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Blockchain-Based Decentralized Authentication Model for ioT-Based E-Learning and Educational Environments

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Computers, Materials & Continua 2023年第5期75卷 3133-3158页

作者： Osama A.Khashan Sultan Alamri Waleed alomoush Mutasem K.Alsmadi Samer Atawneh Usama Mir Research and innovation Centers Rabdan AcademyP.O.Box 114646Abu DhabiUnited Arab Emirates College of Computing and informatics Saudi Electronic UniversityRiyadh13316Saudi Arabia School of information Technology Skyline University CollegeP.O.Box 1797SharjahUnited Arab Emirates Department of MiS College of Applied Studies and Community ServicesImam Abdulrahman Bin Faisal UniversityP.O.Box 1982DammamSaudi Arabia Department of Computer Science University of WindsorWindsorN9J3Y1Canada

in recent times,technology has advanced significantly and is currently being integrated into educational environments to facilitate distance learning and interaction between *** the internet of Things(ioT)into education can facilitate the teaching and learning process and expand the context in which students ***,learning data is very sensitive and must be protected when transmitted over the network or stored in data ***,the identity and the authenticity of interacting students,instructors,and staff need to be verified to mitigate the impact of ***,most of the current security and authentication schemes are centralized,relying on trusted third-party cloud servers,to facilitate continuous secure *** addition,most of these schemes are resourceintensive;thus,security and efficiency issues arise when heterogeneous and resource-limited ioT devices are being *** this paper,we propose a blockchain-based architecture that accurately identifies and authenticates learners and their ioT devices in a decentralized manner and prevents the unauthorized modification of stored learning records in a distributed university *** allows students and instructors to easily migrate to and join multiple universities within the network using their identity without the need for user *** proposed architecture was tested using a simulation tool,and measured to evaluate its *** simulation results demonstrate the ability of the proposed architecture to significantly increase the throughput of learning transactions(40%),reduce the communication overhead and response time(26%),improve authentication efficiency(27%),and reduce the ioT power consumption(35%)compared to the centralized authentication *** addition,the security analysis proves the effectiveness of the proposed architecture in resisting various attacks and ensuring the security requirements of learning data in the unive

关键词： Blockchain decentralized authentication internet of Things(ioT) E-learning ioT security

Automatic Data Clustering Based Mean Best Artificial Bee Colony Algorithm

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Computers, Materials & Continua 2021年第8期68卷 1575-1593页

作者： Ayat Alrosan Waleed alomoush Mohammed Alswaitti Khalid Alissa Shahnorbanun Sahran Sharif Naser Makhadmeh Kamal Alieyan Deanship of information and Communication Technology Imam Abdulrahman bin Faisal UniversityDammamSaudi Arabia Computer Department Imam Abdulrahman bin Faisal UniversityDammamSaudi Arabia School of Electrical and Computer Engineering Department of Information and Communication TechnologyXiamen University MalaysiaSepang43900Malaysia Department of Computer Science College of Computer Science and Information TechnologyImam Abdulrahman bin Faisal UniversityDammamSaudi Arabia Center for Artificial intelligence Technology(CAiT) Faculty of Information Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiMalaysia School of Computer Sciences Universiti Sains Malaysia11800PenangMalaysia Faculty of Computer Sciences and informatics Amman Arab UniversityAmmanJordan

Fuzzy C-means(FCM)is a clustering method that falls under unsupervised machine *** main issues plaguing this clustering algorithm are the number of the unknown clusters within a particular dataset and initialization sensitivity of cluster *** Bee Colony(ABC)is a type of swarm algorithm that strives to improve the members’solution quality as an iterative process with the utilization of particular kinds of ***,ABC has some weaknesses,such as balancing exploration and *** improve the exploration process within the ABC algorithm,the mean artificial bee colony(MeanABC)by its modified search equation that depends on solutions of mean previous and global best is ***,to solve the main issues of FCM,Automatic clustering algorithm was proposed based on the mean artificial bee colony called(AC-MeanABC).it uses the MeanABC capability of balancing between exploration and exploitation and its capacity to explore the positive and negative directions in search space to find the best value of clusters number and centroids value.A few benchmark datasets and a set of natural images were used to evaluate the effectiveness of *** experimental findings are encouraging and indicate considerable improvements compared to other state-of-the-art approaches in the same domain.

