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Science China(Information Sciences) 2025年

作者： Di zhao Rui DING Bin SONG State Key Laboratory of Integrated Services Networks Xidian University Hangzhou Institute of Technology Xidian University China Satellite Network Group Co. Ltd.

Future 6G networks will integrate non-terrestrial communication with mobile edge computing to enable wide-area edge intelligence, providing ubiquitous communication and computation services for everyone and everything. In this paper, we introduce the intelligent cloud-edge-device architecture into low Earth orbit (LEO) satellite-supported remote Internet of Things(IoT) networks to facilitate latency-sensitive and compute-intensive IoT applications. However, the dynamic spatio-temporal characteristics inherent in LEO satellite networks, such as the high volatility of task traffic and the high mobility of space nodes, pose severe challenges. For efficient task execution, we investigate the joint optimization of cross-region task offloading and cross-domain resource allocation, and innovatively propose a spatio-temporal attention-based proximal policy optimization(STA-PPO) algorithm. Specifically, the temporal attention-based actor network analyzes the timing dependencies of task arrival and makes time-variant decisions. Simultaneously, the spatial attention-based critic network captures the spatial variations of satellite motion and evaluates the topology-related value. We verify the effectiveness of the cloud-edge-device collaboration through extensive simulations. Numerical results demonstrate that the STA-PPO algorithm outperforms benchmarks, showing the lowest system delay and the highest link throughput.

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A Cross Attention Transformer-Mixed Feedback Video Recommendation Algorithm Based on DIEN

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Computers, Materials & Continua 2025年第1期82卷 977-996页

作者： Jianwei Zhang Zhishang zhao Zengyu Cai Yuan Feng Liang Zhu Yahui Sun College of Software Engineering Zhengzhou University of Light IndustryZhengzhou450000China Faculty of Information Engineering Xuchang Vocational Technical CollegeXuchang461000China College of Computer Science and Technology Zhengzhou University of Light IndustryZhengzhou450000China College of Electronics and Information Zhengzhou University of Light IndustryZhengzhou450000China

The rapid development of short video platforms poses new challenges for traditional recommendation *** systems typically depend on two types of user behavior feedback to construct user interest profiles:explicit feedback(interactive behavior),which significantly influences users’short-term interests,and implicit feedback(viewing time),which substantially affects their long-term ***,the previous model fails to distinguish between these two feedback methods,leading it to predict only the overall preferences of users based on extensive historical behavior ***,it cannot differentiate between users’long-term and shortterm interests,resulting in low accuracy in describing users’interest states and predicting the evolution of their *** paper introduces a video recommendationmodel calledCAT-MFRec(CrossAttention Transformer-Mixed Feedback Recommendation)designed to differentiate between explicit and implicit user feedback within the DIEN(Deep Interest Evolution Network)*** study emphasizes the separate learning of the two types of behavioral feedback,effectively integrating them through the cross-attention ***,it leverages the long sequence dependence capabilities of Transformer technology to accurately construct user interest profiles and predict the evolution of user *** results indicate that CAT-MF Rec significantly outperforms existing recommendation methods across various performance *** advancement offers new theoretical and practical insights for the development of video recommendations,particularly in addressing complex and dynamic user behavior patterns.

关键词： Video recommendation user interest cross-attention transformer

Limits of One-dimensional Interacting Particle Systems with Two-scale Interaction

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Chinese Annals of Mathematics,Series B 2022年第2期43卷 195-208页

作者： tong zhao School of Mathematical Sciences Fudan UniversityShanghai 200433China

This paper characterizes the limits of a large system of interacting particles distributed on the real *** interaction occurring among neighbors involves two kinds of independent actions with different *** system is a generalization of the voter process,of which each particle is of type A or *** suitable scaling,the local proportion functions of A particles converge to continuous functions which solve a class of stochastic partial differential equations driven by Fisher-Wright white *** obtain the convergence,the tightness of these functions is derived from the moment estimate method.

