检索结果-南通市图书馆

World Journal of Hepatology 2024年第4期16卷 537-549页

作者： Jing-Jing li Jia-Xi Mao Han-Xiang Zhong Yuan-Yu Zhao Fei Teng Xin-Yi Lu li-ye zhu Yang Gao Hong Fu Wen-Yuan Guo Department of liver Surgery and Organ Transplantation Shanghai Changzheng HospitalNaval Medical UniversityShanghai 200003China

The tumor microenvironment is a complex network of cells,extracellular matrix,and signaling molecules that plays a critical role in tumor progression and *** and blood vessels are major routes for solid tumor metastasis and essential parts of tumor drainage ***,recent studies have shown that lymphatic endothelial cells(LECs)and blood endothelial cells(BECs)also play multifaceted roles in the tumor microenvironment beyond their structural functions,particularly in hepatocellular carcinoma(HCC).This comprehensive review summarizes the diverse roles played by LECs and BECs in HCC,including their involvement in angiogenesis,immune modulation,lymphangiogenesis,and *** providing a detailed account of the complex interplay between LECs,BECs,and tumor cells,this review aims to shed light on future research directions regarding the immune regulatory function of LECs and potential therapeutic targets for HCC.

关键词： Lymphatic endothelial cells Blood endothelial cells Hepatocellular carcinoma Tumor microenvironment

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

多端口并行通信下多维度数据高速采集仿真

计算机仿真 2024年第6期41卷 520-524页

作者：林树青叶丽珠广州商学院信息技术与工程学院广东广州511363 马来西亚管理与科学大学马来西亚雪兰州莎阿南市40100

在多端口并行采样过程中,不同输入通道之间存在失配造成的误差,导致数据采集不准确,且存在大量的冗余数据,增加了数据传输的负担。为了提高数据采集效率,提出一种超多端口通信中多维数据的高速采集方法。明确多维数据的采集理想值,分析... 详细信息

在多端口并行采样过程中,不同输入通道之间存在失配造成的误差,导致数据采集不准确,且存在大量的冗余数据,增加了数据传输的负担。为了提高数据采集效率,提出一种超多端口通信中多维数据的高速采集方法。明确多维数据的采集理想值,分析多端口通信信噪比环境,选择通用接口保证通信兼容,稳定的模数转换器性能。为减少多端口并行采样的失配误差,利用时间交替并行采集策略,通过调试端口通信各类误差,降低通道信噪比。实时判断数据采集所需时间,重构数据采集误差函数,根据采集间距和模糊规则,调整有效距离,判断并删除冗余数据,实现多维度数据的高速采集。经实验证明研究方法能在保证数据完整性和精确度的前提下,实现高速采集,采集过程中受噪声影响小。

关键词：多端口通信多维度数据数据采集高速采集模糊规则

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

基于大数据的激光通信光纤时延波动测量仿真

计算机仿真 2024年第4期41卷 255-259页

作者：叶丽珠邓铭毅郑冬花广州商学院信息技术与工程学院广东广州511363 广东工业大学广东广州511300

空间激光通信光纤的传输频带宽、距离远且通信容量大,但是易受环境温度和激光器波长影响出现时延波动问题。为解决以上问题,提出基于大数据的空间激光通信光纤时延波动测量方法。构建光载波传输模型,分析光纤时延波动的影响因素。采用... 详细信息

空间激光通信光纤的传输频带宽、距离远且通信容量大,但是易受环境温度和激光器波长影响出现时延波动问题。为解决以上问题,提出基于大数据的空间激光通信光纤时延波动测量方法。构建光载波传输模型,分析光纤时延波动的影响因素。采用大数据技术测量时延波动,获得其初始测量值,通过卡尔曼滤波方法处理并提高测量值的精度,完成空间激光通信光纤时延波动的精准测量。实验结果表明,空间激光通信光纤距离不断增加时,时延波动量不断增大,研究方法测量结果与实际值具有较高拟合度,且对时延波动的跟踪精度高,不确定度保持在10ps以内。

