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14th EAI International Conference on Wireless and Satellite Systems, WiSATS 2024

作者： He, Jiayi Zhang, Yakai Liu, Zhiyong School of Information Science and Engineering of HIT Weihai264209 China Shandong Provincial Key Laboratory of Marine Electronic Information and Intelligent Unmanned Systems Weihai264209 China Key Laboratory of Cross Domain Synergy and Comprehensive Support for Unmanned Marine Systems of Ministry of Industry and Information Technology Weihai264209 China

ISBN: (纸本)9783031862021

In order to address the challenges of high propagation delays and limited service capabilities in maritime satellite communications, unmanned aerial vehicles have been proposed as an airborne backhaul solution to enhance communications between satellites and maritime base stations. The non-orthogonal multiple access (NOMA) framework can solve the user sparsity problem in maritime networks. In this paper, a deep reinforcement learning algorithm is used to solve the nonconvex power allocation problem under NOMA. In order to mitigate the risk of overestimation of Q values and local optimal convergence of Deep Q Network (DQN) algorithm, we propose an algorithm called Soft Agent Critical Ocean Satellite Communication Power Allocation (SAC-OSCPA) based on the idea of maximum entropy and compare it with the traditional DQN algorithm. The main goal of this research is to maximize network throughput in scenarios with randomly distributed users. Simulation results show that the average system throughput is improved by 13.18% with the SAC-OSCPA algorithm, and the average throughput of the worst performing user is significantly improved by 41.59%. These results demonstrate the efficacy of the proposed algorithm in optimizing the communication performance of maritime satellite networks. © ICST Institute for Computer sciences, Social Informatics and Telecommunications Engineering 2025.

关键词： Deep reinforcement learning

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Kolmogorov-Arnold Networks Based Signal Detection for OTFS Systems in LEO Satellite Communications 14th

Kolmogorov-Arnold Networks Based Signal Detection for OTFS ...

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14th EAI International Conference on Wireless and Satellite Systems, WiSATS 2024

作者： Zhang, Yakai He, Jiayi Liu, Zhiyong School of Information Science and Engineering of HIT Weihai264209 China Shandong Provincial Key Laboratory of Marine Electronic Information and Intelligent Unmanned Systems Weihai264209 China Key Laboratory of Cross-Domain Synergy and Comprehensive Support for Unmanned Marine Systems of Ministry of Industry and Information Technology Weihai264209 China

ISBN: (纸本)9783031861956

In numerous studies, orthogonal time-frequency space (OTFS) has been utilized in satellite-terrestrial communication systems with high mobility due to its strong adaptability to Doppler shifts and delays. Signal detection, a crucial technology influencing OTFS performance, is often hindered by high complexity or suboptimal detection capabilities. To address this, we propose a Kolmogorov-Arnold Networks (KANs)-based OTFS signal detection method for low Earth orbit satellite (LEO-Sat) communication systems. KANs employ learnable activation functions instead of traditional learnable linear weights between network nodes, enabling dynamic activation functions to enhance model accuracy. We integrate KANs, trained offline, into the LEO-Sat system to recover distorted signals at the receiver, facilitating effective signal detection. Compared to conventional detection algorithms, the proposed method demonstrates superior Bit Error Rate (BER) performance. Additionally, KANs are more parameter-efficient than DNNs, using significantly fewer parameters. © ICST Institute for Computer sciences, Social Informatics and Telecommunications Engineering 2025.

关键词： Bit error rate

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水幕冷却及红外遮蔽效应试验研究（英文）

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Journal of Marine science and Application 2025年第3期 567-579页

作者：袁能霖刘梅楠邹燚涛施红 School of Energy and Power Jiangsu University of Science and Technology Key Laboratory of Aircraft Environment Control and Life Support Nanjing University of Aeronautics & Astronautics School of Energy a nd Power Jiangsu University of Science and Technology

The water curtain spray system of the ship helps reduce surface thermal load and lowers thermal infrared radiation, notably enhancing the stealth and survivability of naval ships. The performance of the water curtain spray system is largely influenced by the density of the nozzles and their installation height. Therefore, a test platform was established to investigate these critical influencing factors, employing an orthogonal design methodology for the experimental study. Specifically, the study evaluated the effects of varying distances to the steel plate target and different injection heights on the cooling performance of the system. Results demonstrate that using one nozzle per 4 square meters of the ship's surface area effectively lowers the surface temperature, bringing it closer to the ambient background temperature. This nozzle configuration creates irregular infrared heat patterns, which complicate the task for infrared detectors to discern the ship's outline, thus enhancing its infrared stealth. Additionally, maintaining the nozzle installation height within 0.6 m to prevent the temperature difference between the steel plate and the background temperature from exceeding 4 K. Moreover, as the infrared imaging distance increases from 3 to 9 m, the temperature difference measured by the thermocouple and the infrared imager increases by 141.27%. Furthermore, with the increase in infrared imaging distance, the infrared temperature of the target steel plate approaches the background temperature, indicating improved detectability. These findings have significantly enhanced the stealth capabilities of naval ships, maximizing their immunity to infrared-guided weapon attacks. Moreover, their importance in improving the survivability of ships on the water surface cannot be underestimated.

