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Influences of different forces on the bubble entrainment into a stationary Gaussian vortex

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Science China(Physics,Mechanics & Astronomy) 2013年第11期56卷 2162-2169页

作者： ZHANG aman NI BaoYu College of Shipbuilding Engineering Harbin Engineering University

Simulations of bubble entrainment into a stationary Gaussian vortex are performed by using the combined particle tracking method(PTM)and boundary element method(BEM).Before the bubble is captured by the vortex core,oscillation and migration of the quasi-spherical nucleus are solved by using improved RP equation and the momentum theorem in the Lagrangian reference frame simultaneously,and the trajectory of the nucleus presents a kind of reduced helix *** captured by the vortex core,the bubble grows immediately and moves and deforms along the vortex core *** non-spherical evolution and deformation of the bubble is simulated by adopting a mixed Eulerian-Lagrangian *** output of quasi-spherical stage is taken as the input of non-spherical stage,and all the behaviors of the entrained bubble can be simulated such as inception,motion,deformation and *** results agree well with published experimental *** this basis,the influences of various factors such as viscosity,surface tension,buoyancy are studied *** the results from this paper would provide some insight into the control on vortex bubble entrainment.

关键词： bubble entrainment gaussian vortex trajectory split

Cross Intelligence Evaluation for Effective Emotional Intelligence Estimat

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Computers, Materials & Continua 2022年第2期70卷 2489-2505页

作者： Ibrahim Alsukayti aman Singh Department of Computer Science College of ComputerQassim UniversityBuraydah51452Saudi Arabia Computer Science and Engineering Lovely Professional University144411PunjabIndia

Afamous psychologist or researcher,Daniel Goleman,gave a theory on the importance of Emotional Intelligence for the success of an individual’s *** Goleman quoted in the research that“The contribution of an individual’s Intelligence Quotient(IQ)is only 20%for their success,the remaining 80%is due to Emotional Intelligence(EQ)”.However,in the absence of a reliable technique for EQ evaluation,this factor of overall intelligence is ignored in most of the intelligence evaluation *** research presented an analysis based on basic statistical tools along with more sophisticated deep learning *** proposed cross intelligence evaluation uses two different aspects which are similar,i.e.,EQ and SQ to estimate EQ by using a trained model over SQ *** presented analysis ensures the resemblance between the Emotional and Social Intelligence of an *** research authenticates the results over standard statistical tools and is practically inspected by deep learning *** Emotional Intelligence Questionnaire-Short Form(TEIQue-SF)and Social IQ dataset are deployed over aMulti-layered Long-Short TermMemory(M-LSTM)based deep learning model for accessing the resemblance between EQ and *** M-LSTM based trained deep learning model registered,the high positive resemblance between Emotional and Social Intelligence and concluded that the resemblance factor between these two is more than 99.84%.This much resemblance allows future researchers to calculate human emotional intelligence with the help of social *** flexibility also allows the use of Big Data available on social networks,to calculate the emotional intelligence of an individual.

关键词： Emotional intelligence social intelligence deep learning social IQ dataset multi-layered long short term memory

Detection of digestive malignancies and post-gastrectomy complications via gastrointestinal fluid examination

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Frontiers of Medicine 2017年第1期11卷 20-31页

作者： Lei Huan aman Xu Department of Gastrointestinal Surgery the First Affiliated Hospital of Anhui Medical University Hefei 230022 China German Cancer Research Center (DKFZ) Heidelberg Germany Department of General Surgery the Fourth Affiliated Hospital of Anhui Medical University Hefei 230022 China

