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Journal of Geoscience and Environment Protection 2023年第9期11卷 118-132页

作者： Şeyma merve Kaymaz mühling Shanghai China

The article discusses the application of artificial intelligence (AI) and automation in marine conservation, specifically in relation to the protection of marine ecosystems and the definition of marine protected areas (mPAs). It highlights the threats that marine ecosystems face due to human activities and emphasizes the importance of effective management and conservation efforts. By improving data gathering, processing, monitoring, and analysis, artificial intelligence, and automation, they can revolutionize marine research. In conclusion, this study emphasizes the importance of AI and automation in marine conservation responsibly and ethically. In order to integrate these technologies into decision-making processes, stakeholders and marine conservation professionals must collaborate. Through the use of artificial intelligence and automation, marine conservation efforts can be transformed by establishing new methods of collecting and analyzing data, making informed decisions, and managing marine ecosystems.

关键词： marine Protected Areas Artificial Intelligence Automation Decision-making Tools

Numerical simulation of high speed reacting shear layers using AUSm+-up scheme-based unstructured finite volume method solver

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International Journal of modeling, Simulation, and Scientific Computing 2017年第3期8卷 39-60页

作者： m.Deepu m.P.Dhrishit S Shyji Department of Aerospace Engineering Indian Institute of Space Science and Technology Thiruvananthapuram KeralaIndia-695547 Department of mechanical Engineering SCT College of Engineering Thiruvananthapuram KeralaIndia-695018

Development of an Advection Upstream Splitting method(AUSm+-up)scheme-based Unstructured Finite Volume(UFVm)solver for the simulation of two-dimensional axisymmetric/planar high speed compressible turbulent reacting shear layers is *** inviscid numerical flux is evaluated using AUSm+-up upwind *** eight-step hydrogen–oxygen finite rate chemistry model is used to model the development of chemical species in a supersonic reacting flow *** chemical species terms are alone solved implicitly in this explicit flow solver by rescaling the equation in *** turbulence modeling has been done using RNG-based k–***-stage Runge–Kutta method has been used for explicit time *** nonreacting twodimensional Cartesian version of the same solver has been successfully validated against experimental and numerical results reported for the wall static pressure data in sonic slot injection to supersonic *** validation studies for reacting flow solver has been done using experimental results reported for a coaxial supersonic combustor,in which species profile at various axial locations has been *** numerical solver is useful in simulating combustors of high speed air-breathing propulsion devices.

关键词： Supersonic combustion turbulent reacting flows advection upstream splitting method

Exploiting natural language services:a polarity based black-box attack

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Frontiers of Computer Science 2022年第5期16卷 213-215页

作者： Fatma GUmUS m.Fatih AmASYALI Department of Computer Engineering Yildiz Technical UniversityIstanbul 34220Turkey Department of Computer Engineering Air Force AcademyNational Defence UniversityIstanbul 34149Turkey

1 Introduction Production input of Natural Language Processing(NLP)services can be be manipulated with malicious intent in order to lower the performance to a level that compromises the integrity of the service without any information on the underlying *** adversaries that perform word-level input perturbations in black-box settings first detect the“important”words,then perform noisy operations,such as replacement or *** et al.[1]assigned word importance scores(temporal scores)calculated via querying the partial input for each individual *** this procedure,they queried the victim model on both the word score calculation and the perturbation stage,which potentially caused a big requestresponse *** comparison,we only calculate the word importance scores(polarity score)once using an external dataset,and without querying the victim model.

关键词： services service individual

Nonlinear dynamic analysis of moving bilayer plates resting on elastic foundations

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Applied mathematics and mechanics(English Edition) 2020年第3期41卷 439-458页

作者： m.ESmAEILZADEH m.KADKHODAYAN S.mOHAmmADI G.J.TURVEY Department of mechanical Engineering Mashhad BranchAzad UniversityMashhad ***Iran Department of mechanical Engineering Ferdowsi University of MashhadMashhad ***Iran Engineering Department Lancaster UniversityBailriggLancaster LA14YRU.K.

