检索结果-南通市图书馆

Security and Privacy in Solar Insecticidal Lamps Internet of Things:Requirements and Challenges

IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 58-73页

作者： Qingsong Zhao Lei Shu Kailiang Li mohamed amine Ferrag Ximeng Liu Yanbin Li the College of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031 the State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023 the State Key Laboratory of Cryptology Beijing 100878China IEEE the School of Engineering University of LincolnLincoln LN67TSUK the Artificial Intelligence and Digital Science Research Center Technology Innovation InstituteMasdar City 9639UAE the College of Computer and Data Science Fuzhou UniversityFuzhou 350108China

Solar insecticidal lamps(SIL) can effectively control pests and reduce the use of pesticides. Combining SIL and Internet of Things(IoT) has formed a new type of agricultural IoT,known as SIL-IoT, which can improve the effectiveness of migratory phototropic pest control. However, since the SIL is connected to the Internet, it is vulnerable to various security *** issues can lead to serious consequences, such as tampering with the parameters of SIL, illegally starting and stopping SIL,etc. In this paper, we describe the overall security requirements of SIL-IoT and present an extensive survey of security and privacy solutions for SIL-IoT. We investigate the background and logical architecture of SIL-IoT, discuss SIL-IoT security scenarios, and analyze potential attacks. Starting from the security requirements of SIL-IoT we divide them into six categories, namely privacy, authentication, confidentiality, access control, availability,and integrity. Next, we describe the SIL-IoT privacy and security solutions, as well as the blockchain-based solutions. Based on the current survey, we finally discuss the challenges and future research directions of SIL-IoT.

关键词： Challenges Internet of Things(IoT) privacy and security security requirements solar insecticidal lamps(SIL)

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

Surgical Management of Uterine Fibroids: About 175 Cases

引用

Open Journal of Obstetrics and Gynecology 2023年第3期13卷 481-489页

作者： Ngom Papa Malick Faye Marie Edouard Gaye Yaye Fatou Sylla Mafing Aya Niang Ndama Samb Abdoulaye Ndiogou Bentaleb Hajar inzale mohamed amine Koné Madjiguène Department of Obstetrics Gynecology Hospital Principal Dakar Dakar Senegal Department of Anesthesia Hospital Principal Dakar Dakar Senegal

Background: Uterine fibroids are a common condition in Senegal and often symptomatic. Our study aims to determine the epidemiological profile, to clarify the diagnostic aspects and to evaluate the surgical management of patients with uterine fibroids. Patients and Method: We carried out a retrospective and descriptive study carried out over a period of 30 months, from August 1, 2017 to January 31, 2020, concerning all patients who underwent surgery for the treatment of uterine myomatosis in the department of Gynecology Obstetrics of the Hospital Principal of Dakar. The data was collected from the patients’ medical records and analyzed using Excel version 2016 and R version 4 software. Results: We collected 175 surgical interventions for uterine fibroids, representing 44.7% of gynecological interventions. Most of the patients were between 30 and 39 years old, with an average age of 39 years. The nulliparous were the majority with 64.6%. The clinical symptomatology was represented by genital bleeding (32.6%), pelvic pain (18.85%) and infertility (12.6%). The diagnosis was confirmed by pelvic ultrasound in all patients with variable myoma topography. A myomectomy was performed in 82.3% of cases and a total hysterectomy in 17.7%. The postoperative course was simple in 94.2% of cases, and the results of treatment revealed a disappearance of symptoms in 94.3% of cases. Conclusion: Surgery occupies a prominent place in the management of uterine fibroids.

关键词： Uterine Fibroid Myomectomy Pelvic Ultrasound

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

Management and Maternal-Fetal Prognosis of Placental Abruption: A Retrospective Study of 130 Cases

引用

Open Journal of Obstetrics and Gynecology 2022年第7期12卷 590-598页

作者： Papa Malick Ngom Faye Marie Edouard Gaye Yaye Fatou Sylla Mafing Aya Tine Marguerite Ndew inzale mohamed amine Bentaleb Hajar Fall Khadidja Koné Madjiguène Fall Mouhamadou Mansour Department of Obstetrics Gynecology Dakar Principal Hospital Dakar Sénégal Gynecological and Obstetrical Clinic Hopital Aristide Le Dantec Dakar Sénégal Department of Neonatology Dakar Principal Hospital Dakar Sénégal Department of Anesthesia Dakar Principal Hospital Dakar Sénégal Resuscitation Service Dakar Principal Hospital Dakar Sénégal