To date, gastric carcinoma （GC） is one of the common and fatal digestive malignancies worldwide. The prognosis of GC is not always satisfactory because of late diagnosis. Scholars are keen on discovering novel accurate and economical biomarkers in body liquids for GC screening to detect and evaluate the lesion before the results of imaging techniques are obtained. While traditional serum assays have limited sensitivity and specificity, gastrointestinal juice may provide relevant specific biomarkers because of its close contact with the tumor. Herein, the current progress in the relationship between gastrointestinal fluid analyses and GC is systematically and comprehensively reviewed. The detection of gastric juice pH, fluorescence spectrum, cytology, Helicobacterpylori- associated markers, nitrosamines, conventional tumor markers, amino acids, proteomics, microRNAs, long noncoding RNAs, protein-coding genes, vitamin C, etc., and combination tests of different category markers could provide important diagnostic and prognostic clues for gastrointestinal diseases. Particularly, early GC may be efficiently screened using gastric juice. Gastrointestinal fluid examination could also predict the adverse effects of postgastrectomy, such as pancreatic leakage, fistula, and abscess. Gastric fluid markers should be further studied to reveal the early predicators of malignancy and complications. The methods for obtaining the samples of gastrointestinal juice with minimum incision should also be comprehensively investigated.

关键词： gastrointestinal fluid gastric carcinoma biomarker diagnosis prognosis gastrectomy adverse events

Fast Modification of Microdischarge Emission Bands by Fracture of Sugar

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Chinese Physics Letters 2011年第8期28卷 304-306页

作者： Sergej aman Juergen Tomas AStreletskii Otto-von-Guericke University MagdeburgP.O.Box 412039106 MagdeburgGermany Institute of Chemical Physics RASKosygina 4Moscow 119991Russia

Intensive light pulses with widths of about 10 ns were observed during the crack propagation by cleavage of crystalline sugar at atmospheric *** observed light pulses were caused by a sequence of gas microdischarges(MDs).The pulses were detected in the UV/VIS and NIR wavelength *** the light pulses appear in the UV/VIS wavelength range,and then after a delay of about 0.4–1.2 ns in the NIR wavelength *** characteristic feature of MDs can be used for the characterization of crack propagation.

关键词： delay sugar Fast

Generalized Backward Doubly Stochastic Differential Equations Driven by Lévy Processes with Continuous Coefficients

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Acta Mathematica Sinica,English Series 2012年第10期28卷 2011-2020页

作者： Auguste aman Jean Marc OWO UFR de Mathématiques et Informatique Université de Cocody

A new class of generalized backward doubly stochastic differential equations （GBDSDEs in short） driven by Teugels martingales associated with Levy process are investigated. We establish a comparison theorem which al... 详细信息

关键词： Backward doubly stochastic differential equations L@vy processes Teugels martingales comparison theorem continuous and linear growth conditions

The effect of side walls on particles mixing in rotating drums

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Particuology 2023年第1期72卷 112-121页

作者： aman Jain Fabien Evrard Berend van Wachem Chair of Mechanical Process Engineering Otto-von-Guericke-University MagdeburgUniversitaetsplatz 2Magdeburg 39106Germany

In this paper, we study the effects of the presence and shape of side walls and of the overall length of rotating cylindrical drums on the mixing of particles with differing sizes by application of the discrete element method (DEM). By varying the semi-axis of the spheroidally shaped side walls and the length of the overall drum, we observe the formation of circulation patterns near the side walls. Although there is a vast amount of literature studying mixing regimes in rotating drums, little is known about the effect of the side walls of the drum on particle mixing. The results of our study demonstrate that introducing curved side walls induces a strong circulation pattern near these side walls, but has, paradoxically, a negative impact on mixing and actually promotes segregation. The cause for this segregation is the difference in velocity of differently sized particles near the curved side walls. Large particles accumulate at the curved side walls, whereas small particles move away from the curved side walls. When the length of the drum is increased, the overall effect of the side walls is decreased, although it does remain observable, even in very large drums.

关键词： Discrete element method Rotating drums Particle mixing Side walls of rotating drums

A Robust Video Watermarking Scheme with Squirrel Search Algorithm

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Computers, Materials & Continua 2022年第5期71卷 3069-3089页

作者： aman Bhaskar Chirag Sharma Khalid Mohiuddin aman Singh Osman A.Nasr Mamdooh Alwetaishi Computer Science and Engineering Lovely Professional UniversityPunjab144411India Department of Management Information Systems King Khalid UniversityGuraigerAbha62529Saudi Arabia Department of Civil Engineering College of EngineeringTaif UniversityTaif21944Saudi Arabia

