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Al-Azhar Bulletin of Science最新文献

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Distributed Intrusion Detection Systems in Big Data: A Survey 大数据中的分布式入侵检测系统:综述
Al-Azhar Bulletin of Science Pub Date : 2021-09-29 DOI: 10.21608/absb.2021.63810.1100
B. Hameed, Abdallah A. Alhabshy, K. Eldahshan
{"title":"Distributed Intrusion Detection Systems in Big Data: A Survey","authors":"B. Hameed, Abdallah A. Alhabshy, K. Eldahshan","doi":"10.21608/absb.2021.63810.1100","DOIUrl":"https://doi.org/10.21608/absb.2021.63810.1100","url":null,"abstract":"We live in a time where data stream by the second, which makes intrusion detection a more difficult and tiresome task, and in turn intrusion detection systems require an efficient and improved detection mechanism to detect the intrusive activities. Moreover, handling the size, complexity, and availability of big data requires techniques that can create beneficial knowledge from huge streams of the information, which imposes the challenges on the process of both designing and management of both Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) in terms of performance, sustainability, security, reliability, privacy, energy consumption, fault tolerance, scalability, and flexibility. IDSs and IPSs utilize various methodologies to guarantee security, accessibility and reliability of enterprise computer networks. This paper presents a comprehensive study of the Distributed Intrusion Detection Systems in Big Data, and presents intrusion detection and prevention techniques that utilize machine learning, big data analytics techniques in distributed systems of the intrusion detection.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81686067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The electrochemical sensing of nalbuphine hydrochloride drug substance in vitro by the cyclic voltammetric and conductometric titration techniques 循环伏安和电导滴定技术对盐酸纳布啡原料药的体外电化学传感
Al-Azhar Bulletin of Science Pub Date : 2021-09-28 DOI: 10.21608/absb.2021.55712.1096
B. Elsayed, E. Gomaa, Mgdy Awad, A. Abdallah
{"title":"The electrochemical sensing of nalbuphine hydrochloride drug substance in vitro by the cyclic voltammetric and conductometric titration techniques","authors":"B. Elsayed, E. Gomaa, Mgdy Awad, A. Abdallah","doi":"10.21608/absb.2021.55712.1096","DOIUrl":"https://doi.org/10.21608/absb.2021.55712.1096","url":null,"abstract":"The electrochemical sensing of Nalbuphine hydrochloride drug substance in vitro by the cyclic voltammetry technique using the activated glassy carbon electrode. The solvation of CdCl2 alone or in the presence of Nalbuphine HCl was studied by CV technique in 0.05 M KCl supporting electrolyte and different concentrations from CdCl2 at 305.15K. The cyclic voltammograms were preceded at different scan rates 0.1, 0.05, 0.02 and 0.01 V Sec. Also, different Nalbuphine HCl concentrations were utilized for studying their effect as electrochemical sensors on the solvation and kinetics parameters of CdCl2. The redox mechanism of the system was determined from the resulted data. Moreover, the Gibbs free energies of the complex formation were evaluated. The formation constants and Gibbs free energies were calculated from the conductometric titration curves. The molar ratios of the complexes were obtained indicating the formation of 1:2 and 1:1 (M:L). The formation constants of different complexes in water: methanol solvent followed the order: Kf (1:2) > Kf (1:1) for (M:L). The (∆H) and (∆S) of formation and association of complexes were also estimated and discussed. The solvation ∆G, ∆Hs and ∆Ss were calculated from solubility measurements for nalbuphine HCl at different temperatures.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"433 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79185294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suppress the vibration of a nonlinear dynamical system subjected to external force using a positive position feedback control. 利用正位置反馈控制抑制非线性动力系统在外力作用下的振动。
Al-Azhar Bulletin of Science Pub Date : 2021-09-27 DOI: 10.21608/absb.2020.46646.1090
F. Osama, Y. Amer, K. Raslan
