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Ground state parameters,electronic properties and elastic constants of CaMg3:DFT study

Journal of Magnesium and Alloys 2020年第4期8卷 1166-1175页

作者： H.Rekab-Djabri manal M.Abdus Salam S.Daoud M.Drief Y.Guermit S.Louhibi-Fasla Laboratory of Micro and Nanophysics(LaMiN) National Polytechnic School OranENPO-MABP 1523El M'Naouer31000 OranAlgeria Faculty of Nature and Life Sciences and Earth Sciences Akli Mohand-Oulhadj University10000 BouiraAlgeria Department of Applied Physics Tafila Technical UniversityTafila 66110Jordan Laboratory of Materials and Electronic Systems Mohamed El Bachir El Ibrahimi University of Bordj Bou ArreridjBordj BouArreridj 34000Algeria Laboratoire des Materiaux Magnetiques Departement de PhysiqueFaculte des SciencesUniversite Djilali LIABES de Sidi-Bel-AhbesSidi Bel Abbes 22000Algeria

The present study aims to investigate the equation of state(EOS)parameters of CaMg3 in aReCh(D09),AIFR(DO3),CU3A11(LI2)and CuTi3(L60)structures,using full potential linear muffin-tin orbitals(FP-LMTO)approach based on the density functional theory(DFT).The local density approximation(LDA)and the generalized gradient approximation(GGA)were both applied for the exchange-correlation potential *** calculated equation of slate parameters at equilibrium,in general,agreed well with the available data of the *** calculations showed that under compression CaMg3 transforms from DO3 to DO9 at about 29.96GPa,and 25.1 GPa using LDA and GGA,*** elastic constants C,y,aggregate moduli,Vickers hardness,sound velocity,and Debye temperature of CaMg3 in D03 structure were also reported,discussed and *** LDA(GGA),the calculated values of Hv andθD were found at around 5.80GPa(5.93GPa)and 393.44 K(389.91 K),*** band structure,total density of states(TDOS)as well as the partial density of states(PDOS)have been also *** electronic band structure confirms the metallic behavior of CaMg3 in DO3 phase,the valence bands are dominated by the maximum contribution of‘d’like states of Ca in the energy ranging from 2 to 3 eV for GGA,and from 4.5 to 5 eV for LDA,respectively.

关键词： CaMg3 compound Electronic properties Phase transition Elastic constants FP-LMTO

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Immediate and delayed micro-tensile bond strength of different luting resin cements to different regional dentin

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The Journal of Biomedical Research 2013年第2期27卷 151-158页

作者： Abdelraheem Mohamed Ali Ibrahim Mohamed Hamouda Mohamed Hamed Ghazy manal Mohamed Abo-Madina Department of Conservative Dentistry Faculty of Dentistry Mansoura University Department of Dental Biomaterials Faculty of Dentistry Mansoura University Department of Conservative Dentistry Faculty of Dentistry Umm Al Qura University Crown & Bridge Department of Conservative Dentistry Faculty of Dentistry Mansoura University

We sought to evaluate immediate and delayed micro-tensile bond strength of Panavia F2.0 and Multilink Sprint resin cement to superficial, deep and cervical dentin. Thirty-six freshly extracted non-carious human molars were sectioned in the mesiodistal direction to expose three different dentin regions including superficial dentin （1 mm below the dentine-enamel junction）, deep dentin （1 mm above the highest pulp horn） and cervical dentin （0.5 mm above the cemento-enamel junction and 0.5 mm below the dentine-enamel junction）. Resin cements were applied on dentin surfaces and composite blocks were luted under constant seating pressure. Each group was divided into three subgroups according to time intervals. Specimens were sectioned to obtain sticks of 1 mm2 in diameter and subjected to microtensile bond strength testing at a cross head speed of 1 mrn/min. Both resin cements showed higher micro-tensile bond strength to superficial dentin than that to deep or cervical dentin （P 〈 0.001）. Micro-ten- sile bond strengths of Panavia F2.0 were higher than those of Multilink Sprint at different dentin regions （P 〈 0.001）. Immediate ＂micro-tensile bond strengths were higher than those of delayed micro-tensile bond strengths for both resin cements （P 〈 0.001）. It was concluded that resin cements with different chemical formulations and applications yield significantly different micro-tensile bond strengths to different dentin regions.

