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modern comprehensive study of the W Uma system TY Boo

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Research in Astronomy and Astrophysics 2015年第4期15卷 501-516页

作者： magdy m.Elkhateeb mohamed Ibrahim Nouh Abdel-Naby S.saad Astronomy Department National Research Institute of Astronomy and Geophysics Physics Department College of ScienceNorthern Border University mathematics Department Preparatory YearQassim University

New three color light curves of TY Boo were acquired during five nights from February to may 2006 in the BVR bandpass using a 50-cm F/8.4 Ritchey- Chr6tien telescope （Ba50） at the Baja Astronomical Observatory （Hungary）, with a 512×512 Apogee AP-7 CCD camera. A photometric solution of these light curves was obtained by means of the Wilson-Devinney code. The results showed that the less massive component is hotter than the more massive one, and the temperature difference between the components is △T -249 K. Long term investigation of the system based on all available data shows two stages of increase and a similar trend for decrease, which appears to be periodic behavior. A set of new light elements yields a new period （P = 0.3171506d） and shows a periodic decrease with the rate dP/dE -- 5.858×10^-12 d cycle-1, 6.742×10^-9 d yr-1 or 0.058 s century-1. The evolutionary status of the system is discussed.

关键词： binaries: eclipsing -- stars: evolution

Sensitivity-based upscaling for history matching of reservoir models

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Petroleum Science 2016年第3期13卷 517-531页

作者： saad mehmood Abeeb A.Awotunde United Energy Pakistan Bahria Complex-l M.T. Khan Road Karachi 74000 Sindh Pakistan Department of Petroleum Engineering King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Simulation of reservoir flow processes at the finest scale is computationally expensive and in some cases ***,upscaling of several fine-scale grid blocks into fewer coarse-scale grids has become an integral part of reservoir simulation for most *** is because as the number of grid blocks increases,the number of flow equations increases and this increases,in large proportion,the time required for solving flow *** we can adopt parallel computation to share the load,a large number of grid blocks still pose significant computational ***,upscaling acts as a bridge between the reservoir scale and the simulation *** as the upscaling ratio is increased,the accuracy of the numerical simulation is reduced;hence,there is a need to keep a balance between the *** this work,we present a sensitivity-based upscaling technique that is applicable during history *** method involves partial homogenization of the reservoir model based on the model reduction pattern obtained from analysis of the sensitivity *** technique is based on wavelet transformation and reduction of the data and model spaces as presented in the 2Dwp-wk *** the 2Dwp-wk approach,a set of wavelets of measured data is first selected and then a reduced model space composed of important wavelets is gradually built during the first few iterations of nonlinear *** building of the reduced model space is done by thresholding the full wavelet sensitivity *** pattern of permeability distribution in the reservoir resulting from the thresholding of the full wavelet sensitivity matrix is used to determine the neighboring grids that are *** essence,neighboring grid blocks having the same permeability values due to model space reduction are combined into a single grid block in the simulation model,thus integrating upscaling with wavelet multiscale inverse *** apply the method to estimate the parameters

关键词： Upscaling Inverse analysis History matching Sensitivity Wavelets

Efficient model for Emergency Departments:Real Case Study

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Computers, materials & Continua 2022年第2期70卷 4053-4073页

作者： mohamed Abdel-Basset Abduallah Gamal Rehab mohamed mohamed Abouhawwash Abdulwahab Almutairi osama m.ELkomy Faculty of Computers and Informatics Zagazig UniversityZagazig44519Egypt Department of mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast LansingMI48824USA School of mathematics Unaizah College of Sciences and ArtsQassim University51452Saudi Arabia

There are several challenges that hospitals are facing according to the emergency department(ED).Themain two issues are department capacity and lead ***,the lack of consensus on performance criteria to evaluateEDincreases the complication of this ***,this study aims to evaluate the efficiency of the emergency department in 20 Egyptian hospitals(12 private and 8 general hospitals)based on 13 performance *** research suggests an integrated evaluation model assess ED under a framework of plithogenic *** proposed framework addressed uncertainty and ambiguity in information with an efficient manner via presenting the evaluation expression by plithogenic *** Envelopment Analysis(DEA)technique is used in order to measure the efficiency of the emergency department of 20 hospitals according to the number of treated patients and effect on patient’s life quality based on 11 *** the Analytic Hierarchy Process(AHP),the weight of efficiency factors will be measured based on neutrosophic linguistic scale pairwise *** operations provide more accurate aggregation result according to contradiction degree between criteria *** results show that ten of the hospitals are providing efficient service in their emergency department,while the other ten are less *** analysis of the results shows that 58%of private hospitals emergency department is operating efficiently,while the efficient general hospitals represent 38%.

