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CNN-Based Broad Learning for Cross-Domain Emotion Classification

Tsinghua Science and Technology 2023年第2期28卷 360-369页

作者： Rong Zeng Hongzhan Liu Sancheng Peng Lihong Cao Aimin Yang Chengqing Zong Guodong Zhou Guangdong Provincial Key laboratory of Nanophotonic Functional materials and devices South China Normal UniversityGuangzhou 511400China laboratory of Language Engineering and Computing Guangdong University of Foreign StudiesGuangzhou 510006China School of Computer Science and Intelligence Education Lingnan Normal UniversityGuangzhou 510006China National laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Computer Science and Technology Soochow UniversitySuzhou 215031China

Cross-domain emotion classification aims to leverage useful information in a source domain to help predict emotion polarity in a target domain in a unsupervised or semi-supervised *** to the domain discrepancy,an emotion classifier trained on source domain may not work well on target *** researchers have focused on traditional cross-domain sentiment classification,which is coarse-grained emotion ***,the problem of emotion classification for cross-domain is rarely *** this paper,we propose a method,called convolutional neural network(CNN)based broad learning,for cross-domain emotion classification by combining the strength of CNN and broad *** first utilized CNN to extract domain-invariant and domain-specific features simultaneously,so as to train two more efficient classifiers by employing broad ***,to take advantage of these two classifiers,we designed a co-training model to boost together for ***,we conducted comparative experiments on four datasets for verifying the effectiveness of our proposed *** experimental results show that the proposed method can improve the performance of emotion classification more effectively than those baseline methods.

关键词： cross-domain emotion classification CNN broad learning classifier co-training

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Novel P2-type layered medium-entropy ceramics oxide as cathode material for sodium-ion batteries

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Journal of Advanced Ceramics 2022年第1期11卷 158-171页

作者： Shengxue YAN Shaohua LUO Liu YANG Jian FENG Pengwei LI Qing WANG Yahui ZHANG Xin LIU School of materials Science and Engineering Northeastern UniversityShenyang 110819China Key laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China School of Resources and materials Northeastern University at QinhuangdaoQinhuangdao 066004China State Key laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

High-entropy oxides(HEOs)and medium-entropy oxides(MEOs)are new types of single-phase solid solution *** have rarely been reported as positive electrode material for sodium-ion batteries(SIBs).In this study,we first proposed the concept of the application of MEOs in SIBs.P2-type 3-cation oxide Na_(2/3)Ni_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)and 4-cation oxide Na_(2/3)Ni_(1/3)Mn_(1/3)Fe_(1/3-x)Al_(x)O_(2)(NaNMFA)were prepared using the solid-state method,rather than the doping *** addition,the importance of the concept of entropy stabilization in material performance and battery cycling was demonstrated by testing 3-cation(NaNMF)and 4-cation(NaNMFA)oxides in the same ***,NaNMFA can provide a reversible capacity of about 125.6 mAh-g”1 in the voltage range of 2-4.2 V,and has enhanced cycle *** capacity and decay law of the MEO batteries indicate that the configurational entropy(1.28 R(NaNMFA)>1.10 R(NaNMF))of the cationic system,is the main factor affecting the structural and cycle stability of the electrode *** work emphasizes that the rational design of MEOs with novel structures and different electrochemically active elements may be the strategy for exploring high-performance SIB cathode materials in next-generation energy storage devices.

关键词： cathode materials medium-entropy oxide(MEO) configuration entropy electrochemical performance sodium-ion batteries(SIBs)

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Preface to the Special Issue on the Dynamic Behaviors and Energy Absorption of materials and Structures

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Acta Mechanica Solida Sinica 2021年第6期34卷 781-782页

作者： Jin Qian Ronghao Bao Weiqiu Chen Department of Engineering Mechanics Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhou 310027China

In this themed issue of Acta Mechanica Solida Sinica(AMSS),leading experts and researchers are joining together to celebrate Professor Tongxi Yu’s 80th birthday and pay tribute to his distinguished career spanning over five decades,devoted to pioneering research in the fields of impact dynamics,plasticity,energy absorption,textile and cellular materials,nano-composites,*** Yu has been a much-admired teacher,a mentor and a friend to all who worked with him throughout his career,and this collection of articles is contributed by people who have had association with Professor Yu as colleagues,students,postdocs or collaborators.

关键词： devoted career Absorption

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Interlayer coupling in anisotropic/isotropic van der Waals heterostructures of ReS2 and MoS2 monolayers

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Nano Research 2016年第12期9卷 3772-3780页

作者： Mei Zhao Wenting Zhang Manman Liu Chao Zou Keqin Yang Yun Yang Youqing Dong Lijie Zhang Shaoming Huang College of Chemistry and materials Engineering Wenzhou University Zhejiang Key Laboratory of Carbon Materials Wenzhou 325035 China Key laboratory of Strongly-Coupled Quantum Matter Physics Chinese Academy of Sciences School of Physical Sciences University of Science and Technology of China Hefei 230026 China

In-plane symmetry is an important contributor to the physical properties of two-dimensional layered materials, as well as atomically thin heterojunctions. Here, we demonstrate anisotropic/isotropic van der Waals （vdW） heterostructures of ReS2 and MoS2 monolayers, where interlayer coupling interactions and charge separation were observed by in situ Raman-photoluminescence spectroscopy, electrical, and photoelectrical measurements. We believe that these results could be helpful for understanding the fundamental physics of atomically thin vdW heterostructures and creating novel electronic and optoelectronic devices.

