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Effect of energy content of the nitraminic plastic bonded explosives on their performance and sensitivity characteristics

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Defence Technology（防务技术） 2019年第4期15卷 488-494页

作者： Svatopluk Zeman Ahmed K. hussein Marcela Jungova Ahmed Elbeih Institute of Enegetic Materials Faculty of Chemical Technology University of Pardubice CZ-532 10 Pardubice Czechia Military Technical College Kobry Elkobbah Cairo Egypt

Information about the forty nine nitraminic plastic bonded explosives(PBXs)and different nitramines were *** of these PBXs are nitramines 1,3,5-trinitro-1,3,5-triazinane(RDX)and β-1,3,5,7-tetranitro-1,3,5-tetrazocane(β-HMX),cis-1,3,4,6-tetranitro-octahydroimidazo-[4,5-d]imidazole(bicyclo-HMX,BCHMX)and e-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane(e-HNIW,CL-20)which are bonded by polyfluoro-elastomers,polydimethyl-siloxane,poly-glycidyl azide,polyisobutylene,polystyrene-butadiene,poly-acrylonitrile-butadiene and hydroxyl-terminated polybutadiene in addition to a melt cast compositions based on 2,4,*** thirty two of these PBXs the relationships are specified and analyzed between heats of their combustion and relative explosive strengths;by means of these relationships it might be possible to estimate,which groupings in the macromolecule of binder could be liable to their primary fission in the PBXs ***,for forty two of these explosives,the relationships are described and analyzed between their enthalpies of formation and impact sensitivities;here is especially attention paid to PBXs filled by *** rate constants from Vacuum Stability Test(VST)of four nitramines and twenty PBXs are introduced into relationships with their enthalpies of *** to all the mentioned cases,increasing of energy content of the studied explosives leads to increase of the relative explosive strength or initiation reactivity,*** with the opposite trend,the outputs of VST are for BCHMX,where in PBXs are matrices with the esteric plasticizers or the energetic poly-glycidyl *** of RDX or HMX,respectively,into the BCHX PBXs gives ternary PBXs whose thermal stability,in the sense of applied VST,is higher comparing to the original binary explosives.

关键词： Enthalpy Explosive strength Combustion Nitramines PBX Thermal stability

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Plant Leaf Diseases Classification Using Improved K-Means Clustering and SVM Algorithm for Segmentation

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Computers, Materials & Continua 2023年第7期76卷 367-382页

作者： Mona Jamjoom Ahmed Elhadad hussein Abulkasim Safia Abbas Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia Department of Computer Science Faculty of Computers and InformationSouth Valley UniversityQena83523Egypt Faculty of Science New Valley UniversityEl-Kharga72511Egypt Department of Computer Science Faculty of Computer and Information SciencesAin Shams UniversityCairo11566Egypt

Several pests feed on leaves,stems,bases,and the entire plant,causing plant *** a result,it is vital to identify and eliminate the disease before causing any damage to *** detecting plant disease and treating it is pretty challenging in this *** processing is employed to detect plant disease since it requires much effort and an extended processing *** main goal of this study is to discover the disease that affects the plants by creating an image processing system that can recognize and classify four different forms of plant diseases,including Phytophthora infestans,Fusarium graminearum,Puccinia graminis,tomato yellow leaf ***,this work uses the Support vector machine(SVM)classifier to detect and classify the plant disease using various steps like image acquisition,Pre-processing,Segmentation,feature extraction,and *** gray level co-occurrence matrix(GLCM)and the local binary pattern features(LBP)are used to identify the disease-affected portion of the plant *** to experimental data,the proposed technology can correctly detect and diagnose plant sickness with a 97.2 percent accuracy.

