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Data-Driven Models for Predicting Solar Radiation in Semi-Arid Regions

Computers, Materials & Continua 2023年第1期74卷 1625-1640页

作者： Mehdi Jamei Nadjem Bailek Kada Bouchouicha Muhammed A.Hassan ahmed elbeltagi Alban Kuriqi Nadhir Al-Ansar Javier Almorox el-Sayed M.el-kenawy Engineering Faculty Shohadaye Hoveizeh Campus of TechnologyShahid Chamran University of AhvazDashte AzadeganIran Energies and Materials Research Laboratory Department of Matter SciencesFaculty of Sciences and TechnologyUniversity of TamanghassetTamanghassetAlgeria Unitéde Recherche en Energies Renouvelables en Milieu Saharien(URERMS) Centre de Développement des Energies Renouvelables(CDER)01000AdrarAlgeria Mechanical Power Engineering Department Faculty of EngineeringCairo UniversityGiza12613GizaEgypt Agricultural Engineering Department Faculty of AgricultureMansoura UniversityMansoura35516Egypt CERIS Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal Department of Civil Environmental and Natural Resources EngineeringLulea University of Technology97187LuleaSweden Universidad Politécnica de Madrid UPMAvd.Puerta de Hierro28040MadridSpain Department of Communications and electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt

Solar energy represents one of themost important renewable energy sources contributing to the energy transition *** that the observation of daily global solar radiation(GSR)is not affordable in some parts of the globe,there is an imperative need to develop alternative ways to predict ***,the main objective of this study is to evaluate the performance of different hybrid data-driven techniques in predicting daily GSR in semi-arid regions,such as the majority of Spanish ***,four ensemble-based hybrid models were developed by hybridizing Additive Regression(AR)with Random Forest(RF),Locally Weighted Linear Regression(LWLR),Random Subspace(RS),and *** base algorithms of the developed models are scarcely applied in previous studies to predict solar *** testing phase outcomes demonstrated that the ARRF models outperform all other hybrid *** provided models were validated by statisticalmetrics,such as the correlation coefficient(R)and root mean square error(RMSE).The results proved that Scenario#6,utilizing extraterrestrial solar radiation,relative humidity,wind speed,and mean,maximum,and minimum ambient air temperatures as the model inputs,leads to the most accurate predictions among all scenarios(R=0.968–0.988 and RMSE=1.274–1.403 MJ/m^(2)・d).Also,Scenario#3 stood in the next rank of accuracy for predicting the solar radiation in both validating *** AD-RF model was the best predictive,followed by AD-RS and ***,this study recommends new effective methods to predict GSR in semiarid regions.

关键词： Solar radiation prediction random forest locally-weighted linear regression additive regression

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Optimization Task Scheduling Using Cooperation Search Algorithm for Heterogeneous Cloud Computing Systems

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Computers, Materials & Continua 2023年第1期74卷 2133-2148页

作者： ahmed Y.Hamed M.Kh.elnahary Faisal S.Alsubaei Hamdy H.el-Sayed Department of Computer Science Faculty of Computers and Artificial IntelligenceSohag UniversitySohag82524Egypt Department of Cybersecurity College of Computer Science and EngineeringUniversity of JeddahJeddah21959Saudi Arabia

Cloud computing has taken over the high-performance distributed computing area,and it currently provides on-demand services and resource polling over the *** a result of constantly changing user service demand,the task scheduling problem has emerged as a critical analytical topic in cloud *** primary goal of scheduling tasks is to distribute tasks to available processors to construct the shortest possible schedule without breaching precedence *** and schedules of tasks substantially influence system operation in a heterogeneous multiprocessor *** diverse processes inside the heuristic-based task scheduling method will result in varying makespan in the heterogeneous computing *** a result,an intelligent scheduling algorithm should efficiently determine the priority of every subtask based on the resources necessary to lower the *** research introduced a novel efficient scheduling task method in cloud computing systems based on the cooperation search algorithm to tackle an essential task and schedule a heterogeneous cloud computing *** basic idea of thismethod is to use the advantages of meta-heuristic algorithms to get the optimal *** assess our algorithm’s performance by running it through three scenarios with varying numbers of *** findings demonstrate that the suggested technique beats existingmethods NewGenetic Algorithm(NGA),Genetic Algorithm(GA),Whale Optimization Algorithm(WOA),Gravitational Search Algorithm(GSA),and Hybrid Heuristic and Genetic(HHG)by 7.9%,2.1%,8.8%,7.7%,3.4%respectively according to makespan.

