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Heterogeneous performance analysis of the new model of CFAR detectors for partially-correlated χ~2-targets

Journal of Systems Engineering and Electronics 2018年第1期29卷 1-17页

作者： EL_MASHADE Mohamed bakry Electrical Engineering Department Faculty of Engineering Al Azhar University

To mitigate the deleterious effects of clutter and jammer, modern radars have adopted adaptive processing techniques such as constant false alarm rate(CFAR) detectors which are widely used to prevent clutter and noise interference from saturating the radar’s display and preventing targets from being *** paper concerns with the detection analysis of the novel version of CFAR schemes(cell-averaging generalized trimmed-mean,CATM) in the presence of additional outlying targets other than the target under research. The spurious targets as well as the tested one are assumed to be fluctuating in accordance with the χ~2-model with two-degrees of freedom. In this situation, the processor performance is enclosed by the swerling models(SWI and SWII). Between these bounds, there is an important class of target fluctuation which is known as moderately fluctuating targets. The detection of this class has many practical applications. Structure of the CATM detector is described briefly. Detection performances for optimal, CAM, CA, trimmed-mean(TM) and ordered-statistic(OS) CFAR strategies have been analyzed and compared for desired probability of false alarm and determined size of the reference window. False alarm rate performance of these processors has been evaluated for different strengths of interfering signal and the effect of correlation among the target returns on the detection and false alarm performances has also been studied. Our numerical results show that, with a proper choice of trimming parameters,the novel model CAM presents an ideal detection performance outweighing that of the Neyman-Pearson detector on condition that the tested target obeys the SWII model in its fluctuation. Although the new models CAS and CAM can be treated as special cases of the CATM algorithm, their multi-target performance is modest even it has an enhancement relative to that of the classical CAcheme. Additionally, they fail to maintain the false alarm rate constant when the operati

关键词： adaptive target detection multi-pulse performance noise and interference partially-correlated χ~2-targets SWI & SWII target fluctuation models target multiplicity environments

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Potassium and Zinc in Relation to Improve Flax Varieties Yield and Yield Components as Grown under Sandy Soil Conditions

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Agricultural Sciences 2015年第1期6卷 152-158页

作者： bakry Ahmed bakry Osama Anour Nofal Mohamed Soliman Zeidan mahmoud Hozayn Field Crops Department National Research Centre Cairo Egypt Plant Nutrition Department National Research Centre Cairo Egypt

Two field experiments were carried out at the experimental station of National Research Centre, Al-Nubaria District, El-Behira Governorate, Egypt during winter seasons of 2011/2012 and 2012/2013 to study the effect of potassium soil application at the rates (0, 50, 75 and 100 kg/fed.) with or without chelated zinc foliar application 5% at the rate of (0.03 kg/fed.) on the yield and quality of two flax varieties (Sakha-2 and Amon) in newly reclaimed sandy soil. The obtained results could be summarized as follow: Sakha-2 variety significantly surpassed Amon in plant height, technical length, number of branches/plant, seed yield/plant, straw yield/plant, 1000 seed weight, seed yield/fed., straw yield/fed., fiber %, fiber yield/fed. and oil yield/fed. Amon variety surpassed Sakha-2 in fruiting zone length, number of capsules/plant and oil % in both seasons. Potassium soil application at the rate of (100 kg/fed.) with chelated zinc foliar application 5% at the rate of (0.03 kg/fed.) gave the highest value for all studied characters.

关键词： Flax Potassium Fertilizer Zinc Fertilizer

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Semantic Pneumonia Segmentation and Classification for Covid-19 Using Deep Learning Network

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Computers, Materials & Continua 2022年第10期73卷 1141-1158页

