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Journal of Safety Science and Resilience 2022年第2期3卷 179-188页

作者： Zhiming Ding Xinrun Xu Shan Jiang Jin Yan Yanbo Han University of Chinese Academy of Sciences Beijing100049China institute of Software Chinese Academy of Sciences Beijing050052China Beijing Key Laboratory on Integration and Analysis of large-scale Stream Data Beijing100124China North China University of Technology Beijing100144China

This study aimed to address the problem of post-disaster emergency material dispatching from multiple supply points to multiple demand *** large-scale natural disasters,it is very important for multiple emergency material supply points to serve as sources of materials for multiple disaster sites and to determine emergency material scheduling solutions ***,the quantity of emergency materials required at each disaster site is *** address this issue,in this study,we developed an emergency material scheduling model with multiple logistics supply points for multiple demand points based on the grey interval *** optimize the proposed multi-supply-point and multi-demand-point emergency material scheduling mode,a multi-objective optimization algorithm based on a genetic algorithm was *** results demonstrate that the multi-objective optimization method can solve the emergency logistics scheduling problem better than the particle swarm optimization multi-objective solution ***,the multi-supply point and multi-demand point emergency material dispatch model and optimization algorithm provides robust support for emergency management system decision-makers when they need to respond quickly to disaster relief activities.

关键词： Emergency logistics scheduling Multi-objective programming Disaster relief

Recent advances of defect-induced spin and valley polarized states in graphene

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Chinese Physics B 2022年第8期31卷 48-56页

作者： Yu Zhang Liangguang Jia Yaoyao Chen Lin He Yeliang Wang School of integrated circuits and Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing 100081China Advanced Research institute of Multidisciplinary Sciences Beijing Institute of TechnologyBeijing 100081China Center for Advanced Quantum Studies Department of PhysicsBeijing Normal UniversityBeijing 100875China

Electrons in graphene have fourfold spin and valley degeneracies owing to the unique bipartite honeycomb lattice and an extremely weak spin-orbit coupling,which can support a series of broken symmetry ***-scale defects in graphene are expected to lift these degenerate degrees of freedom at the nanoscale,and hence,lead to rich quantum states,highlighting promising directions for spintronics and *** this article,we mainly review the recent scanning tunneling microscopy(STM)advances on the spin and/or valley polarized states induced by an individual atomicscale defect in graphene,including a single-carbon vacancy,a nitrogen-atom dopant,and a hydrogen-atom ***,we give a perspective in this field.

关键词： graphene atomic-scale defect broken symmetry spin and valley polarized states

Differential Fault Analysis on 3DES Middle Rounds Based on Error Propagation

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Chinese Journal of Electronics 2022年第1期31卷 68-78页

作者： MA Xiangliang ZHANG Lizhen WU Liji LI Xia ZHANG Xiangmin LI Bing LIU Yuling School of integrated circuits Tsinghua University Beijing National Research Center for Information Science and Technology National Research Center for Information Technology Security institute of Information Engineering Chinese Academy of Sciences School of Cyber Security University of Chinese Academy of Sciences

Since differential fault analysis(DFA)was first implemented on data encryption standard(DES), many scholars have improved this attack and extended the limit of the original last two rounds to the earlier rounds. However, the performance of the novel attacks which target middle rounds is not effective, i.e. the number of correct/incorrect ciphertexts required is very large and the recovered result maybe not correct. We address this problem by presenting new DFA methods that can break 3 DES when injecting faults at round 12 or *** simulating the process of single-bit error propagation,we have built two kinds of error propagation models as well as an intermediate error propagation state *** we simplify the intermediate states into state templates that will be further used to locate the injected fault position, which is the main difficulty of implementing fault injection in the middle rounds. Finally, in terms of the idea of error propagation and probability theory, we can recover the last round key only using 2 sets of correct/incorrect ciphertexts when inducting fault in the13 th round and 4 sets of correct/incorrect ciphertexts when inducting fault in the 12 th round.

关键词： intermediate error propagation state table injected fault position 3DES middle rounds cryptography probability theory state templates fault diagnosis data encryption standard error statistics error propagation models fault injection single-bit error propagation DFA methods inducting fault differential fault analysis

Harpoon-shaped topological photonic crystal for on-chip beam splitter

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 91-98页

作者： Zhiwei Guan Ruixue Dou Chuangxin Xie Tianyimei Zuo Liyu Huang Keyin Wen Chaofeng Wang Huapeng Ye Junmin Liu Ze Dong Dianyuan Fan Shuqing Chen institute of Microscale Optoelectronics Shenzhen UniversityShenzhen 518060China College of Physics and Engineering Technology Minzu Normal University of XingyiXingyi 562400China Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and institute of Electronic Paper Displays South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou 510006China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China School of information and Electronics Beijing Institute of TechnologyBeijing 100081China

