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Choroidal thickness measurements in young Saudi adult population: a cross-sectional study

International Journal of Ophthalmology(English edition) 2023年第11期16卷 1814-1819页

作者： Mohammed M Althomali Ahmed A alharbi nouf M Albnayan Abdulaziz M Alkhudhair Muteb K Alanazi Optometry Department College of Applied Medical SciencesKing Saud UniversityRiyadh 11362Saudi Arabia

AIM:To determine the choroidal thickness(CT)in young healthy Saudi adults using spectral-domain optical coherence tomography(SD-OCT)with an automated CT segmentation ***:Fifty-eight young adults(total of 116 eyes),39 males and 19 females participated in this study between the ages of 18 and 38y(mean 22.65±3.9y).All participants underwent ophthalmic screening examination,including the SD-OCT for measurements of CT in each quadrant egmented into five eccentric regions starting from the foveal region up to 4.5 mm towards the ***:The choroid was thickest in the foveal region(central 1 mm,300±60μm)and began to progressively thinner beyond the parafovea(1.5–2.5 mm,284±67μm)towards the peripheral region(3.5–4.5 mm from the fovea,254±83μm).The superior choroid showed the thickest profile(309±57μm),while the nasal choroid exhibited the thinnest(229±76μm).The rate of the thinning with increasing eccentricity was more predominant in the nasal choroid,which thinned from the foveal region(294±58μm)to the peripheral region(158±55μm).The superior and inferior choroid did not show a statistically significant thinning with eccentricity(all P>0.05).There was no statistically significant difference in the CT between gender,age,and laterality of the eyes(all P>0.05).A significant association of myopia with thinner subfoveal choroid was observed(Pearson’s,r=0.37),and regression analysis showed that a 10.3μm choroidal thinning for each diopter increase of ***:CT profile depends on eccentric and the *** CT profile across the measured area in the young Saudi adult population is comparable to other previous *** error is critical for CT evaluation.

关键词： choroidal thickness optical coherence tomography young adults Saudi population

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Predefined Exponential Basis Set for Half-Bounded Multi Domain Spectral Method

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Applied Mathematics 2010年第3期1卷 146-152页

作者： Fahhad alharbi 不详

A non-orthogonal predefined exponential basis set is used to handle half-bounded domains in multi domain spectral method (MDSM). This approach works extremely well for real-valued semi-infinite differential problems. It spans simultaneously wide range of exponential decay rates with multi scaling and does not suffer from zero crossing. These two conditions are necessary for many physical problems. For comparison, the method is used to solve different problems and compared with analytical and published results. The comparison exhibits the strengths and accuracy of the presented basis set.

关键词： Multi-Domain Spectral Method Meshfree numerical Method non-Orthogonal Predefined Exponential Basis Set Half-Bounded Domain Exponential Decay Quantum Wells Optical Waveguide

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Micro-Invasive Glaucoma Surgery with the iStent inject: Impact on IOP and Medication Burden in a Real-World Setting

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Open Journal of Ophthalmology 2020年第1期10卷 89-98页

作者： Abdulmajeed alharbi Department of Ophthalmology College of Medicine Qassim University Al-Mulida Qassim KSA

Background: The iStent inject is a Micro-Invasive Glaucoma Surgical (MIGS) device that has shown to reduce IOP and to be safe for glaucoma patients with fewer complications than regular surgery. Objective: To investigate, up to 15 - 20 months, the efficacy and safety of implantation of two second-generation trabecular microbypass stents in patients with or without prior glaucoma surgery. Methods: Fifty-seven eyes were implanted with the iStent inject. The population was comprised of eyes with primary open-angle glaucoma (n = 51), pseudoexfoliation glaucoma (n = 5) and ocular hypertension (n = 1). Major outcome parameters included IOP, medication needs and corrected distance visual acuity (CDVA). Follow-up time points were one day, 2 - 4 months, 9 - 14 months and 15 - 20 months. Results: The main reason to perform MIGS was IOP reduction in 68.4%, reduced number of medications due to drug intolerance in 24.6% and reduced medication due to compliance issues in 7.0% of the eyes. IOP decreased by 22.47%, from 19.40 ± 3.83 mmHg preoperatively (preop) to 15.04 ± 1.67 mmHg at 15-20 months postoperatively. IOP reduction was achieved at all follow-up time points (p Conclusions: Insertion of the iStent inject in patients with or without prior glaucoma surgery shows effective and sustained improvements in IOP with no safety concerns.

