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Cross-Layer Design for EH Systems with Finite Buffer Constraints

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Computers, Materials & Continua 2021年第10期69卷 129-144页

作者： mohammed Baljon Shailendra Mishra Department of Computer Engineering College of Computer and Information Sciences Majmaah UniversityMajmaah11952Saudi Arabia

Energy harvesting(EH)technology in wireless communication is a promising approach to extend the lifetime of future wireless networks.A cross-layer optimal adaptation policy for a point-to-point energy harvesting(EH)wireless communication system with finite buffer constraints over a Rayleigh fading channel based on a Semi-Markov Decision Process(SMDP)is *** adaptation strategies in the literature are based on channeldependent ***,besides considering the channel,the state of the energy capacitor and the data buffer are also involved when proposing a dynamic modulation policy for EH wireless *** the channeldependent policy,which is a physical layer-based optimization,the proposed cross-layer dynamic modulation policy is a guarantee to meet the overflow requirements of the upper layer by maximizing the throughput while optimizing the transmission power and minimizing the dropping *** on the states of the channel conditions,data buffer,and energy capacitor,the scheduler selects a particular action corresponding to the selected modulation ***,the packets are modulated into symbols according to the selected modulation type to be ready for transmission over the Rayleigh fading *** are used to test the performance of the proposed cross-layer policy scheme,which shows that it significantly outperforms the physical layer channel-dependent policy scheme in terms of throughput only.

关键词： Energy harvesting technology cross-layer design delay tolerant network fading channels resource allocation telecommunication power management telecommunication scheduling

An Improved Method for Extractive Based Opinion Summarization Using Opinion Mining

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Computer Systems Science & Engineering 2022年第8期42卷 779-794页

作者： Surbhi Bhatia mohammed AlOjail Department of Information Systems College of Computer Sciences and Information TechnologyKing Faisal UniversitySaudi Arabia

Opinion summarization recapitulates the opinions about a common topic *** primary motive of summarization is to preserve the properties of the text and is shortened in a way with no loss in the semantics of the *** need of automatic summarization efficiently resulted in increased interest among communities of natural Language Processing and Text *** paper emphasis on building an extractive summarization system combining the features of principal component analysis for dimensionality reduction and bidirectional Recurrent neural networks and Long Short-Term Memory(Rnn-LSTM)deep learning model for short and exact synopsis using seq2seq *** presents a paradigm shift with regard to the way extractive summaries are *** algorithms for word extraction using assertions are *** semantic framework is well-grounded in this research facilitating the correct decision making process after reviewing huge amount of online reviews,considering all its important features into *** advantages of the proposed solution provides greater computational efficiency,better inferences from social media,data understanding,robustness and handling sparse *** on the different datasets also outperforms the previous researches and the accuracy is claimed to achieve more than the baselines,showing the efficiency and the novelty in the research *** comparisons are done by calculating accuracy with different baselines using Rouge tool.

关键词： Sentiment analysis data mining text summarization opinion mining principal component analysis

Deriving the new Traveling Wave Solutions for the nonlinear Dispersive Equation,KdV-ZK Equation and Complex Coupled Kd V System Using Extended Simplest Equation Method

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Communications in Theoretical Physics 2015年第10期64卷 379-390页

作者： mohammed K.Elboree Mathematics Department Faculty of Science South Valley University

In this paper, we investigate the traveling wave solutions for the nonlinear dispersive equation, Korteweg-de Vries Zakharov–Kuznetsov(Kd V-ZK) equation and complex coupled Kd V system by using extended simplest equation method, and then derive the hyperbolic function solutions include soliton solutions, trigonometric function solutions include periodic solutions with special values for double parameters and rational solutions. The properties of such solutions are shown by figures. The results show that this method is an effective and a powerful tool for handling the solutions of nonlinear partial differential equations(nLEEs) in mathematical physics.