关键词： immediate and delayed micro-tensile bond strength luting resin cements regional dentin

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Optimal Deep Learning Based Ransomware Detection and Classification in the Internet of Things Environment

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Computer Systems Science & Engineering 2023年第9期46卷 3087-3102页

作者： manal Abdullah Alohali Muna Elsadig Fahd N.Al-Wesabi Mesfer Al Duhayyim Anwer Mustafa Hilal Abdelwahed Motwakel Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Computer Science College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia

With the advent of the Internet of Things(IoT),several devices like sensors nowadays can interact and easily share *** the IoT model is prone to security concerns as several attackers try to hit the network and make it *** such scenarios,security concern is the most *** models were intended to address these security problems;still,several emergent variants of botnet attacks like Bashlite,Mirai,and Persirai use security *** malware classification and detection in the IoT model is still a problem,as the adversary reliably generates a new variant of IoT malware and actively searches for compromise on the victim *** article develops a Sine Cosine Algorithm with Deep Learning based Ransomware Detection and Classification(SCADL-RWDC)method in an IoT *** the presented SCADL-RWDCtechnique,the major intention exists in recognizing and classifying ransomware attacks in the IoT *** SCADL-RWDC technique uses the SCA feature selection(SCA-FS)model to improve the detection ***,the SCADL-RWDC technique exploits the hybrid grey wolf optimizer(HGWO)with a gated recurrent unit(GRU)model for ransomware classification.A widespread experimental analysis is performed to exhibit the enhanced ransomware detection outcomes of the SCADL-RWDC *** comparison study reported the enhancement of the SCADL-RWDC technique over other models.

关键词： Security IoT network ransomware attack deep learning metaheuristics

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Network Intrusion Detection Based on Feature Selection and Hybrid Metaheuristic Optimization

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Computers, Materials & Continua 2023年第2期74卷 2677-2693页

作者： Reem Alkanhel El-Sayed M.El-kenawy Abdelaziz A.Abdelhamid Abdelhameed Ibrahim manal Abdullah Alohali Mostafa Abotaleb Doaa Sami Khafaga Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Communications and Electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Department of Computer Science Faculty of Computer and Information SciencesAin Shams UniversityCairo11566Egypt Department of Computer Science College of Computing and Information TechnologyShaqra University11961Saudi Arabia Computer Engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansoura35516Egypt Information Systems Department College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of System Programming South Ural State UniversityChelyabinsk454080Russia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia

Applications of internet-of-things(IoT)are increasingly being used in many facets of our daily life,which results in an enormous volume of *** computing and fog computing,two of the most common technologies used in IoT applications,have led to major security *** are on the rise as a result of the usage of these technologies since present security measures are *** artificial intelligence(AI)based security solutions,such as intrusion detection systems(IDS),have been proposed in recent *** technologies that require data preprocessing and machine learning algorithm-performance augmentation require the use of feature selection(FS)techniques to increase classification accuracy by minimizing the number of features *** the other hand,metaheuristic optimization algorithms have been widely used in feature selection in recent *** this paper,we proposed a hybrid optimization algorithm for feature selection in *** proposed algorithm is based on grey wolf(GW),and dipper throated optimization(DTO)algorithms and is referred to as *** proposed algorithm has a better balance between the exploration and exploitation steps of the optimization process and thus could achieve better *** the employed IoT-IDS dataset,the performance of the proposed GWDTO algorithm was assessed using a set of evaluation metrics and compared to other optimization approaches in 2678 CMC,2023,vol.74,no.2 the literature to validate its *** addition,a statistical analysis is performed to assess the stability and effectiveness of the proposed *** results confirmed the superiority of the proposed approach in boosting the classification accuracy of the intrusion in IoT-based networks.

关键词： Feature selection grey wolf optimization dipper throated optimization intrusion detection internet-of-things(IoT)

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Managerial Counseling

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Chinese Business Review 2017年第9期16卷 429-435页

作者： Saab Horriyah manal Spanioli West University of Timisoara Timisoara Romania

Management is relatively new science and at the new era, when not all managers of the organizations, the organizations need the services of counselor. The work of the counselors includes recommendations of changes in the organizations. Managerial eonsultancy can be assisted by external managerial counselors and by external managerial counselors. Most of the managers prefer the internal managerial counselors. There are seven steps of the counseling practice： Referral, Entry and Contracting, Problem Definition, Data Collection, Analysis and Diagnosis, Presentation and Recommendations, Agreeing on the Strategy Action, Implementation and Follow Up and Termination. Some of these steps are very important： the most important steps are the referral and the implementation and follow up. The counselors can leave the organization when they feel that the change is assimilated, but many times their work continues for a long time.