关键词： Emergency department plithogenic set data envelopment analysis analytic hierarchy process

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

Thyme oil and thymol abrogate doxorubicin-induced nephrotoxicity and cardiotoxicity in Wistar rats via repression of oxidative stress and enhancement of antioxidant defense mechanisms

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BIOCELL 2020年第1期44卷 41-53页

作者： osama m.AHmED Sanaa R.GALALY mai RASLAN mennah-Allah m.A.mOSTAFA Physiology Division Zoology DepartmentFaculty of ScienceBeni-Suef UniversityP.O.Box 62521Beni-SuefEgypt Cell Biology Histology and Genetics DivisionZoology DepartmentFaculty of ScienceBeni-Suef UniversityP.O.Box 62521Beni-SuefEgypt Biotechnology and Life Sciences Department Faculty of Postgraduate Studies for Advanced SciencesBeni-Suef UniversityBeni-SuefB.O.Box 62511Egypt

This study aimed to assess the preventive effects of thyme oil and thymol on doxorubicin(DOX)-induced renotoxicity,cardiotoxicity,and oxidative stress in Wistar *** oil was subjected to GC-mS analysis,which indicated that thymol was the major constituent representing 33.896%.Rats intraperitoneally injected with DOX at a dose of 2 mg/kg b.w./one per week for 7 weeks were co-treated with thyme oil and its major constituent,thymol,at doses 250 and 100 mg/kg b.w./every other day,respectively,by oral gavage for the same *** oil and thymol markedly ameliorated the raised levels of serum urea,uric acid,and creatinine in DOX-administered *** also reduced the elevated activities of serum CK-mB and *** oil was more effective than thymol in decreasing the elevated serum creatinine level and serum CK-mB activity in DOX-administered rats,thereby reflecting its more potent effect on kidney and heart *** peroxidation significantly decreased while GSH level and GST and GPx activities significantly increased in kidney and heart of DOX-administered rats treated with thyme oil and *** DOX-induced perturbed kidney histological changes including congestion of glomerulus tuft,inflammatory cells infiltration,protein cast in lumina of the renal tubule,and thickening of the parietal layer of Bowman’s capsule were remarkably ameliorated as a result of treatment with thyme oil and thymol;thyme oil was more *** addition,DOX-induced deleterious heart histological alterations,including intramuscular infiltration of inflammatory cells,focal necrosis of cardiac myocytes,and edema,were remarkably reduced by treatment with thyme oil and ***,it can be concluded that DOX could induce marked toxicity in kidney and heart,and the treatment with thyme oil or thymol produced potential improvement of kidney and heart function and histological integrity via repression of oxidative stress and enhancement of antioxidant defense mechanisms.

关键词： Doxorubicin Nephrotoxicity Cardiotoxicity Oxidative stress Thyme oil Thymol

Effect of treating chronic hepatitis C with direct-acting antivirals on extrahepatic cutaneous manifestations

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World Journal of Hepatology 2020年第10期12卷 841-849页

作者： mohamed El Kassas osama mO Hegazy Eman m Salah Department of Endemic medicine Faculty of MedicineHelwan UniversityCairo 11795Egypt Department of Dermatology Venereology and AndrologyFaculty of MedicineHelwan UniversityCairo 11795Egypt

BACKGROUND Hepatitis C virus(HCV)is a disease with a significant global impact,affecting approximately 2%-2.5%of the world’s *** direct-acting antivirals(DAAs)have been introduced over the past few years with great success in viral *** association of chronic HCV infection with a wide spectrum of cutaneous manifestations has been widely reported in the *** To assess the effect of treating HCV with DAAs on the extrahepatic cutaneous manifestations of *** This prospective observational study included 1039 HCV positive Egyptian patients who were eligible to receive DAAs.A total of 30 patients were diagnosed with extrahepatic cutaneous manifestations and fulfilled the inclusion criteria of the *** these patients,6 had classic lichen planus,8 were diagnosed with psoriasis vulgaris and 16 had *** patients received DAAs from October 2018 to July 2019 in the form of a three-month course of sofosbuvir/daclatasvir *** with lichen planus or psoriasis were dermoscopically evaluated before treatment and 6 mo after treatment,while patients with hepatic pruritus were assessed using the 12-Item Pruritus Severity Scale over the same *** All patients with psoriasis showed significant improvement in all psoriatic plaques,and all patients with hepatic pruritus scored 0 on the 12-Item Pruritus Severity Scale indicating total improvement of *** addition,four of six patients with lichen planus showed complete *** Treatment of HCV with DAAs was significantly effective in improving virusrelated extrahepatic cutaneous manifestations.

