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翻山越岭,迎风而立:2023年中国电影产业备忘

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电影艺术 2024年第2期 38-49页

作者：尹鸿孙俨斌清华大学新闻与传播学院北京电影学院管理学院

2023年中国电影市场快速复苏,产业活跃度迅速提升,推动疫情后全球电影产业恢复。“大片”减少,腰部电影进入市场头部,国产电影品质整体提升。平台公司尤其具有互联网基因的平台企业与独立制片公司共同发力,从产到销全链条创新成为突破口... 详细信息

2023年中国电影市场快速复苏,产业活跃度迅速提升,推动疫情后全球电影产业恢复。“大片”减少,腰部电影进入市场头部,国产电影品质整体提升。平台公司尤其具有互联网基因的平台企业与独立制片公司共同发力,从产到销全链条创新成为突破口,国产电影市场份额具有绝对优势。但中国电影依然局限于内需型,海外市场弱小,优质产品的有效供给不确定,观影需求受消费能力和媒介分化的影响亟待提升。中国电影产业达到历史最好水平并局部超越,机遇与挑战并存。

关键词： 2023 中国电影产业电影市场腰部电影独立制片公司

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深度神经网络后门防御综述

信息安全学报 2024年第4期9卷 47-63页

作者：江钦辉李默涵孙彦斌广州大学网络空间安全学院/网络空间先进技术研究院广州510006

深度学习在各领域全面应用的同时,在其训练阶段和推理阶段也面临着诸多安全威胁。神经网络后门攻击是一类典型的面向深度学习的攻击方式,攻击者通过在训练阶段采用数据投毒、模型编辑或迁移学习等手段,向深度神经网络模型中植入非法后门... 详细信息

深度学习在各领域全面应用的同时,在其训练阶段和推理阶段也面临着诸多安全威胁。神经网络后门攻击是一类典型的面向深度学习的攻击方式,攻击者通过在训练阶段采用数据投毒、模型编辑或迁移学习等手段,向深度神经网络模型中植入非法后门,使得后门触发器在推理阶段出现时,模型输出会按照攻击者的意图偏斜。这类攻击赋予攻击者在一定条件下操控模型输出的能力,具有极强的隐蔽性和破坏性。因此,有效防御神经网络后门攻击是保证智能化服务安全的重要任务之一,也是智能化算法对抗研究的重要问题之一。本文从计算机视觉领域出发,综述了面向深度神经网络后门攻击的防御技术。首先,对神经网络后门攻击和防御的基础概念进行阐述,分析了神经网络后门攻击的三种策略以及建立后门防御机制的阶段和位置。然后,根据防御机制建立的不同阶段或位置,将目前典型的后门防御方法分为数据集级、模型级、输入级和可认证鲁棒性防御四类。每一类方法进行了详细的分析和总结,分析了各类方法的适用场景、建立阶段和研究现状。同时,从防御的原理、手段和场景等角度对每一类涉及到的具体防御方法进行了综合比较。最后,在上述分析的基础上,从针对新型后门攻击的防御方法、其他领域后门防御方法、更通用的后门防御方法、和防御评价基准等角度对后门防御的未来研究方向进行了展望。

关键词：后门防御后门攻击人工智能安全神经网络深度学习

厚煤层大采高智能化综采工作面关键技术研究与应用

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煤炭工程 2024年第1期56卷 14-20页

作者：孙延斌陈宝东吴涛王百晓枣矿集团付村煤业有限公司山东枣庄277615

针对付村煤矿井下综采装备落后、开采成本高的问题,综合考虑生产安全、经济效益、资源回收等多方面因素,提出了在付村煤矿建立厚煤层大采高智能化工作面的构想。根据付村煤矿3上煤层赋存条件,基于智能化工作面设备集成控制平台,结合大... 详细信息

