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NTRU_SSS:Anew Method Signcryption Post Quantum Cryptography Based on Shamir’s Secret Sharing

Computers, Materials & Continua 2023年第7期76卷 753-769页

作者： asma ibrahim hussein Abeer Tariq MaoLood Ekhlas Khalaf Gbashi Ministry of Higher Education and Scientific Research BagdadIraq Affiliations Computer Science Univ.of TechnologyBagdad750004Iraq

With the advent of quantum computing,numerous efforts have been made to standardize post-quantum cryptosystems with the intention of(eventually)replacing Elliptic Curve Cryptography(ECC)and Rivets-Shamir-Adelman(RSA).A modified version of the traditional N-Th Degree Truncated Polynomial Ring(NTRU)cryptosystem called NTRU Prime has been developed to reduce the attack *** this paper,the Signcryption scheme was proposed,and it is most efficient than others since it reduces the complexity and runs the time of the code execution,and at the same time,provides a better security degree since it ensures the integrity of the sent message,confidentiality of the data,forward secrecy when using refreshed parameters for each *** to prevent the man-in-the-middle attack from being active or passive,and non-repudiation when the sender can’t deny the recently sent *** study aims to create a novel NTRU cryptography algorithm system that takes advantage of the security features of curve fitting operations and the valuable characteristics of chaotic *** proposed algorithm combines the(NTRU Prime)and Shamir’s Secret Sharing(SSS)features to improve the security of the NTRU encryption and key generation stages that rely on robust polynomial *** on experimental results and a comparison of the time required for crucial exchange between NTRU-SSS and the original NTRU,this study shows a rise in complexity with a decrease in execution time in the case when compared to the original ***’s encouraging to see signs that the suggested changes to the NTRU work to increase accuracy and efficiency.

关键词： Post-quantum cryptography NTRU Shamir’s secret sharing public key

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A Hybrid Model for Improving Software Cost Estimation in Global Software Development

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Computers, Materials & Continua 2024年第1期78卷 1399-1422页

作者： Mehmood Ahmed Noraini B.ibrahim Wasif Nisar Adeel Ahmed Muhammad Junaid Emmanuel Soriano Flores Divya Anand Faculty of Computer Science and Information Technology Universiti Tun Hussein Onn Malaysia Parit RajaBatu Pahat86400Malaysia Department of Computer Science COMSATS University Wah Cantt CampusIslamabad47010Pakistan Department of Information Technology The University of HaripurKhyber Pakhtunkhwa22620Pakistan Engineering Research Innovation Group Universidad Europea del AtlanticoSantander39011Spain

Accurate software cost estimation in Global Software Development(GSD)remains challenging due to reliance on historical data and expert *** models,such as the Constructive Cost Model(COCOMO II),rely heavily on historical and accurate *** addition,expert judgment is required to set many input parameters,which can introduce subjectivity and variability in the estimation ***,there is a need to improve the current GSD models to mitigate reliance on historical data,subjectivity in expert judgment,inadequate consideration of GSD-based cost drivers and limited integration of modern technologies with cost *** study introduces a novel hybrid model that synergizes the COCOMO II with Artificial Neural Networks(ANN)to address these *** proposed hybrid model integrates additional GSD-based cost drivers identified through a systematic literature review and further vetted by industry *** article compares the effectiveness of the proposedmodelwith state-of-the-artmachine learning-basedmodels for software cost *** the NASA 93 dataset by adopting twenty-six GSD-based cost drivers reveals that our hybrid model achieves superior accuracy,outperforming existing *** findings indicate the potential of combining COCOMO II,ANN,and additional GSD-based cost drivers to transform cost estimation in GSD.