The aim of this study is to investigate the dynamic response of axially moving two-layer laminated plates on the Winkler and Pasternak foundations. The upper and lower layers are formed from a bidirectional functionally graded(FG) layer and a graphene platelet(GPL) reinforced porous layer, respectively. Henceforth, the combined layers will be referred to as a two-dimensional(2D) FG/GPL plate. Two types of porosity and three graphene dispersion patterns, each of which is distributed through the plate thickness,are investigated. The mechanical properties of the closed-cell layers are used to define the variation of Poisson’s ratio and the relationship between the porosity coefficients and the mass density. For the GPL reinforced layer, the effective Young’s modulus is derived with the Halpin-Tsai micro-system model, and the rule of mixtures is used to calculate the effective mass density and Poisson’s ratio. The material of the upper 2D-FG layer is graded in two directions, and its effective mechanical properties are also derived with the rule of mixtures. The dynamic governing equations are derived with a first-order shear deformation theory(FSDT) and the von Kármán nonlinear theory. A combination of the dynamic relaxation(DR) and Newmark’s direct integration methods is used to solve the governing equations in both time and space. A parametric study is carried out to explore the effects of the porosity coefficients, porosity and GPL distributions, material gradients, damping ratios, boundary conditions, and elastic foundation stiffnesses on the plate response. It is shown that both the distributions of the porosity and graphene nanofillers significantly affect the dynamic behaviors of the plates. It is also shown that the reduction in the dynamic deflection of the bilayer composite plates is maximized when the porosity and GPL distributions are symmetric.

关键词： moving laminated plate bidirectional functionally graded material(FGm) graphene nanoplatelet porosity first-order shear deformation theory(FSDT) Newmark’s integration method

Numerical Treatments of Functional Fredholm Integral Equation in 2D with Discontinuous Kernels

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Journal of Applied mathematics and Physics 2023年第11期11卷 3702-3711页

作者： Abeer m. Al-Bugami Department of mathematics and Statistics Collage of Sciences Taif University Taif Saudi Arabia

This work proposes a new definition of the functional Fredholm integral equation in 2D of the second kind with discontinuous kernels (FT-DFIE). Furthermore, the work is concerned to study this new equation numerically. The existence of a unique solution of the equation is proved. In addition, the approximate solutions are obtained by two powerful methods Toeplitz matrix method (Tmm) and Product Nystr?m methods (PNm). The given numerical examples showed the efficiency and accuracy of the introduced methods.

关键词： Functional Integral Equation Tmm PNm Hammerstion

Search for dark matter production in association with the Z′ boson at the LHC in pp collisions at √s=8 TeV using monte Carlo simulations

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Chinese Physics C 2021年第8期45卷 1-11页

作者： S.Elgammal m.A.Louka A.Y.Ellithi m.T.Hussein Centre for theoretical physics The British University in EgyptCairoEgypt Physics Department Faculty of ScienceCairo UniversityEgypt

This analysis evaluates the possibility of the search for Dark matter(Dm)particles using events with a Zf heavy gauge boson and a large missing transverse momentum at the Large Hadron Collider(LHC).We consider the muonic decay of Z'.The analyzed monte Carlo samples were the Open simulated files produced by the Compact muon Solenoid(CmS)collaboration for proton-proton collisions,corresponding to an integrated luminosity of the LHC run-I with 19.7 fb^(-1) at √s=8 *** scenarios,namely a simplified benchmark scenario,called Dark Higgs,and the effective field theory(EFT)formalism,were used for *** were set on Z′,dark matter masses,and the cutoff scale of the EFT.