The advancement of integrated optical communication networks necessitates the deployment of on-chip beam splitters for efficient signal interconnections at network ***,the pursuit of micron-scale beam splitting with large corners and reducing the device footprint to boost connection flexibility often results in phase *** mismatches,which stem from radiation modes and backward scattering,pose significant obstacles in creating highly integrated and interference-resistant *** address this,we introduce a solution based on the topological valley-contrasting state generated by photonic crystals with opposing valley Chern numbers,manifested in a harpoon-shaped structure designed to steer the splitting *** approach enables adiabatic mode field evolution over large corners,capitalizing on the robust phase modulation capabilities and topological protection provided by the subwavelength-scale valley-contrasting *** demonstration reveals that beam splitters with large corners of 60°,90°,and 120°exhibit insertion loss fluctuations below 2.7 dB while maintaining a minimal footprint of 8.8μm×8.8μ*** a practical demonstration,these devices facilitate three-channel signal connections,successfully transmitting quadrature phase shift keying signals at 3.66 Tbit/s with bit error rates below the forward error correction threshold,demonstrating performance comparable to that in defects *** harnessing the unidirectional excitation feature,we anticipate significant enhancements in the capabilities of signal distribution and connection networks through a daisy chain configuration.

关键词： channel interconnection on-chip beam splitter topological valley-contrasting state

Feasibility and Challenges of Interactive AI for Traditional Chinese Medicine: An Example of ChatGPT

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Chinese Medicine and Culture 2024年第2期7卷 174-181页

作者： KONG Qi CHEN Liming YAO Jingyi DING Chao YIN Peihao Putuo Hospital Shanghai University of Traditional Chinese MedicineShanghai 200062China Interventional Cancer institute of Chinese Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghai 200062China Yueyang Hospital of integrated Traditional Chinese and Western Medicine Shanghai University of Traditional Chinese MedicineShanghai 200082China

As a complementary and alternative medicine(CAM),traditional Chinese medicine(TCM)represents an established medical system with a rich history and abundant clinical *** is an empirical medicine,the process of which is analogous to ChatGPT’s learning and development *** TCM,inquiry is a relatively objective way of traditional syndrome *** various artificial intelligence systems related to TCM consultation exist,their interactive abilities remain *** study standardized the primary complaint and instructed ChatGPT to simulate a TCM practitioner,conducting three comprehensive inquiry *** results yielded unexpected conclusions,revealing that ChatGPT could simulate a TCM practitioner’s inquiry with patients,confirming its potential in the field of TCM ***,current applications still pose certain limitations and ***,to integrate ChatGPT-like language models with traditional TCM AI to establish an associative mode that can facilitate TCM diagnosis and treatment with more convenience and standardization is crucial,yet at the same time,it should be treated very carefully.

关键词： Traditional Chinese medicine Artificial intelligence ChatGPT

Copper coordination-driven self-assembly and encapsulation of PCR reagents

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Chinese Chemical Letters 2024年第3期35卷 189-192页

作者： Chang Lu Jinkai Zheng Juewen Liu institute of Food Science and Technology Chinese Academy of Agricultural SciencesBeijing 100193China Department of Chemistry Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooONN2L 3G1Canada

Polymerase chain reactions(PCR)are a very important tool for use in cloning,nucleic acid sequencing and diagnostic *** storage conditions of PCR reagents are limited to freezing and a lot of mixing steps are *** this paper,we report using metal ions to form coordination nanomaterials with the intrinsic components of the PCR reagents including dNTP,DNA primers and DNA polymerase as an integrated PCR reaction *** complete PCR reactions,users need only to dissolve the coordination nanomaterials with a buffer and add template DNA.A few transition metal ions were screened and Cu^(2+)was found to be the most effective metal ion for this *** the encapsulation efficiency of PCR reagents was measured,which can reach close to 100%for the primers and DNA polymerase,but only 10%for dNTP because dNTP was *** study also exhibited this integrated PCR reaction system can be used for DNA detection with a similar detection limit to the normal PCR,and showed good stability of encapsulated PCR nanomaterial after storage for a week.

关键词： Metal ions Coordination Encapsulation PCR Storage

Quantized Redshift and its Significance for Recent Observation

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Research in Astronomy and Astrophysics 2024年第9期24卷 156-166页

作者： Arindam Mal Sarbani Palit Christopher C.Fulton Sisir Roy Indian Space Research Organization Space Applications CentreAhmedabadIndia Indian Statistical institute CVPR UnitKolkataIndia Protostar Inc.15652 Carrousel DriveCanyon CountryCA 91387USA National institute of Advanced Studies IISC CampusBangaloreIndia