Objective: To describe the epidemiological, clinical and prognostic factors and assess treatment of placental abruption in the obstetrics gynecology department of the Dakar Principal Hospital. Patients and Method: We carried out a retrospective observational study of 130 successive cases of placental abruption, which occurred from January 2015 to December 2017 at the Level 3 Maternity Unit of the Dakar Principal Hospital. Data were collected from non-computerized obstetric records and analyzed using Excel and Epi info software. Results: There were 130 cases of placental abruption, that is a prevalence of 1.5%. The average age of onset of placental abruption was 30 years. The history of hypertension concerned 32.3% of patients, the average gestational age of 32.5 weeks at the time of diagnosis, grade 3 of Sher was found in 48.5% of cases. The outcome of the pregnancy was a caesarean section in 79.2% of cases, the average weight of newborns was 2058 g. The management of the complications required a blood transfusion and intensive care. A haemostasis hysterectomy was performed in 6.2% of cases. Stillbirth rate was 53.7% and maternal mortality was zero. Discussion and Conclusion: Placental abruption, a severe complication of pregnancy, is associated with high perinatal morbidity and mortality linked to the severity of the clinical picture, despite an improved maternal prognosis.

关键词： Placental Abruption Perinatal Mortality Maternal Morbidity

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

Cyber Security Intrusion Detection for Agriculture 4.0: Machine Learning-Based Solutions, Datasets,and Future Directions

引用

IEEE/CAA Journal of Automatica Sinica 2022年第3期9卷 407-436页

作者： mohamed amine Ferrag Lei Shu Othmane Friha Xing Yang Department of Computer Science Guelma UniversityB.P.40124000Algeria IEEE College of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031China School of Engineering University of LincolnLincoln LN67TSUK Networks and Systems Laboratory(LRS) University of Badji Mokhtar-AnnabaB.P.12Annaba 23000Algeria College of Engineering Nanjing Agricultural UniversityNanjing 210031China

In this paper,we review and analyze intrusion detection systems for Agriculture 4.0 cyber ***,we present cyber security threats and evaluation metrics used in the performance evaluation of an intrusion detection system for Agriculture ***,we evaluate intrusion detection systems according to emerging technologies,including,Cloud computing,Fog/Edge computing,Network virtualization,Autonomous tractors,Drones,Internet of Things,Industrial agriculture,and Smart *** on the machine learning technique used,we provide a comprehensive classification of intrusion detection systems in each emerging ***,we present public datasets,and the implementation frameworks applied in the performance evaluation of intrusion detection systems for Agriculture ***,we outline challenges and future research directions in cyber security intrusion detection for Agriculture 4.0.

关键词： Agriculture 4.0 cyber security intrusion detectionsystem machine learning approaches smart agriculture

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

Static and dynamic stability responses of multilayer functionally graded carbon nanotubes reinforced composite nanoplates via quasi 3D nonlocal strain gradient theory

引用

Defence Technology（防务技术） 2022年第10期18卷 1778-1809页

作者： Ahmed amine Daikh mohamed Sid Ahmed Houari mohamed Ouejdi Belarbi Salwa A.mohamed mohamed A.Eltaher Laboratoire D'Etude des Structures et de Mecanique des Materiaux Departement de Genie CivilFacultedes Sciences et de La TechnologieUniversite Mustapha Stambouli B.P.305R.P.29000MascaraAlgeria Laboratoire de Genie Energetique et Materiaux LGEMUniversite de BiskraB.P.145R.P07000BiskraAlgeria Department of Engineering Mathematics Zagazig UniversityP.O.Box 44519ZagazigEgypt Faculty of Engineering Mechanical Engineering DepartmentKing Abdulaziz UniversityP.O.Box 80204JeddahSaudi Arabia Faculty of Engineering Mechanical Design and Production DepartmentZagazig UniversityP.O.Box 44519ZagazigEgypt

This manuscript presents the comprehensive study of thickness stretching effects on the free vibration,static stability and bending of multilayer functionally graded(FG)carbon nanotubes reinforced composite(CNTRC)*** nanoscale and microstructure influences are considered through a modified nonlocal strain gradient continuum *** on power-law functions,four different patterns of CNTs distribution are considered in this analysis,a uniform distribution UD,FG-V CNTRC,FG-X CNTRC,and FG-O CNTRC.A 3D kinematic shear deformation theory is proposed to include the stretching influence,which is neglected in classical ***'s principle is applied to derive the governing equations of motion and associated boundary *** solutions are developed based on Galerkin method to solve the governing equilibrium equations based on the generalized higher-order shear deformation theory and the nonlocal strain gradient theory and get the static bending,buckling loads,and natural frequencies of *** with previous works is presented.A detailed parametric analysis is carried out to highlight the impact of thickness stretching,length scale parameter(nonlocal),material scale parameter(gradient),CNTs distribution pattern,geometry of the plate,various boundary conditions and the total number of layers on the stresses,deformation,critical buckling loads and vibration *** new results are also reported in the current study,which will serve as a benchmark for future research.

