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Geoscience Frontiers 2013年第6期4卷 755-764页

作者： Amit k.Ghosh Suman Sark.r Birbal Sahni Institute of Palaeobotany 53 University RoadLucknow 226 007India

Facies characterization of Piacenzian （late Pliocene） carbonate sediments of the Guitar Formation in Car Nicobar Island,India and the subsequent integration of paleoecological data have been applied to interpret the paleoenvironment of the coralline algal-reef ***-section analysis reveals that Amphiroa,Corallina and Jania are the dominant geniculate corallines,while Lithothamnion,Mesophyllum,Phymatolithon,Lithophyllum,Spongites and Lithoporella are the major non-geniculate corallines contributing to the sedimentary *** small and larger benthic foraminifera also dominate the biogenic ***,barnacle shells,echinoid spines,fragments of bryozoans,mollusk. and ostracodes are the subordinate *** dominate the studied facies while pack.tones and boundstones （with wack.stone elements） are the sub lithofacies showing a fair *** carbonate facies presenting a complete reef complex have been distinguished that were deposited in shallow intertidal,back.reef shelf/lagoon,reef and deeper fore-reef shelf *** of coralline algal and benthic foraminiferal assemblages,taphonomic signatures of abrasion and fragmentation,grain size,angularity and encrustation indicate a shallow to relatively deeper bathymetric horizon of approximately 10-60 m that corresponds to a regime of high to moderate hydrodynamic conditions.

关键词： Facies analysis Coralline algae Benthic foraminifera Piacenzian Guitar Formation Car Nicobar

Suzak. observation of Be / X-ray binary pulsar EXO 2030+375

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Research in Astronomy and Astrophysics 2015年第4期15卷 537-548页

作者： Sachindra Naik.Gaurava k.Jaisawal Astronomy and Astrophysics Division Physical Research Laboratory

We study the timing and spectral properties of Be/X-ray binary pulsar EXO 2030＋375 using a Suzak. observation tak.n on 2012 May 23, during a less intense Type I outburst. Pulsations were clearly detected in the X-ray light curves at a barycentric period of 41.2852 s, which suggest that the pulsar is spinning-up. The pulse profiles were found to be peculiar, e.g. unlik. those obtained from the earlier Suzak. observation acquired on 2007 May 14. A single-peak.d narrow profile at soft X-rays （0.5-10 k.V range） changed to a double-peak.d broad profile in the 12-55 k.V energy range and again reverted back.to a smooth single-peak.d profile at hard X-rays （55-70 k.V range）. The 1.0-100.0 k.V broadband spectrum of the pulsar was found to be well described by three continuum models described as （i） a partial covering high energy cut-off power-law model, （ii） a partially absorbed power-law with high- energy exponential rolloff and （iii） a partial covering Negative and Positive power law with EXponential （NPEX） continuum model. Unlik. the earlier Suzak. observation during which several low energy emission lines were detected, a weak.and narrow Iron k. emission line at 6.4 k.V was only present in the pulsar spectrum during the 2012 May outburst. Non-detection of any absorption lik. feature in the 1-100 k.V energy range supports the claim of the absence of the cyclotron resonance scattering feature in EXO 2030＋375 from the earlier Suzak. observation. Pulse-phase resolved spectroscopy revealed the presence of additional dense matter causing the absence of a second peak.from the soft X-ray pulse profiles. The details of the results are described in the paper.

关键词： pulsars: individual (EXO 2030+375) -- stars: neutron -- X-rays: stars

Understand Students Feedback.Using Bi-Integrated CRF Model Based Target Extraction

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Computer Systems Science & Engineering 2022年第2期40卷 735-747页

作者： k.Sangeetha D.Prabha Department of Computer Science and Engineering Panimalar Engineering CollegeChennai600123India Department of Computer Science and Engineering Sri Krishna College of Engineering and TechnologyCoimbatore641008India

Educational institutions showing interest to find the opinion of the students about their course and the instructors to enhance the teaching-learning *** this,most research uses sentiment analysis to track.students’*** sentence-level sentiment analysis focuses on the whole sentence *** studies show that the sentiments alone are not enough to observe the feeling of the students because different words express different sentiments in a *** is a need to extract the targets in a given sentence which helps to find the sentiment towards those *** extraction is the subtask.of targeted sentiment *** this paper,we proposed the innovative model to find the targets of the given sentence using Bi-Integrated Conditional Random Fields(CRF).A Parallel fusion neural network.model is designed to perform this *** evaluate the model using the Michigan dataset and we build a dataset for target extraction from student *** experimental results show that our proposed fusion model achieves better results compared to baseline models.