关键词： SVM machine learning GLCM algorithm K-means clustering LBP

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LMI solutions for H-two and H-infinity decentralized controllers applied to an aerothermic process

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控制理论与应用（英文版） 2013年第2期11卷 247-254页

作者： Najib BENNIS Mustapha raMZI Mohamed HALOUA hussein YOULAL ENSET de rabat Avenue de l'Arme'e Royale Madinat Al Irfane 10100 B. P. 6207 Rabat-InstitutsMorocco LASTIMI EST de sale' Universite' Mohamed V Agdal Avenue Prince sidi Mohammed B.P 227 Sale' Me'dinaMorocco EMI Avenue IbnSina B. P. 765 Agdal RabatMorocco UFR Automatique et Technologies de l'Information Faculte' des Sciences de Rabat Avenue Ibn Batouta B. P. 1014 RabatMorocco

In this paper, we present a linear matrix inequality （LMI）-based solution to implement H-two and H- infinity decentralized robust control strategies. Appropriate parametrization of optimal H-two and H-infinity controllers is used. The general formulation of the decentralized control design leads to the optimal determination of both the state feedback gains and the observer gains of the decentralized controllers. This formulation is two folds： first, a centralized controller is obtained, and then, a simplified decentralized solution is derived by optimizing only the observer gains. The mathematical determination of these gains is formulated as an LMI optimization problem that can be easily solved using LMI solvers. As an experimental evaluation of these controllers, a real time application to an aerothermic process is carried out. A continuous-time model of the process obtained with a suitable direct continuous-time identification approach is elaborated. Results illustrating the real performance obtained from the H-two and H-infinity decentralized controllers are di^cu^ge.d and comnare, d with th~ ce^ntraliTed nn^g

关键词： Parametrization approach Decentralized control H-two/H-infinity control Parameters optimization Lin-ear matrix inequality (LMI) Subspace identification Aerothermic process

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Investigation of the Nd-Ce-Mg-Zn/Substituted Hydroxyapatite Effect on Biological Properties and Osteosarcoma Cells

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Journal of Renewable Materials 2023年第3期11卷 1485-1498页

作者： Suha Q.AL-Shahrabalee hussein Alaa Jaber Department of Materials Engineering Baghdad10001Iraq

Cancerous diseases and diseases resulting from bacteria and fungi are some of the pressures that humans ***,the development of biomaterials that are resistant to cancerous diseases,bacteria,and fungi has become one of the requirements of the medical field to extend the life of the biomaterial and fight pathogens after implanting these materials inside the human *** of the important biomaterials used in the field of orthopedics is *** this research,Nano substituted hydroxyapatite was prepared by the wet precipitation method,including replacing 5%of the calcium ions with neodymium,cerium,magnesium,and zinc ions in cationic *** tests were carried out to characterize the prepared *** biological properties were evaluated by examining the resistance of the substituted hydroxyapatite to bacteria and fungi,in addition to testing the effect of the material on normal cells and bone cancer *** results showed a new structure of hydroxyapatite after the substitution process and a significant improvement in the biological properties of the prepared biomaterial compared to other researches.

关键词： Hydroxyapatite neodymium cerium substitution

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Genetic analysis of the maximum germination distance of Striga under Fusarium oxysporum *** biocontrol in sorghum

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Journal of Integrative Agriculture 2018年第7期17卷 1585-1593页

作者： Emmanuel Mrema hussein Shimelis Mark Laing Learnmore Mwadzingeni University of Kwa Zulu-Natal/African Centre for Crop Improvement Scottsville 3209South Africa Tumbi Agricultural Research Institute TaboraTanzania

Maximum germination distance（MGD） is an important component of Striga resistance in sorghum. The objective of this study was to determine gene action influencing MGD of Striga hermonthica and Striga asiatica among selected sorghum lines treated with a biocontrol agent, Fusarium oxysporum f. sp. strigae（FOS） for effective breeding with Striga resistance, and FOS compatibility. Twelve sorghum genotypes were selected based on their Striga resistance, FOS compatibility, and superior agronomic performance. Selected genotypes were crossed using a bi-parental mating design to generate six families for genetic analysis. Agar-gel assays were used to determine low haustorium initiation factor（LHF） using the 12 parental lines, their F_1 progenies, backcross derivatives, and F_2 segregants in two sets. One set had S. hermonthica seed and the other one had S. asiatica seed. Both were treated with and without FOS. Genotypes were evaluated using a split-plot design with three replications and MGD data were recorded followed by generation mean analysis. FOS reduced MGD by 1cm under both S. hermonthica and S. asiatica infestations. Additive, dominance, and epistatic gene actions were involved in the control of MGD of the two Striga species in the evaluated populations. On average, the relative contribution of additive, additive×additive and dominance×dominance genetic effects on the MGD of S. hermonthica and S. asiatica, with FOS, were 20, 33, and 36%; and 21, 32, and 35%, respectively. Breeding methods exploiting these genetic effects may provide enhanced response to selection for Striga resistance and FOS compatibility in integrated Striga management（ISM） programmes.