关键词：大数据技术空间激光通信光纤时延光载波传输模型卡尔曼滤波方法

在线全文

学校读者我要写书评

暂无评论

卡尔曼滤波下激光雷达扫描大数据检测算法

计算机仿真 2024年第6期41卷 15-18,166页

作者：郑冬花邓铭毅叶丽珠广州商学院信息技术与工程学院广东广州511363 广东工业大学广东广州511300

激光雷达扫描的不规则激光回波信号通过地面反射和空间传播,但是由于颜色较暗的粗糙物体表面反射率较小,信号易发生漫反射,大量反射信号被接收,会形成较大的接收噪声,导致激光雷达扫描大数据出现较大程度的异常。为此提出基于卡尔曼滤... 详细信息

激光雷达扫描的不规则激光回波信号通过地面反射和空间传播,但是由于颜色较暗的粗糙物体表面反射率较小,信号易发生漫反射,大量反射信号被接收,会形成较大的接收噪声,导致激光雷达扫描大数据出现较大程度的异常。为此提出基于卡尔曼滤波的激光雷达扫描大数据检测算法。利用卡尔曼滤波算法剔除激光雷达数据中的野值;基于此,建立数据硬性约束条件,获取数据流形规则,提取激光雷达数据特征;根据提取的特征,利用支持向量回归算法完成数据分类,实现激光雷达扫描大数据检测。实验结果表明,研究方法检测激光雷达扫描大数据时,查全率始终高于90%,查准率高于95%,平均耗时65.1ms,且以无人小车行驶轨迹的雷达数据为测试对象时,研究方法具有较高的检测精度,说明该方法的研究价值较高,应用效果更好。

关键词：卡尔曼滤波激光雷达大数据检测数据野值特征提取支持向量回归算法

在线全文

学校读者我要写书评

暂无评论

基于强化学习的图像不确定性目标域提取仿真

计算机仿真 2024年第3期41卷 145-148,378页

作者：代丽娜裴冬菊郑冬花叶丽珠广州商学院信息技术与工程学院广东广州511363 江西农业大学计算机与信息工程学院江西南昌330045

相比于输入图像的整体像素点,不确定性目标所占像素点偏少,且由于物体朝向不同,对应特征也不同,导致图像不确定性目标提取的难度较大。提出一种新的基于强化学习的图像不确定性目标域提取方法。将图像输入加权双边滤波器中,将其分为高... 详细信息

相比于输入图像的整体像素点,不确定性目标所占像素点偏少,且由于物体朝向不同,对应特征也不同,导致图像不确定性目标提取的难度较大。提出一种新的基于强化学习的图像不确定性目标域提取方法。将图像输入加权双边滤波器中,将其分为高频区域和低频区域,在Curvelet变换的基础上保留图像细节信息。消除图像噪声,并采用限邻域EMD方法增强图像质量。建立自适应性模型,将预处理后的图像输入至上述模型中,通过混沌同步方法在分数阶非线性网络中提取图像像素点特征,以此实现图像分割。应用强化学习建立图像不确定性目标域提取的马尔科夫决策,获取图像的类别信息和区域结构,图像不确定性目标域的提取。仿真结果表明,研究方法能够精准提取图像像素点特征,查全率和查准率高于90%,J指数以及F检验值的平均值可达0.8以上。

关键词：强化学习加权双边滤波器混沌同步方法马尔科夫决策过程

Effect of yttrium and manganese addition on catalytic soot combustion activity and anti-high-temperature stability of CeO_(2) catalyst