关键词： Directly acting antivirals Extrahepatic manifestations Hepatitis C virus Lichen planus Pruritus Cutaneous manifestations

Visual and refractive outcomes of posterior chamber phakic IOL in stable keratoconus

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International Journal of Ophthalmology(English edition) 2019年第5期12卷 840-843页

作者： Sherif H Emerah moataz m Sabry Hisham A saad Waleed A Ghobashy Ophthalmology Department Research Institute of Ophthalmology magrabi Eye Hospital Ophthalmology Department Tanta University Ophthalmology Department Suez Canal University

We evaluated the visual and refractive outcomes after phakic visian toric implantable collamer lens(ICL) insertion in stable keratoconus(KC). This retrospective study investigated toric ICL implantation in 14 eyes of 8 patients with stable KC. After 6 mo, the mean uncorrected distance visual acuity improved significantly from 0.77 to 0.15 logmAR. The mean best corrected distance visual acuity(BCDVA) improved from 0.18±0.1 to 0.15±0.1 logmAR. Fifty percent of eyes maintained their preoperative BCDVA; 42.8% gained one line. There was no statistical difference in high order or coma aberration. The mean refractive manifest spherical equivalent(mSE), mean refractive manifest spherical error, mean manifest astigmatism decreased significantly postoperatively. At 6 mo postoperatively, our achieved mean spherical equivalent was approximately 74%. No intraoperative or postoperative complications occurred. Toric ICL implantation was effective, predictable and safe to correct refractive error and improve visual acuity in patients with stable KC.

关键词： coma keratoconus lens implantation intraocular

Realistic Smile Expression Recognition Approach Using Ensemble Classifier with Enhanced Bagging

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Computers, materials & Continua 2022年第2期70卷 2453-2469页

作者： Oday A.Hassen Nur Azman Abu Zaheera Zainal Abidin saad m.Darwish University Technical malaysia melaka Department of Information TechnologyMelaka76100Malaysia Institute of Graduate Studies and Research University of AlexandriaAlexandriaEl Shatby21526Egypt

A robust smile recognition system could be widely used for many real-world *** of a facial smile in an unconstrained setting is difficult due to the invertible and wide variety in face *** this paper,an adaptive model for smile expression classification is suggested that integrates a fast features extraction algorithm and cascade *** model takes advantage of the intrinsic association between face detection,smile,and other face features to alleviate the over-fitting issue on the limited training set and increase classification *** features are extracted taking into account to exclude any unnecessary coefficients in the feature vector;thereby enhancing the discriminatory capacity of the extracted features and reducing the computational ***,the main causes of error in learning are due to noise,bias,and *** helps to minimize these *** of multiple classifiers decrease variance,especially in the case of unstable classifiers,and may produce a more reliable classification than a single ***,a shortcoming of bagging as the best ensemble classifier is its random selection,where the classification performance relies on the chance to pick an appropriate subset of training *** suggested model employs a modified form of bagging while creating training sets to deal with this challenge(error-based bootstrapping).The experimental results for smile classification on the JAFFE,CK+,and CK+48 benchmark datasets show the feasibility of our proposed model.

关键词： Ensemble classifier smile expression detection features extraction

On modules Satisfying S-Noetherian Spectrum Condition

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Communications in mathematics and Statistics 2023年第3期11卷 649-662页

作者： mehmetÖzen osama A.Naji Ünsal Tekir Suat Koç Department of mathematics Sakarya UniversitySakaryaTurkey Department of mathematics Marmara UniversityIstanbulTurkey

Let R be a commutative ring having nonzero identity and m be a unital *** that S⊆R is a multiplicatively closed subset of ***,m satisﬁes S-Noetherian spectrum condition if for each submodule N of m,there exist s∈S and aﬁnitely generated submodule F⊆N such that sN⊆radm(F),where radm(F)is the prime radical of F in the sense(mcCasland and moore in Commun Algebra 19(5):1327–1341,1991).Besides giving many properties and characterizations of S-Noetherian spectrum condition,we prove an analogous result to Cohen’s theorem for modules satisfying S-Noetherian spectrum ***,we characterize modules having Noetherian spectrum in terms of modules satisfying the S-Noetherian spectrum condition.

关键词： Noetherian modules S-Noetherian modules Noetherian spectrum S-Noetherian spectrum condition