关键词： Heterogeneous processors cooperation search algorithm task scheduling cloud computing

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Shadow Extraction and elimination of Moving Vehicles for Tracking Vehicles

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Computers, Materials & Continua 2023年第11期77卷 2009-2030页

作者： Kalpesh Jadav Vishal Sorathiya Walid el-Shafai Torki Altameem Moustafa HAly Vipul Vekariya Kawsar ahmed Francis MBui Department of electronics&Communication Engineering Faculty of Engineering and TechnologyParul Institute of Engineering and TechnologyParul UniversityVadodaraGujarat391760India Department electronics and electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Computer Science Department Community CollegeKing Saud UniversityRiyadh11362Saudi Arabia electronics and Communications Engineering Department College of Engineering and TechnologyArab Academy for ScienceTechnology and Maritime TransportAlexandria1029Egypt Department of Computer Engineering Faculty of Engineering and TechnologyParul Institute of Engineering and TechnologyParul UniversityVadodaraGujarat391760India Department of electrical and Computer Engineering University of Saskatchewan57 Campus DriveSaskatoonSK S7N5A9Canada

Shadow extraction and elimination is essential for intelligent transportation systems(ITS)in vehicle tracking *** shadow is the source of error for vehicle detection,which causes misclassification of vehicles and a high false alarm rate in the research of vehicle counting,vehicle detection,vehicle tracking,and *** of the existing research is on shadow extraction of moving vehicles in high intensity and on standard datasets,but the process of extracting shadows from moving vehicles in low light of real scenes is *** real scenes of vehicles dataset are generated by self on the Vadodara–Mumbai highway during periods of poor illumination for shadow extraction of moving vehicles to address the above *** paper offers a robust shadow extraction of moving vehicles and its elimination for vehicle *** method is distributed into two phases:In the first phase,we extract foreground regions using a mixture of Gaussian model,and then in the second phase,with the help of the Gamma correction,intensity ratio,negative transformation,and a combination of Gaussian filters,we locate and remove the shadow region from the foreground *** to the outcomes proposed method with outcomes of an existing method,the suggested method achieves an average true negative rate of above 90%,a shadow detection rate SDR(η%),and a shadow discrimination rate SDR(ξ%)of 80%.Hence,the suggested method is more appropriate for moving shadow detection in real scenes.

关键词： Change illuminations ImageJ software intelligent traffic systems mixture of Gaussian model National Institute of Health vehicle tracking

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Magnetoresistive properties of Ni-doped La_(0.7)Sr_(0.3)MnO_3 manganites

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Rare Metals 2016年第7期35卷 551-558页

作者： ahmed Mohamed ahmed Abd el-Moez ahmed Mohamed Medhat Abdelrady Abdellateef Hassan ahmed Abd el-Ghanny Physics Department Faculty of ScienceSohag University

Lao.7Sr0.3Mnl_xNixO3 （x = 0, 0.025, 0.050 and 0.075） ceramics were prepared by the conventional solid-state reaction method. The partial substitution of Mn by Ni2＋ leads to a decrease in cell volume as well as a structural transition from the rhombohedral to the orthorhombic structure. Ni2＋ doping increases the electrical resistivity, decreases the semiconductor-metal transition temperature （Tms） and relatively enhances the room temperature magnetoresistance （MR）, especially in x = 0.025 and around Tins. With respect to conduction mechanism, the small polaron hopping （SPH） and the variable range hopping （VRH） models were used to ex- amine conduction in the semiconducting region.