作者： M.M.Lotfy Hazem M.El-bakry M.M.Elgayar Shaker El-Sappagh G.Abdallah M.I A.A.Soliman Kyung Sup Kwak Department of Mathematics Faculty of ScienceArish UniversityArish45511Egypt Department of Information Systems Faculty of Computers and InformationMansoura UniversityMansoura35511Egypt Department of Information Technology Faculty of Computers and InformationMansoura UniversityMansoura35511Egypt Centro Singular de Investigación en Tecnoloxías Intelixentes(CiTIUS) Universidade de Santiago de CompostelaSantiago de Compostela15705Spain Information Systems Department Faculty of Computers and Artificial IntelligenceBenha UniversityBenha13512Egypt Department of Information and Communication Engineering Inha UniversityIncheon22212Korea

Early detection of the Covid-19 disease is essential due to its higher rate of infection affecting tens of millions of people,and its high number of deaths also by 7%.For that purpose,a proposed model of several stages was *** first stage is optimizing the images using dynamic adaptive histogram equalization,performing a semantic segmentation using DeepLabv3Plus,then augmenting the data by flipping it horizontally,rotating it,then flipping it *** second stage builds a custom convolutional neural network model using several pre-trained ***,the model compares the pre-trained data to the new output,while repeatedly trimming the best-performing models to reduce complexity and improve memory *** experiments were done using different techniques and ***,the proposed model achieved an average accuracy of 99.6%and an area under the curve of 0.996 in the Covid-19 *** paper will discuss how to train a customized intelligent convolutional neural network using various parameters on a set of chest X-rays with an accuracy of 99.6%.

关键词： SARS-COV2 COVID-19 pneumonia deep learning network semantic segmentation smart classification

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Development of a Smart Technique for Mobile Web Services Discovery

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Computers, Materials & Continua 2021年第11期69卷 1483-1501页

作者： Mohamed Eb-Saad Yunyoung Nam Hazem M.El-bakry Samir Abdelrazek Department of Information Systems Faculty of Computers and InformationMansoura UniversityMansoura35516Egypt Department of Computer Science and Engineering Soonchunhyang UniversityAsan31538Korea

Web service(WS)presents a good solution to the interoperability of different types of systems that aims to reduce the overhead of high processing in a resource-limited *** the increasing demand for mobile WS(MWS),the WS discovery process has become a significant challenging point in the WS lifecycle that aims to identify the relevant MWSs that best match the service *** discovery process is a resource-consuming task that cannot be performed efficiently in a mobile computing environment due to the limitations of mobile ***,a cloud computing can provide rich computing resources for mobile environments given its unlimited and easily scalable *** paper proposes a semantic WS discovery and invocation framework in mobile environments based on cloud and a relationship-aware matchmaking *** discovery algorithm enriches MWS and user requests semantically with the functional and non-functional properties of Ontology Web Language for Services,such as Quality of Web Service,device context,and user *** WS repository is filtered based on logical reasoning and a parameter-based matching algorithm to minimize the matching space and improve runtime *** cosine similarity between the user request and services repository is then assessed to generate the most relevant *** relationships among concepts in the ontology are considered to improve the recall and precision *** the WS discovery process,users can invoke and test these services in a mobile environment through a dynamic user *** interface of the invocation process is changed according to the WS description *** application prototype is also developed to evaluate the framework based on a Cordova cross-mobile development framework.

关键词： Cloud web service web service discovery semantic matching mobile web service discovery

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Astrophysical parameters of ten poorly studied open star clusters

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Research in Astronomy and Astrophysics 2012年第1期12卷 75-83页

作者： Ashraf Latif Tadross Reda El-Bendary Anas Osman Nader Ismail Abdel Aziz bakry National Research Institute of Astronomy & Geophysics Faculty of Science Al-Azhar University

We present the fundamental parameters of ten open star clusters, nominated from Kronberger et al. who presented some newly discovered stellar groups on the basis of the Two Micron All Sky Survey photometry and Digitized Sky Survey visual images. Star counts and photometric parameters （radius, membership, distance, color excess, age, luminosity function, mass function, total mass, and dynamical relaxation time） have been determined for these ten clusters for the first time. In order to calibrate our procedures, the main parameters （distance, age, and color excess） have been reestimated for another five clusters, which are also studied by Kronberger et al.

