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Observation of Topological Nodal-Ring Phonons in Monolayer Hexagonal Boron Nitride

Chinese Physics Letters 2025年第2期42卷 206-228页

作者： Zhiyu Tao Yani Wang Shuyi He Jiade Li Siwei Xue Zhibin Su Jiatao Sun Hailin Peng Jiandong Guo Xuetao Zhu Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China Center for Nanochemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School of Integrated Circuits and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing 100081China Beijing Graphene Institute Beijing 100095China Department of Physics Fuzhou UniversityFuzhou 350108China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

Topological physics has evolved from its initial focus on fermionic systems to the exploration of bosonic systems,particularly phononic excitations in crystalline ***-dimensional(2D)topological phonons emerge as promising candidates for future technological ***,experimental verification of 2D topological phonons has remained exclusively limited to graphene,a constraint that hinders their applications in phononic ***,we report experimental evidence of topological phonons in monolayer hexagonal boron nitride using advanced high-resolution electron energy loss *** high-precision measurements explicitly demonstrate two topological nodal rings in monolayer hexagonal boron nitride,protected by mirror symmetry,expanding the paradigm of 2D topological phonons beyond *** research not only deepens fundamental understanding of 2D topological phonons,but also establishes a phononic device platform based on wide-bandgap insulators,crucial for advancements in electronics and photonics applications.

关键词： spectroscopy topological hexagonal

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Position Errors and Interference Prediction-Based Trajectory Tracking for Snake Robots

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IEEE/CAA Journal of Automatica Sinica 2023年第9期10卷 1810-1821页

作者： Dongfang Li Yilong Zhang Ping Li Rob Law Zhengrong Xiang Xin Xu Limin Zhu Edmond Q.Wu IEEE School of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108 the Sino-US Global Logistics Institute Shanghai Jiao Tong UniversityShanghai 200240 the Key Laboratory for Agricultural Machinery Intelligent Control and Manufacturing of Fujian Education Institutions Fuzhou 350108China School of Biological Science and Medical Engineering and the Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beihang UniversityBeijing 100191China University of Macao Macao 999078China School of Automation Nanjing University of Science and TechnologyNanjing 210094China College of Intelligence Science and Technology National University of Defence TechnologyChangsha 410073China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

This work presents a trajectory tracking control method for snake *** method eliminates the influence of time-varying interferences on the body and reduces the offset error of a robot with a predetermined *** optimized line-of-sight(LOS)guidance strategy drives the robot’s steering angle to maintain its anti-sideslip ability by predicting position errors and ***,the predictions of system parameters and viscous friction coefficients can compensate for the joint torque control *** compensation is adopted to enhance the compatibility of a robot within ever-changing *** and experimental outcomes show that our work can decrease the fluctuation peak of the tracking errors,reduce adjustment time,and improve accuracy.

关键词： Anti-sideslip compensation snake robot trajectory tracking

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Step-by-Step: controlling Arbitrary Style in Text with Large Language Models 30

Step-by-Step: Controlling Arbitrary Style in Text with Large...

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Joint 30th International Conference on Computational Linguistics and 14th International Conference on Language Resources and Evaluation, LREC-COLING 2024

作者： Liu, Pusheng Wu, Lianwei Wang, Linyong Guo, Sensen Liu, Yang National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology School of Computer Science Northwestern Polytechnical University China Research & Development Institute of Northwestern Polytechnical University Shenzhen China Chongqing Science & Technology Innovation Center of Northwestern Polytechnical University China State Key Laboratory of Integrated Service Networks Xidian University China School of Artificial Intelligence Optics and Electronics Northwestern Polytechnical University China

