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Angular momentum holography via a minimalist metasurface for optical nested encryption

Light(Science & Applications) 2023年第4期12卷 646-656页

作者： Hui Yang Peng He kai ou Yueqiang Hu Yuting Jiang Xiangnian ou Honghui Jia Zhenwei Xie Xiaocong Yuan Huigao Duan National Research Center for High-Efficiency Grinding College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China Nanophotonics Research Center Shenzhen Key Laboratory of Micro-scale Optical Information TechnologyInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060GuangdongChina Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou 511300Guangdong ProvinceChina

Metasurfaces can perform high-performance multi-functional integration by manipulating the abundant physical dimensions of light,demonstrating great potential in high-capacity information *** orbital angular momentum(OAM)and spin angular momentum(SAM)dimensions have been respectively explored as the independent carrier for information ***,fully managing these two intrinsic properties in information multiplexing remains ***,we propose the concept of angular momentum(AM)holography which can fully synergize these two fundamental dimensions to act as the information carrier,via a single-layer,non-interleaved *** underlying mechanism relies on independently controlling the two spin eigenstates and arbitrary overlaying them in each operation channel,thereby spatially modulating the resulting waveform at *** a proof of concept,we demonstrate an AM meta-hologram allowing the reconstruction of two sets of holographic images,i.e.,the spin-orbital locked and the spin-superimposed ***,leveraging the designed dual-functional AM meta-hologram,we demonstrate a novel optical nested encryption scheme,which is able to achieve parallel information transmission with ultra-high capacity and *** work opens a new avenue for optionally manipulating the AM,holding promising applications in the fields of optical communication,information security and quantum science.

关键词： momentum dimensions orbital

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Construction of an immune-related gene signature for overall survival prediction and immune infiltration in gastric cancer

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 919-932页

作者： Xiao-Ting Ma Xiu Liu kai ou Lin Yang Department of Medical Oncology Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

BACKGRouND Treatment options for patients with gastric cancer(GC)continue to improve,but the overall prognosis is *** use of PD-1 inhibitors has also brought benefits to patients with advanced GC and has gradually become the new standard treatment option at present,and there is an urgent need to identify valuable biomarkers to classify patients with different characteristics into *** To determined the effects of differentially expressed immune-related genes(DEIRGs)on the development,prognosis,tumor microenvironment(TME),and treatment response among GC patients with the expectation of providing new biomarkers for personalized treatment of GC *** Gene expression data and clinical pathologic information were downloaded from The Cancer Genome Atlas(TCGA),and immune-related genes(IRGs)were searched from *** were extracted from the intersection of the differentially-expressed genes(DEGs)and IRGs *** enrichment pathways of key genes were obtained by analyzing the Kyoto Encyclopedia of Genes and Genomes(KEGGs)and Gene Ontology(GO)*** identify genes associated with prognosis,a tumor risk score model based on DEIRGs was constructed using Least Absolute Shrinkage and Selection Operator and multivariate Cox *** tumor risk score was divided into high-and lowrisk *** entire cohort was randomly divided into a 2:1 training cohort and a test cohort for internal validation to assess the feasibility of the risk *** infiltration of immune cells was obtained using‘CIBERSORT,’and the infiltration of immune subgroups in high-and low-risk groups was *** GC immune score data were obtained and the difference in immune scores between the two groups was *** We collected 412 GC and 36 adjacent tissue samples,and identified 3627 DEGs and 1311 IRGs.A total of 482 DEIRGs were *** analysis showed that DEIRGs were mainly distributed in immunoglobulin complexes,receptor ligand activity,and s

关键词： Differentially expressed immune-related gene Immunotherapy Gastric cancer Risk score

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Enhanced vision-transformer integrating with semi-supervised transfer learning for state of health and remaining useful life estimation of lithium-ion batteries

Energy and AI

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Energy and AI 2024年第3期17卷 380-396页

作者： Ya-Xiong Wang Shangyu Zhao Shiquan Wang kai ou Jiujun Zhang School of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China

The state of health(SOH)and remaining useful life(RUL)of lithium-ion batteries are crucial for health management and ***,most data-driven estimation methods heavily rely on scarce labeled data,while traditional transfer learning faces challenges in handling domain shifts across various battery *** paper proposes an enhanced vision-transformer integrating with semi-supervised transfer learning for SOH and RUL estimation of lithium-ion batteries.A depth-wise separable convolutional vision-transformer is developed to extract local aging details with depth-wise convolutions and establishes global dependencies between aging information using multi-head *** mean discrepancy is employed to initially reduce the distribution difference between the source and target domains,providing a superior starting point for fine-tuning the target domain ***,the abundant aging data of the same type as the target battery are labeled through semi-supervised learning,compensating for the source model's limitations in capturing target battery aging *** regularization incorporates the cross-entropy between predictions with and without adversarial perturbations into the gradient backpropagation of the overall *** particular,across the experimental groups 13–15 for different types of batteries,the root mean square error of SOH estimation was less than 0.66%,and the mean relative error of RUL estimation was 3.86%.Leveraging extensive unlabeled aging data,the proposed method could achieve accurate estimation of SOH and RUL.

