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Bioinspired sensing-memory-computing integrated vision systems: biomimetic mechanisms, design principles, and applications

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Science china(Information Sciences) 2024年第5期67卷 5-27页

作者： Yujie HUANG Yinlong tan Yan KANG Yabo cHeN Yuhua tanG Tian JIANG Institute for Quantum Information and State Key Laboratory of High Performance computing College of Computer National University of Defense Technology college of Advanced Interdisciplinary Studies National University of Defense Technology Institute for Quantum Science and Technology College of ScienceNational University of Defense Technology

With the explosion of sensory data in the Internet of Things(Io T) era, conventional machine vision systems are becoming increasingly difficult to meet the requirements of high efficiency, low energy consumption, and low latency due to their inherent shortcomings of separate sensing, memory, and computing units. Inspired by the retina and neuromorphic computing, the sensing-memory-computing integrated vision system(SMcVS) that features low power consumption, low latency, and high parallelism has been considered a promising technology to surpass the von Neumann architecture and realize strong artificial ***, novel materials like two-dimensional semiconductors and quantum dots with novel optoelectronic performance provide hardware carriers for implementing integrated sensing-memory-computing architectures,attracting considerable attention. This paper reviews the recent research progress in bioinspired vision systems in terms of biomimetic mechanisms, design principles, computational architectures, and ***, the biomimetic mechanisms are illustrated to guide the design of high-performance artificial visual perception systems. Then the research progress of optoelectronic-synapse-based bioinspired vision systems in the device principles and applications including image filtering, color recognition, visual adaptation, and motion detection are summarized. Finally, the challenges and future developing directions of the SMcVS are provided regarding bionic application, architecture design, and device fabrication.

关键词： sensing-memory-computing architecture neuromorphic computing retinomorphic device image recognition visual system

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Interfacial reinforcement of core-shell HMX@energetic polymer composites featuring enhanced thermal and safety performance

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Defence Technology（防务技术） 2024年第1期31卷 387-399页

作者： Binghui Duan Hongchang Mo Bojun tan Xianming Lu Bozhou Wang Ning Liu Xi'an Modern chemistry Research Institute Xi'an710065People's Republic of China State Key Laboratory of Fluorine&Nitrogen chemicals Xi'an710065People's Republic of China

The weak interface interaction and solid-solid phase transition have long been a conundrum for 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane(HMX)-based polymer-bonded explosives(PBX).A two-step strategy that involves the pretreatment of HMX to endow—OH groups on the surface via polyalcohol bonding agent modification and in situ coating with nitrate ester-containing polymer,was proposed to address the *** types of energetic polyether—glycidyl azide polymer(GAP)and nitrate modified GAP(GNP)were grafted onto HMX crystal based on isocyanate addition reaction bridged through neutral polymeric bonding agent(NPBA)*** morphology and structure of the HMX-based composites were characterized in detail and the core-shell structure was *** grafted polymers obviously enhanced the adhesion force between HMX crystals and fluoropolymer(F2314)*** to the interfacial reinforcement among the components,the two HMX-based composites exhibited a remarkable increment of phase transition peak temperature by 10.2°c and 19.6°c with no more than 1.5%shell content,***,the impact and friction sensitivity of the composites decreased significantly as a result of the barrier produced by the grafted *** findings will enhance the future prospects for the interface design of energetic composites aiming to solve the weak interface and safety concerns.

关键词： HMX crystals Polyalcohol bonding agent energetic polymer core-shell structure Interfacial reinforcement

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Polyoxometalates-Modulated Hydrophilic-Hydrophobic composite Interfacial Material for efficient Solar Water evaporation and Salt Harvesting in High-Salinity Brine

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energy & environmental Materials 2024年第3期7卷 219-227页

作者： Sihang cheng cuimei Liu Yingqi Li Huaqiao tan Yonghui Wang Yangguang Li Key Laboratory of Polyoxometalate and Reticular Material chemistry of Ministry of education Faculty of ChemistryNortheast Normal UniversityChangchun 130024China