关键词： Artificial neural networks COCOMO II cost drivers global software development linear regression software cost estimation

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Imbalanced Data Classification Using SVM Based on Improved Simulated Annealing Featuring Synthetic Data Generation and Reduction

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Computers, Materials & Continua 2023年第4期75卷 547-564页

作者： hussein ibrahim hussein Said Amirul Anwar Muhammad Imran Ahmad Department of Computer Techniques Engineering AlSafwa University CollegeKarbala56001Iraq Faculty of Electronic Engineering&Technology Universiti Malaysia PerlisArau02600PerlisMalaysia

Imbalanced data classification is one of the major problems in machine *** imbalanced dataset typically has significant differences in the number of data samples between its *** most cases,the performance of the machine learning algorithm such as Support Vector Machine(SVM)is affected when dealing with an imbalanced *** classification accuracy is mostly skewed toward the majority class and poor results are exhibited in the prediction of minority-class *** this paper,a hybrid approach combining data pre-processing technique andSVMalgorithm based on improved Simulated Annealing(SA)was ***,the data preprocessing technique which primarily aims at solving the resampling strategy of handling imbalanced datasets was *** this technique,the data were first synthetically generated to equalize the number of samples between classes and followed by a reduction step to remove redundancy and duplicated *** is the training of a balanced dataset using *** this algorithm requires an iterative process to search for the best penalty parameter during training,an improved SA algorithm was proposed for this *** this proposed improvement,a new acceptance criterion for the solution to be accepted in the SA algorithm was introduced to enhance the accuracy of the optimization *** works based on ten publicly available imbalanced datasets have demonstrated higher accuracy in the classification tasks using the proposed approach in comparison with the conventional implementation of *** at an average of 89.65%of accuracy for the binary class classification has demonstrated the good performance of the proposed works.

关键词： Imbalanced data resampling technique data reduction support vector machine simulated annealing

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Influence of Fe_(2)O_(3) on the physical,structural and electrical properties of sodium lead borate glasses

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Journal of Advanced Ceramics 2014年第2期3卷 155-164页

作者： Safeya ibrahim Mohamed Mahmoud GOMAA hussein DARWISH Glass Research Department National Research CentreDokkiCairoEgypt Geophysical Sciences Department National Research CentreDokkiCairoEgypt

The influence of adding Fe_(2)O_(3) at the expense of Na_(2)O in sodium lead borate glasses on the structural,physical and electrical properties have been *** obtained from Fourier transform infrared(FTIR)spectra indicated that Fe_(2)O_(3) plays an important role in converting three coordinated boron atoms[BO_(3)]to four coordinated boron atoms[BO4].The physical properties such as density and molar volume helped to evaluate the compact structure of the prepared glass samples due to presence of[BO4]*** increase of Fe_(2)O_(3)/Na_(2)O replacements led to increasing the microhardness values and decreasing the thermal expansion coefficients of the studied *** increase of Fe_(2)O_(3)/Na_(2)O replacements generally decreased the AC *** decrease might be due to converting of the three coordinated boron atoms[BO_(3)]to four coordinated boron atoms[BO_(4)].Dielectric constants of the samples might be an indication of the distortion in the coordinated boron *** obtained experimental data indicated the internal structure of glass network and the change of the structure of the samples from three[BO_(3)]to four coordinated boron atoms[BO4].

关键词： borate glasses Fourier transform infrared(FTIR)spectra microhardness thermal expansion AC electrical properties

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Epidemiology of Measles Cases in South Darfur State, Sudan, 2011-2015

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Biomedical and Environmental Sciences 2017年第12期30卷 917-921页

作者： TAHA hussein Musa REHAB ibrahim Kambo ABDELKAREEM Abdallah Ahmed HASSAN hussein Musa Key Laboratory of Environmental Medicine Engineering Ministry of Education Department of Epidemioiogy and Biostatistics School of Public Health Southeast University Nanjing 210009 Jiangsu China World Health Organization WHO South Darfur Sub-Office Nyala 999129 Sudan Department of Physiology and Biochemistry Faculty of Veterinary Sciences University of Nyala P.O Box 155 999129 Sudan Department of Medical Microbiology Faculty of Medical Laboratory Sciences University of Khartoum Khartoum state P.O. Box 11081 Khartoum 999219 Sudan

Case-based surveillance measles data was defined according to World Health Organization （WHO） guidelines. A total of 511 measles cases were studied from 2011 to 2015 in Southern Darfur State, Sudan and 58.1% of cases were confirmed from Nyala city. About 43.4% of cases were males, 56.6% of cases were female, and 47.7% were children under five years old. Similarity, within February to June, the cases increased by 8.0% in children vaccinated through measles campaign, and 5.3% in children that used child vaccination card and 78.7% in unvaccinated one.

