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BE-RPL:Balanced-load and Energy-efficient RPL

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Computer systems science & Engineering 2023年第4期45卷 785-801页

作者： s.Jagir hussain M.Roopa Department of Electronics and Communication Engineering SRM Institute of Science and TechnologyRamapuramChennaiIndia

Internet of Things(IoT)empowers imaginative applications and permits new services when mobile nodes are *** IoT-enabled low-power and lossy networks(LLN),the Routing Protocol for Low-power and Lossy Networks(RPL)has become an established standard routing *** under standard RPL remains a difficult issue as it causes continuous path disturbance,energy loss,and increases the end-to-end delay in the *** this unique circumstance,a Balanced-load and Energy-efficient RPL(BE-RPL)is *** is a routing technique that is both energy-efficient and *** responds quicker to link breakage through received signal strength-based mobility monitoring and selecting a new preferred parent *** proposed system also implements load balancing among stationary nodes for leaf node *** nodes with more leaf nodes are restricted from participating in the election for a new preferred *** performance of BE-RPL is assessed using the COOJA *** improves the energy use,network control overhead,frame acknowledgment ratio,and packet delivery ratio of the network.

关键词： COOJA simulator energy handover internet of things BE-RPL load balancing low-power and lossy network mobility routing protocols RPL

A novel hybrid cybersecurity scheme against false data injection attacks in automated power systems

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Protection and Control of Modern Power systems 2023年第3期8卷 1-15页

作者： shahbaz hussain s.M.suhail hussain Marziyeh Hemmati Atif Iqbal Rashid Alammari stefano Zanero Enrico Ragaini Giambattista Gruosso Department of Electrical Engineering Qatar UniversityDohaQatar Dipartimento di Elettronica Informazione e BioingegneriaPolitecnico di MilanoMilanItaly Department of Electrical Engineering King Fahd University of Petroleum and Minerals(KFUPM)DhahranSaudi Arabia Interdisciplinary Research Center for Renewable Energy and Power systems(IRC-REPs) King Fahd University of Petroleum and Minerals(KFUPM)DhahranSaudi Arabia

The conventional power systems are evolving as smart *** recent times cyberattacks on smart grids have been *** different attacks,False Data Injection(FDI)is considered as an emerging threat that has significant *** exploiting the vulnerabilities of IEC 61850 Generic Object-Oriented substation Events(GOOsE)and sam-pled Values(sV)attackers can launch different FDI *** this paper,a real-time set up capable of simulating FDI on GOOsE and sV protocols is developed to evaluate the impact of such attacks on power *** 62351 stipulates cybersecurity guidelines for GOOsE and sV,but only at communication or Information Technology(IT)*** there is a need to develop a holistic security both at IT and Operation Technology(OT)*** this regard,a novel sequence content resolver-based hybrid security scheme suitable to tackle FDI attacks on GOOsE and sV is ***,the computational performance of the proposed hybrid security scheme is presented to demonstrate its applicability to the time critical GOOsE and sV protocols.

关键词： Cyberattacks False data injection Real time digital simulation IEC 61850 Communication protocols Control authority Countermeasures

Conjugate natural convection of non-Newtonian hybrid nanofluid in wavy-shaped enclosure

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Applied Mathematics and Mechanics(English Edition) 2022年第3期43卷 447-466页

作者： s.hussain T.TAYEBI T.ARMAGHANI A.M.RAsHAD H.A.NABWEY Department of Mathematics Capital University of Science and TechnologyIslamabad 44000Pakistan Lehrstuhl III Department of MathematicsTechnical University of DortmundDortmund 44227Germany Faculty of sciences and Technology University of Bordj Bou ArreridjEl-Anasser 34030Algeria Department of Engineering West Tehran BranchIslamic Azad UniversityTehran 11365Iran Department of Mathematics Aswan UniversityFaculty of ScienceAswan 81528Egypt Department of Mathematics College of Science and Humanities in Al-KharjPrince Sattam Bin Abdulaziz UniversityAl-Kharj 11942Saudi Arabia Department of Basic Engineering science Faculty of EngineeringMenou¯a UniversityShebin El-Kom 32511Egypt

The present study concerns the modelization and numerical simulation for the heat and flow exchange characteristics in a novel configuration saturated with a nonNewtonian Ag-MgO hybrid *** wavy shaped enclosure is equipped with onequarter of a conducting solid *** system of equations resulting from the mathematical modeling of the physical problem in its dimensionless form is discretized via the higher-order Galerkin-based finite element method(GFEM).The dependency of various factors and their interrelationships affecting the hydro-thermal behavior and heat exchange rate are *** numerical experiments reveal that the best heat transfer rate is achieved for the pseudo-plastic hybrid nanoliquid with high Rayleigh number and thermal conductivity ratio and low Hartmann ***,the power-law index has a major effect in deteriorating the heat convection at high Rayleigh number.