关键词： iStent inject MIGS Glaucoma Intraocular Pressure Visual Acuity Medica-tion need

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A novel Approach for Security Enhancement of Data Encryption Standard

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Computers, Materials & Continua 2023年第6期75卷 5073-5086页

作者： Dawood Shah Tariq Shah Sajjad Shaukat Jamal Mohammad Mazyad Hazzazi Amer Aljaedi Adel R.alharbi Department of Mathematics Quaid-i-Azam UniversityIslamabadPakistan Department of Mathematics College of ScienceKing Khalid UniversityAbhaSaudi Arabia College of Computing and Information Technology University of TabukTabuk71491Saudi Arabia

Data Encryption Standard(DES)is a symmetric key cryptosystem that is applied in different cryptosystems of recent ***,researchers found defects in the main assembling of the DES and declared it insecure against linear and differential *** this paper,we have studied the faults and made improvements in their internal structure and get the new algorithm for Improved *** improvement is being made in the substitution step,which is the only nonlinear component of the *** alteration provided us with great outcomes and increase the strength of ***,a novel 6×6 good quality S-box construction scheme has been hired in the substitution phase of the *** construction involves the Galois field method and generates robust S-boxes that are used to secure the scheme against linear and differential *** again,the key space of the improved DES has been enhanced against the brute force *** out-comes of different performance analyses depict the strength of our proposed substitution boxes which also guarantees the strength of the overall DES.

关键词： DES S-box linear cryptanalysis differential cryptanalysis

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An Intelligent Fine-Tuned Forecasting Technique for Covid-19 Prediction Using neuralprophet Model

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Computers, Materials & Continua 2022年第4期71卷 629-649页

作者： Savita Khurana Gaurav Sharma neha Miglani Aman Singh Abdullah alharbi Wael Alosaimi Hashem Alyami nitin Goyal Information Technology Department Seth Jai Parkash Mukand Lal Institute of Engineering and TechnologyRadaurHaryanaIndia Computer Science&Engineering Department Seth Jai Parkash Mukand Lal Institute of Engineering and TechnologyRadaurHaryanaIndia Computer Engineering Department National Institute of TechnologyKurukshetraHaryanaIndia Computer Science&Engineering Department Lovely Professional UniversityJalandharPunjabIndia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Chitkara University Institute of Engineering and Technology Chitkara UniversityPunjabIndia

COVID-19,being the virus of fear and anxiety,is one of the most recent and emergent of various respiratory *** is similar to the MERS-COV and SARS-COV,the viruses that affected a large population of different countries in the year 2012 and 2002,*** standard models have been used for COVID-19 epidemic prediction but they suffered from low accuracy due to lesser data availability and a high level of *** proposed approach used a machine learning-based time-series Facebook neuralProphet model for prediction of the number of death as well as confirmed cases and compared it with Poisson Distribution,and Random Forest *** analysis upon dataset has been performed considering the time duration from January 1st 2020 to16th July *** model has been developed to obtain the forecast values till September *** study aimed to determine the pandemic prediction of COVID-19 in the second wave of coronavirus in India using the latest Time-Series model to observe and predict the coronavirus pandemic situation across the *** India,the cases are rapidly increasing day-by-day since mid of Feb *** prediction of death rate using the proposed model has a good ability to forecast the COVID-19 dataset essentially in the second *** empower the prediction for future validation,the proposed model works effectively.

关键词： Covid-19 machine learning neuralprophet model poisson distribution prediction random forest model

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Investigation on ²²⁶Ra, ²³⁸Th, 40⁴⁰K and ¹³⁷Cs Concentrations in Common Polishing Materials Consumed by Inhabitants in Saudi Arabia

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Journal of Environmental Protection 2016年第11期7卷 1466-1472页

作者： Wedad Rayif alharbi Department of Physics Faculty Science King Abdulaziz University Jeddah Saudi Arabia

