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基于深度学习的信息通信网络工程中的智能数据传输系统设计

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通信电源技术 2024年第8期41卷 22-24页

作者：张光胜广东长实通信科技有限公司广东清远511500

文章针对现代通信网络中日益增长的数据流量和网络复杂性,提出一种基于深度学习的智能数据传输系统设计方案。该系统利用深度神经网络对网络环境和数据流量特征进行建模与分析,实现自适应的传输优化、智能路由选择、主动安全防护以及快... 详细信息

文章针对现代通信网络中日益增长的数据流量和网络复杂性,提出一种基于深度学习的智能数据传输系统设计方案。该系统利用深度神经网络对网络环境和数据流量特征进行建模与分析,实现自适应的传输优化、智能路由选择、主动安全防护以及快速故障恢复。通过构建基于长短期记忆(Long Short-Term Memory,LSTM)的流量预测模型、深度强化学习路由选择算法、基于自编码器的入侵检测模型等,系统能优化传输路径、调整传输参数、采取安全防护措施。实验结果显示,与传统方法相比,该智能系统提高了吞吐量、降低了时延、减少了丢包率,并加快了故障恢复速度。

关键词：深度学习智能数据传输网络优化

基于无源光网络技术的接入层通信线路设计分析

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信息记录材料 2024年第6期25卷 10-12页

作者：张光胜广东长实通信科技有限公司广东清远511500

随着网络技术的飞速发展,无源光网络(passive optical network,PON)因其高效、灵活的特性逐渐成为接入层通信的主流技术。PON技术通过无源光器件实现信号的传输和分配,为接入层通信提供了高带宽、长距离传输的能力。本文首先介绍了PON... 详细信息

随着网络技术的飞速发展,无源光网络(passive optical network,PON)因其高效、灵活的特性逐渐成为接入层通信的主流技术。PON技术通过无源光器件实现信号的传输和分配,为接入层通信提供了高带宽、长距离传输的能力。本文首先介绍了PON技术的基础原理,包括光纤通信的基本原理、PON的技术架构和关键组件。其次,深入探讨了接入层通信线路设计的要点,包括信号衰减、噪声问题、光分路器选择等,并提出了相应的优化策略。通过实际案例分析,进一步揭示了PON技术在接入层设计中的实际应用与优化效果。最后,对PON技术的发展趋势和未来研究方向进行了展望。

关键词： PON 接入层通信光分路器

基于AHP模型的我国省域物流能力时空评价研究

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物流科技 2024年第11期47卷 28-31页

作者：张广胜高淑芳山东管理学院山东济南250357

从区域经济基础、区域物流规模、区域物流设施、区域物流信息、区域物流人才5个方面构建了区域物流能力评价指标体系,运用AHP方法确定2013—2021年我国31个省份区域物流能力指标权重,并通过加权平均算法得到各年度区域物流能力。结果表... 详细信息

从区域经济基础、区域物流规模、区域物流设施、区域物流信息、区域物流人才5个方面构建了区域物流能力评价指标体系,运用AHP方法确定2013—2021年我国31个省份区域物流能力指标权重,并通过加权平均算法得到各年度区域物流能力。结果表明,从全国来看,2013—2021年间我国区域物流能力值总体上呈增长态势,但各省份间物流发展差距较大,为促进经济健康发展,政府部门应根据区域物流网络和产业分布特点确定区域物流基本结构与职能,加大对物流能力较低地区的政策支持,促进区域物流健康均衡发展。

关键词：区域物流能力指标体系层次分析法评价

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复掺再生微粉新拌浆体流变性能研究

城市建筑 2024年第8期21卷 220-224页

作者：王燕平张光省宋政锦扬州市隧道管理处苏交科集团股份有限公司

文章通过对复掺再生微粉新拌浆体进行流变测试,深入研究了矿物掺合料种类及掺量对复掺再生微粉胶凝体系流变特性的影响。实验结果表明:复掺再生微粉浆体30 min的经时流动度下降幅度并未出现明显增大。复掺再生微粉浆体的流变模型与Hersc... 详细信息

文章通过对复掺再生微粉新拌浆体进行流变测试,深入研究了矿物掺合料种类及掺量对复掺再生微粉胶凝体系流变特性的影响。实验结果表明:复掺再生微粉浆体30 min的经时流动度下降幅度并未出现明显增大。复掺再生微粉浆体的流变模型与Herschel-Bulkley模型更为接近,在复掺再生微粉中增加粉煤灰的掺量,能够增加浆体的流动度。

关键词：再生微粉流变特性经时损失流变模型

Spatial Spillover Effects of the Impact of Agricultural Mechanization on Carbon Emission Intensity in Agriculture:An Empirical Study Based on the Panel Data of 282 Cities

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China Economic Transition 2023年第4期6卷 458-482页

