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A Hybrid and Lightweight Device-to-Server Authentication Technique for the Internet of Things

Computers, Materials & Continua 2024年第3期78卷 3805-3823页

作者： Shaha Al-Otaibi Rahim Khan Hashim Ali Aftab Ahmed Khan amir saeed Jehad Ali Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Science Abdul Wali Khan University MardanMardan23200Pakistan Department of Computer Science and IT UET PeshawarJalozai Campus PeshawarPeshawar24240Pakistan Department of AI Convergence Network Ajou UniversitySuwon16499South Korea

The Internet of Things(IoT)is a smart networking infrastructure of physical devices,i.e.,things,that are embedded with sensors,actuators,software,and other technologies,to connect and share data with the respective server *** IoTs are cornerstones in different application domains,the device’s authenticity,i.e.,of server(s)and ordinary devices,is the most crucial issue and must be resolved on a priority ***,various field-proven methodologies were presented to streamline the verification process of the communicating devices;however,location-aware authentication has not been reported as per our knowledge,which is a crucial metric,especially in scenarios where devices are *** paper presents a lightweight and location-aware device-to-server authentication technique where the device’s membership with the nearest server is subjected to its location information along with other ***,Media Access Control(MAC)address and Advance Encryption Scheme(AES)along with a secret shared key,i.e.,λ_(i) of 128 bits,have been utilized by Trusted Authority(TA)to generate MaskIDs,which are used instead of the original ID,for every device,i.e.,server and member,and are shared in the offline ***,TA shares a list of authentic devices,i.e.,server S_(j) and members C_(i),with every device in the IoT for the onward verification process,which is required to be executed before the initialization of the actual communication ***,every device should be located such that it lies within the coverage area of a server,and this location information is used in the authentication process.A thorough analytical analysis was carried out to check the susceptibility of the proposed and existing authentication approaches against well-known intruder attacks,i.e.,man-in-the-middle,masquerading,device,and server impersonations,etc.,especially in the IoT ***,proposed authentication and existing state-of-the-art approaches have been s

关键词： Internet of things authenticity security location communication

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On the higher-order thermal vibrations of FG saturated porous cylindrical micro-shells integrated with nanocomposite skins in viscoelastic medium

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Defence Technology（防务技术） 2022年第8期18卷 1416-1434页

作者： Zeinab Soleimani-Javid Ehsan Arshid saeed amir Mahdi Bodaghi Department of Solid Mechanics Faculty of Mechanical EngineeringUniversity of KashanKashanIran Department of Engineering School of Science and TechnologyNottingham Trent UniversityNottinghamNG118NSUK

Since the multi-layered structures are widely used nowadays, and due to interesting applications of cylindrical shells, this study is dedicated to analyzing free vibrational behaviors of functionally graded saturated porous micro cylindrical shells with two nanocomposite skins. Based on Biot's assumptions, constitutive relations for the core are presented and effective properties of the skins are determined via the rule of mixture. A sinusoidal theory is used to capture the shear deformation effects, and to account for the scale effects, the modified couple stress theory is employed which suggests a material length-scale parameter for predicting the results in small-dimension. With the aid of extended form of Hamilton's principle for dynamic systems, differential equations of motion are extracted. Fourier series functions are used to obtain natural frequencies and after validating them, a set of parametric studies are carried out. The results show the significant effects of porosity and Skempton coefficient, pores placement patterns, CNTs addition and distribution patterns, temperature variations, material length-scale parameter and viscoelastic medium on the natural frequencies of the microstructure. The outcomes of this work could be used to design and manufacture more reliable micro cylindrical structures in thermo-dynamical environments.