Knowledge of radioactivity present in polishing materials enables one to assess any possible radiological risks to human health. In this work, the radioactivity due to the presence of 226Ra, 232Th, 40K, and 37Cs has been measured in polishing materials con-sumed in Saudi Arabia using gamma spectrometry with HPGe. The activity concentra-tions of 226Ra, 232Th, 40K and 137Cs ranged from 13.61 ± 0.005 to 0.60 ± 0.002, 18.43 ± 0.003 to 0.78 ± 0.001, 342.59 ± 0.009 to 2.47 ± 0.001 and 1.47 ± 0.001 to 0.55 ± 0.001 Bq/l, respectively. For 226Ra and 40K, the highest values are measured in stainless steel polisher. The highest values also measured in metal polisher (copper-chrome) and disinfectant cleaner and polisher sample for 232Th and 137Cs. Radium equivalent activ-ity due to the natural radioactivity of the investigated samples ranged from 51.37 to 1.24 Bq/l. This value is less than the recommended values in the established standards. The evaluated data were compared with the literature data. Our results indicate that no significant radiological hazards arise from using investigated samples hence quite safe to be used as polishing materials.

关键词： Gamma Spectrometry Radiation Hazard Polishing Materials natural Radioactivity

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An Intelligent Forecasting Model for Disease Prediction Using Stack Ensembling Approach

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Computers, Materials & Continua 2022年第3期70卷 6041-6055页

作者： Shobhit Verma nonita Sharma Aman Singh Abdullah alharbi Wael Alosaimi Hashem Alyami Deepali Gupta nitin Goyal Computer Science&Engineering Department Dr.B.R.Ambedkar National Institute of TechnologyJalandharIndia Computer Science&Engineering Department Lovely Professional UniversityJalandharIndia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Chitkara University Institute of Engineering and Technology Chitkara UniversityPunjabIndia

This research work proposes a new stack-based generalization ensemble model to forecast the number of incidences of conjunctivitis *** addition to forecasting the occurrences of conjunctivitis incidences,the proposed model also improves performance by using the ensemble *** rate of acute Conjunctivitis per 1000 for Hong Kong is collected for the duration of the first week of January 2010 to the last week of December ***-processing techniques such as imputation of missing values and logarithmic transformation are applied to pre-process the data sets.A stacked generalization ensemble model based on Auto-ARIMA(Autoregressive Integrated Moving Average),nnAR(neural network Autoregression),ETS(Exponential Smoothing),HW(Holt Winter)is proposed and applied on the *** analysis is conducted on the collected dataset of conjunctivitis disease,and further compared for different performance *** result shows that the RMSE(Root Mean Square Error),MAE(Mean Absolute Error),MAPE(Mean Absolute Percentage Error),ACF1(Auto Correlation Function)of the proposed ensemble is decreased *** the RMSE,for instance,error values are reduced by 39.23%,9.13%,20.42%,and 17.13%in comparison to Auto-ARIMA,nAR,ETS,and HW model *** research concludes that the accuracy of the forecasting of diseases can be significantly increased by applying the proposed stack generalization ensemble model as it minimizes the prediction error and hence provides better prediction trends as compared to Auto-ARIMA,nAR,ETS,and HW model applied discretely.

关键词： Disease prediction stack ensemble neural network autoregression exponential smoothing auto-ARIMA holt winter

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Evaluating the Impacts of Security-Durability Characteristic:Data Science Perspective

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Computer Systems Science & Engineering 2022年第5期41卷 557-567页

作者： Abdullah alharbi Masood Ahmad Wael Alosaimi Hashem Alyami Alka Agrawal Rajeev Kumar Abdul Wahid Raees Ahmad Khan Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Information Technology Babasaheb Bhimrao Ambedkar UniversityLucknow226025India Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Computer Applications Shri Ramswaroop Memorial UniversityBarabanki225003India Department of Computer Science and Information Technology Maulana Azad National Urdu UniversityHyderabad500032India

Since the beginning of web applications,security has been a critical study *** has been a lot of research done to figure out how to define and identify security goals or ***,high-security web apps have been found to be less durable in recent years;thus reducing their business *** security features of a web application are worthless unless they provide effective services to the user and meet the standards of commercial ***,there is a necessity to link in the gap between durability and security of the web ***,security mechanisms must be used to enhance durability as well as the security of the web *** durability and security are not related directly,some of their factors influence each other *** play an important role in reducing the void between durability and *** this respect,the present study identifies key characteristics of security and durability that affect each other indirectly and directly,including confidentiality,integrity availability,human trust and *** importance of all the attributes in terms of their weight is essential for their influence on the whole security during the development procedure of web *** estimate the efficacy of present study,authors employed the Hesitant Fuzzy Analytic Hierarchy Process(H-Fuzzy AHP).The outcomes of our investigations and conclusions will be a useful reference for the web application developers in achieving a more secure and durable web application.