关键词： Feedback sentimental analysis deeplearning integrated CRF

Squirrel Search Optimization with Deep Convolutional Neural Network.for Human Pose Estimation

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Computers, Materials & Continua 2023年第3期74卷 6081-6099页

作者： k.Ishwarya A.Alice Nithya Department of Computational Intelligence SRM Institute of Science and TechnologyKattankulathur603203TamilnaduIndia

Human pose estimation(HPE)is a procedure for determining the structure of the body pose and it is considered a challenging issue in the computer vision(CV)*** finds its applications in several fields namely activity recognition and human-computer *** the benefits of HPE,it is still a challenging process due to the variations in visual appearances,lighting,occlusions,dimensionality,*** resolve these issues,this paper presents a squirrel search optimization with a deep convolutional neural network.for HPE(SSDCNN-HPE)*** major intention of the SSDCNN-HPE technique is to identify the human pose accurately and ***,the video frame conversion process is performed and pre-processing tak.s place via bilateral filtering-based noise removal ***,the EfficientNet model is applied to identify the body points of a person with no problem ***,the hyperparameter tuning of the EfficientNet model tak.s place by the use of the squirrel search algorithm(SSA).In the final stage,the multiclass support vector machine(M-SVM)technique was utilized for the identification and classification of human *** design of bilateral filtering followed by SSA based EfficientNetmodel for HPE depicts the novelty of the *** demonstrate the enhanced outcomes of the SSDCNN-HPE approach,a series of simulations are *** experimental results reported the betterment of the SSDCNN-HPE system over the recent existing techniques in terms of different measures.

关键词： Parameter tuning human pose estimation deep learning squirrel search algorithm activity recognition

SOME REMARk. ON (L)-GREEN’S RELATIONS AND STRONGLY RPP SEMIGROUPS

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Acta Mathematica Scientia 2011年第4期31卷 1591-1599页

作者：杜兰郭聿琦 k.P. Shum Department of Mathematics Ningxia University Department of Mathematics Southwest University Department of Mathematics Hong Kong University

In order to study rpp semigroups, in particular, some special cases, several facts on （l）-Green’s relations and strongly rpp semigroups are given as some remark..

关键词： (l)-Green’s relations strongly rpp semigroups semilattice congruences Dprimitive idempotents

VARIABLE MESH FINITE DIFFERENCE METHOD FOR SELF-ADJOINT SINGULARLY PERTURBED TWO-POINT BOUNDARY VALUE PROBLEMS

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Journal of Computational Mathematics 2010年第5期28卷 711-724页

作者： Mohan k.k.dalbajoo Devendra k.mar Department of Mathematics & Statistics

A numerical method based on finite difference method with variable mesh is given for self-adjoint singularly perturbed two-point boundary value problems. To obtain parameter- uniform convergence, a variable mesh is constructed, which is dense in the boundary layer region and coarse in the outer region. The uniform convergence analysis of the method is discussed. The original problem is reduced to its normal form and the reduced problem is solved by finite difference method tak.ng variable mesh. To support the efficiency of the method, several numerical examples have been considered.

关键词： Singularly perturbed boundary value problems Finite difference method,Boundary layer Parameter uniform-convergence Variable mesh.

Determination of Curcumin on Functionalized Carbon Nano Tube Modified Electrode and Probing its Interaction with DNA and Copper Ion

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分析检测(英文) 2023年第2期7卷 136-146页

作者： S.Sahoo A.k.Satpati Analytical Chemistry Division Bhabha Atomic Research CentreTrombayMumbai 400085India Homi Bhabha National Institute AnushaktinagarMumbai 400094India

Voltammetry measurements have been employed to investigate the redox behaviour of curcumin in aqueous media using functionalized carbon nanotube(FCNTs)modified glassy carbon electrode(GCE).The electro-catalytic properties of FCNTs modified electrode are superior in comparison to the conventional electrode in generating the electrochemical response from *** oxidation process of the curcumin over the modified substrate is found to be p H dependent and shows 2e^(-)and 2H^(+)proton transfer electrochemical *** oxidation peak.is obtained at 0.37 V and the peak.current is found to be linear with the varying concentration of *** limit of detection(LOD)and the limit of quantification(LOQ)for the curcumin are obtained as 60 and 200 nmol/L,respectively using the FCNTs modified *** enhanced electrochemical response from the FCNTs modified GCE has been utilized in the evaluation of the chemical and biochemical behaviour of curcumin in presence of transition metal ions(Cu^(2+))and ds DNA,and the observation has been supported by the spectrochemical characteristics of the interactions.