关键词： natural convection waved-shaped cavity magnetic field hybrid nanofluid higher order finite element method(FEM)

New Concepts on Quadripartitioned Bipolar single Valued Neutrosophic Graph

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Computer Modeling in Engineering & sciences 2022年第1期130卷 559-580页

作者： s.satham hussain G.Muhiuddin N.Durga D.Al-Kadi PG and Research Department of Mathematics Jamal Mohamed College(Autonomus)Tiruchirappalli620020India Department of Mathematics University of TabukTabuk71491Saudi Arabia Division of Mathematics School of Advanced SciencesVellore Institute of Technology-Chennai CampusChennai600127India Department of Mathematics and statistic College of ScienceTaif UniversityTaif21944Saudi Arabia

The partition of indeterminacy function of the neutrosophic set into the contradiction part and the ignorance part represent the quadripartitioned single valued neutrosophic *** this work,the new concept of quadripartitioned bipolar single valued neutrosophic graph is established,and the operations on it are *** Cartesian product,cross product,lexicographic product,strong product and composition of quadripartitioned bipolar single valued neutrosophic graph are *** proposed concepts are illustrated with examples.

关键词： Quadripartitioned bipolar single valued neutrosophic graph operations of quadripartitioned bipolar single valued neutrosophic graph Cartesian product

The Effect of spectral Index Parameter κ on Obliquely Propagating solitary Wave structures in Magneto-Rotating Plasmas

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Chinese Physics Letters 2012年第6期29卷 211-214页

作者： s.hussain Theoretical Plasma Physics Division PINSTECHNiloreIslamabad 44000Pakistan Department of Physics and Applied Mathematics PIEAs NiloreIslamabad 44000Pakistan

Nonlinear ion-acoustic solitary wave structures in collisionless,non-relativistic,homogenous,magneto-rotating plasma,in which the electron species follow the kappa distribution function,are *** Korteweg-de Vries (KdV) equation is derived by using the reductive perturbation method,and the effects of different plasma parameters on the obliquely propagating nonlinear solitary wave structures in the magneto-rotating plasma are *** is noticed that the spectral index parameter κ significantly modifies the nonlinear wave structure.

关键词： structure rotating solitary

The influence of Landau quantization on the propagation of solitary structures in collisional plasmas

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Communications in Theoretical Physics 2020年第8期72卷 148-153页

作者： s hussain N Akhtar Theoretical Physics Division(TPD) PINSTECHPO NiloreIslamabad 44000Pakistan

In this work, we study damped ion acoustic solitary wave structures in magnetized dense plasmas. The collisional effects of ions with electrons and neutrals are considered. The trapping effects of electrons and Landau quantization are included in the plasma model under consideration. We assume that magnetic field is quantized such that the condition■ is satisfied. We have derived the damped Korteweg–de Vries(dKdV) equation by using small amplitude reductive perturbation technique. The time-dependent analytical and numerical solutions of the dKdV equation are presented. For numerical solutions we apply a two level finite difference scheme with the help of the Runge Kutta method. The effects of variations of different plasma parameters on the propagation characteristics of damped solitary structures in the presence of collisions are discussed.