关键词： ReS2/MoS2 monolayers van der Waalsheterostructures interlayer couplinginteractions optoelectronics

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Reversible control of magnetic and transport properties of NdNiO_(3-δ)epitaxial films

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Journal of Rare Earths 2021年第3期39卷 317-322,I0003页

作者： Huihui Ji Guowei Zhou Jun Zhang Xiaojiao Wang Xiaohong Xu Key laboratory of Magnetic Molecules and Magnetic Information materials Ministry of EducationSchool of Chemistry and Materials ScienceShanxi Normal UniversityLinfen 041004China Research Institute of materials Science of Shanxi Normal University&Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic materials and Technology Linfen 041004China

Rare-earth nickelates possess intrinsic charge order,orbital order,and electron-lattice coupling,which make them very interesting for applications in oxide-based electronic *** this study,we grew NdNiO_(3-δ)(NNO) films with oxygen pressures changing from 27 to 10^(-5) *** decreasing oxygen pressure,the antiferromagnetic state of the NNO film becomes a ferromagnetic state,and the resistance increases *** to combined X-ray absorption spectro scopy and X-ray linear dichroism measurements,the ratio of Ni^(2+)-ions increases with decreasing oxygen-pressure,and the preferred orbital occupation changes from x^(2)-y^(2) to 3 z^(2)-r^(2).In addition,using the ionic-liquid gating method to control the migration of oxygen vacancies,both the magnetic properties and resistance of NNO films can be modulated *** oxygen vacancy induces a valence in the Ni ions and the orbital occupation changes,which alters the magnetic properties and the electronic transport in these NNO *** study describes a novel tunable method for electronic devices that use NdNiO_(3-δ) films,and opens new doors for future improvements and functionalities.

关键词： NdNiO3 films Oxygen vacancy Valence state Orbital occupation Ionic liquid gating Rare earths

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Biocompatible hierarchical zwitterionic polymer brushes with bacterial phosphatase activated antibacterial activity

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Journal of materials Science & Technology 2022年第31期126卷 191-202页

作者： Liwei Sun Lingjie Song Xu Zhang Shuaishuai Yuan Shifang Luan State Key laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China Key laboratory of Biobased Polymer materials of Shandong Provincial Education Department College of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China National Engineering laboratory for Medical Implantable devices WEGO Co.Ltd.Weihai 264210China

Hierarchical polymer brushes have been considered as an effective and promising method for preventing implant-associated infections via multiple antibacterial ***,a bacterial phosphatase re-sponsive surface with hierarchical zwitterionic structures was developed for timely dealing with the poly-meric implant-associated bacterial *** hierarchical polymeric architecture was subtly realized on model polypropylene(PP)substrate by sequential photo living grafting of poly(2-(dimethylamino)ethyl methacrylate(PDMAEMA)bottom layer and zwitterionic poly(sulfobetaine methacrylate)(PSBMA)upper layer,followed by the conversion of the PDMAEMA into the zwitterionic structure via succes-sive quaternization and phosphorylation *** to shielding the bottom polycations,the hi-erarchical zwitterionic polymer brushes guaranteed the surface with the optimal biocompatibility under the normal physiological *** bacteria are invaded,the surface bactericidal activity of the bottom layer can be rapidly and automatically activated owing to the transition triggered by bacterial phosphatase from zwitterion to ***,ameliorated by the upper layer,the hierarchical surface showed obvious adhesion resistance to dead bacterial cells and notably migrated the cytotoxic-ity of exposed polycation after completion of the bactericidal *** a proof-of-principle demonstration,this self-adaptive hierarchical surface with sensitive bacterial responsiveness and biocompatibility showed great potential in combating hernia mesh-related *** work provides a promising and universal strategy for the on-demand prevention of medical device-associated infections.

关键词： Bacterial infection Self-adaptive surface Bactericidal Antifouling Hierarchical polymer brushes

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Critical area computation for real defects and arbitrary conductor shapes

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Chinese Physics B 2006年第7期15卷 1621-1630页

作者：王俊平郝跃 Microelectronics Institute Xidian University Xi'an 710071 ChinaKey Laboratory of Ministry of Education for Wide Band-Cap Semiconductor Materials and Devices Xidian University Xi'an 710071 China

In current critical area models, it is generally assumed the defect outlines are circular and the conductors to be rectangle or the merger of rectangles. However, real defects and conductors associated with optimal layout design exhibit a great variety of shapes. Based on mathematical morphology, a new critical area model is presented, which can be used to estimate the critical area of short circuit, open circuit and pinhole. Based on the new model, the efficient validity check algorithms are explored to extract critical areas of short circuit, open circuit and pinhole from layouts. The results of experiment on an approximate layout of 4 × 4 shifts register show that the new model predicts the critical areas accurately. These results suggest that the proposed model and algorithm could provide new approaches for yield prediction.