作者： XU Qinghua zhang guangsheng The College of Economics and Management Shenyang Agricultural UniversityShenyang 100866China Business School Liaoning UniversityShenyang 110136China

The extreme weather caused by the global warming effect has triggered huge losses to agricultural production.A hot issue for governments and scholars is how to effectively reduce carbon emission intensity in *** agricultural farming practices that are high pollution and high energy cosuming have exacerbated the vulnerability of regional *** sustainable development of agriculture is faced with the two dilemmas of a low utilization rate of green resources and the serious pollution of ***,environmental and ecological carrying capacities have reached theirlimits,seriouslyhinderingtthe high-quality development of low-carbon agriculture in ***,based on the panel data of 282 cities,the Spatial Dubin Model(SDM)is employed to examine the impact of agricultural mechanization on carbon emission intensity in *** is found that from 1999 to 2019 carbon emission intensity in agriculture showed an overall downward trend;as of 2019,the agricultural field had completed the target of carbon emission reduction,,oneyear aheadof *** a local perspective,approximately 14.89%6of fagricultural industries in prefecture-level city have still not achieved carbon emission reduction targets,and agricultural carbon emission reduction tasks were better completed in major grain-producing areas than in nonmajor grain-producing *** mechanization has significantly reduced carbonemission intensityyinlocal agriculture *** impact of agricultural mechanizationoncarbon emission intensity in agriculture has not only a significant negative spatial spillover effect but also a significant effect on spatial carbon emission *** with non-major ggrain-producingareas,agricultural mechanization plays a greater role in reducing spatial carbon emissions in major grain-producing *** studies find that agricultural mechanization is conducive to overcome difficulties,such as instability of property rights

关键词： agricultural mechanization carbon emission intensity in agriculture planting structure spatial spillover effect low-carbon agriculture

High MXene loading, nacre-inspired MXene/ANF electromagnetic interference shielding composite films with ultralong strain-tofailure and excellent Joule heating performance

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Nano Research 2024年第3期17卷 2061-2069页

作者： Jiaen Wang Tianliang Song Wei Ming Moxi Yele Longfu Chen Hao zhang Xiaojuan zhang Benliang Liang guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044China College of Chemistry and Materials Engineering Beijing Technology and Business UniversityBeijing 100048China Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China

The high power density and intelligence of next-generation flexible electronic devices bring many challenges to fabricate flexible composite films with electromagnetic interference(EMI)shielding effectiveness(SE)property and excellent toughness via a simple ***,inspired by the layered structure and biopolymer matrix networks in natural nacre,nacre-like layered Ti_(3)C2TX(MXene)/aramid nanofiber(ANF)films were fabricated through sol-gel,vacuum-assisted filtration,and ***-dimensional(3D)interconnected aramid nanofibers networks between adjacent layered MXene result in an ultralong strain-to-failure of the *** though the functional filler MXene contents are as high as 60 wt.%and 70 wt.%,the strain-to-failure of the films could reach astonishing values of 18.34%±1.86%and 14.43%±1.26%,*** the tensile strength could maintain about 85 ***,with such a high filler,the film can also withstand double folding and vigorous rubbing without damage,which could better adapt to a harsh application *** result means that this work provides a convenient way to prepare other high functional filler composite films with excellent mechanical *** EMI SE values could reach 45 and 52.15 dB at 60 wt.%and 70 wt.%MXene in 8.2–12.4 ***,the films have prominent Joule heating properties,high sensitivity(<15 s),small voltage operation(0.5 V),and high operation constancy(1300 s).Therefore,nacre-inspired MXene/ANF composite films in this work have ability to apply in many areas including communication technology,military,and aerospace.

关键词： bioinspired aramid nanofiber networks ultralong strain-to-failure toughening mechanism electromagnetic interference shielding

Research progress of heterogeneous structure magnesium alloys:A review

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Journal of Magnesium and Alloys 2024年第6期12卷 2147-2181页

作者： Xiang Chen Junlei zhang Min Wang Weizhang Wang Di Zhao Haiming Huang Qi Zhao Xiaofei Xu Hongxia zhang guangsheng Huang Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration ZoneXiangyang 441000China College of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002China College of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China Hubei Key Laboratory of Energy Storage and Power Battery(Hubei University of Automotive Technology) Shiyan 442002China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China School of Mechanical Engineering Suzhou University of Science and TechnologySuzhou 215009China

In recent years,a new class of metallic materials featuring heterogeneous structures has *** materials consist of distinct soft and hard domains with significant differences in mechanical properties,allowing them to maintain high strength while offering superior ***(Mg)alloys,renowned for their low density,high specific strength,exceptional vibration damping,and electromagnetic shielding properties,exhibit tremendous potential as lightweight and functional *** their advantageous properties,high-strength Mg alloys often suffer from limited ***,the emergence of heterogeneous materials provides a fresh perspective for the development of Mg alloys with both high strength and *** article provided a fundamental overview of heterostructured materials and systematically reviewed the recent research progress in the design of Mg alloys with strength-ductility balance based on heterostructure *** review encompassed various aspects,including preparation methods,formation mechanisms of diverse heterostructures,and mechanical properties,both within domestic and international *** this basis,the article discussed the challenges encountered in the design and fabrication of heterostructured Mg alloys,as well as the urgent issues that require attention and resolution in the future.©2024 Chongqing *** services provided by Elsevier *** behalf of KeAi Communications ***.

