期刊文献+
共找到162,416篇文章
< 1 2 250 >
每页显示 20 50 100
基于ASP.NET与深度学习的医学图像分割系统设计与实现
1
作者 陈少洁 陈荣征 《现代信息科技》 2026年第2期79-83,共5页
针对深度学习模型与传统Web信息系统集成中的工程难题,文章设计并实现了一个松耦合、高可用的医学图像分割信息管理系统。系统采用B/S架构,前端基于ASP.NET框架开发用户界面与业务逻辑,后端通过RESTful API调用独立部署的Mask R-CNN模... 针对深度学习模型与传统Web信息系统集成中的工程难题,文章设计并实现了一个松耦合、高可用的医学图像分割信息管理系统。系统采用B/S架构,前端基于ASP.NET框架开发用户界面与业务逻辑,后端通过RESTful API调用独立部署的Mask R-CNN模型服务,完成图像分割任务;采用SQL Server数据库进行数据管理,并设计了异步任务处理机制。成功构建了一个集用户管理、病人信息管理、图像上传及异步分割任务调度于一体的管理系统。测试验证了该系统架构在功能、性能及异构服务通信方面的有效性。该研究为解决深度学习模型在医疗信息系统中的工程化集成问题提供了可行方案,所设计的松耦合架构具有良好的实用性与扩展性。 展开更多
关键词 信息管理系统 系统集成 asp.net Mask R-CNN B/S架构
在线阅读 下载PDF
A Comprehensive Literature Review of AI-Driven Application Mapping and Scheduling Techniques for Network-on-Chip Systems
2
作者 Naveed Ahmad Muhammad Kaleem +5 位作者 Mourad Elloumi Muhammad Azhar Mushtaq Ahlem Fatnassi Mohd Fazil Anas Bilal Abdulbasit A.Darem 《Computer Modeling in Engineering & Sciences》 2026年第1期118-155,共38页
Network-on-Chip(NoC)systems are progressively deployed in connecting massively parallel megacore systems in the new computing architecture.As a result,application mapping has become an important aspect of performance ... Network-on-Chip(NoC)systems are progressively deployed in connecting massively parallel megacore systems in the new computing architecture.As a result,application mapping has become an important aspect of performance and scalability,as current trends require the distribution of computation across network nodes/points.In this paper,we survey a large number of mapping and scheduling techniques designed for NoC architectures.This time,we concentrated on 3D systems.We take a systematic literature review approach to analyze existing methods across static,dynamic,hybrid,and machine-learning-based approaches,alongside preliminary AI-based dynamic models in recent works.We classify them into several main aspects covering power-aware mapping,fault tolerance,load-balancing,and adaptive for dynamic workloads.Also,we assess the efficacy of each method against performance parameters,such as latency,throughput,response time,and error rate.Key challenges,including energy efficiency,real-time adaptability,and reinforcement learning integration,are highlighted as well.To the best of our knowledge,this is one of the recent reviews that identifies both traditional and AI-based algorithms for mapping over a modern NoC,and opens research challenges.Finally,we provide directions for future work toward improved adaptability and scalability via lightweight learned models and hierarchical mapping frameworks. 展开更多
关键词 Application mapping mapping techniques netWORK-ON-CHIP system on chip optimisation
在线阅读 下载PDF