关键词： Artificial bee colony automatic clustering natural images validity index number of clusters

Age and Gender Classification Using Backpropagation and Bagging Algorithms

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Computers, Materials & Continua 2023年第2期74卷 3045-3062页

作者： Ammar Almomani Mohammed Alweshah Waleed alomoush Mohammad Alauthman Aseel Jabai Anwar Abbass Ghufran Hamad Meral Abdalla Brij B.Gupta Research and innovation Department Skyline University CollegeP.O.Box 1797SharjahUAE iT-department-Al-Huson University College Al-Balqa Applied UniversityP.O.Box 50IrbidJordan Prince Abdullah Ben Ghazi Faculty of information and Communication Technology Al-Balqa Applied UniversityAl-SaltJordan School of information Technology Skyline University CollegeSharjah P.O.Box 1797United Arab Emirates Department of information Security Faculty of Information TechnologyUniversity of PetraAmmanJordan Department of Computer Science and information Engineering Asia UniversityTaizhongTaiwan Department of Computer Science King Abdulaziz UniversityJeddahSaudi Arabia

Voice classification is important in creating more intelligent systems that help with student exams,identifying criminals,and security *** main aim of the research is to develop a system able to predicate and classify gender,age,and ***,a newsystem calledClassifyingVoice Gender,Age,and Accent(CVGAA)is *** and bagging algorithms are designed to improve voice recognition systems that incorporate sensory voice features such as rhythm-based features used to train the device to distinguish between the two gender *** has high precision compared to other algorithms used in this problem,as the adaptive backpropagation algorithm had an accuracy of 98%and the Bagging algorithm had an accuracy of 98.10%in the gender identification *** has the best accuracy among all algorithms,with 55.39%accuracy in the voice common dataset and age classification and accent accuracy in a speech accent of 78.94%.

关键词： Classify voice gender accent age bagging algorithms back propagation algorithms Ai classifiers

Multisensory mechanisms of gait and balance in Parkinson’s disease:an integrative review

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Neural Regeneration Research 2025年第1期20卷 82-92页

作者： Stiven Roytman Rebecca Paalanen Giulia Carli Uros Marusic Prabesh Kanel Teus van Laar Nico i.Bohnen Department of Radiology University of MichiganAnn ArborMIUSA Department of Neurology University of MichiganAnn ArborMIUSA Morris K.Udall Center of Excellence for Parkinson’s Disease Research University of MichiganAnn ArborMIUSA institute for Kinesiology Research Science and Research Centre KoperKoperSlovenia Department of Health Sciences Alma Mater Europaea–ECMMariborSlovenia Parkinson’s Foundation Research Center of Excellence University of MichiganAnn ArborMIUSA Department of Neurology University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands Neurology Service and GRECC VA Ann Arbor Healthcare SystemAnn ArborMIUSA

Understanding the neural underpinning of human gait and balance is one of the most pertinent challenges for 21st-century translational neuroscience due to the profound impact that falls and mobility disturbances have on our aging *** and gait control does not happen automatically,as previously believed,but rather requires continuous involvement of central nervous *** effectively exert control over the body,the brain must integrate multiple streams of sensory information,including visual,vestibular,and somatosensory *** mechanisms which underpin the integration of these multisensory signals are the principal topic of the present *** multisensory integration theories focus on how failure of cognitive processes thought to be involved in multisensory integration leads to falls in older *** emphasis,however,has been placed on specific contributions of individual sensory modalities to multisensory integration processes and cross-modal interactions that occur between the sensory modalities in relation to gait and *** the present work,we review the contributions of somatosensory,visual,and vestibular modalities,along with their multisensory intersections to gait and balance in older adults and patients with Parkinson’s *** also review evidence of vestibular contributions to multisensory temporal binding windows,previously shown to be highly pertinent to fall risk in older ***,we relate multisensory vestibular mechanisms to potential neural substrates,both at the level of neurobiology(concerning positron emission tomography imaging)and at the level of electrophysiology(concerning electroencephalography).We hope that this integrative review,drawing influence across multiple subdisciplines of neuroscience,paves the way for novel research directions and therapeutic neuromodulatory approaches,to improve the lives of older adults and patients with neurodegenerative diseases.