关键词： Fusarium oxysporum f. sp. strigae genetic effect integrated Stnga management maximum germination distance sorghum

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Efficient Computation Offloading of IoT-Based Workflows Using Discrete Teaching Learning-Based Optimization

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Computers, Materials & Continua 2022年第11期73卷 3685-3703页

作者： Mohamed K.hussein Mohamed H.Mousa Department of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailiaEgypt Department of Information Technology College of Computer Science at AlKamilUniversity of JeddahJeddahSaudi Arabia

As the Internet of Things(IoT)and mobile devices have rapidly proliferated,their computationally intensive applications have developed into complex,concurrent IoT-based workflows involving multiple interdependent *** exploiting its low latency and high bandwidth,mobile edge computing(MEC)has emerged to achieve the high-performance computation offloading of these applications to satisfy the quality-of-service requirements of workflows and *** this study,we propose an offloading strategy for IoT-based workflows in a high-performance MEC *** proposed task-based offloading strategy consists of an optimization problem that includes task dependency,communication costs,workflow constraints,device energy consumption,and the heterogeneous characteristics of the edge *** addition,the optimal placement of workflow tasks is optimized using a discrete teaching learning-based optimization(DTLBO)*** experimental evaluations demonstrate that the proposed offloading strategy is effective at minimizing the energy consumption of mobile devices and reducing the execution times of workflows compared to offloading strategies using different metaheuristics,including particle swarm optimization and ant colony optimization.

关键词： High-performance computing internet of things(IoT) mobile edge computing(MEC) workflows computation offloading teaching learning-based optimization

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Environmental Isotopic Characterization of Groundwater and Surface Water in Northeast Missan Province,South Iraq

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Acta Geologica Sinica(English Edition) 2014年第4期88卷 1227-1238页

作者： hussein Badr GHALIB Ali Riza SGüT Selcuk University college of EngineeringGeology DepartmentSelcukTurkey Basrah University Geology DepartmentBasrahIraq

The present work studies the environmental isotopes assess groundwater characteristics of the different parts of the main aquifer in the northeast Missan Province in south of Iraq. Water samples of groundwater and surface water were collected for two dry and wet seasons during the water year of 2011-2012. The study shows that most of the groundwater in the aquifer falls above the global meteoric water line, and all the samples fall below the Mediterranean meteoric water line, indicating that these samples are a mixture of two water types. The tritium content of these samples supports this conclusion. The overall conclusion of this study indicates that there are two sources of groundwater recharge in the studied area： the ephemeral streams （Teeb and Dewerge） and major precipitation sources. According to the tritium levels at or below one tritium unit （TU） obtained from the water, supply wells are highly confined or ＂not vulnerable＂. Overall, the 3^H results imply that recent recharge has taken place during the last four to five decades. In the recharge area, the high tritium content in the southern part of the Teeb area suggests that the recharge originates from rapid infiltration of surface runoff. Therefore, the groundwater resources in the study area should be protected from contamination, because it will influence the aquifer in a relatively short period of time if any contamination enters the recharge areas of the aquifer.