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第2期42卷 334-344,I0004页

作者： Yi zhu Xingyu liu Wei Shi Jia li Changbing ye Ruimei Fang Huifeng zhu Shanhu Chen li Lan College of Chemistry Biology and Environment Yuxi Normal UniversityYuxi 653100China Institute of Biology and Environmental Engineering Yuxi Normal UniversityYuxi 653100China College of Environment and Resources Chongqing Technology and Business UniversityChongqing 400067China College of Chemistry and Chemical Engineering Jiangxi Science and Technology Normal UniversityNanchang 330013China College of Materials and Mechatronics Jiangxi Science and Technology Normal UniversityNanchang 330013China

In order to analyze the influence of the addition of yttrium and manganese on the soot combustion performance and high temperature stability of CeO_(2) catalyst,a series of Y/Mn-modified CeO_(2) catalysts were *** effects of structural properties,textural properties,oxygen vacancies,Ce^(3+),surface adsorbed oxygen species,reduction properties and desorption properties of oxygen species on the activity were analyzed by various characterization *** results of the activity test show that the addition of manganese is beneficial to enhancement of the activity,while the addition of yttrium increases the amount of reactive oxygen species,but decreases the *** aging at 700℃,the activity of the CeMn catalyst decreases most sharply,while the catalytic activity of the CeY catalyst can be maintained to a certain ***,the addition of yttrium and manganese at the same time can stabilize the *** fundamental reason is that yttrium and manganese move to the surface of the solid solution after aging,which increases the reduction performance of the catalyst,thus contributing to the increase of *** the activity of CeYMn catalyst decreases after aging at 800℃,it is still higher than that of other catalysts aged at 700℃.

关键词： CeO_(2)catalyst Soot catalytic combustion Diesel pollution control Rare earths High temperature stability Low temperature reduction performance

A Non-Parametric Scheme for Identifying Data Characteristic Based on Curve Similarity Matching

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1424-1437页

作者： Quanbo Ge Yang Cheng Hong li Ziyi ye Yi zhu Gang Yao School of Automation Nanjing University of Information Science&TechnologyJiangsu Provincial University Key Laboratory of Big Data Analysis and Intelligent SystemsNanjing University of Information Science&Technologyand the Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)Nanjing University of Information Science&TechnologyNanjing 210044China School of Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China China Classification Society Nantong Office Nantong 226006China Chinese Flight Test Establishment Xi’an 710089China School of Mathematics Tsinghua UniversityBeijing 100084China School of Automation Nanjing University of Information Science&TechnologyNanjing 210044China Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China IEEE

For accurately identifying the distribution charac-teristic of Gaussian-like noises in unmanned aerial vehicle(UAV)state estimation,this paper proposes a non-parametric scheme based on curve similarity *** the framework of the pro-posed scheme,a Parzen window(kernel density estimation,KDE)method on sliding window technology is applied for roughly esti-mating the sample probability density,a precise data probability density function(PDF)model is constructed with the least square method on K-fold cross validation,and the testing result based on evaluation method is obtained based on some data characteristic analyses of curve shape,abruptness and *** com-parison simulations with classical methods and UAV flight exper-iment shows that the proposed scheme has higher recognition accuracy than classical methods for some kinds of Gaussian-like data,which provides better reference for the design of Kalman filter(KF)in complex water environment.

关键词： Curve similarity matching Gaussian-like noise non-parametric scheme parzen window.

Polyethylene interfacial dielectric layer for organic semiconductor single crystal based field-effect transistors

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第4期35卷 431-435页

作者： Min Chen Boyu Peng Xuyun Guo ye zhu Hanying li Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationInternational Research Center for X PolymersShanxi-Zheda Institute of Advanced Materials and Chemical EngineeringZhejiang UniversityHangzhou 310027China Department of Applied Physics Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHong Kong 999077China

