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Charged Particles Capture Cross-section by a Weakly Charged Schwarzschild Black Hole

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Research in Astronomy and Astrophysics 2024年第8期24卷 141-146页

作者： a.m.al Zahrani A.al-Jama Physics Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

We study the capture cross-section of charged particles by a weakly charged Schwarzschild black *** dependence of the maximum impact parameter for capture on the particle’s energy is investigated numerically for different values of the electromagnetic coupling strength between the particle and the black *** capture cross-section is then *** show that the capture cross-section is independent of the electromagnetic coupling for ultra-relativistic *** astrophysical implications of our results are discussed.

关键词： stars black holes-accretion-accretion disks-black hole physics

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Arrhythmia Prediction on Optimal Features Obtained from the ECG as Images

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Computer Systems Science & Engineering 2023年第1期44卷 129-142页

作者： Fuad a.m.al-Yarimi Department of Computer Science King Khalid UniversityAbhaKingdom of Saudi Arabia

A critical component of dealing with heart disease is real-time identifi-cation,which triggers rapid *** main challenge of real-time identification is illustrated here by the rare occurrence of cardiac *** contribu-tions to cardiac arrhythmia prediction using supervised learning approaches gen-erally involve the use of demographic features(electronic health records),signal features(electrocardiogram features as signals),and temporal *** the signal of the electrical activity of the heartbeat is very sensitive to differences between high and low heartbeats,it is possible to detect some of the irregularities in the early stages of *** paper describes the training of supervised learning using features obtained from electrocardiogram(ECG)image to correct the limitations of arrhythmia prediction by using demographic and electrocardio-graphic signal *** experimental study demonstrates the usefulness of the proposed Arrhythmia Prediction by Supervised Learning(APSL)method,whose features are obtained from the image formats of the electrocardiograms used as input.

关键词： ECG records electrocardiogram morphological features(mF) empirical mode decomposition algorithm HOS

Comparative Evaluation of Data mining algorithms in Breast Cancer

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Computers, materials & Continua 2023年第10期77卷 633-645页

作者： Fuad a.m.al-Yarimi Department of Computer Science King Khalid UniversityMuhayel AseerSaudi Arabia

Unchecked breast cell growth is one of the leading causes of death in women globally and is the cause of breast *** only method to avoid breast cancer-related deaths is through early detection and *** proper classification of malignancies is one of the most significant challenges in the medical *** to their high precision and accuracy,machine learning techniques are extensively employed for identifying and classifying various forms of *** data mining algorithms were studied and implemented by the author of this review and compared them to the present parameters and accuracy of various algorithms for breast cancer diagnosis such that clinicians might use them to accurately detect cancer cells early *** article introduces several techniques,including support vector machine(SVm),K star(K∗)classifier,Additive Regression(AR),Back Propagation Neural Network(BP),and *** algorithms are trained using a set of data that contains tumor parameters from breast cancer *** the results,the author found that Support Vector machine and Bagging had the highest precision and accuracy,***,assess the number of studies that provide machine learning techniques for breast cancer detection.

关键词： many-core multi-core N-conjugate shuffle multi-port content addressable memory interconnection network

Optimal Load Balancing in Cloud Environment of Virtual machines

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Computer Systems Science & Engineering 2022年第6期41卷 919-932页

作者： Fuad a.m.al-Yarimi Sami althahabi majdy mohammed Eltayeb Department of Computer Science King Khalid UniversityMuhayel AseerKingdom of Saudi Arabia Department of Information System King Khalid UniversityMuhayel AseerKingdom of Saudi Arabia

Cloud resource scheduling is gaining prominence with the increasingtrends of reliance on cloud infrastructure solutions. Numerous sets of cloudresource scheduling models were evident in the literature. Cloud resource scheduling refers to the distinct set of algorithms or programs the service providersengage to maintain the service level allocation for various resources over a virtualenvironment. The model proposed in this manuscript schedules resources of virtual machines under potential volatility aspects, which can be applied for anypriority metric chosen by the server administrators. also, the model can be flexible for any time frame-based analysis of the load factor. The model discussed inthis manuscript relies on the Bollinger Bands tool for understanding the potentialvolatility aspects of a Virtual machine. The experimental study of the model compared to the contemporary load balancing model called STLB (Starvation Threshold-based Load Balancing) refers to a simple and potential model that can bemore pragmatic for sustainable ways of load balancing.

关键词： Cloud computing service level agreements virtual machines load balancing scheduling

Resistance and Reactance of monopole Fields Induced by a Test Charge Drifting Off-Axis in a Cold and Collisional Cylindrical Plasma

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Chinese Physics Letters 2018年第8期35卷 49-53页

作者： m.S.Bawa'aneh a.m.al-Khateeb Y.-c.Ghim Department of Physics Yarmouk University Department of Nuclear and Quantum Engineering KAIST

We study the interaction of a uniform, cold and collisional plasma with a test charged particle moving off-axis at a constant speed down a cylindrical tube with a resistive thick metallic wall. Upon matching the electromagnetic field components at all interfaces, the induced monopole electromagnetic fields in the plasma are obtained in the frequency domain. An expression for the plasma electric resistance and reactance is derived and analyzed numerically for some representative parameters. Near the plasma resonant frequency, the plasma resistance evolves with frequency like a parallel RLC resonator with peak resistance at the plasma frequency pe, while the plasma reactance can be capacitive or inductive in nature depending on the frequency under consideration.