关键词： Groundwater recharge Tritium environmental isotope meteoric water line Iraq

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Interleaving Guidance in Evolutionary Multi-Objective Optimization

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Journal of Computer Science & Technology 2008年第1期23卷 44-63页

作者： Lam Thu Bui Kalyanmoy Deb hussein A.Abbass Daryl Essam The Artificial Life and Adaptive Robotics Laboratory School of ITEEADFAUniversity of New South Wales Canberra Mechanical Engineering Department Indian Institute of TechnologyKanpur

In this paper, we propose a framework that uses localization for multi-objective optimization to simultaneously guide an evolutionary algorithm in both the decision and objective spaces. The localization is built using a limited number of adaptive spheres （local models） in the decision space. These spheres axe usually guided, using some direction information, in the decision space towards the areas with non-dominated solutions. We use a second mechanism to adjust the spheres to specialize on different parts of the Paxeto front by using a guided dominance technique in the objective space. Through this interleaved guidance in both spaces, the spheres will be guided towards different parts of the Paxeto front while also exploring the decision space efficiently. The experimental results showed good performance for the local models using this dual guidance, in comparison with their original version.

关键词： evolutionary multi-objective optimization guided dominance local models

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An Eclectic Image Encryption Scheme Depending on Chaos Algorithm

An Eclectic Image Encryption Scheme Depending on Chaos Algor...

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作者： hussein Ridha hussein Sayegh 湖南大学

学位级别：硕士

加密技术是保证图像传输和存储过程中的信息安全的基础。加密是应用在特殊数学算法上的过程,其关键是在数字数据和相关数学算法应用的解密数据传输之前,将这些数据转变成密文,以及从密文中返回原始数据。传统的加密技术往往具有较高的... 详细信息

加密技术是保证图像传输和存储过程中的信息安全的基础。加密是应用在特殊数学算法上的过程,其关键是在数字数据和相关数学算法应用的解密数据传输之前,将这些数据转变成密文,以及从密文中返回原始数据。传统的加密技术往往具有较高的加密和解密复杂度。为了提高加解密的效率,提出基于多重混沌的加密技术。加密技术在图像和视频内容的保护上是一种新的方法,它的目标是减少需要保护的数据量,同时结合混沌理论保留足够的安全级别。由于混合了一些异常的性能和原始条件的敏感性以及参数的混沌映射,基于混沌的加密技术是一种新而高效的方法,可以在解决难解的问题的同时使得图像加密过程快速且安全性高。基于混沌的算法通常很好地结合了快速、复杂、安全性高、合理的计算开销以及计算能力。提出一个折衷的加密算法,结合混沌映射与置换和扩散用于多媒体图像数据处理。置换图像的意思是把图像中的像素值与另一个扩散的像素值进行结合转化。众多研究中致力于研究更好的置乱解决方案,如混沌图像加密和选择性图像加密。因此,基于混沌的加密一直是研究热点且是有效的高速和高安全性加密方式。混沌系统具有许多重要的性质,如对初始条件和系统参数的敏感依赖性的伪随机性,没有周期性、拓扑传递性等等。首先改变RGB格式的图像为YUV格式。其次,采用DCT系数加密水平高和选择性系数(扩散层)导致的扩散过程。然后,利用混合矩阵将Y的所有像素进行置乱,并将U,V通过应用混沌标准映射作为第二层的安全加密,在初始混沌条件的基础上,提出两种密钥使用的扩散和混合过程,在每个图上产生不同的随机数的差异。将输入图像处理为二维8×8块的转化子阵列。将每个子阵的左上角作为焦点,因为它有很高的频率(DCT)和最近的第一个三级交流(低频)对它进行加密。然后将位置置换并基于多个混沌映射的每个子矩阵。最后,接收器使用相同的两级的密钥值来解密所加密的图像。折中图像加密技术依赖于混沌算法,采用这个技术主要使用了以下两个操作:一是布置有关普通图像的邻近像素点之间的关联。二是布置有关普通图像和加密图像通过混沌算法映射到四维空间后二者之间的关联。本文所提出的策略被设计支持以下性能:安全性能高、速度快、集合可防守和可压缩。从实证结果来看,所提出的策略拥有可计算安全性能;它与一些攻击类型如蛮力攻击、差分攻击、统计攻击和密文可选择的文本攻击的立场不同。另外,实验结果表明了所提出的策略是可以适用于带有真实的时间限制的多媒体应用,这个时间限制为平均执行时间为1秒且密码系统的加密比例等于6.2 6%。为确定"折衷图像加密"的设计问题,通常考虑以下两个问题:加密策略的提出应该被设计为可调节不同的安全级别,同时还要保持对不同的应用保持一个令人满意的执行速度。所提出的加密策略实现了JPEG压缩算法,并且不影响编码的工作负载的复杂性和压缩比,这是有一定的可能性的。离散余弦变换(DCT):这是一种数学上的转换,即用一个信号将DCT从空间域转变成频率域。下面将工作方案总结成以下两点:输出频率为8×8个DCT系数。DCT矩阵的左上角总是包含了一个高幅值,称作DC系数。其他系数代表更高的垂直和水平频率的增加,这些叫做AC系数。因为它们从左移到右、从上移到下,所以它们叫做低幅值。从实现和分析所提出的策略可以得出,这个策略可以清楚地分为以下三个点:通过实验验证由于有很大的密钥空间,在密钥对两者都混沌的情形下对轻微改变的敏感性,在图像像素达到0和策略主题有很高的NPCR值,甚至几乎接近100%,这两者之间的相关系数,此策略有很高的安全性能。实验表明,所提出的策略相对来说效率比较高,其密码系统是对应用集可调节的,调节的方式是调整混合矩阵和扩散矩阵的系数。提出的方案对于信息的完整性没有影响,并且加密之后的图像大小没有增加。解密时间是超过加密时间的,因为在解密过程中需要额外的操作。因此所提出的密码方案具有较好的雪崩性质(MSE>42dB),并且由于混合矩阵的混沌性质,所提出的方案具有较高的错误容忍性。

