perturbation technique(RPT),the nonlinear Korteweg–de Vries(KdV)equation is derived and its SW solution is ***,the effects of plasma parameters such as the nonextensivity parameter(q),the nonthermality of electrons(α),and the cold-to-hot electron density ratio(β)are investigated.

关键词： Electron acoustic solitons KdV equation Cairns-Tsalli distribution

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Design of Computer Methods for the Solution of Cervical Cancer Epidemic Model

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Computers, Materials & Continua 2022年第1期70卷 1649-1666页

作者： Ali Raza muhammad Rafiq Dalal Alrowaili Nauman Ahmed Ilyas khan Kottakkaran Sooppy Nisar muhammad mohsin Department of Mathematics National College of Business Administration and Economics LahorePakistan Department of Mathematics Faculty of SciencesUniversity of Central PunjabLahore54500Pakistan Mathematics Department College of ScienceJouf UniversityP.O.Box:2014SakakaSaudi Arabia Department of Mathematics and Statistics The University of LahoreLahorePakistan Department of Mathematics College of Science Al-ZulfiMajmaah UniversityAl-Majmaah11952Saudi Arabia Department of Mathematics College of Arts and Science at Wadi AldawaserPrince Sattam bin Abdulaziz UniversityAlkharj11991Kingdom of Saudi Arabia Department of Mathematics Technische Universitat ChemnitzGermany

Nonlinear modelling has a significant role in different disciplines of sciences such as behavioral,social,physical and biological *** structural properties are also needed for such types of disciplines,as dynamical consistency,positivity and boundedness are the major requirements of the models in these *** more thing,this type of nonlinear model has no explicit *** the sake of comparison its computation will be done by using different computational ***,the aforementioned structural properties have not been restored in the existing computational techniques in ***,the construction of structural preserving computational techniques are *** nonlinearmodel for cervical cancer is constructed by parametric perturbation ***-known computer methods are considered for the computation of cervical cancer *** well-known existing methods in literature are Euler Maruyama,Euler and Runge *** finite difference method or Implicitly driven explicit method is first time considered for aforesaid model under the assumptions given byMickens in a stochastic ***,the aforementioned existing methods did not reinstate structural properties of cervical cancer dynamics in the human *** plannedmethod is structural preserving and a powerful tool for all nonlinear models of biomedical engineering *** have verified that existing computational methods do not preserve dynamical ***,the implicitly driven explicit method is a good device for dynamical *** the support of assertions,convergence analysis of implicitly driven explicit method is presented.

关键词： Cervical cancer model differential equations computer methods convergence analysis

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Stochastic Analysis for the Dynamics of a Poliovirus Epidemic Model

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Computer Modeling in Engineering & Sciences 2023年第7期136卷 257-275页

作者： Ali Raza Dumitru Baleanu Zafar Ullah khan muhammad mohsin Nauman Ahmed muhammad Rafiq Pervez Anwar Department of Mathematics Government Maulana Zafar Ali Khan Graduate College WazirabadPunjab Higher Education Department(PHED)Lahore54000Pakistan Department of Mathematics Cankaya UniversityBalgatAnkara06530Turkey Department of Medical Research China Medical UniversityTaichung40402Taiwan Institute of Space Sciences Magurele-Bucharest077125Romania Department of Dermatology Rashid Latif Medical College LahoreLahore54000Pakistan Department of Mathematics Technische Universitat ChemnitzChemnitz6209111Germany Department of Mathematics and Statistics The University of LahoreLahore54590Pakistan Department of Mathematics Faculty of Science and TechnologyUniversity of Central PunjabLahore54000Pakistan Department of Biochemistry University of SialkotSialkot51311Pakistan

Most developing countries such as Afghanistan,Pakistan,India,Bangladesh,and many more are still fighting against *** to the World Health Organization,approximately eighteen million people have been infected with poliovirus in the last two *** Asia,still,some countries are suffering from the *** stochastic behavior of the poliovirus through the transition probabilities and non-parametric perturbation with fundamental properties are *** basic properties of the deterministic model are studied,equilibria,local stability around the stead states,and reproduction *** Maruyama,stochastic Euler,and stochastic Runge-Kutta study the behavior of complex stochastic differential *** main target of this study is to develop a nonstandard computational method that restores dynamical features like positivity,boundedness,and dynamical ***,the existing methods failed to fix the actual behavior of the *** comparison of the proposed approach with existing methods is investigated.