关键词： Epidemiology of Measles Cases South Darfur State

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Preparation and Properties of Poly(vinyl alcohol)/Chitosan Blend Bio-nanocomposites Reinforced by Cellulose Nanocrystals

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Chinese Journal of Polymer Science 2014年第12期32卷 1620-1627页

作者： Susan Azizi Mansor Bin Ahmad Nor Azowa ibrahim Mohd Zobir hussein Farideh Namvar Department of Chemistry Faculty of Science University Putra Malaysia Materials Synthesis and Characterization Laboratory Institute of Advanced Technology University Putra Malaysia Institute of Tropical Forestry and Forest Products Universiti Putra Malaysia Mashhad Branch Islamic Azad University

The aim of this paper is to report the effect of the addition of cellulose nanocrystals（CNCs） on the mechanical, thermal and barrier properties of poly（vinyl alcohol）/chitosan（PVA/Cs） bio-nanocomposites films prepared through the solvent casting process. The characterizations of PVA/Cs/CNCs films were carried out in terms of X-ray diffraction（XRD）, transmission electron microscopy（TEM）, scanning electron microscopy（SEM）, thermogravimetric analysis（TGA and DTG）, oxygen transmission rate（OTR）, and tensile tests. TEM and SEM results showed that at low loading levels, CNCs were dispersed homogenously in the PVA/Cs matrix. The tensile strength and modulus in films increased from 55.1 MPa to 98.4 MPa and from 395 MPa to 690 MPa respectively, when CNCs content went from 0 wt% to 1.0 wt%. The thermal stability and oxygen barrier properties of PVA/Cs matrix were best enhanced at 1.0 wt% of CNCs loading. The enhanced properties attained by incorporating CNCs can be beneficial in various applications.

关键词： Bio-nanocomposite Poly(vinyl alcohol)/chitosan Cellulose nanocrystals Mechanical properties Thermal properties.

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Fe doping promoted electrocatalytic N2 reduction reaction of 2H MoS2

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Chinese Chemical Letters 2020年第9期31卷 2487-2490页

作者： Jiaojiao Guo Tsegaye Tadesse Tsega ibrahim Ul Islam asma Iqbal Jiantao Zai Xuefeng Qian School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China

Electrocatalytic N2 reduction to ammonia is a fascinating alternative to Haber-Bosch process and also considered as an energy sto rage *** work,Fe doped MoS2/carbon cloth(CC) has been studied on the electro-catalysis fix nitrogen indicating the doped Fe can indeed enhance the MoS2 material *** with MoS2/CC,Fe-Mo-S-3/CC not only increases 10 times in the rate of production ammonia,but also 5 times in Faraday efficiency.

关键词： 2H MoS2 Electrocatalytic N2 reduction reaction(NRR) Fe doping Ammonia

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Copper oxide nanoparticles-loaded zeolite and its characteristics and antibacterial activities

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Journal of Materials Science & Technology 2017年第8期33卷 889-896页

作者： Abdullah A.Alswat Mansor Bin Ahmad Mohd Zobir hussein Nor Azowa ibrahim Tawfik A.Saleh Department of Chemistry Faculty of ScienceUniversiti Putra MalaysiaSelangor 43400Malaysia Department of Chemistry Sana'a UniversityYemen Department of Chemistry King Fahcl University of Petroleum&MineralsDhahran 31261Saudi Arabia