关键词： dark matter new heavy gauge boson Large Hadron Collider Compact muon Solenoid

Comparison between radarsat-1 SAR different data modes for oil spill detection by a fractal box counting algorithm

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International Journal of Digital Earth 2009年第3期2卷 237-256页

作者： m.marghany A.P.Cracknell m.Hashim Natural Tropical Resources Information&mapping Research Group(NATRIm Research Group) Faculty of Geoinformation Science and EngineeringUniversiti Teknologi Malaysia81310 UTMSkudaiJohore BahruMalaysia Department of Remote Sensing Faculty of Geoinformation Science and EngineeringUniversiti Teknologi Malaysia81310 UTMSkudaiJohore BahruMalaysia

This work presents a modified formula for the fractal box counting *** method is based on the utilisation of the probability distribution formula in the fractal box *** purpose of this method is to use it for the discrimination of oil spill areas from the surrounding features,*** surface and look-alikes,using RADARSAT-1 SAR Wide beam mode(W1),Standard beam mode(S2)and Standard beam mode(S1)data acquisition under different wind *** results show that the new formula is able to discriminate between oil spills and look-alike *** results also illustrate that the new fractal formula identifies well the deficiency of oil spills in pairs of S2 ***,there are no significant differences between fractal values of look-alikes,low wind zone,and current shear features in different beam modes for acquisition of RADARSAT-1 SAR *** W1 mode data,however,show an error standard deviation of 0.002,thus performing a better discrimination of oil spills than the S1 and S2 mode data.

关键词： RADARSAT-1 SAR oil spill look-alike low wind zone fractal dimension

Bayesian Variable Selection for mixture Process Variable Design Experiment

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Open Journal of modelling and Simulation 2022年第4期10卷 391-416页

作者： Sadiah m. A. Aljeddani Department of mathematics Al-Lith College Umm Al-Qura University Al-Lith Saudi Arabia

This paper discussed Bayesian variable selection methods for models from split-plot mixture designs using samples from metropolis-Hastings within the Gibbs sampling algorithm. Bayesian variable selection is easy to implement due to the improvement in computing via mCmC sampling. We described the Bayesian methodology by introducing the Bayesian framework, and explaining markov Chain monte Carlo (mCmC) sampling. The metropolis-Hastings within Gibbs sampling was used to draw dependent samples from the full conditional distributions which were explained. In mixture experiments with process variables, the response depends not only on the proportions of the mixture components but also on the effects of the process variables. In many such mixture-process variable experiments, constraints such as time or cost prohibit the selection of treatments completely at random. In these situations, restrictions on the randomisation force the level combinations of one group of factors to be fixed and the combinations of the other group of factors are run. Then a new level of the first-factor group is set and combinations of the other factors are run. We discussed the computational algorithm for the Stochastic Search Variable Selection (SSVS) in linear mixed models. We extended the computational algorithm of SSVS to fit models from split-plot mixture design by introducing the algorithm of the Stochastic Search Variable Selection for Split-plot Design (SSVS-SPD). The motivation of this extension is that we have two different levels of the experimental units, one for the whole plots and the other for subplots in the split-plot mixture design.

关键词： Variable Selection Bayesian Analysis mixture Experiment Split-Plot Design

Alumina Effect on the Phase Transformation of 3Y-TZP Ceramics

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Journal of materials Science & Technology 2008年第6期24卷 873-877页

作者： Ezzat S.Elshazly m.El-Sayed Ali S.m.El-Hout Department of metallurgy Nuclear Research CenterAtomic Energy AuthorityCairoEgypt

The isothermal tetragonal-to-monoclinic phase transformation of 3 mol fraction Y2O3-ZrO2 ceramics contain- ing different amounts of Al2O3 during ageing in water at 130℃ for periods of time up to 40 h was investigated to explore the effect of Al2O3 addition on this transformation. The propagation of the transformation into the specimen interiors was suppressed by the addition of Al2O3. The transformation kinetics showed a nucleation and growth mechanism on the specimen surface to be dominant in the low temperature ageing in water environment.

关键词： Phase transformation 3Y-TZP Al2O3 Kinetics

Fundamental Groups of Graphs of Cyclic Subgroup Separable and Weakly Potent Groups

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Algebra Colloquium 2021年第1期28卷 119-130页

作者： m.S.m.Asri K.B.Wong P.C.Wong Institute of mathematical Sciences Faculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia

We give a characterization of the cyclic subgroup separability and weak potency of the fundamental group of a graph of polycyclic-by-finite groups and free-by-finite groups amalgamating edge subgroups of the form×D,w... 详细信息

关键词： HNN extensions fundamental groups of graphs of groups weakly potent residually finite