关键词： soliton collisional plasmas finite difference method reductive perturbation method

size control synthesis of sulfur doped titanium dioxide (anatase) nanoparticles,its optical property and its photo catalytic reactivity for CO_2 + H_2O conversion and phenol degradation

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Journal of Natural Gas Chemistry 2009年第4期18卷 383-391页

作者： s. Tajammul hussain Khaiber Khan R. hussain National Centre For Physics Quaid-i-Azam University Department of Chemistry Quaid-i-Azam University COMsATs Institute of Information Technology

sulfur doped anatase TiO2 nanoparticles （3 nm- 12 nm） were synthesized by the reaction of titanium tetrachloride, water and sulfuric acid with addition of 3 M NaOH at room temperature. The electro-optical and photocatalytic properties of the synthesized sulfur doped TiO2 nanoparticles were studied along with Degussa commercial TiO2 particles （24 nm）. The results show that band gap of TiO2 particles decreases from 3.31 to 3.25 eV and for that of commercial TiO2 to 3.2 eV when the particle sizes increased from 3 nm to 12 nm with increase in sulfur doping. The results of the photocatalytic activity under UV and sun radiation show maximum phenol conversion at the particle size of 4 nm at 4.80% s-doping. similar results are obtained using UV energy for both phenol conversion and conversion of CO2＋H2O in which formation of methanol, ethanol and proponal is observed. Production of methanol is also achieved on samples with a particle size of 8 and 12 nm and sulfur doping of 4.80% and 5.26%. For TiO2 particle of 4 nm without s doping, the production of methanol, ethanol and proponal was lower as compared to the s-doped particles. This is attributed to the combined electronic effect and band gap change, s dopant, specific surface area and the light source used.

关键词： s doped TiO2 photocatalyst CO2 conversion phenol degradation UV IR radiation

Hydromagnetic oscillatory Couette flow in rotating system with induced magnetic field

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Applied Mathematics and Mechanics(English Edition) 2014年第10期35卷 1331-1344页

作者： G.s.sETH s.M.hussain s.sARKAR Department of Applied Mathematics Indian School of Mines Department of Mathematics O.P.Jindal Institute of Technology

This paper presents a study of hydromagnetic Couette flow of an incompress- ible and electrically conducting fluid between two parallel rotating plates, one of which is oscillating in its own plane. A uniform transverse magnetic field is used, and the induced magnetic field is taken into account. The exact solution to the governing equations is obtained in a closed form. The solution to the problem in the case of vanishing and small finite magnetic Prandtl numbers is also derived from the general solution. The asymp- totic behavior of the solution for large values of the frequency parameter is analyzed to gain some physical insights into the flow pattern. Expressions for the shear stress at both the oscillatory and stationary plates due to primary and secondary flows and mass flow rate in the primary and secondary flow directions are also obtained. The results of the fluid velocity and the induced magnetic field are presented. The shear stresses on the plates due to the primary and secondary flows and the corresponding mass flow rates are presented in a tabular form.

关键词： magnetic interaction parameter Ekman number frequency parameter,hydromagnetic stokes-Ekman boundary layer magnetic diffusion boundary layer

Effects of Zr substitution on structural,morphological,and magnetic properties of bismuth iron oxide phases

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Chinese Physics B 2017年第8期26卷 450-455页

作者： A Asif M Hassan s Riaz s Naseem s s hussain Materials Growth and simulation Laboratory Department of PhysicsUniversity of the PunjabLahore-54590Pakistan Center of Excellence in solid state Physics University of the PunjabLahore-54590Pakistan

The present study involves co-precipitation method to grow un-doped and Zr-doped bismuth iron oxide with x_（Zr）=0.10–0.30. The molar solutions of ferric chloride（FeCl_3）, zirconyle chloride（ZrOCl_2）, and bismuth chloride（BiCl_3） are prepared in distilled water, and are allowed to react with sodium hydroxide（Na OH）. The synthesized powders are then converted into pellets, which are sintered at 500℃ for two hours in a muffle furnace. X-ray diffraction（XRD） shows multi-phase formation in un-doped and Zr doped samples. scanning electron microscope（sEM） depicts layered structure at low Zr concentration x_（Zr）= 0.10, while uniform surface with smaller grains and voids is observed at x_（Zr）= 0.20, but at x_（Zr）= 0.30, cracks and voids become prominent. The ferromagnetic nature of the un-doped sample is observed by vibrating sample magnetometer（VsM）, while paramagnetic behavior appears due to Zr doping. The ferromagnetism in un-doped sample is lost by Zr doping, which is due to the formation of additional Fe–O–Zr bonds that induce paramagnetic behavior.

关键词： co-precipitation multi-phases ferromagnetism paramagnetism BiFeO3