针对付村煤矿井下综采装备落后、开采成本高的问题,综合考虑生产安全、经济效益、资源回收等多方面因素,提出了在付村煤矿建立厚煤层大采高智能化工作面的构想。根据付村煤矿3上煤层赋存条件,基于智能化工作面设备集成控制平台,结合大采高液压支架智能化电控系统、大采高采煤机智能化控制系统及移动互联网云存储系统,重点突破了工作面主要设备姿态监测、大采高工作面智能化开采工艺、远程控制与集中监控等技术,实现了采煤机自主定位、记忆截割、液压支架自动跟机移架、全工作面一键顺序启停、故障自动顺序停机、三机协同控制,优化升级了矿井信息化系统,建立了智能化综采工作面互联网云平台。结果表明:自2017年11月在付村煤矿3上1008工作面进行工程应用以来,工作面生产班工作人员从12人减少为5人巡视检查,减员率达50%以上,日采煤达6000 t,技术应用效果显著,建立了枣矿集团6 m厚煤层智能化开采的生产模式,为厚煤层大采高智能化生产系统的发展提供示范与实践基础。

关键词：厚煤层智能化工作面姿态监测记忆截割自动跟机移架三机协同控制

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基于数据集蜜点的抗损毁数据标识技术

计算机研究与发展 2024年第10期61卷 2417-2432页

作者：李浩波李默涵陈鹏孙彦斌田志宏广州大学网络空间安全学院广州510006 广东省工业控制系统攻防对抗重点实验室广州510006

数据标识是实现数据精准监管的前提条件,有效地保证了数据要素在跨域流转过程中的安全.当前已有针对单一数据的标识生成方法,但是随着数据规模的不断扩大,数据层面的数据标识无法直接应用到数据集层面,并且会带来标识“易损毁”和标识... 详细信息

数据标识是实现数据精准监管的前提条件,有效地保证了数据要素在跨域流转过程中的安全.当前已有针对单一数据的标识生成方法,但是随着数据规模的不断扩大,数据层面的数据标识无法直接应用到数据集层面,并且会带来标识“易损毁”和标识“难嵌入”的问题.为有效解决上述问题,通过沿用方滨兴院士提出的“护卫”模式中网络蜜点的设计理念,借助欺骗防御的思想提出数据跨域流转场景下基于数据集蜜点的抗损毁数据标识技术,设计并形成一套完整的数据集蜜点生成和嵌入方法.首先,针对数据跨域流转场景设计了数据集蜜点,并通过增强数据集蜜点的隐蔽性和增加数据集蜜点冗余的方式解决标识“易损毁”的问题.其次,通过保证数据集蜜点形态与真实数据密不可分,解决标识“难嵌入”的问题.最后,通过在图像和加密文本2个数据模态下进行实验,验证了数据集蜜点具备高抗损毁、高鲁棒和低性能开销的特性.

关键词：数据跨域流转数据标识数据集蜜点欺骗防御抗损毁嵌入

Adjoint based state estimation of compressible flow in porous media

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Petroleum 2021年第1期7卷 39-52页

作者： yanbin sun Zhibin Liu Yanjie Hu School of Science Southwest Petroleum UniversityChengdu610500China

In this paper,we study the state estimation of compressible single phase flow in compressible porous *** initial pressure distribution is estimated according to discrete adjoint approach based on the collected well pressure *** first-order Tykhonov regularization method is used to obtain reasonable *** analyzing the optimality condition of estimation problem,the discrete adjoint state equation and discrete adjoint gradient are derived based on the numerical scheme of the continuous equations.A quasi-Newton numerical optimization method related to adjoint gradient is proposed to solve the estimation *** estimation results with different regularization coefficients are compared and analyzed by numerical *** deviation between the estimated pressure obtained without regularization and the real pressure is *** result with smaller deviation and higher smoothness can be obtained through appropriate regularization *** the observation error is large,the observed values generated by the estimated pressure fit well with the real pressure.

