检索结果-南通市图书馆

Pile foundation in alternate layered liquefiable and non-liquefiable soil deposits subjected to earthquake loading

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2024年第2期23卷 359-376页

作者： Praveen Huded m Suresh R Dash LEA Associates South East Asia Pvt.Ltd. New Delhi 110044India Indian Institute of Technology Bhubaneswar Khurda 752050India

Pile foundations are still the preferred foundation system for high-rise structures in earthquake-prone *** foundations have experienced failures in past earthquakes due to *** on pile foundations in liquefiable soils has primarily focused on the pile foundation behavior in two or three-layered soil ***,in natural occurrence,it may occur in alternative layers of liquefiable and non-liquefiable ***,the experimental and/or numerical studies on the layered effect on pile foundations have not been widely addressed in the *** of the design codes across the world do not explicitly mention the effect of sandwiched non-liquefiable soil layers on the pile *** the present study,the behavior of an end-bearing pile in layered liquefiable and non-liquefiable soil deposit is studied *** study found that the kinematic bending moment is higher and governs the design when the effect of the sandwiched non-liquefied layer is considered in the analysis as opposed to when its effect is ***,ignoring the effect of the sandwiched non-liquefied layer in a liquefiable soil deposit might be a nonconservative design approach.

关键词： pile foundation liquefaction alternately layered soil fixity effect layered effect

magnetic,dielectric and electrical modulus of Ce^(3+) doped cobalt-magnesium ferrite nanoparticles

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第2期42卷 373-382,I0005页

作者： N.m.Basfer Hanaa Almaghamsi Department of Physics Umm AL-Qura UniversityMakkahSaudi Arabia Physics Department College of Science and ArtKing Abdulaziz UniversityPOB344Rabigh291Saudi Arabi

In this work,the magnetic,dielectric properties and electric modulus of Ce^(3+) substituted cobaltmagnesium(Co_(0.7)mg_(0.3)Ce_(x)Fe_(2-x)O_4)(labeled as CmCF) ferrite nanoparticles were investigated in *** magnetization decreases from 50.05 to 34.87 emu/g for further substituting Ce^(3+) ***,coercivity increases from 738.22 Gs for the CmCFO sample to 912.10 Gs for the CmCF2 sample,then decreases monotonically to 762.1 Gs for the CmCF5 *** cerium content and particle size play important roles in controlling the magnetization and coercivity of the CmCF *** CmCF nanoferrites are suitable for microwave applications since their high-frequency response ranges from 7.72 to 11.07 *** CmCF nanoferrites' dielectric parameter dispersion exhibits normal *** pristine Co-mg nanoferrite only has ε' value of 28.25,but the nanoferrite mCmF2 has ε' value of365.03,with an enhancing ratio of 1192%.The conduction mechanism of the mCmF nanoferrites was determined by fitting the σ_(ac) results via the Jonscher power *** 653 K,large polaron tunnelling is thought to be responsible for this conduction process,which is followed by electron barrier hopping at higher ***-Cole diagrams at different temperatures,assuring the contributions of the grains and their boundaries at lower temperatures(653 K) and only the grains at higher *** on our results,the CmCF nanoferrites hold magnetic and semiconducting nature,which can be used in magnetic devices and dielectrics in lower-frequencies or conductors in higher-frequencies.

关键词： Nanoferrites Rare earth ions magnetic properties Dielectric parameters Impedance spectroscopy

Emotion Detection using ECG Signals and a Lightweight CNN model

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2024年第5期48卷 1193-1211页

作者： Amita u.Dessai Hassanali G.Virani Department of Electronics and Telecommunication Engineering Goa College of EngineeringGoa UniversityPonda403401India

Emotion recognition is a growing field that has numerous applications in smart healthcare systems and Human-Computer Interaction(HCI).However,physical methods of emotion recognition such as facial expressions,voice,and text data,do not always indicate true emotions,as users can falsify *** the physiological methods of emotion detection,Electrocardiogram(ECG)is a reliable and efficient way of detecting ***-enabled smart bands have proven effective in collecting emotional data in uncontrolled *** use deep machine learning techniques for emotion recognition using ECG signals,but there is a need to develop efficient models by tuning the ***,most researchers focus on detecting emotions in individual settings,but there is a need to extend this research to group settings aswell since most of the emotions are experienced in *** this study,we have developed a novel lightweight one dimensional(1D)Convolutional Neural Network(CNN)model by reducing the number of convolution,max pooling,and classification *** optimization has led to more efficient emotion classification using *** tested the proposed model’s performance using ECG data from the AmIGOS(A Dataset for Affect,Personality and mood Research on Individuals andGroups)dataset for both individual and group *** results showed that themodel achieved an accuracy of 82.21%and 85.62%for valence and arousal classification,respectively,in individual *** group settings,the accuracy was even higher,at 99.56%and 99.68%for valence and arousal classification,*** reducing the number of layers,the lightweight CNNmodel can process data more quickly and with less complexity in the hardware,making it suitable for the implementation on the mobile phone devices to detect emotions with improved accuracy and speed.

