检索结果-南通市图书馆

维普期刊数据库博看期刊

A Decision-Based Hybrid Proxy Mobile IPv6 Scheme for Better Resources Utilization

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第12期73卷 5151-5167页

作者： habib ullah Khan Anwar Hussain Shah Nazir Department of Accounting and Information Systems College of Business and Economics Qatar UniversityDohaQatar Department of Computer Science University of SwabiAnbarKPPakistan

Seamless mobility is always one of the major requirements of modern-day *** a heterogeneous and massive IoT environment,efficient network-based mobility protocol such as proxy mobile IPv6(PMIPv6),is potentially a good candidate for efficient mobility as well as resource utilization *** extensions are devised for performance in the research ***,a multi-criterion decision-based resourceefficient PMIPv6 extension is required to achieve efficiency when network resources are *** this research,a multi-criterion decision-based PMIPv6 scheme is devised that provides better performance when the Local Mobility Anchor(LMA)or Mobile Access Gateway(MAG)is *** objective is achieved by monitoring the load status of MAG or LMA and based on their status,the proposed scheme adapts itself to provide seamless mobility in addition to optimal *** proposed scheme is compared with the existing LMA and MAG-based mobility management protocol *** on the analysis of the comparison,the obtained results prove that providing a decision-based PMIPv6 scheme is better for service continuity as well as optimal performance in the context of required buffering,handover efficiency,and necessary signaling cost.

关键词： Proxy mobile IPv6 LMA MAG load balancing location-based PMIPv6

Fatty Acid Composition of Tobacco Seed Oil and Synthesis of Alkyd Resin

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2007年第5期25卷 705-708页

作者： MUKHTAR, Azam ullah, habib MUKHTAR, Hamid Department of Chemistry University of Education Lahore Institute of Chemistry University of the Punjab Lahore 54600 Pakistan Institute of Industrial Biotechnology G C. University Lahore 54000 Pakistan

The fatty acid composition of tobacco seed oil revealed that the oil is rich in unsaturated fatty acids, having linoleic acid （71.63%）, oleic acid （13.46%） and palmitic acid （8.72%） as the most abundant unsaturated and saturated fatty acids respectively. So the tobacco oil was characterized as semi-drying type on the basis of fatty acid composition. The synthesis of alkyd resin was carried out by alcoholysis or monoglyceride process using an alkali refined tobacco seed oil, pentaerythritol, cis-1,2,3,6-tetrahydrophthalic anhydride along with lithium hydroxide as catalyst. The alkyd resin so prepared was found to be bright and of low color with high gloss. The drying and hardness properties and adhesion of the tobacco seed oil derived alkyd resin were also found a bit superior to those of other alkyd resins of the same oil length. In addition, the water and acid resistance of the said alkyd was also found comparable to the other alkyds.

关键词： tobacco oil alkyd fatty acid linoleic acid gloss and adhesion

Pashto Characters Recognition Using Multi-Class Enabled Support Vector Machine

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2021年第6期67卷 2831-2844页

作者： Sulaiman Khan Shah Nazir habib ullah Khan Anwar Hussain Department of Computer Science University of SwabiSwabiPakistan Department of Accounting and Information Systems College of Business and EconomicsQatar UniversityDohaQatar

During the last two decades signicant work has been reported in the eld of cursive language’s recognition especially,in the Arabic,the Urdu and the Persian *** unavailability of such work in the Pashto language is because of:the absence of a standard database and of signicant research work that ultimately acts as a big barrier for the research *** slight change in the Pashto characters’shape is an additional challenge for *** paper presents an efcient OCR system for the handwritten Pashto characters based on multi-class enabled support vector machine using manifold feature extraction *** feature extraction techniques include,tools such as zoning feature extractor,discrete cosine transform,discrete wavelet transform,and Gabor lters and histogram of oriented gradients.A hybrid feature map is developed by combining the manifold feature *** research work is performed by developing a medium-sized dataset of handwritten Pashto characters that encapsulate 200 handwritten samples for each 44 characters in the Pashto *** results are generated for the proposed model based on a manifold and hybrid feature *** overall accuracy rates of 63.30%,65.13%,68.55%,68.28%,67.02%and 83%are generated based on a zoning technique,HoGs,Gabor lter,DCT,DWT and hybrid feature maps *** of the proposed model is also tested by comparing its results with a convolution neural network *** convolution neural network-based model generated an accuracy rate of 81.02%smaller than the multi-class support vector *** highest accuracy rate of 83%for the multi-class SVM model based on a hybrid feature map reects the applicability of the proposed model.