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LuSeg: Efficient Negative and Positive Obstacles Segmentation via Contrast-Driven Multi-Modal Feature Fusion on the Lunar

arXiv

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arXiv 2025年

作者： Jiao, Shuaifeng Zeng, Zhiwen Su, Zhuoqun Chen, Xieyuanli Zhou, Zongtan Lu, Huimin College of Intelligence Science and Technology the National Key Laboratory of Equipment State Sensing and Smart Support National University of Defense Technology China

As lunar exploration missions grow increasingly complex, ensuring safe and autonomous rover-based surface exploration has become one of the key challenges in lunar exploration tasks. In this work, we have developed a lunar surface simulation system called the Lunar Exploration Simulator System (LESS) and the LunarSeg dataset, which provides RGB-D data for lunar obstacle segmentation that includes both positive and negative obstacles. Additionally, we propose a novel two-stage segmentation network called LuSeg. Through contrastive learning, it enforces semantic consistency between the RGB encoder from Stage I and the depth encoder from Stage II. Experimental results on our proposed LunarSeg dataset and additional public real-world NPO road obstacle dataset demonstrate that LuSeg achieves state-of-the-art segmentation performance for both positive and negative obstacles while maintaining a high inference speed of approximately 57 Hz. We have released the implementation of our LESS system, LunarSeg dataset, and the code of LuSeg at: https://***/nubot-nudt/LuSeg. © 2025, CC BY.

关键词： Lunar missions

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Low-input redoxomics facilitates global identification of metabolic regulators of oxidative stress in the gut

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Signal Transduction and Targeted Therapy 2025年第2期10卷 885-902页

作者： Xina Xiao Meng Hu Li Gao Huan Yuan Baochen Chong Yu Liu Rou Zhang Yanqiu Gong Dan Du Yong Zhang Hao Yang Xiaohui Liu Yan Zhang Huiyuan Zhang Heng Xu Yi Zhao Wenbo Meng Dan Xie Peng Lei Shiqian Qi Yong Peng Tao Tan Yang Yu Hongbo Hu Biao Dong Lunzhi Dai National Clinical Research Center for Geriatrics State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduChina Advanced Mass Spectrometry Center Research Core FacilityFrontiers Science Center for Disease-Related Molecular NetworkNHC Key Lab of Transplant Engineering and ImmunologyWest China HospitalSichuan UniversityChengduChina School of Life Sciences Tsinghua UniversityBeijingChina Department of Rheumatology and Immunology West China HospitalSichuan UniversityChengduChina The First School of Clinical Medicine Lanzhou UniversityLanzhouChina State Key Laboratory of Primate Biomedical Research Institute of Primate Translational MedicineKunming University of Science and TechnologyKunmingChina Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction Ministry of EducationCenter for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina Frontiers Medical Center Tianfu Jincheng LaboratoryChengduChina

Oxidative stress plays a crucial role in organ aging and related diseases, yet the endogenous regulators involved remain largelyunknown. This work highlights the importance of metabolic homeostasis in protecting against oxidative stress in the large *** developing a low-input and user-friendly pipeline for the simultaneous profiling of five distinct cysteine (Cys) states, includingfree SH, total Cys oxidation (Sto), sulfenic acid (SOH), S-nitrosylation (SNO), and S-glutathionylation (SSG), we shed light on Cysredox modification stoichiometries and signaling with regional resolution in the aging gut of monkeys. Notably, the proteinsmodified by SOH and SSG were associated primarily with cell adhesion. In contrast, SNO-modified proteins were involved inimmunity. Interestingly, we observed that the Sto levels ranged from 0.97% to 99.88%, exhibiting two distinct peaks and increasingwith age. Crosstalk analysis revealed numerous age-related metabolites potentially involved in modulating oxidative stress and Cysmodifications. Notably, we elucidated the role of fumarate in alleviating intestinal oxidative stress in a dextran sulfate sodium (DSS)-induced colitis mouse model. Our findings showed that fumarate treatment promotes the recovery of several cell types, signalingpathways, and genes involved in oxidative stress regulation. Calorie restriction (CR) is a known strategy for alleviating oxidativestress. Two-month CR intervention led to the recovery of many antioxidative metabolites and reshaped the Cys redoxome. Thiswork decodes the complexities of redoxomics during the gut aging of non-human primates and identifies key metabolic regulatorsof oxidative stress and redox signaling.