关键词： Manganites X-ray diffraction Structure electrical resistivity Magnetoresistance

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COVID-19-induced transaminitis and hyperbilirubinemia:Presentation and outcomes

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World Journal of Gastroenterology 2023年第7期29卷 1123-1130页

作者： Zeinab Nabil ahmed Said Safinaz Adel el Habashy Samy Zaky ESCMID Study Group for Viral Hepatitis Department of Medical Microbiology and Immunology Faculty of Medicine(For Girls)Al-Azhar UniversityCairo 11754Nasr CityEgypt Department of Pediatrics Ain Shams UniversityCairo 11391AbbaseiaEgypt Department of Hepato-gastroenterology and Infectious Diseases Faculty of Medicine(For Girls)Al-Azhar UniversityCairo 11754Egypt 不详

The risk of liver injury in patients with coronavirus disease 2019(COVID-19)infection is quite ***,liver function test abnormalities are still detected in COVID-19 patients despite the development of antivirals and the availability of several types of *** editorial describes liver involvement during COVID-19 infection in patients with or without preexisting liver injury,such as chronic liver disease,to elucidate COVID-19-induced liver function abnormalities and their severity,pathophysiology,clinical manifestations,and clinical and laboratory *** also discuss the effect of vaccination against COVID-19 to better understand host factors,such as age,gender,and race,on the incidence and severity of liver dysfunction at initial presentation and during the ***,we summarize the results of relevant meta-analyses published to date and highlight the importance of adequate liver function monitoring in the current climate of the overwhelming COVID-19 pandemic.

关键词： COVID-19 SARS-CoV-2 Liver injury Transaminases Hyperbilirubinemia Pathophysiology

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Role of cannabinoids and the endocannabinoid system in modulation of diabetic cardiomyopathy

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World Journal of Diabetes 2022年第5期13卷 387-407页

作者： Mona F el-Azab ahmed E Wakiel Yossef K Nafea Mahmoud E Youssef Department of Pharmacology and Toxicology Faculty of PharmacySuez Canal UniversityIsmailia 41522Egypt Program of Biochemistry McMaster UniversityHamilton L8S 4L8OntarioCanada Department of Pharmacology and Biochemistry Delta University for Science and TechnologyMansoura 35511New CairoEgypt

Diabetic complications,chiefly seen in long-term situations,are persistently deleterious to a large extent,requiring multi-factorial risk reduction strategies beyond glycemic *** cardiomyopathy is one of the most common deleterious diabetic complications,being the leading cause of mortality among diabetic *** mechanisms of diabetic cardiomyopathy are multi-factorial,involving increased oxidative stress,accumulation of advanced glycation end products(AGEs),activation of various pro-inflammatory and cell death signaling pathways,and changes in the composition of extracellular matrix with enhanced cardiac *** novel lipid signaling system,the endocannabinoid system,has been implicated in the pathogenesis of diabetes and its complications through its two main receptors:Cannabinoid receptor type 1 and cannabinoid receptor type 2,alongside other ***,the role of the endocannabinoid system in diabetic cardiomyopathy has not been fully *** review aims to elucidate the possible mechanisms through which cannabinoids and the endocannabinoid system could interact with the pathogenesis and the development of diabetic *** mechanisms include oxidative/nitrative stress,inflammation,accumulation of AGEs,cardiac remodeling,and autophagy.A better understanding of the role of cannabinoids and the endocannabinoid system in diabetic cardiomyopathy may provide novel strategies to manipulate such a serious diabetic complication.

关键词： Δ9-tetrahydrocannabinol Autophagy Cannabinoid receptors Diabetic cardiomyopathy Endocannabinoid system Inflammation

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Controlled drainage in the Nile River delta of Egypt:a promising approach for decreasing drainage off-site effects and enhancing yield and water use efficiency of wheat

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Journal of Arid Land 2023年第4期15卷 460-476页

作者： Mohamed K el-GHANNAM Fatma WASSAR Sabah MORSY Mohamed HAFEZ Chiter M PARIHAR Kent O BURKEY ahmed M ABDALLAH Soil Water and Environment Research InstituteAgricultural Research CenterGiza 12112Egypt Higher Institute of Water Sciences and Techniques of Gabès University of GabèsGabès 6072Tunisia Institute of Arid Regions Medenine 4119Tunisia Crop Science Department Faculty of AgricultureDamanhour UniversityDamanhour 22516Egypt Land and Water Technologies Department Arid Lands Cultivation Research InstituteCity of Scientific Research and Technological ApplicationsNew Borg El-Arab 21934Egypt Indian Council of Agricultural Research(ICAR)-Indian Agricultural Research Institute(IARI) New Delhi 110012India United States Department of Agriculture(USDA)-Agricultural Research Services(ARS) Plant Science Research UnitNorth Carolina 27607USA Natural Resources and Agricultural Engineering Department Faculty of AgricultureDamanhour UniversityDamanhour 22516Egypt