关键词： Poliovirus model differential equations methods analysis

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Current scenario and potential of biodiesel production from waste cooking oil in Pakistan: An overview

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2238-2250页

作者： Haris Mahmood khan Chaudhry Haider Ali Tanveer Iqbal Saima Yasin muhammad Sulaiman Hamayoun Mahmood muhammad Raashid mohsin Pasha BozhongMu Department of Chemical Polymer and Composite Materials EngineeringUniversity of Engineering&TechnologyKSK CampusLahore 54890Pakistan East China University of Science and Technology Shanghai 200237China

Biodiesel utilization has been rapidly growing worldwide as the prime alternative to petrodiesel due to a global rise in diesel fuel demand along with hazardous emissions during its thermochemical ***,several debatable issues including feedstock availability and price,fuel and food competition,changes in land use and greenhouse gas emission have been raised by using edible as well as inedible feedstocks for the production of ***,non-crop feedstocks could be a promising *** this article,waste cooking oils have been recommended as a suitable option for biodiesel production bearing in mind the current national *** important factors such as the quantity of waste cooking oil produced,crude oil and vegetable oil import expenses,high-speed diesel imports,waste management issues and environmental hazards are ***,process simulation and operating cost evaluation of an acid catalyzed biodiesel production unit are also *** simulation results show that the production cost of waste cooking oil-based biodiesel is about 0.66 USD·*** believe that the present overview would open new pathways and ideas for the development of biofuels from waste to energy approach in Pakistan.

关键词： Biodiesel Waste cooking oil Feedstock sustainability Energy demand Pakistan

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Electrical conductivity retention and electrochemical activity of CSA doped graphene/gold nanoparticle@ polyaniline composites

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Progress in Natural Science:Materials International 2016年第4期26卷 341-346页

作者： Md.Akherul Islam M.Ehtisham khan muhammad mohsin Hossain Mudassir Hasan Department of Pharmacy Atish Dipankar University of Science & Technology School of Chemical Engineering Yeungnam University

This paper reports the synthesis of CTAB mediated CSA doped PANI and GN/GNP@ PANI composite nanofibers. The as synthesized composite nanofibers were examined by TEM, SEM, XRD, Raman spectroscopy; UV–visible diffused reflectance spectroscopy and TGA. The CTAB mediated CSA doped composite nanofibers showed 59% higher DC electrical conductivity at ambient temperature than that of PANI,which might be due to the enhancement in the mobility of the charge carriers and reduction in hopping distance in the composite system. The CTAB mediated CSA doped composite nanofibers compared to PANI was observed to be showing enhanced DC electrical conductivity retention after various cycles of heating, suggesting an enhancement in thermal stability of the composite structure, which could be attributed to the synergistic effect of GN,GNP and PANI. Additionally, the composite nanofibers showed greater electrochemical activity and better capacitive performance and reduced optical bandgap than that of PANI.

关键词： GN GNP Poly aniline Conductivity retention Thermal stability Capacitor

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Principal Component Analysis and Minimum Description Length Criterion Based on Through-Wall Image Enhancement

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Chinese Physics Letters 2013年第4期30卷 45-47页

作者： muhammad mohsin Riaz Abdul Ghafoor Department of Electrical Engineering College of SignalsNational University of Sciences and Technology(NUST)IslamabadPakistan

A through-wall image enhancement scheme is proposed based on principal component analysis and minimum description length *** minimum description length criterion is used with principal component analysis to extract target eigen *** proposed scheme is capable of extracting multiple targets from heavy cluttered through-wall *** results of the proposed scheme are compared with existing schemes on the basis of quantitative analysis and visual inspection.