关键词： Galaxy: open clusters and associations: general-- stars: luminosity func-tion mass function -- catalogs surveys -- infrared: stars

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Calcitonin and vitamin D3 have high therapeutic potential for improving diabetic mandibular growth

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International Journal of Oral Science 2016年第1期8卷 39-44页

作者： Mona A Abbassy Ippei Watari Ahmed S bakry Takashi Ono Ali H Hassan Orthodontic Department Faculty of DentistryKing Abdulaziz UniversityJeddahSaudi Arabia Department of Orofacial Development and Function Division of Oral Health SciencesGraduate SchoolTokyo Medical and Dental UniversityTokyoJapan Alexandria University AlexandriaEgypt Conservative Dentistry Department Faculty of DentistryKing Abdulaziz UniversityJeddahSaudi Arabia Cariology and Operative Dentistry Department Graduate School of Medical and Dental SciencesTokyo Medical&Dental UniversityTokyoJapan Conservative Dentistry Department Faculty of DentistryAlexandria UniversityAlexandriaEgypt

The goal of this study was to assess the effect of the intermittent combination of an antiresorptive agent （calcitonin） and an anabolic agent （vitamin D3） on treating the detrimental effects of Type 1 diabetes mellitus （DM） on mandibular bone formation and growth. Forty 3-week-old male Wistar rats were divided into four groups： the control group （normal rats）, the control C＋D group （normal rats injected with calcitonin and vitamin D3）, the diabetic C＋D group （diabetic rats injected with calcitonin and vitamin D3） and the diabetic group （uncontrolled diabetic rats）. An experimental DM condition was induced in the male Wistar rats in the diabetic and diabetic C＋ D groups using a single dose of 60 ***-1 body weight of streptozotocin. Calcitonin and vitamin D3 were simultaneously injected in the rats of the control C＋D and diabetic C＋D groups. All rats were killed after 4 weeks, and the right mandibles were evaluated by micro-computed tomography and histomorphometric analysis. Diabetic rats showed a significant deterioration in bone quality and bone formation （diabetic group）. By contrast, with the injection of calcitonin and vitamin D3, both bone parameters and bone formation significantly improved （diabetic C＋ D group）（P 〈 0.05）. These findings suggest that these two hormones might potentially improve various bone properties.

关键词： type 1 diabetes mellitus mandibular bone structure mandibular bone formation micro-computed tomography bone histomorphometry

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A pilot study using lactulose in management of minimal hepatic encephalopathy in children with extrahepatic portal vein obstruction

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World Journal of Pediatrics 2017年第1期13卷 70-75页

作者： Hanaa Mostafa El-Karaksy Omneya Afifi Azza bakry Ann Abdel Kader Noha Saber Department of Pediatrics Kasr Alainy School of MedicineCairo UniversityEgypt Department of Psychiatry Kasr Alainy School of MedicineCairo UniversityEgypt Department of Neurophysiology Kasr Alainy School of MedicineCairo UniversityEgypt

Background:Minimal hepatic encephalopathy(MHE)is not associated with overt neuropsychiatric symptoms but rather with subtle changes in psychometric and/or neurOphysiolOgic *** aimed to diagnose MHE in children with extrahepatic portal vein obstruction fEHPV01 and to evaluate the el№ct of lactulose on ***:A prospective study was carried out on 30 patients with EHPVO(21 males;mean age 10+2.5 years).The study was carried out in the Pediatric Hepatology *** University Pediatric Hospital,Cairo,Egypt,between 2011 and *** patients were subjected to clinical and Iaboratory *** testin2 using the arabic version of Wechsler intelligence *** testing by visual electroencephalogram and P300 event related potentials(ERP).