关键词： Vibration analysis Cylindrical shells Saturate porous materials Nanocomposite materials Carbon nanotubes Sinusoidal shear deformation theory Viscoelastic medium

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A novel approach for constructing a 3D model based on registering a mono image on a 3D model, applicable in Digital Earth

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International Journal of Digital Earth 2012年第2期5卷 91-105页

作者： amir saeed Homainejad Independent Research Group on Geospatial TehranIran

The effect of Digital Earth on our life is *** and updating Geospatial data in Digital Earth is also *** paper presents the application of a new approach of image registration in Digital *** approach was developed based on registering a mono photograph on a master 3D *** result is a 3D vector model,which can be broadly applied in visualisation,mapping,geographic information system(GIS),planning,change detection,as well as Digital *** approach does not require parameters of correction for *** accuracy of the output depends on the accuracy of the master *** approach is very versatile and able to register any image on the digital elevation model,digital surface model and topographic 3D model.

关键词： Digital Earth image registration 3D model

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Distributed Optimal Control for Traffic Networks with Fog Computing

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China Communications 2019年第10期16卷 202-213页

作者： Yijie Wang Lei Wang saeed amir Qing-Guo Wang Department of Operations Research at the University of Texas at Austin AustinTexas76019 USA School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191 China Faculty of Engineering and the Built Environment Institute for Intelligent SystemsUniversity of JohannesburgJohannesburg 2006South Africa

This paper presents a distributed optimization strategy for large-scale traffic network based on fog computing. Different from the traditional cloud-based centralized optimization strategy, the fog-based distributed optimization strategy distributes its computing tasks to individual sub-processors, thus significantly reducing computation time. A traffic model is built and a series of communication rules between subsystems are set to ensure that the entire transportation network can be globally optimized while the subsystem is achieving its local optimization. Finally, this paper numerically simulates the operation of the traffic network by mixed-Integer programming, also, compares the advantages and disadvantages of the two optimization strategies.

关键词： fog computing traffic network distributed optimization distributed control

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Coupling of RANS and BEM Solvers for Simulation of Propeller Behind the Hull in Full Appended Model

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China Ocean Engineering 2024年第3期38卷 424-438页

作者： saeed NAJAFI Mehdi POURMOSTAFA LIU Peng-fei Iranian National Institute for Oceanography and Atmospheric Science(INIOAS) Tehran 14155-4781Iran Department of Maritime Engineering Amir Kabir University of TechnologyTehran 15875-4413Iran Marine Offshore and Subsea TechnologySchool of EngineeringNewcastle UniversityNewcastle upon TyneNE17RUUK

To design a propeller for ship power plant,the interaction between ship hull and propeller must be taken into *** main concern is to apply the wake effect of ship stern on the propeller *** this paper,a coupled BEM(Boundary Element Method)/RANS(Renolds-Averaged Navier−Stokes)solver is used to simulate propeller behind the hull in the self-propulsion *** motivation of this work is to develop a practical tool to design marine propulsion system without suffering long computational *** unsteady boundary element method which is also known as panel method is chosen to estimate the propeller *** wakes are treated using a time marching wake alignment ***,a RANS code coupled with VoF equation is developed to consider the ship motions and wake field effects in the problem.A coupling algorithm is developed to interchange ship wake field to the potential flow solver and propeller thrust to the RANS *** on the difference between hull resistance and the propeller thrust,a PI controller is developed to compute the propeller RPM in every time *** of the solver is carried out using the towing tank test report of a 50 m oceanography research *** factor and trust deduction coefficient are estimated ***,the wake rollup pattern of the propeller in open water is compared with the propeller in real wake field.

关键词： RANS BEM coupled method ship propeller self-propulsion wake sheet pattern

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Isoimperatorin alleviates acetic acid-induced colitis in rats

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Asian Pacific Journal of Tropical Biomedicine 2024年第4期14卷 147-153页

