检索结果-南通市图书馆

Cancelable Speaker Identification System Based on Optical-Like Encryption Algorithms

Computer Systems Science & Engineering 2022年第10期43卷 87-102页

作者： Safaa El-Gazar Walid El-Shafai Ghada El-Banby Hesham F.A.Hamed Gerges M.Salama Mohammed Abd-Elnaby fathi E.Abd El-Samie Department of Electrical Engineering Faculty of EngineeringEgyptian-Russian UniversityCairoEgypt Department of Electronics and Electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Security Engineering Laboratory Department of Computer SciencePrince Sultan UniversityRiyadh11586Saudi Arabia Department of Industrial Electronics and Control Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh84428Saudi Arabia

Biometric authentication is a rapidly growing trend that is gaining increasing attention in the last decades.It achieves safe access to systems using biometrics instead of the traditional passwords.The utilization of a biometric in its original format makes it usable only once.Therefore,a cancelable biometric template should be used,so that it can be replaced when it is attacked.Cancelable biometrics aims to enhance the security and privacy of biometric authentication.Digital encryption is an efficient technique to be used in order to generate cancelable biometric templates.In this paper,a highly-secure encryption algorithm is proposed to ensure secure biometric data in verification systems.The considered biometric in this paper is the speech signal.The speech signal is transformed into its spectrogram.Then,the spectrogram is encrypted using two cascaded optical encryption algorithms.The first algorithm is the Optical Scanning Holography(OSH)for its efficiency as an encryption tool.The OSH encrypted spectrogram is encrypted using Double Random Phase Encoding(DRPE)by implementing two Random Phase Masks(RPMs).After the two cascaded optical encryption algorithms,the cancelable template is obtained.The verification is implemented through correlation estimation between enrolled and test templates in their encrypted format.If the correlation value is larger than a threshold value,the user is authorized.The threshold value can be determined from the genuine and imposter correlation distribution curves as the midpoint between the two curves.The implementation of optical encryption is adopted using its software rather than the optical setup.The efficiency of the proposed cancelable biometric algorithm is illustrated by the simulation results.It can improve the biometric data security without deteriorating the recognition accuracy.Simulation results give close-to-zero This values for the Equal Error Rate(EER)and close-to-one values for the Area under Receiver Operator Characteristic(AROC)curve.

关键词： Cancelable biometrics spectrogram OSH DRPE EER AROC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Drought-Mediated Modulation in Metabolomic Profiling of Nigella Sativa Leaf, Growth, Ecophysiology and Antioxidants

引用

Phyton-International Journal of Experimental Botany 2023年第12期92卷 3323-3344页

作者： Khalid Rehman Hakeem hesham f.Alharby M.Irfan Qureshi Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Princess Dr.Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology King Abdulaziz UniversityJeddahSaudi Arabia Department of Public Health Daffodil International UniversityDhakaBangladesh Department of Biotechnology Jamia Millia IslamiaNew DelhiIndia

Abiotic stresses,including drought,have been found to affect the growth and medicinal quality of numerous herbs.The proposed study aims to study the effects of different drought regimes on the metabolic profile,growth,ecophysiology,cellular antioxidants,and antioxidant potential of Nigella sativa(Black cumin)leaf.forty-day-old seedlings of N.sativa were exposed to three regimes of drought(control,moderate and high)for a week.UPLCMS/MS metabolic profile of the leaf reveals the presence of more than a hundred metabolites belonging to anthocyanins,chalcones,dihydro flavonoids,flavonoids,flavanols,flavones,flavonoid carbonoside,isoflavones,etc.Drought was found to alter the contents of identified metabolites.Drought stress-induced oxidative stress and increased production of hydrogen peroxide and superoxide anions.Physiological changes,activities of antioxidant enzymes,contents of antioxidants,and proline were significantly high under drought to protect against the low water regimes.furthermore,stressed leaf extract had higher antioxidant potential.Thus,N.sativa leaf bears multiple metabolic pathways and can tolerate a higher degree of drought or osmotic stress.