Advancement in multimedia technology has resulted in protection against distortion,modification,and *** implementing such protection,we have an existing technique called watermarking but obtaining desired distortion level with sufficient robustness is a challenging task for watermarking in multimedia *** the paper,we proposed a smart technique for video watermarking associating meta-heuristic algorithms along with an embedding method to gain an optimized *** main aim of the optimization algorithm is to obtain solutions with maximum robustness,and which should not exceed the set threshold of *** represent the accuracy of the proposed scheme,we employ a popular video watermarking technique(DCT domain)having frame selection and embedding method for watermarking.A squirrel search algorithm is chosen as a meta-heuristic algorithm that utilizes the stated fitness *** results indicate that quality constraint is fulfilled,and the proposed technique gives improved robustness against different attacks with several quality *** proposed technique could be practically implemented in several multimedia applications such as the films industry,medical imagery,OOT platforms,etc.

关键词： Meta-heuristic algorithm constrain optimization problem fitness fiction frame selection squirrel search algorithm

iSeeBetter: Spatio-temporal video super-resolution using recurrent generative back-projection networks

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Computational Visual Media 2020年第3期6卷 307-317页

作者： aman Chadha John Britto M.Mani Roja Department of Computer Science Stanford University450 Serra MallStanfordCA 94305USA Department of Computer Science University of Massachusetts AmherstAmherstMA 01003USA Department of Electronics and Telecommunication Engineering University of MumbaiMumbaiMaharashtra 400032India

Recently,learning-based models have enhanced the performance of single-image superresolution(SISR).However,applying SISR successively to each video frame leads to a lack of temporal *** neural networks(CNNs)outperform traditional approaches in terms of image quality metrics such as peak signal to noise ratio(PSNR)and structural similarity(SSIM).On the other hand,generative adversarial networks(GANs)offer a competitive advantage by being able to mitigate the issue of a lack of finer texture details,usually seen with CNNs when super-resolving at large upscaling *** present i See Better,a novel GAN-based spatio-temporal approach to video super-resolution(VSR)that renders temporally consistent super-resolution videos.i See Better extracts spatial and temporal information from the current and neighboring frames using the concept of recurrent back-projection networks as its ***,to improve the"naturality"of the superresolved output while eliminating artifacts seen with traditional algorithms,we utilize the discriminator from super-resolution generative adversarial *** mean squared error(MSE)as a primary loss-minimization objective improves PSNR/SSIM,these metrics may not capture fine details in the image resulting in misrepresentation of perceptual *** address this,we use a four-fold(MSE),perceptual,adversarial,and total-variation loss *** results demonstrate that i See Better offers superior VSR fidelity and surpasses state-of-the-art performance.

关键词： networks resolution projection

Low temperature annealing of metals with electrical wind force effects

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Journal of Materials Science & Technology 2019年第4期35卷 465-472页

作者： Daudi Waryoba Zahabul Islam Baoming Wang aman Haque Engineering Applied MaterialsPenn State UniversityCollege Place Mechanical & Nuclear Engineering Penn State UniversityUniversity Park

Conventional annealing is a slow, high temperature process that involves heating atoms uniformly, i.e., in both defective and crystalline regions. This study explores an electrical alternative for energy efficiency,where moderate current density is used to generate electron wind force that produces the same outcome as the thermal annealing process. We demonstrate this on a zirconium alloy using in-situ electron back scattered diffraction(EBSD) inside a scanning electron microscope(SEM) and juxtaposing the results with that from thermal annealing. Contrary to common belief that resistive heating is the dominant factor, we show that 5 × 10~4 A/cm^2 current density can anneal the material in less than 15 min at only135?C. The resulting microstructure is essentially the same as that obtained with 600?C processing for360 min. We propose that unlike temperature, the electron wind force specifically targets the defective regions, which leads to unprecedented time and energy efficiency. This hypothesis was investigated with molecular dynamics simulation that implements mechanical equivalent of electron wind force to provide the atomistic insights on defect annihilation and grain growth.

关键词： Annealing Grain-growt Electron backscattered diffraction(EBSD) Molecular dynamics simulations Electron wind force