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Mobile Based IoT Solution for Helping Visual Impairment Users

Advances in Internet of Things 2021年第4期11卷 141-152页

作者： hussein abdel-Jaber hussein Albazar Ahmed abdel-Wahab Malak El Amir Areej Alqahtani Mohammed Alobaid Faculty of Computer Studies Arab Open University Riyadh Saudi Arabia Systems and Computers Engineering Faculty of Engineering Al-Azhar University Cairo Egypt

Blind people have many tasks to do in their lives. However, blindness generates challenges for them to perform their tasks. Many blind persons use a traditional stick to move around and to perform their tasks. But the obstacles are not detected in traditional stick, it is ineffective for visually impaired people. The blind person has no idea what kind of objects or obstacles are in front of him/her. The blind person has no idea what size the object is or how far away he or she is from it. It is difficult for a blind person to get around. To assist people with vision impairment by making many of their daily tasks simple, comfortable, and organized, they will be able to recognize anything (an obstacle for blind people). A smart stick with mobile application can be used. One of the solutions is a mobile-based Internet of Things solution, which is a stick intended to assist visually impaired people to navigate more easily. It enables blindness and low vision people to navigate and carry out their daily tasks with ease and comfort. A technologically advanced blind stick that enables visually impaired people to move with ease. This paper proposes a system of software and hardware that helps visually impairment people to find their ways in an easy and comfortable way. The proposed system uses smart stick and mobile application to help blind and visually impaired people to identify objects (such as walls, tables, vehicles, people, etc.) in their ways, this can enable them to avoid these objects. In addition, as a result, the system will notify the user through sound from the smartphone. Finally, if he/she gets lost, he will be able to send an SMS with his/her GPS location.

关键词： IoT Ultrasonic Sensor Obstacle Detection GPS Smart Stick Arduino

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Entropy and Entanglement of Moving Two Atoms in a Squeezed Field via Four-Photon Process

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Natural Science 2014年第7期6卷 487-494页

作者： Sayed abdel-Khalek Saraa hussein Halawani Mathematics Department Faculty of Science Sohag University Sohag Egypt Mathematics Department Faculty of Science Taif University Taif Saudi Arabia

In this paper, the entanglement between two atoms and squeezed field via four photon process is investigated. The dynamical behavior of the entanglement between two atoms and a squeezed field is analyzed. In particular, the effects of the atomic motion, the initial atomic state and the field squeezing are examined. A high amount of entanglement is generated by increasing the field squeezing. Furthermore, we show that a sudden death and sudden birth emerge when the moving atoms are initially prepared in the excited state.

关键词： Von Neumann Entropy Entanglement Sudden Death and Sudden Birth Squeezed State

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FRACTIONAL ORDER BOUNDARY VALUE PROBLEM WITH INTEGRAL BOUNDARY CONDITIONS INVOLVING PETTIS INTEGRAL

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Acta Mathematica Scientia 2011年第2期31卷 661-672页

作者： hussein A.H. Salem Department of Mathematics Faculty of Sciences Alexandria University Department of Mathematics Faculty of Sciences and Arts Taibah University

In this article, we investigate the existence of Pseudo solutions for some fractional order boundary value problem with integral boundary conditions in the Banach space of continuous function equipped with its weak topology. The class of such problems constitute a very interesting and important class of problems. They include two, three, multi-point and nonlocal boundary-value problems as special cases. In our investigation, the right hand side of the above problem is assumed to be Pettis integrable function. To encompass the full scope of this article, we give an example illustrating the main result.

关键词： Fractional calculus Pseudo solution boundary value problem Pettis integrals

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Prevention of peritoneal adhesions:A promising role for gene therapy

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World Journal of Gastroenterology 2011年第46期17卷 5049-5058页

作者： hussein M Atta Department of Surgery Faculty of MedicineMinia University

Adhesions are the most frequent complication of abdominopelvic surgery,yet the extent of the problem,and its serious consequences,has not been adequately *** evolved as a life-saving mecha-nism to limit the spread of intraperitoneal inflammatory *** different pathophysiological mechanisms can independently trigger adhesion *** cell injury and loss during operations,tissue hypoxia and inflammation each promotes adhesion formation separately,and potentiate the effect of each *** have repeatedly demonstrated that interruption of a single pathway does not completely prevent adhesion *** review summarizes the pathogenesis of adhesion formation and the results of single gene therapy *** explores the prom-ising role of combinatorial gene therapy and vector modif ications for the prevention of adhesion formation in order to stimulate new ideas and encourage rapid advancements in this field.