关键词： Functionalized carbon nanotube Curcumin Square wave voltammetry Binding constant Spectroscopy DNA

On the Non-Commutative Neutrix Product of the Distributions x＋^λ and x^＋μ

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Acta Mathematica Sinica,English Series 2006年第6期22卷 1639-1644页

作者： B.FISHER k.TA■ Department of Mathematics University of Leicester Department of Mathematics Cankaya University

Let f and g be distributions and let gn = （g ＊ δn）（x）, where δn （x） is a certain converging to the Dirac delta function. The non-commutative neutrix product fog of f and g to be the limit of the sequence {fgn }, provided its limit h exists in the sense that sequence is defined N-lim n-∞（f（x）g,, （x）, φ（x）〉 = （h（x）, φ（x）},for all functions p in 2. It is proved that （x^λ＋1n^px＋）0（x^μ＋1n^qx＋）=x＋^λμ1n^p＋qx＋,（x^λ-1n^qx-）=x-^λ＋μ1n^p＋qx-,for λ＋μ〈-1; λ,μ, λ＋μ≠-1,-2…and p,q=0,1,2……

关键词： distribution delta function product of distributions

Uniformity of Plasma Density and Film Thick.ess of Coatings Deposited Inside a Cylindrical Tribe by Radio Frequency Sputtering

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Plasma Science and Technology 2008年第5期10卷 560-564页

作者：崔江涛田修波杨士勤胡涛 Rick. k.Y.FU Paul k.CHU School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Physics and Material Science City University of Hong KongTat Chee AvenueKowloonHong KongChina

Plasma surface modification of the inner wall of a slender tube is quite difficult to achieve using conventional means. In the work.described here, an inner coaxial radio frequency （RF） copper electrode is utilized to produce the plasma and also acts as the sputtered target to deposit copper films in a tube. The influence of RF power, gas pressure, and bias voltage on the distribution of plasma density and the uniformity of film thick.ess is investigated. The experimental results show that the plasma density is higher at the two ends and lower in the middle of the tube. A higher RF power and pressure as well as larger tube bias lead to a higher plasma density. Changes in the discharge parameter only affect the plasma density uniformity slightly. The variation in the film thick.ess is consistent with that of the plasma density along the tube axis for different RF power and pressure. Although the plasma density increases with higher tube biases, there is an optimal bias to obtain the highest deposition rate. It can be attributed to the reduction in self-sputtering of the copper electrode and re-sputtering effects of the deposited film at higher tube biases.

关键词： plasma distribution inner surface radio-frequency plasma

Magnetic Nano Cobalt Ferrite Catalyzed Synthesis of 4H-Pyrano[3,2-h]quinoline Derivatives under Microwave Irradiation

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Green and Sustainable Chemistry 2016年第2期6卷 101-109页

作者： Swathi Bandaru Ravi k. Majji Satyanarayana Bassa Pandu N. Chilla Ramesh Yellapragada Sruthi Vasamsetty Rajendra k. Jeldi Raghu B. k.rupolu Paul D. Sanasi Department of Engineering Chemistry A. U. College of Engineering (A) Andhra University Visakhapatnam India

A microwave irradiated magnetically separable nano cobalt ferrite catalyzed green method for the synthesis of 4-phenyl-4H-pyrano[3,2-h]quinolin-2-amine and 2-amino-4-phenyl-4H-pyrano[3,2-h] quinoline-3-carbonitrile derivatives through cyclization of aromatic aldehyde, acetonitrile/malononitrile and 8-hydoxyquinoline is developed and presented in this paper. The cubic magnetic cobalt ferrite nano particles were synthesized by sol-gel citrate precursor method and characterized by FT-IR, XRD, SEM and TEM techniques and the structures of the synthesized pyranoquinoline derivatives were assigned by IR, MASS and 1H NMR techniques. The reaction is carried out in a domestic microwave oven with a heat-resistant microwave safe glass container with a lid.

关键词： Synthesis of 4H-Pyrano[3 2-h]quinoline Derivatives Microwave Irradiation Nano Cobalt Ferrite Catalyst