关键词： management counselor internal counselor managerial counseling managers manager-counselor relationships

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Intelligent DoS Attack Detection with Congestion Control Technique for VANETs

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Computers, Materials & Continua 2022年第7期72卷 141-156页

作者： R.Gopi Mahantesh Mathapati B.Prasad Sultan Ahmad Fahd N.Al-Wesabi manal Abdullah Alohali Anwer Mustafa Hilal Department of Computer Science and Engineering Dhanalakshmi Srinivasan Engineering CollegePerambalur621212India Department of Computer Science and Engineering RajaRajeswari College of EngineeringBengaluru560074India Department of Information Technology Vignan’s Institute of Information TechnologyVisakhapatnam530049India Department of Computer Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharj11942Saudi Arabia Department of Computer Science College of Science&Arts at MahayilKing Khalid UniversityMuhayel Aseer62529Saudi Arabia&Faculty of Computer and ITSana’a UniversitySana’a15347Yemen Department of Information Systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11564Saudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia

VehicularAd hoc Network(VANET)has become an integral part of Intelligent Transportation Systems(ITS)in today’s *** is a network that can be heavily scaled up with a number of vehicles and road side units that keep fluctuating in real *** is susceptible to security issues,particularly DoS attacks,owing to maximum unpredictability in ***,effective identification and the classification of attacks have become the major requirements for secure data transmission in *** the same time,congestion control is also one of the key research problems in VANET which aims at minimizing the time expended on roads and calculating travel time as well as waiting time at intersections,for a *** this motivation,the current research paper presents an intelligent DoS attack detection with Congestion Control(IDoS-CC)technique for *** presented IDoSCC technique involves two-stage processes namely,Teaching and Learning Based Optimization(TLBO)-based Congestion Control(TLBO-CC)and Gated Recurrent Unit(GRU)-based DoS detection(GRU-DoSD).The goal of IDoS-CC technique is to reduce the level of congestion and detect the attacks that exist in the *** algorithm is also involved in IDoS-CC technique for optimization of the routes taken by vehicles via traffic signals and to minimize the congestion on a particular route instantaneously so as to assure minimal fuel *** is applied to avoid congestion on ***,GRU-DoSD model is employed as a classification model to effectively discriminate the compromised and genuine vehicles in the *** outcomes from a series of simulation analyses highlight the supremacy of the proposed IDoS-CC technique as it reduced the congestion and successfully identified the DoS attacks in network.

关键词： VANET intelligent transportation systems congestion control attack detection dos attack deep learning

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Optimal Deep Belief Network Enabled Cybersecurity Phishing Email Classification

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Computer Systems Science & Engineering 2023年第3期44卷 2701-2713页

作者： Ashit Kumar Dutta T.Meyyappan Basit Qureshi Majed Alsanea Anas Waleed Abulfaraj manal M.Al Faraj Abdul Rahaman Wahab Sait Department of Computer Science and Information Systems College of Applied SciencesAlMaarefa UniversityAd DiriyahRiyadh13713Kingdom of Saudi Arabia Department of Computer Science Alagappa UniversityKaraikudi630003India Department of Computer Science Prince Sultan UniversityRiyadh11586Kingdom of Saudi Arabia Department of Computing Arabeast CollegesRiyadh11583Kingdom of Saudi Arabia Department of Information Systems Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah23613Kingdom of Saudi Arabia Department of Archives and Communication King Faisal UniversityAl AhsaHofuf31982Kingdom of Saudi Arabia

Recently,developments of Internet and cloud technologies have resulted in a considerable rise in utilization of online media for day to day *** results in illegal access to users’private data and compromises *** is a popular attack which tricked the user into accessing malicious data and gaining the *** identification of phishing emails can be treated as an essential process in the domain of *** article focuses on the design of bio-geography based optimization with deep learning for Phishing Email detection and classification(BBODL-PEDC)*** major intention of the BBODL-PEDC model is to distinguish emails between legitimate and *** BBODL-PEDC model initially performs data pre-processing in three levels namely email cleaning,tokenization,and stop word ***,TF-IDF model is applied for the extraction of useful feature ***,optimal deep belief network(DBN)model is used for the email classification and its efficacy can be boosted by the BBO based hyperparameter tuning *** performance validation of the BBODL-PEDC model can be performed using benchmark dataset and the results are assessed under several *** comparative studies reported the superior outcomes of the BBODL-PEDC model over the recent approaches.

关键词： Cybersecurity phishing email data classification deep learning biogeography based optimization hyperparameter tuning

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Significance of serum leptin and adiponectin levels in Egyptian patients with chronic hepatitis C virus associated hepatic steatosis and fibrosis

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World Journal of Hepatology 2013年第2期5卷 74-81页

作者： Tarek E Korah Sawsan El-Sayed Maathir K ElShafie Ghada E Hammoda manal A Safan Department of Internal Medicine Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt Department of Tropical Medicine Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt Department of Medical Biochemistry Faculty of MedicineMenoufiya University32511 MenoufiyaEgypt