关键词： In Resistance and Reactance of monopole Fields Induced by a Test Charge Drifting Off-Axis in a Cold and Collisional Cylindrical Plasma

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Singular Hammerstein-Volterra Integral Equation and Its Numerical Processing

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Journal of Applied mathematics and Physics 2021年第2期9卷 379-390页

作者： A. m. al-bugami Department of mathematics Faculty of Sciences Taif University Taif KSA

In this paper, the existence and uniqueness of solution of singular Hammerstein-Volterra integral equation (H-VIE) are considered. Toeplitz matrix (Tmm) and product Nystrom method (PNm) to solve the H-VIE with singula... 详细信息

关键词： Integral Equation Hammerstein Logarithmic Kernel

Numerical Treatments of Functional Fredholm Integral Equation in 2D with Discontinuous Kernels

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Journal of Applied mathematics and Physics 2023年第11期11卷 3702-3711页

作者： Abeer m. al-bugami Department of mathematics and Statistics Collage of Sciences Taif University Taif Saudi Arabia

This work proposes a new definition of the functional Fredholm integral equation in 2D of the second kind with discontinuous kernels (FT-DFIE). Furthermore, the work is concerned to study this new equation numerically. The existence of a unique solution of the equation is proved. In addition, the approximate solutions are obtained by two powerful methods Toeplitz matrix method (Tmm) and Product Nystr?m methods (PNm). The given numerical examples showed the efficiency and accuracy of the introduced methods.

关键词： Functional Integral Equation Tmm PNm Hammerstion

丝网印刷选择离子电极测定药物试剂中的氢溴酸西酞普兰（英文）

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分析化学 2014年第4期42卷 565-572页

作者： Tamer Awad ali Gehad G.mohamed a.m.al-Sabagh m.A.migahed Egyptian Petroleum Research Institute (EPRI) Chemistry Department Faculty of ScienceCairo University

以四硼酸钾(KTpClPB)离子载体(电极V)和西酞普兰磷钨酸(cp-pt)离子对混合物(电极X)作为丝网印刷电极的电活性物质、磷酸三甲苯酯(TCP)作为溶剂中介,制备并表征了一种新型丝网印刷离子选择电极。利用此电极测定药剂中的西酞普兰,在4.90×... 详细信息

以四硼酸钾(KTpClPB)离子载体(电极V)和西酞普兰磷钨酸(cp-pt)离子对混合物(电极X)作为丝网印刷电极的电活性物质、磷酸三甲苯酯(TCP)作为溶剂中介,制备并表征了一种新型丝网印刷离子选择电极。利用此电极测定药剂中的西酞普兰,在4.90×10!71.0×10!2(电极V)和1.0×10!61.0×10!2mol/L(电极X)浓度范围内呈一近似-Nernstain响应,斜率分别为60.47±0.80和59.93±1.45 mV/decade,检出限分别为0.49和1.0μmol/L。电极具有响应快、重复性好、稳定性高(电极V:5个月,电极X,4个月)、宽pH值适应范围(电极V:29,电极X,28)以及良好的选择性等特点,可应用于测定尿液和血清中的西酞普兰。

关键词：西酞普兰离子选择电极丝网印刷电极药物制剂电位法测定

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同源结构域相互作用的蛋白激酶2与肿瘤

肿瘤 2007年第6期27卷 502-504页

作者： mariam a.m.al-Beiti 鹿欣复旦大学附属妇产科医院妇科上海200011

同源结构域相互作用蛋白激酶2(homeodomain-interacting protein kinase 2,HIPK2)是一种存在于不同生物体,定位于细胞核内的丝氨酸/苏氨酸蛋白激酶,和共同区域转录因子相结合发挥作用。HIPK2对肿瘤细胞的作用尚未完全阐明。目前研究发现... 详细信息

同源结构域相互作用蛋白激酶2(homeodomain-interacting protein kinase 2,HIPK2)是一种存在于不同生物体,定位于细胞核内的丝氨酸/苏氨酸蛋白激酶,和共同区域转录因子相结合发挥作用。HIPK2对肿瘤细胞的作用尚未完全阐明。目前研究发现,HIPK2参与调节肿瘤抑制基因p53和诱导细胞凋亡,并且与胚胎发生和肿瘤发生发展密切相关。p53的Ser46磷酸化对激活凋亡程序有重要作用。HIPK2在一些肿瘤中出现的降调节现象以及在染色体7q32-q33的杂合性的缺失提示:HIPK2可能是一个肿瘤抑制基因。

关键词：肿瘤蛋白激酶肿瘤抑制蛋白质,p53

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