With the recent observational evidence in extragalactic astronomy,the interpretation of the nature of quasar redshift continues to be a research *** high redshifts are being detected for extragalactic objects that are presumably very distant and young while also exhibiting properties that are characteristic of a more mature galaxy such as *** to Halton Arp and Geoffrey Burbidge,redshift disparities consist of an intrinsic component and are related to an evolutionary *** observed redshift periodicity at integer multiples of0.089 in log scale and Burbidge observed redshift periodicity at integer multiples of 0.061 in linear *** Singular Value Decomposition based periodicity estimation is known to be superior for noisy data sets,especially when the data contain multiple harmonics and overtones,mainly irregular in nature,we have chosen it to be our primary tool for analysis of the quasar-galaxy pair redshift *** have observed a fundamental periodicity of0.051 with a confidence interval of 95%in linear scale with the site-available Sloan Digital Sky Survey Data Release 7(SDSS DR7)quasar-galaxy pair data *** have independently generated quasar-galaxy pair data sets from both 2d F and SDSS and found fundamental periodicities of 0.077 and 0.089,respectively,in log scale with a confidence interval of 95%.

关键词： galaxies:distances and redshifts (galaxies:)quasars:absorption lines cosmology:observations

Frameworked electrolytes:Ionic transport behavior and high mobility for solid state batteries

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InfoMat 2024年第2期6卷 76-89页

作者： Jianguo Sun Hao Yuan Jing Yang Tuo Wang Yulin Gao Qi Zhao Ximeng Liu Haimei Wang Yong-Wei Zhang John Wang Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore institute of High Performance Computing(IHPC) Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore ST Engineering Advanced Material Engineering Pte.Ltd. SingaporeSingapore National University of Singapore(Chongqing)Research institute Chongqing Liang Jiang New AreaChongqingthe People's Republic of China institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore

All solid-state batteries(ASSBs)are the holy grails of rechargeable batteries,where extensive searches are ongoing in the pursuit of ideal solid-state ***,there is still a long way off to the satisfactorily high(enough)ionic conductivity,long-term stability and especially being able to form compatible interfaces with the solid ***,we have explored ionic transport behavior and high mobility in the sub-nano pore networks in the framework ***,the frameworked electrolyte behaves as a solid,and however in the(sub)-nano scales,the very limited number of solvent molecules in confinement makes them completely different from that in liquid *** from a liquid-electrolyte counterpart,the interactions between the mobile ions and surrounding molecules are subject to dramatic changes,leading to a high ionic conductivity at room temperature with a low activation ***+ions in the sub-nano cages of the network structure are highly mobile and diffuse rather independently,where the rate-limiting step of ions crossing cages is driven by the local concentration gradient and the electrostatic interactions between Li^(+)*** new class of frameworked electrolytes(FEs)with both high ionic conductivity and desirable interface with solid electrodes are demonstrated to work with Li-ion batteries,where the ASSB with LiFePO_(4)shows a highly stable electrochemical performance of over 450 cycles at 2℃ at room temperature,with an almost negligible capacity fade of 0.03‰ each *** addition,the FE shows outstanding flexibility and anti-flammability,which are among the key requirements of large-scale applications.

关键词： frameworked electrolyte macroscopically solid with 3D ionic channels in sub-nano-scales solid-state battery space confinement of Li ions

Directly modulated 25 Gbaud/s tunable in-series DFB laser array for WDM systems

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Chinese Optics Letters 2023年第1期21卷 85-90页

作者：孙振兴王亚光肖如磊王磊磊龚洋洋邱逸仁陈向飞 Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education&Nanjing University-Tongding Joint Lab for large-scale Photonic integrated circuits&National Laboratory of Solid-State Microstructures&College of Engineering and Applied Science&institute of Optical Communication Engineering Nanjing UniversityNanjing 210093China Department of Photonics and institute of Electro-Optical Engineering Taiwan Sun Yat-sen UniversityKaohsiung 80424China

In this Letter,we proposed and experimentally demonstrated a directly modulated tunable laser based on the multi-wavelength distributed feedback(DFB)laser *** lasers are placed in series to avoid the usage of an optical combiner and additional power loss.A three-section design is utilized to reduce the interference from other lasers and improve the electro-optic response ***,the reconstruction-equivalent-chirp technique is used to simplify the grating fabrication and precisely control the grating *** realized 12 channels with 100 GHz spacing with high side mode suppression ratios of above 50 *** output power of all the channels is above 14 *** 3 dB electro-optic bandwidth is above 20 GHz at a bias current of 100 mA for all four lasers.A 25 Gb/s data transmission over a standard single-mode fiber of up to 10 km is demonstrated for all 12 channels,and 50 Gb/s data per wavelength is obtained through the four-level pulse amplitude *** proposed directly modulated tunable in-series DFB laser array shows the potential for a compact and low-cost light source for wavelength division multiplexing(WDM)systems,such as next-generation front-haul networks and passive optical networks.

关键词： tunable laser directly modulated laser laser array wavelength division multiplexing