North Africa is one of the most regions impacted by water *** implementation of controlled drainage(CD)in the northern Nile River delta of Egypt is one strategy to decrease irrigation,thus alleviating the negative impact of water *** study investigated the impacts of CD at different levels on drainage outflow,water table level,nitrate loss,grain yield,and water use efficiency(WUE)of various wheat *** levels of CD,i.e.,0.4 m below the soil surface(CD-0.4)and 0.8 m below the soil surface(CD-0.8),were compared with subsurface free drainage(SFD)at 1.2 m below the soil surface(SFD-1.2).Under each drainage treatment,four wheat cultivars were grown for two growing seasons(November 2018–April 2019 and November 2019–April 2020).Compared with SFD-1.2,CD-0.4 and CD-0.8 decreased irrigation water by 42.0%and 19.9%,drainage outflow by 40.3%and 27.3%,and nitrate loss by 35.3%and 20.8%,*** CD treatments,plants absorbed a significant portion of their evapotranspiration from shallow groundwater(22.0%and 8.0%for CD-0.4 and CD-0.8,respectively).All wheat cultivars positively responded to CD treatments,and the highest grain yield and straw yield were obtained under CD-0.4 *** the initial soil salinity as a reference,the soil salinity under CD-0.4 treatment increased two-fold by the end of the second growing season without negative impacts on wheat *** the drainage system by raising the outlet elevation and considering shallow groundwater contribution to crop evapotranspiration promoted water-saving and *** responses could be obtained based on the different plant tolerance to salinity and water stress,crop characteristics,and growth ***-specific soil salinity management practices will be required to avoid soil salinization due to the adoption of long-term shallow groundwater in Egypt and other similar agroecosystems.

关键词： drainage ratio nitrate loss water use efficiency yield soil salinity Nile River delta

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A multidisciplinary approach to sphincter pharyngoplasty for correction of velopharyngeal dysfunction following repair of cleft palate

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Chinese Journal Of Plastic and Reconstructive Surgery 2022年第3期4卷 105-109页

作者： Nabil Mokhter Mohamed ahmed Mohamed Zayed Ayman Mohamed Amer ahmed Hassan el-Sabbagh Omar Osama Shouman Plastic Surgery Center Faculty of MedicineMansoura UniversityMansoura 35516Egypt Phoniatric Unit Department of ENTFaculty of MedicineMansoura UniversityMansoura 35516Egypt

Background:Management of severe velopharyngeal dysfunction is best performed by a multispecialty *** team could include a speech-language pathologist,otolaryngologist,prosthodontist,and a plastic *** most commonly performed surgical procedures in complicated cases with scarred soft palate are sphincter pharyngoplasty and pharyngeal *** this study,a multidisciplinary approach was applied for proper assessment and surgical intervention using sphincter pharyngoplasty for velopharyngeal insufficiency after cleft palate ***:Twenty patients underwent sphincter *** diagnosis was performed using auditory perceptual assessment,nasoendoscopy assessment,nasometry,and ***:There were statistically significant differences between the preoperative and postoperative *** occurred in two *** sleep apnea occurred in three patients and was resolved spontaneously within three months,and one patient experienced slight wound ***:Velopharyngeal dysfunction after cleft palate repair is best treated by a multidisciplinary team through speech therapy together with sphincter pharyngoplasty.

关键词： Velopharyngeal insufficiency Clinical diagnostic tools Sphincter pharyngoplasty

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Opto-Video Encryption Based on Logistic Adjusted Sine map in FrFT

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Computers, Materials & Continua 2022年第8期72卷 3651-3663页

作者： Osama S.Faragallah Ashraf Afifi Ibrahim F.elashry Ensherah A.Naeem Heba M.el-Hoseny ahmed I.Sallam Hala S.el-sayed Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of electrical Engineering Kafrelsheikh UniversityKafrelsheikh 61519Egypt electrical Department Faculty of Industrial EducationSuez UniversitySuez 43527Egypt Department of electronics and electrical Communication Engineering Al-Obour High Institute for Engineering and Technology 3036Egypt Department of Computer Science and Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf 32952Egypt Department of electrical Engineering Faculty of EngineeringMenoufia UniversityShebin El-Kom 32511Egypt