关键词： real defects critical area model mathematical morphology yield estimation

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Magnetic characterization of a thin Co2MnSi/L10–MnGa synthetic antiferromagnetic bilayer prepared by MBE

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Chinese Physics B 2020年第10期29卷 479-483页

作者： Shan Li Jun Lu Si-Wei Mao Da-Hai Wei Jian-Hua Zhao State Key laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences(CAS)Beijing 100083China Center of materials Science and optoelectronics Engineering&CAS Center of Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Beijing Academy of Quantum Information Science Beijing 100193China

A synthetic antiferromagnet based on a thin antiferromagnetically coupled Co2MnSi/MnGa bilayer with Pt capping is proposed in this work. Square magnetic loops measured by anomalous Hall effect reveal that a well perpendicular magnetic anisotropy is obtained in this structure. A very large coercivity of 83 kOe (1 Oe = 79.5775 A⋅m^−1) is observed near the magnetic moment compensation point of 270 K, indicating an antiferromagnetic behavior. Moreover, the anomalous Hall signal does not go to zero even at the magnetic compensation point, for which the difficulty in detecting the conventional antiferromagnets can be overcome. By changing the temperature, the polarity of the spin–orbit torque induced switching is changed around the bilayer compensation point. This kind of thin bilayer has potential applications in spin–orbit-related effects, spintronic devices, and racetrack memories.

关键词： exchange coupling magnetization compensation anomalous Hall effect molecular-beam epitaxy

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Effect of external electric field on crystalline structure and dielectric properties of Bi_(1.5)MgNb_(1.5)O_(7) thin films

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Chinese Physics B 2021年第10期30卷 603-608页

作者： Zhongzhe Liu Libin Gao Kexin Liang Zhen Fang Hongwei Chen Jihua Zhang State Key laboratory of Electronic Thin Films and Integrated devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054China

Bismuth-based cubic pyrochlore materials have attractive dielectric properties,especially dielectric *** Bi_(1.5)MgNb_(1.5)O_(7) ceramic samples were prepared by solid state *** XRD results and SEM pictures prove the raw material are well mixed and co-fired and the BMN cubic pyrochlore is well crystallized,no second phase was found in the *** thin film were fabricated by depositing BMN ceramic nanoparticles on the *** BMN thin film has a high dielectric tunability of 43%at a bias voltage of 1.5 MV/cm,with loss tangent lower than 0.009.A Raman study of BMN cubic pyrochlore reveals O′-A-O′and O-A-O bending modes contribute to 80%of dielectric permittivity,obstructing these modes such as applying external electric field can have apparent influence on dielectric *** Phase calculation results shows that A2O′tetrahedrons are more easy to distort under an external *** A-site Mg have the highest displacement(0.765028 A),followed by A-site Bi cations(0.346317˚A).Compared to zero-bias thin film,˚the biased one with A-O and A-O′bonds being stretched and external coulomb force applied on cations and anions,the dielectric constant under bias field dramatically decreased.

关键词： cubic pyrochlore dielectric properties tunability DFT calculations

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Hydrothermal synthesis of two-dimensional MoS_(2)and its applications

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Tungsten 2019年第1期1卷 59-79页

作者： Xiaoyan Zhang Guoqing Ma Jun Wang laboratory of Micro-Nano Optoelectronic materials and devices Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of materials Science and Optoelectronic Engineering University of Chinese Academy of SciencesBeijing 100049China State Key laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China CAS Center for Excellence in Ultra-intense Laser Science(CEULS) Shanghai 201800China

Two-dimensional(2D)transition metal dichalcogenides(TMDs)have attracted tremendous attention because of their unique electronic,optical and chemical properties.2D TMDs,especially 2D MoS2,have been proved to show great potential in vari-ous applications such as sensing,hydrogen evolution and lithium ion ***,methods for the scalable preparation of 2D materials and 2D nanocomposites of high quality and low cost must be *** the various synthesis meth-ods,the hydrothermal synthesis method is simple and can meet the above *** this review,the recent advances in the controllable hydrothermal synthesis of 2D MoS_(2)and its nanocomposites by the hydrothermal synthesis method are *** provide insight into the growth mechanisms of few-layered 2D MoS_(2)with different morphologies and the key technologies to realize wafer-scale growth of continuous and homogeneous 2D films which are important for practical ***,the typical applications of TMDs in nonlinear optics as ultrafast optical modulation devices are pre-sented based on work of our *** more clarity,we summarize the current challenges of the hydrothermal synthesis method encountering,and suggest solutions to these challenges concerning future developments in practical applications.

关键词： Hydrothermal synthesis Transition metal dichalcogenides MoS_(2) Two dimension Nonlinear optics

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