关键词： Pashto multi-class support vector machine handwritten characters database zoning and histogram of oriented gradients

Serious games in science education:a systematic literature review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virtual Reality & Intelligent Hardware 2022年第3期4卷 189-209页

作者： Mohib ullah Sareer Ul AMIN Muhammad MUNSIF Muhammad Mudassar YAMIN Utkurbek SAFAEV habib KHAN Salman KHAN habib ullah Department of Computer Science Norwegian University of Science and Technology2815 GjøvikNorway Department of Computer Science Islamia College University Peshawar25000 Pakistan Department of Information Security and Communication Norwegian University of Science and Technology2815 GjøvikNorway Faculty of Science and Technology Norwegian University of Life Sciences1430ÅsNorway

Teaching science through computer games,simulations,and artificial intelligence(AI)is an increasingly active research *** this end,we conducted a systematic literature review on serious games for science education to reveal research trends and *** discussed the role of virtual reality(VR),AI,and augmented reality(AR)games in teaching science subjects like ***,we covered the research spanning between 2011 and 2021,investigated country-wise concentration and most common evaluation methods,and discussed the positive and negative aspects of serious games in science education in particular and attitudes towards the use of serious games in education in general.

关键词： Serious games Simulations,Artificial intelligence,Virtual reality,Augmented reality Games in education

维普期刊数据库

Smart Object Detection and Home Appliances Control System in Smart Cities

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2021年第4期67卷 895-915页

作者： Sulaiman Khan Shah Nazir habib ullah Khan Department of Computer Science University of SwabiKPPakistan Department of Accounting and Information Systems College of Business and EconomicsQatar UniversityDohaQatar

During the last decade the emergence of Internet of Things(IoT)based applications inspired the world by providing state of the art solutions to many common *** traffic management systems to urban cities planning and development,IoT based home monitoring systems,and many other smart *** of these facilities,most of these IoT based solutions are data driven and results in small accuracy values for smaller *** order to address this problem,this paper presents deep learning based hybrid approach for the development of an IoT-based intelligent home security and appliance control system in the smart *** hybrid model consists of;convolution neural network and binary long short term model for the object detection to ensure safety of the homes while IoT based hardware components like;Raspberry Pi,Amazon Web services cloud,and GSM modems for remotely accessing and controlling of the home *** android application is developed and deployed on Amazon Web Services(AWS)cloud for the remote monitoring of home appliances.A GSM device and Message queuing telemetry transport(MQTT)are integrated for communicating with the connected IoT devices to ensure the online and offline *** object detection purposes a camera is connected to Raspberry Pi using the proposed hybrid neural network *** applicability of the proposed model is tested by calculating results for the object at varying distance from the camera and for different intensity levels of the *** many applications the proposed model promises for providing optimum results for the small amount of data and results in high recognition rates of 95.34%compared to the conventional recognition model(k nearest neighbours)recognition rate of 76%.

关键词： Hybrid deep learning model IoT smart cities home appliances control system and Amazon web services

Plasmon Assisted Highly Efficient Visible Light Catalytic CO_(2) Reduction Over the Noble Metal Decorated Sr-Incorporated g-C_(3)N_(4)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2021年第12期13卷 416-433页

作者： Muhammad Humayun habib ullah Lang Shu Xiang Ao Asif Ali Tahir Chungdong Wang Wei Luo School of Optical and Electronic Information Wuhan National Laboratory for OptoelectronicsEngineering Research Center for Functional Ceramics of the Ministry of EducationHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Environment and Sustainability Institute University of ExeterCornwallPenryn TR109FEUK

The photocatalytic performance of g-C_(3)N_(4) for CO_(2) conversion is still inadequate by several shortfalls including the instability,insu cient solar light absorption and rapid charge carrier's recombination rate. To solve these problems,herein,noble metals(Pt and Au)decorated Sr-incorporated g-C_(3)N_(4) photocatalysts are fabricated via the simple calcination and photo-deposition methods. The Sr-incorporation remarkably reduced the g-C_(3)N_(4) band gap from 2.7 to 2.54 eV,as evidenced by the UV–visible absorption spectra and the density functional theory results. The CO_(2) conversion performance of the catalysts was evaluated under visible light irradiation. The Pt/0.15 Sr-CN sample produced 48.55 and 74.54 μmol h-1 g-1 of CH_(4) and CO,*** amounts are far greater than that produced by the Au/0.15 Sr-CN,0.15 Sr-CN,and CN samples. A high quantum e ciency of 2.92% is predicted for the Pt/0.15 Sr-CN sample. Further,the stability of the photocatalyst is confirmed via the photocatalytic recyclable test. The improved CO_(2) conversion performance of the catalyst is accredited to the promoted light absorption and remarkably enhanced charge separation via the Sr-incorporated mid gap states and the localized surface plasmon resonance e ect induced by noble metal *** work will provide a new approach for promoting the catalytic e ciency of g-C_(3)N_(4) for e cient solar fuel production.