关键词： extended simplest equation nonlinear dispersive eq

Examining the Impacts of Key Influencers on Community Development

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Computers, Materials & Continua 2019年第7期61卷 1-10页

作者： Di Shang mohammed Ghriga Department of Technology Innovation and Computer ScienceLong Island University1 University PlazaBrooklynNY 11201USA

In this research,we aim to identify and investigate the impacts of key influencers on community formations and *** assess the impacts of key influencers by analyzing the activities and structure of the social media presence of a local *** of our analysis show that key influencers play important roles in connecting the community,transferring information,and improving overall sentiment of the community *** findings suggest that community practitioners can apply social network analysis to identify value-added influencers and discover strategies for improving the community and keeping leadership roles.

关键词： Social networks network analysis community development network graph influencer analysis

Approximate Solution of the Kuramoto-Shivashinsky Equation on an Unbounded Domain

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Chinese Annals of Mathematics,Series B 2018年第1期39卷 145-162页

作者： Wael W.mohammed Department of Mathematics Faculty of ScienceMansoura University Department of Mathematics Faculty of ScienceHail University

The main goal of this paper is to approximate the Kuramoto-Shivashinsky(K-S for short) equation on an unbounded domain near a change of bifurcation,where a band of dominant pattern is changing *** leads to a slow modulation of the dominant *** we consider PDEs with quadratic nonlinearities and derive rigorously the modulation equation,which is called the Ginzburg-Landau(G-L for short) equation,for the amplitudes of the dominating modes.

关键词： Multi-scale analysis Modulation equation Kuramoto-Shivashinsky equation Ginzburg-Landau equation

Effect of Plant Density on Wild Oat Competition with Competitive and non-Competitive Wheat Cultivars

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Agricultural Sciences in China 2011年第10期10卷 1554-1561页

作者： Mohammad Armin.mohammed Asghripour Department of Agronomy Sabzevar Branch Islamic Azad University Department of Agriculture University of Zabol

Wild oat （Avena ludoviciana） is one of the worst weeds in wheat fields. The effect of wheat density on wild oat competition with more or less competitive wheat cultivars （Triticum aestivum） was investigated at the Experimental Farm of Plant Pests and Diseases Research Institute, Karaj, Iran. The experiment was established as a factorial combination of wheat varieties Roshan as non-competitive and niknejad as competitive; three wheat densities （recommended density, recommended＋25%, and recommended＋50%, corresponding respectively with 300, 375, and 450 plants m-2 for Roshan and 400, 500, and 600 plants m-2 for niknejad） and four wild oat densities （0, 25, 50, and 75 plants m-2） were selected for this experiment. Hyperbolic equations were used to describe relationship between yield and weed density. Increase in wheat density reduced wild oat biomass. Maximum wild oat biomass was achieved at the highest density of the wild oat together with the lowest wheat density. The results showed that higher densities of wheat are able to suppress wild oat dry matter production. Inter-specific competition in niknejad was 1.7 times more than that in Roshan. Maximum yields of niknejad and Roshan in the presence of wild oat were obtained at recommended density＋25% and recommended density, respectively. Increase in wheat density leads to a decrease in wheat yield due to an increase in intra-specific competition. Increase in wild oat density results in the reduction of wheat yield through decrease in fertile tiller per plant and spike m-2.

关键词： competition plant density wheat wild oat yield

Comparative studies on numerical sensitivity of different scenarios of enhanced oil recovery by water-alternating-gas(CO_(2))injection

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Petroleum Research 2023年第4期8卷 505-513页

作者： Saddam mohammed mohammed nasser Achinta Bera Vivek Ramalingam School of Energy Technology Pandit Deendayal Energy UniversityGandhinagarGujarat382007India