{"title":"Suppress the vibration of a nonlinear dynamical system subjected to external force using a positive position feedback control.","authors":"F. Osama, Y. Amer, K. Raslan","doi":"10.21608/absb.2020.46646.1090","DOIUrl":"https://doi.org/10.21608/absb.2020.46646.1090","url":null,"abstract":"Vibration suppression using a positive position feedback (PPF) control for a nonlinear dynamical system which subjected to an external force is studied. The proposed model is the vertical dynamic excitation of structures induced by a single pedestrian walking along a straight path on flat and relatively stiff surfaces. The multiple scale perturbation technique was applied to derive the first order approximate solution of the system. The response equation and the stability criteria for the system were derived near the simultaneous primary and internal resonance cases. MATLAB 14.0 have been used for the numerical studying to show the time history of the main system with and without PPF controller. Also, the effect of the system parameters on the response system have been studied. A comparison between the approximate and numerical solutions is illustrated and it show a good agreement between them. It is found that (PPF) controller is very suitable for small natural frequency dynamical systems subjected to primary resonance excitations.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86204958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topp-Leone Lomax Distribution Topp-Leone Lomax发行公司
Al-Azhar Bulletin of Science Pub Date : 2021-09-27 DOI: 10.21608/absb.2021.52718.1095
S. Radwan
{"title":"Topp-Leone Lomax Distribution","authors":"S. Radwan","doi":"10.21608/absb.2021.52718.1095","DOIUrl":"https://doi.org/10.21608/absb.2021.52718.1095","url":null,"abstract":"","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75248100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ADSORPTION OF COPPER IONS ON CHITOSAN-BASED FILMS FOR DETECTION OF H2S GAS POLLUTANT 壳聚糖基膜吸附铜离子检测h2s气体污染物
Al-Azhar Bulletin of Science Pub Date : 2021-09-27 DOI: 10.21608/absb.2021.68993.1108
A. Gamal, A. Ibrahim, A. El-Zomrawy
{"title":"ADSORPTION OF COPPER IONS ON CHITOSAN-BASED FILMS FOR DETECTION OF H2S GAS POLLUTANT","authors":"A. Gamal, A. Ibrahim, A. El-Zomrawy","doi":"10.21608/absb.2021.68993.1108","DOIUrl":"https://doi.org/10.21608/absb.2021.68993.1108","url":null,"abstract":"Sulfide in its form of free hydrogen sulfide is recognized to cause anxiety at its lower level of concentration, but at a higher level, it causes permanent brain damage, fainting, or even death through asphyxiation. In this study, chitosan films were fabricated, and the copper ions were loaded onto them by way of adsorption to be used in the detection of hydrogen sulfide (H2S) gas electrochemically. The results presented an amazing variation in the electrical resistivity and conductivity of the chitosan and copper-loaded chitosan films against time in response to H2S gas adsorption. Also, the results demonstrate a significant increase in the conductivity of the copper-loaded chitosan/H2S film as compared with pure chitosan/H2S. Furthermore, the films were examined after the H2S adsorption process in many ways; resistor-capacitor circuit, electrochemical impedance spectroscopy, X-ray diffraction (XRD), energy-dispersive X-ray (EDX), as well as electron scanning microscopy (SEM). SEM images indicated the successful loading of copper ions onto the chitosan structure.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75046142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimating and Prediction Accelerated Life Test Using Constant Stress for Marshall-Olkin Extended Burr Type X Distribution Based on Type-II Censoring 基于ii型截尾的Marshall-Olkin X型扩展毛刺分布恒应力估计与预测加速寿命试验
Al-Azhar Bulletin of Science Pub Date : 2021-09-27 DOI: 10.21608/absb.2021.61409.1099
R. Refaey
{"title":"Estimating and Prediction Accelerated Life Test Using Constant Stress for Marshall-Olkin Extended Burr Type X Distribution Based on Type-II Censoring","authors":"R. Refaey","doi":"10.21608/absb.2021.61409.1099","DOIUrl":"https://doi.org/10.21608/absb.2021.61409.1099","url":null,"abstract":"In this paper constant stress accelerated life tests are discussed based on Type II censored sampling from Marshall-Olkin extended Burr Type X Distribution. The model parameters and the acceleration factor are estimated using the maximum likelihood estimation method and two-sample predictions are considered for future order statistics. Further, the asymptotic confidence intervals for the model parameters are discussed. Numerical study is given, and some interesting comparisons are presented to illustrate the theoretical results. Moreover, the results are applied on real dataset.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80939695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A semi-analytical solution for the motion of a low altitude Earth satellite under J2-gravity and air drag perturbations j2重力和空气阻力摄动下低空地球卫星运动的半解析解
Al-Azhar Bulletin of Science Pub Date : 2021-09-27 DOI: 10.21608/absb.2021.67580.1106
H. A. Embaby, A. H. Ibrahim, I. A. Hassan, M. N. Ismail