关键词： Emotions AmIGOS ECG lightweight 1D CNN

Biomathematical study of time-dependent flow of a Carreau nanofluid through inclined catheterized arteries with overlapping stenosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Central South university 2017年第11期24卷 2725-2744页

作者： Ashfaq Ahmed sohail Nadeem Department of mathematics Quaid-I-Azam UniversityIslamabad 45320Pakistan

This work is concerned with the analysis of blood flow through inclined catheterized arteries having a balloon(angioplasty) with time-variant overlapping stenosis. The nature of blood in small arteries is analyzed mathematically by considering it as a Carreau nanofluid. The highly nonlinear momentum equations of nanofluid model are simplified by considering the mild stenosis case. The formulated problem is solved by a homotopy perturbation expansion in terms of a variant of the Weissenberg number to obtain explicit forms for the axial velocity, the stream function, the pressure gradient, the resistance impedance and the wall shear stress distribution. These solutions depend on the Brownian motion number, thermophoresis number, local temperature Grashof number G_r and local nanoparticle Grash of number B_r. The results were also studied for various values of the physical parameters, such as the Weissenberg number W_i, the power law index n, the taper angle φ, the maximum height of stenosis δ~*, the angle of inclination α, the maximum height of balloon σ~*, the axial displacement of the balloon z_d~*,the flow rate F and the Froud number Fr. The obtained results show that the transmission of axial velocity curves through a Newtonian fluid(Wi=0, n=1, Gr=0, Br=0, Nt=0, Nb≠0) is substantially lower than that through a Carreau nanofluid near the wall of balloon while the inverse occurs in the region between the balloon and stenosis. The streamlines have a clearly distinguished shifting toward the stenotic region and this shifting appears near the wall of the balloon, while it has almost disappeared near the stenotic wall and the trapping bolus in the case of horizontal arteries and Newtonian fluid(Wi=0, n=1, Gr=0, Br=0, Nt=0, Nb≠0) does not appear but for the case of Carreau nanofluid bolus appears.

关键词： overlapping stenosed artery nanofluid Grashof number Brownian motion thermophoresis pharmacology

Fractional diffusion-advection equation with resetting:An analytical approach

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2024年第3期9卷 216-221页

作者： Ashraf m.Tawfik m.A.Abdou Theoretical Physics Research Group Physics DepartmentFaculty of ScienceMansoura UniversityMansoura 35516Egypt Physics Department College of ScienceUniversity of BishaPO Box 344Bisha 61922Kingdom of Saudi Arabia

In this article,the fractional diffusion-advection equation with resetting is introduced to promote the theory of anomalous *** fractional equation describes a particle’s non-diffusive motion performing a random walk and is reset to its initial *** analytical method is proposed to obtain the solution of the fractional equation with resetting via Fourier and Laplace *** study the influence of the fractional-order and resetting rate on the probability distributions,and the mean square displacements are analyzed for different cases of anomalous regimes.

关键词： Fractional calculus Anomalous diffusion Stochastic resetting

An Adaptive Hate Speech Detection Approach using Neutrosophic Neural Networks for Social media Forensics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, materials & Continua 2024年第4期79卷 243-262页

作者： Yasmine m.Ibrahim Reem Essameldin Saad m.Darwish Department of Information Technology Institute of Graduate Studies and ResearchAlexandria UniversityAlexandria21526Egypt Faculty of Computers and Information Technology Egyptian E-Learning University(EELU)Giza12611Egypt Faculty of Computers and Data Science Alexandria UniversityAlexandria21554Egypt

Detecting hate speech automatically in social media forensics has emerged as a highly challenging task due tothe complex nature of language used in such platforms. Currently, several methods exist for classifying hatespeech, but they still suffer from ambiguity when differentiating between hateful and offensive content and theyalso lack accuracy. The work suggested in this paper uses a combination of the Whale Optimization Algorithm(WOA) and Particle Swarm Optimization (PSO) to adjust the weights of two multi-Layer Perceptron (mLPs)for neutrosophic sets classification. During the training process of the mLP, the WOA is employed to exploreand determine the optimal set of weights. The PSO algorithm adjusts the weights to optimize the performanceof the mLP as fine-tuning. Additionally, in this approach, two separate mLP models are employed. One mLPis dedicated to predicting degrees of truth membership, while the other mLP focuses on predicting degrees offalse membership. The difference between these memberships quantifies uncertainty, indicating the degree ofindeterminacy in predictions. The experimental results indicate the superior performance of our model comparedto previous work when evaluated on the Davidson dataset.