基于综合性实例驱动的ASP.NET(C#)教学模式构建与应用
3
作者 彭芳策 《电脑知识与技术》 2026年第3期150-153,共4页
针对当前ASP.NET(C#)教学中理论与实践脱节、学生综合实训能力培养不足等问题,本研究构建并实践运用综合性实例驱动的教学模式。该模式以涵盖多知识点、贴近真实应用的Web综合项目为核心载体,通过项目驱动、任务分解、协作学习等方法组... 针对当前ASP.NET(C#)教学中理论与实践脱节、学生综合实训能力培养不足等问题,本研究构建并实践运用综合性实例驱动的教学模式。该模式以涵盖多知识点、贴近真实应用的Web综合项目为核心载体,通过项目驱动、任务分解、协作学习等方法组织教学,并融合人工智能(AI)技术赋能教学全过程。研究旨在破解传统教学的碎片化困境,系统性培养学生的工程实践能力与创新思维,形成闭环式的人才培养新机制。 展开更多
关键词 asp.net(C#) 教学模式 综合性实例 项目驱动
在线阅读 下载PDF
基于ASP.NET的学生管理系统的设计与实现
4
作者 邹珺 《办公自动化》 2025年第15期99-101,共3页
随着科技的日新月异,教务工作管理要逐步信息化,使用计算机强大的计算与统计功能来管理学校的学生与教师也变得日渐重要。学生管理系统基于ASP.NET,使用Entity Framework进行数据库数据的访问,包含学生管理、课程管理、成绩管理和教师... 随着科技的日新月异,教务工作管理要逐步信息化,使用计算机强大的计算与统计功能来管理学校的学生与教师也变得日渐重要。学生管理系统基于ASP.NET,使用Entity Framework进行数据库数据的访问,包含学生管理、课程管理、成绩管理和教师管理功能,提供当前学生的学生总览,学生课程成绩、所学习课程的分配、教师信息一览表、教师当前所授课程信息等教务工作的管理。通过该系统,学生和教师可方便、轻松地进入系统管理自己的信息,也便于更好地服务于学校教务管理系统。 展开更多
关键词 学生管理系统 asp.net Entity Framework 数据 教务
在线阅读 下载PDF
ASP.NET项目中Excel数据导入导出应用研究
5
作者 陈印 邓林 《内江科技》 2025年第8期49-50,115,共3页
Excel文档是ASP.NET项目中最常用的数据导入导出载体。分析比较了.NET框架中访问Excel文档最常见的几种技术,提出了一种基于Closed XML+ADO.NET技术实现ASP.NET项目中Excel数据导入导出的解决方案,并通过项目案例进行了论证。1背景在ASP... Excel文档是ASP.NET项目中最常用的数据导入导出载体。分析比较了.NET框架中访问Excel文档最常见的几种技术,提出了一种基于Closed XML+ADO.NET技术实现ASP.NET项目中Excel数据导入导出的解决方案,并通过项目案例进行了论证。1背景在ASP.NET项目中,用户往往需要将项目数据库数据导出为Excel文件分析或分享,或使用Excel文件将外部数据批量、快速导入到项目数据库中存储。如何访问Excel文件、如何访问服务器数据库是此类需求中需要解决的首要问题。 展开更多
关键词 Excel数据导入导出 asp.net项目 ADO.net
在线阅读 下载PDF
基于ASP-SERes2Net的说话人识别算法 被引量:1
6
作者 令晓明 陈鸿雁 +1 位作者 张小玉 张真 《北京工业大学学报》 CAS 北大核心 2025年第1期42-50,共9页
为提升说话人识别的特征提取能力,解决在噪声环境下识别率低的问题,提出一种基于残差网络的说话人识别算法——ASP-SERes2Net。首先,采用梅尔语谱图作为神经网络的输入;其次,改进Res2Net网络的残差块,并且在每个残差块后引入压缩激活(sq... 为提升说话人识别的特征提取能力,解决在噪声环境下识别率低的问题,提出一种基于残差网络的说话人识别算法——ASP-SERes2Net。首先,采用梅尔语谱图作为神经网络的输入;其次,改进Res2Net网络的残差块,并且在每个残差块后引入压缩激活(squeeze-and-excitation,SE)注意力模块;然后,用注意力统计池化(attention statistics pooling,ASP)代替原来的平均池化;最后,采用附加角裕度的Softmax(additive angular margin Softmax,AAM-Softmax)对说话人身份进行分类。通过实验,将ASP-SERes2Net算法与时延神经网络(time delay neural network,TDNN)、ResNet34和Res2Net进行对比,ASP-SERes2Net算法的最小检测代价函数(minimum detection cost function,MinDCF)值为0.0401,等误率(equal error rate,EER)为0.52%,明显优于其他3个模型。结果表明,ASP-SERes2Net算法性能更优,适合应用于噪声环境下的说话人识别。 展开更多
关键词 说话人识别 梅尔语谱图 Res2net 压缩激活(squeeze-and-excitation SE)注意力模块 注意力统计池化(attention statistics pooling asp) 附加角裕度的Softmax(additive angular margin Softmax AAM-Softmax)
在线阅读 下载PDF
Elastic properties of Cu–6wt% Ag alloy wires for pulsed magnets investigated by ultrasonic techniques 被引量:1
7
作者 Ziyu Li Tianyi Gu +12 位作者 Wenqi Wei Yang Yuan Zhuo Wang Kangjian Luo Yupeng Pan Jianfeng Xie Shaozhe Zhang Tao Peng Lin Liu Qi Chen Xiaotao Han Yongkang Luo Liang Li 《Chinese Physics B》 2025年第2期90-95,共6页