作者： Saied Goodarzi amir Hossein Abdolghaffari Behnaz Najafi Mostafa Pirali Hamedani saeed Tavakoli Mahshad Marvi Maryam Baeeri Narguess Yassa Abbas Hadjiakhoondi Mohammad Abdollahi Zahra Tofighi Medicinal Plants Research Center Faculty of PharmacyTehran University of Medical SciencesTehranIran Department of Toxicology and Pharmacology Faculty of PharmacyTehran Medical SciencesIslamic Azad UniversityTehranIran Department of Pharmacognosy Faculty of PharmacyTehran University of Medical SciencesTehranIran Medicinal Plants Research Center Institute of Medicinal PlantsACECRKarajIran International Campus School of Pharmacy Tehran University of Medical SciencesTehranIran Toxicology and Diseases group The Pharmaceutical Sciences Research CenterTehran University of Medical SciencesTehranIran Department of Toxicology and Pharmacology Faculty of PharmacyTehran University of Medical SciencesTehranIran

Objective:To investigate the effect of isoimperatorin on histopathological and biochemical changes in acetic acid-induced colitis ***:Colitis was induced by intracolonic administration of acetic acid solution(4%v/v)in *** were divided into six groups including the sham group,the negative control group,the dexamethasone-treated group,and the groups treated with isoimperatorin(0.1,1,and 10 mg/kg/d by gavage).The treatments were administered for three days and then colonic status was assessed by macroscopic,histopathological,and biochemical ***:Isoimperatorin significantly alleviated colonic damage in a dose-dependent manner and improved histological changes in rats with acetic acid-induced *** also significantly reduced myeloperoxidase,TNF-α,IL-1β,and malodialdehyde ***:Isoimperatorin alleviates acetic acid-induced colitis in rats and may be a potential therapeutic agent for the treatment of colitis.

关键词： Isoimperatorin Inflammatory bowel disease Acetic acid Colitis TNF-α IL-1β

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On the higher-order thermal vibrations of FG saturated porous cylindrical micro-shells integrated with nanocomposite skins in viscoelastic medium

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Defence Technology 2022年第8期

作者： Zeinab Soleimani-Javid Ehsan Arshid saeed amir Mahdi Bodaghi

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Courtyard design impact on indoor thermal comfort and utility costs for residential households: Comparative analysis and deep-learning predictive model

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Frontiers of Architectural Research 2022年第5期11卷 963-980页

作者： amir Tabadkani Sara Aghasizadeh saeed Banihashemi Aso Hajirasouli School of Architecture and Built Environment Deakin UniversityGeelongAustralia Department of Architectural Technology Faculty of Architecture and UrbanismUniversity of ArtTehranIran Design&Built Environment School University of CanberraCanberraAustralia School of Architecture and Built Environment Queensland University of TechnologyQueenslandAustralia

A courtyard is an architectural design element which is often known as microclimate modifiers and is responsible to increase the indoor occupant comfort in traditional architecture. The aim of this study is to conduct a parametric evaluation of courtyard design variants in a residential building of different climates with a focus on indoor thermal comfort and utility costs. A brute-force approach is applied to generate a wide range of design alternatives and the simulation workflow is conducted by Grasshopper together with the environmental plugins Ladybug and Honeybee. The main study objective is the evaluation of the occupant thermal comfort in an air-conditioned residential building, energy load, and cost analysis, derived from different design variables including courtyard geometry, window-to-wall ratio, envelope materials, heating, and cooling set-point dead-bands, and building geographical location. Furthermore, a Deep Learning model is developed using the inputs and outputs of the simulation and analysis to transform the outcomes into the algorithmic and tangible environment feasible for predictive applications. The results suggest that regarding the thermal loads, costs, and indoor thermal comfort index (PMV), there are high correlations between the outdoor weather variation and dead-band ranges, while in extreme climates such as Singapore, courtyard spaces might not be efficient enough as expected. Finally, the highly accurate deep learning model is also developed, delivering superior predictive capabilities for the thermal comfort and utility costs of the courtyard designs.

