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Blockchain-as-a-Utility for Next-Generation Healthcare Internet of Things

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Computers, Materials & Continua 2021年第7期68卷 359-376页

作者： Alaa Omran Almagrabi Rashid Ali Daniyal Alghazzawi Abdullah AlBarakati tahir Khurshaid Department of Information Systems Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia School of Intelligent Mechatronics Engineering Sejong UniversitySeoul05006Korea Department of Electrical Engineering Yeungnam UniversityGyeongsan38541Korea

The scope of the Internet of Things(IoT)applications varies from strategic applications,such as smart grids,smart transportation,smart security,and smart healthcare,to industrial applications such as smart manufacturing,smart logistics,smart banking,and smart *** the advancement of the IoT,connected devices become smart and intelligent with the help of sensors and ***,issues and challenges need to be addressed regarding the data reliability and protection for signicant nextgeneration IoT applications like smart *** these next-generation applications,there is a requirement for far-reaching privacy and security in the ***,blockchain systems have emerged as a key technology that changes the way we exchange *** emerging technology has revealed encouraging implementation scenarios,such as secured digital *** a technical advancement,the blockchain network has the high possibility of transforming various industries,and the next-generation healthcare IoT(HIoT)can be one of those *** have been several studies on the integration of blockchain networks and ***,blockchain-as-autility(BaaU)for privacy and security in HIoT systems requires a systematic *** paper reviews blockchain networks and proposes BaaU as one of the *** proposed BaaU-based framework for trustworthiness in the next-generation HIoT systems is divided into two *** rst scenario suggests that a healthcare service provider integrates IoT sensors such as body sensors to receive and transmit information to a blockchain network on the IoT *** second proposed scenario recommends implementing smart contracts,such as Ethereum,to automate and control the trusted devices’subscription in the HIoT services.

关键词： blockchain next-generation IoT privacy and security healthcare IoT complex healthcare applications

A Theoretical Investigation of the SARS-CoV-2Model via Fractional Order Epidemiological Model

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Computer Modeling in Engineering & Sciences 2023年第5期135卷 1295-1313页

作者： tahir Khan Rahman Ullah Thabet Abdeljawad Manar A.Alqudah Faizullah Faiz Department of Mathematics and Statistics Woman UniversitySwabiKhyber Pakhtunkhwa23501Pakistan Department of Mathematics and Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Department of Medical Research China Medical UniversityTaichung40402Taiwan Department of Mathematical Sciences Faculty of SciencesPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Basic Sciences and Humanities College of Electrical and Mechanical EngineeringNational University of Sciences and Technology(NUST)Islamabad44320Pakistan

We propose a theoretical study investigating the spread of the novel coronavirus(COVID-19)reported inWuhan City of China in *** develop a mathematical model based on the novel corona virus’s characteristics and then use fractional calculus to fractionalize *** fractional order epidemicmodels have been formulated and analyzed using a number of iterative and numerical approacheswhile the complications arise due to singular *** use the well-known Caputo-Fabrizio operator for the purposes of fictionalization because this operator is based on the non-singular ***,to analyze the existence and uniqueness,we will use the well-known fixed point *** also prove that the considered model has positive and bounded *** also draw some numerical simulations to verify the theoretical work via graphical *** believe that the proposed epidemic model will be helpful for health officials to take some positive steps to control contagious diseases.

关键词： Fractional epidemiological model for corona virus disease caputo-fabrizio operator numerical simulation

Frequency of HER2/neu overexpression in adenocarcinoma of the gastrointestinal system

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World Journal of Gastroenterology 2014年第19期20卷 5889-5896页

作者： Sadaf Farzand tahir Siddique Kanwal Saba Mulazim Hussain Bukhari Department of Pathobiology King Edward Medical UniversityLahore 54000Pakistan

AIM: To determine the frequency of HER2/neu protein overexpression in gastric (group A), small intestine (group B), and colorectal (group C) adenocarcinoma.

关键词： HER2/neu Immunohistochemistry Adenocarcinoma Gastrointestinal system

Adaptive Islanding Strategy of Sustainable Distribution System for Post-restoration Failures

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1517-1531页

作者： Qifang Chen Kaka Sanaullah Ammar tahir Mazhar Hussain Ali Raza Meer Mingchao Xia the Beijing Jiaotong University 100044Beijing China.