Organic semiconductor single crystals(OSSCs) have shown their promising potential in high-performance organic field-effect transistors(OFETs). The interfacial dielectric layers are critical in these OFETs as they not only govern the key semiconductor/dielectric interface quality but also determine the growth of OSSCs by their wetting properties. However, reported interfacial dielectric layers either need rigorous preparation processes, rely on certain surface chemistry reactions, or exhibit poor solvent resistance, which limits their applications in low-cost, large-area, monolithic fabrication of OSSC-based OFETs. In this work, polyethylene(PE) thin films and lamellar single crystals are utilized as the interfacial dielectric layers, providing solvent resistive but wettable surfaces that facilitate the crystallization of 6,13-bis(tri-isopropylsilylethynyl)pentacene(TIPS-PEN) and 6,13-bis(triisopropylsilylethynyl)-5,7,12,14-tetraazapentacene(TIPS-TAP). As evidenced by the presence of ambipolar behavior in TIPS-PEN single crystals and the high electron mobility(2.3 ± 0.34 cm^(2)V^(-1)s^(-1)) in TIPS-TAP single crystals, a general improvement on electron transport with PE interfacial dielectric layers is revealed, which likely associates with the chemically inertness of the saturated C-H bonds. With the advantages in both processing and device operation, the PE interfacial dielectric layer potentially offers a monolithic way for the enhancement of electron transport in solution-processed OSSC-based OFETs.

关键词： Polyethylene Interfacial dielectric layer Organic semiconductor Single crystal Organic field-effect transistors

Automation and Orchestration of Zero Trust Architecture:Potential Solutions and Challenges

在线全文

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第2期21卷 294-317页

作者： Yang Cao Shiva Raj Pokhrel ye zhu Robin Doss Gang li Centre for Cyber Resilience and Trust Deakin UniversityBurwood 3125Australia School of Information Technology Deakin UniversityGeelong 3216Australia

Zero trust architecture(ZTA)is a paradigm shift in how we protect data,stay connected and access *** is non-perimeter-based defence,which has been emerging as a promising revolution in the cyber security *** can be used to continuously maintain security by safeguarding against attacks both from inside and outside of the network ***,ZTA automation and orchestration,towards seamless deployment on real-world networks,has been limited to be reviewed in the existing *** this paper,we first identify the bottlenecks,discuss the background of ZTA and compare it with traditional perimeter-based security *** importantly,we provide an in-depth analysis of state-of-the-art AI techniques that have the potential in the automation and orchestration of ***,in this review paper,we develop a foundational view on the challenges and potential enablers for the automation and orchestration of ZTA.

关键词： Zero trust architecture cyber security artificial intelligence access control authentication

Piezoelectric materials for pollutants degradation: State-of-the-art accomplishments and prospects

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第4期35卷 61-72页

作者： Yuqing zhu Haohao Chen li Wang liqun ye Houle Zhou Qintian Peng Huaiyong zhu Yingping Huang College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China College of Hydraulic&Environmental Engineering China Three Gorges UniversityYichang 443002China School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4001Australia

Piezoelectric catalysis, a new catalytic method, is widely used in the field of environmental sanitation, including waste water treatment and dye degradation. However, in the face of the growing environmental pollution problem, the efficiency of piezoelectric catalysis is still hampered by the stress variation in the natural environment. Therefore, it is particularly important to improve the catalytic efficiency of piezoelectric materials. We divide piezoelectric materials into two categories: inorganic piezoelectric materials and organic piezoelectric materials. Then the mainstream inorganic piezoelectric materials are divided into four subcategories, namely:(1) MTiO_(3)(M = Ba, Sr),(2) bi-class catalytic materials,(3) MoX_(2)(X = S,Se), and(4) ZnO piezoelectric materials. The mainstream organic piezoelectric materials are divided into PVDF and g-C_(3)N_(4)materials. At the same time, the above materials are summarized to explain the excellent performance of materials from the perspective of structure and piezoelectric principle. In addition,we summarized the modification methods that can be applied to piezoelectric materials:(1) Morphology methods,(2) composites with heterojunctions, and(3) surface modification. Finally, we summarized the prospects of piezoelectric materials in the field of environment and water treatment.

关键词： Ultrasound Cavitation Piezoelectric materials Degradation Organic pollutants