ISBN: (纸本)9782493814104

Recently, the autoregressive framework based on large language models (LLMs) has achieved excellent performance in controlling the generated text to adhere to the required style. These methods guide LLMs through prompt learning to generate target text in an autoregressive manner. However, this manner possesses lower controllability and suffers from the challenge of accumulating errors, where early prediction inaccuracies might influence subsequent word generation. Furthermore, existing prompt-based methods overlook specific region editing, resulting in a deficiency of localized control over input text. To overcome these challenges, we propose a novel three-stage prompt-based approach for specific region editing. To alleviate the issue of accumulating errors, we transform the text style transfer task into a text infilling task, guiding the LLMs to modify only a small portion of text within the editing region to achieve style transfer, thus reducing the number of autoregressive iterations. To achieve an effective specific editing region, we adopt both prompt-based and word frequency-based strategies for region selection, subsequently employing a discriminator to validate the efficacy of the selected region. Experiments conducted on several publicly competitive datasets for text style transfer task confirm that our proposed approach achieves state-of-the-art performance. © 2024 ELRA Language Resource Association: CC BY-NC 4.0.

关键词： Computational linguistics

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Accelerating the control and Elimination of Major Parasitic Diseases in China—On World NTD Day 2024

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China CDC weekly 2024年第6期6卷 95-99页

作者： Yuwan Hao Tian Tian Zelin Zhu Yijun Chen Jing Xu Shuai Han Menbao Qian Yi Zhang Shizhu Li Qiang Wang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute of Parasitic DiseasesChinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)Key Laboratory on Parasite and Vector BiologyMinistry of HealthWHO Centre for Tropical Diseases National Center for International Research on Tropical Diseases Ministry of Science and TechnologyShanghaiChinaSchool of Global HealthChinese Center for Tropical Diseases Research-Shanghai Jiao Tong University School of MedicineShanghaiChina

Neglected tropical diseases(NTDs)are a group of diseases associated with poverty that affect over 1 billion people worldwide(1).On May 31,2021,the World Health Assembly(WHA)officially recognized January 30 as World Neglected Tropical Diseases Day through decision WHA74(18).This designation aims to raise awareness about the severe impact of NTDs on disadvantaged populations and to mobilize support for control,elimination,and eradication efforts.

关键词： Diseases diseases disadvantage

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Mechanism of iron on the intestinal epithelium development in suckling piglets

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science China(Life sciences) 2023年第9期66卷 2070-2085页

作者： Lanmei Yin Yitong Zhang Jun Li Jing Zhou Qiye Wang Jing Huang Jianzhong Li Huansheng Yang Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China Key Laboratory of Agro-ecological Processes in Subtropical Region Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin 300308China State Key Laboratory of Food Safety Technology for Meat Products Yinxiang GroupFujian Aonong BiologicaI Science and Technology Group Co.Ltd.Key Laboratory of Swine Nutrition and Feed Science of Fujian ProvinceZhangzhou 363000China

This study aimed to investigate the mechanism of iron on intestinal epithelium development of suckling piglets. Compared with newborn piglets, 7-day-old and 21-day-old piglets showed changes in the morphology of the jejunum, increased proliferation,differentiated epithelial cells, and expanded enteroids. Intestinal epithelium maturation markers and iron metabolism genes were significantly changed. These results suggest that lactation is a critical stage in intestinal epithelial development, accompanied by changes in iron metabolism. In addition, deferoxamine(DFO) treatment inhibited the activity of intestinal organoids at passage 4(P4) of 0-day-old piglets, but no significant difference was observed in epithelial maturation markers at passage 1(P1) and P4,and only argininosuccinate synthetase 1(Ass1) and β-galactosidase(Gleb) were up-regulated at passage 7(P7). These results in vitro show that iron deficiency may not directly affect intestinal epithelium development through intestinal stem cells(ISCs). The iron supplementation significantly down-regulated the m RNA expression of interleukin-22 receptor subunit alpha-2(IL-22RA2)in the jejunum of piglets. Furthermore, the m RNA expression of IL-22 in 7-day-old piglets was significantly higher than that in0-day-old piglets. Adult epithelial markers were significantly up-regulated in organoids treated with recombinant murine cytokine IL-22. Thus, IL-22 may play a key role in iron-affecting intestinal epithelium development.

