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Text-Image Feature Fine-Grained Learning for Joint Multimodal Aspect-Based Sentiment Analysis

Computers, Materials & Continua 2025年第1期82卷 279-305页

作者： Tianzhi Zhang Gang Zhou Shuang Zhang Shunhang Li Yepeng Sun Qiankun Pi Shuo Liu School of Data and Target engineering Information Engineering UniversityZhengzhou450001China information engineering department Liaoning Provincial College of CommunicationsShenyang110122China School of Computer and Artificial Intelligence Zhengzhou UniversityZhengzhou450000China

Joint Multimodal Aspect-based Sentiment Analysis(JMASA)is a significant task in the research of multimodal fine-grained sentiment analysis,which combines two subtasks:Multimodal Aspect Term Extraction(MATE)and Multimodal Aspect-oriented Sentiment Classification(MASC).Currently,most existing models for JMASA only perform text and image feature encoding from a basic level,but often neglect the in-depth analysis of unimodal intrinsic features,which may lead to the low accuracy of aspect term extraction and the poor ability of sentiment prediction due to the insufficient learning of intra-modal *** this problem,we propose a Text-Image Feature Fine-grained Learning(TIFFL)model for ***,we construct an enhanced adjacency matrix of word dependencies and adopt graph convolutional network to learn the syntactic structure features for text,which addresses the context interference problem of identifying different aspect ***,the adjective-noun pairs extracted from image are introduced to enable the semantic representation of visual features more intuitive,which addresses the ambiguous semantic extraction problem during image feature ***,the model performance of aspect term extraction and sentiment polarity prediction can be further optimized and *** on two Twitter benchmark datasets demonstrate that TIFFL achieves competitive results for JMASA,MATE and MASC,thus validating the effectiveness of our proposed methods.

关键词： Multimodal sentiment analysis aspect-based sentiment analysis feature fine-grained learning graph convolutional network adjective-noun pairs

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Enhancement of Anti-Stokes Line of Stimulated Four-Photon Mixing in an Er^(3+ ) Doped Silica Fiber

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Chinese Physics Letters 1993年第8期10卷 479-481页

作者： SHEN Shupo YU Zhongqiu department of Physics Zhengzhou UniversityZhengzhou 450052 seventh department^zhengzhou information engineering college Zhengzhou 450000

By using a pidsed dye Laser of nanosecond level as a pump source,we have investi-ga-ted stiinulated Ranmn *** and stiiuulatcd four-photon mixing in Er^(3+) doped silicu *** experimental results show that all lines,incJuding the pump radia-tion line,are obviously broadened and the anti-Stokes lines of stimulated four-photon mixing are greatly enhanced,and that the enhancement effect is independent of the wavelength.

关键词： pump Stokes mixing

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engineering the spectra of photon triplets generated from micro/nanofiber

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Chinese Physics B 2024年第3期33卷 408-414页

作者：瞿川郭东琴李笑笑刘振旗赵义张胜海卫正统 The college of Basic department Information Engineering UniversityZhengzhou 450000China

Quantum light sources are the core resources for photonics-based quantum information *** investigate the spectral engineering of photon triplets generated by third-order spontaneous parametric down-conversion in micro/*** phase mismatching at one-third pump frequency gives rise to non-degenerate photon triplets,the joint spectral intensity of which has an elliptical locus with a fixed eccentricity of√6/***,we propose a frequency-division scheme to separate non-degenerate photon triplets into three channels with high heralding efficiency for the first *** an appropriate pump wavelength can compensate for the fabrication errors of micro/nanofiber and also generate narrowband,non-degenerate photon triplet sources with a high signal-to-noise ***,the long-period micro/nanofiber grating introduces a new controllable degree of freedom to tailor phase matching,resulting from the periodic oscillation of *** this scheme,the wavelength of photon triplets can be flexibly tuned using quasi-phase *** study the generation of photon triplets from this novel perspective of spectrum engineering,and we believe that this work will accelerate the practical implementation of photon triplets in quantum information processing.

