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5G共建共享网络可视化安全态势感知研究

信息安全研究 2024年第3期10卷 277-283页

作者：吴夏宋仕斌姜山王毅邓力为中国电信股份有限公司四川分公司成都610015 四川公众项目咨询管理有限公司成都610058 四川大学锦江学院四川眉山620860

在5G共建共享网络中,海量安全日志和告警审计使得安全数据缺乏分析、安全事件处置效率低下.面对威胁感知能力缺失、安全管理困难等诸多痛点,提出了5G共建共享网络可视化安全态势感知模型和可视化解决方案.对空口、运维、系统、传输、配... 详细信息

在5G共建共享网络中,海量安全日志和告警审计使得安全数据缺乏分析、安全事件处置效率低下.面对威胁感知能力缺失、安全管理困难等诸多痛点,提出了5G共建共享网络可视化安全态势感知模型和可视化解决方案.对空口、运维、系统、传输、配置核查5大领域面临的攻击检测进行全面安全态势感知,进行了测试验证.对安全事件进行关联分析,识别跨域攻击链,发现攻击者核心意图,帮助客户实现主动、动态、可度量、可视化的5G共建共享网络安全、稳定运营及安全产业的快速发展.

关键词： 5G共建共享威胁分析安全态势感知取证溯源方案研究应用案例

Equation of state of CAS phase to pressure of the uppermost lower mantle at ambient temperature

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Science China Earth Sciences 2011年第9期54卷 1394-1399页

作者： LIU Xi HE Qiang deng liwei ZHAI ShuangMeng HU XiaoMin LI BaoSheng ZHANG LiFei CHEN ZhiQiang LIU Qiong Key Laboratory of Orogenic Belts and Crustal Evolution MOE School of Earth and Space Sciences Peking University Beijing 100871 China Geophysical Laboratory and Center for High-pressure Research Carnegie Institution of Washington 5251 Broad Branch Road NW Washington DC 20015-1305 USA Mineral Physics Institute State University of New York Stony Brook New York 11794 USA National Synchrotron Light Source Brookhaven National Laboratory Upton New York 11973 USA

The CAS phase is a major constituent phase for the continental crust and basaltic compositions at the P-T conditions of the Earth’s mantle, and potentially plays an important role in the geodynamic processes related to slab subduction. Its equation of state has been investigated here at ambient temperature up to about 25 GPa by using a diamond-anvil cell and synchrotron X ray radiation. Its P-V data, fitted to the third-order Birch-Murnaghan equation, yield an isothermal bulk modulus (KT) of 185 (9) GPa and first pressure derivative ( KT′ ) of 7.2 (12). If KT′ is fixed at 4, the derived KT is 212 (4) GPa. Additionally, the CAS phase is strongly elastically anisotropic, with its a-axis direction much less compressible than c-axis direction: KT-a:KT-c = 2.19.

关键词：状态方程环境温度压力导数中科院上地幔动力学过程 X射线辐射同步加速器

团体体育游戏对大班幼儿情绪调节能力影响的实验研究

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当代体育科技 2024年第9期14卷 140-145页

作者：王雨凡庄文婷邓力威聊城大学体育学院山东聊城252000

探究团体体育游戏对大班幼儿情绪调节能力的影响。采用实验法,将日照市高科蓝天幼儿园60名大班幼儿(两个自然班)划分为实验班和对照班,每班30人,实验班体育游戏课内容为团体体育游戏,对照班保持原有课程不变,实验时长6周,每周干预3次,每... 详细信息

探究团体体育游戏对大班幼儿情绪调节能力的影响。采用实验法,将日照市高科蓝天幼儿园60名大班幼儿(两个自然班)划分为实验班和对照班,每班30人,实验班体育游戏课内容为团体体育游戏,对照班保持原有课程不变,实验时长6周,每周干预3次,每次40 min。测试指标为修订版情绪调节核验表(ERC)。研究表明:团体体育游戏在本实验中能够改善大班幼儿情绪调节能力,实验组大班幼儿情绪调节维度得分提高,不稳定、消极维度得分降低。团体体育游戏可以作为大班幼儿改善情绪调节能力的有效干预措施。

关键词：情绪调节能力团体体育游戏大班幼儿实验研究

Fractional order nonsingular terminal sliding mode control for flexible spacecraft attitude tracking

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Instrumentation 2016年第1期3卷 21-29页

作者： GAO Junshan deng liwei SONG Shenmin School of Automation Harbin University of Science and Technology Center for Control Theory and Guidance Technology Harbin Institute of Technology

This paper investigates a fractional terminal sliding mode control for flexible spacecraft attitude tracking in the presence of inertia uncertainties and external disturbances. The controller is based on the fractional calculus and nonsingular terminal sliding mode control technique,and it guarantees the convergence of attitude tracking error in finite time rather than in the asymptotic sense. With respect to the controller,a fractional order sliding surface is given,the corresponding control scheme is proposed based on Lyapunov stability theory to guarantee the sliding condition,and the finite time stability of the whole close loop system is also proven. Finally,numerical simulations are presented to illustrate the performance of the proposed scheme.