关键词： iron suckling piglets intestinal epithelium development interleukin-22

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Feeding mediated web-building plasticity in a cobweb spider

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Current Zoology 2023年第6期69卷 756-765页

作者：张海新李刚李长春陈建赵泽宇张士昶刘杰 State Key Laboratory of Biocatalysis and Enzyme Engineering&Centre for Behavioral Ecology and Evolution School of Life SciencesHubei UniversityWuhan430062China National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables College of Life Science and TechnologyHubei Engineering UniversityXiaogan 432000China Hubei Key Laboratory of Regional Development and Environmental Response Faculty of Resources and Environmental ScienceHubei UniversityWuhan 430062China

Behavioral plasticity has been proposed as a means by which animals alter their phenotypes in response to changing *** may display behavioral plasticity as a consequence of environmental *** detritus-based,bell-shaped cobweb spider Campanicola campanulata is an ideal model to study behavioral plasticity,because its web architecture is easy to be quantified,and the functions of different parts of the web are *** the plasticity of cobweb architecture has been reported in a few species,retreats as impor-tant defensive structures have rarely been considered before because retreats in most cobwebs are relatively small compared with the web *** studied the web-building behaviors of *** under different feeding *** set up 3 spider treatments with different feeding conditions:marginally well fed,moderately well fed,and extremely well fed,and observed the differences in the web architecture among *** addition,we measured the mechanical properties of anchor silk,and also calculated the foraging and defense investment of the *** results showed that marginally well-fed spiders build cobwebs with significantly longer length of anchor silk,lower retreat to the ground,more number and longer gumfooted lines,and larger capture area,while extremely well-fed spiders build cobwebs with significantly bigger retreat volume and higher height of retreat to the *** addition,marginally well-fed spiders invest significantly less during cobweb ***,there was no significant difference between the breaking force and elongation at break in anchor silk among different *** results demonstrated that marginally well-fed spiders invest more in foraging,and extremely well-fed spiders invest more in defense,and the spider made a balance between foraging and predator avoidance in response to changes in physiological *** study strengthens the current understanding of web construction in cobweb spider

关键词： behavioral plasticity Campanicola campanulata cobweb spider defense foraging

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Superconducting nanostrip single photon detectors fabricated of aluminum thin-films

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Superconductivity 2024年第2期10卷 13-17页

作者： Yuting Jiang Xingyu Zhang Hui Zhou Xiaofu Zhang Hao Li Lixing You National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences(CAS)865 Changning Rd.Shanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan UniversityNo.58Renmin AvenueHaikouHainan 570228China

We systematically investigated the detection performance of Al nanostrips for single photons at various *** Al films were deposited using magnetron sputtering,and the sophisticated nanostructures and morphology of the deposited films were revealed through high-resolution transmission electron *** fabricated Al meander nanostrips,with a thickness of 4.2 nm and a width of 178 nm,exhibited a superconducting transition temperature of 2.4 K and a critical current of approximately 5μA at 0.85 *** the Al nanostrips demonstrated a saturated internal quantum efficiency for 405-nm photons,the internal detection efficiency exhibited an exponential dependence on bias current without any saturation tendency for 1550-nm *** behavior can be attributed to the relatively large diffusion coefficient and coherence length of the Al *** further narrowing the nanostrip width,the Al-SNSPDs remain capable of effectively detecting single telecom photons to facilitate practical applications.