关键词： Software security durability durability of security services web application development process

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Energy and Latency Optimization in Edge-Fog-Cloud Computing for the Internet of Medical Things

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Computer Systems Science & Engineering 2023年第10期47卷 1299-1319页

作者： Hatem A.alharbi Barzan A.Yosuf Mohammad Aldossary Jaber Almutairi Department of Computer Engineering College of Computer Science and EngineeringTaibah UniversityMadinahSaudi Arabia School of Electronic and Electrical Engineering University of LeedsLeedsU.K Department of Computer Science College of Arts and SciencePrince Sattam bin Abdulaziz UniversityAl-KharjSaudi Arabia Department of Computer Science College of Computer Science and EngineeringTaibah UniversityMadinahSaudi Arabia

In this paper,the Internet ofMedical Things(IoMT)is identified as a promising solution,which integrates with the cloud computing environment to provide remote health monitoring solutions and improve the quality of service(QoS)in the healthcare ***,problems with the present architectural models such as those related to energy consumption,service latency,execution cost,and resource usage,remain a major concern for adopting IoMT *** address these problems,this work presents a four-tier IoMT-edge-fog-cloud architecture along with an optimization model formulated using Mixed Integer Linear Programming(MILP),with the objective of efficiently processing and placing IoMT applications in the edge-fog-cloud computing environment,while maintaining certain quality standards(e.g.,energy consumption,service latency,network utilization).A modeling environment is used to assess and validate the proposed model by considering different traffic loads and processing *** comparison to the other existing models,the performance analysis of the proposed approach shows a maximum saving of 38%in energy consumption and a 73%reduction in service *** results also highlight that offloading the IoMT application to the edge and fog nodes compared to the cloud is highly dependent on the tradeoff between the network journey time saved *** extra power consumed by edge or fog resources.

关键词： Internet of medical things(IoMT) e-healthcare edge-fog-cloud computing remote monitoring energy consumption computation offloading

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Spoofing Face Detection Using novel Edge-net Autoencoder for Security

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Intelligent Automation & Soft Computing 2023年第3期35卷 2773-2787页

作者： Amal H.alharbi S.Karthick K.Venkatachalam Mohamed Abouhawwash Doaa Sami Khafaga Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh 11671Saudi Arabia Department of Electrical Electronics and Communication Engineering GITAM School of TechnologyGITAM Deemed to be UniversityBengaluru CampusKarnataka560065India Department of Computer Science and Engineering CHRIST(Deemed to be University)Bangalore560074India Department of Mathematics Faculty of ScienceMansoura UniversityMansoura 35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast LansingMI48824USA

Recent security applications in mobile technologies and computer sys-tems use face recognition for high-end *** numerous security tech-niques,face recognition is considered a high-security *** fuse and carry out face identiﬁcation as an access authority into these ***,face identiﬁcation authentication is sensitive to attacks with a 2-D photo image or captured video to access the system as an authorized *** the existing spooﬁng detection algorithm,there was some loss in the recreation of *** research proposes an unobtrusive technique to detect face spooﬁng attacks that apply a single frame of the sequenced set of frames to overcome the above-said *** research offers a novel Edge-net autoencoder to select convoluted and dominant features of the input diffused ***,this pro-posed method is tested with the Cross-ethnicity Face Anti-spooﬁng(CASIA),Fetal alcohol spectrum disorders(FASD)*** database has three models of attacks:distorted photographs in printed form,photographs with removed eyes portion,and video *** images are taken with three different quality cameras:low,average,and high-quality real and spoofed *** extensive experimental study was performed with CASIA-FASD,3 Diagnostic Machine Aid-Digital(DMAD)dataset that proved higher results when compared to existing algorithms.

关键词： Image processing edge detection edge net auto-encoder face authentication digital security

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