关键词： 3D shear deformation theory Free vibration Buckling Bending Galerkin method Functionally graded nanotube Nonlocal strain gradient theory

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

Modeling and Analysis of UAV-Assisted Mobile Network with Imperfect Beam Alignment

引用

Computers, Materials & Continua 2023年第1期74卷 453-467页

作者： mohamed amine Ouamri Reem Alkanhel Cedric Gueguen Manal Abdullah Alohali Sherif S.M.Ghoneim University of Rennes 1/ADOPNET team at IRISA laboratory Rennes35000France Facultéde Technologie Laboratoire d’Informatique Médicale(LIMED)Universitéde BejaiaBejaia06000Algérie Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Electrical engineering department College of EngineeringTaif University P.O.Box 11099Taif21944Saudi Arabia

With the rapid development of emerging 5G and beyond(B5G),Unmanned Aerial Vehicles(UAVs)are increasingly important to improve the performance of dense cellular *** a conventional metric,coverage probability has been widely studied in communication systems due to the increasing density of users and complexity of the heterogeneous *** recent years,stochastic geometry has attracted more attention as a mathematical tool for modeling mobile network *** this paper,an analytical approach to the coverage probability analysis of UAV-assisted cellular networks with imperfect beam alignment has been *** assumption was considered that all users are distributed according to Poisson Cluster Process(PCP)around base stations,in particular,Thomas Cluster Process(TCP).Using thismodel,the impact of beam alignment errors on the coverage probabilitywas ***,the ProbabilityDensity Function(PDF)of directional antenna gain between the user and its serving base station was ***,association probability with each tier was achieved.A tractable expression was derived for coverage probability in both Line-of-Sight(LoS)andNon-Line-of-Sight(NLoS)condition *** results demonstrated that at low UAVs altitude,beam alignment errors significantly degrade coverage ***,for a small cluster size,alignment errors do not necessarily affect the coverage performance.

关键词： Unmanned aerial vehicles coverage analysis stochastic geometry millimeter wave imperfect beam alignment

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

Sanitary Evacuations at the Maternity Unit of the Social Hygiene Institute (IHS) in Dakar in 2020

引用

Advances in Reproductive Sciences 2023年第4期11卷 151-158页

作者： Mouhamadou Mansour Niang Mohamaed amine inzale Fatou Samb Cheikh Tidiane Cisse Department of Gynecology-Obstetrics Hospital Institute of Social Hygiene of Dakar Dakar Senegal

Objective: Determine the frequency of evacuations, specify the epidemiological and clinical characteristics of the evacuees, evaluate the data of the evacuation, the management and the maternal-fetal prognosis. Methods: Prospective and descriptive retrospective study concerning obstetrical evacuations received at the maternity ward of the Hospital of the Institute of Social Hygiene in Dakar between January 1 and December 31, 2020, i.e. a period of 12 months. Results: During the study period, we collected 1156 evacuees out of a total of 3507 patients treated in the Service, i.e. a frequency of 33%. The average age of the patients was 27.07 years with extremes of 14 and 46 years. Patients aged between 20 and 29 were the most represented (51.73%). The average parity was 1.6 with extremes of 0 and 10 pares. The nulliparous (46.37%) were the majority. The majority of evacuated patients (99.6%) resided in the Dakar region, including 58% in the suburbs and 42% in the city center. The patients received had performed an average of 3 prenatal consultations with extremes ranging from 0 to 9 CPN. They most often came from health centers (55.05%) or hospitals (29.09%). The reasons for evacuations were dominated by dystocia (21.54%) followed by premature rupture of membranes (17.21%) and premature deliveries (16.35%). On admission, only 176 patients (15.2%) had an evacuation sheet. Patients transited on average through two health structures (extremes ranging from 0 to 7 structures) before reaching the reception structure. The evacuation was most often done with a private vehicle on the patient’s own means (91.96%). The outcome of the evacuees was most often vaginal delivery or hospitalization (72.79%). The majority of patients (99.4%) had evolved favorably but we deplore one maternal death (0.09%) linked to a late puerperal infection. We recorded 74 perinatal deaths and 1041 live births, i.e. a stillbirth rate of 71.1‰ live births. The causes of death were dominated by prematurit

关键词： Obstetrical Evacuations Institute of Social Hygiene Maternal-Fetal Prognosis

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

Mechanical Characterisation of Interface for Steel/Polymer Composite Using Pull-out Test: Shear-Lag and Frictional Analysis

引用

Journal of Materials Science & Technology 2006年第4期22卷 552-558页

作者： mohamed KHARRAT Maher DAMMAK amine CHARFI Institut Préparatoire aux Etudes d'Ingénieurs de Sfax Tunisia Laboratoire des Systèmes ElectromécaniquesEcole Nationale d'Ingénieurs de SfaxTunisia Laboratoire des Systèmes Electromécaniques Ecole Nationale d'Ingénieurs de SfaxTunisia