Conductor materials with good mechanical performance as well as high electrical and thermal conductivities are particularly important to break through the current bottle-neck limit(~ 100 T) of pulsed magnets. Here, we... Conductor materials with good mechanical performance as well as high electrical and thermal conductivities are particularly important to break through the current bottle-neck limit(~ 100 T) of pulsed magnets. Here, we perform systematic studies on the elastic properties of the Cu–6wt% Ag alloy wire, which is a promising candidate material for the new-generation pulsed magnets, by employing two independent ultrasonic techniques, i.e., resonant ultrasound spectroscopy(RUS) and ultrasound pulse-echo experiments. Our RUS measurements manifest that the elastic properties of the Cu–6wt% Ag alloy wires can be improved by an electroplastic drawing procedure as compared with the conventional cold drawing. We also take this opportunity to test the availability of our newly-built ultrasound pulse-echo facility at the Wuhan National High Magnetic Field Center(WHMFC, China), and the results suggest that the elastic performance of the electroplastically-drawn Cu–6wt% Ag alloy wire remains excellent without anomalous softening under extreme conditions,e.g., in ultra-high magnetic field up to 50 T and nitrogen or helium cryogenic liquids. 展开更多
关键词 high-field magnet Cu–Ag alloy ultrasonic techniques elastic constants
原文传递
基于ASP.NET Core的企业岗位竞聘投票与综合考评系统设计 被引量:1
8
作者 唐毅 陆媚 《现代信息科技》 2025年第14期113-117,共5页
随着管理理念的持续深化,众多企业愈发重视关键岗位的聘用管理与考核工作。然而,岗位数量的逐步增加以及考核指标的日益细化,暴露出传统线下竞聘与考评模式暴露出人手不足、效率低下的弊端,给企业人力资源部门带来巨大挑战。因此,文章... 随着管理理念的持续深化,众多企业愈发重视关键岗位的聘用管理与考核工作。然而,岗位数量的逐步增加以及考核指标的日益细化,暴露出传统线下竞聘与考评模式暴露出人手不足、效率低下的弊端,给企业人力资源部门带来巨大挑战。因此,文章提出一种基于ASP.NET Core的数字化解决方案。该方案以线上流程取代传统纸质流程,借助数字化技术实现数据的快速精准分析与统计,在显著提升数据处理速度与准确性的同时增强流程透明度,使竞聘和考评全程更加公开透明。方案实施后,不仅有效解决了原有难题,还大幅提升了工作效率和管理水平。 展开更多
关键词 asp.net Core 岗位竞聘投票 岗位综合考评 无纸化 系统设计
在线阅读 下载PDF
Leica ASP300S全自动组织脱水机加压失败故障排除
9
作者 尚杰 周文艳 +1 位作者 苏蔚 狄文玉 《医疗卫生装备》 2026年第1期117-120,共4页
介绍了Leica ASP300S全自动组织脱水机在日常工作中出现的加压失败故障(故障代码652),分析了故障产生的原因并对脱水程序设置和换液方法进行了改进,提出了具体的排除方法,为同行维修类似故障提供了参考。
关键词 Leica asp300S全自动组织脱水机 加压失败 故障排除
在线阅读 下载PDF
Corrigendum to“Elastic properties of Cu–6wt%Ag alloy wires for pulsed magnets investigated by ultrasonic techniques”
10
作者 Ziyu Li Tianyi Gu +12 位作者 Wenqi Wei Yang Yuan Zhuo Wang Kangjian Luo Yupeng Pan Jianfeng Xie Shaozhe Zhang Tao Peng Lin Liu Qi Chen Xiaotao Han Yongkang Luo Liang Li 《Chinese Physics B》 2025年第4期625-625,共1页
Figure 3 in the paper[Chin.Phys.B 34020701(2025)]contains an axis labeling error.The revised figure is provided.This modification does not affect the result presented in the paper.