关键词： Nigella sativa metabolomics drought antioxidant mechanism flavonoids

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Deer Hunting Optimization with Deep Learning Model for Lung Cancer Classification

引用

Computers, Materials & Continua 2022年第10期73卷 533-546页

作者： Mahmoud Ragab hesham A.Abdushkour Alaa f.Nahhas Wajdi H.Aljedaibi Information Technology Department Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia Center of Artificial Intelligence for Precision Medicines King Abdulaziz UniversityJeddah 21589Saudi Arabia Mathematics Department Faculty of ScienceAl-Azhar UniversityNaser City 11884CairoEgypt Nautical Science Department Faculty of Maritime StudiesKing Abdulaziz UniversityJeddah21589Saudi Arabia Biochemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia Computer Science Department Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Lung cancer is the main cause of cancer related death owing to its destructive nature and postponed detection at advanced stages.Early recognition of lung cancer is essential to increase the survival rate of persons and it remains a crucial problem in the healthcare sector.Computer aided diagnosis(CAD)models can be designed to effectually identify and classify the existence of lung cancer using medical images.The recently developed deep learning(DL)models find a way for accurate lung nodule classification process.Therefore,this article presents a deer hunting optimization with deep convolutional neural network for lung cancer detection and classification(DHODCNNLCC)model.The proposed DHODCNN-LCC technique initially undergoes pre-processing in two stages namely contrast enhancement and noise removal.Besides,the features extraction process on the pre-processed images takes place using the Nadam optimizer with RefineDet model.In addition,denoising stacked autoencoder(DSAE)model is employed for lung nodule classification.finally,the deer hunting optimization algorithm(DHOA)is utilized for optimal hyper parameter tuning of the DSAE model and thereby results in improved classification performance.The experimental validation of the DHODCNN-LCC technique was implemented against benchmark dataset and the outcomes are assessed under various aspects.The experimental outcomes reported the superior outcomes of the DHODCNN-LCC technique over the recent approaches with respect to distinct measures.

关键词： Lung cancer image classification computer aided diagnosis deep learning medical imaging parameter optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vitamin D deficiency: Correlation to interleukin-17, interleukin-23 and PⅢNP in hepatitis C virus genotype 4

引用

World Journal of Gastroenterology 2012年第28期18卷 3738-3744页

作者： Mona f Schaalan Waleed A Mohamed hesham H Amin Department of Biochemistry Faculty of Pharmacy Misr International University Cairo 1 Egypt Department of Chemistry Cairo University Cairo 11562 Egypt Department of Clinical Pathology Faculty of Medicine AL Azhar University Cairo 147 Egypt

AIM: To assess vitamin D (Vit D) abnormalities in hepatitis C infected patients and their relationship with interleukin (IL)-17, IL-23 and N-terminal propeptide of type Ⅲ pro-collagen (PⅢNP) as immune response mediators. METHODS: The study was conducted on 50 Egyptian patients (36 male, 14 female) with hepatitis C virus (HCV) infection, who visited the Hepatology Outpatient Clinic in the Endemic Disease Hospital at Cairo University. Patients were compared with 25 ageand sexmatched healthy individuals. Inclusion criteria were based on a history of liver disease with HCV genotype 4 (HCV-4) infection (as new patients or under followup). Based on ultrasonography, patients were classified into four subgroups; 14 with bright hepatomegaly; 11 with perihepatic fibrosis; 11 with hepatic cirrhosis; and 14 with cirrhosis and hepatocellular carcinoma (HCC).Total Vit D (i.e., 25-OH-Vit D) and active Vit D [i.e., 1,25-(OH) 2 -Vit D] assays were carried out using commercial kits. IL-17, IL-23 and PⅢNP levels were assayed using enzyme linked immunosorbent assay kits, while HCV virus was measured by quantitative and qualitative polymerase chain reaction. RESULTS: Levels of Vit D and its active form were significantly lower in advanced liver disease (hepatic cirrhosis and/or carcinoma) patients, compared to those with bright hepatomegaly and perihepatic fibrosis. IL-17, IL-23 and PⅢNP levels were markedly increased in HCV patients and correlated with the progression of hepatic damage. The decrease in Vit D and active Vit D was concomitant with an increase in viral load, as well as levels of IL-17, IL-23 and PⅢNP among all subgroups of HCV-infected patients, compared to normal healthy controls. A significant negative correlation was evident between active Vit D and each of IL-17, IL-23 and PⅢNP (r = -0.679, -0.801 and -0.920 at P fected men and women showed no differences with respect to Vit D levels. The viral load was negatively correlated with Vit D and active Vit D (r = -0.084 and -0.846 at P < 0.0