Fibre-matrix interface is known to have contribution to the mechanical performance of fibre-reinforced composite by its potential for load transfer between the fibre and the matrix. Such load transfer is of great importance in dentistry when a post is used for fixing a ceramic crown on the tooth. In this study, a pull-out test was carried out to analyse the interfacial properties of a steel fibre embedded in a polyester and epoxy matrices. It was found that the fibre-matrix interface is debonded on the whole embedded length when the fibre stress reached the debonding stress. Then, the fibre stress fell down to the initial extraction stress required to pulling out the debonded fibre from the matrix. Both debonding stress and initial extraction stress initiated a linear increase with the implantation length after the debonding stress reached horizontal asymptotes. To analyse the fibre-matrix load transfer before debonding, an analytical shear-lag model was adopted to in this test conditions. Fitting the experimental results with the analytical model provided the interfacial shear strength. By considering the Coulomb friction at the fibre-matrix interface during the fibre extraction process, an analytical model which considers Poisson＇s effects on both fibre and matrix, was developed. In this model, knowledge of the initial extraction stress of the fibre provides the residual normal stress at the fibre-matrix interface.

关键词： Fibre Matrix Interface Pull-out Shear-lag Debonding Friction

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

Double Deep Q-Network Method for Energy Efficiency and Throughput in a UAV-Assisted Terrestrial Network

引用

Computer Systems Science & Engineering 2023年第7期46卷 73-92页

作者： mohamed amine Ouamri Reem Alkanhel Daljeet Singh El-sayed M.El-kenaway Sherif S.M.Ghoneim University Grenoble Alpes CNRSGrenoble INPLIGDRAKKAR Teams38000GrenobleFrance Laboratoire d’informatique Médical Universitéde BejaiaTarga OuzemourQ22R+475Algeria Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Research and Development Centre for Space ResearchSchool of Electronics and Electrical EngineeringLovely Professional UniversityPhagwara144411India Department of Communication and Electronics Delta Higher Institute of Engineering and TechnologyMansouraEgypt Electrical Engineering Department College of EngineeringTaif UniversityP.O.BOX 11099Taif21944Saudi Arabia

Increasing the coverage and capacity of cellular networks by deploying additional base stations is one of the fundamental objectives of fifth-generation(5G)***,it leads to performance degradation and huge spectral consumption due to the massive densification of connected devices and simultaneous access *** meet these access conditions and improve Quality of Service,resource allocation(RA)should be carefully ***,RA problems are nonconvex optimizations,which are performed using heuristic methods,such as genetic algorithm,particle swarm optimization,and simulated ***,the application of these approaches remains computationally expensive and unattractive for dense cellular ***,artificial intelligence algorithms are used to improve traditional RA *** learning is a promising tool for addressing resource management problems in wireless *** this study,we investigate a double deep Q-network-based RA framework that maximizes energy efficiency(EE)and total network throughput in unmanned aerial vehicle(UAV)-assisted terrestrial ***,the system is studied under the constraints of ***,the optimization problem is formulated as a mixed integer nonlinear *** this framework,we evaluated the effect of height and the number of UAVs on EE and ***,in accordance with the experimental results,we compare the proposed algorithm with several artificial intelligence *** results indicate that the proposed approach can increase EE with a considerable throughput.

关键词： UAV terrestrial network reinforcement learning mmWave resource allocation

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

Numerical investigation of the stresses in backfilled stopes overlying a sill mat

引用

Journal of Rock Mechanics and Geotechnical Engineering 2017年第3期9卷 108-119页

作者： mohamed amine Sobhi Li Li Research Institute on Mines and the Environment Department of Civil Geological and Mining Engineering école Polytechnique de Montréal MontréalCanada

Backfill is commonly used in underground mines to help increase the ore recovery rate and reduce the ore dilution. The use of a part of mine waste as underground backfill material also helps reduce the environmental impact of mining operations. After all, backfill is used to provide a working platform or safer working space. Its primary and most important role is to improve the rock mass stability around mine openings. However, most available solutions to stress analyses were developed for an isolated stope, without taking into account the influence of mine depth, or of adjacent stopes. In this paper,results from a numerical study carried out to evaluate the stresses in backfilled stopes overlying a sill mat are presented. Mine depth and excavation of the underlying stope below the sill mat(horizontal pillar)are both taken into consideration. The influence of stope geometry, backfill, sill mat and rock properties on the stresses is also evaluated. Compared with the case of a single isolated backfilled stope, the numerical results show that the stress magnitudes in the overlying backfill are considerably increased due to the excavation of the underlying stope. In general, the stresses also increase with mine depth and backfill stiffness, while these tend to decrease with an increase in the surrounding rock mass *** results suggest that existing solutions for backfill design may need to be revised.

关键词： Mine depth Backfill Sill mat Stresses Numerical modeling

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

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：