关键词： metabolic homeostasis total cys oxidation cysteine modifications sulfenic acid gut aging redoxomics oxidative stress

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Artificial cascade biocatalysis for the synthesis of 2-aminocyclohexanols with contiguous stereocenters

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Chinese Journal of Catalysis 2025年第1期68卷 345-355页

作者： Fei-Xiang Dong Tian Jin Xiaojuan Yu Hong-Yue Wang Qi Chen Jian-He Xu Gao-Wei Zheng State Key Laboratory of Bioreactor Engineering Shanghai Collaborative Innovation Center for BiomanufacturingEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei Key Laboratory of Industrial BiotechnologySchool of Life SciencesHubei UniversityWuhan 430062HubeiChina

Chiral cyclic amino alcohols with contiguous stereocenters are key building blocks in the synthesis of bioactive molecules and *** cascade biocatalysis represents an attractive method for the synthesis of chiral molecules bearing multiple stereocenters from readily available *** we reported an artificial cascade biocatalysis comprising an epoxide hydrolase,an alcohol dehydrogenase,and a reductive aminase or an amine *** can be utilized to access all four stereoisomers of 2-aminocyclohexanol with two contiguous stereocenters in high yields(up to 95%)and excellent stereoselectivity(up to 98%de)starting from readily available cyclohexene oxide without isolation of the ***,the biocatalytic cascade has been successfully extended to the production of structurally diverse 2-(alkylamino)cyclohexanols by replacing ammonia with different organic amines.

关键词： Biocatalysis Enzyme cascade Aminoalcohol Reductive aminase Amine dehydrogenase

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mRNA metabolism regulator human antigen R (HuR) regulates age-related hearing loss in aged mice

Nature Aging

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Nature Aging 2025年第5期5卷 848-867页

作者： Guo, Siwei Cao, Jieying Hong, Guodong Song, Yuning Xia, Ming Li, Peipei Yuan, Wei Xiao, Yu Sun, Guoqiang Liu, Shuang Cao, Shengda Qi, Jieyu Bi, Xiuli Liu, Ziyi Wu, Yunhao Li, Wen Zhao, Xiaoxu Gao, Jiangang Chai, Renjie Fu, Xiaolong School of Life Science Shandong University Qingdao China Shandong Provincial Hospital Medical Science and Technology Innovation Center School of Clinical and Basic Medical Sciences Shandong First Medical University and Shandong Academy of Medical Sciences Jinan China Chongqing General Hospital Chongqing China State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing China The Key Laboratory of Animal Resistant Biology of Shandong Province College of Life Science Shandong Normal University Jinan China Department of Otorhinolaryngology Qilu Hospital of Shandong University NHC Key Laboratory of Otorhinolaryngology Shandong University Jinan China Department of Neurology Aerospace Center Hospital School of Life Science Beijing Institute of Technology Beijing China State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck Surgery Zhongda Hospital School of Life Sciences and Technology School of Medicine Advanced Institute for Life and Health Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research Southeast University Nanjing China Co-Innovation Center of Neuroregeneration Nantong University Nantong China Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People’s Hospital University of Electronic Science and Technology of China Chengdu China Southeast University Shenzhen Research Institute Shenzhen China

Age-related hearing loss (ARHL) is among the most prevalent and complex disorders in older adults. However, the pathogenesis of ARHL remains poorly understood. Using a single-cell transcriptomic landscape of mouse cochlea at five time points (1, 2, 5, 12 and 15 months), we found that the levels of human antigen R (HuR)—a classical RNA-binding protein—increase with age. Here we show that HuR is specifically transported from the nucleus to the cytoplasm in hair cells in both aging mice and nonhuman primates. HuR overexpression in cochlea could successfully alleviate ARHL in aged mice. Meanwhile, HuR deficiency led to premature hearing dysfunction characterized by degeneration of stereocilia and the subsequent loss of hair cells. RNA immunoprecipitation sequencing analysis revealed that HuR can bind to messenger RNAs that enable stereocilia maintenance, including Gnai3. Adeno-associated virus-mediated Gnai3 overexpression partially rescues the hearing defects in HuR-deficient mice. Taken together, these findings indicate that HuR is a potential therapeutic target for ARHL. © The Author(s), under exclusive licence to Springer Nature America, Inc. 2025.