In the last few years,videos became the most common form of information transmitted over the internet,and a lot of the traffic is confidential and must be protected and delivered safely to its intended *** introduces the challenges of presenting encryption systems that can encode videos securely and efficiently at the same *** paper presents an efficient opto-video encryption system using Logistic Adjusted Sine map(LASM)in the Fractional Fourier Transform(FrFT).In the presented opto-video LASM-based FrFT scheme,the encoded video is split into distinct frames and transformed into optical signals utilizing an optical *** of the developed optical video frames is ciphered by utilizing the LASM in optical FrFT system using two-phase modulation forms on the video frame,the first in the time-domain and the second in the FrFT *** the end,the ciphervideo frame is spotted utilizing a CCD digital camera and transformed into a digital structure that can be managed using a *** test the proposed opto-video LASM-based FrFT scheme using various security *** outcomes demonstrate that the presented scheme can effectively encrypt and decrypt video *** addition,it encrypts videos with a high level of encryption qualitywithout sacrificing its resistance to noise ***,the test outcomes demonstrate that the presented scheme is immune to known attacks.

关键词： Optical encryption FrFT logistic-adjusted sine map

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Cooling and lubrication techniques in grinding:A state-of-the-art review,applications,and sustainability assessment

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Chinese Journal of Aeronautics 2023年第7期36卷 76-113页

作者： ahmed Mohamed Mahmoud IBRAHIM Wei LI Abdel-Hamid ISMAIL MOURAD Mohamed A.E.OMER Fadl A.ESSA ahmed Mustafa ABD el-NABY Mohammad S.Al SOUFI Muhammad F.EZZAT Ammar elSHEIKH College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China Production Engineering and Mechanical Design Department Faculty of EngineeringMinia UniversityEl Minya 61519Egypt Mechanical and Aerospace Engineering Department College of EngineeringUnited Arab Emirates UniversityAl-Ain 15551United Arab Emirates Department of Production Engineering and Mechanical Design Faculty of EngineeringTanta UniversityTanta 31527Egypt Mechanical Engineering Department Faculty of EngineeringKafrelsheikh UniversityKafrelsheikh 33516Egypt Mechanical Engineering Department College of Engineering and Islamic ArchitectureUmm Al-Qura UniversityMakkah 24231Saudi Arabia Mechanical Engineering Department Faculty of EngineeringUniversity of AlbertaEdmonton T6G 2R3Canada Automotive and Tractors Engineering Department Faculty of EngineeringMinia UniversityEl Minya 61519Egypt Tokyo Institute of Technology Tokyo 152-8550Japan

Grinding technology is an essential manufacturing operation,in particular,when a component with a superfinishing and an ultra-resolution is *** the required strict quality checklist with maintaining a high level of productivity and sustainability is a substantive *** recent paper outlines the lubrication and cooling technologies and mediums that are used for ***,it provides a basis for a critical assessment of the different lubrication/cooling techniques in terms of machining outputs,environmental impact,hygiene effect,***,the paper put light on the sustainability of different cooling/lubrication *** sustainability of machining aims to get the product with the best accuracy and surface quality,minimum energy consumption,low environmental impact,reasonable economy,and minimum effect on worker’s *** paper revealed that despite some cooling/lubrication mediums like mineral oils and semisynthetic,afford sufficient lubrication or cooling,they have a significant negative impact on the environment and public *** the other hand,emulsions can overcome environmental problems but the economy and the energy consumption during grinding are still a matter of *** and vegetable oils are considered eco-friendly oils,but they suffer from a lack of thermal stability which affects their ability of efficiently *** the cooling medium with the lowest amount can achieve the goal of the economy but it may be reflected negatively on the ***,cryogenic lubrication doesn’t provide sufficient lubrication to reduce friction and hence energy *** research described in the paper is such a comprehensive compilation of knowledge regarding the machinability and machining performance under different cooling and lubrication systems that it will aid the next generation of scientists in identifying current advancements as well as potential future directions of research on ecolo

关键词： Cryogenic cooling Dry lubrication Minimum quantity lubrication Precision grinding Solid lubrication Sustainable machining Vegetable oils

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