关键词： Interacting particle systems Stochastic partial differential equations Two-scale interaction Tightness

Lipid droplets in the nervous system:involvement in cell metabolic homeostasis

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Neural Regeneration Research 2025年第3期20卷 740-750页

作者： Yuchen Zhang Yiqing Chen Cheng Zhuang Jingxuan Qi Robert Chunhua zhao Jiao Wang School of Life Sciences Shanghai UniversityShanghaiChina School of Medicine Shanghai UniversityShanghaiChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic MedicinePeking Union Medical CollegeBeijingChina Center of Excellence in Tissue Engineering Chinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Drug Development and Clinical Trial of Stem Cell Therapy BeijingChina

Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous *** droplet formation begins with the synthesis of neutral lipids in the endoplasmic ***,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous *** addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress ***,lipid droplets exhibit specific functions in neurons and glial *** of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system *** review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and ***,it will explore the association between lipid droplets and neurodegenerative *** the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.

关键词： Alzheimer's disease lipid droplet biogenesis lipid droplets lipid metabolism nervous system neurodegenerative disorders oxidative stress Parkinson's disease

可弯曲电子内科胸腔镜在恶性胸腔积液诊断中的应用

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中国实用内科杂志 2008年第2期28卷 107-109页

作者：王臻童朝辉李红杰赵婷婷李绪言徐莉莉王晓娟张隽罗静金木兰王辰首都医科大学附属北京朝阳医院北京呼吸疾病研究所北京100020

目的探讨可弯曲电子内科胸腔镜在恶性胸腔积液诊断中的应用时机和指征。方法2005年7月至2007年7月,对首都医科大学附属北京朝阳医院应用尖端可弯曲电子内科胸腔镜(LTF-240型)检查并确诊的37例恶性胸腔积液患者临床资料进行回顾性分析,... 详细信息

目的探讨可弯曲电子内科胸腔镜在恶性胸腔积液诊断中的应用时机和指征。方法2005年7月至2007年7月,对首都医科大学附属北京朝阳医院应用尖端可弯曲电子内科胸腔镜(LTF-240型)检查并确诊的37例恶性胸腔积液患者临床资料进行回顾性分析,所有患者经胸腔积液细胞学、痰细胞学、支气管镜检查等仍不能确诊胸腔积液性质,临床上高度疑诊恶性胸腔积液者,行内科胸腔镜治疗。结果37例患者最终诊断:肺癌20例,其中肺鳞癌5例(其中1例经手术证实,而胸腔镜检查为阴性),肺腺癌12例,肺腺鳞癌1例,小细胞癌2例;胸膜转移癌14例,其中乳腺癌转移4例,卵巢癌转移1例,肾透明细胞癌并胸膜转移1例,恶性胸腺瘤转移1例,其他部位转移癌7例;恶性胸膜间皮瘤2例;非霍奇金淋巴瘤1例。主要并发症为术后伤口疼痛(21例),对症治疗可缓解,无肺水肿、感染、出血等并发症。结论可弯曲电子内科胸腔镜检查是一项安全、有效、易操作的检查方法,对有肿瘤病史、大量胸腔积液、胸部CT提示肿块影或胸膜病变者可早期积极进行内科胸腔镜检查。

关键词：胸腔镜可弯曲活检胸腔积液诊断

Direct seawater splitting for hydrogen production:Recent advances in materials synthesis and technological innovation

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Green Energy & Environment 2025年第1期10卷 11-33页

作者： Yilin zhao Zhipeng Yu Aimin Ge Lujia Liu Joaquim Luis Faria Guiyin Xu Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai201620China International Iberian Nanotechnology Laboratory(INL) Avenida Mestre Jose VeigaBraga4715-330Portugal The MacDiarmid Institute for Advanced Materials and Nanotechnology School of Chemical and Physical SciencesVictoria University of WellingtonWellington6012New Zealand LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials Faculty of EngineeringUniversity of PortoRua Dr.Roberto Frias s/nPorto4200-465Portugal ALiCE-Associate Laboratory in Chemical Engineering Faculty of EngineeringUniversity of PortoRua Dr.Roberto Frias s/nPorto4200-465Portugal