关键词： Peritoneal adhesions Tissue plasminogen activator Gene therapy Plasminogen activator inhibi-tor Tissue inhibitor of metalloproteinase Transforminggrowth factor β

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A Study on the Challenges of Human-Centric Cyber-Security and the Guarantee of Information Quality

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Journal of Information Security（信息安全） 2024年第2期 218页

作者： Mohammed hussein Kurdi Mohsen Denden David Paul

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Low Temperature Reduction of Graphene Oxide Using Hot-plate for Nanocomposites Applications

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Journal of Materials Science & Technology 2016年第5期32卷 411-418页

作者： abdelrahman hussein Sourav Sarkar Byungki Kim School of Mechatronics Engineering Korea University of Technology and Education

A green, easy to reproduce method to obtain thermally reduced graphene oxide （GO） is described, The only requirement is a heating source, like a hot plate, that can reach -225 ℃ without any special setup requirements. Upon addition of graphene oxide, effective reduction could be achieved within 10 s. Starting flake size affects the yield of graphene, final structure and composition. A detailed characterization of the produced graphene using thermal analysis, spectroscopic methods, electron microscopy, X-ray diffraction and atomic force microscopy is presented. Application of the produced graphene as a filler to epoxy resin for mechanical reinforcement is also reported. Smaller flakes （Ds0 = 5.7 μm） showed improved ultimate tensile strength, fracture strain and plane strain fracture toughness compared to larger flakes （Ds0 = 47.9 μm） that showed negative effect. Both flake sizes showed a negligible effect on Young＇s modulus.

关键词： Graphene Nanocomposite Mechanical properties Fracture toughness

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Efficient Channel Estimation Techniques for MIMO Systems with 1-Bit ADC

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China Communications 2020年第5期17卷 50-64页

作者： Hany Shussein Shaimaa hussein Ehab Mahmoud Mohamed Electrical Engineering Dept. College of EngineeringKing Khalid UniversityAbha 61411King of Saudi Arabia Electrical Engineering Dept. Faculty of EngineeringAswan UniversityAswan 81542Egypt Electrical Engineering Dept. College of EngineeringPrince Sattam Bin Abdulaziz UniversityWadi Addwasir 11991King of Saudi Arabia

With a low resolution 1-bit ADC on its receiver(RX) side, MIMO with 1-bit ADC took a considerable step in the fulfillment of the hardware complexity constrains of the internet of things(IoT) PHY layer design. However, applying 1-bit ADC at MIMO RX results in severe nonlinear quantization error. By which, almost all received signal amplitude information is completely distorted. Thus, MIMO channel estimation is considered as a major barrier towards practical realization of 1-bit ADC MIMO system. In this paper, two efficient sparsity-based channel estimation techniques are proposed for 1-bit ADC MIMO systems, namely the low complexity sparsity-based channel estimation(LCSCE), and the iterative adaptive sparsity channel estimation(IASCE). In these techniques, the sparsity of the 1-bit ADC MIMO channel is exploited to propose a new adaptive and iterative compressive sensing(CS) recovery algorithm to handle the 1-bit ADC quantization effect. The proposed algorithms are tested with the state-of-the-art 1-bit ADC MIMO constant envelope modulation(MIMO-CEM). The 1-bit ADC MIMO-CEM system is chosen as it fulfills both energy and hardware complexity constraints of the IoT PHY layer. Simulation results reveal the high effectiveness of the proposed algorithms in terms of spectral efficiency(SE) and computational complexity. The proposed LCSCE reduces the computational complexity of the 1-bit ADC MIMO-CEM channel estimation by 86%, while the IASCE reduces it by 96% compared to the recent techniques of MIMO-CEM channel estimation. Moreover, the proposed LCSCE and IASCE improve the spectrum efficiency by 76 % and 73 %, respectively, compared to the recent techniques.

关键词： channel estimation 1-bit ADC MIMO sparsity recovery compressive sensing Internet of things

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Helicobacter pylori and gastric cancer in the Middle East: A new enigma?