关键词： Hate speech detection whale optimization neutrosophic sets social media forensics

Battery health management-a perspective of design,optimization,manufacturing,fault detection,and recycling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Storage and Saving 2024年第3期3卷 190-208页

作者： Pavel m.Roy Harsh H.Sawant Pratik P.Shelar Prashil u.Sarode S.H.Gawande Industrial Tribology Laboratory Department of Mechanical EngineeringM.E.S.College of EngineeringSavitribai Phule Pune UniversityPune411007India

This paper explores the key aspects of battery technology,focusing on lithium-ion,lead-acid,and nickel metal hydride(NimH)*** delves into manufacturing processes and highlighting their significance in optimizing battery *** addition,the study investigates battery fault detection,emphasizing the importance of early diagnosis using artificial intellignece(AI)and machine learning(mL)*** paper also addresses battery recycling techniques,discussing methods such as pyrometallurgy,hydrometallurgy,mechanical separation,and electrodialysis,considering their environmental *** comprehensive analysis sheds light on the evolution of battery technology and its role in sustainable energy systems.

关键词： Battery health manufacturing Fault detection Recycling

Optimal Coordination of Transportable Power Sources and Repair Crews for Service Restoration of Distribution Networks Considering uncertainty of Traffic Congestion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of modern Power Systems and Clean Energy 2024年第1期12卷 189-201页

作者： Zhao Shi Yan Xu Dunjian Xie Shiwei Xie Amer m.Y.m.Ghias Nanyang Technological university Singapore the School of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108China

This paper proposes a new method for service restoration of distribution network with the support of transportable power sources(TPSs)and repair crews(RCs).Firstly,a coupling model of distribution networks and vehicle routing of TPSs and RCs is proposed,where the TPSs serve as emergency power supply sources,and the RCs are used to repair the faulted *** the uncertainty of traffic congestion,the probability distribution of the travel time spent on each road is derived based on the Nesterov user equilibrium model,and a two-stage stochastic program is formulated to determine the optimal routings of TPSs and *** efficiently solve the proposed stochastic mixed-integer linear program(mILP),a two-phase scenario reduction method is then developed to scale down the problem size,and an adaptive progressive hedging algorithm is used for an efficient *** effectiveness of the proposed methods and algorithms has been illustrated in a modified IEEE 33-bus system.

关键词： Service restoration distribution network traffic uncertainty transportable power source repair crew stochastic program

Bird species present in urban parks are more colorful than urban avoiders:A test in the Argentinian Pampas

在线全文

学校读者我要写书评

暂无评论

Avian Research 2024年第1期15卷 22-26页

作者： Lucas m.Leveau Departamento de Ecología Genetica y EvolucionFacultad de Ciencias Exactas y NaturalesUniversidad de Buenos Aires-IEGEBA(CONICET-UBA)Intendente Güiraldes 2160Ciudad UniversitariaC1428EGABuenos AiresArgentina

Bird plumage color has been assessed as a possible trait driving the presence of bird species in urban *** some species can see the ultraviolet(uV) spectrum,the mentioned studies did not take into account uV reflectance when characterizing bird *** study aimed to use a recent database of the colorfulness in passerines that incorporated the uV spectrum to compare bird colorfulness and other traits between urban parks and rural areas in Central-East *** in urban parks were surveyed in 51 parks in 6 cities during breeding and non-breeding seasons.A list of Passeriformes species from parks was created,and a list of urban avoider species was created from the *** traits were body mass,clutch size,migratory status,nesting site,diet and habitat breadth,and plumage colorfulness.A total of 85 species were detected in the regional pool,of which 30 species were detected in urban *** species present in urban parks were more colorful than bird species only present in rural *** addition,bird presence in urban parks was positively related to their regional frequency and diet ***,urban presence was related to nesting on trees and buildings,whereas species not present in urban parks nested on the *** results obtained showed that bird color is significantly associated with presence of bird species in urban parks.

关键词： Avian Filter Phenotype Selection ultraviolet