Solar vapor generation(SVc)represents a promising technique for seawater desalination to alleviate the global water crisis and energy *** of its main bottleneck problems is that the evaporation efficiency and stability are limited by salt crystallization under high-salinity ***,we demonstrate that the 3D porous melamine-foam(MF)wrapped by a type of self-assembling composite materials based on reduced polyoxometalates(*** blue,HPB),oleic acid(OA),and polypyrrole(PPy)(labeled with MF@HPB-PPy_(n)-OA)can serve as efficient and stable SVc material at high *** characterizations of MF@HPB-PPy_(n)-OA indicate that both hydrophilic region of HPBs and hydrophobic region of OA co-exist on the surface of composite materials,optimizing the hydrophilic and hydrophobic interfaces of the SVc materials,and fully exerting its functionality for ultrahigh water-evaporation and anti-salt *** optimal MF@HPB-PPy_(10)-OA operates continuously and stably for over 100 h in 10wt%***,MF@HPB-PPy_(10)-OA accomplishes complete salt-water separation of 10wt%brine with 3.3kgm^(-2)h^(-1)under 1-sun irradiation,yielding salt harvesting efficiency of 96.5%,which belongs to the record high of high-salinity systems reported so far and is close to achieving zero liquid ***,the low cost of MF@HPB-PPy_(10)-OA(2.56$m^(-2))suggests its potential application in the practical SVc technique.

关键词： heteropoly blue(HPB) hydrophilic-hydrophobic interface polyoxometalates(POM) salt-water separation solar vapor generation(SVG)

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exploration on electrical resistance tomography in characterizing the slurry spatial distribution in cemented granular materials

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Frontiers of Structural and civil engineering 2024年第3期18卷 365-379页

作者： Bohao WANG Wei WANG Feng JIN Handong tan Ning LIU Duruo HUANG State Key Laboratory of Hydroscience and engineering Tsinghua UniversityBeijing 100084China Institute of Science and Technology China Three Gorges CorporationBeijing 100038China School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China

This study investigated the application of electrical resistance tomography(eRT)in characterizing the slurry spatial distribution in cemented granular materials(cGMs).For cGM formed by self-flow grouting,the voids in the accumulation are only partially filled and the bond strength is often limited,which results in difficulty in obtaining in situ samples for quality ***,it is usually infeasible to evaluate the grouting effect or monitor the slurry spatial distribution by a mechanical *** this research,the process of grouting cement paste into high alumina ceramic beads(HAcB)accumulation is reliably monitored with *** shows that eRT results can be used to calculate the cement paste volume in the HAcB accumulation,based on calibrating the saturation exponent n in Archie’s *** results support the feasibility of eRT as an imaging tool in cGM characterization and may provide guidance for engineering applications in the future.

关键词： electrical resistance tomography cemented granular material grouting spatial distribution Archie’s law

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Transformer-Based cloud Detection Method for High-Resolution Remote Sensing Imagery

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computers, Materials & continua 2024年第7期80卷 661-678页

作者： Haotang tan Song Sun Tian cheng Xiyuan Shu Key Laboratory of GIS Application Research School of Geography and TourismChongqing Normal UniversityChongqing401331China college of computer and Information Science Chongqing Normal UniversityChongqing401331China Department of Military Installations Army Logistics AcademyChongqing401331China

cloud detection from satellite and drone imagery is crucial for applications such as weather forecasting and *** the limitations of conventional convolutional neural networks,we propose an innovative transformer-based *** method leverages transformers,which are adept at processing data sequences,to enhance cloud detection ***,we introduce a cyclic Refinement Architecture that improves the resolution and quality of feature extraction,thereby aiding in the retention of critical details often lost during cloud *** extensive experimental validation shows that our approach significantly outperforms established models,excelling in high-resolution feature extraction and precise cloud *** integrating Positional Visual Transformers(PVT)with this architecture,our method advances high-resolution feature delineation and segmentation ***,our research offers a novel perspective for surmounting traditional challenges in cloud detection and contributes to the advancement of precise and dependable image analysis across various domains.