The power system is susceptible to failures,and further interruptions by subsequent outages which may cause extended events in the formed *** of the literature reviewed has focused on island formation after the disconnection of the main grid ***,there is still a need to analyze the post-restoration failures to improve the resilience and minimize the pro-longed disconnection of priority *** current research investigates the behavior of islanding schemes under secondary collapses and provides an adaptive solution to withstand such severities.A new total active critical node finding methodology is presented which eases the rearrangement of the initially formed island when affected by multiple faults or DG *** concept of single islanding with the coordination of multiple DGs is also discussed,in which the DG's power-sharing capacity is not confined to the boundaries of only particular *** economic plan is also proposed to select the controlled type DGs to reduce the overall cost of generation by reducing fuel *** evaluate the network's effectiveness and robustness,the proposed adaptive method is deployed on an updated IEEE 69-bus distribution *** Terms-Active distribution network,distributed generation,multi-objective,post-restoration,single islanding.

关键词： Active distribution network distributed generation multi-objective post-restoration single islanding.

Experimental Investigation of the Micro-Milling of Additively Manufactured Titanium Alloys:Selective Laser Melting and Wrought Ti6Al4V

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Chinese Journal of Mechanical Engineering 2024年第6期37卷 90-102页

作者： Muhammad Rehan Tao He Ahmed KKhalil Danish tahir Wai Sze Yip Sandy Suet To State Key Laboratory of Ultra‑precision Machining Technology Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Production Engineering Department Faculty of EngineeringHelwan UniversityCairoEgypt School of Fashion and Textile The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

In recent years,additive manufacturing(AM)has gained popularity in the aerospace,automobile,and medical industries due to its ability to produce complex profiles with minimal ***-milling is recommended for machining AM-based parts to improve surface quality and form ***,the machinability of a titanium alloy(Ti6Al4V)manufactured using selective laser melting(SLM)is explored and compared to that of wrought Ti6Al4V in *** experimental results reveal the surface topology,chip morphology,burr formation,and tool wear characteristics of both *** micro-milling of AM-based Ti6Al4V generates a surface roughness of 19.2 nm,which is 13.9%lower than that of wrought workpieces,and this component exhibits less tool ***-based Ti6Al4V produces continuous chips,while wrought Ti6Al4V yields relatively short ***,SLM-fabricated Ti6Al4V exhibits smaller burrs after micro-milling than wrought *** the higher hardness of SLM-based Ti6Al4V,it demonstrates better machinability than wrought Ti6Al4V,resulting in better surface quality with lower tool wear levels and shorter burr *** study provides valuable insights into future research on postprocessing AM-based titanium parts,especially using micro-milling.

关键词： Micro-milling Additive manufacturing Titanium alloys Surface morphologies Chip morphology

Development of Composite Textile Structures for Wound Dressing Applications

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Journal of Donghua University(English Edition) 2013年第5期30卷 447-450页

作者： ANAND Subhash UZUN Muhammet SHAH tahir RAJENDRAN Subbiyan Institute for Materials Research and Innovation The University of Bolton Department of Textile Education Marmara University

The main objective of this research work was the development of novel and responsive nonwoven composite structures containing gelling materials for wound management. The development of novel all inclusive collagen booster(CB) therapeutic nonwoven wound dressings was mainly focused on. It provides essential functional properties such as high absorption,vertical and lateral wicking,and antibacterial and acidic pH properties. The developed composite wound dressing consisted of carboxymethylcellulose(CMC) fibre and also it was reinforced with polylactic acid( PLA) fibre. The produced composite wound dressings were treated with two different CBs at 4% by using the spray method. The details of the CBs have not been disclosed in this paper due to the Intellectual Property Rights( IPR) issues. The important benefit of using CB treatment is that it allows the maintenance of an acidic pH environment at the wound area. It is well known that acidic pH reduces the wound healing time and enhances the wound healing process. Furthermore,one of the CBs not only promotes the proliferation of the epithelial cells in wounds but also can provide antibacterial action. The PLA fibre reinforced CMC composite dressing has enhanced wicking properties which help to minimise the pooling of exudate on the wound bed and as a result maceration is prevented. The CBs treated dressings maintain the wound bed in an acidic pH condition which also improves the wound healing process. In addition to the above-mentioned properties,the CB treatment imparts antimicrobial activity against Gram-positive and Gram-negative bacteria,thus resulting in the reduction in the propensity for wound infection. Ultimately,the research has proved that the 4% CB treatment enhances the antimicrobial activity and the acidic pH characteristics of the developed CMC /PLA composite wound dressings.