Direct seawater splitting has emerged as a popular and promising research direction for synthesising clean,green,non-polluting,and sustainable hydrogen energy without depending on high-purity water in the face of the world’s shortage of fossil ***,efficient seawater splitting is hindered by slow kinetics caused by the ultra-low conductivity and the presence of bacteria,microorganisms,and stray ions in ***,producing hydrogen on an industrial scale is challenging due to the high production *** present review addresses these challenges from the catalyst point of view,namely,that designing catalysts with high catalytic activity and stability can directly affect the rate and effect of seawater *** the ion transfer perspective,designing membranes can block harmful ions,improving the stability of seawater *** the energy point of view,mixed seawater systems and self-powered systems also provide new and low-energy research systems for seawater ***,ideas and directions for further research on direct seawater splitting in the future are pointed out,with the aim of achieving low-cost and high-efficiency hydrogen production.

关键词： Seawater splitting Catalyst Membranes Mixed seawater systems Self-powered systems

Correlation between pre-treatment serum total blood bilirubin andunconjugated bilirubin and prognosis in patients with colorectalcancer

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World Journal of Gastrointestinal Surgery 2023年第11期15卷 2456-2462页

作者： hui tong Peng Xing zhao-Ning Ji Department of Medicine Oncology Anhui Jingxian HospitalXuancheng 242500Anhui ProvinceChina Department of Medicine Oncology The First Affiliated Hospital of Wannan Medical College-Yijishan HospitalWuhu 241000Anhui ProvinceChina

BACKGROUND Epidemiological studies have found that unconjugated bilirubin(UCB)levels are positively correlated with the incidence of colorectal cancer(CRC).Therefore,bilirubin may also play an important role in the prognosis of *** To investigate the predictive value of total bilirubin(TBIL)and UCB in the prognosis of patients with *** A total of 142 CRC patients were selected as the research subjects in Jingxian Hospital,from October 2014 to May *** and tumour-related clinical data at admission and the overall survival at 3 years after surgery were *** optimal cut-off values of TBIL and UCB were determined by receiver operating characteristic curve *** and multivariate Cox regression were used to analyse the effect of bilirubin level on the survival of CRC *** Kaplan–Meier method was used to assess the survival *** The 3-year overall survival rate of CRC patients was significantly higher in the high TBIL(>13.45μmol/L)group than in the low TBIL(≤13.45μmol/L)group(76.4%vs 37.1%;P10.75μmol/L)group was significantly higher than that in the low UCB(≤10.75μmol/L)group(83.3%vs 34.2%;P<0.05).Multivariate Cox regression analysis showed that higher TBIL levels were an independent predictor of better prognosis in CRC patients(hazard ratio=0.360,95%confidence interval:0.159-0.812,P=0.014).CONCLUSION TBIL levels can be used as a prognostic indicator for CRC patients.

关键词： Bilirubin Colorectal neoplasms Prognosis

大型三甲医院SPD服务运营商绩效评价及提升研究

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物流工程与管理 2023年第5期45卷 112-115,156页

作者：霍刚孟莎胡欣雅童昭辉周克明中南大学湘雅医院湖南长沙410008 湖南工商大学湖南长沙410205 德荣医疗科技股份有限公司湖南长沙410007

为践行国家医改要求,满足医院精细化管理内在需求,推动公立医院高质量发展,近年来我国众多大型三甲医院开始引入SPD服务模式。文中以SPD服务模式的代表性运营商DR公司为例,运用AHP法与模糊综合评价法相结合的技术方法对DR公司的绩效评... 详细信息