关键词：维生素D缺乏症丙型肝炎病毒白细胞介素17 基因型 NP 酶联免疫吸附测定 IL-17 病毒感染

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

多中心随机对照试验:再生复原技术治疗各种开放性创面的疗效评价

引用

中国烧伤创疡杂志 2013年第3期25卷 211-229页

作者： Mahmoud f.Sakr 王乡宁付子俊 Hossam hamed hesham El-Torky 亚历山大大学医学部外科四川省雅安市人民医院烧伤整形科艾哈迈迪医院外科

目的评估再生疗法（MEBT／MEBO）治疗各种急慢性开放性创面的安全性和有效性。方法将2007年1月至2012年1月期间因各种开放性创伤就诊于3家不同医院的276例患者（376处创面）随机分组，接受MEBT／MEBO治疗（1组：患者141例，创面190处）... 详细信息

目的评估再生疗法（MEBT／MEBO）治疗各种急慢性开放性创面的安全性和有效性。方法将2007年1月至2012年1月期间因各种开放性创伤就诊于3家不同医院的276例患者（376处创面）随机分组，接受MEBT／MEBO治疗（1组：患者141例，创面190处）或生理盐水湿敷治疗（2组：患者135例，创面186处）。前瞻性收集人口统计学、诱发疾病、合并症和创面特征等数据；每隔2周计算和对比刨面面积和愈合指数，持续12周；记录治疗后24周的二次截肢情况。结果开放性创伤包括慢性褥疮（202处）、糖尿病足溃疡（119处）和各种其它创面（55处）。受试患者中171例（63％）为男性，105例（37％）为女性；年龄介于5～102岁，平均年龄63岁±14．5岁。两组患者在人口统计学、临床特点、生化检查和创面特征方面接近。MEBT／MEBO治疗组在治疗2周时，其愈合指数显著升高、创面面积显著缩小；在12周时，MEBT／MEBO组中66．3％（126／190）的创面实现了完全愈合（HI=1），而生理盐水湿敷组仅22．6％（42／186）的创面完全愈合（，=71．4，P=0．000）。治疗12周时，MEBT／MEBO组无l例患者的愈合指数〈0．5；而生理盐水湿敷组38．7％（72／186）的患者愈合指数〈0．5X=165，P=0．000）。两组患者均无不良反应或过敏反应发生。治疗后24周，与生理盐水湿敷组相比，MEBT／MEBO治疗组的二次截肢率明显降低（3．3％：19．0％）（X。=7．52，P=0．006）。结论MEBT／MEBO不仅操作简便、使用安全，还能显著促进开放性创面的愈合，治疗2周就可显著提高创面愈合指数，12周时几乎2／3的创面可完全愈合，24周时糖尿病足溃疡患者中发生二次截肢的患者明显减少。

关键词：再生疗法褥疮糖尿病足开放性创面

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Application of Plant Growth-Promoting Bacteria as an Eco-friendly Strategy for Mitigating the Harmful Effects of Abiotic Stress on Plants

引用

Phyton-International Journal of Experimental Botany 2023年第12期92卷 3305-3321页

作者： Ahmed Hassan Abdou Omar Abdullah Alkhateeb Hossam Eldin hamed Mansour hesham S.Ghazzawy Muayad Saud Albadrani Nadi Awad Al-harbi Wasimah B.Al-Shammari Khaled Abdelaal Social Studies Department College of ArtsKing Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Agribusiness and Consumer Sciences College of Agriculture&Food SciencesKing Faisal UniversityAl-Ahsa31982Saudi Arabia Agribusiness and Consumer Sciences Department College of Agricultural and Food SciencesKing Faisal UniversityAl-Ahsa31982Saudi Arabia Date Palm Research Center of Excellence King Faisal UniversityAl-Ahsa31982Saudi Arabia Department of family and Community Medicine College of MedicineTaibah UniversityAl-Madinah Al-Munawara42353Saudi Arabia Biology Department University College of TaymaUniversity of TabukTabukSaudi Arabia Department of Biology College of ScienceUniversity of HailP.O.Box 2440Hail55476Saudi Arabia EPCRS Excellence Center Plant Pathology and Biotechnology LaboratoryAgricultural Botany DepartmentFaculty of AgricultureKafrelsheikh University33516Egypt