关键词： State of health(S0H) Remaining useful life(RUL) Depth-wise separable convolutional vision-transformer Transfer learning Maximum mean discrepancy Semi supervised learning

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A novel transformer-embedded lithium-ion battery model for joint estimation of state-of-charge and state-of-health

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Rare Metals 2024年第11期43卷 5637-5651页

作者： Shang-Yu Zhao kai ou Xing-Xing Gu Zhi-Min Dan Jiu-Jun Zhang Ya-Xiong Wang School of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108China Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China Contemporary Amperex Technology Co Limited(CATL)Ningde 352100China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China

The state-of-charge(SOC)and state-of-health(SOH)of lithium-ion batteries affect their operating performance and *** coupled SOC and SOH are difficult to estimate adaptively in multi-temperatures and *** paper proposes a novel transformer-embedded lithium-ion battery model for joint estimation of state-ofcharge and *** battery model is formulated across temperatures and aging,which provides accurate feedback for unscented Kalman filter-based SOC estimation and aging *** open-circuit voltages(OCVs)are corrected globally by the temporal convolutional network with accurate OCVs in time-sliding *** equation is combined with estimated SOH for temperature-aging migration.A novel transformer model is introduced,which integrates multiscale attention with the transformer's encoder to incorporate SOC-voltage differential derived from battery *** model simultaneously extracts local aging information from various sequences and aging channels using a self-attention and depth-separate *** leveraging multi-head attention,the model establishes information dependency relationships across different aging levels,enabling rapid and precise SOH ***,the root mean square error for SOC and SOH under conditions of 15℃dynamic stress test and 25℃constant current cycling was less than 0.9%and 0.8%,***,the proposed method exhibits excellent adaptability to varying temperature and aging conditions,accurately estimating SOC and SOH.

关键词： State-of-charge(SOC) State-of-health(SOH) Global correction Temperature Aging migration Transformer Multiscale attention

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贵广二回直流输电系统动态性能研究

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中国电机工程学报 2007年第Z1期27卷 17-20页

作者：欧开健南方电网技术研究中心广东省广州市510623

为验证和提高贵广二回直流输电系统动态性能,在PSCAD/EMTDC程序上建立与实际直流控制系统一一对应的基于单个SIMADYN D模件的详细直流仿真模型和南方电网2008年丰大运行方式仿真模型.研究分析了贵广二回直流输电系统在直流系统各种指令... 详细信息

为验证和提高贵广二回直流输电系统动态性能,在PSCAD/EMTDC程序上建立与实际直流控制系统一一对应的基于单个SIMADYN D模件的详细直流仿真模型和南方电网2008年丰大运行方式仿真模型.研究分析了贵广二回直流输电系统在直流系统各种指令或故障下的动态性能,结果表明,该文所涉及的研究项目中,贵广二回直流系统所采用的控制策略和控制参数具有良好的控制特性,满足工程要求.

关键词：贵广二回直流输电系统动态性能电力网

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All-dielectric metasurface for fully resolving arbitrary beams on a higher-order Poincaré sphere

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Photonics Research 2021年第3期9卷 331-343页

作者： Hui Yang Zhenwei Xie Guanhai Li kai ou Feilong Yu Hairong He Hong Wang Xiaocong Yuan Nanophotonics Research Center Shenzhen Key Laboratory of Microscale Optical Information TechnologyInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore National Laboratory for Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

Characterizing the amplitude, phase profile, and polarization of optical beams is critical in modern optics. With a series of cascaded optical components, one can accurately resolve the optical singularity and polarization state in traditional polarimetry systems. However, complicated optical setups and bulky configurations inevitably hinder future applications for integration. Here, we demonstrate a metadevice that fully resolves arbitrary beams on a higher-order Poincaré sphere(HOPS) via a single-layer all-silicon metasurface. The device is compact and capable of detecting optical singularities and higher-order Stokes parameters simultaneously through a single intensity measurement. To verify the validity of the proposed metadevice, different beams on HOPS0,0 and HOPS1,-1 are illuminated on the metadevices. The beams are fully resolved, and the reconstructed higher-order Stokes parameters show good agreement with the original ones. Taking the signal-to-noise ratio into account, the numerical simulations indicate that the design strategy can be extended to fully resolve arbitrary beams on HOPS with order up to 4. Because of the advantages of compact configuration and compatibility with current semiconductor technology, the metadevice will facilitate potential applications in information processing and optical communications.