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World Journal of Gastroenterology 2010年第26期16卷 3226-3234页

作者： Nawfal R hussein Institute of Infection Immunity and Inflammation and the Centre for Biomolecular Sciences University of Nottingham Nottingham NG7 2RD United Kingdom

The Middle East is the home of ethnic groups from three main backgrounds: Semitic (Arabs and Jews), Indo-European (Persians and Kurdish) and Turkic (Turkish and Turkmens). Its geographic location, which has been under continuous influences from Asia, Europe and Africa, has made it an ideal site for epidemiological studies on Helicobacter pylori (H. pylori) infection and genotyping. The gastric cancer rate differs in this region from very high in Iran (26.1/105) to low in Israel (12.5/105) and very low in Egypt (3.4/105). Epidemiological studies showed that the prevalence of H. pylori is almost similar in those countries with a high level of infection in childhood. Importantly, the frequency of vacA s1 and m1 regions and cagA+ genotypes were higher in non Semitic populations who inhabit the North than Semitic populations, the inhabitants of Southern parts of the Middle East. H. pylori infection prevalence, distribution pattern of virulence factors, diet and smoking could not have explained the difference in cancer rate. This reflects the multifactorial aetiology of gastric cancer and suggests that H. pylori infection does not always directly correlate with the risk for gastrointestinal disease, such as gastric cancer. Further detailed investigations and international comparative studies of each risk factor needto be performed to investigate whether this represents a true enigma.

关键词： Helicobacter pylori Middle East Gastric cancer dupA cagA vacA iceA

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Energy Guarantee Scheme for Real-time Systems with Energy Harvesting Constraints

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International Journal of Automation and computing 2019年第3期16卷 354-368页

作者： hussein El Ghor Maryline Chetto Laboratory of Embedded and Networked Systems Faculty of TechnologyLebanese UniversityB.P.813 SaidaLebanon Laboratory of Numerical Sciences of Nantes University of Nantes2 Avenue of Professor Jean Rouxel4475 CarquefouFrance

The growth of environmental energy harvesting has been explosive in wireless computing systems especially when replacing or recharging batteries manually is *** work investigates the scheduling of periodic weekly hard real-time tasks under energy *** on this motivation,we proposed a real-time scheduling algorithm,namely energy guarantee dynamic voltage and frequency scaling(EG-DVFS),that utilizes the earliest deadline-harvesting(ED-H)scheduling algorithm combined with dynamic voltage and frequency *** one is qualified as real-time since tasks must satisfy their timing *** assume that the preemptable tasks receive dynamic priorities according to the earliest deadline first(EDF)***-DVFS adjusts the processor's behavior by characterizing the properties of the energy source module,capacity of the stored energy as well as the harvested energy in a future ***,tasks are executed at full processor speed if the amount of energy in the battery is enough to finish its ***,the processor slows down task execution to the lowest possible processor speed while still guaranteeing to meet all the timing ***-DVFS mainly depends on the on-line computation of the slack time and the slack energy with dynamic voltage and frequency selection in order to achieve an improved system *** results show that EG-DVFS can achieve capacity savings up of up to 33%when compared to ED-H.

关键词： Real-time systems energy harvesting embedded systems power management dynamic voltage and frequency selection(DVFS) ED-H scheduler

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Multiclass Classification for Cyber Threats Detection on Twitter

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Computers, Materials & Continua 2023年第12期77卷 3853-3866页

作者： Adnan hussein Abdulwahab Ali Almazroi College of Computer Science and Engineering Department of Computer ScienceAL-Ahgaff UniversityMukallaYemen College of Computing and Information Technology at Khulais Department of Information TechnologyUniversity of JeddahJeddahSaudi Arabia

The advances in technology increase the number of internet systems *** a result,cybersecurity issues have become more *** threats are one of the main problems in the area of ***,detecting cybersecurity threats is not a trivial task and thus is the center of focus for many researchers due to its *** study aims to analyze Twitter data to detect cyber threats using a multiclass classification *** data is passed through different tasks to prepare it for the *** Frequency and Inverse Document Frequency(TFIDF)features are extracted to vectorize the cleaned data and several machine learning algorithms are used to classify the Twitter posts into multiple classes of cyber *** results are evaluated using different metrics including precision,recall,F-score,and *** work contributes to the cyber security research *** experiments revealed the promised results of the analysis using the Random Forest(RF)algorithm with(F-score=81%).This result outperformed the existing studies in the field of cyber threat detection and showed the importance of detecting cyber threats in social media *** is a need for more investigation in the field of multiclass classification to achieve more accurate *** the future,this study suggests applying different data representations for the feature extraction other than TF-IDF such as Word2Vec,and adding a new phase for feature selection to select the optimum features subset to achieve higher accuracy of the detection process.

关键词： Cybersecurity cyber threat detection artificial intelligence machine learning Twitter

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