关键词： nonwoven composite textile structure wound dressing carboxymethylcellulose(CMC) polylactic acid(PLA)

Energy Theft Detection in Smart Grids:Taxonomy,Comparative Analysis,Challenges,and Future Research Directions

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IEEE/CAA Journal of Automatica Sinica 2022年第4期9卷 578-600页

作者： Mohsin Ahmed Abid Khan Mansoor Ahmed Mouzna tahir Gwanggil Jeon Giancarlo Fortino Francesco Piccialli the Department of Computer Science COMSATS University Islamabad the Department of Computer Science School of ComputingEngineering and Digital TechnologiesTeesside University the Innovative Value Institute Maynooth University the Department of Computer Science Bahria University the School of Electronic Engineering Xidian University the Department of Embedded Systems Engineering Incheon National University IEEE the Department of Informatics ModelingElectronics and SystemsUniversity of Calabria the Department of Mathematics and Applications“R.Caccioppoli” University of Naples FedericoⅡ

Electricity theft is one of the major issues in developing countries which is affecting their economy *** with the introduction of emerging technologies,this issue became more *** many new energy theft detection(ETD)techniques have been proposed by utilising different data mining(DM)techniques,state&network(S&N)based techniques,and game theory(GT)***,a detailed survey is presented where many state-of-the-art ETD techniques are studied and analysed for their strengths and *** levels of taxonomy are presented to classify state-of-the-art ETD *** types and ways of energy theft and their consequences are studied and summarised and different parameters to benchmark the performance of proposed techniques are extracted from *** challenges of different ETD techniques and their mitigation are suggested for future *** is observed that the literature on ETD lacks knowledge management techniques that can be more effective,not only for ETD but also for theft *** can help in the prevention of energy theft,in the future,as well as for ETD.

关键词： Challenges comparative analysis energy theft detection future research directions smart grid taxonomy

Re-analysis of temperature dependent neutron capture rates and stellarβ-decay rates of^(95-98)Mo

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Chinese Physics C 2024年第9期48卷 142-149页

作者： Abdul Kabir Jameel-Un Nabi Muhammad tahir Abdul Muneem Zain Ul Abideen Space and Astrophysics Research lab National Centre of GIS and Space ApplicationsDepartment of Space ScienceInstitute of Space TechnologyIslamabad 44000Pakistan University of Wah Quaid AvenueWah Cantt 47040PunjabPakistan Faculty of Engineering Sciences GIK Institute of Engineering Sciences and TechnologyTopi 23640Khyber PakhtunkhwaPakistan

The neutron capture rates and temperature dependent stellar beta decay rates of Mo isotopes are investigated within the framework of the statistical code TALYS v1.96 and the proton neutron quasi particle random phase approximation(pn-QRPA)*** Maxwellian average cross-section(MACS)and neutron capture rates for the^(95-98)Mo(n,γ)^(96-99)Mo radiative capture process are analyzed within the framework of the statistical code TALYS v1.96 based on the phenomenological nuclear level density model and gamma strength *** present model-based computations for the MACS are comparable to the existing measured *** sensitivity of stellar weak interaction rates to various densities and temperatures is investigated within the framework of the pn-QRPA *** attention is paid to the impact of thermally filled excited states in the decaying nuclei(^(95-98)Mo)on electron emission and positron capture ***,we compare the neutron capture rates and stellar beta decay *** is found that neutron capture rates are higher than stellar beta decay rates at both lower and higher temperatures.

关键词： cross-section TALYS nuclear level density decay rates capture rates

Phase analysis of AlFe2B2 by synchrotron X-ray diffraction,magnetic and M?ssbauer studies

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Progress in Natural Science:Materials International 2017年第2期27卷 251-256页

作者： tahir Ali M.N.Khan E.Ahmed Asad Ali Physics Division Pakistan Institute of Nuclear Science and technology Department of Physics Abdul Wali Khan University PINSAT Preston University

The structural and magnetic properties of essentially phase pure AlFe2B2prepared by arc melting were compared with a sample containing impurities. Analysis was carried out by means of synchrotron X-ray diffraction, magnetic measurements and M?ssbauer spectroscopy. The analysis of synchrotron X-ray diffraction data confirmed the orthorhombic structure of space group Cmmm for AlFe2B2with Al13Fe4as main impurity phase. The magnetic measurements revealed an unsaturated ferromagnetic state in AlFe2B2with a transition temperature（Tc） of 286 K. Isothermal magnetization measurment at 5 K gave a saturation magnetization of 0.7 μB per Fe atom while Arrott plots establish the second order nature of ferromagnetic transition. The thermal evolution of M?ssbauer spectra confirmed the ferromagnetic nature of this material revealing an hyperfine field of 73 kOe and an isomer shift of 0.46 mm/s at 100 K. The M?ssbauer spectra of a phase pure sample was compared with the one containing impurity phases. It is suggested that the low temperature paramagnetic contribution in M?ssbauer spectra of phase pure material may have its origin in some intrinsic phenomena arising from defects or inhomogeneities in crystal structure.

关键词： AlFe2B2 Synchrotron X-ray diffraction Ferromagnetism Mossbauer effect spectroscopy