In the present work, a simple and green co-precipitation method was used to prepare copper oxide-zeolite nanocomposites（CuO-zeolite NCs）. The weight ratio（1, 3, 5, 8 and 10 wt%） of CuO nanoparticles（NPs）loaded into zeolite was investigated to obtain the optimum CuO distribution for antibacterial *** prepared CuO-zeolite NCs were characterized by ultraviolet-visible（UV–vis） spectroscopy, Fourier transform infrared（FT-IR） spectroscopy, powder X-ray diffraction（XRD）, and energy dispersive X-ray fluorescence spectrometry（EDXRF）. The transmission electron microscopy（TEM） and field emission scanning electron microscopy（FE-SEM） revealed a uniform surface morphology of the CuO-zeolite *** UV–vis spectrum of NCs showed absorption peaks between 230 and 280 nm for nano-CuO in the XRD patterns, and new peaks appeared between（36.56？–38.83？） related to the CuO. At weight ratio less than 10 wt%, the CuO nanoparticles loaded to the zeolite exhibited spherical shapes with average particle diameter of 6.5 nm measured by TEM and XRD. Antibacterial activities were tested against Gram-negative and Gram-positive bacteria. The obtained results showed that, CuO-zeolite NCs with 8 wt% CuO nanoparticles had the highest antibacterial activities against Bacillus Subtilis B29 and Salmonella Choleraesuis ATCC10708, which can be attributed to the good dispersion of CuO NPs on the zeolite surface.

关键词： Copper oxide-zeolite Nanocomposites Antibacterial

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Bromine and oxygen redox species mediated highly selective electro-epoxidation of styrene

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Organic Chemistry Frontiers 2022年第2期9卷 436-444页

作者： Yuchi Zhang asma Iqbal Jiantao Zai Shu-Yu Zhang Hongran Guo Xuejiao Liu ibrahim ul Islam Hira Fazal Xuefeng Qian Shanghai Electrochemical Energy Devices Research Center School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong University Shanghai200240P.R.China

Olefin epoxidation is an essential transformation and arouses great interest among the scientific community for the key role of epoxide in the chemical *** methods suffer from harmful oxidants and require harsh operating conditions and complex separation ***-epoxidation through bromine redox reactions is an eco-friendly ***,the lack of efficient electrodes always limits the selectivity of epoxidation and results in massive energy ***,we found that GF-CoS_(2)/CoS heterostructures anchored on graphite felt(GF-CoS_(2)/CoS)can efficiently facilitate the generation of bromine redox species on the *** synergistic cooperation between the bromine redox species and oxygen redox species(generated on a graphite rod cathode)can establish a benign electro-epoxidation system for olefin substrates in an ambient *** the optimized reaction conditions,the epoxidation of styrene can achieve a yield of 97% at 30 mA cm^(-2).Importantly,the applied voltage(4-5 V)is roughly half of the Pt-based electrode system(7.8-9.3 V),hence,saving half of the *** demonstrated that our proposed strategy could also be applied to other *** of the simple,sustainable,and economic advantages of the epoxidation process,we believe this strategy is highly desirable for technical applications.

关键词： redox epoxidation styrene

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Can miRNA712＿3p be a promising biomarker for early diagnosis of toxoplasmosis?

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Asian Pacific Journal of Tropical Medicine 2018年第12期11卷 688-692页

作者： Nermine Mogahed Fawzy hussein Mogahed Safaa ibrahim Khedr Rasha Abdelmawla Ghazala Inas Mohamed Masoud Medical Parasitology Department Faculty of Medicine Alexandria University Medical Biochemistry Department Faculty of Medicine Alexandria University Pharmaceutical Chemistry Faculty of Pharmacy and Drug Manufacturing Pharos University in Alexandria

Objective: To assess the role of miRNA712_3p as a specific biomarker in early detection of toxoplasmosis in plasma of mice acutely infected with Toxoplasma gondii. Methods: Real-time PCR was used to measure the level of miRNA712_3p in plasma of infected mice. Immunecompetent and immune-suppressed mice were examined, three and five days post-infection. Results: Results revealed significant up-regulation of plasma miRNA712_3p in both immunecompetent and immune-compromised groups in comparison to the control non-infected group. Additionally, an increase in the level of miRNA712_3p was noticed correspondently in the parasite density detected in liver impression smears. Conclusions: miRNA712_3p can be used as a novel biomarker for the detection of Toxoplasma gondii infection in both immunecompetent and immune-compromised host.

关键词： Toxoplasma gondii microRNAs miRNA7123p Biomarker Real-time PCR

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