AIM:To study serum levels of leptin and adiponectin in patients with chronic hepatitis C virus infection genotype-4(HCV-4) related steatosis and ***:We prospectively studied 45 untreated men with chronic HCV-4,with proven steatosis(group Ⅰ,30 patients),and fibrosis(group Ⅱ,15 patients),on liver *** addition,15 healthy men(group Ⅲ),matched for age,and body mass index were ***,we excluded another five patients with steatohepatitis,and six patients with *** measured total serum leptin and adiponectin levels,as potential predictors for liver steatosis and ***,a correlation between these adipokines and various clinical and laboratory data were *** subjects were selected from Tropical and Internal medicine departments,Menoufiya University Hospital,Menoufiya,Egypt,during the period from February 2010 to August ***:In group Ⅰ,severity of hepatic steatosis was mild,moderate,and severe,in 19 patients(63.5%),8 patients(26.5%),and 3 patients(10%),*** contrast,in group Ⅱ,hepatic fibrosis was found to be in stage 1,2,and 3,in 6 patients(40%),in 6 patients(40%),and in 3 patients(20%),*** comparing group Ⅰ with group Ⅱ,there was a significant decrease in serum adiponectin levels(131.4 ± 7.91 pg/mL vs 436 ± 9.75 pg/mL,P 0.05).However,in the same group,when compared with group Ⅲ,there was a significant increase in serum leptin levels(34.69 ± 7.69 ng/mL vs 10.69 ± 0.84 ng/mL,P < 0.001),while there was a significant decrease in serum adiponectin levels(131.4 ± 7.91 pg/mL vs 342.4 ± 44.48 pg/mL,P < 0.001).In contrast,in group Ⅱ,when compared with group Ⅲ,there was a significant increase in serum leptin and adiponectin levels(35.17 ± 1.06 ng/mL vs 10.69 ± 0.84 ng/mL,P < 0.001,and 436 ± 9.75 pg /mL vs 342.4 ± 44.48 pg/mL,P < 0.05,respectively),while the

关键词： Leptin Adiponectin Hepatitis C virus Hepatic steatosis Hepatic fibrosis

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Omission of the Bladder Flap Suggests Short Term and Long Term Benefits

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Open Journal of Obstetrics and Gynecology 2019年第5期9卷 566-577页

作者： Mona Omar manal A. Farahat Tanta University Faculty of Medicine Department of Obstetrics and Gynecology Tanta Egypt

Background: Cesarean section is now the most common major surgical procedure performed on women worldwide. With the increasing numbers of cesarean sections, there is the need to utilize evidence based techniques to optimize outcomes and minimize complications. We hypothesize that omission of the bladder flap in both primary and repeat cesarean sections will be associated with shorter operating time without a significant increase in intraoperative and postoperative complications. Methods: 550 patients were enrolled in the study. They were randomly allocated in the 2 groups to evaluate the effects of cancelling the bladder dissection. Results: Significant reduction of the total operating time (p = 0.01), skin to delivery time (p = 0.02) and micro-hematuria (p = 0.01) in group with bladder omission. Long term result: Including more bladder adhesion and fibrosis in the cases with bladder dissection. Conclusions: Omission of the bladder dissection achieved short-term advantages as regards reduction of operating time, incision-delivery duration and decreased blood loss as well as long-term effects include different in the bladder adhesion.

关键词： Cesarean Section Bladder Flap Adhesion Operative Time

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Software Project Management Approaches for Global Software Development： A Systematic Mapping Study

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Tsinghua Science and Technology 2018年第6期23卷 690-714页

作者： manal El Bajta Ali Idri Joaquín Nicolás Ros José Luis Fernández-Alemán Juan Manuel Carrillo de Gea Félix García Ambrosio Toval Software Project Management Research Team Ecole Nationale SuperieuredInformatique et d'Analyse des Systemes (ENSIAS)Mohammed V University Rabat 713 Morocco Department of Informaticay Sistemas University of Murcia Murcia 30100 Spain ALARCOS Research GroupDepartment of Information Systems and Technologies University of Castilla-La Mancha (UCLM) Ciudad Real13071 Spain

Global Software Development （GSD） is a well established field of software engineering with the benefits of a global environment. Software Project Management （SPM） plays a key role in the success of GSD. As a result, the need has arisen to study and evaluate the downsides of SPM for GSD, to thereby pave the way for the development of new methods, techniques, and tools with which to tackle them. This paper aims to identify and classify research on SPM approaches for GSD that are available in the literature, to identify their current weaknesses and strengths, and to analyze their applications in industry. We performed a Systematic Mapping Study （SMS） based on six classification criteria. Eighty-four papers were selected and analyzed. The results indicate that interest in SPM for GSD has been increasing since 2006. As a class of approaches, the most frequently reported methods （40%） are those used for coordination, planning, and monitoring, along with estimation techniques that can be used to better match a distributed project. SPM for GSD requires further investigation by researchers and practitioners, particularly with respect to cost and time estimations. These findings will help overcome the challenges that must to be considered in future SPM research for GSD, especially regarding collaboration and time-zone differences.

关键词： Software Project Management (SPM) Global Software Development (GSD) SPM approaches Systematic Mapping Study (SMS)

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