关键词： cloud transformer image segmentation remotely sensed imagery pyramid vision transformer

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Synthesis of Self-assembled Star/Linear Block copolymer Blends via Aqueous RAFT Dispersion Polymerization

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chinese Journal of chemistry 2024年第14期42卷 1606-1614页

作者： Ruiming Wang Wenyu Zhu Li Zhang Xinxin Sheng Jianbo tan Department of Polymeric Materials and engineering School of Materials and EnergyGuangdong University of TechnologyGuangzhouGuangdong510006 China Guangdong Provincial Key Laboratory of Functional Soft condensed Matter GuangzhouGuangdong510006 China

Reversible addition-fragmentation chain transfer(RAFT)-mediated polymerization-induced self-assembly(PISA)of star block copolymer and linear block copolymer using a binary mixture of a star-like macro-RAFT agent and a linear macro-RAFT agent is *** this formulation,star block copolymer and diblock copolymer were formed simultaneously to generate colloidally stable star/linear block copolymer *** exclusion chromatography(Sec)analysis confirmed the presence of two types of polymers in the final *** molar ratio of the star-like macro-RAFT agent and the linear macro-RAFT agent has a significant impact on the morphology of polymer *** was found that increasing the amount of star-like macro-RAFT agent facilitated the formation of higher-order ***,effects of other reaction parameters including the length/number of the arm of the star-like macro-RAFT agent,degree of polymer(DP),monomer concentration on the morphology of star/linear block copolymer assemblies were also *** expect that this work will offer new possibilities for the scalable preparation of polymer assemblies with unique structures and functions.

关键词： Star block copolymer Reversible addition-fragmentation chain transfer Polymerization-induced self-assembly Livingpolymerization copolymers

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Training Generative Adversarial Networks with Adaptive composite Gradient

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Data Intelligence 2024年第1期6卷 120-157页

作者： Huiqing Qi Fang Li Shengli tan Xiangyun Zhang School of Mathematical Sciences East China Normal UniversityShanghai 200241China

The wide applications of Generative adversarial networks benefit from the successful training methods,guaranteeing that an object function converges to the local ***,designing an efficient and competitive training method is still a challenging task due to the cyclic behaviors of some gradient-based ways and the expensive computational cost of acquiring the Hessian *** address this problem,we proposed the Adaptive composite Gradients(AcG)method,linearly convergent in bilinear games under suitable *** analysis and toy-function experiments both suggest that our approach alleviates the cyclic behaviors and converges faster than recently proposed SOTA *** convergence speed of the AcG is improved by 33%than other *** AcG method is a novel Semi-Gradient-Free algorithm that can reduce the computational cost of gradient and Hessian by utilizing the predictive information in future *** mixture of Gaussians experiments and real-world digital image generative experiments show that our AcG method outperforms several existing technologies,illustrating the superiority and efficacy of our method.

关键词： Generative adversarial networks adaptive composite gradient semi-gradient free game theory bilinear game

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Integrated approach of predicting rock stability in high mountain valley underground caverns

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Underground Space 2024年第6期19卷 317-341页

作者： Fuyuan tan Haosen Guo Pengzhi Pan Zhaofeng Wang Xufeng Liu Yangyi Zhou east china Jiaotong University Nanchang 467200China State Key Laboratory of Geomechanics and Geotechnical engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China Key Laboratory of Liaoning Province on Deep engineering and Intelligent Technology Northeastern UniversityShenyang 110819China University of chinese Academy of Sciences Beijing 100049China