为践行国家医改要求,满足医院精细化管理内在需求,推动公立医院高质量发展,近年来我国众多大型三甲医院开始引入SPD服务模式。文中以SPD服务模式的代表性运营商DR公司为例,运用AHP法与模糊综合评价法相结合的技术方法对DR公司的绩效评价及提升进行研究,期望为医院SPD服务模式及服务运营商管理提供重要参考借鉴。

关键词： SPD服务运营商绩效评价 AHP法模糊综合评价法

“Zero‑Strain” NiNb_(2)O_(6) Fibers for All‑Climate Lithium Storage

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Nano-Micro Letters 2025年第1期17卷 348-360页

作者： Yan zhao Qiang Yuan Liting Yang Guisheng Liang Yifeng Cheng Limin Wu Chunfu Lin Renchao Che College of Physics Donghua UniversityShanghai 201620People’s Republic of China School of Materials Science and Engineering Institute of Materials for Energy and EnvironmentQingdao UniversityQingdao 266071People’s Republic of China Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Niobates are promising all-climate Li^(+)-storage anode material due to their fast charge transport,large specific capacities,and resistance to electrolyte ***,their moderate unit-cellvolume expansion(generally 5%–10%)during Li^(+)storage causes unsatisfactory long-term ***,“zero-strain”NiNb_(2)O_(6) fibers are explored as a new anode material with comprehensively good electrochemical *** Li^(+)storage,the expansion of electrochemical inactive NiO_(6) octahedra almost fully offsets the shrinkage of active NbO_(6) octahedra through reversible O *** superior volume-accommodation capability of the NiO_(6) layers guarantees the“zero-strain”behavior of NiNb_(2)O_(6) in a broad temperature range(0.53%//0.51%//0.74%at 25//−10//60℃),leading to the excellent cyclability of the NiNb_(2)O_(6) fibers(92.8%//99.2%//91.1%capacity retention after 1000//2000//1000 cycles at 10C and 25//−10//60℃).This NiNb_(2)O_(6) material further exhibits a large reversible capacity(300//184//318 mAh g−1 at 0.1C and 25//−10//60℃)and outstanding rate performance(10 to 0.5C capacity percentage of 64.3%//50.0%//65.4%at 25//−10//60℃).Therefore,the NiNb_(2)O_(6) fibers are especially suitable for large-capacity,fast-charging,long-life,and all-climate lithium-ion batteries.

关键词： NiNb_(2)O_(6)porous fiber “Zero-strain”mechanism Electrochemical property Harsh-temperature operation Operando characterization

Constructing Donor–Acceptor‑Linked COFs Electrolytes to Regulate Electron Density and Accelerate the Li^(+)Migration in Quasi‑Solid‑State Battery

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Nano-Micro Letters 2025年第1期17卷 456-471页

作者： Genfu zhao Hang Ma Conghui Zhang Yongxin Yang Shuyuan Yu Haiye Zhu Yongjiang Sun Hong Guo School of Materials and Energy International Joint Research Center for Advanced Energy Materials of Yunnan ProvinceYunnan UniversityKunming 650091People’s Republic of China Yunnan Yuntianhua Co. LtdR&D CenterKunming 650228People’s Republic of China Southwest United Graduate School Kunming 650091People’s Republic of China

Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal *** study reports a high-performance solid-state electrolyte thorough D–A-linked covalent organic frameworks(COFs)based on intramolecular charge transfer *** other reported COFbased solid-state electrolyte,the developed concept with D–A-linked COFs not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal *** introduced strong electronegativity F-based ligand in COF electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic conductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based *** is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)***,we anticipate that this work creates insight into the strategy for accelerating Li^(+)conduction in high-performance solid-state Li metal batteries through D–A system.

关键词： Electronic modulation engineering Donor-acceptor-linked covalent organic frameworks Quasi-solid-state Li metal battery