关键词 high-field magnet Cu-Ag alloy ultrasonic techniques elastic constants
原文传递
Advanced bioanalytical techniques for pharmacokinetic studies of nanocarrier drug delivery systems
11
作者 Xiangjun Meng Jiayi Yao Jingkai Gu 《Journal of Pharmaceutical Analysis》 2025年第1期19-29,共11页
Significant investment in nanocarrier drug delivery systems(Nano-DDSs)has yielded only a limited number of successfully marketed nanomedicines,highlighting a low rate of clinical translation.A primary contributing fac... Significant investment in nanocarrier drug delivery systems(Nano-DDSs)has yielded only a limited number of successfully marketed nanomedicines,highlighting a low rate of clinical translation.A primary contributing factor is the lack of foundational understanding of in vivo processes.Comprehensive knowledge of the pharmacokinetics of Nano-DDSs is essential for developing more efficacious nanomedicines and accurately evaluating their safety and associated risks.However,the complexity of Nano-DDSs has impeded thorough and systematic pharmacokinetic studies.Key components of pharmacokinetic investigations on Nano-DDSs include the analysis of the released drug,the encapsulated drug,and the nanomaterial,which present a higher level of complexity compared to traditional small-molecule drugs.Establishing an appropriate approach for monitoring the pharmacokinetics of Nano-DDSs is crucial for facilitating the clinical translation of nanomedicines.This review provides an overview of advanced bioanalytical methodologies employed in studying the pharmacokinetics of anticancer organic Nano-DDSs over the past five years.We hope that this review will enhance the understanding of the pharmacokinetics of Nano-DDSs and support the advancement of nanomedicines. 展开更多
关键词 Nanocarrier drug delivery systems BIOANALYSIS PHARMACOKInetICS Sample fractionation technique
暂未订购
基于ASP.NET MVC的高职院校网站的设计与实现
12
作者 支易 《软件》 2025年第6期149-151,共3页
本文基于ASP.NET MVC框架,针对高职院校网站的功能需求,提出了一套完整的网站设计与实现方案。首先,分析了高职院校网站的功能需求和用户角色,确定了网站的基本架构;其次,详细介绍了基于ASP.NET MVC框架的网站设计方法,包括系统架构、... 本文基于ASP.NET MVC框架,针对高职院校网站的功能需求,提出了一套完整的网站设计与实现方案。首先,分析了高职院校网站的功能需求和用户角色,确定了网站的基本架构;其次,详细介绍了基于ASP.NET MVC框架的网站设计方法,包括系统架构、数据库设计以及安全性设计;最后,设计实现了网站的前台、后台管理功能,并对移动端进行了适配、网站测试与部署,确保网站稳定性和可用性。 展开更多
关键词 asp.net MVC 高职院校 网站设计
在线阅读 下载PDF
基于ASP.NET MVC的在线房屋租赁管理平台研究
13
作者 王琦 王俊伟 《电脑知识与技术》 2025年第23期38-40,共3页
针对传统房屋租赁数据管理在应对日益增长的数据处理与分析需求时所暴露的局限性,该研究设计并构建了一套基于ASP.NET MVC的在线房屋租赁管理平台。该平台运用了对象关系映射(ORM)框架EntityFramework与控制反转(IoC)容器AutoFac,构建... 针对传统房屋租赁数据管理在应对日益增长的数据处理与分析需求时所暴露的局限性,该研究设计并构建了一套基于ASP.NET MVC的在线房屋租赁管理平台。该平台运用了对象关系映射(ORM)框架EntityFramework与控制反转(IoC)容器AutoFac,构建了基于接口的多层应用程序架构,并结合MUI、HUI等前端技术,优化了在线房源展示、用户交互及后台管理等核心功能,从而显著提升了房屋租赁数据管理的效率、信息服务的质量以及用户体验的便捷性。 展开更多
关键词 asp.net MVC 房屋租赁管理 IOC ORM
在线阅读 下载PDF
ASP.NET框架在教学信息管理系统中的应用
14
作者 李琼 赵静 《无线互联科技》 2025年第6期82-85,共4页
每年都会有大批外国留学生来我国高校进修学习,为进一步提升教务管理效率,提高教师的教学水平,学院计划开发一套教学信息管理系统,实现对留学生汉语课程教学的信息化管理。文章通过对某大学汉语学院教学信息管理系统的设计与实施,讨论AS... 每年都会有大批外国留学生来我国高校进修学习,为进一步提升教务管理效率,提高教师的教学水平,学院计划开发一套教学信息管理系统,实现对留学生汉语课程教学的信息化管理。文章通过对某大学汉语学院教学信息管理系统的设计与实施,讨论ASP.NET框架在教学信息管理系统中的具体应用。 展开更多
关键词 教学信息管理系统 asp.net框架 世界协调时间 进程同步
在线阅读 下载PDF
基于改进EfficientNet-B0的轻量化苹果叶病害识别 被引量:1
15
作者 王新皓 苏淑靖 +1 位作者 翟聪 文若铭 《农机化研究》 北大核心 2026年第3期137-144,共8页
为了对苹果叶片病害进行精准有效识别,提出了一种基于改进EfficientNet-B0的轻量级高精度识别模型——LC-EfficientNet。首先,在MBConv模块中引入无参数注意力模块SimAM,提高识别能力的同时不增加模型计算量;其次,结合ShuffleNetV2双分... 为了对苹果叶片病害进行精准有效识别,提出了一种基于改进EfficientNet-B0的轻量级高精度识别模型——LC-EfficientNet。首先,在MBConv模块中引入无参数注意力模块SimAM,提高识别能力的同时不增加模型计算量;其次,结合ShuffleNetV2双分支结构思想与MBConv生成改进模块HPRConv,充分利用双分支结构,使用深度可分离卷积后,引入通道混洗技术与通道拼接技术,显著减少计算量和参数量且提升了模型对不同层次特征的提取能力;最后,将激活函数由Swith换为Mish,以帮助模型更好地拟合数据,提升准确率。使用模型分别对PlantVillage和Appleleaf9苹果叶部病害数据集进行训练与测试实验,结果表明LC-EfficientNet模型在两个数据集上的分类准确率分别达到98.83%和94.67%,相较于原模型分别提升了1.11和2.26个百分点,参数量从5.3 MB左右降低到4.5 MB左右,在降低参数量的同时增加了准确率;与其他经典网络模型相比,LC-EfficientNet在各项性能评估指标上也均有所提升。研究可为苹果叶部病害识别提供新的解决方案。 展开更多