关键词： photon triplets micro/nanofiber spectrum engineering

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Generation of spectrally uncorrelated biphotons via fiber nonlinear quantum interference

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Chinese Physics B 2023年第6期32卷 242-249页

作者：卫正统瞿川吴天安李媛媛李博张胜海 college of Basic department Information Engineering UniversityZhengzhou 450000China

Spectrally uncorrelated biphotons are the essential resources for achieving various quantum information processing *** theoretically investigate the generation of spectrally uncorrelated biphotons emitted by spontaneous fourwave mixing from a fiber nonlinear interferometer which consists of an N-stage nonlinear gain fiber and an(N-1)-stage dispersion modulation *** output biphoton states of nonlinear interference are the coherent superposition of various biphoton states born in each nonlinear fiber,and thus the interference fringe will reshape the biphoton joint *** a result,resorting to Taylor expansion to first order for phase mismatching,we theoretically verify that the orientation of phase matching contours will rotate in a specific way with only varying the length of dispersion modulation *** rotation in orientation of phase matching contours may result in spectrally uncorrelated biphotons and even arbitrary correlation ***,we choose micro/nanofiber as the nonlinear gain fiber and single-mode communication fiber as dispersion modulation fiber to numerically simulate the generation of spectrally uncorrelated biphotons from spontaneous fourwave ***,due to significant frequency detuning(hundreds of THz),Raman background noise can be considerably suppressed,even at room temperature,and photons with largely tunable wavelengths can be achieved,indicating a practicability in many quantum fields.A photon mode purity of 97.2%will be theoretically attained without weakening the heralding nature of biphoton *** think that this fiber nonlinear interference with the flexibly engineered quantum state can be an excellent practical source for quantum information processing.

关键词： photon mode purity nonlinear quantum interference group velocity matching

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A passive current sensor employing self-biased magnetoelectric transducer and high-permeability nanocrystalline flux concentrator

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Rare Metals 2022年第7期41卷 2343-2348页

作者： Ji-Tao Zhang Yu-Mei Wen Ping Li Research Center of Sensors and Instruments College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China department of Smart Grids and information engineering College of Electric and Information EngineeringZhengzhou University of Light IndustryZhengzhou 450002China

A passive current sensor,consisting of SmFe_(2)/PZT/SmFe_(2)self-biased magnetoelectric(ME)composite and Fe_(73.5)Cu_(1)Nb_(3)Si_(13.5)B_(9)nanocrystalline flux concentrator for weak current detection at power-line frequency,was fabricated and *** magnetostrictive material of SmFe_(2)plate with large anisotropic constant provides a huge internal anisotropic field to bias the ME transducer in closed magnetic ***,the additional magnetomotive force induced by the internal field and the corresponding increased effective permeabil-ity contribute to the improvement of the *** results demonstrate that the presented sensor has a higher sensitivity of 152 mV·A^(-1)at 50 Hz with a slight nonlinearity of~0.01%full scale(FS)and matches well with the predicted *** presented current-sensing device exhibits approximately 2.3 times higher sensitivity than that of conventional ME composite with[Pb(Zr_(0.48),Ti_(0.52)O_(3)](PZT)and Terfenol-D plates serving as a key sensitive *** addition,time stabilities of the presented sensor were evaluated for a long period of 72 h and analyzed through mathematical statistics method,and favorable stabilities with an uncertainty of 0.5μV are obtained in continuous 1 h *** results provide a significant advancement toward promising application of the tri-layer self-biased ME laminate for power-line elec-tric cords monitoring.

关键词： Magnetoelectric effects Current sensor Magnetic flux concentrator Magnetostrictive rare earth iron alloys

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Size effect in the melting and freezing behaviors of Al/Ti core-shell nanoparticles using molecular dynamics simulations

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Chinese Physics B 2016年第3期25卷 277-282页

作者：张金平张洋洋王二萍唐翠明程新路张秋慧 college of information engineering Huanghe Science and Technology College Zhengzhou 450006 China Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China department of Electrical information engineering Henan Institute of Engineering Zhengzhou 451191 China

The thermal stability of Ti@A1 core/shell nanoparticles with different sizes and components during continuous heating and cooling processes is examined by a molecular dynamics simulation with embedded atom method. The thermodynamic properties and structure evolution during continuous heating and cooling processes are investigated through the character- ization of the potential energy, specific heat distribution, and radial distribution function （RDF）. Our study shows that, for fixed Ti core size, the melting temperature decreases with A1 shell thickness, while the crystallizing temperature and glass formation temperature increase with A1 shell thickness. Diverse melting mechanisms have been discovered for different Ti core sized with fixed A1 shell thickness nanoparticles. The melting temperature increases with the Ti core radius. The trend agrees well with the theoretical phase diagram of bimetallic nanoparticles. In addition, the glass phase formation of A1-Ti nanoparticles for the fast cooling rate of 12 K/ps, and the crystal phase formation for the low cooling rate of 0.15 K/ps. The icosahedron structure is formed in the frozen 4366 A1-Ti atoms for the low cooling rate.