关键词：选择图像加密局部加密无序映射系统离散余弦变换

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Selective metal leaching from technosols based on synthetic root exudate composition

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Journal of Environmental Sciences 2020年第10期32卷 85-92页

作者： hussein Jaafar Kanbar Zeinab Matar Ghina Abed-AlHadi Safa Veronique Kazpard Research and Aralysis Platform for Enuironmental Sciences(PraSE) Doctoral School of Sciences and Techrology(EDST)The Lebanese UniversityP.O.5Rafic Hariri CampusHadatLebanon Department of Chemistry UmeàUniversitySE-90187UmeàSweden Department of Earth and Life Sciences Faculty of SciencesThe Lebanese UniversityRafic Hariri CampusHadatLebanon Laboratory of Georesources Geosciences and Enuironment(1.2GE)Faculty of SciencesThe Lebanese UniversityFanarLebanon

This study focused on metal release from technosols induced by synthetic root exudate(SRE).The effect of SRE composition on metal release was studied using six *** was done by treating the technosols with SRE solutions having varying concentrations of low molecular weight organic acids (LMWOAs),namely oxalic,citric,and malic ***,the physico-chemical parameters (p H and electric conductivity),Ca,Mg,Fe,Zn,and Cu release (by atomic absorption spectroscopy,AAS),chemical changes (by Fourier transform infrared,FT-IR),and organic parameters (by fluorescence) were *** release showed to be dependent on the SRE composition and technosol *** acid selectively released Ca,Mg,Zn,and Cu from technosols in a concentration-dependent manner;oxalic acid showed a significant role in the release of Mg and *** relatively high LMWOA concentrations,particulate organo-mineral complexes ***,technosol weathering was seen by the dissolution of humic substances and ferriallophanes,which in turn caused metal ***,re-precipitation of these phases showed to re-sorb metals,thus underestimating the role of LMWOAs in metal ***,the selective metal leaching was highly dependent on the SRE composition and LMWOA concentrations on one hand,and on the mineral,organic,and organo-mineral components of the technosols on the *** understanding of such processes is crucial for proposing and implementing environmental management strategies to reduce metal leaching or for the beneficial re-usage of metals (e.g.,for agromining) from technosols.

关键词： Technosols Oxalic acid Citric acid Metals Desorption Organo-mineral complexes

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