关键词 苹果叶 病害识别 卷积神经网络 轻量级 Efficientnet-B0 SimAM注意力模块 图像处理技术
在线阅读 下载PDF
Key Techniques for High-yield and High-efficiency Cultivation of‘Zhouhua 5’Peanut under Film Mulching
16
作者 Chaoyang JIA Yake LEI +3 位作者 Jianhang ZHANG Shijie ZHAN Chenwei DENG Jingbin CUI 《Agricultural Biotechnology》 2026年第1期13-15,25,共4页
With the expansion of peanut planting area year by year,film mulching cultivation has become increasingly important in peanut production due to its unique advantages in enhancing both yield per unit area and overall e... With the expansion of peanut planting area year by year,film mulching cultivation has become increasingly important in peanut production due to its unique advantages in enhancing both yield per unit area and overall economic benefits.Based on the varietal characteristics of‘Zhouhua 5’and addressing practical issues in peanut production,this paper summarized key techniques for high-yield and high-efficiency film mulching cultivation of this variety.These techniques cover all critical stages,including land preparation and fertilization,seed preparation,sowing methods,field management,and timely harvesting,providing technical guidance for varietal promotion and peanut production. 展开更多
关键词 PEANUT Zhouhua 5 Film mulching Key technique
在线阅读 下载PDF
Prospects and potential mechanism of appropriate traditional Chinese medicine techniques for myopia treatment
17
作者 Hui-Min Guo Hong-Mei Li Shu-Li Man 《Traditional Medicine Research》 2026年第1期100-114,共15页
Currently,the number of patients with myopia is increasing rapidly across the globe.Traditional Chinese medicine(TCM),with its long history and rich experience,has shown promise in effectively managing and treating th... Currently,the number of patients with myopia is increasing rapidly across the globe.Traditional Chinese medicine(TCM),with its long history and rich experience,has shown promise in effectively managing and treating this condition.Nevertheless,considering the vast amount of research that is currently being conducted,focusing on the utilization of TCM in the management of myopia,there is an urgent requirement for a thorough and comprehensive review.The review would serve to clarify the practical applications of TCM within this specific field,and it would also aim to elucidate the underlying mechanisms that are at play,providing a deeper understanding of how TCM principles can be effectively integrated into modern medical practices.Here,some modern medical pathogenesis of myopia and appropriate TCM techniques studies are summarized in the prevention and treatment of myopia.Further,we discussed the potential mechanisms and the future research directions of TCM against myopia.Identifying these mechanisms is crucial for understanding how TCM can be effectively utilized in this context.The combination of various TCM methods or the combination of traditional Chinese and Western medicine is of great significance for the prevention and control of myopia in the future. 展开更多
关键词 traditional Chinese medicine MYOPIA PATHOGENESIS appropriate TCM techniques
暂未订购
Cerebrospinal fluid as a therapeutic medium for magnetic nanoparticle transport in brain cancer hyperthermia
18
作者 Essam T Abdelwahab Ahmed A Elsawy +1 位作者 Abdallah A Henedy Sara I Abdelsalam 《Chinese Physics B》 2026年第2期475-490,共16页