关键词： molecular dynamics melting radial distribution function structure evolution

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Probing the TC2 model via Production of Top Quark Pairs at Tevatron and LHC

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Chinese Physics Letters 2007年第6期24卷 1513-1516页

作者：谷勤忠杨华王学雷 college of Physics and information engineering Henan Normal University Xinxiang 453007 department of Physics and information engineering Shangqiu Teachers College Shangqiu 476000 department of Mathematics and Physics Information Engineering University Zhengzhou 450004

The topcolour-assisted technicolour （TC2） model is an interesting dynamical theory among the various new physics models. We cMculate the total tt cross section and the relative correction of the TC2 model to the cross section at Tevatron Run Ⅱ and LHC. At the Tevatron Run Ⅱ, the cross section predicted by the standard model （SM） is consistent with the experimental data, and in most parameter spaces of the TC2 model, the relative correction of the TC2 model to the cross section is too small to be detectable. We find that the tt cross section is more sensitive to the parameters of the TC2 model at the LHC and the relative correction of the TC2 model to the cross section is over 10% in general. Such a value of the relative correction should be large enough to be detectable at the LHC. Therefore, it is promising to find the clue of the TC2 model via the tt production at the LHC.

关键词： TOPCOLOR-ASSISTED TECHNICOLOR MULTISCALE TECHNICOLOR FERMILAB TEVATRON HADRON COLLIDERS PHYSICS

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First-Principles Calculations of Atomic and Electronic Properties of Tl and In on Si(111)

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Communications in Theoretical Physics 2010年第9期54卷 545-550页

作者：戴宪起赵建华孙永灿危书义卫国红 college of Physics & information engineering Henan Normal University department of Physics Zhengzhou Normal University

The atomic and electronic structures of T1 and In on Si（111） surfaces are investigated using the firstprinciples total energy calculations. Total energy optimizations show that the energetically favored structure is 1/3 ML T1 adsorbed at the T4 sites on Si（111） surfaces. The adsorption energy difference of one T1 adatom between （√3 × √3） and （1 × 1） is less than that of each In adatom. The DOS indicates that TI 6p and Si 3p electrons play a very important role in the formation of the surface states. It is concluded that the bonding of TI adatoms on Si（111） surfaces is mainly polar covalent, which is weaker than that of In on Si（111）. So T1 atom is more easy to be migrated than In atom in the same external electric field and the structures of T1 on Si（111） is prone to switch between （√3 × √3） and （1 × 1）.

关键词： thallium indium silicon charge density adsorption first principles

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Improving the BER performance of turbo codes with short frame size based on union bound

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High Technology Letters 2015年第3期21卷 309-314页

作者：邵霞 Li Ping Zhang Weidang department of information engineering North China University of Water Resources and Electric Power department of information Management Shengda Trade Economics & Management College of Zhengzhou School of information engineering Zhengzhou University

timizing the formula, the energy for every bit of the codeword is optimized to achieve the minimum BER at high SNR region. At last, an adjustable parameter is employed to compensate the degrada- tions of BER at low and moderate SNR regions. Case studies indicate that the improvements of BER for turbo codes with short frame size are significant at a wide range of SNR

关键词： channel coding bit error rate (BER) energy allocation turbo code

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On Group Phase Quantization and Its Physical Characteristics

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Chinese Physics Letters 2011年第5期28卷 64-67页

作者： DU Bao-Qiang ZHOU Wei YU Jian-Guo DONG Shao-Feng department of Measurement and Instrument Xidian UniversityXi’an 710071 department of information engineering Henan Vocational and Technical CollegeZhengzhou 450046

The physical characteristics of phase quantum are further revealed,based on the proposition of concepts of the greatest common factor frequency,the least common multiple period,quantized phase shift resolution and equivalent phase comparison *** the problem of phase comparison between different frequency signals is certified in *** the basic principle of phase comparison between different frequencies and the variation law of group phase difference,a point of view on group phase quantization is *** phase quantum is not only an indivisible individual of group phase,but also a basic unit composing group phase *** is equal to the equivalent phase comparison period of phase comparison between different frequencies in *** results show not only a high measurement resolution of 10^(-12)/s in frequency measurement based on group phase quantum,but also a super-high locked phase precision of 10^(-13)/s in active H atomic clock.

关键词： phase quantum comparison

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