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提高分子结晶度和分子间相互作用以实现有机太阳能电池效率和稳定性的同步提升（英文）

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science China Materials 2025年第5期68卷 1391-1400页

作者：赵江通杨欣荣邵一鸣孙瑞闵杰 The Institute for Advanced Studies Wuhan University Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life SciencesSuzhou University of Science and Technology

通过分子设计精准控制体异质结(BHJ)形貌是开发高性能有机太阳能电池(OSCs)面临的长期挑战之一.本工作中,我们设计并合成了三种具有不同侧链(分别在苯并三唑单元上引入甲基、2-乙基己基和2-癸基十四烷基)的小分子受体(SMAs),即R-M、R-EH... 详细信息

通过分子设计精准控制体异质结(BHJ)形貌是开发高性能有机太阳能电池(OSCs)面临的长期挑战之一.本工作中,我们设计并合成了三种具有不同侧链(分别在苯并三唑单元上引入甲基、2-乙基己基和2-癸基十四烷基)的小分子受体(SMAs),即R-M、R-EH和R-DTD.这种侧链调控可以有效调节受体/受体(A/A)和给体/受体(D/A)分子之间的相互作用,从而实现BHJ活性层结构的微调.与R-M和R-DTD相比, R-EH与给体PM6表现出更强的A/A和D/A相互作用,形成更紧密的分子排列,改善了BHJ网络结构,增强了电荷传输和提取性能.因此,在三个体系中, PM6:R-EH不仅表现出超过18%的器件效率,还表现出优异的稳定性.本研究深化了A/A和D/A相互作用对BHJ形貌的协同调节作用,为实现高效且稳定的工业化OSCs提供了新的思路.

关键词： organic photovoltaics high performance side chain modification superior photostability intermolecular interaction

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BEVDiffLoc: End-to-End LiDAR Global Localization in BEV View based on Diffusion Model

arXiv

引用

arXiv 2025年

作者： Wang, Ziyue Shi, Chenghao Wang, Neng Yu, Qinghua Chen, Xieyuanli Lu, Huimin College of Intelligence Science and Technology The National Key Laboratory of Equipment State Sensing and Smart Support National University of Defense Technology China

Localization is one of the core parts of modern robotics. Classic localization methods typically follow the retrieve-then-register paradigm, achieving remarkable success. Recently, the emergence of end-to-end localization approaches has offered distinct advantages, including a streamlined system architecture and the elimination of the need to store extensive map data. Although these methods have demonstrated promising results, current end-to-end localization approaches still face limitations in robustness and accuracy. Bird’s-Eye-View (BEV) image is one of the most widely adopted data representations in autonomous driving. It significantly reduces data complexity while preserving spatial structure and scale consistency, making it an ideal representation for localization tasks. However, research on BEV-based end-to-end localization remains notably insufficient. To fill this gap, we propose BEVDiffLoc, a novel framework that formulates LiDAR localization as a conditional generation of poses. Leveraging the properties of BEV, we first introduce a specific data augmentation method to significantly enhance the diversity of input data. Then, the Maximum Feature Aggregation Module and Vision Transformer are employed to learn robust features while maintaining robustness against significant rotational view variations. Finally, we incorporate a diffusion model that iteratively refines the learned features to recover the absolute pose. Extensive experiments on the Oxford Radar RobotCar and NCLT datasets demonstrate that BEVDiffLoc outperforms the baseline methods. Our code is available at https://***/nubot-nudt/BEVDiffLoc. © 2025, CC BY.

关键词： Network security

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OsbZIP27 coordinates with OsHUB1 and OsHUB2 to modulate drought tolerance in rice

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Journal of Genetics and Genomics 2025年第2期52卷 168-178页

作者： Zuntao Xu Yachun Yang Fei Zhang Hao Li Hui Ma Wenge Wu Yong Ding Anhui Province Key Laboratory of Rice Genetics and Breeding Rice Research InstituteAnhui Academy of Agricultural SciencesHefeiAnhui 230031China Biological Breeding Laboratory of Anhui Province HefeiAnhui 230031China Ministry of Education Key Laboratory for Membraneless Organelles and Cellular Dynamics HefeiAnhui 230027China School of Life Sciences University of Science and Technology of ChinaHefeiAnhui 230027China The Grain Industry Research Institute of Anhui Agricultural University HefeiAnhui 230036China

Histone H2B ubiquitination(H2Bub)is positively linked to transcriptional activation,but the genetic programs affected by H2Bub to enhance drought tolerance remain largely ***,we show that OsbZIP27 interacts directly with OsHUB1/2 to regulate drought tolerance in rice by binding to the promoters of OsHAK1 and OsGLN1 to achieve H2Bub and transcriptional ***,mutations in OsbZIP27 reduce transcription of OsHAK1 and OsGLN1,resulting in increased sensitivity to drought ***,loss of OsHUB1 and OsHUB2 function causes hypersensitivity to drought stress,whereas OsHUB2 overexpression enhances drought ***,our results indicate that OsbZIP27 coordinates with OsHUB1/2 to enhance rice drought tolerance by increasing H2Bub and expression of OsHAK1 and OsGLN1.

关键词： H2B monoubiquitination Drought stress bZIP transcription factor Ring domain protein Potassium transporter Glucanase

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