关键词： Parametric design Courtyard microclimate Occupant comfort Building energy consumption Deep learning neural network Residential

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Combined medial patellofemoral ligament and medial patellotibial ligament reconstruction in recurrent patellar instability:A systematic review and meta-analysis

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World Journal of Clinical Cases 2023年第19期11卷 4625-4634页

作者： Ahmad Abbaszadeh Mohsen saeedi amir Human Hoveidaei Haleh Dadgostar saeed Razi Mohammad Razi Department of Orthopedic Emam Khomeini Teaching HospitalAhvaz Jundishapur University of Medical SciencesAhvaz ***Iran Sports Medicine Research Center Tehran University of Medical SciencesTehran 14395-578Iran Department of Sports and Exercise Medicine School of MedicineRasool Akram Medical ComplexIran University of Medical SciencesTehran ***Iran Bone and Joint Reconstruction Research Center Department of OrthopedicsSchool of MedicineIran University of Medical SciencesTehran ***Iran Department of Orthopedic Surgery Rasoul Akram HospitalIran University of Medical SciencesTehran ***Iran

BACKGROUND The medial patellofemoral ligament(MPFL),along with the medial patellotibial ligament(MPTL)and medial patellomeniscal ligament,aid in the stabilization of the patellofemoral *** the MPFL is the primary stabilizer and the MPTL is a secondary limiter,this ligament is critical in maintaining joint *** have been few studies on the combined MPFL and MPTL reconstruction and its *** To look into the outcomes of combined MPFL and MPTL reconstruction in frequent patellar *** By May 8,2022,four electronic databases were searched:Medline(PubMed),Scopus,Web of Science,and Google *** keywords such as"patellar instability,""patellar dislocation,""MPFL,""medial patellofemoral ligament,""MPTL,"and"medial patellotibial ligament"were co-searched to increase the sensitivity of the *** The pooled effects of combined MPFL and MPTL reconstruction for Kujala score(12-mo followup)and Kujala score(24-mo follow-up)were positive and incremental,according to the findings of this *** mean difference between the Cincinnati scores was also positive,but not statistically *** combination of the two surgeries reduces *** to cumulative meta-analysis,the trend of pain reduction in various studies is declining over *** The combined MPFL and MPTL reconstruction has good clinical results in knee function and,in addition to providing good control to maintain patellofemoral joint balance,the patient's pain level decreases over time,making it a valid surgical method for patella stabilization.

关键词： Medial patellofemoral ligament reconstruction Medial patellotibial ligament patella dislocation Patella instability

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Thermal comfort analysis of earth-sheltered buildings: The case of meymand village, Iran

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Frontiers of Architectural Research 2022年第6期11卷 1214-1238页

作者： amirreza Khaksar amir Tabadkani Seyed Majid Mofidi Shemirani Aso Hajirasouli saeed Banihashemi Shady Attia Department of Architecture Faculty of Art and ArchitectureIslamic Azad UniversityMashhadIran School of Architecture and Built Environment Deakin UniversityGeelong Waterfront CampusAustralia Iran University of Science and Technology School of Architecture and Urban PlanningTehranIran School of Architecture and Built Environment Queensland University of TechnologyAustralia Design&Built Environment School University of CanberraAustralia Sustainable Building Design Lab Dept.UEEFaculty of Applied ScienceUniversity of LiegeLiegeBelgium

Vernacular buildings are known for their localized passive settings to provide comfortable indoor environment without air conditioning *** alternative is the consistent ground temperature over the year that earth-sheltered envelopes take the benefit;however,ensuring annual indoor comfort might be ***,this research monitors the indoor thermal indicators of 22 earth-sheltered buildings in Meymand,Iran with a warmdry ***,the observations are used to validate the simulation results through two outdoor and indoor environmental parameters,air temperature and relative humidity during the hottest period of the *** indicated that the main thermal comfort differences among case studies were mainly due to their architectural layouts where the associated variables including length,width,height,orientation,window-to-wall ratio,and shading depth were optimized through a linkage between Ladybug-tools and Genetic Algorithm(GA)concerning adaptive thermal comfort model definition and could enhance the annual thermal comfort by 31%.

关键词： Earth-sheltered buildings Adaptive thermal comfort Building simulation Optimization Field measurement Architectural context

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