关键词： criterion. Image scheme

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Phyto-Toxicity of Chromium in Maize： Oxidative Damage, Osmolyte Accumulation, Anti-Oxidative Defense and Chromium Uptake

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Pedosphere 2017年第2期27卷 262-273页

作者： Shakeel Ahmad ANJUM Umair ASHRAF Imran khan mohsin TANVEER muhammad SHAHID Abdul SHAKOOR WANG Longchang College of Agronomy and Biotechnology Southwest University/Engineering Research Center of South Upland Agriculture Ministry of Education Chongqing 400716 (China) Department of Agronomy University of Agriculture Faisalabad 38040 (Pakistan) Department of Crop Science and Technology College of Agriculture South China Agricultural University Guangzhou 510642 (China) Scientific Observing and Experimental Station of Crop Cultivation in South China Ministry of Agriculture Guangzhou 510642 (China) School of Land and Food University of Tasmania Hobart 7005 (Australia)

Agricultural production systems are immensely exposed to different environmental stresses in which heavy metal stress receives serious concerns. This study was conducted to explore the deleterious effects of different chromium （Cr） stress levels, i.e., O, 30, 60, 90, 120, and 150 μmol L^-1, on two maize genotypes, Wandan 13 and Runnong 35. Both genotypes were evaluated by measuring their growth and yield characteristics, Cr accumulation in different plant tissues, alterations in osmolyte accumulation, generation of reactive oxygen species （ROS）, and anti-oxidative enzyme activity to scavenge ROS. The results showed that Cr stress decreased the leaf area, cob formation, 100-grain weight, shoot fresh biomass, and yield formation, while Cr accumulation in different maize tissues was found in the order of roots 〉 leaves 〉 stem ~ seeds in both genotypes. The increased Cr toxicity resulted in higher free proline, soluble sugars and total phenolic contents, and lower soluble protein contents. However, enhanced lipid peroxidation was noticed in the forms of malondialdehyde, hydrogen peroxide （H2O2） and thiobarbituric acid reactive substance accumulation, and electrolyte leakage. The hyperactivity of superoxide dismutase, peroxidase, catalase, ascorbate peroxidase, especially glutathione peroxidase and glutathione reductase indicated that these anti-oxidative enzymes had a central role in protecting maize from Cr toxicity, especially for Wandan 13. Moreover, higher uptake and less translocation of Cr contents into the grains of Wandan 13 implied its importance as a potential candidate against soil Cr pollution.

关键词： agronomic characteristics anti-oxidative enzyme activity Cr accumulation Cr translocation heavy metal stress reactiveoxygen species

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Survey and technological analysis of laser and its defense applications

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Defence Technology（防务技术） 2021年第2期17卷 583-592页

作者： Syed Affan Ahmed Mujahid mohsin Syed muhammad Zubair Ali Department of Avionics Engineering-College of Aeronautical Engineering(CAE) National University of Sciences and Technology(NUST)RisalpurKPKPakistan

The laser technology has made remarkable progress over the past couple of *** is being widely employed in diverse domains,such as holography,space sciences,spectroscopy,medical sciences,micro and power electronics,industrial engineering,and most distinctively,as directed energy military *** to their active transmissions,laser systems are similar to microwave radars to some extent;however,unlike conventional radars,the laser operates at very high frequencies thus making it a potent enabler of narrow-beam and high energy aerial deployments,both in offensive and defensive *** modern avionics systems,laser target indicators and beam riders are the most common devices that are used to direct the Laser Guided Weapons(LGW)accurately to the ground ***,compact size and outstanding angular resolution of laser-based systems motivate their use for drones and unmanned aerial ***,the narrow-beam divergence of laser emissions offers a low probability of intercept,making it a suitable contender for secure transmissions and safety-critical ***,the developments in space sciences and laser technology have given synergistic potential outcomes to use laser systems in space *** paper comprehensively reviews laser applications and projects for strategic defense actions on the ground or in ***,a detailed analysis has been done on recent advancements of the laser technology for target indicators and *** also reviews the advancements in the field of laser communications for surveillance,its earlier state of the art,and ongoing scientific research and advancements in the domain of high energy directed laser weapons that have revolutionized the evolving military *** offering a comprehensive taxonomy,the paper also critically analyzes some of the recent contributions in the associated domains.

关键词： Laser systems Laser military applications Directed energy weapons Non-lethal weapons Laser military projects Survey Taxonomy

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