关键词： g-C_(3)N_(4) Sr-incorporation Noble metal deposition Density functional theory Energy applications

维普期刊数据库

Computational modeling and analysis for the effect of magnetic field on rotating stretched disk flow with heat transfer

在线全文

学校读者我要写书评

暂无评论

Propulsion and Power Research 2021年第1期10卷 48-57页

作者： Salman Ahmad T.Hayat A.Alsaedi habib ullah Faisal Shah Department of Mathematics Quaid-I-Azam University45320Islamabad44000Pakistan Nonlinear Analysis and Applied Mathematics(NAAM)Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz UniversityP.O.Box 80257Jeddah21589Saudi Arabia

Time-dependent viscous fluid flow due to a stretchable rotating disk is *** field is applied in vertical direction to the *** equation is assisted with Joule heating *** system of PDE's is transformed to dimensionless form by suitable *** of the numerical techniques known as finite difference scheme is adopted to tackle the given dimensionless partial differential *** method results in a system of simple algebraic *** unknown function is analyzed inside domain of *** this technique of solution,a system is subdivided into many smaller parts called finite *** obtained simpler algebraic equations are then assembled to form a system of equations which governs the original *** method is used to get approximate solution by reducing the error *** of pertinent variables on surface drag force,temperature,velocity and heat transfer rate are shown *** obtained outcomes guarantee that velocity decreases for Hartmann number while it enhances with Reynolds *** increases for higher Prandtl,Eckert and Hartmann *** friction boosts for larger values of Hartmann *** number enhances with Hartmann number.

关键词： Finite difference scheme Magnetic field System of partial differential equations Joule heating Rotating stretchable disk

Perovskite-type lanthanum ferrite based photocatalysts:Preparation,properties,and applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第3期31卷 314-338,I0009页

作者： Muhammad Humayun habib ullah Muhammad Usman Aziz habibi-Yangjeh Asif Ali Tahir Chundong Wang Wei Luo School of Optical and Electronic Information Wuhan National Laboratory for OptoelectronicsEngineering Research Center for Functional Ceramics of the Ministry of EducationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Environment and Sustainability Institute University of ExeterPenryn TR109FECornwallUnited Kingdom Center of Research Excellence in Nanotechnology King Fahd University of Petroleum and Minerals(KFUPM)Dhahran 31261Saudi Arabia Department of Chemistry Faculty of ScienceUniversity of Mohaghegh ArdabiliArdabili P.O.Box 179ArdabilIran

Clean energy and a sustainable environment are grand challenges that the world is facing which can be addressed by converting solar energy into transportable and storable fuels(chemical fuel).The main scientific and technological challenges for efficient solar energy conversion,energy storage,and environmental applications are the stability,durability,and performance of low-cost functional *** different nanomaterials,perovskite type LaFeO_(3)has been extensively investigated as a photocatalyst due to its abundance,high stability,compositional and structural fexibility,high electrocatalytic activity,efficient sunlight absorption,and tunable band gap and band ***,it is urgent to write a comprehensive review to highlight the trend,challenges,and prospects of LaFeO_(3)in the field of photocatalytic solar energy conversion and environment *** critical review summarizes the history and basic principles of ***,it reviews in detail the LaFeO_(3),applications,shortcomings,and activity enhancement strategies including the design of nanostructures,elemental doping,and heterojunctions construction such as Type-I,Type-II,Z-Type,and uncommon ***,the optical and electronic properties,charge carriers separation,electron transport phenomenon and alignment of the band gaps in LaFeO_(3)-based heterostructures are comprehensively discussed.

关键词： Perovskite-type LaFeO_(3) Solar fuel Photocatalysis Doping Heterostructures

维普期刊数据库

LSTDA: Link Stability and Transmission Delay Aware Routing Mechanism for Flying Ad-Hoc Network (FANET)

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第10期77卷 963-981页

作者： Farman Ali Khalid Zaman Babar Shah Tariq Hussain habib ullah Altaf Hussain Daehan Kwak Department of Computer Science and Engineering Sungkyunkwan UniversitySeoul03063South Korea Information Engineering School Chang’an UniversityXi’an710061China College of Technological Innovation Zayed UniversityDubai19282United Arab Emirates School of Computer Science and Technology Zhejiang Gongshang UniversityHangzhou310018China Institute of Computer Science and IT The University of Agriculture PeshawarPeshawer25120Pakistan Department of Computer Science and Technology Kean UniversityUnionNew Jersey07083USA

The paper presents a new protocol called Link Stability and Transmission Delay Aware(LSTDA)for Flying Adhoc Network(FANET)with a focus on network corridors(NC).FANET consists of Unmanned Aerial Vehicles(UAVs)that face challenges in avoiding transmission loss and delay while ensuring stable *** proposed protocol introduces a novel link stability with network corridors priority node selection to check and ensure fair communication in the entire *** protocol uses a Red-Black(R-B)tree to achieve maximum channel utilization and an advanced relay *** paper evaluates LSTDA in terms of End-to-End Delay(E2ED),Packet Delivery Ratio(PDR),Network Lifetime(NLT),and Transmission Loss(TL),and compares it with existing methods such as Link Stability Estimation-based Routing(LEPR),Distributed Priority Tree-based Routing(DPTR),and Delay and Link Stability Aware(DLSA)using MATLAB *** results show that LSTDA outperforms the other protocols,with lower average delay,higher average PDR,longer average NLT,and comparable average TL.

关键词： LSTDA routing protocol Flying Ad-hoc Network link stability unmanned aerial vehicles maxim priority channel