Plant growth-promoting bacteria(PGPB)play an important role in improving agricultural production under several abiotic stress factors.PGPB can be used to increase crop growth and development through hormonal balance and increase nutrient uptake.The positive effect of PGPB may be due to its pivotal role in morphophysiological and biochemical characteristics like leaf number,leaf area,and stem length.furthermore,relative water content,chlorophyll content,carotenoids,antioxidant enzymes,and plant hormones were improved with PGPB treatment.Crop yield and yield components were also increased with PGPB treatment in numerous crops.The anatomical structure of plant organs was increased such as lamina thickness,stem diameter,xylem vessel diameter,and number of xylem vessels as well as phloem thickness under treatment with PGPB.Additionally,PGPB can alleviate the negative effects of several abiotic stresses by regulating the antioxidant defense system to scavenge the reactive oxygen species resulting in an improvement of yield production in the stressed plants.Additionally,gene expressions were controlled by calcium ion modulation during secondary messengers that act upon calcium-dependent protein kinase and protein phosphatases.This includes many transcription factors such as MYB,AP2/ERf,bZIP,and NAC which regulate genes related to salinity stress signals.PGPB can demonstrate induction genes of signaling under abiotic stress conditions.This review gives an outline of the PGPB role in alleviating the harmful effects of abiotic factors such as salinity,drought,and heat associated with the improvement of the morpho-physiological and biochemical features especially,leaves and branches number,leaf area,antioxidant compounds,plant hormones,and relative water content.

关键词： PGPB salinity drought heat reactive oxygen species antioxidants gene expressions

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inhibition of miR397 by STTM technology to increase sweetpotato resistance to SPVD

引用

Journal of Integrative Agriculture 2022年第10期21卷 2865-2875页

作者： LI Chen LIU Xuan-xuan ABOUELNASR hesham MOhamed hamed Arisha KOU Meng TANG Wei YAN Hui WANG Xin WANG Xiao-xiao ZHANG Yun-gang LIU Ya-ju GAO Run-fei MA Meng LI Qiang Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District/Sweetpotato Research Institute Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding of SweetpotatoMinistry of Agriculture and Rural AffairsXuzhou 221131P.R.China School of Life Science Jiangsu Normal UniversityXuzhou 221116P.R.China Plant Pathology Department Agriculture and Biology Research DivisionNational Research CenterGiza 12622Egypt Department of Horticulture Faculty of AgricultureZagazig UniversityZagazig 44511Egypt

As a critical food crop,sweetpotato(Ipomoea batatas(L.)Lam.)is widely planted all over the world,but it is deeply affected by Sweetpotato Virus Disease(SPVD).The present study utilized short tandem target mimic(STTM)technology to effectively up-regulate the expression of laccase(Ib LACs)by successfully inhibiting the expression of mi R397.The upstream genes in the lignin synthesis pathway were widely up-regulated by feedback regulation,including phenylalanine ammonialyase(PAL),4-coumarate-Co Aligase(4 CL),hydroxycinnamoyl Co A:shikimatetransferase(HTC),caffeicacid O-methyltransferase(COMT),and cinnamyl alcohol dehydrogenase(CAD).Meanwhile,the activities of PAL and LAC increased significantly,finally leading to increased lignin content.Lignin deposition in the cell wall increased the physical defence ability of transgenic sweetpotato plants,reduced the accumulation of SPVD transmitted by Bemisia tabaci(Gennadius),and promoted healthy sweetpotato growth.The results provide new insights for disease resistance breeding and green production of sweetpotato.