关键词： Poincaré arbitrary singularity

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浅谈韩城矿区采煤沉陷区新梅苑居住小区建筑设计

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煤炭工程 2006年第12期38卷 30-31页

作者：欧凯中煤国际工程集团北京华宇工程有限公司北京100011

采煤沉陷区综合治理住宅小区设计是建设新型煤炭矿区的重要组成部分。文章介绍了韩城矿区采煤沉陷区新梅苑居住小区建筑设计的建设规模、设计构思及建筑规划设计,希望对其它矿区采煤沉陷区综合治理住宅小区的设计提供参考。

关键词：采煤沉陷区住宅小区建筑设计

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乳清分离蛋白酶解制备抗氧化和ACE抑制活性产物

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食品工业科技 2020年第16期41卷 169-175页

作者：欧凯王开祥杭州娃哈哈科技有限公司浙江省食品生物工程重点实验室浙江杭州310018

以乳清分离蛋白为原料,通过对肽浓度、游离氨基酸含量及水解度的研究,探讨了碱性蛋白酶Alkaline、中性蛋白酶NPU、肽酶AX和风味蛋白酶Flavourzyme对乳清蛋白酶解的影响。在优化碱性蛋白酶Alkaline水解条件的基础上,考察了中性蛋白酶NPU... 详细信息

以乳清分离蛋白为原料,通过对肽浓度、游离氨基酸含量及水解度的研究,探讨了碱性蛋白酶Alkaline、中性蛋白酶NPU、肽酶AX和风味蛋白酶Flavourzyme对乳清蛋白酶解的影响。在优化碱性蛋白酶Alkaline水解条件的基础上,考察了中性蛋白酶NPU、风味酶Flavourzyme添加时间,获得了复合酶分步酶解工艺:酶解温度55℃,加入1.5%Alkaline([E/S]),维持pH8.5酶解10 min,待pH7.2时加入1%NPU([E/S]),酶解240 min,加入1%Flavourzyme([E/S])继续酶解20 min。在此条件下,肽浓度达到60 g/L以上,游离氨基酸含量为4348 mg/kg。获得的酶解产物基本无苦味。酶解物分子量主要分布在<1 kDa(69.62%)。酶解产物具有ABTS自由基清除和ACE抑制活性,IC50值分别为1.02(0.377μmol Trolox当量/mg)和1.38 mg/mL。综上,采用复合酶酶解乳清分离蛋白可获得具有抗氧化活性和ACE抑制活性产物,为乳清酶解物在功能食品或保健品领域的运用提供科学参考。

关键词：乳清分离蛋白复合酶酶解抗氧化 ACE抑制活性分子量分布游离氨基酸

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胃癌免疫治疗机制及临床应用的研究进展

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中国肿瘤 2020年第2期29卷 125-133页

作者：欧凯杨林国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院北京100021

胃癌是发病率最高的癌症之一。现有的放化疗及手术治疗方法对于晚期胃癌患者的效果欠佳。免疫疗法方兴未艾,有望成为治疗晚期胃癌的有效方法。胃癌患者常处于免疫抑制状态,且分子类型多样。目前免疫疗法临床前和临床试验主要包括免疫检... 详细信息

胃癌是发病率最高的癌症之一。现有的放化疗及手术治疗方法对于晚期胃癌患者的效果欠佳。免疫疗法方兴未艾,有望成为治疗晚期胃癌的有效方法。胃癌患者常处于免疫抑制状态,且分子类型多样。目前免疫疗法临床前和临床试验主要包括免疫检查点抑制剂、过继性细胞免疫疗法和癌症疫苗。提高已有免疫疗法的安全性和有效性,根据胃癌患者的个体特征匹配合适的免疫疗法,寻找新的免疫疗法可能是未来免疫疗法的主要发展方向。

关键词：胃肿瘤免疫治疗免疫检查点过继免疫疗法癌症疫苗

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高压直流线路电压异常波动对分接开关控制的影响

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电力系统保护与控制 2009年第22期37卷 152-155,159页

作者：朱韬析欧开健南方电网超高压输电公司广州局广东广州510405 南方电网技术研究中心广东广州510623

高压直流线路电压波动异常是目前困扰天广、高肇及兴安直流输电系统的主要疑难问题之一,主要由逆变侧高压直流线路电压测量异常引起,而至今其根本原因仍不十分明朗。根据分接开关控制原理及实例,探讨了当逆变侧电压测量发生异常时,不仅... 详细信息

高压直流线路电压波动异常是目前困扰天广、高肇及兴安直流输电系统的主要疑难问题之一,主要由逆变侧高压直流线路电压测量异常引起,而至今其根本原因仍不十分明朗。根据分接开关控制原理及实例,探讨了当逆变侧电压测量发生异常时,不仅可能直接影响到本侧分接开关的调整,还可能影响对侧的分接开关调整,并将带来分接开关频繁调节、换流变阀侧电压偏低、传输功率偏低等一系列问题,甚至可能导致低负荷情况下相应极闭锁。这些分析对提高直流输电运行维护水平、在当前状况下确保直流输电系统的稳定运行有一定的帮助。

关键词：直流输电电压波动分接开关控制

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