关键词： aging balance encephalography functional magnetic resonance imaging gait multisensory integration Parkinson’s disease positron emission tomography somatosensory vestibular visual

Apolipoprotein A-i binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan Choi Soo-Ho Choi Keun-Young Kim Yury i.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

Prognostic impact of inflammatory and nutritional biomarkers in pancreatic cancer

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World Journal of Clinical Oncology 2025年第1期16卷 5-9页

作者： Macarena Teja María i Garrido Abrahams Ocanto Felipe Counago Department of Radiation Oncology GenesisCare-San Francisco de Asís University HospitalMadrid 28002Spain Department of Radiation Oncology GenesisCare-Vithas La Milagrosa University HospitalMadrid 28010Spain National Director GenesisCare SpainMadrid 28043Spain Department of Medicine School of MedicineHealth and SportEuropean University of MadridMadrid 28670Spain

Pancreatic cancer is usually associated with a poor *** is the main curative treatment but pancreatic operations are aggressive and new tools that help clinicians to predict surgical and prognostic outcomes are *** et al recently published a retrospective,single centre cohort study evaluating the impact of seven nutritional and inflammatory markers in pancreatic cancer surgical patients:The albumin-to-globulin ratio,prognostic nutritional index(PNi),systemic immune-inflammation index(Sii),neutrophil-to-lymphocyte ratio(NLR),platelet-to-lymphocyte ratio(PLR),nutritional risk index,and the geriatric nutritional risk index.A significant correlation was found between the PNi,Sii,NLR,and PLR and a hospital discharge of less than 15 *** a univariable analysis,PNi,Sii,NLR and PLR were significantly related to recurrence-free survival and,in a multivariable analysis PNi was associated with overall *** meta-analyses corroborate the results in terms of prognosis but individual studies are discordant on their ***,the cut-off values for these markers vary significantly between studies and there are no clinical trials comparing them to identify the most relevant *** are limitations when implementing nutritional and inflammatory biomarkers into clinical practice and further studies are needed in order to answer these questions.

关键词： inflammatory biomarkers Nutritional biomarkers Pancreatic cancer Prognosis Surgical complications

Hemogram-derived ratios as prognostic markers for major adverse cardiovascular events in patients with non-ST-segment elevation myocardial infarction

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World Journal of Methodology 2025年第2期15卷 125-136页

作者： Emir Bećirović Minela Bećirović SabinaŠegalo Amir Bećirović Semir Hadžić Kenana Ljuca Emsel Papić Lamija Ferhatbegović Malik Ejubović Amira JagodićEjubović Amila Kovčić ArminŠljivo Emir Begagić Department of intensive Care University Clinical Center TuzlaTuzla 75000Bosnia and Herzegovina Department of Nephrology University Clinical Center TuzlaTuzla 75000Bosnia and Herzegovina Department of Laboratory Technologies Faculty of Health SciencesUniversity of SarajevoSarajevo 71000Bosnia and Herzegovina Department of Endocrinology University Clinical Center TuzlaTuzla 75000Bosnia and Herzegovina School of Medicine University of TuzlaTuzla 75000Bosnia and Herzegovina Department for internal Diseases and Hemodialysis Canton Hospital ZenicaZenica 72000Bosnia and Herzegovina Department of internal Medicine Canton Hospital ZenicaZenica 72000Bosnia and Herzegovina Department of Radiotherapy University Clinical Center TuzlaTuzla 75000Bosnia and Herzegovina Department of Cardiology University Clinical Center SarajevoSarajevo 72000Bosnia and Herzegovina Department of General Medicine University of ZenicaSchool of MedicineZenica 72000Bosnia and Herzegovina