Neuronanomedicine is a promising interdisciplinary field combining two critical fields,neuroscience and nanotechnology.This study focuses on the engineering of magnetized nanoparticles(MNPs)in diagnosing and treating ... Neuronanomedicine is a promising interdisciplinary field combining two critical fields,neuroscience and nanotechnology.This study focuses on the engineering of magnetized nanoparticles(MNPs)in diagnosing and treating neurological disorders and brain cancer.Additionally,this mechanism enhances the effectiveness of magnetic-guided drug delivery.The alternating magnetic field is applied to control the directions of the MNPs to target the tumor cells.This study approaches the radiotherapy techniques of magnetic hyperthermia therapy(MHT),wherein the thermal radiative heat transfer effect is applied to achieve homogenous heating to destroy cancer cells.MNPs are injected through the cerebrospinal fluid(CSF)transport in the glymphatic system.The elastic properties of the cerebral arteries cause peristaltic propulsion for the resulting nanofluid.Therefore,the effective Maxwell model for the nanofluid thermal conductivity is selected.The nanofluid governing equations are solved using the perturbation technique under small wavelength number and long wavelength approximation with small Reynolds number.Additionally,the effects of thermal slip and elastic properties boundary conditions are incorporated.The graphical results for the streamwise velocity,pressure,and temperature distributions are plotted using MATLAB package considering the different effects of the magnetic flux intensity,thermal radiation parameter,thermal slipping at boundaries,elastic wall properties,and nanoparticle concentration.The results demonstrate the strong impact of the magnetic field and radiation heating in terms of enhancing the nanofluid CSF flow behavior and destroying cancer. 展开更多
关键词 peristaltic flow thermal radiation magnetic field NANOFLUID perturbation technique
原文传递
Enhancing Heat Exchanger Performance through Passive Techniques:A Comprehensive Review
19
作者 Muhammad Waheed Azam Uzair Sajjad +1 位作者 Faisal Maqbool Giovani Sempirini 《Frontiers in Heat and Mass Transfer》 2026年第1期25-53,共29页
Heat exchangers play a crucial role in thermal energy systems,with their performance directly impacting efficiency,cost,and environmental impact.Apowerful technique for performance improvement can be given by passive ... Heat exchangers play a crucial role in thermal energy systems,with their performance directly impacting efficiency,cost,and environmental impact.Apowerful technique for performance improvement can be given by passive enhancement strategies,which are characterized by their dependability and minimal external power requirements.This comprehensive review critically assesses recent advancements in such passive methods to evaluate their heat transfer mechanisms,performance characteristics,and practical implementation challenges.Our methodology involves a systematic and comprehensive analysis of various heat transfer enhancement techniques,including surface modifications,extended surfaces,swirl flow devices,and tube inserts.This approach synthesizes and integrates findings from a broad spectrum of experimental investigations and numerical simulations to establish a cohesive understanding of their performance characteristics and underlyingmechanisms.Based on the findings,passive heat transfer techniques result in significant improvements in thermal