High mountain valleys are characterized by the development of intricate ground stress fields due to geological processes such as tectonic stress,river erosion,and rock *** processes introduce considerable stability concerns in the surrounding rock formations for underground engineering projects in these regions,highlighting the imperative need for rigorous stability assessments during the design phase to ensure construction *** paper introduces an innovative approach for the pre-evaluation of the stability of surrounding rocks in underground caverns situated within high mountain *** methodology comprises several pivotal ***,we conduct inverse calculations of the ground stress field in complex geological terrains,combining field monitoring and numerical ***,we ascertain stress-strength ratios of the surrounding rocks using various rock strength *** assess the stability characteristics of the surrounding rocks in the 1^(#)spillway cave within our project area,we employ numerical simulations to compute stress-strength ratios based on different rock strength ***,we undertake a comparative analysis,utilizing data from the 5^(#)Underground Laboratory(Lab 5)of Jinping II Hydropower Station,aligning the chosen rock strength criterion with the damage characteristics of Lab 50s surrounding *** analysis serves as the cornerstone for evaluating other mechanical responses of the surrounding rocks,thereby validating the pre-evaluation *** pre-evaluation method takes into account the intricate geological evolution processes specific to high mountain *** also considers the influence of the initial geostress field within the geological range of underground *** comprehensive approach provides a robust foundation for the analysis and assessment of the stability of surrounding rocks,especially in high mountain valley areas,during the design phase of underground engi

关键词： High mountain valley Underground cavern Stability of surrounding rock On-site monitoring Stress-strength ratio Numerical simulation

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Macrocyclic trichothecenes from Myrothecium verrucaria PA 57 and their cytotoxic activity

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chinese Journal of Natural Medicines 2024年第9期22卷 854-863页

作者： MO Jisong tan Yufen AI Wenjing LI Yunyun YUAN Yiyun JIANG Yueping XU Kangping tan Guishan WANG Wenxuan LI Jing LIU Shao Department of Pharmacy National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangsha 410008China Xiangya School of Pharmaceutical Sciences Central South UniversityChangsha 410008China

Four novel macrocyclic trichothecenes,termed mytoxins D-G(1-4),along with four known analogs(5-8),were isolated from the ethyl acetate extract of fermented rice inoculated with the fungus Myrothecium verrucaria *** compound features a tricyclic 12,13-epoxytrichothec-9-ene(ePT)***,mytoxin G(4)represents the first instance of a macrocyclic trichothecene incorporating a glucosyl unit within the trichothecene *** structures of the newly identified compounds were elucidated through comprehensive spectroscopic analysis combined with quantum chemical *** isolated compounds demonstrated cytotoxic activity against the cAL27 and HcT116 cell lines,which are models for human oral squamous cell carcinoma and colorectal cancer,***,mytoxin D(1)and mytoxin F(3)exhibited pronounced cytotoxic effects against both cancer cell lines,with Ic_(50)values ranging from 3 to 6 nmol·L^(-1).Moreover,compounds 1 and 3 were found to induce apoptosis in HcT116 cells by activating caspase-3.

关键词： Macrocyclic trichothecenes Myrothecium verrucaria cytotoxicity Secondary metabolite Soil fungi

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Rethinking multi-spatial information for transferable adversarial attacks on speaker recognition systems

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cAAI Transactions on Intelligence Technology 2024年第3期9卷 620-631页

作者： Junjian Zhang Hao tan Le Wang Yaguan Qian Zhaoquan Gu Guangzhou University GuangzhouChina Department of New Networks Peng Cheng LaboratoryShenzhenChina Harbin Institute of Technology(Shenzhen) ShenzhenChina Zhejiang University of Science and Technology HangzhouChina

Adversarial attacks have been posing significant security concerns to intelligent systems,such as speaker recognition systems(SRSs).Most attacks assume the neural networks in the systems are known beforehand,while black-box attacks are proposed without such information to meet practical *** black-box attacks improve trans-ferability by integrating multiple models or training on multiple datasets,but these methods are *** by the optimisation strategy with spatial information on the perturbed paths and samples,we propose a Dual Spatial Momentum Iterative Fast Gradient Sign Method(DS-MI-FGSM)to improve the transferability of black-box at-tacks against ***,DS-MI-FGSM only needs a single data and one model as the input;by extending to the data and model neighbouring spaces,it generates adver-sarial examples against the integrating *** reduce the risk of overfitting,DS-MI-FGSM also introduces gradient masking to improve *** authors conduct extensive experiments regarding the speaker recognition task,and the results demonstrate the effectiveness of their method,which can achieve up to 92%attack success rate on the victim model in black-box scenarios with only one known model.

关键词： speaker recognition spoofing attacks

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