BACKGROUND Non-ST segment elevation myocardial infarction(NSTEMi)poses significant challenges in clinical management due to its diverse *** the prognostic role of hematological parameters and derived ratios in NSTEMi patients could aid in risk stratification and improve patient *** To evaluate the predictive value of hemogram-derived ratios for major adverse cardiovascular events(MACE)in NSTEMi patients,potentially improving clinical *** A prospective,observational cohort study was conducted in 2021 at the internal Medicine Clinic of the University Hospital in Tuzla,Bosnia and *** study included 170 patients with NSTEMi,who were divided into a group with MACE and a control group without ***,the MACE group was subdivided into lethal and non-lethal groups for prognostic *** hematological parameters,an additional 13 hematological-derived ratios(HDRs)were monitored,and their prognostic role was *** Hematological parameters did not significantly differ between non-ST segment elevation myocardial infarction(NSTEMi)patients with MACE and a control group at T1 and ***,significant disparities emerged in HDRs among NSTEMi patients with lethal and non-lethal outcomes ***,neutrophil-to-lymphocyte ratio(NLR)and platelet-to-lymphocyte ratio(PLR)were elevated in lethal ***,C-reactive protein-to-lymphocyte ratio(CRP/Ly)at T1(>4.737)demonstrated predictive value[odds ratio(OR):3.690,P=0.024].Both NLR at T1(>4.076)and T2(>4.667)emerged as significant predictors,with NLR at T2 exhibiting the highest diagnostic performance,as indicated by an area under the curve of 0.811(95%Ci:0.727-0.859)and OR of 4.915(95%Ci:1.917-12.602,P=0.001),emphasizing its important role as a prognostic *** This study highlights the significant prognostic value of hemogram-derived indexes in predicting MACE among NSTEMi *** follow-up,NLR,PLR,and CRP/Ly off

关键词： Hemogram-derived ratios Prognostic markers Neutrophil-to-lymphocyte ratio Myocardial infarction

Stochastic modelling and estimation of inertial sensors

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Stochastic modelling and estimation of inertial sensors

One-range addition theorems for generalized integer and noninteger μ Coulomb,and exponential type correlated interaction potentials with hyperbolic cosine in position,momentum,and four-dimensional spaces

第五届中国卫星导航学术年会

作者： Youlong Wu Jinling Wang Xiaoming Wang muwaffaq Alqurashi School of Mechanical Engineering Nanjing University of Science and Technology School of Civil and Environmental Engineering University of New South Wales

The Global Navigation Satellite System（GNSS） and inertial Navigation System（iNS） are two main navigation systems with complementary *** some GNSS challenged environments,due to signal jamming or blockage,iNS becomes stand-alone navigation *** is a dead reckoning based system,and its performance will gradually degrade with *** performance degradation is mainly caused by the deterministic errors and stochastic errors according to their ***,precise modelling inertial sensors are the first and the most important step for the inertial navigation *** errors are due to manufacturing and mounting defects and can be calibrated out from the raw *** the other hand,stochastic errors are the random errors which cannot be removed from the measurements and should be modelled as ***,the better identification of the stochastic errors is critical for *** work on analysing and modelling inertial sensors is based on the computing the Allan variance of inertial sensors output and using least squares fitting or reading results from the Allan variance log-log plot *** paper presents a methodology for estimating the stochastic errors using segmented weighted ***,individual noise is simulated and the noise spectraldensity can be obtained through the least square to validate each noise ***,thesimulation studies with the combination of different noise types are carried out to compare withthe traditional *** proposed algorithm demonstrates remarkable improvement,especially in estimate the long-term errors compared with the traditional *** testresults also confirm the effectiveness of the new method.

关键词： Allan variance·stochastic modelling·inertial sensors

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Chinese Physics B 2012年第6期21卷 137-140页

作者： i.i.Guseinov Department of Physics Faculty of Arts and SciencesOnsekiz Mart UniversityCanakkaleTurkey

The formulae are established in position,momentum,and four-dimensional spaces for the one-range addition theorems of generalized integer and noninteger μ Coulomb,and exponential type correlated interaction potentials with hyperbolic cosine（GCTCP and GETCP HC）.These formulae are expressed in terms of one-range addition theorems of complete orthonormal sets of Ψα-exponential type orbitals（Ψ α-ETO）,α-momentum space orbitals（α-MSO）,and zα-hyperspherical harmonics（zα-HSH） *** one-range addition theorems obtained can be useful in the electronic structure calculations of atoms and molecules when the GCTCP and GETCP HC in position,momentum,and four-dimensional spaces are employed.

关键词： correlated interaction potentials one-range additional theorems complete orthonormalsets of orbitals overlap integrals