performance;for instance,corrugated and roughened surfaces increase the heat transfer coefficient by 50%–200%,and advanced insert geometries,such as modified twisted tapes,can increase it by more than 300%,typically accompanied by significant pressure-drop penalties.However,an important finding is the general trade-off between enhanced heat transfer and higher frictional loss,which requires optimization depending on the applications.Finally,this review also provides recommendations that will document the gaps of various passive techniques in heat exchangers to future address. 展开更多
关键词 Heat transfer enhancement passive techniques pressure drop heat exchangers
在线阅读 下载PDF
Impact of Data Processing Techniques on AI Models for Attack-Based Imbalanced and Encrypted Traffic within IoT Environments
20
作者 Yeasul Kim Chaeeun Won Hwankuk Kim 《Computers, Materials & Continua》 2026年第1期247-274,共28页
With the increasing emphasis on personal information protection,encryption through security protocols has emerged as a critical requirement in data transmission and reception processes.Nevertheless,IoT ecosystems comp... With the increasing emphasis on personal information protection,encryption through security protocols has emerged as a critical requirement in data transmission and reception processes.Nevertheless,IoT ecosystems comprise heterogeneous networks where outdated systems coexist with the latest devices,spanning a range of devices from non-encrypted ones to fully encrypted ones.Given the limited visibility into payloads in this context,this study investigates AI-based attack detection methods that leverage encrypted traffic metadata,eliminating the need for decryption and minimizing system performance degradation—especially in light of these heterogeneous devices.Using the UNSW-NB15 and CICIoT-2023 dataset,encrypted and unencrypted traffic were categorized according to security protocol,and AI-based intrusion detection experiments were conducted for each traffic type based on metadata.To mitigate the problem of class imbalance,eight different data sampling techniques were applied.The effectiveness of these sampling techniques was then comparatively analyzed using two ensemble models and three Deep Learning(DL)models from various perspectives.The experimental results confirmed that metadata-based attack detection is feasible using only encrypted traffic.In the UNSW-NB15 dataset,the f1-score of encrypted traffic was approximately 0.98,which is 4.3%higher than that of unencrypted traffic(approximately 0.94).In addition,analysis of the encrypted traffic in the CICIoT-2023 dataset using the same method showed a significantly lower f1-score of roughly 0.43,indicating that the quality of the dataset and the preprocessing approach have a substantial impact on detection performance.Furthermore,when data sampling techniques were applied to encrypted traffic,the recall in the UNSWNB15(Encrypted)dataset improved by up to 23.0%,and in the CICIoT-2023(Encrypted)dataset by 20.26%,showing a similar level of improvement.Notably,in CICIoT-2023,f1-score and Receiver Operation Characteristic-Area Under the Curve(ROC-AUC)increased by 59.0%and 55.94%,respectively.These results suggest that data sampling can have a positive effect even in encrypted environments.However,the extent of the improvement may vary depending on data quality,model architecture,and sampling strategy. 展开更多
关键词 Encrypted traffic attack detection data sampling technique AI-based detection IoT environment
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部