关键词： sweetpotato miR397 STTM SPVD lignin content

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Performance Analysis on a Dual External Cavity Tunable Laser ECTL Source

引用

Journal of Electromagnetic Analysis and Applications 2015年第4期7卷 134-139页

作者： Ahmed fawzy Osama M. El-Ghandour hesham f. A. hamed Department of Electrical Engineering Minia University Minia Egypt Department of Electronics Communications and Computer Engineering Helwan University Cairo Egypt

This paper presents the diffraction effects on the performance of a dual external cavity tunable laser source, whose external cavities are constructed by micro electro mechanical systems (MEMS). One of the main problems in these structures is the optical diffraction as the emitting surface of the laser diode is usually quite limited in the transverse directions. The emitted beam diffracts rapidly in the air and only a small amount of light is coupled back to the source that usually limits the tuning range of the source. Device characteristics such as tuning range, wavelength shift and sensitivity are evaluated. New expression is used and multiple reflections inside external cavities are considered. The simulation results have shown that single external cavity has limited tuning range. It is shown that multiple reflections have significant effect in our model. To get a better engineering for the dual ECTL dimensions, diffraction effects must be taken into account.

关键词： External Cavity Laser Tunable Laser MEMS Optical Diffraction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Performance Enhancement for Adaptive Beam-forming Application Based Hybrid PSOGSA Algorithm

引用

Journal of Electromagnetic Analysis and Applications 2015年第4期7卷 126-133页

作者： Ahmed Magdy Osama M. EL-Ghandour hesham f. A. hamed Department of Electrical Engineering Minia University Minia Egypt Department of Electronics Communications and Computer Engineering Helwan University Cairo Egypt

Recently researchers were interested in hybrid algorithms for optimization problems for several communication systems. In this paper, a novel algorithm based on hybrid PSOGSA technique (combination of Gravitational Search Algorithm and Particle Swarm Optimization) is presented to enhance the performance analysis of beam-forming for smart antennas systems using N elements for Uniform Circular Array (UCA) geometry. Complex excitations (phases) of the array radiation pattern are optimized using hybrid PSOGSA technique for a set of simultaneously incident signals. Our results have shown tremendous improvement over the previous work was done using Uniform Linear Array (ULA) geometry and standard GSA in terms of normalized array factor and computational speed for normalized fitness values.

关键词： Smart Antennas UCA Optimization Techniques Beam-forming

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Exogenous Selenium Mitigates Salt Stress in Soybean by Improving Growth,Physiology,Glutathione Homeostasis and Antioxidant Defense

引用

Phyton-International Journal of Experimental Botany 2021年第2期90卷 373-388页

作者： hesham f.Alharby Mirza Hasanuzzaman Hassan S.Al-Zahrani Khalid Rehman Hakeem Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia Department of Agronomy Sher-e-Bangla Agricultural UniversityDhaka1207Bangladesh

The mechanism of selenium(Se)-induced salt tolerance was studied in moderately sensitive soybean(Glycine max L.)plants.To execute this view,soybean plants were imposed with salt stress(EC 6 dS m^(−1))applying NaCl.In other treatments,Se(0,25,50 and 75μM Na_(2)SeO_(4))was sprayed as co-application with that level of salt stress.Plant height,stem diameter,leaf area,SPAD value decreased noticeably under salt stress.Altered proline(Pro)level,together with decreased leaf relative water content(RWC)was observed in salt-affected plants.Salt stress resulted in brutal oxidative damage and increased the content of H_(2)O_(2),MDA level and electrolyte leakage.Exogenous Se spray alleviated oxidative damage through boosting up the antioxidant defense system by increasing the activity of antioxidant enzymes such as catalase(CAT),peroxidase(POD)and glutathione reductase(GR),as well as by improving non-enzymatic antioxidants like glutathione(GSH)and GSH/glutathione disulfide(GSSG).The upregulated antioxidant defense system,restored Pro and leaf RWC,higher SPAD value conferred better growth and development in Se-sprayed salt-affected soybean plants which altogether put forth for the progressive yield contributing parameters and finally,seed yield.Among different doses of Se,soybean plants sprayed with 50μM Na_(2)SeO_(4)showed better salt tolerance.

关键词： Trace elements selenium antioxidant system oxidative stress salinity oilseed crop

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：