关键词： Aluminum thin-film Superconducting film Superconducting nanostrip single-photon detector

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Yolov3-tesseract model for improved intelligent form recognition

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Recent Advances in Computer science and Communications 2021年第6期14卷 1833-1842页

作者： Yun-An, Zhang Ziheng, Pan Hongyan, Dui Guanghan, Bai Key Laboratory of Science and Technology on Integrated Logistics Support Intelligence Science College National University of Defense Technology Changsha China School of Management Engineering Zhengzhou University Zhengzhou China

Background: YOLOv3-Tesseract is widely used for the intelligent form recognition because it exhibits several attractive properties. It is important to improve the accuracy and efficiency of the optical character recognition. Methods: The YOLOv3 exhibits the classification advantages for the object detection. Tesseract can effectively recognize regular characters in the field of the optical character recognition. In this study, a YOLOv3 and Tesseract-based model of improved intelligent form recognition is proposed. Results: First, YOLOv3 is trained to detect the position of the text in the table and to subsequently segment text blocks. Second, Tesseract is used to individually detect text blocks and combine YOLOv3 and Tesseract to achieve the goal of table character recognition. Conclusion: Based on the Tianchi big data, experimental simulation is used to demonstrate the proposed method. The YOLOv3-Tesseract model is trained and tested to effectively accomplish the recognition task. © 2021 Bentham science Publishers.

关键词： Optical character recognition

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Different surface modification methods and coating materials of zinc metal anode

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Journal of Energy Chemistry 2022年第3期31卷 397-412,I0011页

作者： Feng Tao Yong Liu Xinyuan Ren Jing Wang Yazhou Zhou Yingjie Miao Fengzhang Ren Shizhong Wei Jianmin Ma Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023HenanChina National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of High-Temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471003HenanChina School of Art&Design Henan University of Science and TechnologyLuoyang 471023HenanChina School of Physics and Electronics Hunan UniversityChangsha 410082HunanChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

Rechargeable aqueous Zn-ion batteries(AZIBs)are one of the most promising energy storage devices for large-scale energy storage owing to their high specific capacity,eco-friendliness,low cost and high ***,zinc metal anodes suffer from severe dendrite growth and side reactions,resulting in the inferior electrochemical performance of *** address these problems,surface modification of zinc metal anodes is a facile and effective method to regulate the interaction between the zinc anode and an *** this review,the current challenges and strategies for zinc metal anodes are ***,recent advances in surface modification strategies to improve their electrochemical performance are concluded and ***,challenges and prospects for future development of zinc metal anodes are *** hope this review will be useful for designing and fabricating highperformance AZIBs and boosting their practical applications.

关键词： Zn-ion batteries Zinc metal anode Surface modification Solvent casting method Wet chemistry method

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Dynamic Characteristics of Rotor System with a Slant Crack Based on Fractional Damping

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Chinese Journal of Mechanical Engineering 2021年第2期34卷 79-96页

作者： Zhinong Li Yunlong Li Dong Wang Zhike Peng Haifeng Wang Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063China Laboratory of Science and Technology on Integrated Logistics Support National University of Defense TechnologyChangsha 410073China State Key Laboratory of Mechanical Systems and Vibration Shanghai Jiaotong UniversityShanghai 200240China

The traditional modeling method of rotor system with a slant crack considers only integer-order ***,the model of rotor system based on integer-order calculus can merely describe local characteristics,not historical dependent *** occur of fractional order calculus just makes up for the deficiency in integer-order ***,a new dynamic model with a slant crack based on fractional damping is ***,the stiffness of rotor system with a slant crack is solved by zero stress intensity factor *** proposed model is simulated by Runge-Kutta method and continued fraction Euler *** influence of the fractional order,rotating speed,and crack depth on the dynamic characteristics of rotor system is *** simulation results show that the amplitude of torsional excitation frequency increases significantly with the increase of the fractional *** the increase of the rotating speed,the amplitude of first harmonic component becomes gradually larger,the amplitude of the second harmonic becomes smaller,while the amplitude of the other frequency components is almost *** shaft orbit changes gradually from an internal 8-type shape to an ellipse-type shape without *** the increase of the slant crack depth,the amplitude of the transverse response frequency in the rotor system with a slant crack increases,and the amplitude in the second harmonic component also increases *** addition,the torsional excitation frequency and other coupling frequency components also *** proposed model is further verified by the *** valuable conclusion can provide an important guideline for the fault diagnosis of rotor system with a slant crack.

关键词： Fractional calculus Slant crack Rotor system Dynamic characteristics

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