关键词： Mg alloys Heterogeneous structure Processing techniques Strength and ductility Hetero-deformation induced stress Strain gradient

Single-cell mass spectrometry studies of drug metabolism heterogeneity and primary resistance to gefitinib in non-small cell lung cancer cells

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Chinese Chemical Letters 2024年第2期35卷 436-440页

作者： Guizhen Zhu Yaoyao Zhao Wenmei zhang Yuanyuan Wu Yuanxing Liu guangsheng Guo Xiayan Wang Zhihong Liu Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory for Green Catalysis and SeparationDepartment of ChemistryBeijing University of TechnologyBeijing 100124China Minzu University of China Beijing 100081China Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Health Science and EngineeringHubei UniversityWuhan 430062China

Patients with epidermal growth factor receptor(EGFR)wild-type non-small cell lung cancer(NSCLC)often show primary resistance to gefitinib *** is thus necessary to study the metabolism of gefitinib in NSCLC cells to comprehensively reveal the reasons for the primary resistance of ***,we develop a platform for studying drug metabolism heterogeneity based on single-cell mass spectrometry(sDMH-scMS)by integrating living-cell electrolaunching ionization MS(ILCEI-MS)and high-performance liquid chromatography-MS(HPLC-MS)analysis,and the primary resistance of NSCLC cells to gefitinib was studied using this *** ILCEI-MS analysis showed that approximately 11.9%of NSCLC single cells contained the gefitinib metabolite M11;HPLC-MS detection diluted the intensity of M11 in subpopulations and concealed the heterogeneity of drug metabolism in tumor single *** intensity of gefitinib in EGFR wild-type A549 cells was markedly lower than in mutant PC9 cells,and the intensity of gefitinib metabolites was significantly higher than in PC9 cells,suggesting that the primary resistance of NSCLC cells is related to gefitinib ***,the combination of gefitinib and the drug-metabolizing enzyme inhibitorα-naphthoflavone was shown to overcome the primary resistance of the NSCLC ***,the results of this study are expected to be applicable for clinical drug resistance diagnosis and treatment at the single-cell level.

关键词： Single-cell mass spectrometry Drug metabolism Non-small cell lung cancer Gefitinib Primary resistance

ThyroidNet:A Deep Learning Network for Localization and Classification of Thyroid Nodules

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 361-382页

作者： Lu Chen Huaqiang Chen Zhikai Pan Sheng Xu guangsheng Lai Shuwen Chen Shuihua Wang Xiaodong Gu Yudong zhang Ultrasonic Department Zhongda Hospital Affiliated to Southeast UniversityNanjing210009China School of Physics and Information Engineering Jiangsu Second Normal UniversityNanjing211200China School of Computing and Mathematical Sciences University of LeicesterLeicesterLE17RHUK Department of Information Systems Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia State Key Laboratory of MillimeterWaves Southeast UniversityNanjing210096China Jiangsu Province Engineering Research Center of Basic Education Big Data Application Jiangsu Second Normal UniversityNanjing211200China School of Software Engineering Quanzhou Normal UniversityQuanzhou362000China Department of Biological Sciences Xi’an Jiaotong-Liverpool UniversitySuzhou215123China

Aim:This study aims to establish an artificial intelligence model,ThyroidNet,to diagnose thyroid nodules using deep learning techniques ***:A novel method,ThyroidNet,is introduced and evaluated based on deep learning for the localization and classification of thyroid ***,we propose the multitask TransUnet,which combines the TransUnet encoder and decoder with multitask ***,we propose the DualLoss function,tailored to the thyroid nodule localization and classification *** balances the learning of the localization and classification tasks to help improve the model’s generalization ***,we introduce strategies for augmenting the ***,we submit a novel deep learning model,ThyroidNet,to accurately detect thyroid ***:ThyroidNet was evaluated on private datasets and was comparable to other existing methods,including U-Net and *** results show that ThyroidNet outperformed these methods in localizing and classifying thyroid *** achieved improved accuracy of 3.9%and 1.5%,***:ThyroidNet significantly improves the clinical diagnosis of thyroid nodules and supports medical image analysis *** research directions include optimization of the model structure,expansion of the dataset size,reduction of computational complexity and memory requirements,and exploration of additional applications of ThyroidNet in medical image analysis.

关键词： ThyroidNet deep learning TransUnet multitask learning medical image analysis