关键词： Regularization Discrete adjoint approach State estimation Single phase compressible flow Porous media

Identifying Industrial Control Equipment Based on Rule Matching and Machine Learning

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 577-605页

作者： Yuhao Wang Yuying Li yanbin sun Yu Jiang Cyberspace Institute of Advanced Technology(CIAT) Guangzhou UniversityGuangzhou510006China

To identify industrial control equipment is often a key step in network mapping,categorizing network resources,and attack *** example,if vulnerable equipment or devices can be discovered in advance and the attack path canbe cut off,security threats canbe effectively avoided and the stable operationof the Internet canbe *** existing rule-matching method for equipment identification has limitations such as relying on experience and low *** paper proposes an industrial control device identification method based on PCA-Adaboost,which integrates rule matching and machine *** first build a rule base from network data collection and then use single andmulti-protocol rule-matchingmethods to identify the type of industrial control ***,we utilize PCA-Adaboost to identify unlabeled *** experimental results show that the recognition rate of this method is better than that of the traditional Nmap device recognitionmethod and the device recognition accuracy rate reaches 99%.The evaluation effect of the test data set is significantly enhanced.

关键词： Network mapping network resource industrial control equipment identification

Mesoproterozoic Continental Arc Type Granite in the Central Tianshan Mountains:Zircon SHRIMP U-Pb Dating and Geochemical Analyses

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 117-125页

作者： YANG Tiannan LI Jinyi sun Guihua WANG yanbin Institute of Geology Chinese Academy of Geological Sciences Beijing 100037

The Central Tianshan belt in northwestern China is a small Precambrian block located in the southern part of the Central Asia Orogenic Belt （CAOB）, which is considered as ＂the most voluminous block of young continental crust in the world＂ that comprises numerous small continental blocks separated by Paleozoic magmatic arcs. The Precambrian basement of the central Tianshan Mountains is composed of volcanic rocks and associated volcano-sedimentary rocks that were intruded by granitic plutons. Geochemical analyses demonstrate that the granitic plutons and volcanic rocks were generated in the Andean-type active continental arc environment like today＇s Chile, and the zircon U-Pb SHRIMP dating indicates that they were developed at about 956 Ma, possibly corresponding to the subduction of the inferred Mozambique Ocean under the Baltic-African super-continent.

关键词： Mesoproterozoic granite pluton magmatic arc Central Tianshan

Scalable Multi-Hash Name Lookup Method for Named Data Networking

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Journal of Harbin Institute of Technology(New Series) 2015年第6期22卷 62-68页

作者： Dongliang Xu Hongli Zhang yanbin sun Yufeng Liu School of Computer Science and Technology Harbin Institute of Technology School of Information Engineering Shandong University (Weihai) 90 Sub Unit 63851 Troopsthe Pelople's Liberation Army

A Scalable Multi-Hash( SMH) name lookup method is proposed,which is based on hierarchical name decomposition to aggregate names sharing common prefixes and multiple scalable hash tables to minimize collisions among prefixes. We take the component instead of the entire name as a key in the hash functions. The SMH method achieves lookup speeds of 21. 45 and 20. 87 Mbps on prefix table with 2 million and 3. 6 million names,respectively. The proposed method is the fastest of the four methods considered and requires 61.63 and 89.17 Mb of memory on the prefix tables with 2 million and 3. 6 million names,respectively. The required memory is slightly larger than the best method. The scalability of SMH outperforms that of the other two methods.

关键词： NDN name lookup scalable multi-hash longest prefix match

PLC Protection System Based on Verification Separation

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Computers, Materials & Continua 2022年第5期71卷 2401-2417页

作者： Xiaojun Pan Haiying Li Xiaoyi Li Li Xu yanbin sun Cyberspace Institute of Advanced Technology Guangzhou UniversityGuangzhou510000China School of Science and Engineering Laval UniversityQuebecG1V0A6Canada

Supervisory control and data acquisition systems(SCADAs)play an important role in supervising and controlling industrial production with the help of programmable logic controllers(PLCs)in industrial control systems(ICSs).A PLC receives the control information or program from a SCADA to control the production equipment and feeds the production data back to the *** a SCADA is controlled by an attacker,it may threaten the safety of industrial *** lack of security protection,such as identity authentication and encryption for industrial control protocols,increases the potential security *** this paper,we propose a PLC protection system combined with a monitor between a SCADA and a PLC and a physically separated monitoring *** using the PLC protection system,identity verification and command verification are separated,and both the identity of the operator and the corresponding commands are *** show that even if the SCADA is controlled by an attacker,our system could still protect the PLC in the field and record the identity of the key command operator,which facilitates the tracing and forensics of malicious activities.

关键词： ICS SCADA PLC security