关键词： flexible spacecraft attitude tracking fractional calculus sliding mode control finite time control

A Novel Unsupervised MRI Synthetic CT Image Generation Framework with Registration Network

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Computers, Materials & Continua 2023年第11期77卷 2271-2287页

作者： liwei deng Henan Sun Jing Wang Sijuan Huang Xin Yang Heilongjiang Provincial Key Laboratory of Complex Intelligent System and Integration School of AutomationHarbin University of Science and TechnologyHarbin150080China Institute for Brain Research and Rehabilitation South China Normal UniversityGuangzhou510631China Department of Radiation Oncology Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangzhou510060China

In recent years,radiotherapy based only on Magnetic Resonance(MR)images has become a hot spot for radiotherapy planning research in the current medical field.However,functional computed tomography(CT)is still needed for dose calculation in the clinic.Recent deep-learning approaches to synthesized CT images from MR images have raised much research interest,making radiotherapy based only on MR images possible.In this paper,we proposed a novel unsupervised image synthesis framework with registration networks.This paper aims to enforce the constraints between the reconstructed image and the input image by registering the reconstructed image with the input image and registering the cycle-consistent image with the input image.Furthermore,this paper added ConvNeXt blocks to the network and used large kernel convolutional layers to improve the network’s ability to extract features.This research used the collected head and neck data of 180 patients with nasopharyngeal carcinoma to experiment and evaluate the training model with four evaluation metrics.At the same time,this research made a quantitative comparison of several commonly used model frameworks.We evaluate the model performance in four evaluation metrics which achieve Mean Absolute Error(MAE),Root Mean Square Error(RMSE),Peak Signal-to-Noise Ratio(PSNR),and Structural Similarity(SSIM)are 18.55±1.44,86.91±4.31,33.45±0.74 and 0.960±0.005,respectively.Compared with other methods,MAE decreased by 2.17,RMSE decreased by 7.82,PSNR increased by 0.76,and SSIM increased by 0.011.The results show that the model proposed in this paper outperforms other methods in the quality of image synthesis.The work in this paper is of guiding significance to the study of MR-only radiotherapy planning.

关键词： MRI-CT image synthesis variational auto-encoder medical image translation MRI-only based radiotherapy

Meta-Learning Multi-Scale Radiology Medical Image Super-Resolution

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Computers, Materials & Continua 2023年第5期75卷 2671-2684页

作者： liwei deng Yuanzhi Zhang Xin Yang Sijuan Huang Jing Wang Heilongjiang Provincial Key Laboratory of Complex Intelligent System and Integration School of AutomationHarbin University of Science and TechnologyHarbin150080HeilongjiangChina Department of Radiation Oncology Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapyGuangzhou510060GuangdongChina Faculty of Rehabilitation Medicine Biofeedback LaboratoryGuangzhou Xinhua UniversityGuangzhou510520GuangdongChina

High-resolution medical images have important medical value,but are difficult to obtain directly.Limited by hardware equipment and patient’s physical condition,the resolution of directly acquired medical images is often not high.Therefore,many researchers have thought of using super-resolution algorithms for secondary processing to obtain high-resolution medical images.However,current super-resolution algorithms only work on a single scale,and multiple networks need to be trained when super-resolution images of different scales are needed.This definitely raises the cost of acquiring high-resolution medical images.Thus,we propose a multi-scale superresolution algorithm using meta-learning.The algorithm combines a metalearning approach with an enhanced depth of residual super-resolution network to design a meta-upscale module.The meta-upscale module utilizes the weight prediction property of meta-learning and is able to perform the super-resolution task of medical images at any scale.Meanwhile,we design a non-integer mapping relation for super-resolution,which allows the network to be trained under non-integer magnification requirements.Compared to the state-of-the-art single-image super-resolution algorithm on computed tomography images of the pelvic region.The meta-learning multiscale superresolution algorithm obtained a surpassing of about 2%at a smaller model volume.Testing on different parts proves the high generalizability of our algorithm.Multi-scale super-resolution algorithms using meta-learning can compensate for hardware device defects and reduce secondary harm to patients while obtaining high-resolution medical images.It can be of great use in imaging related fields.

