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关键词： 防火墙   分布式拒绝服务(DDoS)攻击   入侵检测系统   负载均衡  

摘要： 针对同步序列编号(SYN)洪水攻击的防御效果,本文通过实验方法分析了防火墙、入侵检测系统(IDS)和负载均衡(LB)技术3种电子信息技术在防御分布式拒绝服务(DDoS)攻击中的应用效果。研究结果表明:负载均衡技术对SYN洪水攻击的防御效果最佳,能够有效降低攻击对系统性能的影响。同时,防火墙和IDS也能起到一定的防御作用,但防御效果明显逊色于LB技术。本文研究结果为网络安全防护提供了理论支持,并为防御拒绝服务(DoS)攻击提供了参考依据。

关键词： 初中信息科技教学   融入   其他  

摘要： 随着《义务教育信息科技课程标准(2022 年版)》的颁布实施,信息科技课程的核心素养目标被明确为信息意识、计算思维、数字化学习与创新、信息社会责任。实现这些目标,要求教师超越单一学科教学的局限。本文基于笔者近三年在南充五中的信息科技教学实践,探讨在初中信息科技教学中融入其他学科元素的价值,并结合具体案例详述其落地方法。

关键词： 远程教育   教学档案管理   信息化建设  

摘要： 作为远程教育重要工作之一,教学档案管理效果可以反映教学质量与教学管理水准,受信息技术与互联网发展影响,实现信息化建设已成为远程教育发展的重要手段。基于此,本文以远程教育教学档案管理信息化建设概念为切入点,结合其可行性,剖析其在技术、管理、人员等层面上面临的问题并提出具体解决策略,供相关人员参考使用。

关键词： 跨学科学习   学习情境   计算思维  

摘要： 本文阐述在高中信息技术学科教学过程中构建真实的跨学科主题和学习情境,促使学生基于问题解决将任务分解与完成任务,培养计算思维,感悟数字化学习的魅力。

关键词： Ink jet printing  

摘要： Compared with methods such as sputter deposition and ion beam evaporation, inkjet printing offered a simpler and more efficient approach to directly deposit conformal multilayer high-temperature thin-film sensor circuits onto three-dimensional curved surfaces. A method for precisely manufacturing thin-film sensors using inkjet printing technology was proposed. The effects of nano-ink properties, as well as printing and sintering parameters, on the quality of film deposition were systematically investigated. Results demonstrated that high-quality, high-performance thin-film circuits can be successfully fabricated on ceramic or superalloy substrates. The thin-film sensor was calibrated up to 1 100 ℃, with the mean Seebeck coefficient measured at 46.8 μV/℃. The repeatability of the fitted thermoelectric curves reached 99.96%, and the maximum temperature measurement error was ± 0.21%. © 2025 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

关键词： Motivational strategies   Teacher professional development   Student engagement   Teacher-student interactions   Classroom practices   sic)(sic)(sic)(sic   sic)(sic)(sic)(sic)(sic)(sic   sic)(sic)(sic)(sic   sic)(sic)(sic)(sic   sic)(sic)(sic)(sic  

摘要： Major curricular reforms have appeared via the revised Icelandic National Curriculum for Secondary Education released in 2015. Few studies in Iceland have explored teachers' views and beliefs of motivational strategies for English teaching or considered the impact of the national curriculum on the learning experience in Iceland (Ingvarsd & oacute;ttir, 2018, Sigurgeirsson et al., 2018). Consequently, the primary goal of this study is to capture English teachers' views at the secondary level regarding (a) the role of motivational strategies in their own classroom practice and (b) its influence on the language learning experience of their students. Focus group interviews with beginning and experienced teachers, i.e., teachers in their first 3 years of teaching and those with 10 or more years of teaching experience, comprise the primary data. Interviews were transcribed and analyzed for significant themes in relation to the research focus (Braun & Clarke, 2021). Results are explored in relation to D & ouml;rnyei's L2 Experience dimension, particularly regarding teacher practices (D & ouml;rnyei, 2009) relating to how English teachers in Iceland understand their role in learners' L2 experience, how they think about their students' motivation, how they develop their own motivational practices, and the interplay between these aspects. 2015(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic).(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(Ingvarsd & oacute;ttir, 2018, Sigurgeirsson et al., 2018).(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic): (a) (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic);(b) (sic)(sic)(sic)(sic)(sic)

关键词： 机器人   抓取检测   模态融合   注意力机制   空洞卷积  

摘要： 为了解决复杂场景中基于单视角图像的平面物体抓取问题，本文提出了一种轻量端到端抓取检测网络EffiGrasp。该网络基于U-Net架构，融合了跨模态RGB-D特征融合模块SEIF与改进的空洞空间注意力机制，在保持网络轻量化的同时，有效提升了多模态特征表达与抓取位姿预测能力。融合模块通过SE注意力引导交互增强RGB图与深度图之间的几何与纹理互补性，改进的空洞注意力机制则提升了多尺度空间信息的提取能力。实验结果表明，所提出模型在Cornell数据集上抓取检测准确率达到98.9%，具备较快的推理速度与优越的泛化性能；在真实场景的机器人抓取实验中，展现出100%的抓取完成率。本文方法在提高准确率的同时显著减少了参数量，适合部署于资源受限的平台，具有广阔的应用前景。

关键词： 初中英语   情境教学   信息技术  

摘要： 当前,信息技术因具有较强的交互性、多样性特征,逐渐成为教育领域教师惯用的教学工具,也为各学科情境教学注入了新鲜活力。本文主要选择初中英语教学为切入点,深入探究信息技术与情境教学的整合原则与整合实践对策,选择某课时作为案例,分析利用信息技术打造初中英语教学情境,以提高学生学科能力及学科素养的合理手段,旨在为初中英语教学改革的进一步推进,提供适当的理论实践参考。

关键词： 现代信息技术   高校宣传   策略  

摘要： 随着信息技术的快速发展,高校宣传工作正处于变革的关键时期。本文以天府新区航空旅游职业学院宣传工作为例,深入剖析现代信息技术在高校宣传工作中在传播效率、内容呈现、互动反馈等方面的显著优势。同时,客观分析了现代信息技术在高校宣传工作中的应用现状、存在的问题及挑战,并在此基础上,提出相应的建议,旨在为高校在数字化时代提升宣传效能提供理论参考。