Enhanced oil recovery by CO_(2) injection technology(CO_(2)-EOR)plays a crucial role in enhancing oil production and the permanent sequestration of anthropogenic CO_(2) in depleted oil ***,the availability of CO_(2) in oil field locations and its mobility in contrast with reservoir fluids are prime challenges in CO_(2)-*** cost of CO_(2) and its availability at the oil fields has prompted investigations on efficient injection of CO_(2) at the fields to achieve the best sweep efficiency *** strategies such as water-alternating-gas(WAG),simultaneous vertical and horizontal WAG,simultaneous water injection into the aquifer and vertical WAG,water and gas injection simultaneously but separately(SS-WAG),and water and gas injection simultaneously but not separately(SnS-WAG)play a significant role,as well as the purity of CO_(2).In this work,the significance of the above criteria was investigated indi-vidually and in *** coupled sequence of injection rate,soaking time,WAG ratio,and purity of injected CO_(2) for enhancement of oil production were delineated.A realistic reservoir simulation model conceptualizing the CO_(2)-EOR system with five spot injection patterns was developed by the company *** history-matched model that was developed was used to investigate the sensitivity of the coupled effects to the criteria listed above on oil *** investigations quantitatively emphasized that purity and soaking time of CO_(2) have an inverse effect in the oil production rate and that SnS-WAG resulted in a better oil production rate than SS-WAG.

关键词： Water-alternating-gas Enhanced oil recovery Sensitivityanalysis Modelingand simulation Simultaneouslybut not separately water-alternating-gas(SS-WAG) Simultaneously pressure maintenance and WAG

Identification of Tuberculosis and Coronavirus Patients Using Hybrid Deep Learning Models

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Computers, Materials & Continua 2023年第7期76卷 881-894页

作者： mohammed A.Al Ghamdi Computer Science Department Umm Al-Qura UniversityMakkah City24243Saudi Arabia

Considerable resources,technology,and efforts are being utilized worldwide to eradicate the *** certain measures taken to prevent the further spread of the disease have been successful,efforts to completely wipe out the coronavirus have been *** patients have symptoms similar to those of chest Tuberculosis(TB)or pneumonia *** tuberculosis and coronavirus are similar because both diseases affect the lungs,cause coughing and produce an irregular respiratory *** diseases can be confirmed through X-ray *** is a difficult task to diagnose COVID-19,as coronavirus testing kits are neither excessively available nor very *** addition,specially trained staff and specialized equipment in medical laboratories are needed to carry out a coronavirus ***,most of the staff is not fully trained,and several laboratories do not have special equipment to perform a coronavirus ***,hospitals and medical staff are under stress to meet necessary *** of the time,these staffs confuse the tuberculosis or pneumonia patient with a coronavirus patient,as these patients present similar *** meet the above challenges,a comprehensive solution based on a deep learning model has been proposed to distinguish COVID-19 patients from either tuberculosis patients or healthy *** framework contains a fusion of Visual Geometry Group from Oxford(VGG16)and Residual network(Resnet18)algorithms as VGG16 contains robust convolutional layers,and Resnet18 is a good *** proposed model outperforms other machine learning and deep learning models as more than 94%accuracy for multiclass identification has been achieved.

关键词： Tuberculosis coronavirus X-ray deep learning VGG16 and Resnet18

Blockchain Consistency Check Protocol for Improved Reliability

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Computer Systems Science & Engineering 2021年第2期36卷 281-292页

作者： mohammed Alwabel Youngmi Kwon Department of Radio and Information Communications Engineering Chungnam National UniversityDaejeonKorea

Blockchain is a technology that provides security features that can be used for more than just *** achieves security by saving the information of one block in the next *** the information of one block will require changes to all the next block in order for that change to take *** makes it unfeasible for such an attack to ***,the structure of how blockchain works makes the last block always vulnerable for attacks,given that its information is not saved yet in any *** allows malicious node to change the information of the last block and generate a new block and broadcast it to the *** that the nodes always follow the longer chain wins rule,the malicious node will win given that it has the longest chain in the *** paper suggests a solution to this issue by making the nodes send consistency check messages before broadcasting a *** the nodes manage to successfully verify that the node that generated a new block hasn’t tampered with the blockchain than that block will be *** results of the simulation show suggested protocol provided better security compared to the regular blockchain.

关键词： Blockchain security forking blockchain consistency check(BCC) protocol