关键词： Super resolution deep learning meta learning computed tomography

基于高阶扩维卡尔曼滤波器的SLAM算法研究

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广东石油化工学院学报 2024年第3期34卷 79-85页

作者：蔡彦斌刘继新邓立伟曹月吉林化工学院信息与控制工程学院吉林132022 广东石油化工学院自动化学院广东茂名525000

针对扩展卡尔曼滤波在解决强非线性系统问题时精度不高、在机器人进行同时定位与建图时误差大、抗干扰性弱、小车运动估计效果不理想等问题,提出了一种基于高阶扩维卡尔曼滤波器的小车运动估计方法。为了解决舍入误差,高阶扩维卡尔曼滤... 详细信息

针对扩展卡尔曼滤波在解决强非线性系统问题时精度不高、在机器人进行同时定位与建图时误差大、抗干扰性弱、小车运动估计效果不理想等问题,提出了一种基于高阶扩维卡尔曼滤波器的小车运动估计方法。为了解决舍入误差,高阶扩维卡尔曼滤波器算法引入隐变量,将小车运动模型进行伪线性化表示,在系统变量和隐变量之间建立线性关系,将系统状态模型转化为线性形式,再将观测模型进行等价改写。最终将小车运动模型改写为符合卡尔曼滤波的线性形式。仿真结果显示,基于高阶扩维卡尔曼滤波器的SLAM算法具有高性能和高精度等优点。

关键词： SLAM 特征估计卡尔曼滤波器

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Chaotic Synchronization Control based on Finite-time Sliding Model Controller

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NLR、ChE/ALB在COPD和COPD伴下呼吸道感染诊疗中的价值

第36届中国控制会议

作者： Gao Jun-shan Lan-lan Shi deng liwei Wu Bo Academy of Automation Harbin university of science and technology

ISBN: (纸本)9781538629185

For the problem of the synchronization between two chaotic systems with external disturbances and nonlinear input,based on the Lyapunov’s stability theory and combined the finite time principle with control technology existed,a sliding mode controller was designed by a new type of sliding surface and the corresponding control rule of sliding mode selectivity to achieve the synchronization control of two chaotic systems and make the system reach and maintain the balance state in a limited time.Finally,take Lorenz system and Liu system for example,some MATLAB simulation results verify the feasibility and effectiveness of the sliding mode controller design.

关键词： nonlinear control sliding mode controller finite-time control Lyapunov’s stability theory

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临床医学研究与实践 2024年第18期9卷 78-81页

作者：刘子晖邓力维郭攀朱虹宇四川大学华西医院营山医院医学检验科四川南充637700 四川大学华西医院营山医院呼吸与危重症科四川南充637700

目的分析中性粒细胞计数与淋巴细胞计数的比值(NLR)、胆碱酯酶/白蛋白(ChE/ALB)对慢性阻塞性肺病(COPD)和COPD伴下呼吸道感染的预测价值。方法选取2022年1月1日至9月30日于四川大学华西医院营山医院就诊的637例COPD患者和260名健康体检... 详细信息

目的分析中性粒细胞计数与淋巴细胞计数的比值(NLR)、胆碱酯酶/白蛋白(ChE/ALB)对慢性阻塞性肺病(COPD)和COPD伴下呼吸道感染的预测价值。方法选取2022年1月1日至9月30日于四川大学华西医院营山医院就诊的637例COPD患者和260名健康体检人群(对照组)作为研究对象,根据是否合并下呼吸道感染将患者分为COPD伴下呼吸道感染组(224例)和COPD不伴下呼吸道感染组(413例)。查询病案系统获取患者的一般资料,查询实验室信息系统获取案例的中性粒细胞计数、淋巴细胞计数、ChE和ALB水平的检测结果,计算NLR和ChE/ALB。采用受试者工作特征(ROC)曲线分析NLR和ChE/ALB在预测COPD或者预测COPD伴下呼吸道感染中的价值。结果COPD伴下呼吸道感染组的NLR显著大于COPD不伴下呼吸道感染组、对照组(P<0.05);COPD不伴下呼吸道感染组的NLR显著大于对照组(P<0.05)。COPD伴下呼吸道感染组的ChE/ALB小于COPD不伴下呼吸道感染组、对照组(P<0.05);COPD不伴下呼吸道感染组的ChE/ALB小于对照组(P<0.05)。NLR、ChE/ALB联合预测COPD伴下呼吸道感染的曲线下面积(AUC)约为0.929,联合预测COPD的AUC约为0.820,均高于NLR或ChE/ALB的单独预测(P<0.05)。结论NLR的升高和ChE/ALB降低与COPD、COPD伴下呼吸道感染具有一定的相关性,可以作为预测指标,两者联合使用其诊断效能更高。

关键词：中性粒细计数与淋巴细胞计数的比值胆碱酯酶白蛋白慢性阻塞性肺病下呼吸道感染