{"title":"A semi-analytical solution for the motion of a low altitude Earth satellite under J2-gravity and air drag perturbations","authors":"H. A. Embaby, A. H. Ibrahim, I. A. Hassan, M. N. Ismail","doi":"10.21608/absb.2021.67580.1106","DOIUrl":"https://doi.org/10.21608/absb.2021.67580.1106","url":null,"abstract":"The motion of the low altitude Earth satellites is important for space applications, since these altitudes are crowded by a large number of artificial satellites. At this region the Earth’s oblateness and the drag force play an important role and capture the dynamics of the problem. The present work investigates the motion of a low altitude Earth satellite under the combined effect of the Earth’s gravity, up to the fourth zonal harmonic, and the drag force. The equations of motion are formulated under the considered force model. The problem under concern is treated using two different techniques, Cowell's and Average methods. We used the TLE data of the International Space Station (ISS) to compare the analytical method (average method) and the numerical Cowell’s method. To better understanding the problem, we carried out several numerical explorations. A Mathematica code is constructed to simulate the numerical examples. Comparing the two methods, we found that Cowell’s method gave more acceptable results.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84501699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Double quantum dot of graphene nanoribbon qubit for Quantum information 用于量子信息的石墨烯纳米带量子比特双量子点
Al-Azhar Bulletin of Science Pub Date : 2021-09-17 DOI: 10.21608/absb.2021.70433.1109
A. Selim
{"title":"Double quantum dot of graphene nanoribbon qubit for Quantum information","authors":"A. Selim","doi":"10.21608/absb.2021.70433.1109","DOIUrl":"https://doi.org/10.21608/absb.2021.70433.1109","url":null,"abstract":"Weak hyperfine interaction as well as spin-orbit interaction enforced that graphene quantum dot qubit material rather than other semiconductor qubits material. So; we suggest here a Hamiltonian model of a graphene nanoribbon double quantum dot qubit based on the functionalization of graphene nanoribbon by hydrogen atoms to produce a theoretical studied on a quantum computer. We are using the Dirac equation and the Heisenberg exchange approach to solve our model. Then we determine the exchange interaction Jex. We investigate the effects of potential barrier height and barrier thickness d on exchange coupling Jex. Our results show a great variation of Jex depends on these parameters, and how this parameter affected on Jex at special value. Also, we can use the variation of Jex with both potential barrier height and barrier thickness d to represent how the information can transfer, which is important to gate operation necessary for quantum information.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78445645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dromedary camel epididymal sperm characteristics at breeding and non-breeding seasons 单峰骆驼繁殖期和非繁殖期附睾精子特征
Al-Azhar Bulletin of Science Pub Date : 2021-06-01 DOI: 10.21608/absb.2021.67232.1104
H. Elsharnoby, O. Kandil, H. A. Abu-Elnaga
{"title":"Dromedary camel epididymal sperm characteristics at breeding and non-breeding seasons","authors":"H. Elsharnoby, O. Kandil, H. A. Abu-Elnaga","doi":"10.21608/absb.2021.67232.1104","DOIUrl":"https://doi.org/10.21608/absb.2021.67232.1104","url":null,"abstract":"Testicles from 30 clinically healthy male mature dromedary camels were gathered from the El-Basatin slaughterhouse all the breeding season (Nov. 2018 to Apr. 2019) and the nonbreeding season (May 2019 to Oct. 2019). Within one year the epididymal sperm were obtained twice per month. This manuscript aimed to investigate the influence of seasonality on dromedary camel epididymal sperm characteristics (motility, viability, sperm cell concentration, morphology and membrane integrity). The results depicted that during the breeding period, the rate of motility, concentration, live spermatozoa, normal morphology and the intact membrane of dromedary camel epididymal sperm showed a high significant increase (P<0.05) when compared to the nonbreeding period. While rate of death, abnormalities and membrane damage of the dromedary camel epididymal sperm were highly increased (P <0.05) during non-breeding when compared to the breeding period. In conclusion, the dromedary epididymal camel’s sperm characteristics, viability and quality improved during breeding season.","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83054000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Biochemical and hemotologica changes against Doxorubicin Induced Toxicity in Rat 阿霉素致大鼠毒性的生化和血液学变化
Al-Azhar Bulletin of Science Pub Date : 2021-06-01 DOI: 10.21608/absb.2021.72920.1111
M. Thabit, S. Bakry, Yakout A. El-senosia, Samy Ali Hussein
{"title":"Biochemical and hemotologica changes against Doxorubicin Induced Toxicity in Rat","authors":"M. Thabit, S. Bakry, Yakout A. El-senosia, Samy Ali Hussein","doi":"10.21608/absb.2021.72920.1111","DOIUrl":"https://doi.org/10.21608/absb.2021.72920.1111","url":null,"abstract":"","PeriodicalId":7687,"journal":{"name":"Al-Azhar Bulletin of Science","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74582939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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