关键词： children extrahepatic portal vein obstruction lactulose minimal hepatic encephalopathy neuropsychometric tests P300 event-related potential

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Modeling and Simulation for High Energy Sub-Nuclear Interactions Using Evolutionary Computation Technique

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Journal of Applied Mathematics and Physics 2016年第1期4卷 53-65页

作者： mahmoud Y. El-bakry El-Sayed A. El-Dahshan Amr Radi Mohamed Tantawy Moaaz A. Moussa Department of Physics Faculty of Sciences Ain Shams University Cairo Egypt Egyptian E-Learning University Giza Egypt Department of Physics Faculty of Education Ain Shams University Cairo Egypt The British University in Egypt (BUE) Cairo Egypt Buraydah Colleges East Qassim University Buraydah KSA

High energy sub-nuclear interactions are a good tool to dive deeply in the core of the particles to recognize their structures and the forces governed. The current article focuses on using one of the evolutionary computation techniques, the so-called genetic programming (GP), to model the hadron nucleus (h-A) interactions through discovering functions. In this article, GP is used to simulate the rapidity distribution of total charged, positive and negative pions for p--Ar and p--Xe interactions at 200 GeV/c and charged particles for p-pb collision at 5.02 TeV. We have done so many runs to select the best runs of the GP program and finally obtained the rapidity distribution as a function of the lab momentum , mass number (A) and the number of particles per unit solid angle (Y). In all cases studied, we compared our seven discovered functions produced by GP technique with the corresponding experimental data and the excellent matching was so clear.

关键词： Modeling Simulation Evolutionary Computation Genetic Programming Hadron-Nucleus Interaction Rapidity Distribution

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Lpp-Harmonic 1-Forms on δ-Stable Hypersurface in Space Form with Nonnegative Bi-Ricci Curvature

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Advances in Pure Mathematics 2021年第5期11卷 427-439页

作者： bakry Musa Jiancheng Liu College of Mathematics and Statistics Northwest Normal University Lanzhou China

In this paper, we investigate the space of Lp p-harmonic 1-forms on a complete noncompact orientable δ-stable hypersurface Mm that is immersed in space form with nonnegative BiRic curvature. We prove the nonexistenc... 详细信息

关键词： Lp p-Harmonic 1-Forms δ-Stable Hypersurface BiRic Curvature Space Form

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Effect of pulse drip irrigation and mulching systems on yield, quality traits and irrigation water use efficiency of soybean under sandy soil conditions

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Agricultural Sciences 2013年第5期4卷 249-261页

作者： Abdelraouf Ramadan Eid bakry Ahmed bakry Moamen Hamed Taha Agronomy Department Faculty of Agriculture Cairo University Giza Egypt Agronomy Department National Research Center Giza Egypt Water Relations and Field Irrigation Department National Research Center Giza Egypt

Two field experiments were carried out during growing seasons 2010 and 2011, it executed in research farm of national research center in Nubaryia region, Egypt to study the effect of pulse drip irrigation and mulching systems for saving water, increasing and improving yield of soybean. The study factors were, pulse drip irrigation technology (adding of daily water requirements on 4 times, 8 times, 12 times compared with adding of daily water requirements on 1 time) and mulching systems (covering the soil with black plastic mulch “BPM”, rice straw mulch “RSM” and the control treatment was soil surface without mulch “WM”). The following parameters were studied to evaluate the effect of pulse drip irrigation and mulching systems: 1) Soil moisture distribution in root zone, 2) Growth characters of soybean plant, 3) Yield of soybean, 4) Irrigation water use efficiency of soybean “IWUE soybean”, and 5) Oil content and oil yield, 6) Protein content and protein yield, 7) Economical parameter. According to the economical view and the results of statistical analysis for effect of pulse drip irrigation and mulching systems on yield, quality traits and IWUE soybean indicated that, applying the irrigation requirements on 8 pulses/day with using BPM is the best conditions because under these conditions was occurred the highest value of yield, quality traits and IWUE soybean and there was significant deference between this case and other treatments. Where, pulse irrigation technique increase from water movement in horizontal direction than vertical direction hence improve from soil moisture distribution and wetted soil volume in root zone and using BPM decrease from evaporation process rate from soil surface hence decreasing of salts accumulation in addition to decreasing of weed growth in the root zone. All traits at AIR on 12 pulses/ day are decreased by increasing of pulses, this may be due to irrigation water was very small with every pulse at AIR on 12 pulses/day in addition

关键词： Pulse Irrigation Mulching Systems Water Use Efficiency Soybean Oil and Protein

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